EP0377155B1 - Doppelfrequenz strahlende Vorrichtung - Google Patents

Doppelfrequenz strahlende Vorrichtung Download PDF

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Publication number
EP0377155B1
EP0377155B1 EP89123208A EP89123208A EP0377155B1 EP 0377155 B1 EP0377155 B1 EP 0377155B1 EP 89123208 A EP89123208 A EP 89123208A EP 89123208 A EP89123208 A EP 89123208A EP 0377155 B1 EP0377155 B1 EP 0377155B1
Authority
EP
European Patent Office
Prior art keywords
waveguide
excited
radiating
frequency
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 - Lifetime
Application number
EP89123208A
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English (en)
French (fr)
Other versions
EP0377155A1 (de
Inventor
Michel Salvan
Didier René
Philippe Lepeltier
Thierry Dusseux
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.)
Alcatel Espace Industries SA
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Alcatel Espace Industries SA
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Publication date
Application filed by Alcatel Espace Industries SA filed Critical Alcatel Espace Industries SA
Publication of EP0377155A1 publication Critical patent/EP0377155A1/de
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Publication of EP0377155B1 publication Critical patent/EP0377155B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode 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
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Definitions

  • the invention relates to a radiating device operating simultaneously in two different frequency bands; this device being able to generate in each frequency band two orthogonal polarizations: linear or circular.
  • the advantage of this device is that it is entirely compact: it can in particular be used in a dual-band multisource antenna possibly operating in two polarizations.
  • any radiating element in waveguide requiring operation at two separate frequencies and compact excitation from a TEM line supply (for example: coxial, triplate or microstrip line).
  • a device of the known art described in French patent FR 2598034 (application no. 8606127 of 04.28.1986) relates to a microwave rotating joint device, comprising a main circular guide consisting of two parts located in the extension one of the other and movable in rotation relative to each other about their axis of symmetry; with for each of these two parts, two accesses orthogonal thereto and orthogonal to each other, and being coupled to the outputs of a first hybrid coupler by means of two guides, and a cut-off guide, having two orthogonal accesses to it and orthogonal to each other; a hybrid coupler being connected at the input to these two guides.
  • Document FR-A-2 603 742 discloses a dual-frequency antenna exciter, comprising a main circular guide consisting of two parts of different diameters located one in the extension of the other. Each part of the main guide has two orthogonal accesses to the guide and between them; these accesses are waveguides which are respectively fed by orthogonal linear polarizations, in a first frequency range for the first part, and in a second frequency range for the second part.
  • Different solutions are proposed to improve the uncoupling of the four waves arriving in the exciter, for example: short-circuit screens, and / or spacers placed in specific places of the exciter, in replacement or in addition to the screens or the usual adjustment elements.
  • This document teaches the construction of a passive antenna excitation device by waves which are supplied on waveguides, with all the usual problems of microwave plumbing well known to those skilled in the art.
  • the object of the invention is to overcome these drawbacks.
  • the device of the invention proposes, in fact, a dual-frequency radiating device comprising two radiating elements and a discontinuity, the first radiating element being a wave guide excited in a first frequency range, leading to the second radiating element excited in a second frequency range, these two elements having the same axis of symmetry, the first frequency range being greater than the second frequency range, the two radiating elements having the same radiating opening, characterized in that the first radiating element is switched off with respect to the second frequency range to ensure decoupling between the signals radiated by these two elements, and in that said radiating device further comprises a first and a second source, the first element being a waveguide excited by the first source having the form of a resonant plate, and the second element being a waveguide excited by the second source having the shape of a resonant ring electrically connected in its central part to the first waveguide; this resonant ring constituting a rim of the first waveguide, the polarization being linear or circular.
  • the device of the invention as shown in Figures 1, 2 and 3 consists of two radiating elements, for example two guides 10 and 11, of the same longitudinal axis; each guide being excited by an antenna printed in linear or circular polarization.
  • the first guide 10 is excited at the high frequency, it is cut off with respect to the low frequency, directly generated in the second guide 11.
  • the wave is excited by a plated or printed antenna 12 , for example a resonant plate.
  • the second guide 11 is excited at the low frequency by an annular flat antenna 13 electrically connected (soldered for example) in its central part to the first waveguide 10.
  • This annular flat antenna 13, or resonant ring therefore constitutes, in a way so, an annular rim of the first waveguide 10.
  • Each of the antennas 12 and 13 is supplied by coaxial attacks 14, 15, 16 and 17.
  • each antenna is excited by two coaxial attacks 14 and 15 for the high frequencies, 16 and 17 for the low frequencies.
  • the adapted coaxial attacks are situated at 90 ° from one another relative to the center of the guides.
  • Each coaxial attack is supplied in phase quadrature by a hybrid coupler (coupler 18 for high frequencies, coupler 19 for low frequencies).
  • a hybrid coupler with branches for example.
  • hybrid couplers can be unbalanced in amplitude.
  • Hybrid couplers can also be replaced by "Tees", one track of the "Tee” being elongated with an electrical length of 90 °.
  • the attacks 16 and 17 of the second guide 11 low frequencies are located outside the outline of the first guide 10.
  • the printed high frequency antenna 12 is separated from the bottom of the aid 10 which is associated with it by a dielectric 20.
  • the low frequency antenna 13 is separated from the bottom of the guide 11 which is associated with it by a dielectric 21.
  • the size of the first guide 10 is calculated so that only the fundamental mode can be at the high frequency and so that the fundamental mode at the low frequency cannot propagate; therefore the insulation between the ports in the low frequency band is excellent.
  • one, the other or both antennas are constituted by a double resonator which allows to increase the bandwidth of the device.
  • the first waveguide 10 is excited at high frequencies by two concentric discs 12 and 22 spaced apart by a dielectric 23.
  • the second waveguide 11 is excited at low frequencies by two concentric rings 13 and 24.
  • the two rings being made in the mass, no dielectric is used for spacing.
  • one or the other or both antennas are constituted by a simple resonator excited by four coaxial attacks supplied in quadrature (0 °, ⁇ 90 °, ⁇ 180 °, ⁇ 270 ° ) by a device composed of a hybrid coupler 34 and two "mousetraps"("Ratrace” in English) or hybrid rings, or a hybrid coupler and two "Tees” adapted.
  • a hybrid coupler 34 each "mousetrap" or “tee” is balanced (3dB coupler) and thus generates circular polarizations in the waveguide.
  • the hybrid coupler produces the phase quadrature necessary for circular polarization.
  • the "mousetraps" or “Tees" constituting in fact balancing devices, can, moreover, be replaced by other types of "balun"("balanceunit” in English) or balancing systems.
  • the second guide 11 can also be produced by a planar network 40.
  • the device of the invention can comprise a resonator for each band as shown in FIGS. 1, 2 and 3, two resonators for each band, as shown in FIGS. 4, 5 and 6, a resonator with four coaxial attacks, an appropriate excitation for each band as shown in Figures 7, 8 and 9, but it can also include more than two resonators for each band: three, four ...
  • resonators are not necessarily circular in shape: they can have any shape: circular, square, hexagonal, or have notches or asymmetrical accidents. They may also have recesses (non-metallized surfaces) of any shape within their outline.
  • dielectric layers 20, 21 and 23 for supporting these resonators 12, 13, 22 and 24 can be partially or totally replaced by other types of supports (spacers, columns) of any material (conductor or insulator) known from the skilled in the art.
  • these resonators can be extended out of their plan or in their plane by metal parts which may or may not come into electrical contact with the wall of the guide.
  • the guides used can be circular, square, but also hexagonal, polygonal, elliptical or other. They can present accidents such as excess thickness or furrows in the horizontal, oblique or transverse direction, or present local accidents such as pawns, iris, slots. They can also be globally or locally flared or narrowed, or both successively, according to a determined law for example.
  • the device of the invention can be powered by two, by four but also by a greater number of accesses, which can be connected to the first resonators 12 and 13, but also to the other resonators 22, 24 ...

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (9)

  1. In zwei Frequenzbereichen strahlende Einrichtung mit zwei strahlenden Elementen (10, 11) und einer Diskontinuität, wobei das erste strahlende Element (10) ein Wellenleiter (10) ist, der in einem ersten Frequenzband angeregt wird und in das zweite strahlende Element (11) mündet, das gemäß einem zweiten Frequenzband angeregt wird, wobei diese beiden strahlenden Elemente (10, 11) die gleiche Symmetrieachse besitzen und eine gemeinsame strahlende Öffnung und wobei das erste Frequenzband höher als das zweite Frequenzband liegt, dadurch gekennzeichnet, daß das erste strahlende Element (10) jenseits des cut-off gegenüber dem zweiten Frequenzband betrieben wird, um die Entkopplung zwischen den von diesen beiden Elementen (10, 11) abgestrahlten Signalen zu gewährleisten, und daß das strahlende Element weiter eine erste und eine zweite Quelle (12, 13) aufweist, wobei das erste strahlende Element (10) ein von der ersten Quelle in Form einer Resonanzplatte (12) angeregter Wellenleiter ist, während das zweite strahlende Element (11) ein von der zweiten Quelle in Form eines Resonanzringes (13) angeregter Wellenleiter ist, wobei der zentrale Bereich dieses Resonanzrings mit dem ersten Wellenleiter (10) elektrisch verbunden ist, der Resonanzring (13) einen Rand des ersten Wellenleiters (10) bildet und die Polarisation linear oder zirkular ist.
  2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die von der Resonanzplatte (12) bzw. dem Resonanzring (13) gebildeten Antennen von koaxialen Leiterstücken (14, 15, 16, 17) gespeist werden.
  3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß für jede Antenne (12, 13) die angepaßten koaxialen Leiterstücke (14, 15; 16, 17) zueinander bezüglich des Zentrums der Wellenleiter um 90° versetzt sind, wobei jedes koaxiale Leiterstück in Phasenquadratur von einem Hybridkoppler (18, 19) gespeist wird.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Antenne (12) für die höheren Frequenzen gegenüber dem Boden des ihm zugeordneten Wellenleiters (10) durch ein Dielektrikum (20) getrennt ist und daß die Antenne (13) für die niedrigeren Frequenzen gegenüber dem Boden des ihr zugeordneten Wellenleiters (11) durch ein Dielektrikum (21) getrennt ist.
  5. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Antennen aus einem doppelten Resonator bestehen, wodurch das Durchlaßband der Einrichtung vergrößert wird.
  6. Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der erste Wellenleiter (10) für die höheren Frequenzen über zwei konzentrische Scheiben (12 und 22) angeregt wird, die durch ein Dielektrikum (23) auf Abstand gehalten werden, und daß der zweite Wellenleiter (10) für die niedrigeren Frequenzen durch zwei konzentrische Ringe (13 und 24) angeregt wird, die Teile des Wellenleiters sind.
  7. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mindestens eine der beiden Antennen aus einem einfachen Resonator besteht, der von vier in Quadratur gespeisten koaxialen Leiterstücken (25, 26, 27, 28; 30, 31, 32, 33) angeregt wird.
  8. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das zweite strahlende Element ein ebenes Netz (40) ist.
  9. In zwei Frequenzbereichen arbeitendes Antennennetz, bestehend aus einer Mehrzahl von in zwei Frequenzbereichen arbeitenden strahlenden Einrichtungen gemäß einem beliebigen der vorhergehenden Ansprüche.
EP89123208A 1988-12-26 1989-12-15 Doppelfrequenz strahlende Vorrichtung Expired - Lifetime EP0377155B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817184A FR2641133B1 (de) 1988-12-26 1988-12-26
FR8817184 1988-12-26

Publications (2)

Publication Number Publication Date
EP0377155A1 EP0377155A1 (de) 1990-07-11
EP0377155B1 true EP0377155B1 (de) 1994-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123208A Expired - Lifetime EP0377155B1 (de) 1988-12-26 1989-12-15 Doppelfrequenz strahlende Vorrichtung

Country Status (6)

Country Link
US (1) US5001444A (de)
EP (1) EP0377155B1 (de)
JP (1) JP2953721B2 (de)
CA (1) CA2006291C (de)
DE (1) DE68918426T2 (de)
FR (1) FR2641133B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668305B1 (fr) * 1990-10-18 1992-12-04 Alcatel Espace Dispositif d'alimentation d'un element rayonnant fonctionnant en double polarisation.
JP2526537B2 (ja) * 1991-08-30 1996-08-21 日本電装株式会社 配管内エネルギ―供給システム
US5276457A (en) * 1992-02-14 1994-01-04 E-Systems, Inc. Integrated antenna-converter system in a unitary package
US5434585A (en) * 1992-11-20 1995-07-18 Gardiner Communications, Inc. Microwave antenna having a ground isolated feedhorn
TW344152B (en) * 1995-07-19 1998-11-01 Alps Electric Co Ltd Outdoor converter for receiving satellite broadcast
US6078297A (en) * 1998-03-25 2000-06-20 The Boeing Company Compact dual circularly polarized waveguide radiating element
US8081062B2 (en) * 2005-09-29 2011-12-20 Electronics And Telecommunications Research Institute Transmit/receive antenna system having offset feed points for high isolation
US7636063B2 (en) * 2005-12-02 2009-12-22 Eswarappa Channabasappa Compact broadband patch antenna
US8102330B1 (en) * 2009-05-14 2012-01-24 Ball Aerospace & Technologies Corp. Dual band circularly polarized feed
US8427382B2 (en) * 2010-07-29 2013-04-23 Raytheon Company Power combiner/divider for coupling N-coaxial input/outputs to a waveguide via a matching plate to provide minimized reflection
US9774069B2 (en) 2015-09-15 2017-09-26 Raytheon Company N-way coaxial-to-coaxial combiner/divider

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118848B1 (de) * 1970-12-22 1974-03-22 Thomson Csf
US3731235A (en) * 1971-11-03 1973-05-01 Gte Sylvania Inc Dual polarized diplexer
US3864687A (en) * 1973-06-18 1975-02-04 Cubic Corp Coaxial horn antenna
FR2429504A1 (fr) * 1978-06-19 1980-01-18 France Etat Doublet et antenne en plaques a polarisation circulaire
US4434425A (en) * 1982-02-02 1984-02-28 Gte Products Corporation Multiple ring dipole array
FR2593644B1 (fr) * 1986-01-28 1988-03-11 Alcatel Espace Dispositif duplexeur de polarisation et de frequences a trois acces.
DE3634772A1 (de) * 1986-09-08 1988-03-17 Kabelmetal Electro Gmbh Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender

Also Published As

Publication number Publication date
US5001444A (en) 1991-03-19
CA2006291C (fr) 1994-02-08
FR2641133B1 (de) 1991-05-17
DE68918426T2 (de) 1995-01-19
JPH02222203A (ja) 1990-09-05
FR2641133A1 (de) 1990-06-29
CA2006291A1 (fr) 1990-06-26
JP2953721B2 (ja) 1999-09-27
DE68918426D1 (de) 1994-10-27
EP0377155A1 (de) 1990-07-11

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