GB1236766A - Improvements in or relating to automatic tracking radio equipments - Google Patents

Improvements in or relating to automatic tracking radio equipments

Info

Publication number
GB1236766A
GB1236766A GB3422268A GB3422268A GB1236766A GB 1236766 A GB1236766 A GB 1236766A GB 3422268 A GB3422268 A GB 3422268A GB 3422268 A GB3422268 A GB 3422268A GB 1236766 A GB1236766 A GB 1236766A
Authority
GB
United Kingdom
Prior art keywords
waveguide
mode
modes
pair
satellite radiation
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
GB3422268A
Inventor
John Richard Mark
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 Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB3422268A priority Critical patent/GB1236766A/en
Priority to FR6924601A priority patent/FR2014649A1/fr
Priority to DE19691936692 priority patent/DE1936692A1/en
Publication of GB1236766A publication Critical patent/GB1236766A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/146—Systems for determining direction or deviation from predetermined direction by comparing linear polarisation components
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation

Abstract

1,236,766. Mode generators. MARCONI CO. Ltd. 7 May, 1969 [18 July, 1968], No. 34222/68. Heading H1W. [Also in Division H4] In a radio tracking system (e.g. tracking satellites) a waveguide is coupled to the aerial and modes in the waveguide are utilized to afford signals representing tracking errors: according to one aspect of the invention the waveguide is circular and the modes are TM 01 and/or TE<SP>1</SP> 21 and TE 21 , and according to another aspect of the invention the waveguide is rectangular and the modes are TE 11 and TM 11 . The satellite radiation may be circularly or linearly polarized. In one embodiment, Fig. 3, the satellite radiation is linearly polarized, the aerial 2 is a conical horn, waveguide 3 is circular, a transverse slot 6 extracts TM 01 and TE<SP>1</SP> 21 received signal modes, a longitudinal slot extracts the TE 21 mode, receiving port 8 is coupled via an " orthogonal mode diplexer," and a communications transmitter is connected to port 9; this apparatus is connected via filters 14, 15, 16, Fig. 7, to a known static split direction-finder system incorporating phasesensitive detectors 26, 27 which give sense-only E and H plane error signal outputs. A rectangular waveguide system is described, Fig. 4 (not shown). For circularly polarized satellite radiation odd order modes are separated from the fundamental mode by magic-T technique: extensions of the pairs 4, 5, Fig. 5, form, for each pair, a magic-T the other arms of which are 10, 12 for pair 4 and 11, 13 for pair 5. The fundamental mode TE<SP>1</SP> 11 is obtained from arms 10, 11, the TE 21 mode from arm 12, and the TM 01 mode from arm 13. To prevent disturbance of the sum received signal on diplexer output guide 8, the TE<SP>1</SP> 11 signals are reflected back into guide 3 by means not shown. In a modification coupling slots 6, 7 are not displaced by 90 degrees as in Fig. 5 but lie along the same axial line, Fig. 6 (not shown). A parabolic reflector may be added.
GB3422268A 1968-07-18 1968-07-18 Improvements in or relating to automatic tracking radio equipments Expired GB1236766A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3422268A GB1236766A (en) 1968-07-18 1968-07-18 Improvements in or relating to automatic tracking radio equipments
FR6924601A FR2014649A1 (en) 1968-07-18 1969-07-18
DE19691936692 DE1936692A1 (en) 1968-07-18 1969-07-18 Automatic follow-up facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3422268A GB1236766A (en) 1968-07-18 1968-07-18 Improvements in or relating to automatic tracking radio equipments

Publications (1)

Publication Number Publication Date
GB1236766A true GB1236766A (en) 1971-06-23

Family

ID=10362924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3422268A Expired GB1236766A (en) 1968-07-18 1968-07-18 Improvements in or relating to automatic tracking radio equipments

Country Status (3)

Country Link
DE (1) DE1936692A1 (en)
FR (1) FR2014649A1 (en)
GB (1) GB1236766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2807588C1 (en) * 2022-12-13 2023-11-16 Акционерное общество Центральное конструкторское бюро аппаратостроения Wave exciters h11 and e01

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420756A (en) * 1981-01-19 1983-12-13 Trw Inc. Multi-mode tracking antenna feed system
DE3216708A1 (en) * 1982-05-05 1984-02-09 ANT Nachrichtentechnik GmbH, 7150 Backnang METHOD FOR OBTAINING ANTENNA SIGNAL SIGNALS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2807588C1 (en) * 2022-12-13 2023-11-16 Акционерное общество Центральное конструкторское бюро аппаратостроения Wave exciters h11 and e01

Also Published As

Publication number Publication date
DE1936692A1 (en) 1970-01-29
FR2014649A1 (en) 1970-04-17

Similar Documents

Publication Publication Date Title
US4308541A (en) Antenna feed system for receiving circular polarization and transmitting linear polarization
US4420756A (en) Multi-mode tracking antenna feed system
KR910015132A (en) Polarization transducer device for contact between linearly polarized satellite and single or dual circularly polarized earth station antenna
US3274604A (en) Multi-mode simultaneous lobing antenna
GB946978A (en) Improvements in or relating to radar systems
US3772701A (en) Satellite antenna autotrack system permitting error signals to appear at the earth station
US2567197A (en) Duplex switch with sum and difference frequency receivers
IT1160916B (en) Satellite microwave signal tracking system - processes TW21 mode signals to determine angular disposition of plane of polarisation
GB998080A (en) Improvements in or relating to aerial systems
US3916414A (en) Antenna system for primary and secondary radar
US3864683A (en) Arrangement for an automatic resetting system for microwave antennas
GB1236766A (en) Improvements in or relating to automatic tracking radio equipments
US3259899A (en) Nondegenerate multimode tracking system
GB1152812A (en) Doppler Radar
US3790941A (en) Antenna tracking systems
US3165743A (en) Amplitude/phase monopulse antenna system
GB889460A (en) Improvements in or relating to antenna array
US3394375A (en) Automatic tracking system for linearly polarized electromagnetic waves
US3893116A (en) Radar lobing system
GB1171401A (en) Improvements in or relating to Automatic Tracking Radio Equipments
US4849761A (en) Multi-mode feed system for a monopulse antenna
US3311916A (en) Nondegenerate multimode tracking system
US3293647A (en) Doppler antenna array with feed switching
GB1265226A (en)
IT9067404A1 (en) POWER CIRCUIT FOR RADAR ANTENNAS