EP0178259A2 - Waveguide with a primary radiator - Google Patents

Waveguide with a primary radiator Download PDF

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Publication number
EP0178259A2
EP0178259A2 EP85810454A EP85810454A EP0178259A2 EP 0178259 A2 EP0178259 A2 EP 0178259A2 EP 85810454 A EP85810454 A EP 85810454A EP 85810454 A EP85810454 A EP 85810454A EP 0178259 A2 EP0178259 A2 EP 0178259A2
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EP
European Patent Office
Prior art keywords
waveguide
waveguide according
septum
radiator
filter
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Withdrawn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
EP85810454A
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German (de)
French (fr)
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EP0178259A3 (en
Inventor
Anton Studach
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.)
Huber and Suhner AG
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Huber and Suhner AG
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Publication date
Application filed by Huber and Suhner AG filed Critical Huber and Suhner AG
Publication of EP0178259A2 publication Critical patent/EP0178259A2/en
Publication of EP0178259A3 publication Critical patent/EP0178259A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/24—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/165—Auxiliary devices for rotating the plane of polarisation
    • H01P1/17—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation
    • H01P1/173—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a conductive element

Definitions

  • the present invention relates to a waveguide with a primary radiator according to the preamble of independent claim 1.
  • This waveguide 10 is formed by a septum 11 from a carrier with a metallic surface or a metal sheet and divides the square waveguide 16 into two identical rectangular waveguides 21, 22.
  • the septum 11 is designed in a stepped manner at its end 13 directed towards the radiator 12, as is the case with Fig. 2 clearly shows.
  • 1 and 4A is designed as a waveguide outcoupling, and has a bend 23, 24 for each of the two rectangular waveguides 21, 22 for the E-angles of the waveguides 21, 22.
  • the filter part F can either use capacitive coupling elements 1 and 3A or with inductive coupling elements according to FIG. 3B.
  • the inductive coupling elements according to FIG. 3 are known to be metallic partition walls 25, 26, the front edges 27, 28 of which are at a distance from the wall formed by the septum 11.
  • the capacitive coupling elements according to FIG. 3B are also metallic partitions 29, 30 or 29 ', 30', the end edges 31, 32, 31 ', 32' of which are in each case in contact with the septum 11, but which are centered in the two waveguides 21, 22 Determine gap opening 33, 33 '.
  • FIGS. 1 and 2 While in FIGS. 1 and 2 a radiator 12 with a conical configuration on both sides is provided, according to FIG. 5 a conical tip could also be provided only on the outside and a step-shaped coupling out on the inside.
  • the septum 11 is formed in a step-like manner in a known manner between the waveguide walls of the square waveguide 10.
  • a compensator K is provided to compensate for the phase position of the two polarized waves.
  • such a compensator can be a simple constriction in the waveguide in the walls arranged perpendicular to the plane of the septum.
  • a plate-shaped element made of a dielectric material could be used on both sides.
  • Such an element has dimensions of 14 x 16 mm, for example, and the perpendicular perpendicular plane of these elements, which is perpendicular to the septum, should then be at a distance of approximately 15 mm from the front edge of the foremost step of the septum 11.
  • a phase correction of approximately 8 ° can be achieved in order to set the phase angles of the TE10 mode wave and the TE01 mode wave to 90 °.
  • Such a primary feed can be produced very inexpensively using injection molding technology.
  • the two identical shells must be connected to each other after the septum has been inserted, for example by brazing.
  • mixed capacitive or inductive coupling elements can also be provided.

Abstract

The primary conductor consists of a square straight waveguide (10). A septum (13) with a stepped end section as a polariser forms an isolating wall in the waveguide (10), resulting in two identical, square waveguides (21, 22). To avoid echo waves, a filter element (F) is provided, which is provided with capacitive coupling elements. Between the septum (13) and the radiator (12), a phase compensator (K) is formed by means of a narrowing in the waveguide (10). The waves of the TE01 and TE10 mode thus produced from a circular-polarised wave have a phase angle of almost precisely 90 DEG . Such a waveguide can be produced very cost-effectively by die casting technology. <IMAGE>

Description

Die vorliegende Erfindung betrifft einen Hohlleiter mit Primärstrahler gemäss dem Oberbegriff des unabhängigen Patentanspruchs 1.The present invention relates to a waveguide with a primary radiator according to the preamble of independent claim 1.

Bei Satelliten-Fernsehen werden von den Satelliten aus zirkular polarisierte Wellen abgestrahlt. Je nach Staat oder Sendeunternehmen sind diese Wellen rechts- oder linksdrehend. Empfangsseitig muss somit die Möglichkeit geschaffen werden, beide Arten mit derselben Antenne empfangen zu können. Weil schliesslich auch die Möglichkeit geschaffen werden muss, dass jedermann direkt empfangen kann, ohne auf ein Kabelnetz angewiesen zu sein, müssen solche Antennen auch seriell bei geringen Kosten herstellbar sein.In satellite television, circularly polarized waves are emitted from the satellites. Depending on the state or broadcasting company, these waves are clockwise or counterclockwise. On the reception side, it must therefore be possible to receive both types with the same antenna. Finally, because the possibility must also be created that everyone can receive directly without having to rely on a cable network, such antennas must also be able to be produced serially at low costs.

Es ist deshalb eine Aufgabe der Erfindung, einen solchen Primärleiter zu schaffen, mit dem zirkular polarisierte Wellen bei Satelliten-Funk direkt empfangen werden können.It is therefore an object of the invention to provide such a primary conductor with which circularly polarized waves can be received directly in satellite radio.

Erfindungsgemäss wird dies mit einem Hohlleiter mit den Merkmalen im kennzeichnenden Teil des unabhängigen Patentanspruchs erreicht. In den abhängigen Patentansprüchen sind besonders vorteilhafte Ausführungsformen gekennzeichnet.According to the invention, this is achieved with a waveguide with the features in the characterizing part of the independent claim. Particularly advantageous embodiments are characterized in the dependent claims.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung beschrieben. Es zeigen:

  • Fig. 1 einen Primärleiter in Schnittansicht nach der Schnittlinie I-I in Fig. 2,
  • Fig. 2 den Primärleiter gemäss Fig. 1 in Schnittansicht nach der Schnittlinie II-II in Fig. 1,
  • Fig. 3A und 3B je eine Schnittansicht des Primärleiters von der Schnittstelle der Schnittlinie III-III in Fig. 1 aus betrachtet zur Darstellung von zwei Filtertypen,
  • Fig. 4A und 4B je eine Schnittansicht des Primärleiters von der Schnittstelle der Schnittlinie IV-IV in Fig. 1 aus betrachtet, zur Darstellung von zwei Auskopplungsarten, und
  • Fig. 5 einen Ausschnitt des Primärleiters nach Fig. 1 mit einer zweiten Ausführungsform des Strahlers.
Exemplary embodiments of the invention are described below with reference to the drawing. Show it:
  • 1 shows a primary conductor in a sectional view along the section line II in FIG. 2,
  • 2 shows the primary conductor according to FIG. 1 in a sectional view along the section line II-II in FIG. 1,
  • 3A and 3B are each a sectional view of the primary conductor viewed from the interface of section line III-III in FIG. 1 to show two filter types,
  • 4A and 4B each a sectional view of the primary conductor from the interface of the section line IV-IV in Fig. 1st viewed from, to represent two decoupling types, and
  • 5 shows a detail of the primary conductor according to FIG. 1 with a second embodiment of the radiator.

Der Primärleiter (aus dem englischen Sprachgebrauch hergeleitet auch Primärfeed genannt) gemäss Fig. 1 und 2 umfasst einen Auskopplungsteil A, einen Filterteil F, einen Polarisatorteil P, einen Phasenkorrekturteil K und einen Strahlerteil S. Alle diese Teile sind in einem geraden quadratischen Hohlleiter 10 angeordnet. Dieser Hohlleiter 10 ist durch ein Septum 11 aus einem Träger mit metallischer Oberfläche oder einem Metallblech gebildet und teilt den quadratischen Hohlleiter 16 in zwei identische rechteckige Hohlleiter 21, 22. Das Septum 11 ist an seinem gegen den Strahler 12 gerichteten Ende 13 abgestuft ausgebildet, wie Fig. 2 deutlich zeigt.1 and 2 comprises a decoupling part A, a filter part F, a polarizer part P, a phase correction part K and a radiator part S. All these parts are arranged in a straight square waveguide 10 . This waveguide 10 is formed by a septum 11 from a carrier with a metallic surface or a metal sheet and divides the square waveguide 16 into two identical rectangular waveguides 21, 22. The septum 11 is designed in a stepped manner at its end 13 directed towards the radiator 12, as is the case with Fig. 2 clearly shows.

Der Auskopplungsteil A ist gemäss Fig. 1 und 4A als Hohlleiter-Auskopplung ausgebildet, und weist für jeden der beiden rechteckigen Hohlleiter 21, 22 je einen Krümmer 23, 24 für die E-Winkel der Hohlleiter 21, 22 auf.1 and 4A is designed as a waveguide outcoupling, and has a bend 23, 24 for each of the two rectangular waveguides 21, 22 for the E-angles of the waveguides 21, 22.

Der Filterteil F kann entweder mit kapazitiven Koppelelementen gemäss Fig. 1 und 3A oder mit induktiven Koppelelementen gemäss Fig. 3B versehen sein. In diesem Ausführungsbeispiel sind vier Filterstufen vorgesehen, die je durch Koppelelemente voneinander getrennt sind. Die induktiven Koppelelemente nach Fig. 3 sind bekanntlich metallische Trennwände 25, 26, deren Stirnkanten 27, 28 einen Abstand zu der durch das Septum 11.gebildeten Wand aufweisen. Die kapazitiven Koppelelemente gemäss Fig. 3B sind ebenfalls metallische Trennwände 29, 30 bzw. 29', 30', deren Stirnkanten 31, 32, 31', 32' jeweils am Septum 11 anliegen, aber die mittig in den beiden Hohlleitern 21, 22 eine Spaltöffnung 33, 33' bestimmen.The filter part F can either use capacitive coupling elements 1 and 3A or with inductive coupling elements according to FIG. 3B. In this exemplary embodiment, four filter stages are provided, which are each separated from one another by coupling elements. The inductive coupling elements according to FIG. 3 are known to be metallic partition walls 25, 26, the front edges 27, 28 of which are at a distance from the wall formed by the septum 11. The capacitive coupling elements according to FIG. 3B are also metallic partitions 29, 30 or 29 ', 30', the end edges 31, 32, 31 ', 32' of which are in each case in contact with the septum 11, but which are centered in the two waveguides 21, 22 Determine gap opening 33, 33 '.

Als Auskopplungen im Auskopplungsteil A können Hohlleiterauskopplungen gemäss Fig. 1 und 4A verwendet sein oder.es können Koaxialanschlussstecker 40, 41 gemäss Fig. 4B anstelle der Schlitzöffnungen 42, 43 in die geschlossenen Wände der Hohlleiter 21, 22 eingesetzt werden.1 and 4A can be used as outcouplings in the outcoupling part A or coaxial connection plugs 40, 41 in accordance with FIG. 4B can be inserted into the closed walls of the waveguides 21, 22 instead of the slot openings 42, 43.

Während in Fig. 1 und 2 ein Strahler 12 mit beidseits kegelförmiger Ausbildung vorgesehen ist, könnte auch gemäss Fig. 5 nur aussenseitig eine kegelförmige Spitze und innenseitig eine stufig ausgebildete Auskopplung vorgesehen sein.While in FIGS. 1 and 2 a radiator 12 with a conical configuration on both sides is provided, according to FIG. 5 a conical tip could also be provided only on the outside and a step-shaped coupling out on the inside.

Das Septum 11 ist zwischen den Hohlleiterwänden des quadratischen Hohlleiters 10 in bekannter Weise stufig ausgebildet. Zur Kompensation der Phasenlage der beiden polarisierten Wellen ist ein Kompensator K vorgesehen.The septum 11 is formed in a step-like manner in a known manner between the waveguide walls of the square waveguide 10. A compensator K is provided to compensate for the phase position of the two polarized waves.

Ein solcher Kompensator kann gemäss Fig. 2 eine einfache Verengung im Hohlleiter in den senkrecht zur Ebene des Septums angeordneten Wänden sein. In einer zweiten möglichen Ausbildungsform könnten beidseits je ein plattenförmiges Element aus einem dielektrischen Material eingesetzt sein. Ein solches Element hat beispielsweise Abmessungen von 14 x 16 mm und die senkrecht zum Septum verlaufende mittelsenkrechte Ebene dieser Elemente sollte dann einen Abstand von etwa 15 mm von der Vorderkante der vordersten Stufe des Septums 11 haben. Mit einem dielektrischen Material, das eine Dielektrizitätskonstante Er= 2,2 hat, kann eine Phasenkorrektur von etwa 8° erreicht werden, um damit die Phasenwinkel der TE10 Mode Welle und der TE01 Mode Welle auf 90° einzustellen.According to FIG. 2, such a compensator can be a simple constriction in the waveguide in the walls arranged perpendicular to the plane of the septum. In a second possible embodiment, a plate-shaped element made of a dielectric material could be used on both sides. Such an element has dimensions of 14 x 16 mm, for example, and the perpendicular perpendicular plane of these elements, which is perpendicular to the septum, should then be at a distance of approximately 15 mm from the front edge of the foremost step of the septum 11. With a dielectric material that has a dielectric constant Er = 2.2, a phase correction of approximately 8 ° can be achieved in order to set the phase angles of the TE10 mode wave and the TE01 mode wave to 90 °.

Ein solcher Primärfeed lässt sich sehr kostengünstig in Spritzgusstechnik herstellen. Die beiden identischen Schalen müssen nach dem Einsetzen des Septums miteinander verbunden werden, beispielsweise durch Hartlöten.Such a primary feed can be produced very inexpensively using injection molding technology. The two identical shells must be connected to each other after the septum has been inserted, for example by brazing.

Anstelle der rein kapazitiven oder induktiven Koppelelemente können auch gemischte kapazitive oder induktive Koppelelemente vorgesehen sein.Instead of the purely capacitive or inductive coupling elements, mixed capacitive or inductive coupling elements can also be provided.

Claims (13)

1. Hohlleiter mit Primärstrahler, insbesondere für Satelliten-Direktempfang, mit einer Polarisationsweiche zur Umwandlung von Wellen mit zirkularer Polarisation in Wellen mit TE10-Mode oder Wellen mit TE01-Mode je nach Drehrichtung der Zirkularpolarisation, dadurch gekennzeichnet, dass der einerseits geschlossene quadratische Hohlleiter (10) folgende Abschnitte umfasst: a) einen Ankopplungsabschnitt (A) b) einen Filterabschnitt (F) c) eine Polarisationsweiche (P) mit Phasenkompensator (K) und d) einen dielektrischen Strahler (S) 1.Waveguide with primary radiator, in particular for direct satellite reception, with a polarization switch for converting waves with circular polarization into waves with TE10 mode or waves with TE01 mode depending on the direction of rotation of the circular polarization, characterized in that the square waveguide, which is closed on the one hand ( 10) includes the following sections: a) a coupling section (A) b) a filter section (F) c) a polarization switch (P) with phase compensator (K) and d) a dielectric radiator (S) 2. Hohlleiter nach Patentanspruch 1, dadurch gekennzeichnet, dass die Polarisationsweiche (P) ein plattenförmiges abgestuftes Septum (13) ist, mit dem der quadratische Hohlleiter (10) in zwei identische rechteckige Hohlleiter (21, 22) unterteilt ist.2. Waveguide according to claim 1, characterized in that the polarization switch (P) is a plate-shaped stepped septum (13) with which the square waveguide (10) is divided into two identical rectangular waveguides (21, 22). 3. Hohlleiter nach Patentanspruch 2, dadurch gekennzeichnet, dass der Phasenkompensator (K) eine Verengung des quadratischen Hohlleiters (10) je im Abstand von Septum (13) und Strahler (S) ist, die im quadratischen Hohlleiter (10) einen rechteckigen Abschnitt bildet, dessen längere Rechteckseiten senkrecht auf der Ebene des Septums(13) stehen.3. Waveguide according to claim 2, characterized in that the phase compensator (K) is a narrowing of the square waveguide (10) each at a distance from the septum ( 13 ) and radiator (S), which forms a rectangular section in the square waveguide (10) , whose longer sides of the rectangle are perpendicular to the plane of the septum (13). 4. Hohlleiter nach Patentanspruch 3, dadurch gekennzeichnet, dass die Verengung im Hohlleiter (10) durch entsprechende Formung der metallischen Wände gebildet ist.4. waveguide according to claim 3, characterized in that the constriction in the waveguide (10) is formed by appropriate shaping of the metallic walls. 5. Hohlleiter nach Patentanspruch 3, dadurch gekennzeichnet, dass die Verengung im Hohlleiter (10) durch Einlagen aus Platten aus einem dielektrischen Material gebildet ist.5. Waveguide according to claim 3, characterized in that the constriction in the waveguide (10) is formed by inserts made of plates made of a dielectric material. 6. Hohlleiter nach einem der Patentansprüche 2 bis 5, dadurch gekennzeichnet, dass die Ankopplung (A) in jedem durch das Septum abgegrenzten rechteckigen Hohlleiter (21, 22) im Abstand von λ/4 vom geschlossenen Ende angeordnet ist.6. Waveguide according to one of the claims 2 to 5, characterized in that the coupling (A) is arranged in each rectangular waveguide (21, 22) delimited by the septum at a distance of λ / 4 from the closed end. 7. Hohlleiter nach Patentanspruch 6, dadurch gekennzeichnet, dass die Ankopplungen als E-Winkel ausgebildet sind.7. waveguide according to claim 6, characterized in that the couplings are designed as an E-angle. 8. Hohlleiter nach Patentanspruch 6, dadurch gekennzeichnet, dass die Ankopplungen koaxial mittels in den Hohlleiter eingreifenden Antennen gebildet sind.8. waveguide according to claim 6, characterized in that the couplings are formed coaxially by means of antennas engaging in the waveguide. 9. Hohlleiter nach einem der Patentansprüche 1 bis 8, dadurch gekennzeichnet, dass der Strahler (S) als Doppelkegel ausgebildet ist.9. Waveguide according to one of the claims 1 to 8, characterized in that the radiator (S) is designed as a double cone. 10. Hohlleiter nach einem der Patentansprüche 1 bis 8, dadurch gekennzeichnet, dass der Strahler (S) nach aussen hin kegelförmig und gegen den Hohlleiter hin stufig ausgebildet ist.10. Waveguide according to one of the claims 1 to 8, characterized in that the radiator (S) is conical towards the outside and is stepped against the waveguide. 11. Hohlleiter nach einem der Patentansprüche 1 bis 10, dadurch gekennzeichnet, dass das Filter im Filterabschnitt (F) durch kapazitive Koppelelemente gebildet ist.11. Waveguide according to one of the claims 1 to 10, characterized in that the filter in the filter section (F) is formed by capacitive coupling elements. 12. Hohlleiter nach einem der Patentansprüche 1 bis 10, dadurch gekennzeichnet, dass das Filter im Filterabschnitt (F) durch induktive Koppelelemente gebildet ist.12. Waveguide according to one of the claims 1 to 10, characterized in that the filter in the filter section (F) is formed by inductive coupling elements. 13. Hohlleiter nach einem der Patentansprüche 1 bis 10, dadurch gekennzeichnet, dass das Filter im Filterabschnitt (F) eine Kombination von kapazitiven und induktiven Koppelelementen aufweist.13. Waveguide according to one of the claims 1 to 10, characterized in that the filter in the filter section (F) has a combination of capacitive and inductive coupling elements.
EP85810454A 1984-10-10 1985-10-04 Waveguide with a primary radiator Withdrawn EP0178259A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4881/84 1984-10-10
CH4881/84A CH668507A5 (en) 1984-10-10 1984-10-10 WAVE LADDER WITH A SPOTLIGHT.

Publications (2)

Publication Number Publication Date
EP0178259A2 true EP0178259A2 (en) 1986-04-16
EP0178259A3 EP0178259A3 (en) 1988-07-20

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EP85810454A Withdrawn EP0178259A3 (en) 1984-10-10 1985-10-04 Waveguide with a primary radiator

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218549A2 (en) * 1985-10-11 1987-04-15 HUBER &amp; SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE Waveguide device
EP0252269A1 (en) * 1986-06-07 1988-01-13 Hans Kolbe & Co. Conversion device
EP0349842A2 (en) * 1988-07-07 1990-01-10 Kathrein-Werke Kg Polarisation-selective waveguide-junction
FR2766625A1 (en) * 1997-07-28 1999-01-29 Alsthom Cge Alcatel SENSE CIRCULAR POLARIZATION ANTENNA
FR2831997A1 (en) * 2001-11-07 2003-05-09 Thomson Licensing Sa DUAL CIRCULAR CIRCULAR FREQUENCY SEPARATOR GUIDE MODULE AND RECEIVER-TRANSMITTER HAVING THE SAME
WO2006111702A1 (en) 2005-04-21 2006-10-26 Invacom Ltd Circular and/of linear polarity format data receiving apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3117685B1 (en) * 2020-12-10 2024-03-15 Thales Sa Antenna source for a direct radiating array antenna, radiating panel comprising several antenna sources.

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US2432093A (en) * 1942-07-30 1947-12-09 Bell Telephone Labor Inc Wave transmission network
US2784380A (en) * 1951-04-20 1957-03-05 Hartford Nat Bank & Trust Co Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system
GB2076229A (en) * 1980-05-01 1981-11-25 Plessey Co Ltd Improvements in or relating to apparatus for microwave signal processing
JPS56166605A (en) * 1980-05-27 1981-12-21 Nippon Telegr & Teleph Corp <Ntt> Dielectric focused horn
EP0059927A1 (en) * 1981-03-07 1982-09-15 ANT Nachrichtentechnik GmbH Microwave receiving arrangement
EP0060762A1 (en) * 1981-03-18 1982-09-22 Portenseigne Receiving system for orthogonally polarized HF signals

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US2432093A (en) * 1942-07-30 1947-12-09 Bell Telephone Labor Inc Wave transmission network
US2784380A (en) * 1951-04-20 1957-03-05 Hartford Nat Bank & Trust Co Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system
GB2076229A (en) * 1980-05-01 1981-11-25 Plessey Co Ltd Improvements in or relating to apparatus for microwave signal processing
JPS56166605A (en) * 1980-05-27 1981-12-21 Nippon Telegr & Teleph Corp <Ntt> Dielectric focused horn
EP0059927A1 (en) * 1981-03-07 1982-09-15 ANT Nachrichtentechnik GmbH Microwave receiving arrangement
EP0060762A1 (en) * 1981-03-18 1982-09-22 Portenseigne Receiving system for orthogonally polarized HF signals

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218549A2 (en) * 1985-10-11 1987-04-15 HUBER &amp; SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE Waveguide device
EP0218549A3 (en) * 1985-10-11 1988-10-05 HUBER &amp; SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE Waveguide device
EP0252269A1 (en) * 1986-06-07 1988-01-13 Hans Kolbe & Co. Conversion device
EP0349842A2 (en) * 1988-07-07 1990-01-10 Kathrein-Werke Kg Polarisation-selective waveguide-junction
EP0349842A3 (en) * 1988-07-07 1990-08-29 Kathrein-Werke Kg Polarisation-selective waveguide-junction
EP0895298A1 (en) * 1997-07-28 1999-02-03 Alcatel Antenna with circular polarisation in one sense
FR2766625A1 (en) * 1997-07-28 1999-01-29 Alsthom Cge Alcatel SENSE CIRCULAR POLARIZATION ANTENNA
US6100854A (en) * 1997-07-28 2000-08-08 Alcatel Antenna with one-way circular polarization
FR2831997A1 (en) * 2001-11-07 2003-05-09 Thomson Licensing Sa DUAL CIRCULAR CIRCULAR FREQUENCY SEPARATOR GUIDE MODULE AND RECEIVER-TRANSMITTER HAVING THE SAME
WO2003041214A1 (en) * 2001-11-07 2003-05-15 Thomson Licensing Sa Frequency-separator waveguide module with double circular polarization
US7132907B2 (en) 2001-11-07 2006-11-07 Thomson Licensing Frequency-separator waveguide module with double circular polarization
KR100880861B1 (en) * 2001-11-07 2009-01-30 톰슨 라이센싱 Frequency-separator waveguide module with double circular polarization and transmitter-receiver
WO2006111702A1 (en) 2005-04-21 2006-10-26 Invacom Ltd Circular and/of linear polarity format data receiving apparatus

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Publication number Publication date
CH668507A5 (en) 1988-12-30
EP0178259A3 (en) 1988-07-20

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