EP0995233B1 - Frequenzkonverteranordnung für eine parabolantenne - Google Patents

Frequenzkonverteranordnung für eine parabolantenne Download PDF

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Publication number
EP0995233B1
EP0995233B1 EP99914614A EP99914614A EP0995233B1 EP 0995233 B1 EP0995233 B1 EP 0995233B1 EP 99914614 A EP99914614 A EP 99914614A EP 99914614 A EP99914614 A EP 99914614A EP 0995233 B1 EP0995233 B1 EP 0995233B1
Authority
EP
European Patent Office
Prior art keywords
arrangement
output
converter
input
polarization signals
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
Application number
EP99914614A
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English (en)
French (fr)
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EP0995233A1 (de
Inventor
Kamal Lotfy
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.)
Eutelsat SA
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Eutelsat SA
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Filing date
Publication date
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Publication of EP0995233A1 publication Critical patent/EP0995233A1/de
Application granted granted Critical
Publication of EP0995233B1 publication Critical patent/EP0995233B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • 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
    • H01P1/172—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a dielectric element
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H01Q15/242—Polarisation converters
    • H01Q15/246—Polarisation converters rotating the plane of polarisation of a linear polarised wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Definitions

  • the invention relates to a frequency converter arrangement for parabolic antennas for receiving signals with vertical and horizontal linear polarizations, emitted by two geostationary satellites at a short distance from one another, of the type comprising two frequency converter devices for receiving the signal from a satellite, each device carrying means for orienting the receiving antenna elements in the plane of the received signal and means for adapting to the different elevations of the two satellites, by adjusting the support of the converter devices.
  • the arrangement comprises two converters integrally integral with the same common support adapted to pivot about an axis.
  • the pivoting of the support makes it possible to jointly modify the position of the two converters so as to adjust it with the plane of the signals to be received.
  • this device does not adjust the plane in which the signals are received independently for each converter, so that it does not allow a precise optimization of the reception conditions.
  • each low-noise universal converter is realized, with its vertically or horizontally polarized signal receiving elements, in the form of an autonomous unit and the two converters are mounted on the support, orientable to to be able to be placed in the plane of the signals to be received, the support being itself mobile to ensure the adaptation to the differences in elevation of the two satellites.
  • the object of the invention is to propose a converter arrangement which overcomes the drawbacks of the state of the art.
  • the arrangement according to the invention is characterized in that the output portions of the two converter devices are formed as a single piece while the input parts are separated and mounted selectively orientable on the part. monobloc, the arrangement being rotatably mounted about an axis parallel to the two input parts, according to claim 1.
  • each input part comprises means for converting the linearly polarized signals received into circularly polarized signals and the output part of each device comprises means for converting the circularly polarized signals into digital signals. linear polarization.
  • each input part comprises a waveguide element mounted on an output waveguide element integral with the one-piece part, in axial alignment with and angularly movable relative thereto. .
  • Figure 1 shows a parabolic antenna 1 equipped with a low noise source arrangement 2 according to the present invention.
  • This arrangement is designed to allow the reception of linear, horizontal or vertical, emitted by two geostationary satellites from a relatively small distance from each other.
  • Each satellite may transmit on two frequency bands, a low band from 10.7 GHz to 11.7 GHz and a high band from 11.7 GHz to 12.75 GHz.
  • the converter arrangement converts the total band from 11.7 to 12.75 GHz into a band of 0.950 to 2.150 GHz.
  • the signals thus converted are transmitted to a receiver 3.
  • This receiver can therefore receive signals emitted by the A1 satellite (not shown), with horizontal or vertical linear polarization, situated either in the low band or in the high band and signals from the second A2 satellite (not shown), with horizontal or vertical linear polarization and located either in the low band or in the high band.
  • the user wishes to select a program, he actuates a selector member of the receiver 3 which then selects the satellite A1 or A2, the vertical or horizontal polarization and the low or high band by sending an appropriate selection signal, respectively SA, SP and SB.
  • selection signals control switches provided in the arrangement, as will be seen when describing the structure thereof.
  • the arrangement comprises two low-noise converters 5 and 6, commonly known in the LNB (Low Black Bloc) technique, each comprising a waveguide 7 and 8, respectively.
  • 7 and 8 comprises an input waveguide element 9 and an output waveguide element 10.
  • the elements 10 are fixedly mounted on a support housing 12 which houses the electronic device mounted on a plate 13. This is the output 14 of this plate which is connected by a coaxial cable 15 to the receiver 3.
  • Each input waveguide element 9 is axially aligned with the output member 10 and is angularly movably mounted thereon.
  • the element 10 carries at its front end a flange 17 and the rear end of the element 9 is provided with a flange 18.
  • the assembly of the two elements is done by connecting the two flanges 17, 18 by means of screws 19.
  • the opening of passage of the screws 19 is made in the flange 18 in the form of an arcuate oblong hole 20.
  • Each input waveguide element 9 is provided with vertical or horizontal linear polarization signal converter means in circular polarization signals in either direction of rotation. These converter means are formed by a Teflon blade 22 which extends inside the element 9 in the longitudinal direction thereof. The blade 22 is diagonally fixed in the element 9 by engaging with its longitudinal edges in grooves 23 in the inner face of the element 9. The ends of the Teflon blade 22 are configured dovetail.
  • the two output waveguide elements 10 also house a Teflon blade indicated at 25 which has substantially the same shape as the blade 22 and is mounted in the same manner but angularly offset by 90 °. This plate 25 is a means for converting the circularly polarized signals produced by the wave element 9 into vertical or horizontal linear polarization signals.
  • the output waveguide element 10 At the rear end of the output waveguide element 10 are provided, as is more clearly seen in FIG. 4, two antenna elements 27, 28 in the form of radially inwardly projecting points. of the inner face of the element 10, while being angularly offset by 90 °.
  • the element 27 extends horizontally and serves to receive the horizontally polarized signals while the element 28 is oriented vertically for the reception of the vertically polarized signals.
  • each converter device 5, 6 are connected via an amplifier 30 to an input of a bias switch 32 whose output is connected via an amplifier 33 to one of the two inputs of a position switch 35.
  • An amplifier 36 connects the output of the latter to the input of a divider 37 which has a first output circuit comprising a mixer 38 which is associated with a local oscillator 39 and an amplifier 40 and a second output circuit which comprises a mixer assembly 41 - local oscillator 42 followed by an amplifier 43.
  • the local oscillator 39 produces a signal of 9.75 GHz and the oscillator 42 another signal of 10.6 GHz.
  • Each output circuit is connected to one of the two inputs of a frequency band switch 44 whose output is connected to the output terminal 14 of the arrangement which, on the other hand, is connected by the coaxial cable 15 to the receiver 3 .
  • the plane of the signals of the satellite A1 or A2 coincides with the orientation of the antenna elements 27, 28 of the converter 5 or 6.
  • the adjustment is done by rotation according to the appropriate angle of the input waveguide element 9 of each converter.
  • the angular position of the support housing 12 is also adjusted according to the different elevations of the two antennas, by rotation of the arrangement about an axis parallel to the input portions 9.
  • each program is identified by the satellite A1 or A2 which transmits it, by the type of polarization which is vertical or horizontal and by the low or high frequency band which the program occupies.
  • the receiver 3 switches the bias switch 32 of the appropriate converter to the type of polarization of the program signals. This switching is effected by sending the appropriate polarization selection signal SP, namely a continuous signal of 12 volts if the polarization is vertical or an 18 volts signal if the polarization is horizontal. Then, after a predetermined delay the receiver selects the satellite A1, A2. This selection is made by sending or not sending a number of successive bursts of oscillations, constituting the signal SA of 22 kHz depending on whether the program is broadcast by either satellite.
  • the receiver tunes to the frequency band, sending the frequency band selection signal SB to the switch 43 as a modulation signal of 0 or 22 kHz .
  • the command which has just been described, is known under the terms of DiSEqC (digital control of satellite reception devices).
  • the arrangement of the universal converter block according to the invention is particularly suitable for satellite reception distant from each other by 6 degrees.
  • the arrangement can be used with antennas with a diameter of 80 cm and an F / D ratio of 0.6.
  • the source arrangement is mounted on the antenna arm to allow relative elevation adjustment of one converter relative to the other by +/- 4 degrees.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Television Scanning (AREA)
  • Radio Relay Systems (AREA)

Claims (4)

  1. Frequenzwandleranordnung für eine Parabolantenne zum Empfang von vertikal und horizontal linear polarisierten Signalen, die von zwei geostationären Satelliten gesendet werden, die sich in geringem Abstand voneinander befinden, wobei diese Anordnung zwei Wandler (5, 6), die jeweils Antennenelemente (27, 28) zum Empfang eines Signals von einem der Satelliten umfassen, wobei diese beiden Wandler (5, 6) auf einer Auflage (12) montiert sind, die um eine zu den Wandlern (5, 6) parallele Achse drehbar ist, um sich den verschiedenen Höhen der beiden Satelliten durch Drehen um diese Achse anzupassen, und Mittel (9) zum Anpassen der Ebenen der durch die Antennenelemente (27, 28) empfangenen Signale mit diesen Antennenelementen umfasst, wobei jeder Wandler (5, 6) einen Eingangsteil (9) und einen Ausgangsteil (10), über den er an der Auflage (12) befestigt ist, umfasst, und wobei der Eingangsteil (9) jedes Wandlers (5, 6) im Verhältnis zu dem Ausgangsteil (10) schwenkbar montiert ist, wobei der Eingangsteil durch seine wählbare Schwenkbarkeit ein unabhängiges Anpassungsmittel bildet, wobei die beiden Ausgangsteile (10, 13) der beiden Wandlervorrichtungen (5, 6) in Form eines gemeinsamen Teils (12) ausgebildet sind, und die Eingangsteile (9) getrennt sind.
  2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass jeder Eingangsteil einer Wandlervorrichtung (5, 6) Mittel (22) umfasst, um die empfangenen linear polarisierten Signale in kreisförmig polarisierte Signale zu wandeln, und der Ausgangsteil (10) Mittel (25) umfasst, um die kreisförmig polarisierten Signale in linear polarisierte Signale zu wandeln.
  3. Anordnung nach Anspruch 2, dadurch gekennzeichnet, dass jeder Eingangsteil (9) ein wellenleiterelement umfasst, das auf einem Ausgangswellenleiterelement (10) montiert ist, das mit dem gemeinsamen Teil einstückig ist (12), wobei es axial mit dem Ausgangselement fluchtet und dazu im Winkel beweglich ist.
  4. Anordnung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die Wandlermittel aus einer vorteilhaft aus Teflon bestehenden Platte (22, 25), die in einer Durchmesserebene des Eingangs- oder Ausgangswellenleiterelements (9, 10) montiert ist, gebildet werden, wobei letzteres von der Art mit kreisförmigem Querschnitt ist.
EP99914614A 1998-04-20 1999-04-19 Frequenzkonverteranordnung für eine parabolantenne Expired - Lifetime EP0995233B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9804927A FR2777700B1 (fr) 1998-04-20 1998-04-20 Agencement de convertisseur de frequences pour antennes parabolique
FR9804927 1998-04-20
PCT/FR1999/000918 WO1999054958A1 (fr) 1998-04-20 1999-04-19 Agencement de convertisseur de frequences pour antennes paraboliques

Publications (2)

Publication Number Publication Date
EP0995233A1 EP0995233A1 (de) 2000-04-26
EP0995233B1 true EP0995233B1 (de) 2006-01-25

Family

ID=9525450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99914614A Expired - Lifetime EP0995233B1 (de) 1998-04-20 1999-04-19 Frequenzkonverteranordnung für eine parabolantenne

Country Status (16)

Country Link
US (1) US6344832B1 (de)
EP (1) EP0995233B1 (de)
JP (1) JP2002505831A (de)
CN (1) CN1157822C (de)
AT (1) ATE316695T1 (de)
AU (1) AU3336399A (de)
BR (1) BR9906340A (de)
CA (1) CA2292423A1 (de)
DE (1) DE69929591D1 (de)
EA (1) EA002005B1 (de)
FR (1) FR2777700B1 (de)
ID (1) ID23911A (de)
IL (1) IL133221A (de)
PL (1) PL337210A1 (de)
TR (1) TR199903161T1 (de)
WO (1) WO1999054958A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3562985B2 (ja) * 1999-01-27 2004-09-08 アルプス電気株式会社 衛星放送受信用コンバータ
SE516053C2 (sv) 2000-03-03 2001-11-12 Fayek Ashoor Satellitmottagare
JP2003101306A (ja) 2001-09-21 2003-04-04 Alps Electric Co Ltd 衛星放送受信用コンバータ
JP3923405B2 (ja) * 2002-10-09 2007-05-30 シャープ株式会社 低雑音コンバータ
EP1554824A1 (de) * 2002-10-23 2005-07-20 Thomson Licensing S.A. Vorrichtung zum verteilen von funksignalen und empfangssystem, das eine solche vorrichtung enthält
US7016643B1 (en) 2003-01-10 2006-03-21 The Directv Group, Inc. Antenna positioning system and method for simultaneous reception of signals from a plurality of satellites
US6693587B1 (en) * 2003-01-10 2004-02-17 Hughes Electronics Corporation Antenna/feed alignment system for reception of multibeam DBS signals
US7286795B2 (en) * 2003-07-23 2007-10-23 Mds America, Inc. System and method for effective reception and transmission of satellite signals
US6967619B2 (en) * 2004-01-08 2005-11-22 Kvh Industries, Inc. Low noise block
ES2572884T3 (es) * 2008-03-20 2016-06-02 Ses Astra S.A. Transceptor de satélite
JP4820384B2 (ja) * 2008-04-15 2011-11-24 三菱電機株式会社 アンテナ装置
TWI478484B (zh) 2011-09-19 2015-03-21 Richwave Technology Corp 多輸入多輸出低雜訊降頻器及低雜訊模組
CN106207460B (zh) * 2016-08-23 2023-07-07 郴州世通科技有限公司 多卫星接收夹具及天线系统

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NL180623C (nl) * 1977-01-12 1987-08-17 Philips Nv Belichter voor een antenne.
DE3108758A1 (de) * 1981-03-07 1982-09-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Mikrowellen-empfangseinrichtung
US5305001A (en) * 1992-06-29 1994-04-19 Hughes Aircraft Company Horn radiator assembly with stepped septum polarizer
WO1995006963A1 (fr) * 1993-08-30 1995-03-09 Souren Parisovich Herouni Systeme d'antenne
WO1996002953A1 (en) * 1994-07-20 1996-02-01 Commonwealth Scientific And Industrial Research Organisation Feed movement mechanism and control system for a multibeam antenna
US5812096A (en) 1995-10-10 1998-09-22 Hughes Electronics Corporation Multiple-satellite receive antenna with siamese feedhorn
FR2745661A1 (fr) * 1996-02-29 1997-09-05 Texas De France Commutateur pour tete universelle d'antenne parabolique
US6121939A (en) * 1996-11-15 2000-09-19 Yagi Antenna Co., Ltd. Multibeam antenna
US6111547A (en) * 1998-10-13 2000-08-29 Texas Instruments-Acer Incorporated Modularized multiple-feed electromagnetic signal receiving apparatus

Also Published As

Publication number Publication date
TR199903161T1 (xx) 2000-11-21
IL133221A (en) 2003-10-31
EP0995233A1 (de) 2000-04-26
EA002005B1 (ru) 2001-10-22
CN1157822C (zh) 2004-07-14
CA2292423A1 (en) 1999-10-28
IL133221A0 (en) 2001-03-19
AU3336399A (en) 1999-11-08
ATE316695T1 (de) 2006-02-15
EA199901018A1 (ru) 2000-08-28
JP2002505831A (ja) 2002-02-19
BR9906340A (pt) 2000-09-19
CN1263640A (zh) 2000-08-16
DE69929591D1 (de) 2006-04-13
US6344832B1 (en) 2002-02-05
ID23911A (id) 2000-05-25
PL337210A1 (en) 2000-08-14
FR2777700A1 (fr) 1999-10-22
FR2777700B1 (fr) 2000-07-07
WO1999054958A1 (fr) 1999-10-28

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