EP0559980A1 - Antennendrossel - Google Patents

Antennendrossel Download PDF

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Publication number
EP0559980A1
EP0559980A1 EP92308825A EP92308825A EP0559980A1 EP 0559980 A1 EP0559980 A1 EP 0559980A1 EP 92308825 A EP92308825 A EP 92308825A EP 92308825 A EP92308825 A EP 92308825A EP 0559980 A1 EP0559980 A1 EP 0559980A1
Authority
EP
European Patent Office
Prior art keywords
array
sections
antenna
choke
channel
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Withdrawn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
EP92308825A
Other languages
English (en)
French (fr)
Inventor
Jonathon Bluestone
John Roy Holloway
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.)
BAE Systems Defence Systems Ltd
Original Assignee
Siemens Plessey Electronic Systems Ltd
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 Siemens Plessey Electronic Systems Ltd filed Critical Siemens Plessey Electronic Systems Ltd
Publication of EP0559980A1 publication Critical patent/EP0559980A1/de
Withdrawn legal-status Critical Current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
    • H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array

Definitions

  • the present invention relates to an antenna choke suitable for use in the field of radar antenna arrays.
  • Radar antenna arrays are composed of a number of radiating elements which are connected to each other.
  • a problem with such arrays is that an electric current mutually couples the adjacent radiating elements. It is therefore desirable to reduce this current so that the performance of the array is increased.
  • Antenna array chokes are known, and one such example is discussed in a book entitled "Theory and Analysis of Phased Array Antennas" by M Amitay, V Galindo and C P Wu, and published by Wiley Interscience.
  • a planar array of compound elements The array is shown in Figure 1 herein and includes a plurality of circular waveguides 1, and each circular waveguide has an associated rectangular waveguide 3 which together make up a unit cell.
  • the effect of the rectangular waveguide is to break up the path of the ground plane currents which travel between the circular waveguides, and therefore these rectangular waveguides act mainly as chokes. While the small rectangular waveguides have been found to be effective in choking the ground plane currents, their manufacture has proved to be quite difficult.
  • an antenna choke for an antenna array comprising a plurality of linear array sections containing a plurality of individual radiating elements, each array section having a channel of predetermined depth formed throughout its length in an edge thereof, so that when the array sections are stacked with the channels facing the same direction to form the array, the channels between adjacent array sections act as a choke to reduce an electric current which mutually couples adjacent array sections.
  • the present invention has the advantage of simplicity of construction and therefore is more easily manufactured.
  • the antenna array comprises a plurality of linear array sections 2, 4.
  • Each section is of rectangular cross section and has a plurality of rectangular radiating elements 10 positioned along its length.
  • Each section has a rectangular channel 6 cut into an edge of each element which extends along the entire length of the section. The channel 6 is machined into each section prior to assembly of the antenna array and therefore the manufacture of such arrays is made very much easier than the array discussed in the prior art.
  • the channel 6 has a depth equal to a quarter of the wavelength of the operating frequency of the array. This mount of depth effectively chokes or reduces the ground plane currents which exists between the adjacent sections of the array.
  • the array is made up of a number of linear array sections, such as 2, 4, the array is built by sequentially placing one section on top of another section and placing a conductive type sealant 8 between each section.
  • the sections are secured together by suitable bolts, for example, with the channels all facing in the same direction to give an assembled array.
  • the array therefore inherently has the necessary chokes incorporated in it by virtue of the channels.
  • Figures 4 and 5 show an antenna array in which the radiating elements are of different shape to those shown in Figures 2 and 3.
  • the array is composed of a number of linear array sections 2, 4 similar to those shown in Figures 2 and 3, connected together with sealant 8 between adjacent sections. Each section has a channel 6 cut into it along its length at a depth equal to a quarter of the wavelength of the operating frequency of the array.
  • the radiating elements 10, each comprise a pair of dipoles 12 printed on a substrate 14.
  • the radiating elements 10 extend from the array sections 2, 4 in the same direction as shown in Figures 4 and 5.
  • an antenna array being composed of array sections which have rectangular cross sections
  • cross sections of a different shape may be used.
  • the array sections may be curved throughout their length so that an antenna array of a dish form is produced.
  • any radiating elements combined in the form of a linear array may be used providing that the body of rectangular cross section can be formed.
  • any lattice, rectangular, triangular or random may be used provided it can be formed from linear arrays in either horizontal or vertical form.
EP92308825A 1992-03-11 1992-09-28 Antennendrossel Withdrawn EP0559980A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9205270A GB2265258B (en) 1992-03-11 1992-03-11 Antenna array incorporating a choke
GB9205270 1992-03-11

Publications (1)

Publication Number Publication Date
EP0559980A1 true EP0559980A1 (de) 1993-09-15

Family

ID=10711898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92308825A Withdrawn EP0559980A1 (de) 1992-03-11 1992-09-28 Antennendrossel

Country Status (4)

Country Link
EP (1) EP0559980A1 (de)
JP (1) JPH05291823A (de)
CA (1) CA2079745A1 (de)
GB (1) GB2265258B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627015A1 (de) * 1996-07-04 1998-01-08 Kathrein Werke Kg Antennenarray
WO2004049747A3 (en) * 2002-11-21 2004-12-02 Bandspeed Inc Multiple access wireless communications architecture
US7136655B2 (en) 2002-11-21 2006-11-14 Bandspeed, Inc. Method and apparatus for coverage and throughput enhancement in a wireless communication system
US7512404B2 (en) 2002-11-21 2009-03-31 Bandspeed, Inc. Method and apparatus for sector channelization and polarization for reduced interference in wireless networks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104377450B (zh) * 2013-08-15 2016-12-28 清华大学 波导喇叭阵列及其方法和天线系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557951A (en) * 1945-06-19 1951-06-26 Standard Telephones Cables Ltd Antenna system
EP0186455A2 (de) * 1984-12-20 1986-07-02 The Marconi Company Limited Mehrdipolenantenne
EP0227121A1 (de) * 1985-12-25 1987-07-01 Nec Corporation Hornantenne mit Sperrtopfanordnung für Oberflächenwellen and der Aussenseite
GB2225170A (en) * 1988-11-22 1990-05-23 Marconi Gec Ltd An antenna

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557951A (en) * 1945-06-19 1951-06-26 Standard Telephones Cables Ltd Antenna system
EP0186455A2 (de) * 1984-12-20 1986-07-02 The Marconi Company Limited Mehrdipolenantenne
EP0227121A1 (de) * 1985-12-25 1987-07-01 Nec Corporation Hornantenne mit Sperrtopfanordnung für Oberflächenwellen and der Aussenseite
GB2225170A (en) * 1988-11-22 1990-05-23 Marconi Gec Ltd An antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 044 (E-050)24 March 1981 & JP-A-56 000 716 ( TOKYO KEIKI ) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627015A1 (de) * 1996-07-04 1998-01-08 Kathrein Werke Kg Antennenarray
US6025812A (en) * 1996-07-04 2000-02-15 Kathrein-Werke Kg Antenna array
DE19627015C2 (de) * 1996-07-04 2000-07-13 Kathrein Werke Kg Antennenfeld
WO2004049747A3 (en) * 2002-11-21 2004-12-02 Bandspeed Inc Multiple access wireless communications architecture
US7136655B2 (en) 2002-11-21 2006-11-14 Bandspeed, Inc. Method and apparatus for coverage and throughput enhancement in a wireless communication system
US7248877B2 (en) 2002-11-21 2007-07-24 Bandspeed, Inc. Multiple access wireless communications architecture
US7512404B2 (en) 2002-11-21 2009-03-31 Bandspeed, Inc. Method and apparatus for sector channelization and polarization for reduced interference in wireless networks

Also Published As

Publication number Publication date
JPH05291823A (ja) 1993-11-05
CA2079745A1 (en) 1993-09-12
GB9205270D0 (en) 1992-04-22
GB2265258B (en) 1995-09-27
GB2265258A (en) 1993-09-22

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