GB474214A - Reflecting arrangements for ultra-short wave signalling systems - Google Patents
Reflecting arrangements for ultra-short wave signalling systemsInfo
- 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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004209A1 (en) * | 1983-04-18 | 1984-10-25 | Hughes Aircraft Co | Antenna structure |
-
1937
- 1937-04-23 GB GB11685/37A patent/GB474214A/en not_active Expired
Cited By (2)
| 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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