EP0898323A3 - Polarisation branch for two different frequency bands - Google Patents

Polarisation branch for two different frequency bands Download PDF

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Publication number
EP0898323A3
EP0898323A3 EP98401839A EP98401839A EP0898323A3 EP 0898323 A3 EP0898323 A3 EP 0898323A3 EP 98401839 A EP98401839 A EP 98401839A EP 98401839 A EP98401839 A EP 98401839A EP 0898323 A3 EP0898323 A3 EP 0898323A3
Authority
EP
European Patent Office
Prior art keywords
waveguide
section
same
flat
rectangular cross
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Withdrawn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
EP98401839A
Other languages
German (de)
French (fr)
Other versions
EP0898323A2 (en
Inventor
Udo Dipl.-Ing. Seewig
Reimer Dr.-Ing. Nagel
Daniel Dr.-Ing. Wojtkowiak
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 CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel 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 CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0898323A2 publication Critical patent/EP0898323A2/en
Publication of EP0898323A3 publication Critical patent/EP0898323A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

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

Abstract

Es wird eine Polarisationsweiche für zwei unterschiedliche Frequenzbänder zur Ausleuchtung einer Antenne mit parabolischem Reflektor angegeben. Sie besteht aus einem Hohlleiterabschnitt, in welchem pro Frequenzband zwei senkrecht aufeinander stehende, linear polarisierte Wellen führbar sind. Pro Frequenzband sind zwei Hohlleiter mit rechteckigem Querschnitt getrennt voneinander und in Achsrichtung des Hohlleiterabschnitts gegeneinander versetzt an denselben angeschlossen. Für das höhere Frequenzband ist jeder der beiden Hohlleiter ab einer Anschlußstelle (11, 12) in zwei Arme (18, 19, 24, 25) mit gleichem, rechteckigem Querschnitt aufgeteilt, die an zwei einander diametral gegenüber liegenden Stellen in den Hohlleiterabschnitt einmünden. Sie sind jeweils durch einen einteiligen Flachhohlleiter (F1, F2) mit rechteckigem Querschnitt gebildet, der an beiden Enden an die Polarisationsweiche (W) angeschlossen ist. Mit gleicher Enffernung zu den Enden des Flachhohlleiters (F1, F2) ist jeweils ein geradliniges Hohlleiterstück (20, 26) mit gleichem rechteckigem Querschnitt wie der Flachhohlleiter (F1, F2) mit seiner einen Stirnseite an einer Schmalseite desselben befestigt, das in der gleichen Ebene wie der Flachhohlleiter (F1, F2) rechtwinklig von demselben absteht und an dessen freiem Ende der jeweilige Hohlleiter anschließbar ist. In der Wandung des Flachhohlleiters (F1, F2) ist jeweils eine der reflexionsarmen Anpassung dienende Blende angebracht, die vom Hohlleiterstück (20, 26) symmetrisch umschlossen ist. Außerdem ist in der Verlängerung des Hohlleiterstückes (20, 26) symmetrisch zur Blende jeweils ein metallischer Stift im Flachhohlleiter (F1, F2) angebracht, der parallel zu den Schmalseiten desselben über seine ganze Höhe verläuft und einen Abstand von der der Blende gegenüber liegenden Wandung des Flachhohlleiters (F1, F2) hat, der gleich einem Viertel der mittleren Wellenlänge der vom angeschlossenen Hohlleiter geführten Wellen ist.

Figure 00000001
A polarization filter is specified for two different frequency bands for illuminating an antenna with a parabolic reflector. It consists of a waveguide section in which two linearly polarized waves perpendicular to each other can be guided per frequency band. For each frequency band, two waveguides with a rectangular cross-section are separated from one another and offset from one another in the axial direction of the waveguide section. For the higher frequency band, each of the two waveguides from a connection point (11, 12) is divided into two arms (18, 19, 24, 25) with the same rectangular cross section, which open into the waveguide section at two diametrically opposite points. They are each formed by a one-piece flat waveguide (F1, F2) with a rectangular cross-section, which is connected at both ends to the polarization switch (W). With the same distance to the ends of the flat waveguide (F1, F2), a straight waveguide section (20, 26) with the same rectangular cross section as the flat waveguide (F1, F2) is fastened with its one end face to a narrow side of the same, in the same plane how the flat waveguide (F1, F2) protrudes from it at right angles and at the free end of which the respective waveguide can be connected. In the wall of the flat waveguide (F1, F2) there is in each case a diaphragm which serves for low-reflection adaptation and is symmetrically enclosed by the waveguide section (20, 26). In addition, a metallic pin in the flat waveguide (F1, F2) is attached in the extension of the waveguide piece (20, 26) symmetrically to the diaphragm, which runs parallel to the narrow sides of the same over its entire height and a distance from the wall of the diaphragm opposite Flat waveguide (F1, F2), which is equal to a quarter of the average wavelength of the waves guided by the connected waveguide.
Figure 00000001
EP98401839A 1997-08-16 1998-07-20 Polarisation branch for two different frequency bands Withdrawn EP0898323A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19735547 1997-08-16
DE19735547A DE19735547A1 (en) 1997-08-16 1997-08-16 Polarization crossover for two different frequency bands

Publications (2)

Publication Number Publication Date
EP0898323A2 EP0898323A2 (en) 1999-02-24
EP0898323A3 true EP0898323A3 (en) 2000-04-05

Family

ID=7839166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401839A Withdrawn EP0898323A3 (en) 1997-08-16 1998-07-20 Polarisation branch for two different frequency bands

Country Status (5)

Country Link
US (1) US6150899A (en)
EP (1) EP0898323A3 (en)
AU (1) AU742126B2 (en)
BR (1) BR9803749A (en)
DE (1) DE19735547A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3908071B2 (en) * 2002-04-02 2007-04-25 三菱電機株式会社 Rotary joint
ES2362761B1 (en) * 2009-04-28 2012-05-23 Ferox Comunications, S.L. MULTIPLEXOR OF CROSSED POLARIZATION.
US8334815B2 (en) * 2009-07-20 2012-12-18 Kvh Industries, Inc. Multi-feed antenna system for satellite communications
WO2019226201A2 (en) * 2017-12-20 2019-11-28 Optisys, LLC Integrated linearly polarized tracking antenna array

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096461A2 (en) * 1982-06-04 1983-12-21 Andrew A.G. Microwave systems
US4956622A (en) * 1986-05-29 1990-09-11 National Research Development Corporation Waveguide H-plane junctions

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274604A (en) * 1958-12-12 1966-09-20 Bernard L Lewis Multi-mode simultaneous lobing antenna
DE2517383C3 (en) * 1975-04-19 1979-03-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt System crossover for dual use of frequencies
US4467294A (en) * 1981-12-17 1984-08-21 Vitalink Communications Corporation Waveguide apparatus and method for dual polarized and dual frequency signals
JPS59131201A (en) * 1983-08-04 1984-07-28 Nec Corp Converter of wide band mode
FR2593644B1 (en) * 1986-01-28 1988-03-11 Alcatel Espace POLARIZATION AND FREQUENCY DUPLEXER DEVICE WITH THREE ACCESSES.
GB2188493A (en) * 1986-03-27 1987-09-30 Era Patents Ltd Orthogonal mode transducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096461A2 (en) * 1982-06-04 1983-12-21 Andrew A.G. Microwave systems
US4956622A (en) * 1986-05-29 1990-09-11 National Research Development Corporation Waveguide H-plane junctions

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BOIFOT A M: "CLASSIFICATION OF ORTHO-MODE TRANSDUCERS", EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS AND RELATED TECHNOLOGIES,IT,AEI, MILANO, vol. 2, no. 5, pages 35-42, XP000266379, ISSN: 1120-3862 *
DAS B N ET AL: "A RIGOROUS VARIATIONAL FORMULATION OF AN H PLANE SLOT-COUPLED TEE JUNCTION", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,US,IEEE INC. NEW YORK, vol. 38, no. 1, pages 93-95, XP000142212, ISSN: 0018-9480 *
MA Z ET AL: "EFFICIENT CHARACTERIZATION OF COMPLEX H-PLANE WAVEGUIDE PI-JUNCTIONAND CROSS-JUNCTIONS", IEICE TRANSACTIONS ON ELECTRONICS,JP,INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, vol. E79-C, no. 3, pages 444-452, XP000594520, ISSN: 0916-8524 *

Also Published As

Publication number Publication date
EP0898323A2 (en) 1999-02-24
DE19735547A1 (en) 1999-02-18
BR9803749A (en) 1999-12-21
AU742126B2 (en) 2001-12-20
US6150899A (en) 2000-11-21
AU7989798A (en) 1999-02-25

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