GB582176A - Improvements in duplex radio-signalling systems - Google Patents

Improvements in duplex radio-signalling systems

Info

Publication number
GB582176A
GB582176A GB507143A GB507143A GB582176A GB 582176 A GB582176 A GB 582176A GB 507143 A GB507143 A GB 507143A GB 507143 A GB507143 A GB 507143A GB 582176 A GB582176 A GB 582176A
Authority
GB
United Kingdom
Prior art keywords
guide
waves
guides
aerial
polarization
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
GB507143A
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.)
HUGH RUSSELL LETHAM LAMONT
General Electric Co PLC
Original Assignee
HUGH RUSSELL LETHAM LAMONT
General Electric Co PLC
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 HUGH RUSSELL LETHAM LAMONT, General Electric Co PLC filed Critical HUGH RUSSELL LETHAM LAMONT
Priority to GB507143A priority Critical patent/GB582176A/en
Publication of GB582176A publication Critical patent/GB582176A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • 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

Landscapes

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

Abstract

582,176. Duplex wireless signalling ; wave guides. GENERAL ELECTRIC CO., Ltd., and LAMONT, H. R. L. March 29, 1943, No. 5071. [Class 40 (v)] In a duplex radio signalling system, the aerial at one or both stations is connected to one end of a wave guide 1 adapted to transmit waves polarized in either of two perpendicular planes A, B ; and the other end of the guide 1 branches into separate guides 2, 3 leading respectively to transmitting and receiving apparatus T, R, the guide 2 being arranged to transmit only waves of one polarization and the guide 3 waves of the other polarization. As shown, the discrimination is effected by diaphragm obstructions 4, 5 with diametral slots 6, 7 mutually perpendicular; but diametral wires or systems of wires may be substituted for the slotted diaphragms. Alternatively, the guide 1 may be of square section, and the guides 2, 3 of rectangular section, the wider sides of one rectangular guide being in planes parallel to the narrower sides of the other. The frequencies used for the two directions of transmission may be different, and the transmitter oscillator at each station used as a local oscillator for a superheterodyne receiver at that station. The aerial may be of the horn type, or the open end of the guide may be associated with a paraboloidal reflector.
GB507143A 1943-03-29 1943-03-29 Improvements in duplex radio-signalling systems Expired GB582176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB507143A GB582176A (en) 1943-03-29 1943-03-29 Improvements in duplex radio-signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB507143A GB582176A (en) 1943-03-29 1943-03-29 Improvements in duplex radio-signalling systems

Publications (1)

Publication Number Publication Date
GB582176A true GB582176A (en) 1946-11-07

Family

ID=9789211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB507143A Expired GB582176A (en) 1943-03-29 1943-03-29 Improvements in duplex radio-signalling systems

Country Status (1)

Country Link
GB (1) GB582176A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782299A (en) * 1952-01-18 1957-02-19 Bendix Aviat Corp Anti-pulling duplexer
EP0073511A2 (en) * 1981-08-31 1983-03-09 Nec Corporation Satellite broadcasting receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782299A (en) * 1952-01-18 1957-02-19 Bendix Aviat Corp Anti-pulling duplexer
EP0073511A2 (en) * 1981-08-31 1983-03-09 Nec Corporation Satellite broadcasting receiver
EP0073511A3 (en) * 1981-08-31 1985-05-22 Nec Corporation Satellite broadcasting receiver

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