EP0088948A1 - Antenna comprising at least one dipole - Google Patents

Antenna comprising at least one dipole Download PDF

Info

Publication number
EP0088948A1
EP0088948A1 EP83102047A EP83102047A EP0088948A1 EP 0088948 A1 EP0088948 A1 EP 0088948A1 EP 83102047 A EP83102047 A EP 83102047A EP 83102047 A EP83102047 A EP 83102047A EP 0088948 A1 EP0088948 A1 EP 0088948A1
Authority
EP
European Patent Office
Prior art keywords
dipole
dipoles
feed device
antenna
conductor tracks
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
EP83102047A
Other languages
German (de)
French (fr)
Other versions
EP0088948B1 (en
Inventor
Michael Theobald
Gerhard Dr. Greving
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 Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
Alcatel NV
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, Alcatel NV, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0088948A1 publication Critical patent/EP0088948A1/en
Application granted granted Critical
Publication of EP0088948B1 publication Critical patent/EP0088948B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/10—Collinear arrangements of substantially straight elongated conductive units
    • 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
    • H01Q19/22—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 a secondary device in the form of a single substantially straight conductive element

Definitions

  • the invention is based on an antenna with at least one dipole, in which the dipole and the feed device for the dipole are designed using stripline technology.
  • an antenna is from the article "An Electronically Scanned Beacon Antenna" by A.E. Holley et al in IEEE Transactions on Antennas and Propagation, Volume AP22, No. 1, January 1974, pages 3 to 12 (in particular page 10).
  • Antennas realized in stripline technology are inexpensive to manufacture and reproducible.
  • the known antennas in stripline technology and with dipoles are not to be used as omnidirectional antennas, since the parasitic currents generated for the dipoles on the supply device deform the omnidirectional diagram generated by the dipoles.
  • Known omnidirectional antennas are generally realized in coaxial technology. If several dipoles are arranged one above the other in the vertical direction, then a central supply for the individual dipoles is provided. A relatively large outlay is necessary for the production.
  • the object of the invention is to provide an omnidirectional antenna realized in stripline technology.
  • the new antenna has good circular characteristics ( ⁇ 1dB) and is broadband ( ⁇ 5% at 1 GHz). According to a further development in which several DipoLe are arranged one above the other, good bundling is achieved in the vertical direction. According to another development, the feed device is designed such that it is on the substrate; on which the DipoLe are attached, only little space is required. As a result, the entire antenna can be made so narrow that it can be accommodated in a thin tubular radome for protection against the weather.
  • An antenna is selected for the exemplary embodiment in which a plurality of vertically polarized dipoles are arranged one above the other in the vertical direction.
  • a radiation diagram is bundled in the desired manner.
  • a dielectric substrate 1 which consists of PTFE (PTFE: polytetrafluoroethylene)
  • copper tracks are applied in a known manner (eg photoetching technique). These copper tracks form the DipoLe 2,3 to 2 (n) , 3 (n) of the antenna, the feed device 4,4 ', 7,7', 9 and 12 for the DipoLe and a parasitic compensating radiator 11.
  • the feed device is symmetrical Bandline technology carried out on both sides of the substrate.
  • the copper tracks are not shown to scale in the drawing.
  • a dipole consists, in a manner known per se, of two dipole halves 2, 3, one half 2 of which is arranged on the top side and the other half 3 is arranged on the bottom side of the substrate.
  • the dipoles are suitably shaped in a manner known per se.
  • the conductor tracks for the feed device feed the HF power to the dipoles at the dipole centers.
  • This compensating radiator 11 is also implemented as a conductor track on the substrate. It is possible to provide a conductor track extending in the vertical direction on only one side of the substrate 1 or on both sides of the substrate. The conductor track can still be replaced by several conductor track sections. However, it is important that the DipoLe - viewed in the horizontal direction - are arranged between the conductor tracks of the feed device and the parasitic compensating radiator. In the exemplary embodiment, the length of the parasitic compensating radiator is equal to the maximum extension of the conductor tracks of the feed device in the vertical direction.
  • the new feeding device combines the "paraLLeLe Feeding" solution and the "serial feeding with the same cable lengths” solution. It has surprisingly been found that the space required is greatly reduced as a result.
  • the RF energy is passed on via line 12.
  • the line 12 has three serial branches a, b and c.
  • the branches and the widths of the conductor tracks before and after the branches are each selected so that the proportion of the RF energy is passed on to the dipoles (or to groups of dipoles), which is necessary to obtain the desired distribution of electricity.
  • a conductor 9 leads to a further branch e, from which the two lower dipoles 2 (n) , 3 (n) ; 2 (IV) , 3 (IV) can be fed in parallel via conductor tracks 7, 7 '.
  • From the branches b and c the two middle dipoles 2 (II) , 3 (II) ; 2 (III) , 3 (III) fed directly via conductor tracks 5, 6.
  • the conductor track 12 ends at a last junction d, from which the two upper dipoles 2, 3; 2 (I) , 3 (I) can be fed directly in parallel via conductor tracks 4,4.
  • the geometric lengths of the individual conductor tracks are dimensioned such that the electrical path lengths from the HF source to all dipoles are the same or, if an increase in the radiation pattern is desired in the vertical direction, have a specific relationship to one another.

Abstract

Auf einem Substrat (1) sind in vertikaler Richtung übereinander mehrere Dipole (2, 3 bis 2<(n)>, 3<(n)>) als Streifenleiter aufgebracht. Diese Dipole werden von einer Speiseeinrichtung, die in Streifenleitungstechnik ausgeführte Leiterbahnen (4,4', 5,6, 7,7', 9, 12) aufweist, mit HF-Energie versorgt. Auf der diesen Leiterbahnen gegenüberliegenden Seite des Substrats ist ein parasitärer Ausgleichsstrahler (11) vorgesehen, der den Einfluß der Leiterbahnen auf das Strahlungsdiagramm der Dipole weitgehend kompensiert. Die Leiterbahnen der Speiseeinrichtung sind so angeordnet, daß sich eine Kombination einer Parallelspeisung mit einer Serienspeisung mit gleichen (oder bei Anhebung des Strahlendiagramms entsprechend gewählten) Leitungslängen ergibt.A plurality of dipoles (2, 3 to 2 <(n)>, 3 <(n)>) are applied as strip conductors on a substrate (1) in the vertical direction. These dipoles are supplied with HF energy by a feed device which has strip conductors (4,4 ', 5,6, 7,7', 9, 12). A parasitic compensating radiator (11) is provided on the side of the substrate opposite these conductor tracks, which largely compensates for the influence of the conductor tracks on the radiation diagram of the dipoles. The conductor tracks of the feed device are arranged in such a way that a combination of a parallel feed with a series feed with the same (or if the radiation diagram is raised accordingly) line lengths results.

Description

Die Erfindung geht aus von einer Antenne mit mindestens einem Dipol, bei der der DipoL und die Speiseeinrichtung für den Dipol in Streifenleitungstechnik ausgeführt sind. Eine solche Antenne ist aus dem Aufsatz "An Electronically Scanned Beacon Antenna" von A.E. Holley et aL in IEEE Transactions on Antennas and Propagation, Band AP22, Nr. 1, Januar 1974, Seiten 3 bis 12 (insbesondere Seite 10) bekannt.The invention is based on an antenna with at least one dipole, in which the dipole and the feed device for the dipole are designed using stripline technology. Such an antenna is from the article "An Electronically Scanned Beacon Antenna" by A.E. Holley et al in IEEE Transactions on Antennas and Propagation, Volume AP22, No. 1, January 1974, pages 3 to 12 (in particular page 10).

In Streifenleitungstechnik realisierte Antennen sind preiswert herzustellen und gut reproduzierbar. ALs Rundstrahler sind die bekannten Antennen in Streifenleitungstechnik und mit DipoLen jedoch nicht zu verwenden, da die auf der Speiseeinrichtung für die Dipole erzeugten Parasitärströme das von den Dipolen erzeugte Runddiagramm verformen.Antennas realized in stripline technology are inexpensive to manufacture and reproducible. However, the known antennas in stripline technology and with dipoles are not to be used as omnidirectional antennas, since the parasitic currents generated for the dipoles on the supply device deform the omnidirectional diagram generated by the dipoles.

Bekannte RundstrahLantennen sind im ALLgemeinen in KoaxiaLtechnik realisiert. Sind hierbei mehrere DipoLe in vertikaLer Richtung übereinander angeordnet, dann ist eine zentrale Speisung für die einzelnen DipoLe vorgesehen. Zur Herstellung ist ein relativ großer Aufwand notwendig.Known omnidirectional antennas are generally realized in coaxial technology. If several dipoles are arranged one above the other in the vertical direction, then a central supply for the individual dipoles is provided. A relatively large outlay is necessary for the production.

Aufgabe der Erfindung ist es, eine in Streifenleitungstechnik realisierte Rundstrahlantenne anzugeben.The object of the invention is to provide an omnidirectional antenna realized in stripline technology.

Die Lösung dieser Aufgabe erfolgt mit den im Anspruch 1 angegebenen MitteLn. VorteiLhafte WeiterbiLdungen sind den Unteransprüchen zu entnehmen.This object is achieved with the means specified in claim 1. Advantageous further training can be found in the subclaims.

Die neue Antenne weist eine gute Rundcharakteristik (±1dB) auf und ist breitbandig (± 5% bei 1 GHz). Gemäß einer Weiterbildung, bei der mehrere DipoLe übereinander angeordnet sind, erreicht man in vertikaler Richtung eine gute Bündelung. Gemäß einer anderen Weiterbildung ist die Speiseeinrichtung so ausgestaltet, daß sie auf dem Substrat; auf dem die DipoLe aufgebracht sind, nur wenig PLatz benötigt. Dadurch kann die gesamte Antenne so schmal ausgestaltet werden, daß sie zum Schutz gegen Witterungseinflüße in einem dünnen rohrförmigen Radom untergebracht werden kann.The new antenna has good circular characteristics (± 1dB) and is broadband (± 5% at 1 GHz). According to a further development in which several DipoLe are arranged one above the other, good bundling is achieved in the vertical direction. According to another development, the feed device is designed such that it is on the substrate; on which the DipoLe are attached, only little space is required. As a result, the entire antenna can be made so narrow that it can be accommodated in a thin tubular radome for protection against the weather.

Die Erfindung wird anhand der Zeichnung, die eine Draufsicht auf eine Antenne darstellt, beispielsweise näher erLäutert.The invention is explained in more detail, for example, with reference to the drawing, which shows a plan view of an antenna.

Für das Ausführungsbeispiel wird eine Antenne gewählt, bei der in vertikaler Richtung mehrere vertikal polarisierte DipoLe übereinander angeordnet sind. Mit einer solchen Antenne erhält man bei geeigneter Wahl der komplexen StrombeLegung in Vertikalrichtung ein in gewünschter Weise gebündeltes Strahlungsdiagramm.An antenna is selected for the exemplary embodiment in which a plurality of vertically polarized dipoles are arranged one above the other in the vertical direction. With such an antenna, with a suitable choice of the complex current allocation in the vertical direction, a radiation diagram is bundled in the desired manner.

Auf einem dielektrischen Substrat 1, das aus PTFE (PTFE: Polytetrafluoräthylen) besteht, sind auf bekannte Weise (z.B. Photoätztechnik) Kupferbahnen aufgebracht. Diese Kupferbahnen bilden die DipoLe 2,3 bis 2(n), 3(n) der Antenne, die Speiseeinrichtung 4,4', 7,7', 9 und 12 für die DipoLe und einen parasitären Ausgleichsstrahler 11. Die Speiseeinrichtung ist in symmetrischer Bandleitungstechnik auf beiden Seiten des Substrats ausgeführt. Die Kupferbahnen sind in der Zeichnung nicht maßstabsgerecht dargestellt.On a dielectric substrate 1, which consists of PTFE (PTFE: polytetrafluoroethylene), copper tracks are applied in a known manner (eg photoetching technique). These copper tracks form the DipoLe 2,3 to 2 (n) , 3 (n) of the antenna, the feed device 4,4 ', 7,7', 9 and 12 for the DipoLe and a parasitic compensating radiator 11. The feed device is symmetrical Bandline technology carried out on both sides of the substrate. The copper tracks are not shown to scale in the drawing.

Ein DipoL besteht in an sich bekannter Weise aus zwei Dipolhälften 2,3 von denen die eine HäLfte 2 auf der Oberseite und die andere HäLfte 3 auf der Unterseite des Substrats angeordnet ist. Aus Breitbandigkeitsgründen sind die Dipole in an sich bekannter Weise geeignet geformt.A dipole consists, in a manner known per se, of two dipole halves 2, 3, one half 2 of which is arranged on the top side and the other half 3 is arranged on the bottom side of the substrate. For reasons of broadband, the dipoles are suitably shaped in a manner known per se.

Die Leiterbahnen für die Speiseeinrichtung führen den Dipolen die HF-Leistung jeweils an den DipoLmitten zu.The conductor tracks for the feed device feed the HF power to the dipoles at the dipole centers.

Durch die Parasitärströme auf den Leiterbahnen der Speiseeinrichtung wird das in der Azimutebene an sich kreisförmige StrahLungsdiagramm der DipoLe so verformt, daß es nicht mehr kreisförmig ist. Dieser störende EinfLuß wird bei der neuen Antenne in vorteilhafter Weise dadurch weitgehend kompensiert, daß man einen parasitären Ausgleichsstrahler 11 vorsieht.Due to the parasitic currents on the conductor tracks of the feed device, the radiation diagram of the dipole, which is circular in the azimuth plane, is deformed in such a way that it is no longer circular. This disturbing influence is largely compensated for in the new antenna in an advantageous manner by providing a parasitic compensating radiator 11.

Dieser Ausgleichsstrahler 11 ist ebewfalls als Leiterbahn auf dem Substrat realisiert. Es ist möglich auf nur einer Seite des Substrats 1 oder auch auf beiden Seiten des Substrats eine sich in vertikaler Richtung erstreckende Leiterbahn vorzusehen. Die Leiterbahn kann weiterhin durch mehrere Leiterbahnstücke ersetzt werden. Wichtig ist jedoch, daß die DipoLe -in horizontaler Richtung betrachtet- zwischen den Leiterbahnen der Speiseeinrichtung und dem parasitären Ausgleichsstrahler angeordnet sind. Bei dem Ausführungsbeispiel ist die Länge des parasitären Ausgleichsstrahlers gleich der maximalen Ausdehnung der Leiterbahnen der Speiseeinrichtung in der vertikalen Richtung.This compensating radiator 11 is also implemented as a conductor track on the substrate. It is possible to provide a conductor track extending in the vertical direction on only one side of the substrate 1 or on both sides of the substrate. The conductor track can still be replaced by several conductor track sections. However, it is important that the DipoLe - viewed in the horizontal direction - are arranged between the conductor tracks of the feed device and the parasitic compensating radiator. In the exemplary embodiment, the length of the parasitic compensating radiator is equal to the maximum extension of the conductor tracks of the feed device in the vertical direction.

Nachfolgend wird erläutert, wie die einzelnen DipoLe über die Leiterbahnen der Speiseeinrichtung mit der (nicht dargestellten) HF-Quelle verbunden sind, damit man eine bestimmte StromverteiLung und feste Phasenverhältnisse erhält.The following explains how the individual dipoles are connected to the RF source (not shown) via the conductor tracks of the feed device, so that a specific current distribution and fixed phase relationships are obtained.

Zunächst ein VergLeich mit bekannten Lösungen. In dem Buch "Radar Handbook" von M.I.Skolnik McGraw Hill Verlag New York, 1970 sind auf den Seiten 11-52 und 11-53 einige MögLichkeiten angegeben, wie man die gewünschten Phasenverhältnisse erhält. Es wird zwischen serieller und paralLeLer Speisung unterschieden.First a comparison with known solutions. In the book "R adar Handbook" by MISkolnik McGraw Hill Publishing N ew York, 1970 11-53 Some ways are listed on pages 11-52, and how to get the desired phase relationships. A distinction is made between serial and parallel supply.

Bei einer seriellen Speisung erhält man eine große Bandbreite nur dann, wenn man eine "serielle Speisung mit gleichen Leitungslängen" wählt. Diese Lösung erfordert jedoch einen sehr großen PLatzbedarf. Auch bei einer rein parallelen Speisung ist ein großer PLatzbedarf notwendig.With a serial supply, you only get a large bandwidth if you choose a "serial supply with the same cable length". However, this solution requires a very large amount of space. A large space requirement is also necessary for a purely parallel supply.

Bei der neuen Speiseeinrichtung erfolgt eine Kombination der Lösung "paraLLeLe Speisung" und der Lösung "serielle Speisung mit gleichen LeitungsLängen". Es hat sich in überraschender Weise gezeigt, daß hierdurch der benötigte PLatzbedarf stark reduziert wird. Bei dem Ausführungsbeispiel wird die HF-Energie über die Leitung 12 weitergeleitet. Die Leitung 12 weist drei serielle Abzweigungen a,b und c auf. Die Abzweigungen und die Breiten der Leiterbahnen vor und nach den Abzweigungen (T-Verzweigungen mit λ/4-Transformatoren) sind jeweils so gewählt, daß zu den Dipolen (bzw. zu Gruppen von DipoLen) jeweils der Anteil der HF-Energie weitergeleitet wird, der notwendig ist, damit man die gewünschte StromverteiLung erhält.The new feeding device combines the "paraLLeLe Feeding" solution and the "serial feeding with the same cable lengths" solution. It has surprisingly been found that the space required is greatly reduced as a result. In the exemplary embodiment, the RF energy is passed on via line 12. The line 12 has three serial branches a, b and c. The branches and the widths of the conductor tracks before and after the branches (T-branches with λ / 4 transformers) are each selected so that the proportion of the RF energy is passed on to the dipoles (or to groups of dipoles), which is necessary to obtain the desired distribution of electricity.

Von der Abzweigunge a führt eine Leiterbahn 9 zu einer weiteren Verzweigung e, von der aus die beiden unteren Dipole 2(n), 3(n); 2(IV) , 3(IV) über Leiterbahnen 7,7' parallel gespeist werden. Von den Abzweigungen b und c werden die beiden mittleren DipoLe 2(II) , 3(II); 2(III), 3(III) über Leiterbahnen 5,6 direkt gespeist. Die Leiterbahn 12 endet an einer letzten Abzweigung d, von der aus die beiden oberen Dipole 2,3; 2(I), 3(I) über Leiterbahnen 4,4 direkt parallel gespeist werden.From the branch a, a conductor 9 leads to a further branch e, from which the two lower dipoles 2 (n) , 3 (n) ; 2 (IV) , 3 (IV) can be fed in parallel via conductor tracks 7, 7 '. From the branches b and c the two middle dipoles 2 (II) , 3 (II) ; 2 (III) , 3 (III) fed directly via conductor tracks 5, 6. The conductor track 12 ends at a last junction d, from which the two upper dipoles 2, 3; 2 (I) , 3 (I) can be fed directly in parallel via conductor tracks 4,4.

Die geometrischen Längen der einzelnen Leiterbahnen sind so bemessen, daß die elektrischen Weglängen von der HF-QueLLe zu allen Dipolen gleich sind oder, falls in vertikaler Richtung eine Anhebung des Strahlungsdiagramm erwünscht ist, ein bestimmtes Verhältnis zueinander aufweisen.The geometric lengths of the individual conductor tracks are dimensioned such that the electrical path lengths from the HF source to all dipoles are the same or, if an increase in the radiation pattern is desired in the vertical direction, have a specific relationship to one another.

Claims (4)

1. Antenne mit mindestens einem Dipol (2,3), bei der der DipoL und die Speiseeinrichtung (4,12) für den Dipol in Streifenleitungstechnik ausgeführt sind, dadurch gekennzeichnet, daß zur Erzeugung eines Strahlungsdiagramms, das in der zur Längsrichtung des Dipols senkrechten Ebene zumindest angenähert kreisförmig ist, zusätzlich zu dem Dipol ein parasitärer AusgLeichsstrahler (11) vorgesehen ist, der so bemessen ist, daß er den Einfluß der Speiseeinrichtung auf das StrahLungsdiagramm zumindest weitgehend kompensiert.1. Antenna with at least one dipole (2, 3), in which the dipole and the feed device (4, 12) for the dipole are designed in stripline technology, characterized in that to produce a radiation diagram which is perpendicular to the longitudinal direction of the dipole Level is at least approximately circular, in addition to the dipole, a parasitic compensating radiator (11) is provided, which is dimensioned such that it at least largely compensates for the influence of the feed device on the radiation diagram. 2. Antenne nach Anspruch 1, dadurch gekennzeichnet, daß der parasitäre Ausgleichsstrahler ebenfalls in Streifenleitungstechnik realisiert ist.2. Antenna according to claim 1, characterized in that the parasitic compensating radiator is also realized in stripline technology. 3. Antenne nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mehrere DipoLe (2,3;...; 2(n), 3(n)) ) in Richtung der DipoLachsen übereinander angeordnet sind und daß sich der parasitäre Ausgleichsstrahler zumindest über die Länge eines TeiLs der DipoLe erstreckt.3. Antenna according to claim 1 or 2, characterized in that a plurality of DipoLe (2,3; ...; 2 (n) , 3 (n) )) are arranged one above the other in the direction of the D ipoLachsen and that the parasitic compensating radiator at least extends over the length of a part of the DipoLe. 4. Antenne nach Anspruch 3, dadurch gekennzeichnet, daß die Speiseeinrichtung aus der Kombination einer ParaLLeLspeisung (e,7,7'; d,4,4') und einer Serienspeisung mit bestimmten LeitungsLängen (a,b,c; 12,9,6,5) besteht.4. Antenna according to claim 3, characterized in that the feed device from the combination of a ParaLLeLspeisung (e, 7,7 '; d, 4,4') and a series feed with certain line lengths (a, b, c; 12,9, 6.5).
EP83102047A 1982-03-11 1983-03-03 Antenna comprising at least one dipole Expired EP0088948B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823208789 DE3208789A1 (en) 1982-03-11 1982-03-11 ANTENNA WITH AT LEAST ONE DIPOLE
DE3208789 1982-03-11

Publications (2)

Publication Number Publication Date
EP0088948A1 true EP0088948A1 (en) 1983-09-21
EP0088948B1 EP0088948B1 (en) 1987-09-02

Family

ID=6157930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102047A Expired EP0088948B1 (en) 1982-03-11 1983-03-03 Antenna comprising at least one dipole

Country Status (5)

Country Link
US (1) US4575728A (en)
EP (1) EP0088948B1 (en)
DE (2) DE3208789A1 (en)
GB (1) GB2117184B (en)
IT (1) IT1161112B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567685A1 (en) * 1984-07-13 1986-01-17 Matsushita Electric Works Ltd PLANE ANTENNA FOR MICROWAVE
US5999090A (en) * 1997-02-04 1999-12-07 Mitel Semiconductor Limited Alarm sensor and antenna arrangement

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552937B1 (en) * 1983-10-04 1987-10-16 Dassault Electronique RADIANT DEVICE WITH MICROBAND STRUCTURE WITH INTERFERENCE ELEMENT
US4652829A (en) * 1984-12-28 1987-03-24 Schlumberger Technology Corp. Electromagnetic logging apparatus with button antennas for measuring the dielectric constant of formation surrounding a borehole
US4689572A (en) * 1984-12-28 1987-08-25 Schlumberger Technology Corp. Electromagnetic logging apparatus with slot antennas
US4654668A (en) * 1985-04-03 1987-03-31 The Singer Company Microstrip circuit temperature compensation with stub means
US4704581A (en) * 1985-12-28 1987-11-03 Schlumberger Technology Corp. Electromagnetic logging apparatus using vertical magnetic dipole slot antennas
US4780723A (en) * 1986-02-21 1988-10-25 The Singer Company Microstrip antenna compressed feed
US4758843A (en) * 1986-06-13 1988-07-19 General Electric Company Printed, low sidelobe, monopulse array antenna
GB8613322D0 (en) * 1986-06-02 1986-07-09 British Broadcasting Corp Array antenna & element
US4857852A (en) * 1986-06-20 1989-08-15 Schlumberger Technology Corp. Induction well logging apparatus with transformer coupled phase sensitive detector
US5168234A (en) * 1990-09-07 1992-12-01 Schlumberger Technology Corporation Method and apparatus for measuring azimuthal as well as longitudinal waves in a formation traversed by a borehole
US5673052A (en) * 1995-12-13 1997-09-30 Dorne & Margolin, Inc. Near-field focused antenna
US5943017A (en) * 1995-12-13 1999-08-24 Ail Systems, Inc. Dual near-field focused antenna array
AU731954B2 (en) * 1996-07-03 2001-04-05 Radio Frequency Systems Inc. Log periodic dipole antenna having a microstrip feedline
CA2240114A1 (en) * 1997-07-03 1999-01-03 Thomas P. Higgins Dual polarized cross bow tie dipole antenna having integrated airline feed
RU2498466C1 (en) * 2012-05-11 2013-11-10 Открытое акционерное общество Научно-производственный комплекс "Русская радиоэлектроника" Collinear antenna

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877427A (en) * 1955-10-11 1959-03-10 Sanders Associates Inc Parallel transmission line circuit
US3689929A (en) * 1970-11-23 1972-09-05 Howard B Moody Antenna structure
US3971029A (en) * 1974-01-14 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Window antenna device for use in motor vehicle
GB2019100A (en) * 1978-04-11 1979-10-24 Asahi Glass Co Ltd Antenna system for window glass automobile

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3541559A (en) * 1968-04-10 1970-11-17 Westinghouse Electric Corp Antenna for producing circular polarization over wide angles
US3681769A (en) * 1970-07-30 1972-08-01 Itt Dual polarized printed circuit dipole antenna array
GB1398262A (en) * 1971-08-05 1975-06-18 Emi Ltd Aerials
US3750185A (en) * 1972-01-18 1973-07-31 Westinghouse Electric Corp Dipole antenna array
US3887925A (en) * 1973-07-31 1975-06-03 Itt Linearly polarized phased antenna array
US4097868A (en) * 1976-12-06 1978-06-27 The United States Of America As Represented By The Secretary Of The Army Antenna for combined surveillance and foliage penetration radar
US4514734A (en) * 1980-05-12 1985-04-30 Grumman Aerospace Corporation Array antenna system with low coupling elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877427A (en) * 1955-10-11 1959-03-10 Sanders Associates Inc Parallel transmission line circuit
US3689929A (en) * 1970-11-23 1972-09-05 Howard B Moody Antenna structure
US3971029A (en) * 1974-01-14 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Window antenna device for use in motor vehicle
GB2019100A (en) * 1978-04-11 1979-10-24 Asahi Glass Co Ltd Antenna system for window glass automobile

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, Band AP-22, Nr. 1, Januar 1974, Seiten 3-12, New York, USA *
TELECOMMUNICATIONS AND RADIO ENGINEERING, Nr. 8, August 1965, Seiten 99-104 *
THE RADIO & ELECTRONIC ENGINEER, Band 48, Nr. 11, November 1978, Seiten 549-565, *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567685A1 (en) * 1984-07-13 1986-01-17 Matsushita Electric Works Ltd PLANE ANTENNA FOR MICROWAVE
US5999090A (en) * 1997-02-04 1999-12-07 Mitel Semiconductor Limited Alarm sensor and antenna arrangement

Also Published As

Publication number Publication date
IT8320039A1 (en) 1984-09-11
GB2117184A (en) 1983-10-05
IT1161112B (en) 1987-03-11
GB8305356D0 (en) 1983-03-30
EP0088948B1 (en) 1987-09-02
GB2117184B (en) 1985-07-24
DE3373385D1 (en) 1987-10-08
DE3208789A1 (en) 1983-09-22
IT8320039A0 (en) 1983-03-11
US4575728A (en) 1986-03-11

Similar Documents

Publication Publication Date Title
EP0088948B1 (en) Antenna comprising at least one dipole
DE3149200C2 (en)
DE69908264T2 (en) COMPACT SPIRAL ANTENNA
DE2712608C2 (en) Microwave group antenna in stripline technology
EP0634058B1 (en) Directional antenna, in particular a dipole antenna
DE69839348T2 (en) TWO BAND ANTENNA
DE19911905A1 (en) Phase shifter element for aligning transmission antenna wave pattern
DE3538430A1 (en) LEVEL MICROWAVE ANTENNA
DE2821781A1 (en) HIGH FREQUENCY ANTENNA
DE953623C (en) High profit broadband omnidirectional television antenna
DE3129045A1 (en) Direction-finding antenna system
DE3217437A1 (en) MICROWAVE DIRECTIONAL ANTENNA FROM A DIELECTRIC LINE
DE3524503A1 (en) LEVEL MICROWAVE ANTENNA
DE2824053A1 (en) ANTENNA ARRANGEMENT
DE60310335T2 (en) Broadband antenna
DE19603803C2 (en) Quad antenna, on an insulating material and process for its manufacture
DE3529914C2 (en)
EP1198026A2 (en) Antenna arrangement for mobile phones
DE2120147B2 (en) Antenna with a transmission line
DE3427629C2 (en)
DE4239785A1 (en) Strip conductor group antenna - has flat conductive arrangement with stepped surface area variation which varies antenna band width
AT234771B (en) Transmitter for high-frequency electromagnetic waves for the mutual adaptation of balanced and unbalanced lines
EP3349303A1 (en) Kombinationsantenne
DE895316C (en) Antenna arrangement for generating a double-eight diagram
DE2544399A1 (en) VERTICAL ANTENNA WITH OFF-CENTER FEED

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

Designated state(s): DE FR NL

17P Request for examination filed

Effective date: 19840310

17Q First examination report despatched

Effective date: 19860227

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCATEL N.V.

Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR NL

REF Corresponds to:

Ref document number: 3373385

Country of ref document: DE

Date of ref document: 19871008

ET Fr: translation filed
RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT

Owner name: ALCATEL N.V.

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: NL

Payment date: 19890331

Year of fee payment: 7

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

Ref country code: FR

Payment date: 19891218

Year of fee payment: 8

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

Ref country code: DE

Payment date: 19900519

Year of fee payment: 8

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

Ref country code: NL

Effective date: 19901001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19911129

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

Ref country code: DE

Effective date: 19920101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST