GB505400A - High frequency radio repeater - Google Patents
High frequency radio repeaterInfo
- 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
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.
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)
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 |
-
1937
- 1937-06-15 US US148292A patent/US2134278A/en not_active Expired - Lifetime
-
1938
- 1938-05-06 GB GB13615/38A patent/GB505400A/en not_active Expired
- 1938-06-11 FR FR839203D patent/FR839203A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2134278A (en) | 1938-10-25 |
FR839203A (en) | 1939-03-29 |
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