EP0124047A2 - Antenne de réception omnidirectionnelle - Google Patents

Antenne de réception omnidirectionnelle Download PDF

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Publication number
EP0124047A2
EP0124047A2 EP84104497A EP84104497A EP0124047A2 EP 0124047 A2 EP0124047 A2 EP 0124047A2 EP 84104497 A EP84104497 A EP 84104497A EP 84104497 A EP84104497 A EP 84104497A EP 0124047 A2 EP0124047 A2 EP 0124047A2
Authority
EP
European Patent Office
Prior art keywords
antenna
adjustable
phase shifter
amplifier
antennas
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Withdrawn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
EP84104497A
Other languages
German (de)
English (en)
Other versions
EP0124047A3 (fr
Inventor
Axel Stark
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co 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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Publication of EP0124047A2 publication Critical patent/EP0124047A2/fr
Publication of EP0124047A3 publication Critical patent/EP0124047A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • 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 

Definitions

  • the invention relates to a broadcast antenna according to the preamble of the main claim.
  • a turnstile antenna consisting of two crossed horizontal dipoles with a vertical antenna on a mast (antennas HE 002 and HE 001 from Rohde & Schwarz, Radiomentor-Elektronik 1974, issue 10, page 390).
  • the two separate antennas are not electrically interconnected here but can be connected separately to a receiver input depending on the desired reception conditions.
  • this known antenna system has a reception possibility from all directions with any polarization.
  • the invention is based on the knowledge that an antenna system known per se, consisting of a horizontal turnstile antenna and a vertical antenna when electrically connecting these two separate antennas, has a spatial hemispherical reception diagram for any polarization and only has a funnel-shaped saddle in a certain elevation in a certain elevation has, namely where the merged output signals of the two antennas are 180 ° out of phase with respect to one another and therefore cancel each other out and in the elevation where the vertical diagram of the turnstile antenna is opposite to the vertical diagram of the rod antenna.
  • the measure according to the invention of interposing an adjustable phase shifter and an adjustable amplifier or attenuator between the two antenna outputs ensures that this spatial funnel-shaped zero of the spatial hemispherical omnidirectional diagram both in azimuth and in FIG Elevation can be precisely aligned to a possible jamming transmitter and the reception of these jamming signals can thereby be masked out, while the antenna system in the rest of the area has optimal broadcast reception properties for useful signals of any polarization.
  • the azimuth is set here by the phase shifter and the elevation by the amplifier or the attenuator.
  • both settings are independent of each other, via the intermediate amplifier ker or the attenuator, the size of the received signals of the two antennas can be set separately from one another and in this way the vertical diagram of the vertical antenna and the vertical diagram of the turnstile antenna can be changed independently of one another.
  • an omnidirectional antenna for the optimal reception of signals of any polarization and the optimal suppression of interference radiation incident from any direction and elevation is created, i.e. one Antenna system that optimally solves the task mentioned at the beginning.
  • FIG. 1 shows the basic circuit diagram of an omnidirectional receiving antenna according to the invention, consisting of an active turnstile antenna 1 and a vertical active rod antenna 2.
  • the turnstile antenna consists of two horizontal dipoles 3 and 4 crossed at 90 °, which are arranged in one plane for reasons of clarity in the figure are shown, but in reality they are arranged spatially crossed horizontally above the floor.
  • the outputs of the two horizontal dipoles 3 and 4 are connected in a known manner via a phase shifter 5 at 90 0- phase shift and to the input of a receiver. 6
  • the output of the rod antenna 2 is also connected to the input of the receiver 6 via an adjustable phase shifter 7 and an adjustable amplifier 8 or an adjustable attenuator.
  • the received signal of the turnstile antenna 1 receives a phase shift within the turnstile antenna which is proportional to the azimuth angle of the incident wave.
  • the rod antenna 2 generates a reception voltage at its output, the phase of which is independent of the azimuth angle of the received wave. If the phase of a specific signal received via antenna 2 is 180 ° out of phase with the signal of the turnstile antenna received from a specific direction, this signal is extinguished if the amplitude is equal.
  • the phase shifter 7 can thus be used for any azimuth angle to extinguish the rich direction received signals are set, for all other azimuth directions, however, the antenna according to the invention has optimal reception properties, since for other azimuth angles of the turnstile antenna there is a phase shift deviating from 180 ° with respect to the signal of the rod antenna and the signals therefore do not cancel each other out. In this way, an interference signal incident from a specific azimuth angle can be suppressed and the antenna according to the invention then receives the useful signals incident from other directions only with optimal properties.
  • the phase shifter 7 could of course just as well be arranged in the connecting line between the turnstile antenna 1 and the interconnection point of the two antennas; the only important thing is that a relative phase shift between the output signals of the antennas 1 and 2 can be set.
  • a symmetrical vertical dipole could also be used.
  • the vertical diagram of the turnstile antenna 1 is just opposite to the vertical diagram of the rod antenna 2, as shown in FIG.
  • the zero 10 of the radiation diagram can be pivoted in elevation independently of the azimuth, as is indicated schematically by dashed lines for a corresponding damping of the vertical diagram of the two antennas 1 and 2 in FIG and whereby the zero 10 of the elevation between the angular ranges 11, 12 and 13 can be changed.
  • This can be achieved by the additionally provided adjustable amplifier 8 or an appropriately adjustable attenuator, which in turn could just as well be arranged in the feed line to the turnstile antenna 1.
  • the phase shifter 7 or the device 8 for influencing the amplitude of the received signals can either be installed directly at the base of the antennas 1 or 2, but they can also be accommodated in remote devices, for example in the receiver 6 or in the feed line thereto, but before the interconnection point of the Antennas 1 and 2.
  • the latter is advantageous, for example, for retrofitting an existing antenna system or when several receivers are connected to a common antenna system.
  • phase shift or adjustment of the damping or amplification can be carried out by the user by hand, but automation is also possible if appropriate criteria for

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP84104497A 1983-04-21 1984-04-19 Antenne de réception omnidirectionnelle Withdrawn EP0124047A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3314387 1983-04-21
DE19833314387 DE3314387A1 (de) 1983-04-21 1983-04-21 Rundempfangsantenne

Publications (2)

Publication Number Publication Date
EP0124047A2 true EP0124047A2 (fr) 1984-11-07
EP0124047A3 EP0124047A3 (fr) 1986-06-11

Family

ID=6196928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104497A Withdrawn EP0124047A3 (fr) 1983-04-21 1984-04-19 Antenne de réception omnidirectionnelle

Country Status (2)

Country Link
EP (1) EP0124047A3 (fr)
DE (1) DE3314387A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001340A1 (fr) * 1984-08-20 1986-02-27 Österreichisches Forschungszentrum Seibersdorf Gmb Construction d'antenne
DE19751122A1 (de) * 1997-11-19 1999-05-20 Cit Alcatel Antennenanlage und Verfahren zum Betreiben einer Antennenanlage
WO1999062138A1 (fr) * 1998-05-27 1999-12-02 Kathrein-Werke Kg Reseau d'antennes a plusieurs modules excitateurs superposes
FR2781087A1 (fr) * 1998-07-08 2000-01-14 Dassault Electronique Dispositif d'emission et/ou de reception de signaux electromagnetiques, a antenne adaptative a diagramme etendu
EP1710860A3 (fr) * 2005-01-07 2006-12-27 Agc Automotive Americas R&D, Inc. Antenne de balayage de faisceau à plusieurs éléments d' antennes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2165665C1 (ru) * 2000-07-24 2001-04-20 Закрытое Акционерное Общество "Транзас" Антенно-приемопередающая система радиолокационной станции

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354459A (en) * 1965-08-05 1967-11-21 Devenco Inc Tri-orthogonal antenna system with variable effective axis
DE2032002A1 (de) * 1970-06-29 1972-01-20 Licentia Gmbh Antennensystem
GB2011726A (en) * 1977-11-22 1979-07-11 British Aircraft Corp Ltd Aerial Systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354459A (en) * 1965-08-05 1967-11-21 Devenco Inc Tri-orthogonal antenna system with variable effective axis
DE2032002A1 (de) * 1970-06-29 1972-01-20 Licentia Gmbh Antennensystem
GB2011726A (en) * 1977-11-22 1979-07-11 British Aircraft Corp Ltd Aerial Systems

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RADIO MENTOR, Band 31, Nr. 7, Juli 1965, Seiten 573-575; F. SCHEUERECKER: "Eine Kurzwellen-Empfangsantenne mit w{hlbarer Polarisation" *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001340A1 (fr) * 1984-08-20 1986-02-27 Österreichisches Forschungszentrum Seibersdorf Gmb Construction d'antenne
DE19751122A1 (de) * 1997-11-19 1999-05-20 Cit Alcatel Antennenanlage und Verfahren zum Betreiben einer Antennenanlage
WO1999062138A1 (fr) * 1998-05-27 1999-12-02 Kathrein-Werke Kg Reseau d'antennes a plusieurs modules excitateurs superposes
US6339407B1 (en) 1998-05-27 2002-01-15 Kathrein-Werke Kg Antenna array with several vertically superposed primary radiator modules
AU751894B2 (en) * 1998-05-27 2002-08-29 Kathrein-Werke Kg Antenna array with several vertically superposed primary radiator modules
KR100697942B1 (ko) * 1998-05-27 2007-03-20 카트라인-베르케 카게 수직 중첩된 다수의 1차 안테나 모듈을 지닌 안테나 어레이
FR2781087A1 (fr) * 1998-07-08 2000-01-14 Dassault Electronique Dispositif d'emission et/ou de reception de signaux electromagnetiques, a antenne adaptative a diagramme etendu
WO2000003455A1 (fr) * 1998-07-08 2000-01-20 Thomson Csf Detexis Dispositif et procede d'emission et/ou de reception de signaux electromagnetiques a antenne adaptative a diagramme etendu
EP1710860A3 (fr) * 2005-01-07 2006-12-27 Agc Automotive Americas R&D, Inc. Antenne de balayage de faisceau à plusieurs éléments d' antennes
US7224319B2 (en) 2005-01-07 2007-05-29 Agc Automotive Americas R&D Inc. Multiple-element beam steering antenna

Also Published As

Publication number Publication date
DE3314387A1 (de) 1984-10-31
EP0124047A3 (fr) 1986-06-11

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Inventor name: STARK, AXEL