EP0088664B1 - Kopplungsvorrichtung zwischen zwei Mikrowellenhohlleiter - Google Patents

Kopplungsvorrichtung zwischen zwei Mikrowellenhohlleiter Download PDF

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Publication number
EP0088664B1
EP0088664B1 EP83400364A EP83400364A EP0088664B1 EP 0088664 B1 EP0088664 B1 EP 0088664B1 EP 83400364 A EP83400364 A EP 83400364A EP 83400364 A EP83400364 A EP 83400364A EP 0088664 B1 EP0088664 B1 EP 0088664B1
Authority
EP
European Patent Office
Prior art keywords
waveguide
rotation
axis
piece
section
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
EP83400364A
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English (en)
French (fr)
Other versions
EP0088664A1 (de
Inventor
Paul Bourgie
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
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Filing date
Publication date
Application filed by Alcatel Espace Industries SA filed Critical Alcatel Espace Industries SA
Publication of EP0088664A1 publication Critical patent/EP0088664A1/de
Application granted granted Critical
Publication of EP0088664B1 publication Critical patent/EP0088664B1/de
Expired 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
    • H01P1/06—Movable joints, e.g. rotating joints
    • H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
    • H01P1/063—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation
    • H01P1/064—Movable joints, e.g. rotating joints the relative movement being a rotation with a limited angle of rotation the axis of rotation being perpendicular to the transmission path, e.g. hinge joint
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/04—Fixed joints
    • H01P1/042—Hollow waveguide joints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S343/00—Communications: radio wave antennas
    • Y10S343/02—Satellite-mounted antenna

Definitions

  • the invention relates to a device for coupling between two microwave waveguides comprising a fixed frame in which the first waveguide is pierced, and a part pierced with the second waveguide and movable in rotation, between a first and a second position, around an axis of rotation coincident with the longitudinal axis of the two waveguides, at least one quarter-wave trap being provided at the junction between said guides.
  • the invention is applicable in particular in the case of the connection of a pivoting antenna fitted to a satellite.
  • a pivoting antenna fitted to a satellite.
  • Such an antenna has two positions: In a first position it is connected against the satellite, in order to be able to fit within the volume delimited by the cover which protects the satellite during its launching; it is deployed and placed in a second position, its operating position, when the satellite has arrived in orbit. The angle of rotation is then less than 360 °, and the second position is fixed.
  • the antenna is connected, by two waveguide sections to the transmission or reception equipment located on board the satellite.
  • a section is secured to the antenna and a section is secured to the satellite.
  • the junction between the fixed section and the mobile section must be carried out by a device which does not attenuate the signal and which is reliable in a temperature range from -150 ° C to + 200 ° C, in the presence of radiation.
  • an antenna for a helicopter having facilities for deploying and folding this antenna.
  • the antenna is linked to the transceiver by a flexible waveguide, but the longer the angle of rotation, the longer it is; its losses are not negligible, and vary randomly according to the conformation taken by the guide after the deployment of the antenna.
  • the device according to the invention overcomes these drawbacks by simple means.
  • a coupling device between two microwave waveguides, of rectangular section, for connecting a first, fixed waveguide to a second waveguide, having the same longitudinal axis and pivoting around this axis to get into a determined position is characterized in that each of the guides opens perpendicularly to a plane face perpendicular to this axis; in that these two faces are separated by a space of non-zero thickness and much less than the length of the waves; in that at least one of these faces is hollowed out by a quarter-wave trap surrounding the waveguide opening opening onto this face; and in that it comprises a stop to stop the rotation of the second guide when it has reached the position where it is in the extension of the first guide.
  • a section 9 of waveguide tube, of rectangular section connects the transmission or reception equipment to the device according to the invention
  • a section 15 of waveguide tube, of rectangular section connects the coupling device to the antenna.
  • This device mainly comprises a fixed frame 8 secured to the satellite and a piece 17 secured to the antenna and to the section of waveguide tube 15.
  • the piece 17 can rotate, relative to the frame 8, by means of two ball bearings, 11 and 16, having the same axis of revolution coincident with the longitudinal axis of the waveguide tube section 9.
  • the rotation of the part 17 and of the antenna is ensured by a motor, or a spring, not shown on the figure.
  • the two positions of the antenna are defined by stops which are not shown either.
  • the part 17 has a flat face, perpendicular to the axis of rotation, onto which opens a waveguide 2, of rectangular section; at this end of the waveguide 2 its longitudinal axis coincides with the axis of rotation of the part 17.
  • the waveguide 2 is drilled inside the part 17 and opens, after a 90 ° bend , opposite the section of waveguide tube 15, which, in this example, is perpendicular to the axis of rotation of the part 17.
  • the coupling device further comprises a part 7 to which the end of the section 9 of the waveguide tube is connected.
  • the part 7 is fixed by four screws 14 to the frame 8. It has a flat face perpendicular to the axis of rotation and placed opposite the flat face of the part 17.
  • a waveguide 1 is drilled in the part 7, in the extension of the waveguide tube 9 and opening onto the flat face of the part 7.
  • the part 17 has a position such as the waveguide 2 is an extension of the waveguide 1 and the waveguide 9.
  • a quarter-wave trap 5 is dug on the flat face of the part 7 circularly around the hole where the waveguide 1 opens, the axis of symmetry of revolution of the trap 5 being coincident with the 'rotation axis.
  • a quarter-wave trap is a classic device to ensure, from a radioelectric point of view, the tightness of the connection of two waveguide tubes.
  • the end of each waveguide tube is provided with a flat flange and perpendicular to the longitudinal axis of the two tubes. The flanges of the two tubes to be connected are pressed against each other by four clamping screws.
  • a quarter-wave trap consists of a rectangular section groove, the depth of which is equal to a quarter of the wavelength, and which is hollowed out in one of the flanges on the flat face in contact with the other flaccid.
  • This groove is circular and surrounds the hole where the waveguide opens. If the waveguide has a rectangular section, the maximum distance between the groove and the walls of the guide is chosen to be equal to a quarter of the wavelength. Thus the junction between the two flanges behaves like a short circuit even if the two flanges are not completely contiguous.
  • Figure 2 shows a top view of the part 7.
  • the wavelength is about 3cm
  • the section of the waveguide 1 is 22.86mm x 10.16mm
  • the inside diameter of the quarter-wave trap is 29.26mm
  • its outside diameter is 32.86mm
  • its depth is 9.10mm.
  • the flat face of the part 7, located opposite the flat face of the part 17, is delimited by a cylindrical flank 18, of diameter 40mm, the longitudinal axis of which coincides with the axis of rotation.
  • the space between the two opposite faces of the parts 7 and 17 has a width of 0.05 mm which allows their relative rotation without them rubbing. The absence of friction decreases the energy expenditure necessary for the deployment of the antenna and avoids the problems due to the dilation according to the temperature.
  • the ball bearing 11 is fixed, on the one hand, to the part 17 by a clamping flange 10, screwed onto a thread, and on the other hand to the frame 8 by a flange 12 held by four screws 13.
  • the flanges 10 and 12 have an axis of symmetry of revolution coincident with the axis of rotation.
  • a variant of the coupling device according to the invention comprises a membrane 6 intended to perfect the radioelectric tightness of the joint, already ensured by the quarter-wave trap 5.
  • the membrane 6 is planar, with the exception of a domed ring intended to make it more elastic. It also has a circular opening concentric with the domed ring and diameter 37mm. The domed ring and the opening have their center located on the axis of rotation.
  • the membrane 6 has an axis of symmetry of revolution which coincides with the axis of rotation. The edge of the circular opening presses and rubs against the collar 10, while the periphery of the membrane 6 is fixed to the collar 12 by the four screws 13. The membrane 6 is thus secured to the frame 8 and to the part 7.
  • the invention is not limited to the embodiment described and shown. It is in particular within the reach of those skilled in the art to produce a waveguide 2 extending beyond the ball bearing 16, with or without a 90 ° bend. It is also possible for it to provide a quarter-wave trap on each of the two facing planar faces.

Landscapes

  • Waveguide Connection Structure (AREA)
  • Waveguide Aerials (AREA)

Claims (9)

1. Vorrichtung zum Koppeln zweier Mikrowellenhohlleiter mit einem feststehenden Gehäuse (8, 7), in das der erste Hohlleiter (1) gebohrt ist, und mit einem Teil (17), in das der zweite Hohlleiter (2) gebohrt ist und das zwischen einer ersten und einer zweiten Stellung um eine Rotationsachse in Drehrichtung beweglich ist, die mit der Längsachse der beiden Hohlleiter (1, 2) zusammenfällt, wobei mindestens eine Viertelwellenfalle an der Verbindungsstelle zwischen den Leitern vorgesehen ist, dadurch gekennzeichnet, daß die Hohlleiter (1, 2) rechteckige Querschnitte haben, daß die Kopplung zwischen dem ersten und dem zweiten Hohlleiter stattfindet, wenn das bewegliche Teil (17) sich in seiner zweiten Stellung befindet, derart, daß der Querschnitt des ersten Hohlleiters (1) mit dem Querschnitt des zweiten Hohlleiters (2) fluchtet, daß das feststehende Gehäuse (8, 7) und das bewegliche Teil (17) je eine ebene, zur Rotationsachse senkrechte Seite (4, 3) besitzen, daß die beiden Hohlleiter (1, 2) in je einer dieser beiden ebenen Seiten (4, 3) münden, daß diese beiden ebenen Seiten (3, 4) durch einen Abstand getrennt sind, der nicht Null und sehr viel kleiner als die Wellenlänge ist, und daß die Viertelwellenfalle (5) in einer dieser Seiten (3,4) angeordnet ist.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die erste ebene Seite (3) durch einen kreisförmigen Rand (10) begrenzt wird, dessen Drehsymmetrieachse mit der Längsachse der beiden Leiter (1, 2) zusammenfällt, daß sie eine Metallmembran (6) in der Form einer kreisförmigen Krone aufweist, deren Innendurchmesser kleiner als der Durchmesser des genannten Rands (10) ist und deren Drehachse mit der Längsachse zusammenfällt, und daß der Rand der Membran (6) um den Ausschnitt herum auf dem genannten Rand (10) aufliegt, wobei die Membran außerdem mit der zweiten Seite (4) fest verbunden ist (12).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Metallmembran (6) gewölbt ist.
4. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der zweite Hohlleiter (2) im Inneren des beweglichen Teils (17) einen Winkel von 90° bildet.
5. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das bewegliche Teil (17) sich in bezug auf das Gehäuse (8) aufgrund zweier Kugellager (11, 16) drehen kann, deren gemeinsame Rotationsachse mit der Längsachse des ersten Hohlleiters (1) zusammenfällt.
6. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Drehung des Teils (17) durch einen Motor bewirkt wird.
7. Vorrichtung nach einem beliebigen der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Drehung des Teils (17) durch eine Feder bewirkt wird.
8. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein Hohlleiterabschnitt (9) mit rechteckförmigem Querschnitt eine Sende-oder Empfangseinrichtung mit dem ersten Hohlleiter (1) verbindet.
9. Vorrichtung nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein Hohlleiterabschnitt (15) mit rechteckförmigem Querschnitt den zweiten Hohlleiter (2) mit einer Antenne verbindet.
EP83400364A 1982-03-05 1983-02-22 Kopplungsvorrichtung zwischen zwei Mikrowellenhohlleiter Expired EP0088664B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203732A FR2522883A1 (fr) 1982-03-05 1982-03-05 Joint pivotant pour guides d'ondes hyperfrequences
FR8203732 1982-03-05

Publications (2)

Publication Number Publication Date
EP0088664A1 EP0088664A1 (de) 1983-09-14
EP0088664B1 true EP0088664B1 (de) 1987-04-08

Family

ID=9271662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400364A Expired EP0088664B1 (de) 1982-03-05 1983-02-22 Kopplungsvorrichtung zwischen zwei Mikrowellenhohlleiter

Country Status (6)

Country Link
US (1) US4625188A (de)
EP (1) EP0088664B1 (de)
JP (1) JPS58166801A (de)
CA (1) CA1194946A (de)
DE (1) DE3370903D1 (de)
FR (1) FR2522883A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5781087A (en) * 1995-12-27 1998-07-14 Raytheon Company Low cost rectangular waveguide rotary joint having low friction spacer system
FR2760131B1 (fr) * 1997-02-24 1999-03-26 Alsthom Cge Alcatel Ensemble d'antennes concentriques pour des ondes hyperfrequences
US6380822B1 (en) * 2000-02-08 2002-04-30 Hughes Electronics Corporation Waveguide switch for routing M-inputs to M of N-outputs
US6563456B1 (en) 2001-10-04 2003-05-13 Yazaki North America, Inc. Flexible wave guide joint
US10290913B2 (en) * 2013-06-19 2019-05-14 Japan Aerospace Exploration Agency Deployment structure comprised of flat panels with waveguides disposed therein, where the flat panels are rotated into engagement with each other to couple the waveguides
WO2022063441A1 (en) * 2020-09-28 2022-03-31 Telefonaktiebolaget Lm Ericsson (Publ) Antenna assembly

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521818A (en) * 1945-02-08 1950-09-12 Walter A Aron Wave guide coupling
US2668191A (en) * 1949-06-30 1954-02-02 Sperry Corp Wave energy polarization converter
US2708263A (en) * 1951-06-29 1955-05-10 Dalmo Victor Company Rotary waveguide joint
US2768358A (en) * 1951-12-11 1956-10-23 Dalmo Victor Company Sealed rotatable joint for radio frequency wave guide
US2837723A (en) * 1953-05-11 1958-06-03 Frank M Krantz Waveguide coupling
US2969513A (en) * 1958-01-09 1961-01-24 Western Electric Co Rotary wave guide joints
DE1065033B (de) * 1958-06-27 1959-09-10 Siemens Ag Scharnierartige Flanschverbindung fuer die einander benachbarten Enden eines feststehenden und eines bewegbaren Hohlleiterabschnitts
GB902128A (en) * 1959-08-19 1962-07-25 Decca Ltd Improvements in or relating to waveguide couplings
GB1084065A (de) * 1965-03-02
GB1347276A (en) * 1971-07-07 1974-02-27 Westland Aircraft Ltd Helicopters
BE792731A (fr) * 1972-09-13 1973-03-30 Elettronica Aster Srl Joint tournant a gradins pour guide d'ondes
FR2363913A2 (fr) * 1976-02-13 1978-03-31 Cgr Mev Piston de court-circuit pour ligne coaxiale hyperfrequence utilisee en haute energie et ligne coaxiale munie d'un tel piston
GB1588228A (en) * 1977-08-26 1981-04-15 Decca Ltd Waveguide switches
SU1209772A1 (ru) * 1984-08-14 1986-02-07 Киевский институт автоматики им.ХХУ съезда КПСС Устройство дл автоматизированного контрол силового режима металлоконструкций машин роторных комплексов

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Circuits pour ondes guidées" Boudouries et Chenivier, édition Dunod, (1975), page 132 *

Also Published As

Publication number Publication date
JPH0254681B2 (de) 1990-11-22
EP0088664A1 (de) 1983-09-14
FR2522883A1 (fr) 1983-09-09
JPS58166801A (ja) 1983-10-03
DE3370903D1 (en) 1987-05-14
FR2522883B1 (de) 1984-04-20
US4625188A (en) 1986-11-25
CA1194946A (en) 1985-10-08

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