EP1043797B1 - Erreger- oder Speisevorrichtung für eine Satellitenantenne - Google Patents
Erreger- oder Speisevorrichtung für eine Satellitenantenne Download PDFInfo
- Publication number
- EP1043797B1 EP1043797B1 EP00105046A EP00105046A EP1043797B1 EP 1043797 B1 EP1043797 B1 EP 1043797B1 EP 00105046 A EP00105046 A EP 00105046A EP 00105046 A EP00105046 A EP 00105046A EP 1043797 B1 EP1043797 B1 EP 1043797B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- decoupling
- waveguide
- phase shifter
- excitation
- feed system
- 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
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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
- H01P1/18—Phase-shifters
- H01P1/182—Waveguide phase-shifters
Definitions
- the invention relates to an excitation or feed system especially for a satellite antenna for transmission or Receive orthogonally linear and / or orthogonal circularly polarized electromagnetic waves after the Preamble of claim 1.
- Such an excitation or feed system is, for example known from DE 37 41 501 C1.
- This pathogen or feed system usually comprises a horn, which is constructed in the manner of a waveguide beam.
- funnel-shaped extension which also Feedhorn
- a waveguide To the front, e.g. funnel-shaped extension (which also Feedhorn) is followed by a waveguide.
- This has a short circuit at its end, for example on.
- a waveguide section can be arranged transversely to this that leads to a converter.
- a further output can also be provided there which is, for example, another converter for reception the polarization orthogonal to the first output followed.
- phase shifter elements for example a 90 ° phase shifter element and a 180 ° phase shifter element.
- phase shifter plate used consist of dielectric material. So far also spoken of dielectric phase shifters. there is also from Erich Pehl for example: "microwave technology”, Volume 1: Waveguides and Line Modules, Weghig-Verlag, 1988, pages 170 to 172 and pages 243 and 244 announced that especially in waveguide technology as Phase shifters next to dielectric phase shifters or dielectric phase shifter plates so-called ferrite components Find use. Finally, beyond that but also basically known, a phase shift to realize by platelets that, for example, from Metal are formed.
- An array or feed device is also known from US-A 4,100,514 became known.
- the known polarizer consists of 280 ° offset and each other phase shifter elements extending in the direction of propagation of the cavity.
- a decoupling or Adjustment device provided, which by 90 ° to the phase shift effecting plane of the phase shifter are arranged horizontally. This decoupling or Adjustment devices are also 180 ° apart arranged. The adjustment device extends about the same length (in the direction of propagation) like the phase shifter elements.
- the object of the present invention is therefore based on this from the last-mentioned generic class the technology, an improved excitation and / or feeding system especially for the reception of orthogonal to each other standing linear polarizations and / or to receive to create circular polarizations.
- the present invention makes it remarkably simple Kind in an unpredictable way one more time significant improvement in the decoupling of the different Electromagnetic polarities Waves. According to the invention, this is achieved by an additional decoupling or balancing device allows.
- phase shifter In contrast to the generic state of the art especially not the frequency dependency in the present invention of the phase shifter, but it is primarily targeted with a decoupling or balancing element an additional reflection of the orthogonal Polarization causes. This does not change the phase behavior of the original phase shifter, but compensated the finite reflection behavior.
- the decoupling or adjustment device provided according to the invention doesn't necessarily have to be in one to the level of the phase shifter elements is provided on the vertical plane his. Rather, the invention Decoupling or adjustment device in an angular range from + 30 ° to + 150 ° or e.g. from + 60 ° to + 120 ° rotated relative to the plane of the phase shifter element be provided. In other words, that's additional Decoupling or trimming element with its center in an angular range of + 30 ° to + 150 ° (or for example -30 ° to -150 °), preferably in an angular range from + 60 ° to + 120 ° (or -30 ° to -120 °) compared to one the orthogonal alignment planes, i.e. in relation to the phase shifter plane, turned.
- the additional decoupling and balancing element is preferably present from a comparatively small dimension Bodies, for example disk-shaped or cylindrical Body, or from a body according to Art a cuboid, preferably with a square cross section.
- This additional decoupling or balancing element can arranged on the inner boundary surface of the waveguide be, which is transverse to the direction of propagation of the electromagnetic waves, i.e. to the longitudinal direction of the Waveguide protrudes into the inner cross section. It is the extension height based on the diameter of the upper conductor preferably less than 50%, especially less than 25%, 20%, 15% and 10%, respectively.
- FIG 1 is a so-called in the schematic longitudinal cross section Horn 1 shown how it usually works together with a parabolic antenna for sending or receiving is used by electromagnetic waves.
- Horn 1 is constructed like a waveguide radiator.
- funnel-shaped extension 3 closes a waveguide 5 to which in the direction of propagation for example, an exit sitting in a suitable place with a polarization or for example a polarization switch can connect.
- a polarization switch for example, it is based on the previously known excitation and feeding systems.
- the waveguide 5 comprises a waveguide section 5 ', which is also a separate component can be formed, as indicated in Figures 1 and 3 is.
- the waveguide 5 or the mentioned waveguide section 5 ' have a phase shifter 11, for example 180 ° phase shifter, which consists of two plates 11 ', that in a first plane 14 in the middle of the waveguide 5 arranged diametrically opposite each other and on the Inner wall 15 of the waveguide 5 or the waveguide section 5 'attached, held there or formed there are.
- the phase shifter plates 11 ' have a length L to with respect to one transverse to this plane 14 lying E vector a corresponding desired phase shift perform.
- the phase shifter or that Phase shifter platelets can be made from suitable materials consist, for example, of dielectric material Ferrite material or also of metal or cast metal etc., So from all suitable materials with which one Phase shift is possible. Finally, it can also the shape of the phase shifter or the phase shifter plate be varied as far as appropriate Phase shift is realizable.
- phase shifter 11 In the longitudinal extent of the phase shifter 11 is in the embodiment shown in the area of the inner wall 15 an additional decoupling or adjustment element 19 provided.
- This decoupling or balancing element 19 is dimensioned as comparatively small Elevation 19 'designed on the inner wall 15 of the Waveguide 5 or waveguide section 5 'sits. It can approximately more or less hemispherical, cylindrical or also with a polygonal circumferential cross-section, e.g. e.g. also be cuboid, etc. size and shape can be varied in a wide range, to correspond to the desired frequency range and / or the dimensioning and design of the waveguide to achieve further optimization.
- the center point 23 of this decoupling or balancing element 19 does not lie exactly on this cross-sectional plane 27 with respect to a cross-sectional plane 27 lying transversely to the direction of propagation 25 of the electromagnetic waves, i.e. transversely to the central longitudinal direction 25 of the waveguide 5 or waveguide section 5 ', but is the horn in the exemplary embodiment shown 1 arranged at least slightly closer.
- the distance between the center point 23 of the decoupling or matching element 19 from the cross-sectional plane 27 mentioned is one eighth to half the wavelength of the electrical or magnetic wave vector, in particular approximately ⁇ H / 4 of this wavelength.
- the decoupling or balancing element 19 in an angular range of preferably + 30 ° to + 60 ° (or -30 ° to -60 °) relative to the phase shifter plane 14 of the Phase shifter element 11 arranged aligned, that is preferably at least approximately such that the center 23 of the decoupling or matching element 19 on a Phase shifter plane 14 lies by plane 29 rotated by 90 °.
- the center point 23 of the decoupling or trimming element 19 can also at least with this level 29 be arranged with a small offset.
- decoupling or alignment element 19 only one side to the phase shifter plane 14 is sufficient is, although also on the opposite inside of the waveguide, if necessary, an additional one Decoupling or adjustment element 19 may be provided can. Likewise, in certain applications on a or on either side to the phase shifter plane 14 still one or more decoupling or adjustment elements 19 are arranged.
Landscapes
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
- Figur 1:
- eine schematische auszugsweise Längsschnittdarstellung durch eine erfindungsgemäße Erreger- bzw. Speisesystemvorrichtung, insbesondere für den Satellitenempfang;
- Figur 2 :
- eine Querschnittsdarstellung längs der Linie II-II in Figur 1; und
- Figur 3 :
- eine auszugsweise um 90° verdreht liegende Längsschnittdarstellung längs der Linie III-III in Figur 1.
Claims (15)
- Erreger- und/oder Speisesystem, insbesondere zum Senden und/oder zum Empfangen von orthogonal linear oder orthogonal zirkular polarisierten elektromagnetischen Wellen, mit folgenden Merkmalenmit einem Hohlleiter (5, 5'),im Bereich des Hohlleiters (5, 5') ist ein Phasenschieber (11) vorgesehen,der Phasenschieber (11) besteht aus zwei um 180° versetzt zueinander liegende und sich in Ausbreitrichtung des Hohlleiters (5, 5') erstreckenden und von der Innenwandung des Hohlleiters in einer Ebene (14) radial vorstehenden Phasenschieberelementen (11, 11'),es ist ferner eine Entkopplungs- oder Abgleicheinrichtung (19) vorgesehen, unddie Entkopplungs- oder Abgleicheinrichtung (19) ist zu der die Phasenverschiebung bewirkende Ebene (14) des Phasenschiebers (11) um die Ausbreitrichtung oder Mittellängsebene (25) des Hohlleiters (5) in einem Winkelbereich von +30° bis +150° und/oder -30° bis -150° versetzt liegend angeordnet,die Entkopplungs- oder Abgleicheinrichtung (19) ist bei axialer Betrachtung des Hohlleiters (5, 5') nur auf einer Seite der Innenwandung (15) des Hohlleiters (5, 5') vorgesehen, unddie Entkopplungs- oder Abgleicheinrichtung (19) ist gegenüber der Länge der Phasenschieberelemente (11, 11') kürzer ausgebildet, und zwar derart, dass die Längs- und/oder Quererstreckung der Entkopplungs- oder Abgleicheinrichtung (19) bezogen auf die Länge (L) des Phasenschieberelementes (11) weniger als 75 % beträgt.
- Erreger- und/oder Speisesystem nach Anspruch 1, dadurch gekennzeichnet, dass das Entkopplungs- oder Abgleichelement (19) beabstandet zum Phasenschieber (11) zumindest in der Nähe der Innenwandung (15) des Hohlleiters (5, 5') angeordnet ist.
- Erreger- und/oder Speisesystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Entkopplungs- oder Abgleichelement (19) an der Innenwandung (15) des Hohlleiters (5, 5') sitzt.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Längs- und/oder Quererstreckung des zusätzlich zumindest einen Entkopplungs- oder Abgleichelementes (19) bezogen auf die Länge des Phasenschieber (11) weniger als 50% beträgt.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Längs- und/oder Quererstreckung des zusätzlich zumindest einen Entkopplungs- oder Abgleichelementes (19) bezogen auf die Länge des Phasenschiebers (11) weniger als 30% beträgt.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Höhe des zumindest einen Entkopplungs- oder Abgleichelementes (19) gegenüber der Innenwand (15) weniger als 30% des Durchmessers des Hohlleiters (5, 5'), vorzugsweise weniger als 25%, insbesondere weniger als 20%, 15%, 10% des Durchmessers des Hohlleiters (5, 5') beträgt.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Entkopplungsoder Abgleichelement (19) der Form einer Halbkugel, der Form eines Zylinders, der Form eines Quaders oder Kobuses, der Form eines Körpers mit polygonaler ümfangsflache oder dergleichen entspricht oder angenähert ist.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Mittelpunkt (23) des zumindest einen Entkopplungs- oder Abgleichelementes (19) zu einer Querschnittsebene (27) versetzt liegt, die sich senkrecht zur Ausbreitungsrichtung oder Mittellängsachse (25) des Hohlleiters (5, 5') erstreckt und dabei den Phasenschieber (11) bezogen auf seine Längserstreckung in dessen Mitte schneidet.
- Erreger- und/oder Speisesystem nach Anspruch 8, dadurch gekennzeichnet, dass der Mittelpunkt (23) des zumindest einen Entkopplungs- oder Abgleichelementes (19) bezogen auf die Querschnittsebene (27) in Empfangsrichtung vor der Querschnittsebene (27) liegt.
- Erreger- und/oder Speisesystem nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Abstand zwischen dem Mittelpunkt (23) und der Querschnittsebene (27) etwa λ/8 bis λ/2, insbesondere um λ/4 der Wellenlänge des H- oder E-Vektors entspricht.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Mittelpunkt (23) des Entkopplungs- oder Abgleichelementes (19) auf einer Ebene (29) oder unmittelbar benachbart zu einer Ebene (29) liegt, die senkrecht zu der das Phasenschieberelement (11) aufnehmenden Ebene (14) liegt.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Mittelpunkt des Entkopplungs- oder Abgleichelementes (19), vorzugsweise das gesamte Entkopplungs- oder Abgleichelement (19) bei seitlicher Betrachtung quer zur Ausbreitungsrichtung oder Mittellängsachse (25) des Hohlleiters (5) in dem Längserstreckungsbereich des Phasenschiebers (11) angeordnet ist.
- Erreger- und/oder Speisesystem nach Anspruch 12, dadurch gekennzeichnet, dass der Mittelpunkt (23) des Entkopplungs- oder Abgleichelementes (19) bezogen auf eine quer zur Ausbreitungsrichtung bzw. Mittellängsachse (25) des Hohlleiters (5) liegende Querschnittsebene in Empfangsrichtung der elektromagnetischen Wellen dem Mittelpunkt des Phasenschiebers (11) vorgelagert ist.
- Erreger- und/oder Speisesystem nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass das Entkopplungsoder Abgleichelement (19) mit seiner Gesamtlänge bezogen auf eine quer zur Ausbreitungsrichtung bzw. Mittellängsachse (25) des Hohlleiters (5) erfolgten Betrachtung im Bereich des Phasenschiebers (11) angeordnet ist.
- Erreger- und/oder Speisesystem nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass das zumindest eine zusätzliche Entkopplungs- oder Abgleichelement (19) zu der die Phasenverschiebung bewirkenden Ebene (14) des Phasenschiebers (11) um die Ausbreitungsrichtung oder Mittellängsachse (25) des Hohlleiters (5) in einem Winkelbereich von +60° bis +120° oder -60° bis -120°, vorzugsweise um näherungsweise oder exakt +90° oder -90° versetzt liegend angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19912262A DE19912262A1 (de) | 1999-03-18 | 1999-03-18 | Erreger- oder Speisevorrichtung, insbesondere für eine Satellitenantenne |
DE19912262 | 1999-03-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1043797A1 EP1043797A1 (de) | 2000-10-11 |
EP1043797B1 true EP1043797B1 (de) | 2003-09-24 |
Family
ID=7901545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00105046A Expired - Lifetime EP1043797B1 (de) | 1999-03-18 | 2000-03-09 | Erreger- oder Speisevorrichtung für eine Satellitenantenne |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1043797B1 (de) |
AT (1) | ATE250807T1 (de) |
DE (2) | DE19912262A1 (de) |
ES (1) | ES2204381T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108539416B (zh) * | 2018-01-29 | 2021-01-15 | 上海安费诺永亿通讯电子有限公司 | 同频双天线系统以及解耦合方法以及天线设备和移动终端 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100514A (en) * | 1977-04-28 | 1978-07-11 | Gte Sylvania Incorporated | Broadband microwave polarizer device |
US4523160A (en) * | 1983-05-02 | 1985-06-11 | George Ploussios | Waveguide polarizer having conductive and dielectric loading slabs to alter polarization of waves |
US4725795A (en) * | 1985-08-19 | 1988-02-16 | Hughes Aircraft Co. | Corrugated ridge waveguide phase shifting structure |
US4712110A (en) * | 1985-12-26 | 1987-12-08 | General Dynamics, Pomona Division | Five-port monopulse antenna feed structure with one dedicated transmit port |
DE3741501C1 (de) * | 1987-12-08 | 1989-02-02 | Kathrein Werke Kg | Erreger- bzw. Speisesystem fuer eine Parabolantenne |
DE4113760C2 (de) * | 1991-04-26 | 1994-09-01 | Hirschmann Richard Gmbh Co | Anordnung zur Umwandlung eines Mikrowellentyps |
-
1999
- 1999-03-18 DE DE19912262A patent/DE19912262A1/de not_active Withdrawn
-
2000
- 2000-03-09 EP EP00105046A patent/EP1043797B1/de not_active Expired - Lifetime
- 2000-03-09 ES ES00105046T patent/ES2204381T3/es not_active Expired - Lifetime
- 2000-03-09 AT AT00105046T patent/ATE250807T1/de active
- 2000-03-09 DE DE50003783T patent/DE50003783D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1043797A1 (de) | 2000-10-11 |
ES2204381T3 (es) | 2004-05-01 |
DE19912262A1 (de) | 2000-10-12 |
DE50003783D1 (de) | 2003-10-30 |
ATE250807T1 (de) | 2003-10-15 |
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