EP2081254B1 - Coupleur d'antennes - Google Patents

Coupleur d'antennes Download PDF

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Publication number
EP2081254B1
EP2081254B1 EP09005697A EP09005697A EP2081254B1 EP 2081254 B1 EP2081254 B1 EP 2081254B1 EP 09005697 A EP09005697 A EP 09005697A EP 09005697 A EP09005697 A EP 09005697A EP 2081254 B1 EP2081254 B1 EP 2081254B1
Authority
EP
European Patent Office
Prior art keywords
slot
circuit board
reflector
spiral
printed circuit
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.)
Active
Application number
EP09005697A
Other languages
German (de)
English (en)
Other versions
EP2081254A1 (fr
Inventor
Martin Roth
Andreas Schiessl
Gottfried Holzmann
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Priority to EP09005697A priority Critical patent/EP2081254B1/fr
Publication of EP2081254A1 publication Critical patent/EP2081254A1/fr
Application granted granted Critical
Publication of EP2081254B1 publication Critical patent/EP2081254B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/10—Logperiodic antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/10—Logperiodic antennas
    • H01Q11/105—Logperiodic antennas using a dielectric support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas

Definitions

  • the invention relates to an antenna coupler for testing a mobile device.
  • antenna couplers use a capacitive or inductive coupling in order to transmit signals between the mobile device and the test device connected to the antenna coupler in order to carry out the test.
  • One problem is that different mobile devices work in different frequency ranges.
  • the spiral-shaped antenna structure can be formed, for example, on a printed circuit board by strip conductors formed there.
  • the problem with the proposed spiral antenna for An antenna coupler is that in conventional antennas in the near field, a strong interaction between the radiating element, so the spiral antenna, and the metallic, radiating antenna part by the mobile device occurs.
  • the antenna coupler according to the invention for testing a mobile radio device has a coupling element formed by means of strip conductors on a printed circuit board.
  • a receiving device for positioning a mobile device in the immediate vicinity of the coupling element is formed on a first side of a printed circuit board.
  • On the first side of the printed circuit board at least one slot structure is introduced into a mass metallization formed there.
  • a strip conductor formed on the second side of the printed circuit board facing away from the mass metallization is used. This strip conductor forms a microstrip line with the remaining parts of the mass metallization formed on the first side.
  • a broadband acting, formed on a printed circuit board antenna structure whose areal coupling element as a slot structure is formed it is achieved that only one antenna must be provided to cover the usual mobile radio frequencies.
  • the influence that is present in conventional antennas, which allow such a broadband application, due to the metallic objects, for example within the mobile device, is thereby suppressed by the use of a slot structure.
  • the use of such a slot structure is particularly advantageous because the usual approximations in the observation of antennas due to the interaction in the near field range does not apply.
  • the slot structure is formed spirally or as parallel slot elements. With such a spiral slot structure, an excellent coupling result can be achieved within the usually quite limited geometric dimension which the antenna coupler is allowed to have.
  • the slit-like and helically wound coupling structure achieves an excellent coupling factor without impairing the performance of the entire antenna coupler through the interaction with the metallic objects already explained.
  • each slit arm of helical structure remote from the feed point is preferably terminated by a plurality of successively arranged resistors. These are arranged, preferably in SMD technology, so that they span the slot of the slot structure. This makes it possible to achieve an impedance-compliant termination of the respective slot structures, the space required being very small.
  • a so-called logarithmic periodic slot antenna can also be designed as a coupling element.
  • a plurality of parallel straight slot elements is formed on the first side of the printed circuit board by interrupting the ground metalizations formed there, the length of which increases with increasing distance from a feed point.
  • the individual slot elements are connected at one end to each other, wherein the thus formed common slot part is perpendicular to the extension direction of the slot elements.
  • the slot width of the slot arms in the case of a spiral slot structure or the slot width of the slot elements and a common slot portion in the case of a logarithmic-periodic Slot structure increases according to a preferred embodiment with increasing distance from the feed point. According to another embodiment, in the case of spiral slot structures, it is particularly advantageous to provide a uniform slot width over the entire frequency range in which the antenna structure is used as the coupling element.
  • the coupling properties can be further improved if the slot structures are formed meander-shaped.
  • the meandering geometry can be z. B. have a rectangular structure, a triangular structure or a sinusoidal shape. While the overall geometry is spiral-shaped or logarithmic periodic, the individual slit arms or slit elements of this basic shape follow meandering.
  • a reflector is formed on the second side of the circuit board.
  • the reflector is formed by a housing part of the antenna coupler.
  • the housing is preferably designed as a box-shaped closed housing, wherein a cover element is designed to be hinged.
  • the lower part serves to receive the printed circuit board of the antenna coupler, wherein the bottom of the lower part is then formed as a reflector.
  • the gap between the reflector and the slot structure as a coupling element can be filled with a dielectric material to achieve particularly good measured values.
  • This Dielectric material may be particularly preferably formed so that it serves to fix the circuit board together with the structures formed there.
  • an absorber material on the reflector whose thickness is at most one third of the distance between the reflector and the printed circuit board.
  • a thickness of the absorber material is of 5 mm provided at a distance between the reflector and the circuit board of 16 mm.
  • the absorber material is in particular a carbon-filled absorber foam. This arrangement has the advantage that a small ripple occurs due to the damped reflections.
  • the Fig. 1 shows a housing 1 of an antenna coupler.
  • the housing 1 has a lower part 2a and a cover part 2b.
  • the lower part 2a and the lid part 2b are hinged together.
  • the lower part 2a is open on one side and surrounds a first volume 4.
  • this first volume 4 in which in the Fig. 1 Only a flat plate is used, at least the circuit board is used, on which the coupling structures are formed.
  • a second volume is formed in the lid part 2b.
  • This second volume 5 is empty in the illustrated embodiment of the housing 1.
  • the second volume 5 is filled with an absorber material.
  • pyramidal structures may be embodied in an absorbent material with the entire absorber element secured to the lid portion 2b.
  • a shutter mechanism 3 is formed on the lid part 2b. In the illustrated embodiment, this is rotatable and engages in a locking lug on the lower part 2a.
  • the antenna coupler 10 comprises a printed circuit board 8. On a first side of the printed circuit board 8, which when installed in the Housing 1 is oriented in the direction of the lid part 2b, a mass metallization 7 is applied. In the mass metallization 7 a slot structure is introduced. In the illustrated embodiment, the slot structure is formed spirally and has a first slot arm 11 and a second slot arm 11 'on. The two slit arms 11, 11 'merge into each other at a feed point 9. As the distance from the feeding point 9 increases, the width of the slot of the slot arm 11 and the slot arm 11 'increases.
  • the formation of the slot structure in the mass metallization 7 can be carried out in a conventional manner, for example by etching.
  • a reflector 6 is arranged on the side facing away from the mass metallization 7 second side of the circuit board 8. Due to the reflector 6, a metallic element, the electromagnetic fields on the side of the printed circuit board 8 facing the mobile device to be tested overlap positively.
  • a so-called active zone of the slot structure results in each case as a coupling element.
  • the active zone is essentially a circular ring whose center coincides with the feed point 9.
  • the average diameter of the annulus is reduced.
  • a frusto-conical geometry of the reflector 6 is in the Fig. 2b shown in a three-dimensional view.
  • the reflector 6 consists of the circular segment 3 and the conical surface 14. The distance of the circular segment 13 from the feed point 9 is determined by the upper limit frequency.
  • the slot structures also have line properties and thus electromagnetic waves are guided through the slots, there is a coupling mechanism on near and stray fields. It can therefore also occur a coupling below a theoretical lower limit frequency of the structure.
  • FIG. 3a shows a so-called logarithmic-periodic structure.
  • Slot elements 21.1,... 21.14 are arranged parallel to each other.
  • the distance d i between the centers of two adjacent slit elements 21.i thus increases with increasing distance from the feed point 19.
  • the slit width b i increases as well. Both, the distance d i and the slot width b i , thereby increases with the logarithm of the distance from the feed point 19.
  • the slot elements 21.i are connected to one another via a common slot part 23.
  • the slot elements 21.i extend alternately in each case opposite direction.
  • the common slot part 23 and the extension direction of the individual slot elements 21.i are perpendicular to each other, wherein the common slot part 23 extends through the feed point 19.
  • the alternating arrangement of the slot elements 21.i is chosen so that overall results in a respect to the feed point 19 point-symmetrical geometry.
  • the reference numerals are given only for a part of the slot elements 21.i.
  • a slot member 21.i The respectively remote from the common slot portion 23 end of a slot member 21.i is formed so that the ends of the slot elements 21.i, which extend to one side of the common slot portion 23, lie on a common, extending through the feed point 19 lines. This applies to the slit element 21 .i extending to the other side of the common slit part 23 in the same way.
  • the outer boundary of the resulting entire slot structure is therefore approximately equal to a section through a double cone.
  • the active zone is formed in each case by those slot elements 21.i whose length is approximately ⁇ / 4 or slightly shorter.
  • the reflector 6 or 6 ' is formed by the bottom of the lower part 2a of the housing 1. An additional component can thus be omitted.
  • FIG. 4 another example of a spiral slot structure is shown.
  • the antenna coupler 30 thus produced is in turn formed by the two-arm spiral slot structure having a first slot arm 31 and a second slot arm 31 '.
  • the two slot arms 31 and 31 ' each have a tangentially extending slot end 32 and 32', respectively.
  • the entire structure is symmetrical with respect to the feeding point 29 of the antenna coupler 30.
  • 32 ' is in each case a sequence of a plurality of successively arranged resistors 33 and 33' is formed.
  • the resistors connect the ground metallization sections remaining on both sides of the respective slotted arm 31, 31 '.
  • a slotted arm designed, for example, with a characteristic impedance of 100 ohms can be varied over a wide range by selecting the resistors 33 or 33 ', which are preferably applied in SMD technology.
  • the resistors 33 or 33 ' which are preferably applied in SMD technology.
  • the structure obtained is particularly insensitive to positional uncertainties in the positioning of the mobile device.
  • the one in the Fig. 5 shown Archimedean spiral a looser winding on.
  • the spiral is two-armed with a first slotted 41 and a second slotted 41 'executed.
  • the respective end regions 42, 42 ' are also terminated by a series of SMD resistors 43, 43'.
  • the slot width of the otherwise uniformly wide slot arms 41, 41 ' can also taper in the direction of the end facing away from the feed point 39.
  • Fig. 6 is a logarithmic spiral.
  • the spiral slot structure again has a first slot arm 51 and a second slot arm 51 'forming the antenna coupler 50.
  • the geometry of the logarithmic spiral remains in the region of the ends 52, 52 'of the first slot arm 51 and of the second slot arm 51'.
  • the slot ends 52 and 52 ' therefore, in contrast to the previous examples of the 4 and 5 not on the geometry of the slot arms 51, 51 'to the feed point 49 from.
  • the end portions 52, 52 'taper as already explained.
  • a plurality of resistors 53 and 53 ' are formed in succession in the tapered region for closing off the slot arms 51, 51'.
  • the characteristic impedance of a slit arm is preferably 100 ohms.
  • FIG Fig. 7 Another embodiment of a slot structure is shown in FIG Fig. 7 shown.
  • the antenna coupler 60 shown there again has a two-armed spiral. Starting from the feed point 59 of the antenna coupler 60, an Archimedean spiral is first formed. As the distance from feed point 59 increases, the Archimedean spiral transforms into a logarithmic spiral. Instead of the first equidistant slot arm portions of the respective first area 61a, 61'a, the spiral widens with second slot arm portions in the second areas 61b and 61'b of the first slot arm 61 and the second slot arm 61 ', respectively.
  • the termination in the form of several successively arranged resistors in the respective end region 62, 62 'of the slot arms 61, 61' is formed.
  • the slit width of the first slit arm 61 and the second slit arm 61' in the embodiment of FIG Fig. 7 constant.
  • the preceding examples each show slot elements or slot arms, in which the formation of the edge of the mass metallization forming the slot extends substantially rectilinearly, or curved in accordance with the course of the spiral.
  • a meandering structure is shown.
  • the essential extent of the slots which corresponds either to the direction of the slot elements 21.i or the slot arms in the case of spiral slot structures, is indicated by the dot-dash line 71 in FIG Fig. 8 shown.
  • the edges of the slots now do not extend parallel to the essential direction of the slit arms or slit elements, that is to say the knot-dotted line 71. Rather, a regular, meander-shaped structure 70 is formed.
  • the lower limit frequency can be lowered again. This is especially the Reduce overall dimensions of the coupling structure and thus of the antenna coupler.
  • a rectangular meander is shown.
  • triangular or continuous forms can equally well be used. For example, a sinusoidal design is conceivable.
  • the meandering structure 70 is provided in particular in the outlet of the slit arms. So how can it in the FIGS. 4 and 5 the case is, the respective slotted arm 41, 41 'or 31, 31' terminate tangentially. This results in particular between the spiral portion and the slot end 32, 32 'and 42, 42', in the resistors 33, 33 'and 43, 43' for completing the slot arms 31, 31 'or 41, 41' are arranged a rectilinear Section. This rectilinear section is preferably used to form the meandering structure 70. Such a tangential part can also in the examples of FIGS. 6 and 7 be provided. Also in this case, the meandering structure 70 is formed in the straight portion of the slit arms.
  • the Fig. 9 shows finally a section through one of the antenna coupler with the geometries described above, when in a housing according to Fig. 1 is used.
  • the reflector 6 is formed by a part of the lower part 2a of the housing.
  • the circuit board 8 is arranged.
  • the mass metallization 7 is arranged on the circuit board 8.
  • the mass metallization 7 is covered by a cover 17.
  • This cover is made of a dielectric material and serves the Recording and positioning of a mobile device to be tested.
  • a recess 18 is provided, which may be adapted with regard to the geometry of the respective mobile device to be tested.
  • a separate holder or only a positioning aid can be provided.
  • a strip conductor 15 is formed on the reflector 6 facing the second side of the circuit board 8. Together with the mass metallizations 7 remaining between the slots 11, 11 ', this forms a so-called microstrip line.
  • the strip conductor 15 serves to feed the coupling structure and thus leads to the center located feed point 9.
  • a corresponding strip conductor is of course in the logarithmic-periodic structure of Fig. 3a also available.
  • the preferred embodiment is shown in which the remaining gap between the reflector 6 and the printed circuit board 8 is filled with a dielectric material 16.
  • the dielectric filling 16 and the printed circuit board 8 can be connected to one another such that they can be used as a one-piece device in the lower part 2 a of the housing 1.
  • Fig. 10 is a further example of a section through an antenna coupler ..
  • a flat reflector 6 is formed at a distance d from the printed circuit board 8.
  • the planar reflector 6" can in turn be realized through the housing bottom.
  • An absorber material 75 is arranged on the surface of the planar reflector 6 "oriented toward the printed circuit board 8.
  • the absorber material 75 may be, for example, a carbon-filled material Be absorber foam.
  • the thickness t of the absorber material 75 is preferably slightly less than 1/3 of the distance d. In a particularly preferred example, in particular with an absorber material 75 as a carbon-filled absorber foam, the distance d is 16 mm and the thickness t of the absorber material is 5 mm.
  • Fig. 11 is once again the center of the antenna coupler Fig. 7 shown enlarged.
  • the strip conductor 15 is shown in broken lines between the two slotted arms 61a, 61'a, which is arranged on the other side of the printed circuit board 8. This crosses in the region of the feed point 59 formed on the first side of the circuit board slot structure. At its end it is connected via a through-hole 76 with the mass metallization 7 formed between the slot structure.
  • the small distance between the flat reflector 6 "and the printed circuit board 8 not only leads to a smaller total volume of the antenna coupler but also offers advantages in terms of production.
  • the invention is not limited to the illustrated embodiment.
  • individual features of different embodiments can be combined with each other in an advantageous manner.
  • the frusto-conical reflector 6 can be combined with all spiral-shaped slot structures. It is also possible to use single-arm or multi-arm spirals instead of the two-armed ones shown.
  • the respective ends of the slits may be provided with a fishbone-like structure.
  • the antenna coupler is provided in particular for coupling in the near field at a distance of up to one wavelength.

Claims (2)

  1. Coupleur d'antennes pour tester un appareil radiotéléphonique mobile avec un élément de couplage réalisé d'une manière plane par des pistes conductives sur une carte imprimée (8) et avec un dispositif de réception (18) réalisé sur un premier côté de la carte imprimée (8) pour le positionnement d'un appareil radiotéléphonique mobile au voisinage de l'élément de couplage, où est ménagé sur le premier côté de la carte imprimée (8) au moins une structure à fentes (11, 11', 21.i, 23, 31, 31', 41, 41', 51, 51', 61, 61') dans une métallisation de masse (7) y réalisée, et pour l'alimentation de la structure à fentes (11, 11', 21.i, 23, 31, 31', 41, 41', 51, 51', 61, 61') servant d'élément de couplage, au moins un guide d'ondes à rubans (15) réalisé sur le second côté éloigné de celle-ci réalise avec la métallisation de masse (7) subsistant entre la structure à fentes (11, 11', 21.i, 23, 31, 31', 41, 41', 51, 51', 61, 61') du premier côté, une microbande, caractérisé en ce que la structure à fentes est réalisée en forme de spirale ou comme éléments de fente parallèles, et en ce qu'est réalisé sur le second côté de la carte imprimée (8) un réflecteur (6, 6') réalisé par le fond de la partie inférieure (2a) d'un boîtier (1) du coupleur d'antennes qui, dans le cas d'une structure à fentes en forme de spirale est tronconique et dans le cas d'une structure à fentes réalisée par des éléments de fente parallèles (21.i) est réalisé comme prisme.
  2. Coupleur d'antennes selon la revendication 1, caractérisé en ce qu'un espace intermédiaire entre le réflecteur (6, 6') et la structure à fentes est rempli avec un matériau diélectrique (16).
EP09005697A 2007-12-18 2008-04-25 Coupleur d'antennes Active EP2081254B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09005697A EP2081254B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07024557 2007-12-18
EP09005697A EP2081254B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes
EP08008065A EP2073312B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP08008065.8 Division 2008-04-25
EP08008065A Division EP2073312B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes

Publications (2)

Publication Number Publication Date
EP2081254A1 EP2081254A1 (fr) 2009-07-22
EP2081254B1 true EP2081254B1 (fr) 2011-06-15

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EP09005697A Active EP2081254B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes
EP08008065A Active EP2073312B1 (fr) 2007-12-18 2008-04-25 Coupleur d'antennes

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Country Status (6)

Country Link
US (1) US8810461B2 (fr)
EP (2) EP2081254B1 (fr)
JP (1) JP5357178B2 (fr)
AT (1) ATE513327T1 (fr)
DE (1) DE502008003262D1 (fr)
WO (1) WO2009077171A1 (fr)

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FR2965669B1 (fr) * 2010-10-01 2012-10-05 Thales Sa Reflecteur d'antenne large bande pour une antenne filaire plane a polarisation circulaire et procede de realisation du deflecteur d'antenne
US8665173B2 (en) * 2011-08-08 2014-03-04 Raytheon Company Continuous current rod antenna
US9437932B1 (en) * 2011-09-09 2016-09-06 The United States Of America As Represented By The Secretary Of The Navy Two-arm delta mode spiral antenna
WO2013096867A1 (fr) * 2011-12-23 2013-06-27 Trustees Of Tufts College Système, méthode et appareil comprenant une antenne en spirale hybride
US9128118B2 (en) 2012-08-21 2015-09-08 Apple Inc. Testing systems with automated loading equipment and positioners
US20140266149A1 (en) * 2013-03-12 2014-09-18 Motorola Mobility Llc Cover-testing fixture for radio frequency sensitive devices
KR101471931B1 (ko) * 2013-05-14 2014-12-24 광주과학기술원 안테나 장치 및 이의 제조 방법
CN110544821A (zh) * 2018-05-28 2019-12-06 云南电网有限责任公司保山供电局 一种输电线路电晕放电检测系统
US11588225B2 (en) * 2020-10-14 2023-02-21 Bae Systems Information And Electronic Systems Integration Inc. Low profile antenna

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US5053786A (en) * 1982-01-28 1991-10-01 General Instrument Corporation Broadband directional antenna
FR2556510B1 (fr) * 1983-12-13 1986-08-01 Thomson Csf Antenne periodique plane
US5227807A (en) * 1989-11-29 1993-07-13 Ael Defense Corp. Dual polarized ambidextrous multiple deformed aperture spiral antennas
US5274390A (en) * 1991-12-06 1993-12-28 The Pennsylvania Research Corporation Frequency-Independent phased-array antenna
JP3405829B2 (ja) * 1994-08-12 2003-05-12 明星電気株式会社 等角スパイラルアンテナ
US5815122A (en) * 1996-01-11 1998-09-29 The Regents Of The University Of Michigan Slot spiral antenna with integrated balun and feed
DE19717834B4 (de) * 1997-04-26 2006-12-14 Rohde & Schwarz Gmbh & Co. Kg Antennenkoppler für Mobiltelefone
DE19732639C1 (de) * 1997-07-29 1999-01-28 Wavetek Gmbh Antennenkoppler zum Testen von Mobiltelefonen
JPH11163622A (ja) * 1997-11-28 1999-06-18 Mitsubishi Electric Corp スパイラルアンテナ
WO2002029928A2 (fr) * 2000-10-02 2002-04-11 Israel Aircraft Industries Ltd. Antenne en spirale a fentes miniature
EP1422846A4 (fr) * 2001-08-30 2005-03-16 Anritsu Corp Instrument de test de terminal radio portable utilisant une antenne auto-complementaire unique
US7142821B1 (en) * 2002-12-19 2006-11-28 Itt Manufacturing Enterprises, Inc. Radio frequency transmitting and receiving module and array of such modules
DE102004033383A1 (de) 2004-04-28 2005-11-24 Willtek Communications Gmbh Antennenkoppler

Also Published As

Publication number Publication date
WO2009077171A1 (fr) 2009-06-25
US8810461B2 (en) 2014-08-19
EP2073312A1 (fr) 2009-06-24
EP2081254A1 (fr) 2009-07-22
US20100271267A1 (en) 2010-10-28
ATE513327T1 (de) 2011-07-15
EP2073312B1 (fr) 2011-04-20
JP2011507423A (ja) 2011-03-03
JP5357178B2 (ja) 2013-12-04
DE502008003262D1 (de) 2011-06-01

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