EP0377155A1 - Doppelfrequenz strahlende Vorrichtung - Google Patents

Doppelfrequenz strahlende Vorrichtung Download PDF

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Publication number
EP0377155A1
EP0377155A1 EP89123208A EP89123208A EP0377155A1 EP 0377155 A1 EP0377155 A1 EP 0377155A1 EP 89123208 A EP89123208 A EP 89123208A EP 89123208 A EP89123208 A EP 89123208A EP 0377155 A1 EP0377155 A1 EP 0377155A1
Authority
EP
European Patent Office
Prior art keywords
excited
waveguide
coaxial
radiating
guide
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.)
Granted
Application number
EP89123208A
Other languages
English (en)
French (fr)
Other versions
EP0377155B1 (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
Original Assignee
Alcatel Espace Industries 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 Alcatel Espace Industries SA filed Critical Alcatel Espace Industries SA
Publication of EP0377155A1 publication Critical patent/EP0377155A1/de
Application granted granted Critical
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 known art relates to a microwave rotary joint device, comprising a main circular guide made up of two parts located in the extension one of the other and movable in rotation with respect 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.
  • the object of the device of the invention is to overcome these disadvantages.
  • the device of the invention proposes, in fact, a dual-frequency radiating device using two radiating elements and a discontinuity, the first radiating element being a waveguide, 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, characterized in that the first frequency range is greater than the second frequency range, in that the first radiating element is cut off with respect to ia second frequency range to ensure decoupling between the signals radiated by these two elements and in that these two signals have the same radiating opening.
  • such an element has the following characteristics: - It is extremely compact; circular polarization is here directly generated from a TEM line over a length less than a wavelength. - it is provided with longitudinal rear access; which makes it possible to couple these accesses, without additional coaxial cables, to a transmission power distributor TEM and / or reception parallel to the section of the guide, place where hybrid quadrature coupling couplers can also be installed. - It can be used on any antenna with circular polarization where there is a problem of compactness or size for the polarization device. - The equivalent surfaces are identical in each frequency band since they are waveguides supplied in fundamental mode.
  • the device of the invention as shown in Figures l, 2 and 3 is constituted by 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 located 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.
  • the dimension of the second waveguide 11 is calculated so that: - at low frequencies only the fundamental mode can propagate, - at high frequencies, only non-excitable modes can propagate:
  • the TM 11 mode is cut off at high frequency in the second guide 11, so it does not harm the radiation from the opening of the guide.
  • the TM 01 mode can propagate, but is not excitable given the symmetry of revolution of the discontinuities.
  • the device of the invention can be used, as shown in FIG. 1, with the following dimensions: .
  • distance between each of the coaxial attacks 16 and 17 and the center of the resonator 13 of circular shape approximately 22 mm; - thickness of the dielectric 21: approximately 3.3 mm; - thickness of the resonator 13: approximately 0.6 mm; - diameter of the resonator 13, in the form of a circular ring: approximately 52 mm for external diameter and approximately 25 mm for internal diameter; - diameter of the guide 11, of cylindrical shape: about 53.5 mm.
  • low frequency radiating element - frequency band: 1.9% (example 4160 MHZ - 4240 MHZ); - TOS adaptation in this band ⁇ 1.2; - decoupling of coaxial attacks ⁇ -20dB; - ellipticity with appropriate hybrid coupler ⁇ 0.5dB.
  • one, the other or the two 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 the spacing.
  • one or the other or the two 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 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 may 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 replaced partially or totally 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 supplied 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)
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
FR8817184 1988-12-26
FR8817184A FR2641133B1 (de) 1988-12-26 1988-12-26

Publications (2)

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

Family

ID=9373421

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556941A1 (de) * 1992-02-14 1993-08-25 E-Systems Inc. Antenne und Mikrowellenumsetzer, in einer Schaltungspackung integriert

Families Citing this family (10)

* 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
US5434585A (en) * 1992-11-20 1995-07-18 Gardiner Communications, Inc. Microwave antenna having a ground isolated feedhorn
GB2303496B (en) * 1995-07-19 1999-11-17 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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118848A1 (de) * 1970-12-22 1972-08-04 Thomson Csf
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
FR2603742A1 (fr) * 1986-09-08 1988-03-11 Kabelmetal Electro Gmbh Excitateur d'antenne pour au moins deux bandes de frequence differentes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731235A (en) * 1971-11-03 1973-05-01 Gte Sylvania Inc Dual polarized diplexer
FR2593644B1 (fr) * 1986-01-28 1988-03-11 Alcatel Espace Dispositif duplexeur de polarisation et de frequences a trois acces.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118848A1 (de) * 1970-12-22 1972-08-04 Thomson Csf
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
FR2603742A1 (fr) * 1986-09-08 1988-03-11 Kabelmetal Electro Gmbh Excitateur d'antenne pour au moins deux bandes de frequence differentes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556941A1 (de) * 1992-02-14 1993-08-25 E-Systems Inc. Antenne und Mikrowellenumsetzer, in einer Schaltungspackung integriert

Also Published As

Publication number Publication date
US5001444A (en) 1991-03-19
CA2006291A1 (fr) 1990-06-26
DE68918426T2 (de) 1995-01-19
CA2006291C (fr) 1994-02-08
EP0377155B1 (de) 1994-09-21
FR2641133B1 (de) 1991-05-17
JPH02222203A (ja) 1990-09-05
FR2641133A1 (de) 1990-06-29
DE68918426D1 (de) 1994-10-27
JP2953721B2 (ja) 1999-09-27

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