EP1376758B1 - Kompakte Streifenleiterantenne mit einer Anpassungsanordnung - Google Patents

Kompakte Streifenleiterantenne mit einer Anpassungsanordnung Download PDF

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Publication number
EP1376758B1
EP1376758B1 EP20030291382 EP03291382A EP1376758B1 EP 1376758 B1 EP1376758 B1 EP 1376758B1 EP 20030291382 EP20030291382 EP 20030291382 EP 03291382 A EP03291382 A EP 03291382A EP 1376758 B1 EP1376758 B1 EP 1376758B1
Authority
EP
European Patent Office
Prior art keywords
substrate
recess
radiating element
conductor
antenna
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.)
Expired - Fee Related
Application number
EP20030291382
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English (en)
French (fr)
Other versions
EP1376758A1 (de
Inventor
Jean-Philippe Coupez
Christian Person
Yann Toutain
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.)
Orange SA
Original Assignee
France Telecom SA
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 France Telecom SA filed Critical France Telecom SA
Publication of EP1376758A1 publication Critical patent/EP1376758A1/de
Application granted granted Critical
Publication of EP1376758B1 publication Critical patent/EP1376758B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
    • 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
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • 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
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Definitions

  • the present invention relates to an antenna in the form of "pastille" in plated technology, linear or circular polarization, to work in a wide frequency range extending at least up to a few gigahertz.
  • the antenna is intended to be installed in cellular network basis for radiocommunications with terminals mobile radiotelephones to cover bands frequency of several networks.
  • the antenna must cover a very wide band of frequency of operation in order to satisfy a increasing demand for bandwidth radio networks with terminals mobile.
  • the antenna must also be technically simple, reliable and economical to allow a significant and viable development of interfaces radiocommunication in cellular networks.
  • Planar "pellet” antennas constitute one of the most used solutions in the integration of current radio systems.
  • the choice of the material of the dielectric substrate on which the radiating element of the antenna is integrated is essential.
  • the substrate must, in particular, have a high thickness, a very low relative permittivity and a level of dielectric losses as small as possible.
  • the dielectric substrate is machined in a foam block and an adaptation means is attached to a small square dielectric support embedded in a central cavity of one side of the substrate.
  • the adaptation means may have distributed elements such as ⁇ / 4 transformers, stubs, or coupled-line structures as in a hybrid coupler at 3 dB-90 ° or a filter for example.
  • the elements of the adaptation means are integrated on the small dielectric support so that it has a small thickness and a permittivity relatively higher than that of the substrate of the antenna.
  • European Patent Application EP 1 130 676 proposes according to a first realization of the document, a radiating element antenna of the pastille type comprising an impedance transformer taken sandwich between two layers of substrate whose outer faces support the element respectively radiating and a ground plate.
  • the transformer impedance according to a second embodiment of the aforementioned application is sandwiched between two layers of the three-layer substrate.
  • the impedance transformer includes two elements of pattern drivers that are on the underside of a substrate layer 108 and the upper face of the underlying substrate layer and which are in electrical contact by superposition.
  • the impedance transformer drowned between two Substrate layers according to EP 1 130 676 present the following disadvantages and limitations.
  • the use of several substrates leads to problems of realization of the multi-layer structure final stage, such as alignment and maintenance of substrate layers and contact therebetween.
  • the inhomogeneous nature of the dielectric medium thus obtained does not correspond to conditions optimal for the integration of a planar antenna.
  • Conducting pattern elements on several separate substrates causes discontinuities electric and electrical contact quality between these different elements.
  • the present invention aims to provide a printed antenna type "lozenge” that remedies disadvantages of the combination of the means of adaptation and the radiating element in the aforementioned antennas according to the prior art, and particularly the disadvantages of interconnection between the means of adaptation and the radiating element and between different conductive elements means while reducing the cost of manufacture of the antenna.
  • a printed antenna includes a dielectric substrate having first and second faces and a recess in the first face, a conductive plate of mass arranged against the first substrate face and covering the recess, a radiating element of the pastille type on the second substrate face, and matching means for connecting the radiating element to an inner conductor of a excitation means having an external conductor fixed against the ground plate.
  • the antenna is characterized, according to the invention, in that the means adaptation is at least partially supported by a wall of the recess of the substrate.
  • the adaptation means is pre-integrated, like the radiating element of the antenna, on the dielectric substrate.
  • the substrate with the recess is shaped by molding or machining in a single block of foam dielectric, thus forming a single layer of machined three-dimensional substrate that supports everything the means of adaptation.
  • the characteristics of the antenna according to the invention make it possible to satisfy criteria such as high bandwidth, which result in an increase substantial transmission capacity offered by the single radiating element while proposing a simple technological solution for a realization collective antenna complete on one and the same dielectric foam support.
  • the characteristics of the substrate dielectric are adaptable both at the level of the antenna with regard to the thick of the latter only at the level of the average adaptation with regard to a weak thickness between the adaptation means and the plate of mass thanks to the arrangement of the recess whose height is chosen directly by machining or molding of the foam substrate. Geometry and position of the means of adaptation are thus perfectly controlled thanks to the form of the recess made within the single block of dielectric foam.
  • the means of adaptation is no longer reported on the dielectric substrate supporting the radiating element but is obtained by simple machining or molding to three dimensions in the dielectric substrate and by local metal deposits to achieve the pattern constituting the adaptation element. This achievement of the adaptation means and the radiating element on a common foam dielectric block leads to a manufacturing process simple to implement and economic.
  • the means adapter comprises a conductive strip on the bottom of the recess substantially parallel to the ground plate and having a first end connected to the internal conductor of the excitation means and a second end connected to the radiating element by a conductive interconnection link in the substrate.
  • the medium adapter comprises a conductive strip which is substantially perpendicular to a first portion of the radiating element and supported by a wall of the recess and which is connected to the internal conductor of the excitation means, and a conductive pad which is substantially parallel to a second portion of the radiating element and supported by a wall of the recess and which is connected to the conductive strip.
  • the conductive pad thus performs a coupling capacitive to excite the radiating element.
  • Half-wave printed antenna linearly polarized 1 according to the first embodiment of the invention, as shown in the figures 1 and 2, comprises a dielectric substrate 2 in form pavement, an electrically conductive plate 3 disposed against a first face of the substrate and constituting a ground plane, and a layer electrically conductive rectangular 4 extending in the center of the second face of the substrate and constituting a printed radiating element of the type pellet.
  • the radiating element 4 has an outline Rectangular sides L and W, but can have a square outline, circular or elliptical for example.
  • the antenna 1 thus has a symmetrical structure ratio to two planes of symmetry symmetry XX and YY perpendicular to each other and perpendicular to faces of the substrate 2.
  • the recess is a cavity whose depth p is small compared to the thickness e of the substrate 2.
  • the cavity is substantially rectangular and is symmetrical with respect to XX and YY planes.
  • the form of the substrate and the recess in it can be obtained by machining in a single block of foam, or directly by foam molding.
  • the adaptation means comprises a band conductive 6 printed on the bottom 51 of the recess 5 following the plane of symmetry XX, the bottom 51 of the recess being substantially parallel to the plate 3.
  • a first end 61 of the strip adaptive conductor 6 is connected to the conductor internal circuit 71 of a coaxial excitation probe of the antenna that passes through without contact a hole in the ground plate 3.
  • the outer conductor 72 of the probe is fixed against one side of the ground plate 3 opposite to the substrate 2.
  • a second end 62 of the conductive matching strip 6 is connected to the radiating element 4 by an interconnection link conductor in the form of a metallized crossing 63 extending into the substrate between the bottom 51 of the recess 5 and the radiating element 4 on the second face of the substrate. Electrical continuity is thus ensured between the internal driver 71 of the excitation probe and the radiating element 4 to through the adapter element 6 and the passage 63, and the antenna thus works in polarization linear.
  • the performance of the antenna 1 of the invention are optimized thanks to the choice of a thickness of the dielectric foam substrate 2 and than the electrical characteristics of the band of adaptation 6 whose distance from the plane of mass 3 is easily selectable according to the depth p of the internal recess 5 during the manufacture of the antenna.
  • the dielectric substrate 3 is made from a single "layer" of foam and machined or preformed in three dimensions in it ; it thus supports the radiating element 4 in pastille and the means of adaptation in the form of the conductive strip 6 is printed directly on the substrate by photoengraving or metallized paint example.
  • the realization of the antenna is found thus greatly simplified while allowing the control of spacings and positioning between the different conductive elements of the antenna.
  • the antenna 1 according to the first embodiment illustrated in FIGS. 1 and 2 is an antenna "pastille" flat, very wide bandwidth.
  • the pre-integrated passive elements 6 and 63 have both a role of compensation of the electrical effect due to the connection through the metallized crossing 63 and a role broadband impedance matching at the level of the conductive strip 6.
  • elements series such as microstrip line sections distributed in series, or parallel elements such that stubs 64, complete the passive circuit of the means of adaptation in order to adapt the antenna to the characteristic impedance of the excitation probe.
  • the means of adaptation may also include a microwave filter, or a hybrid coupler having vertices connected to two metallized vias 63 for an operation of the antenna with a polarization circular.
  • the faces of the substrate 2 are substantially rectangular and the second face of the substrate is completely covered by the rectangular radiating element 4.
  • the thickness e, the width W, and the length L of the substrate 2 are respectively 20 mm, 48 mm and 50 mm. mm.
  • the adaptation means is composed of a conductive strip 6 having a length of 35 mm and a width of 2 mm and a conductive stub 64 perpendicular to the conductive strip and having a length of 10 mm and a width of 2 mm, the strip and the stub being etched on the bottom 51 of the recess 5.
  • the characteristic impedance of the microstrip lines thus formed in the recess 5, bathed in an almost homogeneous equivalent air / foam medium is 125 ⁇ .
  • This relatively high characteristic impedance value is particularly suitable for impedance levels that are presented at the connection point 65 between the metallized bushing 63 and the radiator 4 and which are high relative to the characteristic prior characteristic impedance.
  • 50 ⁇ at the excitation probe 71-72 indeed, the antenna 1 being of the "pellet" type on a substrate 2 of high thickness and very low relative permittivity, this embodiment favors the high impedance character of the antenna.
  • the structure of the antenna according to the invention confers a freedom parameter, the depth p of the recess 5 in the foam substrate 2, which makes it possible to choose the electrical characteristics of the antenna adaptation means and thus to control the spacing between the metal matching patterns 6, 64 and the ground plate 3.
  • the connection with the radiating element 2 of the antenna produced by the metallized bushing 63 is also high impedance.
  • This bandwidth is representative of a very wide-scale operation bandaged.
  • the transmission response T also shown in Figure 3 is reflected in the diagram of radiation of the antenna by effective radiation in this frequency band at least in the main radiation direction of the antenna corresponding to the line of intersection of the plans perpendiculars XX and YY.
  • the first variant shown in Figure 4 differs from the embodiment shown in Figure 2 by a metallized vias 63a in the substrate dielectric 2, as an interconnection link between the inner conductor 71 of the probe of coaxial excitation and the radiating element 4, which extends in the extension of the inner driver 71 of the excitation probe.
  • the metallic crossing 63a can be replaced by the inner conductor 71 of the probe which is much longer than the one shown in Figure 2, an additional length substantially equal to e - p.
  • the internal conductor also passes through a drilled hole in the substrate between the recess bottom 51 and the radiating element 4 and has a free end welded to the radiating element 4 and an intermediate section at the bottom 51 of the recess 5 welded to the conductive adapter tape 6.
  • the welds are made by a conductive adhesive for example.
  • the inner conducting element of probe 71 is thus common to the radiating element "pellet" 4 and to the adapter tape 6.
  • the excitation probe 71-72 is fixed under the center of the ground plate 3.
  • the adaptation band conductor 6b extends firstly on the bottom 51 of the recess 5 from the first end 61b substantially central recess bottom 51 and welded to the end of the inner conductor 71 of the probe, substantially in the plane of symmetry XX of the radiating element 4, to the second end 62b constituted by a metallized crossing in the substrate 2 between the recess bottom 51 and a field lateral 21 of the substrate.
  • the interconnection link comprises a conductive strip 63b printed on the substrate field 21 and extending perpendicular to the radiating element between the metallic crossing 62b and one side of the element radiating 4.
  • the third variant shown in FIG. 6 relates to a printed antenna whose substrate 2c has at least one projection 8 extending longitudinally to the plane of symmetry YY and covered by the radiating element 4c, in accordance with the printed antenna structure described in FIG. French patent application cited above FR 2818811, filed December 26, 2000.
  • the metallized layer constituting the radiating element 4c covers the top and the longitudinal sides 81 of the projection 8 and has a U-shaped section with potent ends, with flanges 41 extending on the second face of the substrate 2 and having a width L1 different from the width L2 of the projection 8.
  • the height h of the projection 8 may be equal to or greater than the thickness e of the substrate 2 in general.
  • the length of the radiating element 4b is significantly reduced. This reduction in length brings the radiating slots closer to the end of the symmetrical wings 41 of the element radiating, which opens the radiation pattern of the antenna in the electric field plane perpendicular to the projection 8.
  • the thickening important at the center of the substrate 2c formed by the projection 8 covered with the elongated radiating element electrically the resonant dimension of the antenna and so increases the characteristic impedance at center of the antenna which is equivalent to a pseudo short circuit.
  • the jump is reduced so significant the size of the antenna for a given operating frequency. More impedance the center of the antenna is high, the higher the L2 width of the projection must be reduced for a given frequency under the condition of resonance.
  • the adaptation means shown in FIG. 6 has a printed conductive strip 6 on the bottom 51 of the recess 5 and a metallic passage 63c in a manner similar to the first embodiment shown in Figure 2.
  • Recess 5 is underlying at jump 8 and has a depth p smaller than the thickness e of the substrate taken away from the projection.
  • the adaptation means for any antenna 8 can be structured according to FIG. 5, or according to FIG. 8 or 10, as will be seen below.
  • the pellet jumping antenna shown in FIGS. 7 and 8 includes a means of adaptation to inductive elements and capacitive supported by two walls of the recess 5d.
  • the recess 5d has a much greater depth pd large than the peripheral thickness e of the substrate to away from the jump and is partly located in the thickness h of the projection 8d, and in half of the L2 width of the projection.
  • the means of adaptation includes two elements 61d and 62d.
  • the first element 61d is a conductive strip extending the driver internal 71 of the excitation probe substantially perpendicular to a central portion of the element radiating and supported by a wall of the recess 5d located substantially in the plane of symmetry YY.
  • Band 61d is an adaptation element inductive.
  • the second element 62d is a beach conductive rectangular connected to one end of the conductive strip 61d and supported by a part of the bottom 51d of the recess 5d, substantially parallel at the upper face of the radiating element 4d on the jump.
  • the 62d range is an element capacitive adaptation.
  • the variant of the second embodiment shown in Figures 9 and 10 also relates to a means of adaptation both inductive and capacitive relative to the radiating element.
  • the way adaptation comprises three 61e conductive elements, 62nd and 63rd.
  • the first element 61e is a band conductor which extends the inner conductor 71 of the excitation probe substantially perpendicularly on the upper face of the jump.
  • the band 61e is supported by a wall of the recess perpendicular to the ground plate 3, as the band 61d.
  • the second element 62nd is a band conductive which extends over the entire bottom of recess 51e, parallel to the radiating element 4th and in the plane of symmetry XX and constitutes, partially with the band 61e, an inductive adaptation element.
  • the third 63rd element is a rectangular beach conductor connected to one end of the band 62e at bottom of the recess and extending against another wall of the recess 5e substantially parallel to a side of the jump and perpendicular to the plate mass 3.
  • the 63rd range has a height significantly less than the height h of the jump, and constitutes a capacitive coupling element with the element radiating 4th.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
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Claims (11)

  1. Antenne (1), ein dielektrisches Substrat (2) aufweisend, das eine erste und eine zweite Seite umfasst und eine Aussparung (5), die in der ersten Seite ausgebildet ist, eine leitfähige Massenplatte (3), die an der ersten Seite des Substrates angeordnet ist und die Aussparung abdeckt, ein strahlendes Element (4) vom Streifenleiter-Typ auf der zweiten Seite des Substrates und eine Anpassungsanordnung, die das strahlende Element mit einem Innenleiter (71) eines Erregungsmittels verbindet, das über einen Außenleiter (72) verfügt, der an der Massenplatte befestigt ist, dadurch gekennzeichnet, dass die Anpassungsanordnung (6) mindestens teilweise von einer Wand (51) der Aussparung (5) des Substrates (2) getragen wird.
  2. Antenne nach Patentanspruch 1, in der ein einziger dielektrischer Block die ganze Anpassungsanordnung trägt und durch Formen des Substrates (2) einschließlich der Aussparung (5) ausgebildet ist.
  3. Antenne nach Patentanspruch 1 oder 2, in der die Anpassungsanordnung einen leitfähigen Streifen (6) auf dem Grund (51) der Aussparung (5) umfasst, im Wesentlichen parallel zur Massenplatte (3) und mit einem ersten Ende (61), das mit dem Innenleiter (71) des Erregungsmittels verbunden ist, und einem zweiten Ende (62), das durch eine leitfähige Verbindungsleitung (63) im Substrat (2) mit dem strahlenden Element (4) verbunden ist.
  4. Antenne nach Patentanspruch 3, in der die Verbindungsleitung eine metallisierte Durchbohrung (63) ist, die im Substrat (2) zwischen dem Grund (51) der Aussparung und dem strahlenden Element (4) verläuft.
  5. Antenne nach Patentanspruch 4, in der die metallisierte Durchbohrung (63a) in der Verlängerung des Innenleiters (71) des Erregungsmittels verläuft.
  6. Antenne nach Patentanspruch 3, in der die Verbindungsleitung durch den Innenleiter (71, 63a) des Erregungsmittels gebildet wird, der das Substrat (2) zwischen dem Grund (51) der Aussparung und dem strahlenden Element (4) durchquert.
  7. Antenne nach Patentanspruch 3, in der das zweite Ende (62b) des leitfähigen Streifens (6b) aus einer metallisierten Durchbohrung im Substrat (2) zwischen dem Grund (51) der Aussparung (5) und einer Schmalseite (21) des Substrates (2) besteht, und die Verbindungsleitung einen leitfähigen Streifen (63b) umfasst, der auf der Schmalseite (21) des Substrates verläuft und mit der metallisierten Durchbohrung (62b) und einer Seite des strahlenden Elementes (4) verbunden ist.
  8. Antenne nach irgendeinem der Patentansprüche 1 bis 7, in der die zweite Seite des Substrates einen Vorsprung (8) aufweist, der in Längsrichtung verläuft und mit dem strahlenden Element (4c) bedeckt ist, und die Aussparung (5) unterhalb des Vorsprunges liegt und eine geringere Tiefe (p), als die Dicke (e) des Substrates (2b) abseits des Vorsprungs hat.
  9. Antenne nach Patentanspruch 1 oder 2, in der die Anpassungsanordnung einen leitfähigen Streifen (61d, 61e) umfasst, der im Wesentlichen senkrecht zu einem ersten Bereich des strahlenden Elementes (4d, 4e) steht und von einer Wand der Aussparung (5d, 5e) getragen wird, und der mit dem Innenleiter (71) des Erregungsmittels verbunden ist, und einen leitfähigen Bereich (62d, 63e), der im Wesentlichen parallel zu einem zweiten Bereich des strahlenden Elementes verläuft und von einer Wand der Aussparung getragen wird und der mit dem leitfähigen Streifen verbunden ist.
  10. Antenne nach Patentanspruch 9, in der der leitfähige Streifen (61d) den Innenleiter (71) des Erregungsmittels im Wesentlichen senkrecht zum ersten und zweiten Bereich des strahlenden Elementes fortsetzt, die in einem zentralen Bereich des strahlenden Elementes zusammenfallen.
  11. Antenne nach Patentanspruch 9, in der die zweite Seite des Substrates einen Vorsprung (8e) aufweist, der in Längsrichtung verläuft und vom strahlenden Element (4e) bedeckt ist, und die Aussparung (5e) unterhalb des Vorsprunges liegt und eine Tiefe (pd) hat, die größer ist, als die Dicke (e) des Substrates (2e) abseits des Vorsprunges, und in der der leitfähige Streifen (61e) den Innenleiter (71) des Erregungsmittels im Wesentlichen senkrecht und zentral zu einer Oberseite des Vorsprunges (8e) verlängert, und der leitfähige Bereich (63e) im Wesentlichen parallel zu einer Seite des Vorsprunges verläuft und durch einen anderen leitfähigen Streifen (62e) am Grund (51e) der Aussparung (5e) mit dem leitfähigen Streifen (61e) verbunden ist.
EP20030291382 2002-06-17 2003-06-11 Kompakte Streifenleiterantenne mit einer Anpassungsanordnung Expired - Fee Related EP1376758B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0207676 2002-06-17
FR0207676A FR2841046B1 (fr) 2002-06-17 2002-06-17 Antenne pastille compacte avec un moyen d'adaptation

Publications (2)

Publication Number Publication Date
EP1376758A1 EP1376758A1 (de) 2004-01-02
EP1376758B1 true EP1376758B1 (de) 2005-09-28

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EP20030291382 Expired - Fee Related EP1376758B1 (de) 2002-06-17 2003-06-11 Kompakte Streifenleiterantenne mit einer Anpassungsanordnung

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EP (1) EP1376758B1 (de)
DE (1) DE60301699T2 (de)
FR (1) FR2841046B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011117690B3 (de) * 2011-11-04 2012-12-20 Kathrein-Werke Kg Patch-Strahler

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027694B3 (de) * 2006-06-14 2007-09-27 Kathrein-Werke Kg Mehrschichtige Antenne planarer Bauart
US7741999B2 (en) 2006-06-15 2010-06-22 Kathrein-Werke Kg Multilayer antenna of planar construction
US9647328B2 (en) 2011-11-04 2017-05-09 Kathrein-Werke Kg Patch radiator

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
WO1995024746A1 (en) * 1994-03-08 1995-09-14 Cetelco Cellular Telephone Company A/S Hand-held transmitting and/or receiving apparatus
JP2000216630A (ja) * 1999-01-20 2000-08-04 Alps Electric Co Ltd アンテナ付き送受信器
US6346913B1 (en) * 2000-02-29 2002-02-12 Lucent Technologies Inc. Patch antenna with embedded impedance transformer and methods for making same
JP2001298320A (ja) * 2000-04-13 2001-10-26 Murata Mfg Co Ltd 円偏波アンテナ装置およびそれを用いた無線通信装置
KR100349422B1 (ko) * 2000-04-17 2002-08-22 (주) 코산아이엔티 마이크로스트립 안테나
US6407707B2 (en) * 2000-06-27 2002-06-18 Toko, Inc. Plane antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011117690B3 (de) * 2011-11-04 2012-12-20 Kathrein-Werke Kg Patch-Strahler

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DE60301699D1 (de) 2005-11-03
FR2841046B1 (fr) 2006-06-16
FR2841046A1 (fr) 2003-12-19
EP1376758A1 (de) 2004-01-02
DE60301699T2 (de) 2006-06-22

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