US20220374674A1 - Rfid straps with a top and bottom conductor - Google Patents
Rfid straps with a top and bottom conductor Download PDFInfo
- Publication number
- US20220374674A1 US20220374674A1 US17/661,199 US202217661199A US2022374674A1 US 20220374674 A1 US20220374674 A1 US 20220374674A1 US 202217661199 A US202217661199 A US 202217661199A US 2022374674 A1 US2022374674 A1 US 2022374674A1
- Authority
- US
- United States
- Prior art keywords
- conductor
- strap
- rfid
- antenna
- coupled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0716—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0716—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
- G06K19/0717—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor the sensor being capable of sensing environmental conditions such as temperature history or pressure
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
- G06K19/0724—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
- G06K19/07756—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna the connection being non-galvanic, e.g. capacitive
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
- G06K19/07767—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07794—Antenna details the record carrier comprising a booster or auxiliary antenna in addition to the antenna connected directly to the integrated circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/06—Details
- H01Q9/065—Microstrip dipole antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
- H01Q9/265—Open ring dipoles; Circular dipoles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Definitions
- the present invention relates generally to a method of incorporating a second conductor into a radio-frequency identification (“RFID”) strap device, and the resulting device.
- RFID radio-frequency identification
- the method and resulting device allows for the coupling between the second conductor and the strap conductor which adds functionality to the RFID strap device.
- the present method is especially suitable for RFID strap devices. Accordingly, the present specification makes specific reference thereto. However, it is to be appreciated that aspects of the present inventive method are also equally amenable to other like applications and devices.
- Radio-frequency identification uses magnetic, electric, or electromagnetic fields transmitted by a reader system to identify itself and, in some cases, provide additionally stored data.
- RFID tags typically include a semiconductor device commonly called the “chip” on which are formed a memory and operating circuitry. The RFID chip is connected to an antenna, either directly or with an RFID strap device, as is known in the art.
- RFID tags act as transponders, providing information stored in the chip memory in response to a radio frequency (“RF”) interrogation signal received from a reader, also referred to as an interrogator.
- RF radio frequency
- the device has a power source such as a battery.
- passive RFID devices the energy of the interrogation signal also provides the necessary energy to operate the RFID device.
- passive RFID devices may have a shorter read range compared to active RFID devices, they are much less expensive and do not have a limited life time (e.g., due to limits on battery life) as with active RFID devices.
- RFID tags may be incorporated into and/or attached to articles that one desires to be tracked.
- the tag may be attached to the outside of an article with adhesive, tape, or other means known in the art and, in other cases, the tag may be inserted within the article, such as being included in the packaging, located within the container of the article, or sewn into a garment.
- the RFID tags may be manufactured with a unique identification number, which in one embodiment is a simple serial number of several bytes with a check digit attached. This identification number is often incorporated into the tag during manufacture. The user in most cases cannot alter this serial/identification number and manufacturers guarantee that each serial number is used only once.
- Such read-only RFID tags typically are permanently attached to an article to be tracked and, once attached, the serial number of the tag is associated with its host article in a computer data base.
- the present invention discloses a method of incorporating at least one additional conductor in addition to the conductor already within the RFID strap device, into a RFID strap device, and the strap conductor and the at least one additional conductor are coupled together to add functionality.
- the functionality can include the at least one additional conductor acting as a secondary antenna operating at a different frequency to the first antenna driven by the strap conductor, the second conductor providing sensing capability to the device, the second conductor driving an emissive device, or the second conductor interfacing to one or more semiconductor devices mounted onto the second conductor.
- the subject matter disclosed and claimed herein in one aspect thereof, comprises a method of incorporating a second conductor into an RFID strap device and the resulting device.
- the RFID strap device comprises a top (or second) conductor coupled to a strap (or first) conductor via a separating dielectric.
- the RFID strap device is also coupled to a separate antenna on a base substrate.
- the antenna can be made of any suitable material known in the art, such as aluminum foil, and the base substrate is typically comprised of paper. Alternate materials may be used for the base substrate, however, as will be appreciated by a person of ordinary skill in the art.
- a second antenna formed on the top conductor operates at a higher frequency compared to a first antenna which is coupled to the strap conductor.
- the top conductor is also coupled to the RFID strap device; thus the RFID strap device can communicate at a second (or higher) frequency or harvest energy to increase the performance, such as the read range, of the RFID chip at a first frequency.
- the top conductor is employed as an emissive device, for example driving an LED (light emitting diode), etc.
- the top conductor is coupled to the RFID strap device via a pair of strap pads or other suitable component, which allows the RFID strap device to drive the LED as well.
- the top conductor is connected to a semiconductor device. Then, the coupling of the top conductor to the RFID strap device via the pair of strap pads or other suitable component provides such beneficial effects as communication of data, power, or clock frequencies, etc.
- the semiconductor device can act as a Bluetooth beacon, where the 2.45 GHz transmission uses the top conductor as an antenna, and the power or data received by the RFID strap device via the first antenna will control and/or power the beacon.
- a radio-frequency identification (RFID) tag comprises an RFID strap device, which comprises a first strap conductor comprising a pair of strap pads and an RFID chip, a second conductor, a dielectric positioned between the first strap conductor and the second conductor, and an antenna coupled to the RFID strap device.
- RFID radio-frequency identification
- the antenna of the RFID tag is located on a base substrate. In some embodiments, the antenna operates at a first frequency. In further embodiments, the second conductor functions as a second antenna, which in some embodiments operates at a frequency that differs from the first frequency of the antenna. In some embodiments, the second conductor is coupled to the first strap conductor via capacitance through the dielectric. In other embodiments, the second conductor is coupled to the first strap conductor via direct ohmic connection means, which in some embodiments include mechanical crimping, electrochemical processes, or one or more holes filled with conductive ink.
- a radio-frequency identification (RFID) strap device is coupled to a first antenna and comprises a first strap conductor comprised of a pair of strap pads connected to an RFID chip, a second conductor comprised of a second antenna, and a dielectric positioned between the first strap conductor and the second conductor, wherein the second antenna is configured to operate at a frequency different than the first antenna.
- RFID radio-frequency identification
- the second antenna of the RFID strap device is coupled to the RFID chip, and in some embodiments the second antenna increases impedance match between the RFID chip and the first antenna.
- the second conductor is coupled to a sensing device, in other embodiments the second conductor is coupled to an emissive device, and in other embodiments still the second conductor is coupled to a semiconductor device.
- the second conductor is printed with conductive ink.
- the present disclosure also contemplates a method of incorporating a second conductor into a radio-frequency identification (RFID) strap device comprising the steps of providing a first strap conductor comprised of a pair of strap pads, connecting an RFID chip to said pair of strap pads, positioning a dielectric between the first strap conductor and the second conductor, and coupling the RFID strap device to an antenna.
- RFID radio-frequency identification
- the method further comprises forming a second antenna on the second conductor. In some embodiments, the method further comprises operating the second antenna at a frequency different than the antenna. In some embodiments, the method further comprises coupling the second conductor to a sensing device, while in other embodiments, the method comprises coupling the second conductor to an emissive device.
- FIG. 1A illustrates a side perspective view of a RFID strap device with an additional conductor in accordance with the disclosed architecture
- FIG. 1B illustrates a top perspective view of the RFID strap device with an additional conductor in accordance with the disclosed architecture
- FIG. 2 illustrates a side perspective view of a RFID tag incorporating one embodiment of the RFID strap device of the present disclosure with an antenna and base layer coupled thereto in accordance with the disclosed architecture;
- FIG. 3 illustrates a side perspective view of the RFID strap device with a second antenna formed on the top conductor in accordance with the disclosed architecture
- FIG. 4A illustrates a side perspective view of the RFID strap device wherein the top conductor is coupled to the bottom conductor via capacitance in accordance with the disclosed architecture
- FIG. 4B illustrates a side perspective view of the RFID strap device wherein the top conductor is coupled to the bottom conductor via a crimp or ohmic contact in accordance with the disclosed architecture
- FIG. 5A illustrates a top perspective view of the RFID strap device wherein the top conductor acts as a second antenna in accordance with the disclosed architecture
- FIG. 5B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 6A illustrates a top perspective view of the RFID strap device with a coil type antenna on the top conductor in accordance with the disclosed architecture
- FIG. 6B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 7A illustrates a top perspective view of the RFID strap device wherein the top conductor is a dual function conductor which acts as a second antenna in the RFID strap device in accordance with the disclosed architecture;
- FIG. 7B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 8A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises an interdigital sensing structure for sensing the presence of liquids or dielectrics in accordance with the disclosed architecture;
- FIG. 8B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 9A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises an emissive device in accordance with the disclosed architecture
- FIG. 9B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 10A illustrates a top perspective view of the RFID strap device wherein the top conductor functions as an antenna, a sensor interface, or an emissive device connection in accordance with the disclosed architecture;
- FIG. 10B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to a multi-port strap and RFID chip in accordance with the disclosed architecture
- FIG. 11A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises a semiconductor device in accordance with the disclosed architecture
- FIG. 11B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 12A illustrates a top perspective view of the RFID strap device wherein the top conductor is an un-patterned strap conductor in accordance with the disclosed architecture
- FIG. 12B illustrates a top perspective view of the RFID strap device wherein the top conductor is modified by a laser before or after attachment of the RFID strap and antenna in accordance with the disclosed architecture
- FIG. 12C illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture
- FIG. 13A illustrates a top perspective view of the RFID strap device wherein the top conductor is a printed conductor area on the top surface of the RFID strap in accordance with the disclosed architecture
- FIG. 13B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture.
- a method of incorporating a second conductor into a RFID strap device wherein the strap conductor and the second conductor are coupled together to add functionality, is provided.
- the functionality added can be a secondary antenna operating at a different frequency to the first antenna that is driven by the strap pads, a sensing capability, a drive to an emissive device such as an LED, or an interface to one or more semiconductor devices mounted onto the second conductor.
- FIGS. 1A-B and 2 illustrate an RFID strap device 100 that incorporates a second conductor 102 .
- the RFID strap device 100 comprises a first (or strap) conductor 104 and a second (or top) conductor 102 with a dielectric 108 positioned between the first conductor 104 and the second conductor 102 .
- the first conductor 104 and the second conductor 102 can be any suitable conductors that are known in the art, for example an aluminum foil, a copper foil, or a printed conductive ink.
- first conductor 104 and the second conductor 102 can be any suitable size, shape, and configuration as is known in the art without affecting the overall concept of the invention.
- the first conductor 104 may consist of a series of pads connected to the RFID chip, the shape of the pads being designed so that they can be coupled to an antenna by methods such as capacitance through a thin dielectric adhesive or by the use of a conductive adhesive and hence connect the RFID chip to the antenna.
- Suitable shapes depend on the number of pads and the nature of the antenna used. For instance, one suitable shape when two pads are utilized is a bow tie, which has two largely rectangular sections which are large enough to couple to an antenna capacitively or by other means of coupling.
- the bow tie shape also consists of tapered sections down towards the chip connections making it easier to attach a chip precisely to the pads.
- first conductor 104 and the second conductor 102 as shown in the figures are for illustrative purposes only and that many other shapes and sizes of the first conductor 104 and the second conductor 102 are well within the scope of the present disclosure.
- dimensions of the first conductor 104 and the second conductor 102 i.e., length, width, and height
- the first conductor 104 and second conductor 102 may be any shape or size that ensures optimal performance during use.
- the chip 112 may comprise a pair of conductive pads 110 .
- the present invention also contemplates that the chip 112 may also use conductive bumps (not illustrated).
- the present invention is not limited to the utilization of conductive pads 110 and/or bumps in order to facilitate attachment of the chip 112 to the antenna 214 .
- the RFID chip 112 is coupled to, or in communication with, a separate antenna 214 (shown in FIG. 2 ) on a base substrate 216 (shown in FIG. 2 ) to form RFID tag 200 .
- the antenna 214 can be made of any suitable material as is known in the art, such as aluminum foil.
- the antenna 214 may be any type of antenna known in the art such as a dipole, sloop, etc.
- the base substrate 216 is typically comprised of a paper, including a recycled paper, but any other suitable material, such as plastic, including a recycled plastic, may also be used without affecting the overall scope of the invention.
- an RFID strap device 300 comprises a top conductor 302 which may function as an antenna (the second antenna) and which is coupled to, or in communication with, a strap conductor 304 via a separating dielectric 306 .
- the top conductor 302 may provide a path for frequencies that are different from a wanted operational frequency of the device.
- the top conductor 302 may provide a path for frequencies of signals at 2.45 GHz, when the wanted operational frequency of the strap conductor 302 coupled to the antenna (not illustrated) is in the UHF band (e.g., generally 860 MHz-960 MHz, or, more particularly, 902 MHz-928 MHz in certain countries including the United States, China, and Japan, or alternatively, 865 MHz-868 MHz in certain other countries including the European Union, United Kingdom, and Russia) which prevents the interference from systems such as WiFi and Bluetooth, and, in the event of a strong signal, preventing damage to the RFID chip or creating a voltage high enough to cause a destructive arc.
- the UHF band e.g., generally 860 MHz-960 MHz, or, more particularly, 902 MHz-928 MHz in certain countries including the United States, China, and Japan, or alternatively, 865 MHz-868 MHz in certain other countries including the European Union, United Kingdom, and Russia
- the top conductor 302 may also perform other functions, such as acting as an inductor across the RFID strap pads and hence the RFID chip 312 , in order to assist with matching between the chip 312 and the antenna (not illustrated), or a filter (i.e., a band pass and/or band stop), using a configuration of inductance and capacitance or a transmission line resonator such as twin line, specifically designed to enhance or suppress a range or frequencies. For example, passing 902 MHz to 928 MHz and suppressing adjacent signals, and in another example a GSM Base To Mobile transmission at 935 MHz to 960 MHz.
- the top conductor 302 may also support another device to enhance the filtering function, such as a Surface Acoustic Wave device, dielectric resonator, magnetic material with a frequency dependent adsorption of RF energy, dielectric materials with a frequency dependent adsorption, resistive materials designed to adsorb energy over a large frequency range, and transmission line elements such as microstrip, stripline or coplanar waveguide.
- a Surface Acoustic Wave device dielectric resonator
- magnetic material with a frequency dependent adsorption of RF energy dielectric materials with a frequency dependent adsorption
- resistive materials designed to adsorb energy over a large frequency range and transmission line elements such as microstrip, stripline or coplanar waveguide.
- the thickness of the conductor may be chosen such that its conductivity varies with frequency.
- a conductor of 2.7 ⁇ m thickness has one skin depth at 915 MHz, and hence its RF resistance is close to its DC resistance; however, at 13.56 MHz, where the skin depth is 22 ⁇ m, the RF resistance is much higher than the DC resistance, so energy at 13.56 MHz passing through the 2.7 ⁇ m thick top conductor would be relatively adsorbed.
- top conductor 302 An additional use of the top conductor 302 is to make its electrical properties a function of a sensed property. For example, the presence of a liquid across a gap, where the changed properties of the top conductor 302 couple to the strap and antenna conductor as previously described, alters a parameter of the RFID tag, such as its sensitivity at a given frequency, in response to the sensed property.
- the separating dielectric 306 may be a plastic, such as PET, a paper, or a material with a relatively higher dielectric constant, for example in the range of 3 F/m to 10 F/m, such as a plastic incorporating a ceramic filler such as titanium dioxide, or any other suitable material as is known in the art.
- the strap conductor 304 may also operate as an antenna (the first antenna). Specifically, the first antenna may be coupled to, or in communication with, a pair of pads 310 and an RFID chip 312 Thus, both top conductor 302 and strap conductor 304 act as antennas to add functionality to the RFID strap device 300 .
- FIG. 4A illustrates an RFID strap device 400 comprised of a top conductor 402 that is coupled to a bottom conductor 404 via capacitance through a dielectric 406 .
- FIG. 4B discloses an RFID strap device 408 comprised of a top conductor 410 coupled to a bottom conductor 412 using direct ohmic connection means 414 .
- the direct ohmic connection means 414 can be any other suitable means known in the art for forming a direct ohmic connection, including mechanical crimping, electrochemical processes, one or more holes filled with a conductive ink.
- RFID strap device 500 comprises a top conductor 502 which has a second antenna 504 formed thereon or attached thereto.
- the second antenna 504 may operate at a higher frequency than a first antenna coupled to the strap conductor 506 .
- the first antenna may operate in the range of 902-928 MHz and the second antenna 504 may operate in the range of 2400 MHz-2500 MHz.
- the second antenna 504 may operate at a lower frequency than a first antenna coupled to the strap 506 .
- the first antenna may operate in the range of 902-928 MHz and the second antenna 504 may operate at a frequency of, or adjacent to, 13.56 MHz.
- This second antenna 504 is also coupled to the RFID chip 508 and a pair of strap pads 510 .
- This coupling can allow the RFID strap device 500 to communicate at a second (or higher) frequency than the first antenna and/or harvest energy to increase the performance of the RFID chip 508 at the frequency of the first antenna.
- the RFID strap device 600 can comprise a top conductor 602 that has a second antenna 604 formed thereon, or attached thereto.
- the second antenna 604 can be a coil type antenna or any other suitable antenna as is known in the art.
- the second antenna 604 operates at a lower frequency than the first antenna (not illustrated) coupled to the strap conductor 606 .
- This first antenna is coupled to the pair of strap pads 608 and RFID chip 610 . As in FIG. 5 , this coupling can allow operation of the RFID chip 610 at both frequencies (generated from the first antenna and second antenna 604 ) and also allows power to be harvested at the second frequency associated with the second antenna 604 on the top conductor 602 .
- the RFID strap device 700 comprises a dual function top conductor (or second conductor) 702 that operates as a second antenna 704 .
- the top conductor 702 /second antenna 704 has a dual function in that it operates at a different frequency than the first antenna (not illustrated), which is coupled to the pair of strap pads 708 and RFID chip 710 , and also acts to improve the impedance match between the RFID chip 710 and the first antenna/strap conductor 706 .
- the RFID strap device 800 comprises a top conductor 802 coupled to a sensing device 804 .
- This coupling forms an interdigital sensing structure to sense, for instance, but not limited to, the presence of liquids, dielectrics, or any sort of chemical.
- the coupling between the sensing device 804 and the strap conductor 806 via the pair of strap pads 808 and the RFID chip 810 can alter the characteristics of the RFID strap device 800 function. For example, it may reduce the sensitivity, change the operating frequency, or change a digital bit in the RFID strap device 800 communication.
- RFID strap device 900 comprises a top conductor 902 which acts as part of an emissive device 904 and is coupled to the RFID strap device 900 .
- the emissive device 904 is coupled to the strap conductor 906 via the pair of strap pads 908 and RFID chip 910 .
- the emissive device 904 can then act to drive an LED, or other suitable structure as is known in the art.
- FIGS. 10A-B discloses a multi-port RFID strap device 1000 which comprises a top conductor 1002 functioning as a second antenna 1004 .
- the top conductor 1002 is coupled to, or in communication with, one or more strap pads 1008 of a multi-port strap and RFID chip 1010 on the strap conductor 1006 of the multi-port RFID strap device 1000 .
- the top conductor 1002 can then function as an antenna, a sensor interface, an emissive device connection, or other suitable device.
- the top conductor 1002 functions as the second antenna 1004 , it can operate at a second frequency different from the strap conductor 1006 /first antenna, so that the energy from the second antenna 1004 is coupled to an alternative strap pad 1008 on the multi-port RFID strap device 1000 .
- the RFID strap device 1100 comprises a top conductor 1102 which is connected to a semiconductor device 1104 and then coupled to a strap conductor 1106 .
- the semiconductor device 1104 is coupled to the strap conductor 1106 via a pair of strap pads 1108 and RFID chip 1110 .
- the coupling to the RFID strap device 1100 via the pair of strap pads 1108 may provide such things as communication of data, power, clock frequencies, etc.
- the semiconductor device 1104 may act as a Bluetooth beacon, where the 2.45 GHz transmission uses the top conductor 1102 as an antenna, and power or data received by the RFID strap device 1100 via the antenna will control and/or power the beacon.
- the top conductor 1102 may incorporate energy storage elements such as a battery or super-capacitor to power the RFID strap device 1100 or store energy to operate a sensor or other element.
- FIGS. 12A-C illustrate another embodiment wherein the RFID strap device 1200 comprises a top conductor 1202 which is initially either un-patterned or only partially patterned.
- This top conductor 1202 can then be changed by any suitable method known to those of ordinary skill in the art to remove material, such as, but not limited to, using a laser beam to ablate away portions of the conductor 1202 .
- mechanical means known to those of ordinary skill in the art can be used to ablate away portions of the conductor 1202 .
- the cutting can produce structures 1204 as previously described, such as a secondary antenna or sensor interface area; however, as the strap conductor 1206 may be attached (coupled) to the antenna via the pair of strap pads 1208 and RFID chip 1210 , the cutting may be in response to a measurable parameter, such as peak operating frequency, allowing adjustment of the frequency, either to deal with manufacturing tolerances or adjust the operating frequency of the RFID strap device 1200 .
- a measurable parameter such as peak operating frequency
- FIGS. 13A-B illustrate another embodiment wherein the RFID strap device 1300 comprises a top conductor 1302 which comprises a printed conductor area 1304 which is printed with conductive ink.
- the conductive ink contains silver, copper or graphene. Any other suitable conductive ink known to those of ordinary skill in the art may be used without departing from the scope of the present disclosure.
- the printed conductor area 1304 and top conductor 1302 are coupled to the strap conductor 1306 .
- the printed conductor area 1304 is coupled to the strap conductor 1306 via the pair of strap pads 1308 and RFID chip 1310 .
- the printed conductor area 1304 may be applied to the RFID strap device 1300 prior to attachment of the strap or post-attachment using any suitable means, such as inkjet, screen printing, flexographic printing or gravure printing.
- the printed conductor area 1304 can be used in any of the ways previously described above, for example, as a secondary antenna or sensor interface area.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
Abstract
A method of incorporating a second conductor into a RFID strap device and the resulting device in multiple embodiments is disclosed. The second conductor adds functionality via coupling between the strap conductor and the second conductor. The functionality added can be a secondary antenna operating at a different frequency than the first antenna that is driven by the strap pads, a sensing capability, a drive for an emissive device such as an LED, or an interface to one or more semiconductor devices mounted onto the second conductor.
Description
- The present application is a continuation of U.S. patent application Ser. No. 16/389,284 filed Apr. 19, 2019, which claims priority to and the benefit of U.S. Provisional Application No. 62/660,510 filed Apr. 20, 2018, each of which is incorporated herein by reference in its entirety.
- The present invention relates generally to a method of incorporating a second conductor into a radio-frequency identification (“RFID”) strap device, and the resulting device. Specifically, the method and resulting device allows for the coupling between the second conductor and the strap conductor which adds functionality to the RFID strap device. The present method is especially suitable for RFID strap devices. Accordingly, the present specification makes specific reference thereto. However, it is to be appreciated that aspects of the present inventive method are also equally amenable to other like applications and devices.
- Radio-frequency identification uses magnetic, electric, or electromagnetic fields transmitted by a reader system to identify itself and, in some cases, provide additionally stored data. RFID tags typically include a semiconductor device commonly called the “chip” on which are formed a memory and operating circuitry. The RFID chip is connected to an antenna, either directly or with an RFID strap device, as is known in the art. Typically, RFID tags act as transponders, providing information stored in the chip memory in response to a radio frequency (“RF”) interrogation signal received from a reader, also referred to as an interrogator. In the case of active RFID devices, the device has a power source such as a battery. With passive RFID devices, on the other hand, the energy of the interrogation signal also provides the necessary energy to operate the RFID device. Thus, although passive RFID devices may have a shorter read range compared to active RFID devices, they are much less expensive and do not have a limited life time (e.g., due to limits on battery life) as with active RFID devices.
- RFID tags may be incorporated into and/or attached to articles that one desires to be tracked. In some cases, the tag may be attached to the outside of an article with adhesive, tape, or other means known in the art and, in other cases, the tag may be inserted within the article, such as being included in the packaging, located within the container of the article, or sewn into a garment. The RFID tags may be manufactured with a unique identification number, which in one embodiment is a simple serial number of several bytes with a check digit attached. This identification number is often incorporated into the tag during manufacture. The user in most cases cannot alter this serial/identification number and manufacturers guarantee that each serial number is used only once. Such read-only RFID tags typically are permanently attached to an article to be tracked and, once attached, the serial number of the tag is associated with its host article in a computer data base.
- The present invention discloses a method of incorporating at least one additional conductor in addition to the conductor already within the RFID strap device, into a RFID strap device, and the strap conductor and the at least one additional conductor are coupled together to add functionality. In one embodiment, the functionality can include the at least one additional conductor acting as a secondary antenna operating at a different frequency to the first antenna driven by the strap conductor, the second conductor providing sensing capability to the device, the second conductor driving an emissive device, or the second conductor interfacing to one or more semiconductor devices mounted onto the second conductor.
- The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed innovation. This summary is not an extensive overview, and it is not intended to identify key/critical elements or to delineate the scope thereof. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
- The subject matter disclosed and claimed herein, in one aspect thereof, comprises a method of incorporating a second conductor into an RFID strap device and the resulting device. The RFID strap device comprises a top (or second) conductor coupled to a strap (or first) conductor via a separating dielectric. The RFID strap device is also coupled to a separate antenna on a base substrate. The antenna can be made of any suitable material known in the art, such as aluminum foil, and the base substrate is typically comprised of paper. Alternate materials may be used for the base substrate, however, as will be appreciated by a person of ordinary skill in the art.
- In a preferred embodiment, a second antenna formed on the top conductor operates at a higher frequency compared to a first antenna which is coupled to the strap conductor. The top conductor is also coupled to the RFID strap device; thus the RFID strap device can communicate at a second (or higher) frequency or harvest energy to increase the performance, such as the read range, of the RFID chip at a first frequency.
- Additionally, in another embodiment, the top conductor is employed as an emissive device, for example driving an LED (light emitting diode), etc. The top conductor is coupled to the RFID strap device via a pair of strap pads or other suitable component, which allows the RFID strap device to drive the LED as well.
- In another embodiment, the top conductor is connected to a semiconductor device. Then, the coupling of the top conductor to the RFID strap device via the pair of strap pads or other suitable component provides such beneficial effects as communication of data, power, or clock frequencies, etc. For example, the semiconductor device can act as a Bluetooth beacon, where the 2.45 GHz transmission uses the top conductor as an antenna, and the power or data received by the RFID strap device via the first antenna will control and/or power the beacon.
- According to some embodiments of the present disclosure, a radio-frequency identification (RFID) tag comprises an RFID strap device, which comprises a first strap conductor comprising a pair of strap pads and an RFID chip, a second conductor, a dielectric positioned between the first strap conductor and the second conductor, and an antenna coupled to the RFID strap device.
- In some embodiments, the antenna of the RFID tag is located on a base substrate. In some embodiments, the antenna operates at a first frequency. In further embodiments, the second conductor functions as a second antenna, which in some embodiments operates at a frequency that differs from the first frequency of the antenna. In some embodiments, the second conductor is coupled to the first strap conductor via capacitance through the dielectric. In other embodiments, the second conductor is coupled to the first strap conductor via direct ohmic connection means, which in some embodiments include mechanical crimping, electrochemical processes, or one or more holes filled with conductive ink.
- According to other embodiments of the present disclosure, a radio-frequency identification (RFID) strap device is coupled to a first antenna and comprises a first strap conductor comprised of a pair of strap pads connected to an RFID chip, a second conductor comprised of a second antenna, and a dielectric positioned between the first strap conductor and the second conductor, wherein the second antenna is configured to operate at a frequency different than the first antenna.
- In some embodiments, the second antenna of the RFID strap device is coupled to the RFID chip, and in some embodiments the second antenna increases impedance match between the RFID chip and the first antenna. In some embodiments, the second conductor is coupled to a sensing device, in other embodiments the second conductor is coupled to an emissive device, and in other embodiments still the second conductor is coupled to a semiconductor device. In some embodiments, the second conductor is printed with conductive ink.
- The present disclosure also contemplates a method of incorporating a second conductor into a radio-frequency identification (RFID) strap device comprising the steps of providing a first strap conductor comprised of a pair of strap pads, connecting an RFID chip to said pair of strap pads, positioning a dielectric between the first strap conductor and the second conductor, and coupling the RFID strap device to an antenna.
- In some embodiments, the method further comprises forming a second antenna on the second conductor. In some embodiments, the method further comprises operating the second antenna at a frequency different than the antenna. In some embodiments, the method further comprises coupling the second conductor to a sensing device, while in other embodiments, the method comprises coupling the second conductor to an emissive device.
- To the accomplishment of the foregoing and related ends, certain illustrative aspects of the disclosed innovation are described herein in connection with the following description and the annexed drawings. These aspects are indicative, however, of but a few of the various ways in which the principles disclosed herein can be employed and is intended to include all such aspects and their equivalents. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the accompanying drawings, in which:
-
FIG. 1A illustrates a side perspective view of a RFID strap device with an additional conductor in accordance with the disclosed architecture; -
FIG. 1B illustrates a top perspective view of the RFID strap device with an additional conductor in accordance with the disclosed architecture; -
FIG. 2 illustrates a side perspective view of a RFID tag incorporating one embodiment of the RFID strap device of the present disclosure with an antenna and base layer coupled thereto in accordance with the disclosed architecture; -
FIG. 3 illustrates a side perspective view of the RFID strap device with a second antenna formed on the top conductor in accordance with the disclosed architecture; -
FIG. 4A illustrates a side perspective view of the RFID strap device wherein the top conductor is coupled to the bottom conductor via capacitance in accordance with the disclosed architecture; -
FIG. 4B illustrates a side perspective view of the RFID strap device wherein the top conductor is coupled to the bottom conductor via a crimp or ohmic contact in accordance with the disclosed architecture; -
FIG. 5A illustrates a top perspective view of the RFID strap device wherein the top conductor acts as a second antenna in accordance with the disclosed architecture; -
FIG. 5B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 6A illustrates a top perspective view of the RFID strap device with a coil type antenna on the top conductor in accordance with the disclosed architecture; -
FIG. 6B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 7A illustrates a top perspective view of the RFID strap device wherein the top conductor is a dual function conductor which acts as a second antenna in the RFID strap device in accordance with the disclosed architecture; -
FIG. 7B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 8A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises an interdigital sensing structure for sensing the presence of liquids or dielectrics in accordance with the disclosed architecture; -
FIG. 8B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 9A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises an emissive device in accordance with the disclosed architecture; -
FIG. 9B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 10A illustrates a top perspective view of the RFID strap device wherein the top conductor functions as an antenna, a sensor interface, or an emissive device connection in accordance with the disclosed architecture; -
FIG. 10B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to a multi-port strap and RFID chip in accordance with the disclosed architecture; -
FIG. 11A illustrates a top perspective view of the RFID strap device wherein the top conductor comprises a semiconductor device in accordance with the disclosed architecture; -
FIG. 11B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 12A illustrates a top perspective view of the RFID strap device wherein the top conductor is an un-patterned strap conductor in accordance with the disclosed architecture; -
FIG. 12B illustrates a top perspective view of the RFID strap device wherein the top conductor is modified by a laser before or after attachment of the RFID strap and antenna in accordance with the disclosed architecture; -
FIG. 12C illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture; -
FIG. 13A illustrates a top perspective view of the RFID strap device wherein the top conductor is a printed conductor area on the top surface of the RFID strap in accordance with the disclosed architecture; and -
FIG. 13B illustrates a bottom perspective view of the RFID strap device wherein the bottom conductor is coupled to the strap and RFID chip in accordance with the disclosed architecture. - The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate a description thereof.
- According to the present disclosure, a method of incorporating a second conductor into a RFID strap device, wherein the strap conductor and the second conductor are coupled together to add functionality, is provided. The functionality added can be a secondary antenna operating at a different frequency to the first antenna that is driven by the strap pads, a sensing capability, a drive to an emissive device such as an LED, or an interface to one or more semiconductor devices mounted onto the second conductor.
- Referring initially to the drawings,
FIGS. 1A-B and 2 illustrate anRFID strap device 100 that incorporates asecond conductor 102. Specifically, theRFID strap device 100 comprises a first (or strap)conductor 104 and a second (or top)conductor 102 with a dielectric 108 positioned between thefirst conductor 104 and thesecond conductor 102. Thefirst conductor 104 and thesecond conductor 102 can be any suitable conductors that are known in the art, for example an aluminum foil, a copper foil, or a printed conductive ink. - Further, the
first conductor 104 and thesecond conductor 102 can be any suitable size, shape, and configuration as is known in the art without affecting the overall concept of the invention. For instance, in one embodiment thefirst conductor 104 may consist of a series of pads connected to the RFID chip, the shape of the pads being designed so that they can be coupled to an antenna by methods such as capacitance through a thin dielectric adhesive or by the use of a conductive adhesive and hence connect the RFID chip to the antenna. Suitable shapes depend on the number of pads and the nature of the antenna used. For instance, one suitable shape when two pads are utilized is a bow tie, which has two largely rectangular sections which are large enough to couple to an antenna capacitively or by other means of coupling. Furthermore, the bow tie shape also consists of tapered sections down towards the chip connections making it easier to attach a chip precisely to the pads. One of ordinary skill in the art will appreciate that the shape and size of thefirst conductor 104 and thesecond conductor 102 as shown in the figures are for illustrative purposes only and that many other shapes and sizes of thefirst conductor 104 and thesecond conductor 102 are well within the scope of the present disclosure. Although dimensions of thefirst conductor 104 and the second conductor 102 (i.e., length, width, and height) are important design parameters for good performance, thefirst conductor 104 andsecond conductor 102 may be any shape or size that ensures optimal performance during use. - Further, the
chip 112, in one embodiment, may comprise a pair ofconductive pads 110. The present invention also contemplates that thechip 112 may also use conductive bumps (not illustrated). However, the present invention is not limited to the utilization ofconductive pads 110 and/or bumps in order to facilitate attachment of thechip 112 to theantenna 214. TheRFID chip 112 is coupled to, or in communication with, a separate antenna 214 (shown inFIG. 2 ) on a base substrate 216 (shown inFIG. 2 ) to formRFID tag 200. Theantenna 214 can be made of any suitable material as is known in the art, such as aluminum foil. Theantenna 214 may be any type of antenna known in the art such as a dipole, sloop, etc. Thebase substrate 216 is typically comprised of a paper, including a recycled paper, but any other suitable material, such as plastic, including a recycled plastic, may also be used without affecting the overall scope of the invention. - In another embodiment of the present invention shown in
FIG. 3 , anRFID strap device 300 comprises atop conductor 302 which may function as an antenna (the second antenna) and which is coupled to, or in communication with, astrap conductor 304 via a separatingdielectric 306. Thetop conductor 302 may provide a path for frequencies that are different from a wanted operational frequency of the device. For example, thetop conductor 302 may provide a path for frequencies of signals at 2.45 GHz, when the wanted operational frequency of thestrap conductor 302 coupled to the antenna (not illustrated) is in the UHF band (e.g., generally 860 MHz-960 MHz, or, more particularly, 902 MHz-928 MHz in certain countries including the United States, China, and Japan, or alternatively, 865 MHz-868 MHz in certain other countries including the European Union, United Kingdom, and Russia) which prevents the interference from systems such as WiFi and Bluetooth, and, in the event of a strong signal, preventing damage to the RFID chip or creating a voltage high enough to cause a destructive arc. - The
top conductor 302 may also perform other functions, such as acting as an inductor across the RFID strap pads and hence theRFID chip 312, in order to assist with matching between thechip 312 and the antenna (not illustrated), or a filter (i.e., a band pass and/or band stop), using a configuration of inductance and capacitance or a transmission line resonator such as twin line, specifically designed to enhance or suppress a range or frequencies. For example, passing 902 MHz to 928 MHz and suppressing adjacent signals, and in another example a GSM Base To Mobile transmission at 935 MHz to 960 MHz. Thetop conductor 302 may also support another device to enhance the filtering function, such as a Surface Acoustic Wave device, dielectric resonator, magnetic material with a frequency dependent adsorption of RF energy, dielectric materials with a frequency dependent adsorption, resistive materials designed to adsorb energy over a large frequency range, and transmission line elements such as microstrip, stripline or coplanar waveguide. - In another embodiment, the thickness of the conductor may be chosen such that its conductivity varies with frequency. For example, a conductor of 2.7 μm thickness has one skin depth at 915 MHz, and hence its RF resistance is close to its DC resistance; however, at 13.56 MHz, where the skin depth is 22 μm, the RF resistance is much higher than the DC resistance, so energy at 13.56 MHz passing through the 2.7 μm thick top conductor would be relatively adsorbed.
- An additional use of the
top conductor 302 is to make its electrical properties a function of a sensed property. For example, the presence of a liquid across a gap, where the changed properties of thetop conductor 302 couple to the strap and antenna conductor as previously described, alters a parameter of the RFID tag, such as its sensitivity at a given frequency, in response to the sensed property. - In some embodiments, the separating dielectric 306 may be a plastic, such as PET, a paper, or a material with a relatively higher dielectric constant, for example in the range of 3 F/m to 10 F/m, such as a plastic incorporating a ceramic filler such as titanium dioxide, or any other suitable material as is known in the art. The
strap conductor 304, in one embodiment, may also operate as an antenna (the first antenna). Specifically, the first antenna may be coupled to, or in communication with, a pair ofpads 310 and anRFID chip 312 Thus, bothtop conductor 302 andstrap conductor 304 act as antennas to add functionality to theRFID strap device 300. -
FIG. 4A illustrates anRFID strap device 400 comprised of atop conductor 402 that is coupled to abottom conductor 404 via capacitance through a dielectric 406. And,FIG. 4B discloses anRFID strap device 408 comprised of atop conductor 410 coupled to abottom conductor 412 using direct ohmic connection means 414. For example, the direct ohmic connection means 414 can be any other suitable means known in the art for forming a direct ohmic connection, including mechanical crimping, electrochemical processes, one or more holes filled with a conductive ink. - As shown in
FIGS. 5A-B ,RFID strap device 500 comprises atop conductor 502 which has asecond antenna 504 formed thereon or attached thereto. Thesecond antenna 504 may operate at a higher frequency than a first antenna coupled to thestrap conductor 506. For example, the first antenna may operate in the range of 902-928 MHz and thesecond antenna 504 may operate in the range of 2400 MHz-2500 MHz. It is also contemplated that thesecond antenna 504 may operate at a lower frequency than a first antenna coupled to thestrap 506. For example, the first antenna may operate in the range of 902-928 MHz and thesecond antenna 504 may operate at a frequency of, or adjacent to, 13.56 MHz. Thissecond antenna 504 is also coupled to theRFID chip 508 and a pair ofstrap pads 510. This coupling can allow theRFID strap device 500 to communicate at a second (or higher) frequency than the first antenna and/or harvest energy to increase the performance of theRFID chip 508 at the frequency of the first antenna. - Additionally, as shown in
FIGS. 6A-B , theRFID strap device 600 can comprise atop conductor 602 that has asecond antenna 604 formed thereon, or attached thereto. Thesecond antenna 604 can be a coil type antenna or any other suitable antenna as is known in the art. Thesecond antenna 604 operates at a lower frequency than the first antenna (not illustrated) coupled to thestrap conductor 606. This first antenna is coupled to the pair ofstrap pads 608 andRFID chip 610. As inFIG. 5 , this coupling can allow operation of theRFID chip 610 at both frequencies (generated from the first antenna and second antenna 604) and also allows power to be harvested at the second frequency associated with thesecond antenna 604 on thetop conductor 602. - In an alternative embodiment shown in
FIGS. 7A-B , theRFID strap device 700 comprises a dual function top conductor (or second conductor) 702 that operates as asecond antenna 704. Thetop conductor 702/second antenna 704 has a dual function in that it operates at a different frequency than the first antenna (not illustrated), which is coupled to the pair ofstrap pads 708 andRFID chip 710, and also acts to improve the impedance match between theRFID chip 710 and the first antenna/strap conductor 706. - Additionally, as shown in
FIGS. 8A-B , theRFID strap device 800 comprises atop conductor 802 coupled to asensing device 804. This coupling forms an interdigital sensing structure to sense, for instance, but not limited to, the presence of liquids, dielectrics, or any sort of chemical. Further, the coupling between thesensing device 804 and thestrap conductor 806 via the pair ofstrap pads 808 and theRFID chip 810 can alter the characteristics of theRFID strap device 800 function. For example, it may reduce the sensitivity, change the operating frequency, or change a digital bit in theRFID strap device 800 communication. - As shown in
FIGS. 9A-B ,RFID strap device 900 comprises atop conductor 902 which acts as part of anemissive device 904 and is coupled to theRFID strap device 900. Specifically, theemissive device 904 is coupled to thestrap conductor 906 via the pair ofstrap pads 908 andRFID chip 910. Theemissive device 904 can then act to drive an LED, or other suitable structure as is known in the art. - The embodiment shown in
FIGS. 10A-B discloses a multi-portRFID strap device 1000 which comprises atop conductor 1002 functioning as asecond antenna 1004. Thetop conductor 1002 is coupled to, or in communication with, one ormore strap pads 1008 of a multi-port strap andRFID chip 1010 on thestrap conductor 1006 of the multi-portRFID strap device 1000. Thetop conductor 1002 can then function as an antenna, a sensor interface, an emissive device connection, or other suitable device. Specifically, if thetop conductor 1002 functions as thesecond antenna 1004, it can operate at a second frequency different from thestrap conductor 1006/first antenna, so that the energy from thesecond antenna 1004 is coupled to analternative strap pad 1008 on the multi-portRFID strap device 1000. - In an alternative embodiment shown in
FIGS. 11A-B , theRFID strap device 1100 comprises atop conductor 1102 which is connected to asemiconductor device 1104 and then coupled to astrap conductor 1106. Specifically, thesemiconductor device 1104 is coupled to thestrap conductor 1106 via a pair ofstrap pads 1108 andRFID chip 1110. Further, the coupling to theRFID strap device 1100 via the pair ofstrap pads 1108 may provide such things as communication of data, power, clock frequencies, etc. In one embodiment, thesemiconductor device 1104 may act as a Bluetooth beacon, where the 2.45 GHz transmission uses thetop conductor 1102 as an antenna, and power or data received by theRFID strap device 1100 via the antenna will control and/or power the beacon. In a further embodiment, thetop conductor 1102 may incorporate energy storage elements such as a battery or super-capacitor to power theRFID strap device 1100 or store energy to operate a sensor or other element. -
FIGS. 12A-C illustrate another embodiment wherein theRFID strap device 1200 comprises atop conductor 1202 which is initially either un-patterned or only partially patterned. Thistop conductor 1202 can then be changed by any suitable method known to those of ordinary skill in the art to remove material, such as, but not limited to, using a laser beam to ablate away portions of theconductor 1202. Alternatively, mechanical means known to those of ordinary skill in the art can be used to ablate away portions of theconductor 1202. The cutting can producestructures 1204 as previously described, such as a secondary antenna or sensor interface area; however, as thestrap conductor 1206 may be attached (coupled) to the antenna via the pair ofstrap pads 1208 andRFID chip 1210, the cutting may be in response to a measurable parameter, such as peak operating frequency, allowing adjustment of the frequency, either to deal with manufacturing tolerances or adjust the operating frequency of theRFID strap device 1200. -
FIGS. 13A-B illustrate another embodiment wherein theRFID strap device 1300 comprises atop conductor 1302 which comprises a printedconductor area 1304 which is printed with conductive ink. In some embodiments, the conductive ink contains silver, copper or graphene. Any other suitable conductive ink known to those of ordinary skill in the art may be used without departing from the scope of the present disclosure. The printedconductor area 1304 andtop conductor 1302 are coupled to thestrap conductor 1306. Specifically, the printedconductor area 1304 is coupled to thestrap conductor 1306 via the pair ofstrap pads 1308 andRFID chip 1310. The printedconductor area 1304 may be applied to theRFID strap device 1300 prior to attachment of the strap or post-attachment using any suitable means, such as inkjet, screen printing, flexographic printing or gravure printing. The printedconductor area 1304 can be used in any of the ways previously described above, for example, as a secondary antenna or sensor interface area. - What has been described above includes examples of the claimed subject matter. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the claimed subject matter, but one of ordinary skill in the art may recognize that many further combinations and permutations of the claimed subject matter are possible. Accordingly, the claimed subject matter is intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.
Claims (20)
1. A radio-frequency identification (RFID) tag comprising:
A RFID strap device comprising
a first strap conductor comprising a pair of strap pads and an RFID chip;
a second conductor;
a dielectric positioned between the first strap conductor and the second conductor; and
an antenna coupled to the RFID strap device.
2. The RFID tag of claim 1 , wherein the antenna is located on a base substrate.
3. The RFID tag of claim 1 , wherein the antenna operates at a first frequency.
4. The RFID tag of claim 3 , wherein the second conductor functions as a second antenna.
5. The RFID tag of claim 4 , wherein the second antenna operates at a frequency that differs from the first frequency.
6. The RFID tag of claim 1 , wherein the second conductor is coupled to the first strap conductor via capacitance through the dielectric.
7. The RFID tag of claim 1 , wherein the second conductor is coupled to the first strap conductor via direct ohmic connection means.
8. The RFID tag of claim 7 , wherein the direct ohmic connection means include mechanical crimping, electrochemical processes, or one or more holes filled with conductive ink.
9. A radio-frequency identification (RFID) strap device coupled to a first antenna comprising:
a first strap conductor comprised of a pair of strap pads connected to an RFID chip;
a second conductor comprised of a second antenna; and
a dielectric positioned between the first strap conductor and the second conductor, wherein the second antenna is configured to operate at a frequency different than the first antenna.
10. The RFID strap device of claim 9 , wherein the second antenna is coupled to the RFID chip.
11. The RFID strap device of claim 9 , wherein the second antenna increases impedance match between the RFID chip and the first antenna.
12. The RFID strap device of claim 9 , wherein the second conductor is coupled to a sensing device.
13. The RFID strap device of claim 9 , wherein the second conductor is coupled to an emissive device.
14. The RFID strap device of claim 9 , wherein the second conductor is coupled to a semiconductor device.
15. The RFID strap device of claim 9 , wherein the second conductor is printed with conductive ink.
16. A method of incorporating a second conductor into a radio-frequency identification (RFID) strap device comprising:
providing a first strap conductor comprised of a pair of strap pads;
connecting an RFID chip to said pair of strap pads;
positioning a dielectric between the first strap conductor and the second conductor; and
coupling the RFID strap device to an antenna.
17. The method of claim 16 , further comprising forming a second antenna on the second conductor.
18. The method of claim 17 , further comprising operating the second antenna at a frequency different than the antenna.
19. The method of claim 16 , further comprising coupling the second conductor to a sensing device.
20. The method of claim 16 , further comprising coupling the second conductor to an emissive device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/661,199 US20220374674A1 (en) | 2018-04-20 | 2022-04-28 | Rfid straps with a top and bottom conductor |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862660510P | 2018-04-20 | 2018-04-20 | |
US16/389,284 US11347992B2 (en) | 2018-04-20 | 2019-04-19 | RFID straps with a top and bottom conductor |
US17/661,199 US20220374674A1 (en) | 2018-04-20 | 2022-04-28 | Rfid straps with a top and bottom conductor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/389,284 Continuation US11347992B2 (en) | 2018-04-20 | 2019-04-19 | RFID straps with a top and bottom conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220374674A1 true US20220374674A1 (en) | 2022-11-24 |
Family
ID=66429626
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/389,284 Active US11347992B2 (en) | 2018-04-20 | 2019-04-19 | RFID straps with a top and bottom conductor |
US17/661,199 Abandoned US20220374674A1 (en) | 2018-04-20 | 2022-04-28 | Rfid straps with a top and bottom conductor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/389,284 Active US11347992B2 (en) | 2018-04-20 | 2019-04-19 | RFID straps with a top and bottom conductor |
Country Status (5)
Country | Link |
---|---|
US (2) | US11347992B2 (en) |
EP (1) | EP3782225A1 (en) |
JP (1) | JP2021522571A (en) |
BR (1) | BR112020021426A2 (en) |
WO (1) | WO2019204698A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112021021168A8 (en) | 2019-04-22 | 2023-02-28 | Avery Dennison Retail Information Services Llc | SELF-ADHESIVE TAPES FOR RFID DEVICES |
JP7455406B2 (en) * | 2019-10-21 | 2024-03-29 | 株式会社システムジャパン | Antenna device and furniture with the antenna device |
CN111882017B (en) * | 2020-06-30 | 2024-01-23 | 复旦大学 | RFID chip and super capacitor three-dimensional integrated system and preparation method thereof |
JP2023549659A (en) | 2020-10-23 | 2023-11-29 | エイヴェリー デニソン リテール インフォメーション サービシズ リミテッド ライアビリティ カンパニー | How to detect variable weight price items in a detector-based inventory management and/or shopping system |
US20230394254A1 (en) | 2020-10-23 | 2023-12-07 | Avery Dennison Retail Information Services Llc | Systems containing multiple read zones and methods of use thereof |
WO2022108706A1 (en) | 2020-11-18 | 2022-05-27 | Avery Dennison Retail Information Services Llc | Methods and systems for determining whether an article is leaving or returning to a merchandising location |
WO2023178287A1 (en) | 2022-03-16 | 2023-09-21 | Avery Dennison Retail Information Services, Llc | Methods for identifying an event of concern for an item in a supply chain |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060043198A1 (en) * | 2004-09-01 | 2006-03-02 | Forster Ian J | RFID device with combined reactive coupler |
US20080143480A1 (en) * | 2006-12-13 | 2008-06-19 | 3M Innovative Properties Company | Microwaveable radio frequency identification tags |
US20150144702A1 (en) * | 2013-11-25 | 2015-05-28 | VivaLnk Limited (Cayman Islands) | Stretchable multi-layer wearable tag capable of wireless communications |
Family Cites Families (88)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD383465S (en) | 1995-11-30 | 1997-09-09 | Hideki Okuchi | Auxiliary antenna for cellular phone |
DE19654902C2 (en) | 1996-03-15 | 2000-02-03 | David Finn | Smart card |
US8052061B2 (en) | 2002-08-07 | 2011-11-08 | Vanguard Identification Systems, Inc. | Permanent RFID luggage tag with security features |
WO2001063189A1 (en) | 2000-02-28 | 2001-08-30 | Dai Nippon Printing Co., Ltd. | Automatic refrigerator system, refrigerator, automatic cooking system, and microwave oven |
JP2001317741A (en) | 2000-02-28 | 2001-11-16 | Dainippon Printing Co Ltd | Food automatic cooking system, and microwave oven |
JP2002150248A (en) | 2000-11-14 | 2002-05-24 | Dainippon Printing Co Ltd | Data carrier device with impact sensitive sensor |
US6924688B1 (en) * | 2000-11-28 | 2005-08-02 | Precision Dynamics Corporation | Rectifying charge storage device with antenna |
WO2002099764A1 (en) | 2001-06-05 | 2002-12-12 | Motorola, Inc. | Capacitively powered data communication system with tag and circuit carrier apparatus for use therein |
JP2003030612A (en) * | 2001-07-19 | 2003-01-31 | Oji Paper Co Ltd | Ic chip mounting body |
JP2003087044A (en) | 2001-09-12 | 2003-03-20 | Mitsubishi Materials Corp | Antenna for rfid and rfid system having the antenna |
US7214569B2 (en) | 2002-01-23 | 2007-05-08 | Alien Technology Corporation | Apparatus incorporating small-feature-size and large-feature-size components and method for making same |
AU2003253210A1 (en) * | 2002-08-08 | 2004-02-25 | Bnc Ip Switzerland Gmbh | Multi-frequency identification device |
US7224280B2 (en) | 2002-12-31 | 2007-05-29 | Avery Dennison Corporation | RFID device and method of forming |
US11334728B2 (en) | 2003-03-03 | 2022-05-17 | Lone Star Scm Systems, Lp | Interrogator and interrogation system employing the same |
US7652636B2 (en) | 2003-04-10 | 2010-01-26 | Avery Dennison Corporation | RFID devices having self-compensating antennas and conductive shields |
US20040234653A1 (en) | 2003-05-22 | 2004-11-25 | Cogley Paul A. | Susceptor tray and mirowavable dough products |
JP2005101987A (en) * | 2003-09-25 | 2005-04-14 | Matsushita Electric Works Ltd | Integrated radio id tag |
WO2005045986A1 (en) | 2003-11-06 | 2005-05-19 | Murata Manufacturing Co., Ltd. | Resonator, filter, irreversible circuit element, and communication unit |
US6999028B2 (en) | 2003-12-23 | 2006-02-14 | 3M Innovative Properties Company | Ultra high frequency radio frequency identification tag |
JP2005216044A (en) * | 2004-01-30 | 2005-08-11 | Seiko Precision Inc | Non-contact ic card and holder for non-contact ic card |
JP2005252853A (en) | 2004-03-05 | 2005-09-15 | Fec Inc | Antenna for rf-id |
US20120062367A1 (en) | 2004-04-06 | 2012-03-15 | Vanguard Identification Systems, Inc. | Near field communication enabled permanent rfid luggage tag |
JP3960329B2 (en) | 2004-11-02 | 2007-08-15 | 松下電器産業株式会社 | Cooker and its program |
WO2006048964A1 (en) | 2004-11-02 | 2006-05-11 | Matsushita Electric Industrial Co., Ltd. | Heating device |
US7615479B1 (en) | 2004-11-08 | 2009-11-10 | Alien Technology Corporation | Assembly comprising functional block deposited therein |
JP4281683B2 (en) | 2004-12-16 | 2009-06-17 | 株式会社デンソー | IC tag mounting structure |
GB2423366B (en) | 2005-02-16 | 2010-02-24 | Cintex Ltd | Metal detector |
JP2007086863A (en) | 2005-09-20 | 2007-04-05 | Fuji Xerox Co Ltd | Non-contact ic tag, package of member equipped with non-contact ic tag and device using member equipped with non-contact ic tag |
KR100717881B1 (en) | 2005-09-23 | 2007-05-14 | 한국전자통신연구원 | Mobile RFID Reader and the Control Method thereof |
JP2007089054A (en) | 2005-09-26 | 2007-04-05 | Nippon Telegr & Teleph Corp <Ntt> | Antenna of rfid tag |
JP4761952B2 (en) | 2005-12-14 | 2011-08-31 | 富士通株式会社 | RFID tag |
USD553124S1 (en) | 2006-01-05 | 2007-10-16 | Novariant Inc. | Roof module |
US7391325B2 (en) * | 2006-01-13 | 2008-06-24 | Honeywell International Inc. | Multifunctional multichip system for wireless sensing |
US8786510B2 (en) | 2006-01-24 | 2014-07-22 | Avery Dennison Corporation | Radio frequency (RF) antenna containing element and methods of making the same |
EP1821241A3 (en) | 2006-02-15 | 2008-07-23 | Assa Abloy AB | Hybrid frequency contactless transponder unit, module for and method of manufacturing |
USD546819S1 (en) | 2006-02-17 | 2007-07-17 | Impinj, Inc. | Radio frequency identification tag antenna assembly |
WO2008007368A2 (en) | 2006-07-10 | 2008-01-17 | Rf Dynamics Ltd. | Food preparation |
US7646304B2 (en) | 2006-04-10 | 2010-01-12 | Checkpoint Systems, Inc. | Transfer tape strap process |
US7714535B2 (en) | 2006-07-28 | 2010-05-11 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device |
US9607188B2 (en) | 2014-09-29 | 2017-03-28 | Rfmicron, Inc. | Radio frequency identification (RFID) tag(s) and sensor(s) |
US20080122631A1 (en) | 2006-11-29 | 2008-05-29 | Intermec Ip Corp. | Multiple band / wide band radio frequency identification (rfid) tag, such as for use as a metal mount tag |
AU2007342775B2 (en) | 2007-01-11 | 2011-08-11 | Lg Electronics Inc. | Cooking appliance, controlling system for cooking device and controlling method for cooking device |
US7965186B2 (en) | 2007-03-09 | 2011-06-21 | Corning Cable Systems, Llc | Passive RFID elements having visual indicators |
US7744005B2 (en) | 2008-01-16 | 2010-06-29 | Taiwan Name Plate Co., Ltd. | Induction card with a printed antenna |
USD634738S1 (en) | 2008-01-30 | 2011-03-22 | Yfy Rfid Technologies Company Limited | RFID antenna |
WO2009110381A1 (en) * | 2008-03-03 | 2009-09-11 | 株式会社村田製作所 | Wireless ic device and wireless communication system |
US8289165B2 (en) | 2008-06-11 | 2012-10-16 | Avery Dennison Corporation | RFID device with conductive loop shield |
EP2306588B1 (en) | 2008-06-26 | 2012-10-17 | Fujitsu Limited | Rfid tag |
US20100000980A1 (en) | 2008-07-02 | 2010-01-07 | Bogdan Popescu | Induction Heating System with Versatile Inductive Cartridge |
JP5094630B2 (en) | 2008-08-11 | 2012-12-12 | 株式会社日立製作所 | IC tag |
US8228197B2 (en) | 2008-11-10 | 2012-07-24 | Pouch Pac Innovations, Llc | Flexible pouch with smart tags |
US8174388B2 (en) | 2008-12-10 | 2012-05-08 | Sensormatic Electronics, LLC | Method and system for deactivation of combination EAS/RFID tags |
CN102273012B (en) | 2009-01-09 | 2013-11-20 | 株式会社村田制作所 | Wireless IC device, wireless IC module and wireless IC module manufacturing method |
US9277601B2 (en) | 2009-02-26 | 2016-03-01 | International Business Machines Corporation | Operating an appliance based on cooking instructions embedded in an RFID product tag |
US8833664B2 (en) | 2009-12-18 | 2014-09-16 | Yu Yung Choi | Enhanced performance and security RFID device |
JP5464028B2 (en) | 2010-04-19 | 2014-04-09 | 凸版印刷株式会社 | IC label for preventing counterfeiting |
US8511569B1 (en) | 2010-11-02 | 2013-08-20 | Impinj, Inc. | RFID integrated circuit to strap mounting system |
ES2739222T3 (en) | 2010-06-14 | 2020-01-29 | Avery Dennison Corp | Method of manufacturing a radiofrequency identification device |
WO2012020748A1 (en) | 2010-08-10 | 2012-02-16 | 株式会社村田製作所 | Printed wire board and wireless communication system |
US8646695B2 (en) | 2010-10-01 | 2014-02-11 | Disney Enterprises, Inc. | Combined HF and UHF RFID device |
US9414442B2 (en) | 2010-11-29 | 2016-08-09 | Goji Limited | System, apparatus, and method for cooking using RF oven |
EP2839536A1 (en) | 2012-04-19 | 2015-02-25 | Smartrac IP B.V. | Integrated loop structure for radio frequency identification |
US20130313328A1 (en) | 2012-05-25 | 2013-11-28 | Omni-Id Cayman Limited | Shielded Cavity Backed Slot Decoupled RFID TAGS |
JP6050961B2 (en) * | 2012-06-18 | 2016-12-21 | トッパン・フォームズ株式会社 | Non-contact data transmitter / receiver |
USD697900S1 (en) | 2012-07-18 | 2014-01-21 | Kmw Inc. | Antenna radome |
MX342900B (en) | 2012-07-19 | 2016-10-18 | 3M Innovative Properties Co | Electromagnetic shielding label. |
BR112015032345B8 (en) | 2013-06-24 | 2022-08-30 | Avery Dennison Corp | MERCHANDISE LABELS USING AN ANTENNA CONDUCTOR |
US9378451B2 (en) | 2013-08-14 | 2016-06-28 | Avery Dennison Corporation | RFID labels with digitally printed indicia for matching merchandise appearance characteristics |
USD716774S1 (en) | 2014-04-04 | 2014-11-04 | Avery Dennison Corporation | RFID inlay |
US9874603B2 (en) | 2014-07-07 | 2018-01-23 | Avery Dennison Retail Information Services, Llc | System and method for capacitive coupling testing |
USD763833S1 (en) | 2014-10-01 | 2016-08-16 | Ohio State Innovation Foundation | RFID tag |
WO2016060938A2 (en) * | 2014-10-08 | 2016-04-21 | RF Micron, Inc. | Radio frequency identification (rfid) moisture tag(s) and sensors with extended sensing via capillaries |
USD880460S1 (en) | 2015-06-12 | 2020-04-07 | Avery Dennison Retail Information Services, Llc | Antenna |
US10268945B1 (en) | 2015-06-30 | 2019-04-23 | Amazon Technologies, Inc. | RFID tags |
US9418262B1 (en) | 2015-07-22 | 2016-08-16 | Vectare, Inc. | Method to differentiate radio frequency identification tags from other metal objects |
JP6485555B2 (en) * | 2015-12-02 | 2019-03-20 | 株式会社村田製作所 | Sanitary goods with RFID tags for moisture detection |
CN208423178U (en) | 2016-01-18 | 2019-01-22 | 株式会社村田制作所 | Antenna assembly and electronic equipment |
USD795228S1 (en) | 2016-03-04 | 2017-08-22 | Airgain Incorporated | Antenna |
US10311355B1 (en) | 2016-03-31 | 2019-06-04 | Amazon Technologies, Inc. | RFID tags |
KR102556536B1 (en) | 2016-09-30 | 2023-07-17 | 삼성전자주식회사 | A cooking apparatus and a method for controlling the same |
USD812045S1 (en) | 2016-10-06 | 2018-03-06 | Avery Dennison Retail Information Services, Llc | Antenna |
GB2554952A (en) | 2016-10-17 | 2018-04-18 | Parkside Flexibles Europe Ltd | Electronic identifier for packaging |
CN114781571A (en) | 2016-12-29 | 2022-07-22 | 艾利丹尼森零售信息服务公司 | RFID tag with shielding structure for incorporation into microwavable food packaging |
USD837769S1 (en) | 2017-05-22 | 2019-01-08 | Shenzhen Antop Technology Limited | Antenna |
WO2019204704A1 (en) | 2018-04-20 | 2019-10-24 | Avery Dennison Retail Information Services, Llc | Shielded rfid tags for incorporation into microwavable food packaging |
JP2020035422A (en) | 2018-06-27 | 2020-03-05 | エイヴェリー デニソン リテール インフォメーション サービシズ リミテッド ライアビリティ カンパニー | High-field emission tolerant rfid tags attached to products to control cooking process |
CN109389203A (en) | 2018-10-11 | 2019-02-26 | 江苏金羿先磁新材料科技有限公司 | A kind of anti-metal RFID label tag frequency point offset adjustment method |
USD855039S1 (en) | 2018-10-26 | 2019-07-30 | Pvc Antenna Inc. | Antenna |
-
2019
- 2019-04-19 JP JP2020558469A patent/JP2021522571A/en active Pending
- 2019-04-19 BR BR112020021426-4A patent/BR112020021426A2/en unknown
- 2019-04-19 US US16/389,284 patent/US11347992B2/en active Active
- 2019-04-19 EP EP19722403.3A patent/EP3782225A1/en active Pending
- 2019-04-19 WO PCT/US2019/028275 patent/WO2019204698A1/en active Application Filing
-
2022
- 2022-04-28 US US17/661,199 patent/US20220374674A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060043198A1 (en) * | 2004-09-01 | 2006-03-02 | Forster Ian J | RFID device with combined reactive coupler |
US20080143480A1 (en) * | 2006-12-13 | 2008-06-19 | 3M Innovative Properties Company | Microwaveable radio frequency identification tags |
US20150144702A1 (en) * | 2013-11-25 | 2015-05-28 | VivaLnk Limited (Cayman Islands) | Stretchable multi-layer wearable tag capable of wireless communications |
Also Published As
Publication number | Publication date |
---|---|
BR112020021426A2 (en) | 2021-01-19 |
CN112236900A (en) | 2021-01-15 |
US11347992B2 (en) | 2022-05-31 |
US20190325284A1 (en) | 2019-10-24 |
WO2019204698A1 (en) | 2019-10-24 |
EP3782225A1 (en) | 2021-02-24 |
JP2021522571A (en) | 2021-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20220374674A1 (en) | Rfid straps with a top and bottom conductor | |
US9871294B2 (en) | Dual band RFID device and method of formation | |
US7768407B2 (en) | Foldable RFID device interposer and method | |
US8960561B2 (en) | Wireless communication device | |
KR101986376B1 (en) | Radio frequency identification tag | |
US11120323B2 (en) | Method of using shielded RFID straps with RFID tag designs | |
WO2013156389A1 (en) | Integrated loop structure for radio frequency identification | |
JP4676445B2 (en) | Antenna and RFID tag equipped with the same | |
US8899489B2 (en) | Resonant circuit structure and RF tag having same | |
US10846586B2 (en) | Electronic wireless communication device having two electronic chips and a method of fabricating such a device | |
CN112236900B (en) | RFID carrier tape with top and bottom conductors | |
US11101567B2 (en) | Miniaturized planar inverted folded antenna (PIFA) for mountable UHF tags design | |
KR101349519B1 (en) | Antenna | |
CN211699013U (en) | Double-frequency RFID anti-metal signboard intelligent device | |
KR101139719B1 (en) | Noncontact tag antenna mountable on metallic surface |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |