GB1196191A - Dual Antenna System for Transponder Beacon Devices - Google Patents

Dual Antenna System for Transponder Beacon Devices

Info

Publication number
GB1196191A
GB1196191A GB25156/68A GB2515668A GB1196191A GB 1196191 A GB1196191 A GB 1196191A GB 25156/68 A GB25156/68 A GB 25156/68A GB 2515668 A GB2515668 A GB 2515668A GB 1196191 A GB1196191 A GB 1196191A
Authority
GB
United Kingdom
Prior art keywords
transponder
aerial
signal
decoder
comparator
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
GB25156/68A
Inventor
Charles Eugene Quigley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1196191A publication Critical patent/GB1196191A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Radio Relay Systems (AREA)

Abstract

1,196,191. Transponders. C. E. QUIGLEY. 27 May, 1968 [26 May, 1967], No. 25156/68. Heading H4L. A transponder, particularly for use on aircraft, is provided with two aerial systems which are selectively connected to the transponder transmitter so that the coded reply signal is radiated by the aerial receiving the strongest interrogation signal. In one arrangement, Fig. 1, top aerial 10 and bottom aerial 12 are connected to conventional transponders 14, 16 respectively, the outputs of the video amplifiers 20, 32 of the receivers 18, 30 being supplied to a comparator 42. Usually the bottom aerial 12 receives the stronger interrogation signal, the comparator 42 has no effect, and the signal from the corresponding decoder 34 is supplied via a pulse generator 54 to trigger the encoder 36 to initiate a reply signal via aerial 12. Pulse generator 54 also supplies a signal to stop the decoder 22 in the top transponder. If the top aerial 10 should receive the stronger signal, the comparator 42 supplies an output to open a gate 44 to allow the output of the corresponding decoder 22 to energize a pulse generator 46 which supplies a signal to trigger the encoder 24. The output of the pulse generator also suppresses the decoder 34 and via inverter 28 inhibits gate 50 to prevent the transponder 16 from transmitting. In a modification the transponder 16 is normally operative and the transponder 14 suppressed, the comparator 42 being dispensed with. Should the signal received by transponder 16 fall below predetermined level the transponder 14 becomes operative and the transponder 16 is suppressed. In further arrangements, a common encoder and decoder is used for the two transponders, switching may take place at the aerials, or a common transmitter may be switched to the selected aerial.
GB25156/68A 1967-05-26 1968-05-27 Dual Antenna System for Transponder Beacon Devices Expired GB1196191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US643023A US3375516A (en) 1967-05-26 1967-05-26 Dual antenna system for transponder beacon devices

Publications (1)

Publication Number Publication Date
GB1196191A true GB1196191A (en) 1970-06-24

Family

ID=24579034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25156/68A Expired GB1196191A (en) 1967-05-26 1968-05-27 Dual Antenna System for Transponder Beacon Devices

Country Status (2)

Country Link
US (1) US3375516A (en)
GB (1) GB1196191A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077864B1 (en) * 1970-02-19 1973-08-10 Thomson Csf
US6476757B1 (en) * 1972-10-24 2002-11-05 The United States Of America As Represented By The Secretary Of The Navy Secure I/P
DE2743370C2 (en) * 1977-09-27 1983-01-20 Siemens AG, 1000 Berlin und 8000 München Secondary radar interrogation-response system with a diversity transponder
DE2921855C1 (en) * 1979-05-30 1989-11-23 Siemens Ag Secondary radar transponder
DE3232436C2 (en) * 1982-09-01 1985-11-28 Brown, Boveri & Cie Ag, 6800 Mannheim Method and device for the optimal operation of transmitting and receiving antennas
US5097484A (en) * 1988-10-12 1992-03-17 Sumitomo Electric Industries, Ltd. Diversity transmission and reception method and equipment
WO1992006454A1 (en) * 1990-10-05 1992-04-16 Diablo Research Corporation Method and apparatus for price display
DE4213879A1 (en) * 1992-04-28 1993-11-04 Bosch Gmbh Robert COMMUNICATION SYSTEM FOR DATA TRANSFER FROM A MOVING VEHICLE TO A FIXED BEAK
DE4213881A1 (en) * 1992-04-28 1993-11-04 Bosch Gmbh Robert BIDIRECTIONAL DATA TRANSMISSION SYSTEM BETWEEN A BEAK AND A VEHICLE
DE4213882A1 (en) * 1992-04-28 1993-11-04 Bosch Gmbh Robert DEVICE OF A VEHICLE FOR DATA TRANSFER TO A FIXED BAKE AND COMMUNICATION SYSTEM FORMED WITH IT
US6313783B1 (en) * 1999-03-24 2001-11-06 Honeywell International, Inc. Transponder having directional antennas
FR2936383B1 (en) * 2008-09-23 2010-11-12 Thales Sa METHOD FOR IDENTIFYING GROUND OR SEA EQUIPMENT
US8254833B2 (en) * 2009-05-11 2012-08-28 Zih Corp. Near field coupling devices and associated systems and methods
US8878652B2 (en) 2009-11-13 2014-11-04 Zih Corp. Encoding module, associated encoding element, connector, printer-encoder and access control system
US9030348B2 (en) 2012-07-10 2015-05-12 Honeywell International Inc. Systems and methods for providing diversity-distance-measuring equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035169A (en) * 1956-10-03 1962-05-15 Gen Electric Co Ltd Radio relay system with automatic channel selection based upon signal strength
US3095538A (en) * 1960-10-28 1963-06-25 Silberstein Richard Satellite relay station using antenna diversity selection

Also Published As

Publication number Publication date
US3375516A (en) 1968-03-26

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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