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EP0021193A1 - Système d'antennes combiné - Google Patents

Système d'antennes combiné Download PDF

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Publication number
EP0021193A1
EP0021193A1 EP80103160A EP80103160A EP0021193A1 EP 0021193 A1 EP0021193 A1 EP 0021193A1 EP 80103160 A EP80103160 A EP 80103160A EP 80103160 A EP80103160 A EP 80103160A EP 0021193 A1 EP0021193 A1 EP 0021193A1
Authority
EP
European Patent Office
Prior art keywords
reflector
micro
strip
antenna system
antenna
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
EP80103160A
Other languages
German (de)
English (en)
Other versions
EP0021193B1 (fr
Inventor
Francesco Alia
Stefano Barbati
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.)
Contraves Italiana SpA
Original Assignee
Contraves Italiana SpA
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 Contraves Italiana SpA filed Critical Contraves Italiana SpA
Publication of EP0021193A1 publication Critical patent/EP0021193A1/fr
Application granted granted Critical
Publication of EP0021193B1 publication Critical patent/EP0021193B1/fr
Expired 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
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support

Definitions

  • the invention relates to an integrated antenna system according to the preamble of claim 1.
  • Integrated radar antenna systems are well known per se. They consist of emitters and reflector screens which simultaneously carry a number of dipoles or slotted steel bars. These systems have the advantage of saving weight and space compared to the systems formed from individual, independent antennas, suffer however from the disadvantage that the energy emanating from the radiator is partially shadowed by the dipoles attached to the reflector. This shading can under certain circumstances enlarge the side lobes or reduce or distort the main lobe, depending on the design and arrangement of the dipoles or slotted steel bars So-called "blind spots" on the reflector, which at least hinder the perfect reflection of the primary radiation. In addition, the polarization of the dipoles or slit steel can only be changed with a relatively high degree of technical effort. However, the aforementioned advantages are in turn reduced.
  • Micro-strip antennas are also known and are specially designed and dimensioned electrically conductive surfaces which are arranged parallel to larger, conductive, grounded surfaces and are held by layers of dielectric material lying between the two surfaces In this way, antennas created can work with a wide variety of frequencies and with variable polarization. In addition, their structure can be built very lightly and robustly, and they require much less manufacturing effort to install and maintain than conventional antennas with comparable performance.
  • the invention is based on the object of providing an integrated antenna system in which the advantages of the micro strip antennas are combined with those of conventional antennas in such a way that the aforementioned disadvantages are avoided and an integrated antenna arises, the area of application thereof, primarily in mobile use , is significantly increased, namely by reducing the weight, simplifying maintenance, reducing the susceptibility to interference, interchangeability of the micro strip beam surfaces, as a result of which a wide range of frequencies and various polarizations can be used, and by reducing the costs.
  • an integrated antenna system of the type mentioned characterized by the features listed in claim No. 1, has been created.
  • Advantageous design variants result from the subclaims.
  • (1) shows a radiator, in the focal point of a double-curved reflector (2) with unequal height and width dimensions ), which fastens one group to the left of the vertical center line (ML) and the other group, reversed to the first, to the right of the aforementioned center line.
  • This inverted arrangement is intended to obtain a symmetrical radiation pattern.
  • the shape of the individual micro-strip beam surface (3) is reminiscent of the letter 'H', the two vertical strips, each with different dimensions, being assigned to a specific frequency.
  • the central bar of the 'H' is used for the feed, which is from the rear of the reflector.
  • the reflector is drilled through at a location that is favorable for attaching the micro-strip beam surface, after which a stop ring (7) is attached to the reflector (2) by means of rivets (9).
  • the stop ring (7) is milled in at one point (10) in order to later accommodate a centering cam.
  • a support ring (6) with a centering cam (6a) 'corresponding to the point (10) is inserted and secured with a ring nut ( 8) attached.
  • the mother carries two Pin (8a), which allow fixing by hand.
  • Inside the support ring (6) there is a recess (11) with a hole into which a high-frequency socket (5) is inserted.
  • a HF socket of the type 'N' that with screws not shown in the drawing is attached.
  • the surface of the support ring (6) pointing to the inside of the reflector is adapted to the double curvature of the reflector. Only the inner conductor of the HF socket (5) protrudes through the hole through the surface.
  • the dielectric layer (3) supporting the micro-strip beam surface (3) 4) is drilled exactly around the feed point of the micro-strip beam surface and positioned and glued to the support ring (6) so that the inner conductor of the HF socket (5) passes through this hole and is soldered to the micro-strip beam surface (3)
  • the soldered micro-strip beam surface can either be provided with a protective coating or, if the mechanical rigidity of the dielectric layer (4) is not sufficient, a further dielectric layer can be glued on from the outside.
  • Figure 3 shows a view of the front of the bracket on the back of the reflector.
  • the enlarged partial view of the section through the reflector according to FIG. 2 shows in FIG. 4 how a micro-strip beam surface (3) with the layer (4) made of dielectric material is exactly parallel to the surface of the reflector at a certain distance (d) (2).
  • the dielectric layer (4) is made extremely thin, so that the phase shift of the emitted by the radiator (1) and reflected by the micro-strip beam surface (3) signals to those reflected by the reflector (2) itself remains negligible. If the factor k is set at 1, 2, 3 or n, the phase shift is k ⁇ 360 °; thus the signals reflected by the two surfaces (2) and (3) again run in the same phase and there are no changes in the radiation diagram.
  • the micro-strip radiation surfaces (3) can be fed individually or in any grouping.
  • the radiation diagram shown in FIG. 5 can be generated.
  • micro-strip beam surfaces (3) described above are detachably attached to the reflector (2). They can be easily attached to existing antenna reflectors, whose curvatures allow them to adapt precisely due to their flexibility, which means that radar devices can be expanded with additional antenna systems for special purposes.

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP80103160A 1979-06-14 1980-06-09 Système d'antennes combiné Expired EP0021193B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2356779 1979-06-14
IT23567/79A IT1166889B (it) 1979-06-14 1979-06-14 Disposizione d'antenne integrate per apparecchiature radar che permette la contemporanea generazione di due o piu' diagrammi d'irradiazione uno diverso dall'altro

Publications (2)

Publication Number Publication Date
EP0021193A1 true EP0021193A1 (fr) 1981-01-07
EP0021193B1 EP0021193B1 (fr) 1985-03-27

Family

ID=11208193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103160A Expired EP0021193B1 (fr) 1979-06-14 1980-06-09 Système d'antennes combiné

Country Status (9)

Country Link
US (1) US4328500A (fr)
EP (1) EP0021193B1 (fr)
JP (1) JPS5673903A (fr)
BR (1) BR8003731A (fr)
DE (1) DE3070377D1 (fr)
EG (1) EG13860A (fr)
ES (1) ES492452A0 (fr)
IN (1) IN152705B (fr)
IT (1) IT1166889B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237110A1 (fr) * 1986-03-05 1987-09-16 THORN EMI Electronics Limited Système d'antenne radiogoniométrique
EP0477799A1 (fr) * 1990-09-26 1992-04-01 Alliant Techsystems Inc. Antenne-détecteur pour fusées de proximité pour des projectiles à sous-munition formés par l'explosion

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130605A (ja) * 1982-01-29 1983-08-04 Toshiba Corp マイクロストリツプアンテナ
JP2840323B2 (ja) * 1989-09-28 1998-12-24 キヤノン株式会社 カラー画像記録装置
EP0883905A1 (fr) * 1996-02-27 1998-12-16 Thomson Consumer Electronics, Inc. Systeme d'antenne commutee orthogonale
JP6089941B2 (ja) * 2013-05-08 2017-03-08 株式会社デンソー レーダ装置
JP6556273B2 (ja) * 2018-01-19 2019-08-07 株式会社フジクラ アンテナ

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445850A (en) * 1965-11-08 1969-05-20 Canoga Electronics Corp Dual frequency antenna employing parabolic reflector
US3482248A (en) * 1967-07-31 1969-12-02 Us Army Multifrequency common aperture manifold antenna
DE1766002B1 (de) * 1967-03-22 1971-03-04 Hollandse Signaalapparaten Bv Integriertes radarantennensystem
DE1941268B2 (de) * 1969-08-13 1972-04-13 Siemens AG, 1000 Berlin u. 8000 München Radarantennenanordnung mit primaerradarantenne und zwei sekundaerantennen sowie nebenkeulen-abfrage- bzw -antwortunterdrueckung
DE2540763A1 (de) * 1974-09-13 1976-04-01 Thomson Csf Strahleranordnung fuer die gemeinsame antenne eines primaer/sekundaer- radars mit einem kontrollkanal
EP0013240A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Antenne commune pour radar primaire et radar secondaire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095230A (en) * 1977-06-06 1978-06-13 General Dynamics Corporation High accuracy broadband antenna system
US4195301A (en) * 1977-08-01 1980-03-25 Motorola, Inc. Disc antenna feed for parabolic reflector
US4142190A (en) * 1977-09-29 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Microstrip feed with reduced aperture blockage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445850A (en) * 1965-11-08 1969-05-20 Canoga Electronics Corp Dual frequency antenna employing parabolic reflector
DE1766002B1 (de) * 1967-03-22 1971-03-04 Hollandse Signaalapparaten Bv Integriertes radarantennensystem
US3482248A (en) * 1967-07-31 1969-12-02 Us Army Multifrequency common aperture manifold antenna
DE1941268B2 (de) * 1969-08-13 1972-04-13 Siemens AG, 1000 Berlin u. 8000 München Radarantennenanordnung mit primaerradarantenne und zwei sekundaerantennen sowie nebenkeulen-abfrage- bzw -antwortunterdrueckung
DE2540763A1 (de) * 1974-09-13 1976-04-01 Thomson Csf Strahleranordnung fuer die gemeinsame antenne eines primaer/sekundaer- radars mit einem kontrollkanal
EP0013240A1 (fr) * 1978-12-27 1980-07-09 Thomson-Csf Antenne commune pour radar primaire et radar secondaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237110A1 (fr) * 1986-03-05 1987-09-16 THORN EMI Electronics Limited Système d'antenne radiogoniométrique
EP0477799A1 (fr) * 1990-09-26 1992-04-01 Alliant Techsystems Inc. Antenne-détecteur pour fusées de proximité pour des projectiles à sous-munition formés par l'explosion

Also Published As

Publication number Publication date
JPS634362B2 (fr) 1988-01-28
BR8003731A (pt) 1981-01-13
JPS5673903A (en) 1981-06-19
DE3070377D1 (en) 1985-05-02
US4328500A (en) 1982-05-04
EG13860A (en) 1983-03-31
ES8101819A1 (es) 1980-12-16
IN152705B (fr) 1984-03-17
IT7923567A0 (it) 1979-06-14
IT1166889B (it) 1987-05-06
EP0021193B1 (fr) 1985-03-27
ES492452A0 (es) 1980-12-16

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