EP1743398A1 - Coupleur d'antenne - Google Patents

Coupleur d'antenne

Info

Publication number
EP1743398A1
EP1743398A1 EP05716538A EP05716538A EP1743398A1 EP 1743398 A1 EP1743398 A1 EP 1743398A1 EP 05716538 A EP05716538 A EP 05716538A EP 05716538 A EP05716538 A EP 05716538A EP 1743398 A1 EP1743398 A1 EP 1743398A1
Authority
EP
European Patent Office
Prior art keywords
antenna
spiral
antenna coupler
coupler according
mobile radio
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Withdrawn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
EP05716538A
Other languages
German (de)
English (en)
Inventor
Adam c/o Willtek Communications Inc. NOWOTARSKI
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.)
Willtek Communications GmbH
Original Assignee
Willtek Communications GmbH
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 Willtek Communications GmbH filed Critical Willtek Communications GmbH
Publication of EP1743398A1 publication Critical patent/EP1743398A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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

Definitions

  • the invention relates to an antenna coupler for testing mobile radio devices, which has an antenna element for radio communication with the mobile radio device and a receiving element for holding the mobile radio device.
  • Such an antenna coupler is described, for example, in DE 19 732 639 C1. It is used for testing mobile devices, especially mobile phones. Antenna couplers enable a complete final test of a mobile radio device, since radio properties of the mobile radio device, in particular the antenna effect, can also be checked. If one instead resorted to a high-frequency connection often present on mobile radio devices for the function test, the antenna would not be tested at all and antenna errors would not be detectable.
  • inductive coupling In the case of inductive coupling, a coil is used as the coupling element, in the middle of which the antenna of the mobile radio device is inserted. The high-frequency field of the antenna of the mobile radio device then couples over to the coil and can thus be evaluated for further test purposes.
  • inductive coupling elements achieve a very high coupling factor, the mechanical design is difficult. In particular, it is imperative that the coil surround the antenna of the mobile radio device. With surface antennas increasingly used in mobile radio devices, inductive coupling can therefore not be used at all or only to a very limited extent.
  • inductive couplings also meet measurement-technical concerns, since the small distance between the coupling coil and the mobile radio antenna can cause an antenna detuning with a change in the base resistance of the mobile radio antenna. The result is a falsification of the level in the measuring mode.
  • capacitive couplings are known in which a mobile radio surface antenna is opposed to a counter surface in such a way that the two surfaces form a capacitor, via which high-frequency energy can be drawn from the mobile radio device.
  • the coupling factors achieved depend very much on the distance between the opposing surfaces; the coupling factor changes with the distance square. For high coupling factors, a very small distance between the two surfaces is therefore necessary.
  • DE 19 732 639 C1 therefore proposes an antenna coupler in which the coupling takes place via an antenna element. This is placed near the antenna of the mobile radio device and is neither capacitive nor inductive in its effect. The antenna element hardly leads to interference and in particular shows a comparatively lower sensitivity to changes in distance. However, it is essential that the antenna element is tuned to the frequency of the mobile radio device, as a result of which, in known antenna elements, the covered frequency range is less than the range in which the various mobile telephone systems operate.
  • the antenna coupler described in DE 19 732 639 C1 therefore has two independent, spatially separated surface antennas.
  • a dipole antenna is provided for a frequency range from 1.7 to 2.0 GHz and a slot antenna for a frequency range around 0.9 GHz in order to be able to test mobile telephones of all common networks.
  • the spatial separation of the surface antennas imposes certain requirements on the orientation of the cell phone so that the cell phone antenna is at a similar distance to each of the two surface antennas.
  • DE 101 29 408 A1 proposes a single antenna for all frequency ranges to be covered.
  • the antenna is designed as a closed loop, which is made up of an inner conductor and an outer conductor.
  • the loop is fixed by several Teflon holders above a reflector level.
  • the height of the loop above the reflector level is essential for the working frequency of the antenna, so it must be set as precisely as possible.
  • the concept of DE 101 29 408 A1 thus leads to an antenna construction which is relatively complex compared to the known surface antenna.
  • the invention is therefore based on the object of providing an antenna coupler in which the requirements for the alignment of the mobile telephone can be reduced and at the same time a more simply constructed antenna is possible.
  • This object is achieved with an antenna coupler for testing a mobile radio device, which has a receiving element for holding the mobile radio device and an area spiral antenna underneath for radio communication with the mobile radio device.
  • the antenna coupler according to the invention covers a frequency range from 0.5 to 3.0 GHz with a single antenna, which is also easy to manufacture from printed circuit board material, whereas in the prior art complex antenna concepts for such broadband were previously necessary.
  • the antenna coupler according to the invention thus combines the advantages of the solutions known in the prior art and avoids their disadvantages.
  • spiral antennas have so far not been used for radio communication with mobile radio devices in antenna couplers, which is probably also due to the fact that they have been described for very high-frequency applications.
  • the publication Wang J., "Design of Multioctave Spiral-Mode Microstrip Antennas", IEEE Transactions on Antennas and Propagation, Vol. 39, No. 3, p. 332, 1991 mentions frequencies in the 10 GHz range
  • spiral antennas usually generate a circularly polarized field, but surprisingly, according to the inventor's knowledge, this has no disadvantages for mobile radio applications.
  • a spiral antenna can be designed as a single-arm or multi-arm spiral.
  • two conductor strips in the form of an intertwined double spiral can lie side by side. It has been shown that an antenna coupler with such a two-arm spiral antenna achieves particularly good coupling factors with the mobile radio device to be tested. It is preferred to form the spiral antenna by two conductor strips wound in the form of a double spiral, the conductor strips being offset from one another by 180 ° with respect to the origin.
  • the surface antenna spiral can be implemented in various ways; an adaptation to geometric framework conditions is therefore possible. It can be designed as a square or round Archimedean spiral or as a logarithmic spiral. Depending on the housing and configuration, one of these variants can achieve optimal coupling factors.
  • a flat spiral antenna radiates electrical power in both directions perpendicular to the surface. Since the mobile radio device is only on one side of the surface of the antenna coupler, it is advantageous to use a spiral antenna based on the position of the mobile radio device Mount shielding plane to absorb or reflect radiation power that the spiral antenna emits away from the mobile device.
  • Both spiral antenna and shielding level can be formed by printed circuit boards. It is possible to use multilayer printed circuit board systems. It has been shown that the distance between the surface of the spiral antenna and the shielding plane should be less than or equal to a quarter wavelength of the radiation to be transmitted, since otherwise the radiation properties can be significantly disturbed. In a preferred embodiment of the invention, values of around 2.3 cm are realized, which means that conventional multi-layer boards for the production of spiral antennas and shielding plane can be eliminated. It is therefore preferred either to use a special circuit board with distances in the centimeter range between two conductor levels or to form the spiral antenna and shielding level from independent, spaced-apart circuit boards.
  • the spiral antenna of the antenna coupler according to the invention has a symmetrical input in a two-arm design.
  • asymmetrical coaxial cabling is used in most measuring systems for which the antenna coupler is to be used. It is therefore advantageous to develop the antenna coupler, which has a connection system for the spiral antenna, which conducts a coaxial input to the two arms of the spiral antenna such that one arm of the spiral antenna is connected to the coaxial center contact and the other arm is connected to the coaxial shield contact.
  • a converter is used for the connection system, which is also referred to in the English language as "balun" and which suitably converts the parallel inputs of the biaxial spiral antenna for a coaxial input.
  • Such converters are known in principle in the prior art
  • the converter is placed between the spiral antenna and an additional shield and connects the two arms of the spiral antenna with the center contact of the coaxial input and the Shield which is then connected to the coaxial shield contact
  • the shield can be designed as a shield plane arranged under the spiral antenna.
  • the broadband properties of the spiral antenna remain unaltered if the converter is connected to the center contact of the coaxial input by means of a conductor strip and the conductor strip has at least one tuning element for frequency adaptation.
  • This tuning element can be implemented, for example, in the form of one or more shielding webs attached to the conductor strip and / or a suitable variation of the width of the conductor strip.
  • the converter is arranged essentially centrally under the spiral antenna, it is optimally kept away from interferences in the arrangement mentioned between the spiral antenna and the shield. A possible fault could then only result from the line connecting the converter to the center contact of the coaxial input. This disturbance is suppressed to a maximum if the shielding is in two layers and there is a shielding level between the converter and the conductor connecting the center contact of the coaxial input.
  • the converter is therefore located between a stack of circuit boards, on the upper circuit board of which the spiral antenna is formed and whose lower, on two-layer circuit board, performs shielding tasks and the contacting of the converter from the coaxial side.
  • connection system can sometimes lead to anisotropy of the field radiated by the spiral antenna.
  • This anisotropy means that the main axis, on which the maximum radiation intensity is reached, no longer runs perpendicular to the antenna surface, but tilts out of the vertical. If one arranges the conductor strips of the connection system running away from the mobile radio device (i.e. from the receiving element), it is achieved that the tilt lies towards the mobile radio device. It then has a considerably less disruptive effect.
  • a development is therefore preferred in which the receiving element is arranged in at least one rest position in one half of the antenna coupler and the conductor track structure of the connection system lies in the other half of the antenna coupler and runs away from the receiving element.
  • FIG. 1 is a perspective view of an antenna coupler
  • 2 shows a sectional view through the antenna coupler of FIG. 1
  • FIG. 3 shows a top view of an antenna board of the antenna coupler of FIG. 1
  • FIG. 4 shows a top view of a first, upper screen plane of a grounding board of the antenna coupler of FIG. 1
  • Figure 1 shows a perspective view of an antenna coupler 1, which is used to wirelessly integrate a (not shown) mobile radio device (e.g. a mobile phone or the like) into a measuring system.
  • the antenna coupler 1 which can also be seen in a sectional view in FIG. 2, establishes radio communication with the mobile radio device and is in turn (in a manner not shown) wired to a measuring device.
  • the antenna coupler 1 has a housing 2 on which a holder 3 is formed, which in the exemplary embodiment shown is implemented as a universal mobile radio device holder. It can accommodate a wide variety of mobile phones and PDA-mobile phone combination devices.
  • the holder 3 is fastened on a carriage 4, which is displaceably guided on a frame 5, which forms the upper side of the housing 2.
  • the mobile radio device For measuring, the mobile radio device is inserted into the holder 3 and, in the construction shown in FIG. 1, fixed with jaws 6, 7 of the holder 3.
  • the radio communication takes place between the antenna of the mobile radio device and an antenna which is fastened in the housing 2 below the frame 5.
  • the antenna of the antenna coupler is designed as a surface antenna using stripline technology.
  • the mobile radio device On the underside of the holder, the mobile radio device is located at a stop 8, so that it is securely held on a support surface 9 by the clamping jaws 6, 7 and the stop 8. Depending on the design, the mobile device protrudes more or less from the holder 3. In most mobile devices, the antenna is in this protruding area.
  • the carriage 4 In order to avoid interference with radio communication, the carriage 4 therefore has a recess 10, so that no or as little as possible potentially disruptive material comes to rest between an antenna of a mobile radio device protruding over the holder 3 and the surface antenna of the antenna coupler 1.
  • the carriage 4 is displaceable along the longitudinal axis of the antenna coupler 1. It has a latching mechanism 11 which, together with grooves formed on the frame 5, locks the carriage 4 in different positions. Pointers attached to the slide 4 make it easy to recognize the position of the slide 4 when above the surface antenna (still too descriptive) markings are attached.
  • a mobile radio device placed on the support surface 9 of the holder 3 and fixed by means of the clamping jaws 6 and 7 can thus be placed in an optimal position with respect to the surface antenna.
  • a button is provided on the holder 3, which releases a locking mechanism provided in the holder 3 and locking the clamping jaws 6 and 7.
  • the housing 2 is constructed from a base part 11 and the frame 5 fastened thereon.
  • the frame 5 is connected to the base part 11 via pins 12 and clamps an antenna plate 13 in the interior 14 of the housing, on which the surface antenna is formed.
  • An antenna feed line runs to the antenna board 13 in the housing interior 14 via a converter 15 to a grounding board 16, on which a coaxial input is also provided.
  • the converter 15 On the lower side of the antenna board 13 in relation to the position of the mobile radio device, i.e. On the side of the antenna board 13, which lies towards the housing interior 14, a two-armed spiral antenna is formed, which will be explained in more detail later with reference to FIG. 3.
  • the connections of the two arms of the spiral antenna are connected by the converter 15 to the underside of the grounding board 16 lying under the antenna board 13.
  • the converter 15 directs the two connections of the spiral antenna, which, as will be explained later, lie side by side, to the coaxial input. It is therefore connected on the input side to the antenna board 13 and on the output side to a shield contact and a center contact of the coaxial input.
  • the converter 15 is the component ETC1.6-4-2-3, which is sold by AMP Incooperated, USA, under the trade name M / A-COM.
  • a shielding surface is provided, which is suitably structured for the converter 15 and otherwise serves as a ground plane.
  • a shielding structure is also provided on the underside of the grounding board 16 and a corresponding connecting conductor which places the converter 15 on the center contact of the coaxial connection. This will be described later with reference to FIGS. 4 and 5.
  • the antenna board 13 lies with respect to the slide 4 with its spiral antenna structure downward in the housing and forms the upper side of the housing 2 in the area of the interior of the frame 5.
  • the conductor structure of the spiral antenna is thus protected from damage.
  • the grounding board 16 shields the spiral antenna from below and also functions as a reflector.
  • the distance between the grounding board and the spiral antenna is approximately 2.3 cm in the exemplary embodiment. It is usually not much larger than a quarter of the Wavelength of the upper limit of the desired frequency band in which the antenna coupler is used.
  • the reflector effects an amplification according to the function sin (2 ⁇ A / ⁇ ), with A as the distance between the surface of the spiral antenna and the shielding plane and ⁇ the wavelength of the emitted radiation.
  • the bottom part 11 shields the inside of the housing and the antenna at the edge.
  • the antenna board 13 is shown in FIG. 3 in a top view of the conductor structure.
  • the conductor track is structured in the form of a spiral antenna 17, which is constructed from two Archimedean spiral arms 18, 19.
  • the spiral arms 18 and 19 are offset from one another by 180 ° with respect to an antenna base point 20, which is the center of the spiral.
  • the circular Archimedean spiral used in the exemplary embodiment in FIG. 3 essentially satisfies the equation r - a ⁇ (r: radial coordinate, ⁇ : angular coordinate, a: growth parameter) in polar coordinates.
  • r radial coordinate
  • ⁇ angular coordinate
  • a growth parameter
  • Conductor strips only differ with regard to parameter b.
  • Values b1 and b2 define the first spiral arm 18 and the difference
  • the parameters are selected such that the spiral arms 18 and 19 have the same width and the distance between the spiral arms 18 and 19 is somewhat larger than the strip width.
  • the equation a 2BI ⁇ applies to the spiral antenna 17 between the conductor strip width B and the growth parameter a.
  • the conductor portion of the spiral antenna 17 affects the impedance of the antenna.
  • the ratio between the spiral arm width and the distance between the spiral arms allows the proportion of conductor strips to be set in the total area.
  • a square or rectangular spiral is alternatively also possible, which corresponds to the spiral antenna of FIG. 3 in a square or rectangular shape.
  • a hyperbolic or logarithmic spiral can also be used.
  • the converter 15 Arranged under the base point 20 of the spiral antenna 17 is the converter 15 shown in FIG. 2, which converts the two spiral arms 18 and 19 with the coaxial shield connection, ie the Grounding board 16, and also connected to the coaxial center connection via a conductor track structure.
  • FIG. 4 shows the shielding plane on the upper side 22 of the grounding board 16.
  • the second shielding plane arranged on the underside 23 of the grounding board 16 is shown with the conductor strip structure mentioned.
  • converter contacts 24 are formed, with which the output of the converter 15 with the coaxial shield connection d. H. the metallized top 22 of the grounding board 16 is connected.
  • a conductor track structure is also formed which, via a conductor strip 26, places a center tap 25 of the converter 15 on a center contact 28 of the coaxial input.
  • the coaxial input (not shown in Fig. 5) is attached to the grounding board 16 and with its shield connection to both grounding levels, i. H. connected to the metallizations on the top 22 and bottom 23 of the grounding board 16.
  • the frequency response of the conductor strip 26 does not disturb the broadband nature of the spiral antenna 17 and ideally compensates for frequency irregularity caused by the converter 15, in one embodiment it has a varying width over its length and is provided with tuning bars 27 which run transversely or obliquely to the elongate one Conductor strips 26 lie.
  • the structure shown in FIG. 5 can also be the only ground level and the additional level of FIG. 4 can be dispensed with.
  • a further shielding level can be provided below the level of the conductor strip 26.
  • a front film can be glued onto the antenna board 13, which in addition to an index mark running along the longitudinal inner edge of the frame 5 also has a center mark ( from concentric closed curves).
  • the center is the base 20 of the Spiral antenna 17.
  • the index markings allow a user to reproducibly move to a position of the carriage 4. This makes it possible to provide maintenance instructions for a specific type of mobile radio device with the corresponding index information, so that mobile radio devices of this type are always tested reliably in the same mutual alignment of the antenna of the mobile radio device and the spiral antenna 17. If one does not want to make such specifications, or if they are not available, a user can find the optimal alignment of the mobile radio antenna with respect to the spiral antenna 17 by means of the center marking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un coupleur d'antenne (1) conçu pour tester des appareils de téléphonie mobile. Ce coupleur d'antenne comprend un élément de réception qui permet de maintenir l'appareil de téléphonie mobile et une antenne hélicoïdale plane à deux bras (17) qui se trouve en dessous de l'élément de réception et permet une communication radio avec l'appareil de téléphonie mobile.
EP05716538A 2004-04-28 2005-04-05 Coupleur d'antenne Withdrawn EP1743398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56614404P 2004-04-28 2004-04-28
PCT/EP2005/003579 WO2005109571A1 (fr) 2004-04-28 2005-04-05 Coupleur d'antenne

Publications (1)

Publication Number Publication Date
EP1743398A1 true EP1743398A1 (fr) 2007-01-17

Family

ID=34963024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05716538A Withdrawn EP1743398A1 (fr) 2004-04-28 2005-04-05 Coupleur d'antenne

Country Status (4)

Country Link
US (1) US20050264469A1 (fr)
EP (1) EP1743398A1 (fr)
DE (1) DE102004033383A1 (fr)
WO (1) WO2005109571A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005005261A1 (de) * 2005-02-04 2006-08-10 Rohde & Schwarz Gmbh & Co. Kg Antennenkoppler mit Anschlagwinkel
KR20080081284A (ko) * 2006-01-27 2008-09-09 엘지전자 주식회사 전기 기기 원격제어 시스템
DE102006045645B4 (de) * 2006-09-27 2015-05-07 Rohde & Schwarz Gmbh & Co. Kg Antennenkoppler
FI122691B (fi) * 2007-06-05 2012-05-31 Upm Kymmene Corp Menetelmä paperin valmistamiseksi
EP2073312B1 (fr) 2007-12-18 2011-04-20 Rohde & Schwarz GmbH & Co. KG Coupleur d'antennes
DE102010007293A1 (de) 2010-02-08 2011-08-11 Willtek Communications GmbH, 85737 Vorrichtung und Verfahren zur Durchführung eines Audio- und/oder Vibrationstests an einem Mobiltelefon
DE202010010507U1 (de) 2010-07-21 2010-09-30 Aeroflex Gmbh Abschirmgehäuse
US9407004B2 (en) 2012-07-25 2016-08-02 Tyco Electronics Corporation Multi-element omni-directional antenna

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5508710A (en) * 1994-03-11 1996-04-16 Wang-Tripp Corporation Conformal multifunction shared-aperture antenna
DE19732639C1 (de) * 1997-07-29 1999-01-28 Wavetek Gmbh Antennenkoppler zum Testen von Mobiltelefonen
DE29723679U1 (de) * 1997-07-29 1998-12-24 Wavetek GmbH, 85737 Ismaning Antennenkoppler zum Testen von Mobiltelefonen
US6134421A (en) * 1997-09-10 2000-10-17 Qualcomm Incorporated RF coupler for wireless telephone cradle
FI20010957A0 (fi) * 2001-05-08 2001-05-08 Antero Risto Matkapuhelimen antennisovitin
DE10129408A1 (de) * 2001-06-19 2003-01-02 Rohde & Schwarz Antennenkoppler
US6839032B2 (en) * 2001-08-30 2005-01-04 Anritsu Corporation Protable radio terminal testing apparatus using single self-complementary antenna
DE10313498A1 (de) * 2002-05-18 2003-12-04 Audioton Kabelwerk Gmbh Antennenkoppler und Halterung für Mobilfunkendgeräte
DE10318296B3 (de) * 2003-04-23 2005-01-13 Audioton Kabelwerk Gmbh Fahrzeug-Mobilfunkhalterung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005109571A1 *

Also Published As

Publication number Publication date
WO2005109571A1 (fr) 2005-11-17
DE102004033383A1 (de) 2005-11-24
US20050264469A1 (en) 2005-12-01

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