EP0045682B1 - Speiseanordnung für eine Sende/Empfangsantenne - Google Patents

Speiseanordnung für eine Sende/Empfangsantenne Download PDF

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Publication number
EP0045682B1
EP0045682B1 EP81401188A EP81401188A EP0045682B1 EP 0045682 B1 EP0045682 B1 EP 0045682B1 EP 81401188 A EP81401188 A EP 81401188A EP 81401188 A EP81401188 A EP 81401188A EP 0045682 B1 EP0045682 B1 EP 0045682B1
Authority
EP
European Patent Office
Prior art keywords
polarization
duplexer
frequency band
openings
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
Application number
EP81401188A
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English (en)
French (fr)
Other versions
EP0045682A1 (de
Inventor
Nhu Bui Hai
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.)
Thales SA
Original Assignee
Thomson CSF SA
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Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to AT81401188T priority Critical patent/ATE9521T1/de
Publication of EP0045682A1 publication Critical patent/EP0045682A1/de
Application granted granted Critical
Publication of EP0045682B1 publication Critical patent/EP0045682B1/de
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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
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2131—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies with combining or separating polarisations

Definitions

  • the purpose of the invention is to significantly reduce the above drawbacks.
  • FIGS 1 and 2 are respectively a side diagram and a top diagram of an antenna transducer, the internal elements of which are shown by transparency.
  • This antenna transducer is designed to allow the operation of an antenna in transmission and in reception with a single access, E, for the transmission, a single access, R, for the reception and a common access, A, intended for be coupled to the primary source of an antenna by a polarizer.
  • the first polarization duplexer, 1, has a body constituted by a cylindrical guide, 10, with an internal diameter of 54 mm, one end of which constitutes the common access A and the other end of which is connected to the transition element 2.
  • This guide has two lateral polarization openings, constituted by rectangular holes of 7 mm by 58 mm, drilled in its wall, at the same level but at 90 ° from each other.
  • Two rectangular guides, 11, 12, of 7 mm by 58 mm open into these openings; they comprise adjustment adjustment screws, such as 18 and 19 and, at their end where they terminate in the cylindrical guide 10, a pair (16a, 16b) of resonant dipoles; these dipoles consist of metallic "T" s with a 10 mm horizontal bar.
  • the guide 12 has its end opposite to the cylindrical guide which constitutes the reception access, R, of the antenna transducer.
  • a resistive load 17 of conventional type is placed in the guide 11, at the end opposite to the cylindrical guide 10, a resistive load 17 of conventional type is placed; in the case of the example described, this charge is made of a material sold under the brand DISARAL.
  • FIG. 3 shows in particular how the filter 13 is mounted: this filter consists of a crossed metal dipole, 13b, deposited on a support dielectric, 13a, made of beryllium oxide, integral with the wall of the cylindrical guide 10 and perpendicular to the direction of propagation of the waves in this guide 10.
  • the dipole 13b has an overall dimension of .26 mm.
  • the transition element 2 is a guide in a circular truncated cone, the maximum internal diameter of which is 54 mm and the minimum internal diameter of 34 mm.
  • the second polarization duplexer according to FIGS. 1 and 2 has a body constituted by a cylindrical guide, 30, with an internal diameter of 34 mm.
  • Two rectangular openings of 35 mm by 16 mm are drilled at 90 ° from each other in the side wall of the cylindrical guide 30.
  • In these openings terminate two rectangular guides, 31, 32, the internal section of which is 35 mm by 16 mm; the walls of the guides 31, 32 are crossed by adjustment adjustment screws, such as 34, 35.
  • a resistive load, 33, of the same type as the resistive load 17 is placed in the guide 32, on the side of the end of this guide opposite to the cylindrical guide 30.
  • the end of the guide 31 opposite the opening of the cylindrical guide 30 constitutes the emission access, E, of the transducer.
  • the antenna transducer according to FIGS. 1 and 2 is designed to operate in transmission with a frequency band included in the 6 GHz band (that is to say the band going from 5.925 to 6.425 GHz) and in reception with a frequency band in the 4 GHz band (i.e. the band from 3.7 to 4.2 GHz).
  • This antenna transducer operates as shown below.
  • the quasi-optical filters 13, 14, 15 have been designed to behave like short circuits for "reception” waves (4 GHz) and to let “emission” waves (6 GHz) pass.
  • the first short-circuit plane being placed 19 mm from the opening where the guide 12 terminates, that is to say approximately ⁇ / 4 ( ⁇ : average wavelength in the reception band), the energy of the "reception” waves reflected by this short circuit is summed in phase, when it arrives in the guide 12, with the energy "reception” which arrives directly in this guide, the path difference being in fact twice JL / 4 or ⁇ / 2.
  • the “T” dipoles, placed in the lateral openings of the guide 10 are calculated to resonate at the average emission frequency, they therefore constitute short circuits for the "emission” waves. These dipoles thus make it possible to perfect the emission-reception decoupling of the quasi-optical filters by letting the "reception” waves pass and by rejecting the "emission” waves.
  • the load 17 it plays the role of a "mode absorber” for the cross polarization with respect to that received, due to parasitic reflections.
  • transition element "round guide-round guide", 2 allows a gradual passage from the section of the polarization duplexer 1 to the section of the polarization duplexer 3.
  • the resistive load 33 placed in the lateral guide 32 of the polarization duplexer 3 plays the role of a "mode absorber" for the polarization crossed with respect to that emitted.
  • This cross polarization arises by parasitic reflections at the level of the radiating part of the antenna: on the sub-reflector in the case, for example, of a Cassegrain antenna and at the level of the antenna horn.
  • the transmitted wave initially rectilinear in the polarization duplexer 3 becomes circular, for example right circular after passing through the polarization coupling to the antenna, then is transformed into left circular polarization after reflection. It then returns to the polarizer and returns to the polarization duplexer 1 with a reverse polarization from its original polarization.
  • This reverse polarization wave if it was not absorbed by the resistive load 17, would deteriorate the ellipticity rate because it would be reflected on the short circuit formed by the optical-quay filters and would be sent to the radiating part of the antenna with a certain phase shift on the original wave.
  • the transducer In combination with a polarizer and a horn with a low ellipticity rate, that is to say much less than 0.5 dB, the transducer which has just been described makes it possible to obtain a primary source with high purity of polarization. : less than 0.5 db.
  • This transducer was initially designed for antennas of earth stations of the Cassegrain type or with illumination by the hearth, these antennas being able to be moreover with symmetry of revolution or not.
  • FIG. 5 shows such an antenna.
  • FIG. 5 schematically shows a Cassegrain antenna with symmetry of revolution, seen in section, with its horn 40, its hyperboloidal sub-reflector 41 and its main reflector 42 of paraboloidal shape; a polarizer 43, the role of which is to transform a field with rectilinear polarization into a field with circular polarization and vice versa, couples the radiating part of the antenna, 40, 41, 42, to an antenna transducer, 44, according to Figures 1 and 2.
  • FIG. 4 Another embodiment of an antenna transducer according to the invention is given in FIG. 4.
  • the antenna transducer shown in this figure is an antenna transducer with two transmission ports E ,, E z and two pairs reception access R, R '"R 2 R' 2 .

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Aerials With Secondary Devices (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Burglar Alarm Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Support Of Aerials (AREA)

Claims (5)

1. Antennenwandler, der hintereinandergeschaltet einen ersten Polarisationsduplexer (1) zum Betrieb in einem ersten Frequenzband, ein Übergangselement (2), das aus einem Leiter mit variablem Querschnitt gebildet ist, und einen zweiten Polarisationsduplexer (3) enthält, der zum Betrieb in einem zweiten Frequenzband bestimmt ist, wobei der erste Polarisationsduplexer einen Hauptwellenleiter (10) mit einem ersten Ende (A) zum Ankoppeln an den strahlenden Teil einer Antenne, einem zweiten, an das Übergangselement (2) angekoppelten Ende und zwei seitlichen Polarisationsöffnungen sowie zwei Hilfsleiter (11, 12) umfaßt, die jeweils in eine der zwei seitlichen Öffnungen einmünden, dadurch gekennzeichnet, daß der Hauptwellenleiter des ersten Duplexers als seitliche Polarisationsöffnungen allein die zwei seitlichen Polarisationsöffnungen enthält, daß Dipole (16a, 16b), welche bei der mittleren Frequenz des zweiten Frequenzbandes in Resonanz sind, in den zwei seitlichen Öffnungen angeordnet sind, daß eine resistive Last (17) in einem der zwei Hilfsleiter angeordnet ist, daß eine Gruppe (13, 14, 15) von n Filtern (n ganzzahlig und wenigstens gleich 1) in dem Hauptwellenleiter des ersten Polarisationsduplexers zwischen dem zweiten Ende und den zwei seitlichen Öffnungen in einem Abstand von den zwei seitlichen Öffnungen angeorndet ist, der ungefähr A/4 beträgt (λ.: mittlere Wellenlänge in dem ersten Frequenzband), und daß die n Filter einen Kurzschluß für das erste Frequenzband bilden.
2. Antennenwandler nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Polarisationsduplexer (3) einen Hauptwellenleiter (30) mit zwei Polarisationsöffnungen und zwei Hilfsleiter (31, 32) umfaßt, die jeweils in einer von den zwei Polarisationsöffnungen des Hauptwellenleiters des zweiten Duplexers münden, wobei eine resistive Last (33) in einem der zwei Hilfsleiter (32) des zweiten Duplexers angeordnet ist, während der andere dieser zwei Hilfsleiter (31, 32) des zweiten Duplexers als Anschluß (E) für die Wellen des zweiten Frequenzbandes dient.
3. Antennenwandler nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Filter quasioptische Filter sind, die jeweils durch einen metallischen Dipol (13b) gebildet sind, welcher auf einem ebenen dielektrischen Träger (13a) aufgebracht ist, der in dem Hauptwellenleiter (10) des ersten Polarisationsduplexers angeordnet ist, und zwar senkrecht zur Ausbreitungsrichtung der Wellen in dem Hauptwellenleiter des ersten Polarisationsduplexers.
4. Antennenwandler, der in Reihe geschaltet einen ersten Polarisationsduplexer (1) für den Betrieb in einem ersten Frequenzband, ein Übergangselement (2), das aus einem Leiter mit variablem Querschnitt gebildet ist, und einen zweiten Polarisationsduplexer (3) für den Betrieb in einem zweiten Frequenzband enthält, wobei der erste Polarisationsduplexer einen Hauptwellenleiter (10) mit einem ersten Ende (A) zum Ankoppeln an den strahlenden Teil einer Antenne, einem zweiten, an das Übergangselement angekoppelten Ende und vier seitlichen Polarisationsöffnungen aufweist, dadurch gekennzeichnet, daß Dipole (16a, 16b, 1 6d), die bei der mittleren Frequenz des zweiten Frequenzbandes in Resonanz sind, in den seitlichen Öffnungen angeordnet sind, daß eine Gruppe (13, 14, 15) von n Filtern (n ganzzahlig und wenigstens gleich 1) in dem ersten Polarisationsduplexer zwischen den vier seitlichen Öffnungen und dem zweiten Ende in einem Abstand von den vier seitlichen Öffnungen angeordnet ist, der ungefähr Ä/4 beträgt (A: mittlere Wellenlänge in dem ersten Frequenzband), und daß die n Filter einen Kurzschluß für das erste Frequenzband bilden.
5. Antennenwandler nach Anspruch 4, dadurch gekennzeichnet, daß die Filter quasioptische Filter sind, die jeweils durch einen metallischen Dipol (13b) gebildet sind, welcher auf einem ebenen dielektrischen Träger (13a) aufgebracht ist, der in dem Hauptwellenleiter (10) des ersten Polarisationsduplexers senkrecht zur Ausbreitungsrichtung der Wellen in dem Hauptwellenleiter des ersten Polarisationsduplexers angeordnet ist.
EP81401188A 1980-07-31 1981-07-24 Speiseanordnung für eine Sende/Empfangsantenne Expired EP0045682B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81401188T ATE9521T1 (de) 1980-07-31 1981-07-24 Speiseanordnung fuer eine sende/empfangsantenne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8016920 1980-07-31
FR8016920A FR2488055A1 (fr) 1980-07-31 1980-07-31 Transducteur d'antenne pour antenne d'emission-reception et source primaire d'antenne equipee d'un tel transducteur

Publications (2)

Publication Number Publication Date
EP0045682A1 EP0045682A1 (de) 1982-02-10
EP0045682B1 true EP0045682B1 (de) 1984-09-19

Family

ID=9244753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401188A Expired EP0045682B1 (de) 1980-07-31 1981-07-24 Speiseanordnung für eine Sende/Empfangsantenne

Country Status (6)

Country Link
US (1) US4410866A (de)
EP (1) EP0045682B1 (de)
JP (1) JPS5753103A (de)
AT (1) ATE9521T1 (de)
DE (1) DE3166182D1 (de)
FR (1) FR2488055A1 (de)

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FR2502405A1 (fr) * 1981-03-18 1982-09-24 Portenseigne Systeme de reception de signaux hyperfrequences a polarisations orthogonales
JPS5857803A (ja) * 1981-09-30 1983-04-06 Nippon Telegr & Teleph Corp <Ntt> 一次放射器
IT1155664B (it) * 1982-03-25 1987-01-28 Sip Dispositivo di guida d onda per la separazione di segnali a radiofrequenza di diversa frequenza e polarizzazione
US4504805A (en) * 1982-06-04 1985-03-12 Andrew Corporation Multi-port combiner for multi-frequency microwave signals
FR2529392B1 (fr) * 1982-06-25 1985-06-28 Thomson Csf Dispositif de multiplexage pour grouper deux bandes de frequences et multiplexeur comportant un tel dispositif
JPS5927601U (ja) * 1982-08-13 1984-02-21 日本電気株式会社 直交偏分波器
JPS59117303A (ja) * 1982-12-23 1984-07-06 Nec Corp 偏分波器
US4491810A (en) * 1983-01-28 1985-01-01 Andrew Corporation Multi-port, multi-frequency microwave combiner with overmoded square waveguide section
DE3439413A1 (de) * 1984-10-27 1986-04-30 kabelmetal electro GmbH, 3000 Hannover Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender
DE3439414A1 (de) * 1984-10-27 1986-04-30 kabelmetal electro GmbH, 3000 Hannover Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender
DE3439416A1 (de) * 1984-10-27 1986-04-30 kabelmetal electro GmbH, 3000 Hannover Antennenerreger
US4783639A (en) * 1985-11-21 1988-11-08 Hughes Aircraft Company Wideband microwave diplexer including band pass and band stop resonators
FR2593644B1 (fr) * 1986-01-28 1988-03-11 Alcatel Espace Dispositif duplexeur de polarisation et de frequences a trois acces.
FR2598034B1 (fr) * 1986-04-28 1988-08-26 Alcatel Espace Dispositif a joint tournant hyperfrequence
DE3634772A1 (de) * 1986-09-08 1988-03-17 Kabelmetal Electro Gmbh Antennenerreger fuer mindestens zwei unterschiedliche frequenzbaender
JPS6464401A (en) * 1987-09-04 1989-03-10 Nec Corp Axial ratio compensator
JPH046601U (de) * 1990-05-02 1992-01-22
DE69115783T2 (de) * 1990-07-26 1996-07-25 Loral Space Systems Inc Zweibandantenne mit Mehrfachausnutzung der Frequenzbänder
US5162808A (en) * 1990-12-18 1992-11-10 Prodelin Corporation Antenna feed with selectable relative polarization
US5959591A (en) * 1997-08-20 1999-09-28 Sandia Corporation Transverse electromagnetic horn antenna with resistively-loaded exterior surfaces
US6727776B2 (en) 2001-02-09 2004-04-27 Sarnoff Corporation Device for propagating radio frequency signals in planar circuits
US6943744B1 (en) 2003-07-09 2005-09-13 Patriot Antenna Systems, Inc. Waveguide diplexing and filtering device
US7469131B2 (en) * 2004-09-14 2008-12-23 Nokia Corporation Terminal and associated transducer assembly and method for selectively transducing in at least two frequency bands
CN101110491B (zh) * 2006-07-19 2011-02-16 上海杰盛无线通讯设备有限公司 数字微波室外单元中双工器
JP6355525B2 (ja) * 2014-10-29 2018-07-11 三菱電機株式会社 偏波分離回路
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Also Published As

Publication number Publication date
DE3166182D1 (en) 1984-10-25
US4410866A (en) 1983-10-18
ATE9521T1 (de) 1984-10-15
EP0045682A1 (de) 1982-02-10
JPS6355801B2 (de) 1988-11-04
JPS5753103A (en) 1982-03-30
FR2488055A1 (fr) 1982-02-05
FR2488055B1 (de) 1984-07-13

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