GB474214A - Reflecting arrangements for ultra-short wave signalling systems - Google Patents

Reflecting arrangements for ultra-short wave signalling systems

Info

Publication number
GB474214A
GB474214A GB11685/37A GB1168537A GB474214A GB 474214 A GB474214 A GB 474214A GB 11685/37 A GB11685/37 A GB 11685/37A GB 1168537 A GB1168537 A GB 1168537A GB 474214 A GB474214 A GB 474214A
Authority
GB
United Kingdom
Prior art keywords
aerials
reflecting
ultra
aerial
grid
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
GB11685/37A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB474214A publication Critical patent/GB474214A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

474,214. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. April 23, 1937, No. 11685. Convention date, June 26, 1936. [Class 40 (v)] The two aerials 5, 5<1> of a microwave installation are set at right-angles to each other, with their coaxial feeders 4, 41 in line, and associated with a common reflecting system comprising a spherical surface 2 set at the focus of a parabolic surface 1. Each aerial operates on a different wavelength and is coupled to a short-wave oscillator-detector of the Clavier type comprising a cathode 9, a grid 8, and a reflecting electrode 11. The grid is coupled to the aerial at c1 and c2, and the reflecting electrode to an oscillating circuit L1, Cl, and thence through a change-over switch 12 to a receiver R. Fig. 1 shows two receivers, though the two aerials 5, 5<1> may be used for simultaneous transmission, or for alternate transmission and reception. Fig. 3. shows the mounting of the combined unit, the valves being slidably fitted in the housing 19, 191 for tuning.
GB11685/37A 1936-06-26 1937-04-23 Reflecting arrangements for ultra-short wave signalling systems Expired GB474214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR474214X 1936-06-26

Publications (1)

Publication Number Publication Date
GB474214A true GB474214A (en) 1937-10-27

Family

ID=8902842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11685/37A Expired GB474214A (en) 1936-06-26 1937-04-23 Reflecting arrangements for ultra-short wave signalling systems

Country Status (1)

Country Link
GB (1) GB474214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004209A1 (en) * 1983-04-18 1984-10-25 Hughes Aircraft Co Antenna structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984004209A1 (en) * 1983-04-18 1984-10-25 Hughes Aircraft Co Antenna structure
US4636801A (en) * 1983-04-18 1987-01-13 Hughes Aircraft Company Multiple reflector system with dielectric support webs and foam body

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