EP1289053A2 - Platine de circuit et antenne pour montage en surface (SMD) correspondante - Google Patents

Platine de circuit et antenne pour montage en surface (SMD) correspondante Download PDF

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Publication number
EP1289053A2
EP1289053A2 EP02102278A EP02102278A EP1289053A2 EP 1289053 A2 EP1289053 A2 EP 1289053A2 EP 02102278 A EP02102278 A EP 02102278A EP 02102278 A EP02102278 A EP 02102278A EP 1289053 A2 EP1289053 A2 EP 1289053A2
Authority
EP
European Patent Office
Prior art keywords
antenna
conductor
circuit board
conductor track
track structure
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.)
Withdrawn
Application number
EP02102278A
Other languages
German (de)
English (en)
Other versions
EP1289053A3 (fr
Inventor
Achim Hilgers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Philips Corporate Intellectual Property GmbH
Koninklijke Philips Electronics NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Intellectual Property and Standards GmbH, Philips Corporate Intellectual Property GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP1289053A2 publication Critical patent/EP1289053A2/fr
Publication of EP1289053A3 publication Critical patent/EP1289053A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q1/36—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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • 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
    • 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
    • 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 invention relates to a printed circuit board (PCB) for Surface mounting of electrical and / or electronic components, in particular an SMD (surface mounted device) antenna with a ceramic substrate and at least a resonant trace structure.
  • PCB printed circuit board
  • SMD surface mounted device
  • the invention further relates to such an antenna for single and multi-band applications, especially in the high-frequency and microwave range.
  • EP 0 790 662 describes an antenna designed from this point of view with a substrate and an L- or U-shaped radiation electrode and a power supply electrode known.
  • One end of the radiation electrode is at a ground potential short-circuited and at this end by a gap from the power supply electrode spaced.
  • the free end of the radiation electrode is at such a distance from the supply electrode on that both over one formed by the distance
  • Capacitance are electrically coupled through the shape of the radiation electrode as well the type of coupling is to be realized with an antenna with particularly small dimensions can be.
  • a general object on which the invention is based is therefore according to a Possibility to look with a printed circuit board that has the essential electrical and / or electronic components for one of the communication devices mentioned at the beginning carries, can be further reduced.
  • the invention is intended to create a single or multi-band antenna which allows further miniaturization of the printed circuit board.
  • a single or multi-band antenna is to be created, one for an application in one or more of the above-mentioned frequency bands is sufficient Has bandwidth without having to accept much larger dimensions have to.
  • a multi-band antenna should also be created with regard to its resonance frequencies is tunable in a relatively simple manner.
  • the object is achieved according to claim 1 with a printed circuit board Surface mounting of electrical and / or electronic components, in particular an SMD antenna with a ceramic substrate and at least one resonant conductor track structure, which is characterized in that the printed circuit board a die Antenna has essentially enclosing ground metallization and one end of the conductor track structure the antenna is connected to the ground metallization.
  • a first advantage of this solution is that due to the mass metallization surrounding the antenna the other components of the circuit board arranged closer to the antenna and thus reduced the dimensions of the board with the same number of components can be. Those that usually occur due to such mass metallization Adaptation problems are largely avoided by the fact that the conductor track structure not with a feeder for electromagnetic waves to be emitted, but is associated with mass metallization.
  • This connection also has the additional advantage that an antenna with one much wider bandwidth can be realized without a substrate with a lower Dielectric constant must be used.
  • the dimensions of the antenna therefore do not need to be enlarged compared to a relatively narrow-burn antenna become or are smaller than with a conventional antenna with the same wide bandwidth.
  • an SMD antenna with a ceramic Solved substrate with at least one resonant conductor structure which excels by a first lead to connect one end of a first resonant trace structure the antenna with a ground potential and a second feed for coupling an electromagnetic wave to be radiated into the antenna,
  • the first conductor track structure has a plurality of conductor sections, and wherein the length of the conductor track structure dimensioned to excite a desired first resonance frequency (basic mode) is and the course and the distance of the conductor sections is selected so that a first harmonic of the basic mode can be excited.
  • this solution has the further advantage that in a dual-band antenna can be implemented in a relatively simple manner.
  • a three-band antenna can be realized, in particular suitable for use in the integrated communication devices mentioned at the beginning is.
  • the embodiment according to claim 4 has the advantage that the excited antenna resonances are particularly pronounced, while with the embodiment according to claim 5 in particular one electrical adaptation of the antenna can be optimized.
  • the antennas according to the invention essentially have a ceramic substrate made of a cuboid block, the height of which is about a factor of 3 to 10 smaller than its length or width. Proceeding from this, the following description is to be used in the Representation of Figures 1 and 2 each have large upper and lower surface of the substrate 1 as first upper and second lower end faces 10, 11 and the surfaces perpendicular to them (Circumference of the substrate) can be referred to as first to fourth side surfaces 12 to 15.
  • the substrates have a dielectric constant of ⁇ r > 1 and / or a permeability number of ⁇ r > 1.
  • Typical materials are high frequency substrates with low losses and little temperature dependence of the high frequency properties (NP0 or so-called SL materials). It is also possible to use substrates whose dielectric number and / or permeability number is set as desired by embedding a ceramic powder in a polymer matrix.
  • the conductor track structures of the antennas are essentially made of highly electrically conductive Materials such as silver, copper, gold, aluminum or a superconductor are made.
  • the antennas according to the invention are of the basic type known as "printed wire antennas", in which one or more resonant conductor track structures are applied to a substrate
  • these antennas are wire antennas that are used in In contrast to microstrip antennas, no metallic ones forming a reference potential Have area on one side of the substrate.
  • the antenna according to FIG. 1 comprises a cuboid substrate 1, on the substrate second side surface 13 there is a first feed 16 and on its first side surface 12 itself a second feed 17 is in the form of a metallization.
  • the feeders extend in each case a piece for contacting a circuit board 4 the lower end face 11.
  • Conductor structure 20 which begins at the first feed 16 with a first end and has a second open end on the substrate.
  • the conductor track structure 20 settles composed of a plurality of individual conductor sections, each different May have widths.
  • a second section 22 which extends in the horizontal direction along the fourth side surface 15 to a vertically upwardly extending third section 23 extends.
  • the third section 23 sits on the upper (first) end face 10 of the Substrate as the fourth section 24, which extends along the edge to the fourth side surface 15 extends to the third side surface 14 and merges into a fifth section 25 there runs on the first end face 10 along the edge to the third side face 14 and has a length which corresponds to approximately half the length of the third side surface 14.
  • the antenna is mounted on a circuit board 4 by surface mounting (SMD technology) (partially shown) soldered.
  • the first feed 16 is the substrate 1 largely surrounding ground metallization 41 of the circuit board 4, while the second feed 17 on a conductor track 42 for feeding a to be blasted electromagnetic wave is soldered.
  • the frequency of the basic mode can vary over the total length of the printed conductor structure 20 varies and adjusted in the desired manner, this also in built-in State of the antenna is still possible by the length of the conductor track structure Example with a laser beam is shortened accordingly.
  • the electromagnetic wave is fed in capacitively via the second feed 17 Way through stray fields, the distance between the second feed 17 of of the conductor track structure 20, the coupling strength to the antenna resonance is specifically set can be. This is also still possible when installed if the length the second feed 17 on the first side surface 12, for example with a laser beam is shortened accordingly.
  • connection enables the conductor track structure to the first Feeder 16 that the antenna on a printed circuit board 4 almost immediately can be surrounded with the mass metallization 41, without thereby as with the known antennas of this type, adaptation problems occur.
  • mass metallization 41 a certain shielding effect
  • the circuit board 4 is not shown in this figure.
  • the antenna can be in the same Soldered on such a board and surrounded with a mass metallization 41 as described in connection with Figure 1. Result in this regard This antenna also has the same advantages as in the ice-cream embodiment.
  • the substrate can additionally be fixed on a circuit board
  • the antenna has a first feed 16 to be connected to a ground metallization the second side surface 13 in the region of the edge with the third side surface 14 and one second, to be connected to a feed line for electromagnetic waves to be emitted Feeder 17 on the first side surface 12 in the region of the edge with the second side surface 13 on.
  • the leads (metallizations) extend for contacting a circuit board in turn also in each case a piece on the lower end face 11.
  • a first conductor track structure 20 extends from the first feed line 16, which has a first End at the first feeder 16 begins and a second open end on the substrate having.
  • a second conductor structure 30 begins with a first end at the second Feed 17 and has a second open end on the substrate.
  • the individual sections the first and second conductor structure 20, 30 can in turn be different Have widths.
  • the first conductor track structure 20 begins at the first feed 16 with a first section 21, which is on the lower end face 11 of the substrate 1 along the edge to the third Side surface 14 extends to fourth side surface 15 and there as second section 22 runs up to the edge with the upper end face 10.
  • the first trace structure 20 sits on the fourth side surface 15 with a third section 23 along the edge to the upper end face 10 to the first side face 12.
  • the first Conductor structure 20 finally ends with a fifth section 25, which is on the upper end face 10 connects to the fourth section 24 substantially at right angles and has a first and a second stub 25a, 25b.
  • the second conductor track structure 30 begins at the second feed 17 with a first one Section 31, which is on the second side surface 13 on the edge to the lower end face 11 extends up to about a third of the length of the second side surface 13. (This section 31 could also on the lower end face 13 on the edge to the second side face 13 lie). This is followed by a second section 32, which is perpendicular thereto runs up to the upper end face 10 and into a third section 33 on the upper end surface 10 passes perpendicular to the second side surface 13.
  • the second trace structure 30 ends with a fourth section 34 that is parallel to the second side surface 13 on the upper end face 10 extends back to the edge with the first side face 12.
  • the antenna resonances are thus a combination of capacitive and resonant Coupling excited about the second feed 17.
  • FIG three resonance frequencies can be seen at around 900, 1850 and 2100 MHz.
  • the position of the first, in this case lower resonance frequency becomes essentially by the length of the first conductor track structure 20 starting from the first feed 16 determined and is given by their basic fashion, while the location of the second, in this Case mean resonance frequency essentially by the length of that of the second Feed 17 outgoing second conductor structure 30 is defined.
  • Case upper resonance frequency will finally the first harmonic of the first conductor track structure 20, its position (Frequency position) by changing the coupling between the third and fifth Section 23, 25 of the first interconnect structure 20 and thus through the length of the first tuning stub 25a is tuned to a desired value.
  • the length of the tuning stubs 25a, 25b, as well as the length of the first and second conductor structure 20, 30, in the installed state of the antenna, for example with a laser beam can be shortened so that an adaptation to a specific installation and Operating situation is possible.
  • a dual band antenna for example in the lower and upper Cellular band (GSM900 and DCS1800 or PCS1900) should be operated, this can be realized by omitting the second conductor track structure 30, the coupling of the electromagnetic waves to be emitted in turn via the second feed 17 he follows.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Structure Of Printed Boards (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Support Of Aerials (AREA)
EP02102278A 2001-09-04 2002-09-03 Platine de circuit et antenne pour montage en surface (SMD) correspondante Withdrawn EP1289053A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10143168A DE10143168A1 (de) 2001-09-04 2001-09-04 Schaltungsplatine und SMD-Antenne hierfür
DE10143168 2001-09-04

Publications (2)

Publication Number Publication Date
EP1289053A2 true EP1289053A2 (fr) 2003-03-05
EP1289053A3 EP1289053A3 (fr) 2004-02-04

Family

ID=7697575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102278A Withdrawn EP1289053A3 (fr) 2001-09-04 2002-09-03 Platine de circuit et antenne pour montage en surface (SMD) correspondante

Country Status (6)

Country Link
US (2) US6683576B2 (fr)
EP (1) EP1289053A3 (fr)
JP (1) JP2003163528A (fr)
KR (1) KR20030020841A (fr)
CN (1) CN1417888A (fr)
DE (1) DE10143168A1 (fr)

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US7463196B2 (en) 2004-02-18 2008-12-09 Nxp B.V. Antenna
US7830330B2 (en) 2004-03-25 2010-11-09 Nxp B.V. Antenna configuration
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Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 25, 12. April 2001 (2001-04-12) & JP 2001 217631 A (MURATA MFG CO LTD), 10. August 2001 (2001-08-10) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7463196B2 (en) 2004-02-18 2008-12-09 Nxp B.V. Antenna
US7830330B2 (en) 2004-03-25 2010-11-09 Nxp B.V. Antenna configuration
CN101471484B (zh) * 2007-12-27 2012-07-18 耀登科技股份有限公司 一种多频天线

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US20030043081A1 (en) 2003-03-06
JP2003163528A (ja) 2003-06-06
DE10143168A1 (de) 2003-03-20
CN1417888A (zh) 2003-05-14
US20040113846A1 (en) 2004-06-17
US6958731B2 (en) 2005-10-25
US6683576B2 (en) 2004-01-27
EP1289053A3 (fr) 2004-02-04
KR20030020841A (ko) 2003-03-10

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