GB1378114A - Antenna system - Google Patents

Antenna system

Info

Publication number
GB1378114A
GB1378114A GB1126473A GB1126473A GB1378114A GB 1378114 A GB1378114 A GB 1378114A GB 1126473 A GB1126473 A GB 1126473A GB 1126473 A GB1126473 A GB 1126473A GB 1378114 A GB1378114 A GB 1378114A
Authority
GB
United Kingdom
Prior art keywords
axis
reflector
concave
reflectors
plane
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.)
Expired
Application number
GB1126473A
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.)
NEC Corp
Original Assignee
Nippon Electric Co 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of GB1378114A publication Critical patent/GB1378114A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q19/10—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 reflecting surfaces
    • H01Q19/18—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 reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—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 reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/191—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 reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1378114 Aerials NIPPON ELECTRIC CO Ltd 8 March 1973 [8 March 1972] 11264/73 Heading H4A A microwave aerial system comprises an aerial portion I, a feed portion II, and a fixed portion III. The portion I is rotatable relative to the portion II about an axis El (e.g. an elevation axis) and the portions I and II together are rotatable relative to the portion III about an axis Az (e.g. an azimuth axis). The portion I contains a plane reflector B located on the axis El, and the portion II contains a first concave reflector A located on the axis El, a plane reflector B<SP>1</SP> located on the axis Az, and a second concave reflector A<SP>1</SP>. The disposition of the reflectors is such that radiation from a focal point Q of the portion I is directed via the plane reflector B along the axis El to the concave reflector A, then via the concave reflector A<SP>1</SP> to the plane reflector B<SP>1</SP>, and then along the axis Az to a focal point Q<SP>1</SP> of the portion III, and' vice versa. The arrangement of the concave reflectors A, A<SP>1</SP> is such that the mode of transmission of the radiation at the plane reflectors B, B<SP>1</SP> is the same, so minimizing side lobe effects. In one embodiment, the portion I comprises a hyperboloidal sub-reflector 2, Fig. 3, with one focus at the point Q, and a paraboloidal main reflector 3. The portion III comprises communications equipment 5 and an associated feed horn 1, with phase centre at the point Q<SP>1</SP>. The concave reflectors A, A<SP>1</SP> in the portion III are offset from the axis Az, are of paraboloidal form, and are mirror images of each other. In another embodiment, the concave reflectors A, A<SP>1</SP> are parts of ellipsoids of revolution having a common focus F, Fig. 6.
GB1126473A 1972-03-08 1973-03-08 Antenna system Expired GB1378114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47023161A JPS4891950A (en) 1972-03-08 1972-03-08

Publications (1)

Publication Number Publication Date
GB1378114A true GB1378114A (en) 1974-12-18

Family

ID=12102869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1126473A Expired GB1378114A (en) 1972-03-08 1973-03-08 Antenna system

Country Status (7)

Country Link
US (1) US3845483A (en)
JP (1) JPS4891950A (en)
CA (1) CA984505A (en)
DE (1) DE2311439C2 (en)
FR (1) FR2175145B1 (en)
GB (1) GB1378114A (en)
IT (1) IT981187B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631735A1 (en) * 1986-09-18 1988-04-07 Messerschmitt Boelkow Blohm MESSAGE TRANSFER DEVICE FOR SPACE VEHICLES

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345222C3 (en) * 1973-09-07 1981-05-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Reflector antenna
FR2265190B1 (en) * 1974-03-19 1978-01-06 Thomson Csf
JPS52140254A (en) * 1976-05-18 1977-11-22 Mitsubishi Electric Corp Antenna unit
FR2429505A1 (en) * 1978-06-20 1980-01-18 Thomson Csf PERISCOPIC FEEDING SYSTEM FOR TWO-RANGE ANTENNA
JPS5744302A (en) * 1980-08-28 1982-03-12 Mitsubishi Electric Corp Antenna device
DE3144466A1 (en) * 1981-11-09 1983-07-07 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Controllable antenna arrangement
JPS58139503A (en) * 1982-02-15 1983-08-18 Kokusai Denshin Denwa Co Ltd <Kdd> Beam feeding device
JPS5911007A (en) * 1982-07-12 1984-01-20 Nec Corp Antenna device in common use as two-frequency band
US4491848A (en) * 1982-08-30 1985-01-01 At&T Bell Laboratories Substantially frequency-independent aberration correcting antenna arrangement
DE3330284A1 (en) * 1983-08-22 1985-03-21 Siemens AG, 1000 Berlin und 8000 München Satellite-radio ground-station antenna arrangement operating on the Cassegrain principle
JPS6089104A (en) * 1983-09-22 1985-05-20 ブリテイツシユ・エアロスペイス・パブリツク・リミテツド・カンパニー Antenna unit
US4668955A (en) * 1983-11-14 1987-05-26 Ford Aerospace & Communications Corporation Plural reflector antenna with relatively moveable reflectors
US4692771A (en) * 1985-03-28 1987-09-08 Satellite Technology Services, Inc. Antenna dish reflector with integral azimuth track
US4716416A (en) * 1985-03-28 1987-12-29 Satellite Technology Services, Inc. Antenna dish reflector with integral declination adjustment
US5003321A (en) * 1985-09-09 1991-03-26 Sts Enterprises, Inc. Dual frequency feed
FR2589284B1 (en) * 1985-10-28 1988-05-20 Alcatel Espace MULTI-REFLECTOR ANTENNA RADIATING A STEERABLE BEAM WITH A LARGE TRAVEL
FR2592742B1 (en) * 1986-01-09 1988-03-18 Alcatel Espace DEVICE FOR ORIENTING AN ANTENNA FOR PERFORMING A SCANNING ACCORDING TO TWO ORTHOGONAL DIRECTIONS
US5673057A (en) * 1995-11-08 1997-09-30 Trw Inc. Three axis beam waveguide antenna
GB2336341A (en) * 1997-02-14 1999-10-20 Easat Antennas Ltd Method and apparatus for the remote clearance of explosive devices
GB9703077D0 (en) * 1997-02-14 1997-04-02 Easat Antennas Ltd Method and apparatus for the remote clearance of explosive devices
US6061033A (en) * 1997-11-06 2000-05-09 Raytheon Company Magnified beam waveguide antenna system for low gain feeds
US6225961B1 (en) 1999-07-27 2001-05-01 Prc Inc. Beam waveguide antenna with independently steerable antenna beams and method of compensating for planetary aberration in antenna beam tracking of spacecraft
US7129903B2 (en) * 2001-09-27 2006-10-31 The Boeing Company Method and apparatus for mounting a rotating reflector antenna to minimize swept arc
US7042409B2 (en) * 2001-09-27 2006-05-09 The Boeing Company Method and apparatus for mounting a rotating reflector antenna to minimize swept arc
US7030831B2 (en) * 2002-11-14 2006-04-18 Wifi-Plus, Inc. Multi-polarized feeds for dish antennas
US7556389B2 (en) * 2006-03-30 2009-07-07 Raytheon Company Pointable optical system with coude optics having a short on-gimbal path length
RU2449436C1 (en) * 2010-10-04 2012-04-27 Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнева" Deployable large-size double-mirror antenna of spacecraft
EP2996197B1 (en) * 2014-09-10 2021-10-20 MacDonald, Dettwiler and Associates Corporation Wide scan steerable antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1516826A1 (en) * 1966-04-26 1969-08-14 Siemens Ag Directional antenna arrangement for very short electromagnetic waves
JPS5211872B2 (en) * 1971-11-17 1977-04-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631735A1 (en) * 1986-09-18 1988-04-07 Messerschmitt Boelkow Blohm MESSAGE TRANSFER DEVICE FOR SPACE VEHICLES

Also Published As

Publication number Publication date
JPS4891950A (en) 1973-11-29
IT981187B (en) 1974-10-10
DE2311439A1 (en) 1973-10-04
DE2311439C2 (en) 1982-10-14
FR2175145B1 (en) 1982-05-07
US3845483A (en) 1974-10-29
CA984505A (en) 1976-02-24
FR2175145A1 (en) 1973-10-19

Similar Documents

Publication Publication Date Title
GB1378114A (en) Antenna system
GB1370669A (en) Antennae
US2422184A (en) Directional microwave antenna
GB1496032A (en) Antennae
US4559540A (en) Antenna system with plural horn feeds
US3096519A (en) Composite reflector for two independent orthogonally polarized beams
GB1385737A (en) Microwave antennas
CA2256785A1 (en) Antenna for communicating with low earth orbit satellite
FR2429505B1 (en)
US4525719A (en) Dual-band antenna system of a beam waveguide type
US3332083A (en) Cassegrain antenna with offset feed
US3102265A (en) New aerial system radiating several beams
GB1425142A (en) Antenna system for radiating multiple planar beams
US3562753A (en) Casseyrain antenna system with rotatable main reflector for scanning
US4186402A (en) Cassegrainian antenna with beam waveguide feed to reduce spillover
US2726389A (en) Antenna unit
US2169553A (en) Directive radio system
GB1268341A (en) Improvements in parabolic antennas
GB1490891A (en) Antenna with a reflector arrangement
GB1136174A (en) Improvements in antennae
US6243047B1 (en) Single mirror dual axis beam waveguide antenna system
US3747116A (en) Radiating cone antenna
GB1190566A (en) Aerials
US3911440A (en) Antenna feed system
GB1342677A (en) Conical torus antenna

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930307