WO2015135188A1 - 一种天线及终端 - Google Patents
一种天线及终端 Download PDFInfo
- Publication number
- WO2015135188A1 WO2015135188A1 PCT/CN2014/073408 CN2014073408W WO2015135188A1 WO 2015135188 A1 WO2015135188 A1 WO 2015135188A1 CN 2014073408 W CN2014073408 W CN 2014073408W WO 2015135188 A1 WO2015135188 A1 WO 2015135188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- branch
- circuit board
- sub
- resonant frequency
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 238000002955 isolation Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005404 monopole Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
-
- 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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- 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
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
-
- 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
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
Definitions
- the present invention relates to the field of communications technologies, and in particular, to an antenna and a terminal. Background technique
- RF Radio Frequency
- the IEEE 802.11 standard defines the working frequency bands for wireless local area networks (WLANs: Wireless Local Area Networks) to be 2.4G (2400MHz ⁇ 2500MHz) and 5G (4900MHz ⁇ 5900MHz). Different product forms, there are many WiFi antennas that can cover these two working frequency bands. For gateways, customer terminal equipment (CPE: Customer Premise Equipment), there are wall-mounted dipoles or IFA, Loop, etc. printed on the PCB. Antenna form; For mobile wifi hotspot products, there are antennas such as Loop, monopole, and IF A.
- the WiFi antenna size of these products is generally too large. Take a mobile hotspot product with a size of about 100mm*64mm* 14mm as an example.
- the space size of the WiFi antenna is about 25mm*5mm*5mm.
- the WiFi ceramic antenna is a better miniaturization solution, which can occupy a small size level of about 10mm*5mm of PCB board clearance space, but currently it is limited to the 2.4G frequency band and cannot be extended to the 5G frequency band.
- WiFi antennas usually require a quarter-wavelength resonant length requirement.
- the antenna space is required to be about 25mm*5mm*5mm, and some can be optimized to 20mm*5mm*5mm. If the size is further shortened, the performance of the antenna will be affected. .
- Embodiments of the present invention provide an antenna and a terminal, which can ensure that an antenna covers multiple frequency bands while reducing an antenna size.
- an embodiment of the present invention provides an antenna, including: a first antenna branch, printed on a first side of a circuit board, the first antenna branch includes a first sub-segment; and a grounding branch printed on the a first side, the grounding branch includes a grounding subsection, the first subsection and the ground subsection are staggered to form a slot, and the first antenna branch and the grounding branch are coupled to each other through a slot; the second antenna branch And printed on the second side of the circuit board, the second surface and the first surface are two opposite sides of the circuit board; a first feed source electrically connecting the first antenna branch;
- the second antenna branch is electrically connected to a metal via on the circuit board, the metal via is electrically connected to the first feed, the first antenna branch, the ground branch, and the first A feed forms a first antenna for generating a first resonant frequency; the first antenna stub, the second antenna stub and the first feed form a second antenna for generating a second resonant frequency.
- the cross-index of the first sub-segment is inversely proportional to the length of the antenna.
- the antenna further includes: a first capacitor electrically connecting the end of the first antenna node and the circuit a grounding end of the board, configured to reduce an electrical length of the first antenna branch; and/or a second capacitor electrically connected to the second antenna branch end and the ground end of the circuit board, for reducing the number The electrical length of the two antenna branches.
- the present invention provides a terminal, comprising: a housing; a circuit board disposed on a surface or an inner portion of the housing; a first antenna disposed on a first side of the circuit board; a processor, an electrical connection
- the first antenna is configured to process the transceiver signal of the first antenna, where the first antenna includes: a first antenna segment printed on a first side of the circuit board, where the first antenna segment includes a first sub-section; a grounding branch, printed on the first side, the grounding branch includes a grounding sub-section, the first sub-section and the ground sub-section are staggered to form a gap, and the first antenna branch
- the grounding branches are coupled to each other through a slot; the second antenna branch is printed on the second surface of the circuit board, and the second surface and the first surface are opposite sides of the circuit board;
- the second antenna branch is electrically connected to the metal via of the circuit board, and the metal via is electrically connected to the first feed, a first antenna branch, the grounding branch, and the
- the cross-index of the first sub-segment is inversely proportional to the length of the antenna.
- the first antenna further includes: a first capacitor electrically connecting the end of the first antenna node and the a ground end of the circuit board for reducing an electrical length of the first antenna branch; and/or a second capacitor electrically connected to the end of the second antenna branch and the ground of the circuit board for reducing The electrical length of the second antenna branch is described.
- the terminal further includes: a second antenna, configured to The second side of the circuit board, the second side is the opposite side of the first side.
- the terminal further includes: a third antenna, configured to be a third side of the circuit board, the third side is adjacent to the first side, the third antenna is configured to generate a third resonant frequency, and a fourth antenna is disposed on the third side, a fourth antenna is configured to generate a first sub-resonant frequency of the third resonant frequency; a fifth antenna is disposed on a fourth side of the circuit board, the fourth side is opposite to the third side, a fifth antenna is configured to generate the third resonant frequency; a sixth antenna is disposed on the fourth side, and the sixth antenna is configured to generate the first sub-resonant frequency in the third resonant frequency.
- the terminal further includes: a first resonant branch, disposed on the third side, between the third antenna and the fourth antenna, the size of the first resonant branch is the first sub-resonant frequency a fourth wavelength; and/or a second resonant branch, disposed on the fourth side, between the fifth antenna and the sixth antenna, the size of the second resonant branch is the first sub One quarter wavelength of the resonant frequency.
- the terminal is a mobile phone or a wearable device.
- an antenna including: a first antenna node, a ground node and a second antenna node, a first feed, a first antenna node, the ground node, and the first feed Forming a first antenna for generating a first resonant frequency; the first antenna branch, the second antenna branch, and the first feed forming a second antenna for generating a second resonant frequency, so the antenna can
- the covering includes a first resonant frequency and a second resonant frequency, and the first sub-segment of the first antenna branch is staggered with the ground sub-segment of the grounding branch to form a gap, so that a capacitive effect can be formed, and the first antenna branch forms a LC with the ground branch
- the LC circuit exhibits a left-hand transmission line effect, thereby reducing the length of the first antenna branch and the ground branch, thereby ensuring that the overall size of the antenna is reduced when the antenna covers multiple frequency bands.
- FIG. 1 is a schematic structural diagram of a first antenna branch and a ground branch of a first antenna on a first side of a circuit board according to an embodiment of the present invention
- FIG. 1b is a schematic structural diagram of a second antenna branch of a first antenna located on a second side of the circuit board according to an embodiment of the present invention
- Figure lc is a schematic structural diagram of a second antenna according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of an antenna including a first capacitor and a second capacitor according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of an antenna according to Embodiment 1 of the present invention
- FIG. 4 is a schematic diagram of return loss of an antenna according to Embodiment 1 of the present invention.
- FIG. 5 is a schematic structural diagram of an antenna according to Embodiment 2 of the present invention
- FIG. 6 is a schematic diagram of return loss of an antenna according to Embodiment 2 of the present invention
- FIG. 7 is a schematic structural diagram of an antenna according to Embodiment 3 of the present invention.
- FIG. 8 is a schematic diagram of an index of return loss and isolation of an antenna according to Embodiment 3 of the present invention
- FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a circuit board of a terminal with a WiFi antenna and an LTE antenna according to an embodiment of the present invention. detailed description
- the present invention provides an antenna, which includes: a first antenna branch, a ground branch, and a second antenna branch, and a first feed, in the prior art, where the antenna size is too large when the antenna covers multiple frequency bands at the same time.
- a first antenna branch, the ground branch, and the first feed forming a first antenna for generating a first resonant frequency; the first antenna stub, the second antenna stub, and the first feed
- the source forms a second antenna for generating a second resonant frequency, so that the antenna can cover the first resonant frequency and the second resonant frequency, and the first sub-segment of the first antenna branch and the ground sub-section of the ground branch are alternately arranged.
- the LC circuit exhibits a left-hand transmission line effect, thereby reducing the length of the first antenna branch and the ground branch, thereby ensuring coverage of multiple bands in the antenna At the time, the overall size of the antenna is reduced.
- the terminal herein may be a wireless terminal or a wired terminal, the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. .
- the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) or with a mobile terminal Computer, for example, can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, They exchange language and/or data with the wireless access network.
- a radio access network eg, RAN, Radio Access Network
- a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
- an embodiment of the present invention provides an antenna.
- the antenna may have multiple structures.
- the following two types are introduced. Of course, in the specific implementation process, the following two situations are not limited.
- FIG. 1 and FIG. 1b where FIG. la is a schematic structural diagram of a first antenna branch and a ground branch, and FIG. 1b is a schematic structural diagram of a second antenna branch.
- the antenna includes:
- the first antenna branch 10 printed on the first side 20a of the circuit board 20, the first antenna branch 10 includes a first sub-segment 10a;
- the grounding branch 11 is printed on the first surface 20a, the grounding branch 11 includes a grounding sub-segment 11a, and the first sub-segment 10a and the grounding sub-segment 11a are staggered to form a slot, the first antenna
- the branch node 10 and the grounding branch 11 are coupled to each other through a gap, so that the first antenna branch 10 and the grounding branch 11 form a coupling capacitance effect, so that the first antenna branch 10 and the grounding branch 11 form an LC circuit, and the LC circuit exhibits a left-hand transmission line effect. , can reduce the size of the antenna.
- the first antenna branch 10 may be: an IFA antenna, a monopole antenna or a loop antenna (loop antenna), and the like.
- the first antenna branch 10 is an IFA antenna or a loop antenna
- the first antenna branch 10 is electrically connected to the ground of the PCB
- the ground branch 11 is electrically connected to the ground of the PCB.
- the first sub-section 10a and the ground sub-section 11a are staggered, there is no electrical connection between the first sub-section 10a and the ground sub-section 11a, and there is a gap, so that the first antenna branch 10 and the ground branch 11 form a slot coupling.
- the size of the gap ranges from about 0.1 mm to about 0.5 mm.
- the second antenna branch 12 is printed on the second surface 20b of the circuit board 20, wherein the first surface 20a and the second surface 20b are opposite sides of the circuit board 20.
- the second antenna branch 12 can be: an IFA antenna, a monopole antenna, a loop antenna (ring antenna), and the like.
- the second antenna branch 12 is electrically connected to the ground of the PCB.
- the second antenna branch 12 is electrically connected to the metal via 20c on the circuit board, and the metal via 20c is electrically connected to the first feed 13, the first antenna branch 10, the ground branch 11 and The first feed 13 forms a first antenna for generating a first resonant frequency, and the first antenna branch 10, the second antenna branch 12 and the first feed 13 form a second antenna for A second resonant frequency is generated; for example, the first resonant frequency is, for example, 2.4 GHz to 2.5 GHz, and the second resonant frequency is, for example, 4.9 GHz to 5.9 GHz.
- FIG. 1b shows a schematic diagram of the antenna layout of the second surface 20b of the circuit board.
- the second antenna branch 12 is printed on the second surface 20b of the circuit board 20, and the second surface 20b. A face opposite to the first surface 20a.
- the dotted line in Figure 1b shows the antenna layout of the first side 20a of the board, and the second side 20b does not have an antenna.
- the antenna includes the following structure:
- the first antenna branch 10 is printed on the first side 20a of the circuit board 20, and the first antenna branch 10 Including a first sub-section 10a;
- the grounding branch 11 is printed on the first surface 20a, the grounding branch 11 includes a grounding sub-segment 11a, and the first sub-segment 10a and the grounding sub-segment 11a are staggered to form a gap, and the first antenna branch 10 and the grounding branch 11 are coupled to each other through a slit;
- a second antenna stub 12 is printed on the circuit board 20.
- the second antenna branch 12 may be printed on the first surface 20a or the second surface 20b of the circuit board 20, and the second antenna branch 12 is printed on the first surface 20a in FIG.
- the first feed 14 is electrically connected to the first antenna segment 10 , the first antenna segment 10 , the ground branch 11 and the first feed 14 form a first antenna, and is used for forming a first antenna Generating a first resonant frequency;
- a second feed 15 is electrically connected to the grounding branch 11 , and the second antenna branch 12 and the second feed 15 form a second antenna for generating a second resonant frequency.
- the signals of the first resonant frequency and the second resonant frequency are transmitted through different feeds, and the antenna traces of the first resonant frequency and the second resonant frequency can be separately debugged, thereby preventing the first resonance.
- the traces of the frequency and the second resonant frequency interact with each other.
- the signals of the first resonant frequency and the second resonant frequency are transmitted through different feeds, which can save the combiner in the circuit system of the antenna, thereby bringing about a reduction in device cost.
- the number of intersections of the first antenna sub-sections is inversely proportional to the length of the antenna.
- the number of the first sub-sections 10a is the same as the number of the ground sub-sections 11a, and the number of inter-joints of the first sub-sections 10a may be any number, for example: 1, 3, 4, etc., where the first The more the number of fingers of the sub-segment 10a, the higher the intensity of the coupling capacitance effect between the first sub-segment 10a and the ground sub-segment 11a, and the length of the antenna, that is, the intersection of the first sub-section 10a, can be further reduced.
- the number of fingers is inversely proportional to the length of the antenna. The inverse relationship means that the length of the antenna becomes shorter as the number of fingers of the first sub-section 10a increases.
- the antenna further includes:
- a first capacitor 16 electrically connecting the end of the first antenna segment 10 and the ground of the circuit board 20 End 20d, for reducing the electrical length of the first antenna segment 10;
- the second capacitor 17 is electrically connected to the end of the second antenna branch 12 and the ground end 20d of the circuit board 20 for reducing the electrical length of the second antenna branch 12.
- the effective electrical length of the antenna branch can be reduced, so that the low-frequency resonance point of the antenna branch is shifted to a high degree, thereby shortening the length of the antenna branch.
- the first capacitor 16 is, for example, 2pF, 1.5pF, and the like
- the second capacitor 17 is, for example, 2pF or 1.3pF, which may be the same or different, and is not limited in the embodiment of the present application.
- the first antenna branch 10, the grounding branch 11 and the second antenna branch 12 may be arranged on the edge of the circuit board 20, that is, the first antenna branch 10 may be arranged on one side of the circuit board 20, the grounding branch 11 may be disposed on the other side of the circuit board 20 adjacent to one side, and the second antenna branch 12 may be disposed on the other side of the circuit board 20 adjacent to the other side, since the three sides thereof are the metal ground of the circuit board 20d, the structure formed by the first antenna branch 10, the grounding branch 11 and the second antenna branch 12 is embedded in the circuit board, which can improve the utilization of the circuit board.
- the antenna in the present invention will be described below through several specific embodiments.
- the following embodiments mainly introduce several possible implementation structures of the antenna. It should be noted that the examples in the present invention are only for explaining the present invention and are not intended to limit the present invention. All the embodiments in accordance with the idea of the present invention are within the scope of the present invention, and those skilled in the art will naturally know how to make modifications according to the idea of the present invention.
- the antenna introduced in this embodiment includes:
- the first antenna branch 10, printed on the front surface 20a of the circuit board 20, the first antenna branch 10 may be an IFA antenna, having a length of about 7 mm, including two first sub-sections 10a;
- the grounding branch 11 is printed on the front surface 20a of the circuit board 20 and has a "U" shape, including two ground sub-sections 11a, and the grounding branch 11 is removed from the ground sub-section 11a by a length of 7.5 mm;
- the second antenna branch 12 is printed on the reverse side 20b of the circuit board 20, and the second antenna branch 12 is electrically connected
- the metal vias 20c on the circuit board 20 are electrically connected;
- the first feed 13 is electrically connected to the first antenna branch 10, and the first feed 13 is electrically connected to the metal via 20c;
- the first antenna branch 10, the grounding branch 11 and the feed 13 form a first antenna for generating a frequency of 2.4 GHz to 2.5 GHz; the first antenna branch 10, the second antenna branch 12 and The first feed 13 forms a second antenna for generating a frequency of 4.9 GHz to 5.9 GHz.
- the length L of the antenna is the length from the leftmost end of the first antenna branch 10 to the rightmost end of the ground branch 11 , which is 15 mm in total; and the antenna width W is 3 mm to 4.5 mm.
- the return loss curve obtained by simulating the antenna shows that the return loss at 2.4 GHz is -10.9510 dB (ie: ml) at 2.5 GHz.
- the return loss is -7.6803dB (ie: m2;), and the return loss between 2.4GHz and 2.5GHz is between -7.6803dB and 10.9510dB, which is less than -5dB;
- the return loss at GHz is -6.9961dB (ie: at m3)
- the return loss at 5.9GHz is -5.7666dB (ie: at m4)
- the return loss is between 4.9GHz and 5.9GHz. It lies between -5.7666dB and 6.9961dB, so it is also less than -5dB.
- the antenna can ensure the length reduction while covering 2.4 GHz. 2.5GHz and 4.9GHz ⁇ 5.9GHz.
- the efficiency between the 2.4 GHz and 2.5 GHz bands basically exceeds 50% to meet the demand; and between 4.9 GHz and 5.9 GHz, the efficiency is higher than 2.4 GHz to 2.5. GHz is low, but most of it is more than 50%, so data transmission is also possible. It can be seen that the antenna can cover the 2.4GHz ⁇ 2.5GHz and 4.9GHz ⁇ 5.9GHz frequency bands at the same time.
- the antenna described in the embodiment of the present application includes the following structure: a first antenna branch 10, printed on the front surface 20a of the circuit board 20, which is an IFA antenna, including three first sub-sections 10a;
- the grounding branch 11 is printed on the front surface 20a of the circuit board 20 and includes three grounding subsections 11a; the second antenna branch 12 is printed on the back surface 20b of the circuit board 20, and the second antenna branch 12 and the metal on the circuit board 20
- the via hole 20c is electrically connected;
- the first feed source 13 is electrically connected to the first antenna branch 10, and the metal via 20c is electrically connected to the first feed 13;
- the first antenna branch 10, the grounding branch 11 and the first feed 13 form a first antenna for generating a frequency of 2.4 GHz to 2.5 GHz;
- the first antenna branch 10 and the second antenna branch 12 and the first feed 13 form a second antenna for generating a frequency of 4.9 GHz to 5.9 GHz.
- the length L of the antenna is the length from the leftmost end of the first antenna branch 10 to the rightmost end of the ground branch 11 , which is 12 mm in total; the antenna width w is 4.5 mm, and thus, the first sub-port is added with respect to the first embodiment. At the same time as the number of branches 10a, the length L of the antenna is lowered.
- the return loss curve obtained by simulating the antenna shows that the return loss at 2.4 GHz is -8.6975 dB (that is, at ml), at 2.5 GHz.
- the return loss is -7.2387dB (ie: m2), and the return loss between 2.4GHz and 2.5GHz is between -7.2387dB and 8.6975dB, which is less than -5dB; at 4.92GHz
- the return loss is -6.9330dB (ie: at m3), the return loss at 5.89GHz is -6.9363dB (ie: at m4), and the return loss between 4.92GHz and 5.89GHz is located.
- the antenna can guarantee the length reduction while covering the two frequency bands of 2.4 GHz to 2.5 GHz and 4.9 GHz to 5.9 GHz.
- the antenna introduced in this embodiment of the present application includes:
- the first antenna branch 10, printed on the front side 20a of the circuit board 20, the first antenna branch 10 may include three first sub-sections 10a;
- the grounding section 11 is printed on the front surface 20a of the circuit board 20, and includes three grounding sub-sections 11a; wherein the length L1 of the leftmost end of the first antenna branch 10 to the rightmost end of the grounding branch 11 is 10 mm;
- the second antenna branch 12, printed on the front surface 20a of the circuit board 20, is a LOOP antenna having a length L2 of about 5 mm, and the second antenna branch 12 is electrically connected to the ground of the PCB board;
- the first antenna 14 is connected to the first antenna segment 10, and the first antenna segment 10, the ground node 11 and the first feed 14 form a first antenna for generating a frequency of 2.4 GHz to 2.5 GHz;
- the second feed 15 is connected to the second antenna branch 12, and the second antenna branch 12 and the second feed 14 form a second antenna for generating a frequency of 4.9 GHz to 5.9 GHz.
- the first capacitor 16 is electrically connected to the end of the first antenna branch 10 and the ground end 20d of the circuit board 20 for reducing the electrical length of the first antenna branch 10;
- the second capacitor 17 is electrically connected to the end of the second antenna branch 12 and the ground end 20d of the circuit board 20 for reducing the electrical length of the second antenna branch 12.
- the length L of the antenna is the length from the leftmost end of the first antenna branch 10 to the rightmost end of the second antenna branch 12, that is, 16 mm.
- the return loss at 4.91GHz is -6.3334dB (ie: ml), at 5.9GHz
- the return loss is -6.3991dB (ie: m2), and the return loss between 4.91GHz and 5.9GHz is between -6.3334dB and 6.3991dB, so the return loss in the 4.9GHz ⁇ 5.9GHz band Also less than -5dB.
- the return loss in the 2.4 GHz to 2.5 GHz and 4.9 GHz to 5.9 GHz frequency bands is satisfactory, and the isolation of each frequency point in the isolation curve 82 is less than -10 dB, so the isolation is good, so the antenna can
- the guaranteed length is reduced to cover the two frequency bands of 2.4 GHz to 2.5 GHz and 4.9 GHz to 5.9 GHz, and the two frequency bands of 2.4 GHz to 2.5 GHz and 4.9 GHz to 5.9 GHz can be separately debugged, so that debugging is more convenient.
- the embodiment of the present invention provides a terminal, where the terminal is, for example, a mobile phone, a wearable device, or the like.
- circuit board 20 disposed on a surface or an interior of the housing 90;
- the first antenna 91 is disposed on the first side 91a of the circuit board 20;
- the processor 92 is electrically connected to the first antenna 91 for processing the transceiving signal of the first antenna 91.
- the first antenna 91 includes:
- the first antenna branch 10 printed on the first side 20a of the circuit board 20, the first antenna branch 10 includes a first sub-segment 10a;
- the grounding branch 11 is printed on the first surface 20a, the grounding branch 11 includes a grounding sub-segment 11a, and the first sub-segment 10a and the grounding sub-segment 11a are staggered to form a gap, and the first antenna branch 10 and the grounding branch 11 are coupled to each other through a slit;
- the second antenna branch 12 is printed on the second surface 20b of the circuit board 20, and the second surface 20b and the first surface 20a are opposite sides of the circuit board 20;
- the second antenna branch 12 is electrically connected to the metal via 20c on the circuit board 20, and the metal via 20c is electrically connected to the first feed 13, the first antenna branch 10,
- the grounding branch 11 and the first feed 13 form a first antenna for generating a first resonant frequency; the first antenna branch 10, the second antenna branch 12 and the first feed 13 form a first Two antennas for generating a second resonant frequency.
- the number of intersections of the first sub-segment 10a is inversely proportional to the length of the antenna.
- the first antenna further includes:
- a first capacitor 16 electrically connecting the end of the first antenna segment 10 and the ground end 20d of the circuit board 20 for reducing the electrical length of the first antenna segment 10;
- the second capacitor 17 is electrically connected to the end of the second antenna branch 12 and the ground end 20d of the circuit board 20 for reducing the electrical length of the second antenna branch 12.
- the antenna further includes:
- the second antenna 93 is disposed on the second side 91b of the circuit board, and the second side 91b is opposite to the first side 91a.
- Figure 10 also includes:
- a third antenna 94a is disposed on the third side 91c of the circuit board 20, the third side 91c is adjacent to the first side 91a, and the third antenna 94a is configured to generate a third resonant frequency;
- the resonant frequency is, for example, at least one of 815 MHz to 960 MHz, 1420 MHz to 1520 MHz, 1710 MHz to 2170 MHz, and 2490 MHz to 2700 MHz;
- the fourth antenna 94b is disposed on the third side 91c, and the fourth antenna 94b is configured to generate a first sub-resonant frequency in the third resonant frequency, where the first sub-resonant frequency is, for example:
- a fifth antenna 94c is disposed on the fourth side 91d of the circuit board 20, the fourth side 91d is opposite to the third side 91c, and the fifth antenna 94c is configured to generate a third resonant frequency, wherein a normal situation
- the fifth antenna 94c is a diversity transmitting and receiving antenna of the third antenna 94a. Therefore, generally, the fifth antenna 94c operates only in the receiving frequency band of the third resonant frequency, for example, 860 MHz to 960 MHz.
- a sixth antenna 94d is disposed on the fourth side 91d, and the sixth antenna 94d is configured to generate a first sub-resonant frequency in the third resonant frequency.
- the second sub-resonant frequency is, for example:
- LTE Long Term Evolution
- WiFi antenna layout scheme the first antenna 91 and the second antenna 93 are arranged on the opposite side of the circuit board to achieve omnidirectional coverage of the WiFi antenna.
- the omnidirectional coverage of the LTE antenna is achieved by the third antenna 94a, the fourth antenna 94b, the fifth antenna 94c, and the sixth antenna 94d.
- the antenna includes:
- a first resonant branch 95a is disposed on the third side 91c, and a first resonant branch 95a is located between the third antenna 94a and the fourth antenna 94b, and the size of the first resonant branch 95a is a quarter wavelength of a sub-resonant frequency;
- a second resonant branch 95a is disposed on the fourth side 91d, a second resonant branch 95a is located between the fifth antenna 94c and the sixth antenna 94d, and the size of the second resonant branch 95a is the first sub One quarter wavelength of the resonant frequency.
- the length of the first resonant branch 95a is a quarter wavelength of 2490MHz ⁇ 2700MHz; if the antenna exists In the case of the second resonance branch 95b, the length of the second resonance branch 95b is about a quarter wavelength of 2490 MHz to 2700 MHz.
- the current distribution of the third antenna 94a and the fourth antenna 94b on the PCB can be changed by the first resonance branch 95a provided on the circuit board 20, thereby improving the isolation between the third antenna 94a and the fourth antenna 94b, and preventing Mutual interference between the third antenna 94a and the fourth antenna 94b; the current distribution of the fifth antenna 94c and the sixth antenna 94d can be changed by the second resonance branch 95b provided on the circuit board 91, thereby improving the fifth antenna 94c and The isolation of the sixth antenna 94d prevents mutual interference between the fifth antenna 94c and the sixth antenna 94d.
- an antenna and a terminal are provided.
- the antenna includes: a first antenna branch, a ground branch and a second antenna branch, a first feed, or a second feed, a first antenna branch,
- the grounding branch and the first feed form a first antenna for generating a first resonant frequency;
- the first antenna branch, the second antenna branch, and the first feed form a second antenna, Generating a second resonant frequency; or, the first antenna branch, the ground branch, and the first feed form a first antenna for generating a first resonant frequency;
- the second antenna branch and the first The two feeds form a second antenna for generating a second resonant frequency.
- the antenna can cover a plurality of frequency bands including the first resonant frequency and the second resonant frequency, and the first sub-section of the first antenna branch and the ground sub-section of the ground branch can be staggered to form a capacitive effect, and the first antenna
- the branch node and the grounding branch form an LC circuit, and the LC circuit exhibits a left-hand transmission line effect, thereby reducing the sum of the lengths of the first antenna branch and the grounding branch, thereby ensuring that while the antenna covers multiple frequency bands, Reduce the overall size of the antenna.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/073408 WO2015135188A1 (zh) | 2014-03-13 | 2014-03-13 | 一种天线及终端 |
JP2016506763A JP6032515B2 (ja) | 2014-03-13 | 2014-03-13 | アンテナ及び端末 |
EP14814657.4A EP3001503B1 (en) | 2014-03-13 | 2014-03-13 | Antenna and terminal |
CN201480077144.5A CN106463827B (zh) | 2014-03-13 | 2014-03-13 | 一种天线及终端 |
US15/034,825 US20160294048A1 (en) | 2014-03-13 | 2014-03-13 | Antenna and Terminal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/073408 WO2015135188A1 (zh) | 2014-03-13 | 2014-03-13 | 一种天线及终端 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015135188A1 true WO2015135188A1 (zh) | 2015-09-17 |
Family
ID=54070817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/073408 WO2015135188A1 (zh) | 2014-03-13 | 2014-03-13 | 一种天线及终端 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160294048A1 (zh) |
EP (1) | EP3001503B1 (zh) |
JP (1) | JP6032515B2 (zh) |
CN (1) | CN106463827B (zh) |
WO (1) | WO2015135188A1 (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108847527A (zh) * | 2018-06-20 | 2018-11-20 | 袁涛 | 基于串联反加载的iot天线 |
CN110783706A (zh) * | 2019-12-06 | 2020-02-11 | 惠州硕贝德无线科技股份有限公司 | 一种同频一体化天线及客户前置设备 |
CN111668587A (zh) * | 2019-03-05 | 2020-09-15 | 日本航空电子工业株式会社 | 天线 |
CN112201951A (zh) * | 2020-09-28 | 2021-01-08 | 上海摩勤智能技术有限公司 | 一种天线支架的多天线布局结构及移动终端 |
CN112751202A (zh) * | 2019-10-29 | 2021-05-04 | 日本航空电子工业株式会社 | 一种天线 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105706303B (zh) | 2014-08-28 | 2019-06-28 | 华为技术有限公司 | 一种天线装置及设备 |
US10333201B2 (en) * | 2016-08-09 | 2019-06-25 | Verily Life Sciences Llc | Multi-antenna wearable device |
CN106602218B (zh) * | 2017-01-24 | 2024-05-10 | 国网冀北电力有限公司电力科学研究院 | 一种抗金属表面的有源射频识别标签天线 |
CN106876904B (zh) * | 2017-04-17 | 2023-03-24 | 金益星 | 一种多功能天线 |
JP6495985B2 (ja) * | 2017-09-05 | 2019-04-03 | 株式会社ヨコオ | 車載用アンテナ装置 |
TWI643400B (zh) | 2017-10-16 | 2018-12-01 | 和碩聯合科技股份有限公司 | 雙頻天線模組 |
EP3761447B1 (en) * | 2018-04-25 | 2022-08-31 | Huawei Technologies Co., Ltd. | Antenna and mobile terminal |
CN112236902A (zh) * | 2018-06-04 | 2021-01-15 | 日本航空电子工业株式会社 | 开口谐振环和基板 |
EP3902063B1 (en) * | 2018-12-27 | 2023-12-20 | Japan Aviation Electronics Industry, Limited | Antenna, substrate, and communication device |
JP7216577B2 (ja) | 2019-03-05 | 2023-02-01 | 日本航空電子工業株式会社 | アンテナ |
JP7196008B2 (ja) | 2019-04-17 | 2022-12-26 | 日本航空電子工業株式会社 | アンテナ |
JP7196007B2 (ja) * | 2019-04-17 | 2022-12-26 | 日本航空電子工業株式会社 | アンテナ |
JP7414415B2 (ja) | 2019-06-27 | 2024-01-16 | 日本航空電子工業株式会社 | アンテナ及びそれに用いられる対向部の中間製品 |
JP7414414B2 (ja) | 2019-06-27 | 2024-01-16 | 日本航空電子工業株式会社 | アンテナ |
JP7475126B2 (ja) | 2019-10-29 | 2024-04-26 | 日本航空電子工業株式会社 | アンテナ |
JP7437143B2 (ja) | 2019-12-05 | 2024-02-22 | 日本航空電子工業株式会社 | アンテナ |
US11881618B2 (en) * | 2020-07-10 | 2024-01-23 | KYOCERA AVX Components (San Diego), Inc. | Antenna system with coupled region |
TWI757091B (zh) * | 2021-02-09 | 2022-03-01 | 緯創資通股份有限公司 | 天線結構 |
TWI783716B (zh) * | 2021-10-07 | 2022-11-11 | 緯創資通股份有限公司 | 天線結構和電子裝置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1874062A (zh) * | 2005-05-30 | 2006-12-06 | 三星电子株式会社 | 内置天线设备 |
CN101207233A (zh) * | 2006-12-22 | 2008-06-25 | 鸿富锦精密工业(深圳)有限公司 | 印刷式天线 |
CN102694246A (zh) * | 2012-02-23 | 2012-09-26 | 香港应用科技研究院有限公司 | 用于双通信***的采用单天线元件的高隔离度天线*** |
CN103296385A (zh) * | 2013-05-29 | 2013-09-11 | 上海安费诺永亿通讯电子有限公司 | 一种可调式多频天线*** |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005062422A1 (en) * | 2003-12-23 | 2005-07-07 | Macquarie University | Multi-band, broadband, fully-planar antennas |
KR100810384B1 (ko) * | 2006-12-05 | 2008-03-04 | 삼성전자주식회사 | 휴대 단말기의 내장형 안테나 장치 |
KR100985476B1 (ko) * | 2008-01-08 | 2010-10-05 | 주식회사 에이스테크놀로지 | 다중 대역 내장형 안테나 |
TWI427858B (zh) * | 2009-04-10 | 2014-02-21 | Advanced Connectek Inc | Digital TV antenna |
WO2012177946A2 (en) * | 2011-06-23 | 2012-12-27 | The Regents Of The University Of California | Electrically small vertical split-ring resonator antennas |
CN103748741B (zh) * | 2011-08-24 | 2016-05-11 | 日本电气株式会社 | 天线和电子装置 |
KR101874892B1 (ko) * | 2012-01-13 | 2018-07-05 | 삼성전자 주식회사 | 소형 안테나 장치 및 그 제어방법 |
TWI505566B (zh) * | 2012-03-22 | 2015-10-21 | Wistron Neweb Corp | 寬頻天線及其相關射頻裝置 |
WO2013183473A1 (ja) * | 2012-06-08 | 2013-12-12 | 株式会社村田製作所 | アンテナおよび無線通信装置 |
KR102017491B1 (ko) * | 2013-08-01 | 2019-09-04 | 삼성전자주식회사 | 안테나 장치 및 그를 구비하는 전자 기기 |
-
2014
- 2014-03-13 WO PCT/CN2014/073408 patent/WO2015135188A1/zh active Application Filing
- 2014-03-13 JP JP2016506763A patent/JP6032515B2/ja not_active Expired - Fee Related
- 2014-03-13 US US15/034,825 patent/US20160294048A1/en not_active Abandoned
- 2014-03-13 CN CN201480077144.5A patent/CN106463827B/zh active Active
- 2014-03-13 EP EP14814657.4A patent/EP3001503B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1874062A (zh) * | 2005-05-30 | 2006-12-06 | 三星电子株式会社 | 内置天线设备 |
CN101207233A (zh) * | 2006-12-22 | 2008-06-25 | 鸿富锦精密工业(深圳)有限公司 | 印刷式天线 |
CN102694246A (zh) * | 2012-02-23 | 2012-09-26 | 香港应用科技研究院有限公司 | 用于双通信***的采用单天线元件的高隔离度天线*** |
CN103296385A (zh) * | 2013-05-29 | 2013-09-11 | 上海安费诺永亿通讯电子有限公司 | 一种可调式多频天线*** |
Non-Patent Citations (1)
Title |
---|
See also references of EP3001503A4 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108847527A (zh) * | 2018-06-20 | 2018-11-20 | 袁涛 | 基于串联反加载的iot天线 |
CN111668587A (zh) * | 2019-03-05 | 2020-09-15 | 日本航空电子工业株式会社 | 天线 |
CN111668587B (zh) * | 2019-03-05 | 2022-01-25 | 日本航空电子工业株式会社 | 天线 |
CN112751202A (zh) * | 2019-10-29 | 2021-05-04 | 日本航空电子工业株式会社 | 一种天线 |
CN112751202B (zh) * | 2019-10-29 | 2024-06-18 | 日本航空电子工业株式会社 | 一种天线 |
CN110783706A (zh) * | 2019-12-06 | 2020-02-11 | 惠州硕贝德无线科技股份有限公司 | 一种同频一体化天线及客户前置设备 |
CN112201951A (zh) * | 2020-09-28 | 2021-01-08 | 上海摩勤智能技术有限公司 | 一种天线支架的多天线布局结构及移动终端 |
CN112201951B (zh) * | 2020-09-28 | 2023-03-10 | 上海摩勤智能技术有限公司 | 一种天线支架的多天线布局结构及移动终端 |
Also Published As
Publication number | Publication date |
---|---|
US20160294048A1 (en) | 2016-10-06 |
CN106463827B (zh) | 2019-11-01 |
JP2016518779A (ja) | 2016-06-23 |
EP3001503B1 (en) | 2017-01-25 |
CN106463827A (zh) | 2017-02-22 |
EP3001503A4 (en) | 2016-03-30 |
JP6032515B2 (ja) | 2016-11-30 |
EP3001503A1 (en) | 2016-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015135188A1 (zh) | 一种天线及终端 | |
US10819031B2 (en) | Printed circuit board antenna and terminal | |
Wong et al. | High‐isolation conjoined loop multi‐input multi‐output antennas for the fifth‐generation tablet device | |
US11038257B2 (en) | Antenna structure and communications terminal | |
US11342651B2 (en) | Antenna apparatus and terminal device | |
CN109659686B (zh) | 一种高隔离度mimo天线 | |
WO2011116575A1 (zh) | 一种无线设备 | |
EP3300170B1 (en) | Antenna and user equipment | |
US10498033B2 (en) | Communications device | |
US8144060B2 (en) | Multiple feedpoint antenna | |
CN109904628B (zh) | 一种智能终端天线阵列 | |
WO2011116707A1 (zh) | 移动通信天线设备及移动通信终端设备 | |
US20170194694A1 (en) | Dual-band wi-fi antenna and mobile terminal | |
CN107851895B (zh) | 终端天线和终端 | |
WO2017117944A1 (zh) | 双频wi-fi天线以及移动终端 | |
TWI521796B (zh) | 提升天線隔離度之射頻裝置及無線通訊裝置 | |
CN216015704U (zh) | 一种用于5g移动通信的紧凑去耦mimo终端天线 | |
CN103915685A (zh) | 一种基于印刷电路板的小尺寸宽带宽的四单元mimo天线 | |
CN103022650B (zh) | 2.4GHz/5.8GHz双频无线通讯装置 | |
WO2022121501A1 (zh) | 一种天线 | |
CN202395148U (zh) | 2.4GHz/5.8GHz双频无线通讯装置 | |
CN114824768A (zh) | 回路天线及tws耳机 | |
CN102931473A (zh) | 2.4GHz/5.8GHz双频无线通讯装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REEP | Request for entry into the european phase |
Ref document number: 2014814657 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014814657 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2016506763 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14814657 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15034825 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |