GB1425143A - Antenna system for radiating doppler coded pattern using multiple beam antenna - Google Patents

Antenna system for radiating doppler coded pattern using multiple beam antenna

Info

Publication number
GB1425143A
GB1425143A GB650674A GB650674A GB1425143A GB 1425143 A GB1425143 A GB 1425143A GB 650674 A GB650674 A GB 650674A GB 650674 A GB650674 A GB 650674A GB 1425143 A GB1425143 A GB 1425143A
Authority
GB
United Kingdom
Prior art keywords
phase
aerial
time period
during
signals
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
GB650674A
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 Aerospace Inc
Original Assignee
Hazeltine 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 Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB1425143A publication Critical patent/GB1425143A/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
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing 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
    • H01Q3/30—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 varying the relative phase between the radiating elements of an array
    • H01Q3/34—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 varying the relative phase between the radiating elements of an array by electrical means

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)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1425143 Aerials; radio navigation HAZELTINE CORP 13 Feb 1974 [3 April 1973] 6506/74 Headings H4A and H4D An aerial system radiates into a spatial region during a selected time period so that the frequency in said region varies with a component of angular direction from said system. It comprises an aerial unit capable of radiating a plurality of beams in said region of space from a common aperture, said unit having a respective input port corresponding to each beam. It also comprises means for supplying a simultaneously respective input signals to said ports during said time period, each of said signals having a phase, measured with respect to a reference phase, which varies during said time period between a predetermined pair of values that is unique with respect to the pair associated with any other of said signals. In a first embodiment an aerial unit of the kind described in Specification 1,425,142 comprises a parabolic reflector 11, Fig. 1, and feedhorns 10a, 10b, 10c in the vicinity of a particular point on the focal axis of said reflector. Each feedhorn, when energized, sets up a planar beam in space which has a characteristic angle in a plane which is perpendicular to the focal axis. An oscillator 15 supplies a power divider 16, which feeds the input ports 12a, 12b, 12c of the horns 10a, 10b, 10c through respective variable phase shifters 14a, 14b, 14c. As is shown in Fig. 2, the phase shifter 14c is maintained at reference phase, whilst each of the phase shifters 14a, 14b is varied linearly during successive periods of time from reference phase minus a certain value to reference phase plus that value, said values being different for each phase shifter. The phase variations need not be linear, and they may be effected at an intermediate frequency. In a second embodiment, the multiple beams are generated by means of an aerial array which is fed from the output ports of a Butler matrix (Fig. 4, not shown). Each input port, corresponding to a particular beam, is supplied through a respective variable phase shifter, as in the first embodiment.
GB650674A 1973-04-03 1974-02-13 Antenna system for radiating doppler coded pattern using multiple beam antenna Expired GB1425143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US347506A US3864679A (en) 1973-04-03 1973-04-03 Antenna system for radiating doppler coded pattern using multiple beam antenna

Publications (1)

Publication Number Publication Date
GB1425143A true GB1425143A (en) 1976-02-18

Family

ID=23363978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB650674A Expired GB1425143A (en) 1973-04-03 1974-02-13 Antenna system for radiating doppler coded pattern using multiple beam antenna

Country Status (13)

Country Link
US (1) US3864679A (en)
JP (1) JPS49131360A (en)
BR (1) BR7402611D0 (en)
CA (1) CA1036709A (en)
CS (1) CS187413B2 (en)
DD (1) DD112005A5 (en)
DE (1) DE2415899A1 (en)
FR (1) FR2224886A1 (en)
GB (1) GB1425143A (en)
IL (1) IL44497A (en)
IT (1) IT1010887B (en)
NL (1) NL7404272A (en)
SE (1) SE394542B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003324A1 (en) * 1979-01-30 1980-08-14 Sperry Corp METHOD AND ANTENNA FOR OBTAINING PRESELECTED FIELD ANTENNA DIAGRAMS

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914765A (en) * 1974-11-05 1975-10-21 Hazeltine Corp Simplified doppler antenna system
GB1524571A (en) * 1975-03-06 1978-09-13 Standard Telephones Cables Ltd Radio navigation system and scanning beam antenna
US4104636A (en) * 1976-10-04 1978-08-01 Hazeltine Corporation Doppler reference antenna with phased centerline emphasis
JPS54116860A (en) * 1978-03-03 1979-09-11 Nippon Telegr & Teleph Corp <Ntt> Variable power distributor
US4414550A (en) * 1981-08-04 1983-11-08 The Bendix Corporation Low profile circular array antenna and microstrip elements therefor
AU658410B2 (en) * 1991-05-02 1995-04-13 Commonwealth Of Australia, The Frequency dependent beamforming
US6944140B1 (en) * 2000-06-21 2005-09-13 Northrop Grumman Corporation Beam hopping self addressed packet switched communication system with multiple beam array antenna
US7915929B2 (en) * 2007-01-17 2011-03-29 International Business Machines Corporation High-speed leaf clock frequency-divider/splitter
US20080172643A1 (en) * 2007-01-17 2008-07-17 International Business Machines Corporation High-Speed Leaf Clock Frequency-Divider/Splitter
DE102008011350A1 (en) * 2008-02-27 2009-09-03 Loeffler Technology Gmbh Apparatus and method for real-time detection of electromagnetic THz radiation
US8558734B1 (en) * 2009-07-22 2013-10-15 Gregory Hubert Piesinger Three dimensional radar antenna method and apparatus
US20110032143A1 (en) * 2009-08-05 2011-02-10 Yulan Sun Fixed User Terminal for Inclined Orbit Satellite Operation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465337A (en) * 1966-12-27 1969-09-02 Isokazu Tanaka Beam scanning device of sonic or electric wave or the like
US3460145A (en) * 1968-03-14 1969-08-05 Gen Electric Electronic scanning system for wave energy beam forming and steering with receptor arrays

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003324A1 (en) * 1979-01-30 1980-08-14 Sperry Corp METHOD AND ANTENNA FOR OBTAINING PRESELECTED FIELD ANTENNA DIAGRAMS

Also Published As

Publication number Publication date
DE2415899A1 (en) 1974-10-31
IT1010887B (en) 1977-01-20
SE394542B (en) 1977-06-27
DD112005A5 (en) 1975-03-12
AU6570674A (en) 1975-08-21
NL7404272A (en) 1974-10-07
CA1036709A (en) 1978-08-15
FR2224886A1 (en) 1974-10-31
IL44497A (en) 1976-10-31
JPS49131360A (en) 1974-12-17
CS187413B2 (en) 1979-01-31
BR7402611D0 (en) 1974-11-05
US3864679A (en) 1975-02-04
IL44497A0 (en) 1974-06-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee