GB505400A - High frequency radio repeater - Google Patents

High frequency radio repeater

Info

Publication number
GB505400A
GB505400A GB13615/38A GB1361538A GB505400A GB 505400 A GB505400 A GB 505400A GB 13615/38 A GB13615/38 A GB 13615/38A GB 1361538 A GB1361538 A GB 1361538A GB 505400 A GB505400 A GB 505400A
Authority
GB
United Kingdom
Prior art keywords
aerials
loop
receiving
amplifier
aerial
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
GB13615/38A
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 GB505400A publication Critical patent/GB505400A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
    • H01P5/22—Hybrid ring junctions
    • H01P5/225—180° reversed phase hybrid rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
    • H01P5/22—Hybrid ring junctions
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H03H7/487—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source particularly adapted as coupling circuit between transmitters and antennas

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

505,400. Wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. May 6, 1938, No. 13615. Convention date, June 15, 1937. [Class 40 (v)] Relates to repeaters in which interaction between the receiving and retransmitting aerials is prevented by the employment of loop circuits of the kind described in Specification 491,359. In one embodiment, Fig. 4, the output of an amplifier 208 is connected to a. transmitting aerial 201 and its input to the nodal point 225, 227 on a loop circuit made up of the radiation path C between the aerial 201 and a receiving aerial 202 and a line joining the latter with the output of the amplifier 208. In order that the point 225, 227 may be a voltage node for the amplifier output traversing the loop, the electrical length of the. branches on either side thereof may be adjusted by the loop conductors 229, 230, and the adjustable attenuators 408, 204 andreflected energy produced by the attenuator 408 may be partially absorbed by resistances 231. One or both of the aerials 201, 202 may be directional. In another embodiment, , Fig. 5, the two branches of the loop each contain a radiation. path E, F, respectively, two receiving aerials 302, 303 being provided and a transmitting aerial 301, the latter being connected to the output of an amplifier 309 whose input is connected to the nodal point 305, 307 in the line joining the two receiving aerials 302, 303. The receiving aerials may form a directive array or one of them may be efficient to receive radiation from the transmitting aerial 301 only.
GB13615/38A 1937-06-15 1938-05-06 High frequency radio repeater Expired GB505400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US148292A US2134278A (en) 1937-06-15 1937-06-15 High frequency radio repeater

Publications (1)

Publication Number Publication Date
GB505400A true GB505400A (en) 1939-05-10

Family

ID=22525128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13615/38A Expired GB505400A (en) 1937-06-15 1938-05-06 High frequency radio repeater

Country Status (3)

Country Link
US (1) US2134278A (en)
FR (1) FR839203A (en)
GB (1) GB505400A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR948355A (en) * 1942-12-31 1949-07-29 Western Electric Co Coupling device usable in wave transmission systems
US2633492A (en) * 1948-12-30 1953-03-31 Bell Telephone Labor Inc Guided wave frequency range, frequency selective and equalizing structure
GB803349A (en) * 1955-11-17 1958-10-22 Gen Electric Co Ltd Improvements in or relating to electric amplifier arrangements

Also Published As

Publication number Publication date
US2134278A (en) 1938-10-25
FR839203A (en) 1939-03-29

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