IL44497A - Antenna system for radiating a frequency coded pattern - Google Patents

Antenna system for radiating a frequency coded pattern

Info

Publication number
IL44497A
IL44497A IL44497A IL4449774A IL44497A IL 44497 A IL44497 A IL 44497A IL 44497 A IL44497 A IL 44497A IL 4449774 A IL4449774 A IL 4449774A IL 44497 A IL44497 A IL 44497A
Authority
IL
Israel
Prior art keywords
antenna
wave energy
ports
energy signals
specified
Prior art date
Application number
IL44497A
Other versions
IL44497A0 (en
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 IL44497A0 publication Critical patent/IL44497A0/en
Publication of IL44497A publication Critical patent/IL44497A/en

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

Claims (1)

1. radiated energy within said region of space varies with at least one of the components of angular direction from said antenna system comprising an antenna unit capable of radiating a plurality of beams in different directions said region of space from a common and having plurality of wave energy input ports such that each of said ports corresponds to one of said beams characterized in that means are provided for simultaneously supplying a plurality of wave energy signals during said time one to each of said ports of said antenna each of said energy signals having a measured with respect to a selected reference which varies during said time period between a predetermined pair of values that is unique with respect to the pair associated with any other said wave energy An antenna system as specified in claim 1 characterized in that said means for supplying wave energy signals comprises means for individually controlling the phase of wave energy signals supplied to each of the ports of said antenna unit such that each of said wave energy signals has a measured with respect to a selected reference which varies during said time period between a determined pair of values that is unique with respect to the pair associated with any other of said wave energy signals and means for simultaneously supplying wave energy signals during said time period to said antenna ports via said phase control whereby when said wave energy signals are led by said phase control means and supplied to said antenna said antenna radiates said desired radiation An antenna system as specified in claim characterized in that said means for controlling the phase of the supplied wave energy signals comprises a plurality of phase shifters and means for controlling said phase An antenna system as specified in claim characterized in that said means for controlling the phase of the supplied wave energy signals comprises a plurality of mixing devices and means for generating a pluralit of phase control signals for mixing with said wave energy An antenna system as specified in claim 3 or characterized in that the means for supplying wave energy signals to said antenna ports includes means for converting the frequency of said signals at the outputs of said phase control An antenna as specified in claim characterized in that the means for coupling said antenna ports to said elements comprises a matrix of transmission lines and couplers An antenna system as specified in claim characterized in that said array of antenna elements is a linear array of wherein the number of said input ports is equal to the number of said elements and that said means for coupling said ports to said elements comprises a Butler An antenna as specified in claim characterized in that the means for coupling said antenna ports to said elements includes a matrix operating at a quency other than the frequency to be radiated whose inputs are connected to said antenna ports and whose outputs are connected to said elements by a plurality of means for converting the frequency of wave energy insufficientOCRQuality
IL44497A 1973-04-03 1974-03-26 Antenna system for radiating a frequency coded pattern IL44497A (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 (2)

Publication Number Publication Date
IL44497A0 IL44497A0 (en) 1974-06-30
IL44497A true IL44497A (en) 1976-10-31

Family

ID=23363978

Family Applications (1)

Application Number Title Priority Date Filing Date
IL44497A IL44497A (en) 1973-04-03 1974-03-26 Antenna system for radiating a frequency coded pattern

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)

Families Citing this family (13)

* 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
US4270129A (en) * 1979-01-30 1981-05-26 Sperry Corporation Apparatus and method for realizing preselected free space antenna patterns
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

Also Published As

Publication number Publication date
DE2415899A1 (en) 1974-10-31
US3864679A (en) 1975-02-04
AU6570674A (en) 1975-08-21
CS187413B2 (en) 1979-01-31
IT1010887B (en) 1977-01-20
GB1425143A (en) 1976-02-18
DD112005A5 (en) 1975-03-12
FR2224886A1 (en) 1974-10-31
BR7402611D0 (en) 1974-11-05
SE394542B (en) 1977-06-27
IL44497A0 (en) 1974-06-30
NL7404272A (en) 1974-10-07
JPS49131360A (en) 1974-12-17
CA1036709A (en) 1978-08-15

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