EP0319753A1 - Système d'excitation respectivement d'alimentation pour une antenne parabolique - Google Patents

Système d'excitation respectivement d'alimentation pour une antenne parabolique Download PDF

Info

Publication number
EP0319753A1
EP0319753A1 EP88119185A EP88119185A EP0319753A1 EP 0319753 A1 EP0319753 A1 EP 0319753A1 EP 88119185 A EP88119185 A EP 88119185A EP 88119185 A EP88119185 A EP 88119185A EP 0319753 A1 EP0319753 A1 EP 0319753A1
Authority
EP
European Patent Office
Prior art keywords
phase shifter
excitation
component
feed system
vector
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.)
Granted
Application number
EP88119185A
Other languages
German (de)
English (en)
Other versions
EP0319753B1 (fr
Inventor
Anton Dipl.-Ing. Ilsanker
Norbert Dr. Dipl.-Ing. Ephan
Hartmut Dipl.-Ing. Wittmann
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.)
Kathrein SE
Original Assignee
Kathrein Werke KG
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 Kathrein Werke KG filed Critical Kathrein Werke KG
Priority to AT88119185T priority Critical patent/ATE93657T1/de
Publication of EP0319753A1 publication Critical patent/EP0319753A1/fr
Application granted granted Critical
Publication of EP0319753B1 publication Critical patent/EP0319753B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation 
    • 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
    • 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
    • H01Q13/02—Waveguide horns
    • H01Q13/0241—Waveguide horns radiating a circularly polarised wave

Definitions

  • the invention relates to an excitation or feed system, in particular for a parabolic antenna for receiving or transmitting linear and / or circularly polarized electromagnetic waves according to the preamble of claim 1.
  • the installation of such receiving antennas also requires exact alignment of the antenna in terms of its polarization to ensure the separation between the different channels. Since the television broadcasting satellites are adjusted geostationarily in space, the orientation with regard to the linear polarization can be preselected once, which doesn't change then. If the antenna is to be swiveled to another satellite, this can be done with a so-called polar mount. This is an antenna structure in which the polar circle is traversed when the antenna is adjusted and aligned with another geostationary satellite, so that the orthogonal polarizations are automatically maintained.
  • the current generation of broadcasting satellites also send and receive circular polarizations. Double frequency utilization is also possible here, since opposite circular polarizations are possible.
  • Antennas for double polarization operation would, however, have to have a particularly good polarization separation so that a sufficient decoupling between the channels of the same frequency is possible.
  • two excitation or feed systems with four subsequent converters must therefore be provided.
  • the two linearly polarized and the oppositely circularly polarized electromagnetic waves are received via a respective feed system, and the one converter mentioned is required for each polarization.
  • both 90 ° polarizations must be freely adjustable.
  • both polarizers are each seated on an adjusting axis which is concentric to one another and which can accordingly be actuated, as a rule by means of an electric motor, and brought into a desired angular position with respect to the vertical or horizontal or with respect to one another.
  • an excitation or feed system is created in a simple manner, in which two linear polarizations which are perpendicular to one another and also two opposite circular polarizations can be received, using only one microwave converter.
  • a single lamina must now be oriented differently in its setting position with respect to the vertical or horizontal in order to be able to feed in or transmit the different polarizations.
  • this is achieved by using a subordinate 180 ° phase shift plate lying in the receiving direction.
  • the first 90 ° phase plate is firmly and rigidly installed and aligned.
  • the 90 ° plate does not cause any spatial rotation, but only a phase shift of the linearly polarized wave.
  • a circularly polarized wave hitting the 90 ° plate is converted into a linearly polarized wave, the vector of which, depending on the direction of rotation of the circularly polarized wave, is rotated by ⁇ 45 ° against the orientation of the plate.
  • the following 180 ° plate now serves to spatially rotate the e-vector appearing at the output of the 90 ° plate, depending on the orientation (0 °, 90 °, + 45 °, -45 °), so that the Vector always has a constant direction, to which the converter coupling is then set.
  • phase-shifting dielectric plates instead of the phase-shifting dielectric plates mentioned, other construction measures, for example in the manner of a waveguide constriction, can of course also be used to carry out the desired phase shift.
  • Horn 1 is shown in the schematic longitudinal cross section, as it is generally used in cooperation with a parabolic antenna for transmitting or for receiving electromagnetic waves.
  • the horn 1 is constructed in the manner of a waveguide radiator.
  • a waveguide 5 connects to the front, for example, funnel-shaped extension 3, which is terminated at the rear with a short circuit 7.
  • a waveguide section 9 is shown in the exemplary embodiment shown, which leads, for example, to a converter (not shown).
  • polarizer 15 In the excitation or feed system, a so-called polarizer 15 is first rigidly installed in the receiving direction adjacent to the funnel-shaped extension 3, which must be aligned perpendicularly or parallel to the E-vector.
  • the polarizer consists, for example, of a dielectric Platelet, which brings about an at least approximately 90 ° phase shift for the E-vector in the frequency range, for example 11.7 to 12.5 GHz.
  • This polarizer 15 is followed by a so-called polarization converter 17 in the direction of reception of the electromagnetic waves, which, for example, causes a 180 ° phase shift for the E-vector for the frequency range from 10.95 to 12.75 GHz in accordance with the following explanations.
  • This polarization converter 17 can be pivoted about its longitudinal axis 19 at least in a partial angular range.
  • the longitudinal axis can protrude through the rear short circuit 7, where a motor drive (not shown in more detail), as a rule electromotive, is located, for which the polarization converter 17 can be pivoted into predetermined angular positions.
  • FIG. 2a A vertical linear polarization is illustrated in FIG. 2a by a vertically oriented e-vector 21.
  • the e-vector 21 Since the e-vector 21 is oriented transversely to the polarizer 15, this has no influence on the spatial orientation of the e-vector.
  • the downstream polarization converter 17 is aligned parallel to the E vector. In addition to a certain, slight, negligible damping, the polarization converter 17 causes no changes, so that the vertical position of the E-vector 21 ⁇ also after the polarization converter 17 parallel to the position of the E-vector 21 'after or the E-vector 21 before Polarizer 15 remains unchanged.
  • FIG. 2b a linear polarization orthogonal to FIG. 2a with an E vector 21 lying horizontally is explained.
  • the polarizer 15 lying parallel to this likewise only leads to a negligible attenuation without the E-vector 21 being changed in its spatial position.
  • the downstream polarization converter 17, with a corresponding orientation of 45 °, causes a reflection of the horizontal E-vector 21 'in the vertical position, so that this polarization 17 also has the same position at the output as in Fig. 2a.
  • the component of the disassembled E-vector 21 lying perpendicular to the plane of the polarization converter 17 is now countered phase-shifted by 180 ° over the component perpendicular thereto, so that this component now assumes the position shown in FIG. 4b.
  • the component lying parallel to the plane of the polarization converter 17 remains unchanged, so that the sum of the two components now results in the e-vector 21 ⁇ rotated by 90 °.
  • FIG. 2c shows the case when a circularly polarized wave is received. Since the circularly polarized wave is caused by the fact that the E-vector is phase-shifted by 90 ° with respect to two mutually perpendicular axes, a 90-degree phase shifter in the manner of the polarizer 15 is always a phase shift of the E-vector component in the plane of this plate 90 ° cause so that the two orthogonal components of the E-vector after the polarizer 15 are in the same phase with each other and thus a 45 ° rotated to the plane of the polarizer linear E-vector 21 'is generated.
  • the downstream polarization converter 17, is pivoted in the opposite direction by 22.5 ° to the vertical, as is shown enlarged on the basis of FIG. 5a.
  • the linear e-vector 21 ' which is aligned by 45 ° to the vertical, gives a component decomposition, as shown in dashed lines in Fig. 5a. Since again only the smaller component of the E-vector 21 'is phase-shifted in the plane of the polarization converter 17 by 180 °, the phase shift of this component leads to an E-vector 21 ⁇ , which now assumes an exactly vertical position.
  • the linear E vectors In general, in a polarization converter with a 180 ° phase shift - as can also be seen in principle from FIGS. 4 and 5 - the linear E vectors always mirrored around the plane of the polarization converter, whereby the orthogonality of two vertical incoming E-vectors in relation to the outgoing E-vectors is maintained.
  • Fig. 2d relates to the case opposite to Fig. 2c in the case of an opposite circular polarization, which is first via the polarizer 15 in a linearly polarized E-vector 21 'oriented at -45 ° to the vertical and then via the opposite direction to Fig. 5a 22.5 ° adjusted plane of the polarization converter 17 also leads to a vertically oriented e-vector 21 ⁇ .
  • a horizontal output vector can also be achieved for all four input polarizations, as can be seen from FIGS. 3a to 3d.
  • the front polarizer 15 can also be brought into a stationary vertical position instead of the horizontal position. This has no fundamental influence and leads to the same results.
  • the maximum pivoting angle range for the plane of the polarization converter 17 only has to range from + 45 ° to -22.5 ° or from -45 ° to + 22.5 °, ie 67 Does not exceed 5 °.
  • Corresponding exact retrieval of one of the explained angle settings can be reproduced by operating the motor drive via certain presettable locking points.
  • the dielectric platelet for the polarization converter 17 can, for example, be approximately twice as long as the polarizer 15 with the same thickness.
  • both components 15 and 17 could also have approximately the same length and size, in which case then As a rule, the thickness of the polarization converter 17 is approximately twice as large as the thickness of the polarizer 15, in order thereby to bring about a phase shift which is twice as great, namely by 180 ° compared to 90 ° for the polarizer 15.
  • phase shifter component can also be used as the polarizer 15, which produces a phase shift that is 180 ° larger, for example 270 °. All other phase shifts that are larger by 180 ° ultimately only result in a basic phase shift of 90 °. In addition, larger phase shifts do not make sense, since these also only result in a 90 ° phase shift in terms of their end effect with only greater damping.

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
EP88119185A 1987-12-08 1988-11-18 Système d'excitation respectivement d'alimentation pour une antenne parabolique Expired - Lifetime EP0319753B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119185T ATE93657T1 (de) 1987-12-08 1988-11-18 Erreger- bzw. speisesystem fuer eine parabolantenne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3741501 1987-12-08
DE3741501A DE3741501C1 (de) 1987-12-08 1987-12-08 Erreger- bzw. Speisesystem fuer eine Parabolantenne

Publications (2)

Publication Number Publication Date
EP0319753A1 true EP0319753A1 (fr) 1989-06-14
EP0319753B1 EP0319753B1 (fr) 1993-08-25

Family

ID=6342089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119185A Expired - Lifetime EP0319753B1 (fr) 1987-12-08 1988-11-18 Système d'excitation respectivement d'alimentation pour une antenne parabolique

Country Status (3)

Country Link
EP (1) EP0319753B1 (fr)
AT (1) ATE93657T1 (fr)
DE (2) DE3741501C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433092A2 (fr) * 1989-12-14 1991-06-19 Sharp Kabushiki Kaisha Convertisseur de polarisation avec deux dispositifs de conversion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920563A1 (de) * 1989-06-23 1991-01-10 Mueller Heinz Juergen Dipl Ing Erreger- bzw. speisesystem fuer eine parabolantenne
DE4437595A1 (de) * 1994-10-20 1996-05-30 Pt Komtelindo Adipratama Wellenleiter-Septum-Phasenschieber
DE19912262A1 (de) * 1999-03-18 2000-10-12 Kathrein Werke Kg Erreger- oder Speisevorrichtung, insbesondere für eine Satellitenantenne
DE102016112581A1 (de) * 2016-07-08 2018-01-11 Lisa Dräxlmaier GmbH Phasengesteuerte Gruppenantenne
DE102016112583A1 (de) 2016-07-08 2018-01-11 Lisa Dräxlmaier GmbH Steuerbares Phasenstellglied für elektromagnetische Wellen
RU2650719C1 (ru) * 2017-04-03 2018-04-17 Федеральное государственное унитарное предприятие Ордена Трудового Красного Знамени научно-исследовательский институт радио Разделитель ортогонально-поляризованных волн

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014399A (en) * 1978-02-08 1979-08-22 Kokusai Denshin Denwa Co Ltd Cross polarization compensation system
FR2442518A1 (fr) * 1978-11-27 1980-06-20 Sits Soc It Telecom Siemens Dispositif pour relever l'erreur de pointage de l'antenne dans un systeme de telecommunications
US4264908A (en) * 1979-03-06 1981-04-28 Nasa Adaptive polarization separation
US4353041A (en) * 1979-12-05 1982-10-05 Ford Aerospace & Communications Corp. Selectable linear or circular polarization network
EP0073258A1 (fr) * 1981-08-27 1983-03-09 Mitsubishi Denki Kabushiki Kaisha Dispositif de détection d'écart angulaire
EP0196081A2 (fr) * 1985-03-27 1986-10-01 SELENIA SPAZIO S.p.A. Dispositif d'addition d'énergie sans perte d'énergie d'au moins deux émetteurs aux hyperfréquences dont les rapports des puissances sont quelconques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014399A (en) * 1978-02-08 1979-08-22 Kokusai Denshin Denwa Co Ltd Cross polarization compensation system
FR2442518A1 (fr) * 1978-11-27 1980-06-20 Sits Soc It Telecom Siemens Dispositif pour relever l'erreur de pointage de l'antenne dans un systeme de telecommunications
US4264908A (en) * 1979-03-06 1981-04-28 Nasa Adaptive polarization separation
US4353041A (en) * 1979-12-05 1982-10-05 Ford Aerospace & Communications Corp. Selectable linear or circular polarization network
EP0073258A1 (fr) * 1981-08-27 1983-03-09 Mitsubishi Denki Kabushiki Kaisha Dispositif de détection d'écart angulaire
EP0196081A2 (fr) * 1985-03-27 1986-10-01 SELENIA SPAZIO S.p.A. Dispositif d'addition d'énergie sans perte d'énergie d'au moins deux émetteurs aux hyperfréquences dont les rapports des puissances sont quelconques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433092A2 (fr) * 1989-12-14 1991-06-19 Sharp Kabushiki Kaisha Convertisseur de polarisation avec deux dispositifs de conversion
EP0433092A3 (en) * 1989-12-14 1991-11-13 Sharp Kabushiki Kaisha Polarization converter having two converting devices therein

Also Published As

Publication number Publication date
ATE93657T1 (de) 1993-09-15
DE3741501C1 (de) 1989-02-02
EP0319753B1 (fr) 1993-08-25
DE3883498D1 (de) 1993-09-30

Similar Documents

Publication Publication Date Title
DE69111298T2 (de) Antenne für duale linear und dual zirkulare Polarisation.
DE60131581T2 (de) Terminal mit phasengesteuerten Gruppenantennen für äquatoriale Satellitenkonstellationen
DE60310481T2 (de) Multiband-Hornstrahler
DE68906016T2 (de) Antennensystem mit richtkeulenabtaster in azimut und einer auswaehlbaren polarisation.
DE102007050724A1 (de) Dual polarisierte mehrfaserige Antenne
DE3201454A1 (de) Vorrichtung zum koppeln linear polarisierter elektromagnetischer wellen
DE2729651C2 (de) Antenne für eine durch die Ionosphäre führende Funkverbindung mit einem Polarisationsdreher
DE102015108154B4 (de) Zweikanalige Polarisationskorrektur
EP0319753B1 (fr) Système d'excitation respectivement d'alimentation pour une antenne parabolique
DE2800101A1 (de) Strahler fuer eine antenne, u.a. fuer satellitensignale
DE1942678A1 (de) Anordnung zur Signalspeisung bei einer in mehreren Modes arbeitenden Einzelimpulsanlage
DE3785120T2 (de) Primär-Empfangseinheit für polarisierte Mikrowellen, Parabolantenne und Empfangsstelle mit solcher Einheit.
DE2131130C3 (de) Vorrichtung zur Erzeugung eines Steuersignals zum Ausrichten einer Antenne
DE2812575A1 (de) Phasengesteuertes antennenfeld
DE10195823B3 (de) Antennenelement, Transceiver und Verfahren zum Betreiben eines Transceivers
DE1909205A1 (de) Zylinderfoermiges Antennensystem mit elektronischer Rotation des Strahlungsdiagrammes
EP3482457B1 (fr) Antenne réseau à commande de phase
DE2041299A1 (de) Drehbare Richtantenne
DE3920563C2 (fr)
DE2626926C2 (de) Hohlleiterprimärstrahler mit rechteckigem Querschnitt für eine Reflektorantenne mit Strahlschwenkung
EP0200819A2 (fr) Antenne réseau
DE102017128631B4 (de) Vorrichtung zum empfangen von linear polarisierten satellitensignalen
DE1086306B (de) Vorrichtung zur Einstellung der Elliptizitaet der Polarisation der von einem Radargeraet ausgesandten Strahlung
DE68922682T2 (de) Verfahren zum Abgeben elektromagnetischer Leistung von einem Antennenelement.
DE4124719A1 (de) Satelliten-empfangssystem

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19890705

17Q First examination report despatched

Effective date: 19920310

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19930825

Ref country code: SE

Effective date: 19930825

Ref country code: GB

Effective date: 19930825

Ref country code: BE

Effective date: 19930825

Ref country code: FR

Effective date: 19930825

Ref country code: NL

Effective date: 19930825

REF Corresponds to:

Ref document number: 93657

Country of ref document: AT

Date of ref document: 19930915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3883498

Country of ref document: DE

Date of ref document: 19930930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931130

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930825

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19941122

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19941219

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19951118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19951130

Ref country code: LI

Effective date: 19951130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071018

Year of fee payment: 20