GB1434986A - Antenna system - Google Patents

Antenna system

Info

Publication number
GB1434986A
GB1434986A GB3332173A GB3332173A GB1434986A GB 1434986 A GB1434986 A GB 1434986A GB 3332173 A GB3332173 A GB 3332173A GB 3332173 A GB3332173 A GB 3332173A GB 1434986 A GB1434986 A GB 1434986A
Authority
GB
United Kingdom
Prior art keywords
array
plates
waveguide
radiating elements
plate
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
GB3332173A
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.)
International Standard Electric Corp
Original Assignee
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1434986A publication Critical patent/GB1434986A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08—Systems for determining direction or position line
    • G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
    • G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas
    • 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
    • H01Q19/12—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 wherein the surfaces are concave
    • H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/245—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching in the focal plane of a focussing device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2658—Phased-array fed focussing structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

1434986 Aerials; radio-navigation INTERNATIONAL STANDARD ELECTRIC CORP 12 July 1973 [17 July 1972] 33321/73 Headings H4A and H4D An aerial system comprises a parallel-plate waveguide which has a circular sector aperture, and which is excited by an array of radiating elements disposed along a straight line parallel to said plates. As described, with reference to Fig. 3, plates 2 and 5 are semicircular in shape (n.b., plate 5, being under plate 2, is not seen in the figure), and the array 1 is disposed along the diametrical edge of the waveguide. The elements of the array are independently excitable, and are fed via commutating means to provide a Doppler type beacon. The aperture of the waveguide may be provided with flared extensions 2<SP>1</SP>, 5<SP>1</SP>, Fig. 4(b), upon which a radome may be mounted if required. In another embodiment, flared extensions 2<SP>11</SP>, 5<SP>11</SP>, Fig. 4(c), are provided to produce a down-turned sectoral horn which acts as an offset feed for a reflector 6. Said reflector is substantially semicircular (convex outwards) in azimuthal planes and is concave outwards (parabolic, for example) in radial vertical planes. The radiating elements may be monopoles or slots (Figs. 4(d), (4(e), 4(f), not shown). The spacing between the plates 2, 5 may be less than #/2 with vertically polarized radiation, and be between #/2 and #. with horizontally polarized radiation, where # is the wavelength at the operating frequency. In another embodiment, the radiating elements are fed from a distribution network 12, Fig. 5, through respective variable phase shifters, by means of which the radiated beam may be steered.
GB3332173A 1972-07-17 1973-07-12 Antenna system Expired GB1434986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27245172A 1972-07-17 1972-07-17

Publications (1)

Publication Number Publication Date
GB1434986A true GB1434986A (en) 1976-05-12

Family

ID=23039845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3332173A Expired GB1434986A (en) 1972-07-17 1973-07-12 Antenna system

Country Status (6)

Country Link
US (1) US3775773A (en)
JP (1) JPS4960155A (en)
DE (1) DE2335792A1 (en)
ES (1) ES416978A1 (en)
FR (1) FR2193268A1 (en)
GB (1) GB1434986A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864680A (en) * 1973-04-03 1975-02-04 Hazeltine Corp Array antenna for radiating doppler coded pattern using phase control
US3858218A (en) * 1973-04-03 1974-12-31 Hazeltine Corp Antenna system for radiating doppler coded pattern, using sequential modal excitation
US5565879A (en) * 1980-03-26 1996-10-15 Unisys Corporation High scan rate low sidelobe circular scanning antenna
FR2548836B1 (en) * 1983-07-08 1986-02-21 Thomson Csf QUASI-TORIC COVERED ANTENNA WITH TWO REFLECTORS
FR2577721B1 (en) * 1985-02-19 1987-02-20 Thomson Csf MICROWAVE PRIMARY SOURCE FOR PHASE CONICAL SCANNING ANTENNA
US5714964A (en) * 1995-11-07 1998-02-03 Condor Systems, Inc. Horned interferometer antenna apparatus
US6930647B2 (en) 2001-05-17 2005-08-16 Hitachi Kokusai Electric Inc. Semicircular radial antenna
AUPR709101A0 (en) * 2001-08-17 2001-09-06 Argus Technologies (Australia) Pty Ltd A waveguide antenna
FR2835356B1 (en) * 2002-01-31 2005-09-30 Cit Alcatel RECEPTION ANTENNA FOR MULTIFACEAL COVERAGE
US8648768B2 (en) 2011-01-31 2014-02-11 Ball Aerospace & Technologies Corp. Conical switched beam antenna method and apparatus
US9379437B1 (en) 2011-01-31 2016-06-28 Ball Aerospace & Technologies Corp. Continuous horn circular array antenna system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721263A (en) * 1945-11-13 1955-10-18 Roy C Spencer Curved throat scan horn for the transmission of electromagnetic energy
US2659005A (en) * 1951-03-21 1953-11-10 Ca Nat Research Council Microwave antenna

Also Published As

Publication number Publication date
DE2335792A1 (en) 1974-01-31
AU5816773A (en) 1975-01-23
JPS4960155A (en) 1974-06-11
FR2193268A1 (en) 1974-02-15
US3775773A (en) 1973-11-27
ES416978A1 (en) 1976-03-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee