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EP2367233A1 - Système d'antenes planaires - Google Patents

Système d'antenes planaires Download PDF

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Publication number
EP2367233A1
EP2367233A1 EP10002812A EP10002812A EP2367233A1 EP 2367233 A1 EP2367233 A1 EP 2367233A1 EP 10002812 A EP10002812 A EP 10002812A EP 10002812 A EP10002812 A EP 10002812A EP 2367233 A1 EP2367233 A1 EP 2367233A1
Authority
EP
European Patent Office
Prior art keywords
antenna system
planar antenna
base
radiator
short
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Withdrawn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
EP10002812A
Other languages
German (de)
English (en)
Inventor
Gerhard RÖTTER
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP10002812A priority Critical patent/EP2367233A1/fr
Priority to CN2011100644255A priority patent/CN102195142A/zh
Publication of EP2367233A1 publication Critical patent/EP2367233A1/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Withdrawn legal-status Critical Current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
    • H01Q1/36—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
    • H01Q1/24—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
    • 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
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Definitions

  • the invention relates to a planar antenna system having a base area formed by a conductive layer of a printed circuit board according to the preamble of patent claim 1.
  • Both in the industrial sector and in the consumer sector devices are often provided for the purpose of voice and data communication with transmitting and receiving devices that work in the UHF range.
  • Examples of such devices are mobile phones, in particular GSM mobile phones, but also industrial automation components, in particular RFID readers and sensors connected by radio.
  • the antennas of the transmitting and receiving devices in industrial applications require the smallest possible "form factor", that is, that they should be constructed as small as possible and in particular as flat as possible.
  • the structure should be made mechanically robust. Another important requirement is the ability to function on both non-conductive and metallic mounting surfaces. Another important aspect is the bandwidth, whereby, depending on the radio standard (GSM, WLAN, etc.), wide frequency ranges must be covered.
  • PIFA antennas planar inverted F antenna
  • PIFA planar inverted F antenna
  • planar antennas in particular the PIFA antenna
  • cover a comparatively small frequency range is often circumvented in the prior art in that a plurality of antennas, a so-called antenna array, is set up, in which the extension the frequency range is made by the coupling of two nearly identical individual systems.
  • the coupling factor and the resonance frequencies of the individual systems thereby determine the behavior of the overall system.
  • some disadvantages occur; Among other things, the electrical coupling of a second antenna system is not trivial.
  • the second antenna element in contrast to the first antenna element is not fed directly, but at this radiation coupled.
  • the bandwidth can be further increased, with pronounced maxima and minima are avoided or reduced.
  • a planar antenna system with a base area formed by a first conductive layer of a printed circuit board, with a first radiator surface arranged parallel to the base surface, which is conductively connected to the base area by means of a short circuit connection and which feeds a feed point Connection of a high-frequency circuit has.
  • a second radiator surface coupled with this radiation-coupled second radiator surface is arranged in parallel over the base surface of the first radiator surface, wherein one side of the second radiator surface is connected by means of a second short-circuit connection with the base surface.
  • a flat-building, compact antenna system which in comparison to the known antennas and antenna systems has a high bandwidth and which by the two radiator surfaces common base operation on both metallic / conductive and on non-metallic / non-conductive substrates (mounting surfaces ) without significant change in high frequency characteristics.
  • the antenna system on the one hand to produce a cost-effective and on the other hand easy to integrate in a high-frequency circuit or to combine with such by the structure as part of a circuit board.
  • the radiation power of the antenna is further improved when the first and second short-circuit connections are arranged substantially on the same line.
  • the base area is formed by a first layer of the printed circuit board and the emitter areas are formed by a further, second layer of the same printed circuit board, a series of plated-through holes represents a particularly effective and inexpensive type of short-circuit connection.
  • the radiator surfaces can also be formed by separately applied sheets (shaped sheets), so that the thickness of the printed circuit board does not have to be adapted to the required distance between the base surface and the radiator surfaces.
  • shaped sheets By choosing a thin printed circuit board (substrate) or a foil printed circuit board then results in a construction in which the area between the base and the radiator surfaces consists to a large extent of an air layer, whereby the losses caused by the carrier material, be further reduced.
  • carrier material can be completely dispensed with in the area of the radiator surfaces.
  • a particularly advantageous variant is the mounting of the carrier plates on the side of the base of the circuit board.
  • the high-frequency characteristics also arise in the antenna system according to the invention primarily from the geometric dimensions of the radiator surfaces and the distance between the radiator surfaces and the base surface.
  • the antenna system can be tuned without changing the radiators, ie the geometries, to have to make.
  • both the first, directly fed emitter surface and the radiation-coupled second emitter surface are each provided with an impedance element.
  • the second radiator surface results in a particularly broadband usability of the antenna system; in cases where a narrow band application is given, the second radiator surface may also be rectangular, which is a special form of the trapezoid.
  • FIG. 1 For example, in one embodiment of the antenna system, a printed circuit board of a radio sensor in an industrial automation arrangement is shown.
  • the FIG. 1 shows the area (detail) of the circuit board, which includes the antenna system.
  • the sensor ie the device which comprises the printed circuit board with the antenna system, is in the present embodiment for application (eg gluing) on a machine housing or the like. furnished, referring to the representation in the FIG. 1 the mounting surface (not shown) is disposed below the circuit board.
  • the lowest conductive layer forms the base area GP ("Ground Plain ”) of the antenna system, that is to say a ground plane, is arranged above the base area GP, the substrate STR, that is to say the carrier material of the printed circuit board,
  • the printed circuit boards used in real sensors can have a multiplicity of layers FIG. 1 For simplicity, only two layers are shown.
  • an upper layer of the printed circuit board which is arranged on the side of the substrate STR opposite the base GP, is etched free, with the exception of the radiator surfaces S1, S2, so that the radiator surfaces S1, S2 remain as conductive regions arranged parallel to the base surface GP , While the emitter surface S1 is made rectangular, the emitter surface S2 has a trapezoidal blank, which is created by eliminating a triangular surface on one side of the emitter surface S2 opposite the emitter surface S1, thus resulting in a trapezoidal taper V of the emitter surface S2.
  • the radiator surfaces S1, S2 are electrically connected to their bases with respect to the drawing with the base GP. As shown, this can be realized by strips of conductive material (eg copper sheet) vertically embedded in the printed circuit board, the short-circuit connections KS1, KS2, which are conductively connected to the base area GP and the radiator surfaces S1, S2 by soldering or another connection technique are. In an alternative embodiment, not shown here, the electrically conductive connections can also be realized by a number of plated-through holes in each case.
  • conductive material eg copper sheet
  • the emitter surface S1 is provided with a feeding point SP, which, for example by means of a coaxial conductor, is connected to a high frequency circuit (transmitter, receiver), not shown here.
  • the emitter surface S2 has no such feed point because the emitter surface S2 is radiation-coupled to the emitter surface S1.
  • the radiator surface S1 is coupled to the base area GP with an impedance element Z1, wherein the impedance element Z1 can consist of the known passive components (L, C, R).
  • the impedance element Z1 is used in addition to the appropriate choice of the geometries of the antenna surfaces (radiator surface S1, S2, distance of the radiator surfaces S1, S2 to the base GP) for tuning the antenna system.
  • a second impedance element Z2 is arranged electrically between the radiating surface S2 and the base GP.
  • the connection points of the impedance elements Z1, Z2 are preferably coupled to one of the short-circuit connections KS1, KS2 respectively remote end of the radiator surfaces S1, S2.
  • the geometry of the taper V, ie in particular the basic angle of the triangular recess of the radiator surface S2, has a direct influence on the bandwidth of the planar antenna system, ie on the usable frequency range.
  • the substrate STR can be recessed below the radiator surfaces S1, S2, the recess advantageously being at least as large as the surface of the radiating surfaces S1, S2. In fabrication, this can be easily realized if the circuit board is made by laminating the substrate STR and the layers, the recess (s) being made in the substrate STR before lamination with the conductive layers or be.
  • FIG. 2 is an alternative embodiment of the in the FIG. 1 shown already shown planar antenna system.
  • the emitter surface S2 made rectangular, thus has no taper V on.
  • This special case is preferred for those applications which, compared to the antenna system of the FIG. 1 narrowband work.
  • a rectangular or a trapezoidal section of the radiating surface S2 can be selected. It should be further pointed out that in the case of a rectangular radiator surface S2 already by a different width of the radiator surfaces S1 and S2 due to the resulting different resonant frequencies of the frequency range compared to an antenna system with only one radiator surface is wider.
  • the base GP is not arranged below the substrate STR with reference to the drawing, but represents the top surface of the printed circuit board.
  • the emitter surfaces S1, S2 are designed as sheets which are bent at right angles at their left edge, whereby the short-circuit connections KS1, KS2 are formed directly on the radiator surfaces S1, S2. These short-circuit connections KS1, KS2 are soldered to the base area GP or connected in a different way.
  • the impedance elements Z1, Z2 can be used for mechanical support of the antenna sheets in their relative to the FIG. 2 used in right-hand areas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)
EP10002812A 2010-03-17 2010-03-17 Système d'antenes planaires Withdrawn EP2367233A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10002812A EP2367233A1 (fr) 2010-03-17 2010-03-17 Système d'antenes planaires
CN2011100644255A CN102195142A (zh) 2010-03-17 2011-03-17 平面天线系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10002812A EP2367233A1 (fr) 2010-03-17 2010-03-17 Système d'antenes planaires

Publications (1)

Publication Number Publication Date
EP2367233A1 true EP2367233A1 (fr) 2011-09-21

Family

ID=42102135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10002812A Withdrawn EP2367233A1 (fr) 2010-03-17 2010-03-17 Système d'antenes planaires

Country Status (2)

Country Link
EP (1) EP2367233A1 (fr)
CN (1) CN102195142A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016178496A (ja) * 2015-03-20 2016-10-06 三菱マテリアル株式会社 アンテナ装置及びこれを備えた通信機器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103390796B (zh) * 2013-07-29 2016-03-09 上海安费诺永亿通讯电子有限公司 一种手机终端天线
CN104078764B (zh) * 2014-05-22 2017-04-05 华南理工大学 一种应用于体域网的超宽带低频段变形pifa
CN105703075A (zh) * 2014-11-24 2016-06-22 国基电子（上海）有限公司 近场通信天线
DE102016206342A1 (de) * 2016-04-15 2017-10-19 BSH Hausgeräte GmbH Gargerät mit einer Flächenantenne und Verfahren zum Betreiben eines Gargeräts
CN113659344A (zh) * 2021-07-13 2021-11-16 荣耀终端有限公司 一种基于寄生耦合的贴片天线和电子设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001028035A1 (fr) * 1999-10-12 2001-04-19 Arc Wireless Solutions, Inc. Antenne microruban a bande etroite duale compacte
WO2002019464A2 (fr) * 2000-08-30 2002-03-07 Koninklijke Philips Electronics N.V. Dispositif d'antenne
WO2002054534A1 (fr) * 2000-12-29 2002-07-11 Allgon Mobile Communications Ab Ensemble antenne
WO2002075851A1 (fr) * 2001-03-20 2002-09-26 Koninklijke Philips Electronics N.V. Antenne comportant un substrat et une structure de pistes conductrices
EP1507313A2 (fr) * 2003-08-14 2005-02-16 Nec Corporation Dispositif d'antenne pour terminal portable
WO2005081361A1 (fr) * 2004-02-24 2005-09-01 Sony Ericsson Mobile Communications Ab Antenne de television pour dispositif de communication portable
US20070115177A1 (en) * 2003-12-02 2007-05-24 Kazunari Kawahata Antenna structure and communication apparatus including the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1177504C (zh) * 2001-09-11 2004-11-24 正文科技股份有限公司 改进的平面倒f天线装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001028035A1 (fr) * 1999-10-12 2001-04-19 Arc Wireless Solutions, Inc. Antenne microruban a bande etroite duale compacte
WO2002019464A2 (fr) * 2000-08-30 2002-03-07 Koninklijke Philips Electronics N.V. Dispositif d'antenne
WO2002054534A1 (fr) * 2000-12-29 2002-07-11 Allgon Mobile Communications Ab Ensemble antenne
WO2002075851A1 (fr) * 2001-03-20 2002-09-26 Koninklijke Philips Electronics N.V. Antenne comportant un substrat et une structure de pistes conductrices
EP1507313A2 (fr) * 2003-08-14 2005-02-16 Nec Corporation Dispositif d'antenne pour terminal portable
US20070115177A1 (en) * 2003-12-02 2007-05-24 Kazunari Kawahata Antenna structure and communication apparatus including the same
WO2005081361A1 (fr) * 2004-02-24 2005-09-01 Sony Ericsson Mobile Communications Ab Antenne de television pour dispositif de communication portable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016178496A (ja) * 2015-03-20 2016-10-06 三菱マテリアル株式会社 アンテナ装置及びこれを備えた通信機器

Also Published As

Publication number Publication date
CN102195142A (zh) 2011-09-21

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