GB653314A - Improvements in and relating to antennae - Google Patents
Improvements in and relating to antennaeInfo
- Publication number
- GB653314A GB653314A GB3193446A GB3193446A GB653314A GB 653314 A GB653314 A GB 653314A GB 3193446 A GB3193446 A GB 3193446A GB 3193446 A GB3193446 A GB 3193446A GB 653314 A GB653314 A GB 653314A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transmission line
- antenna
- rotatable
- reflector
- antenna system
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
- H01Q3/20—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
653,314. Antenna system. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Oct. 28, 1946, No. 31934. [Classes 40 (v) and 40 (vii)] A directional antenna system adapted to scan in one plane, comprises a radiating element situated at the focus of a parabolic reflector which is mounted to be rotatable about the element, and the transmission line which is connected to the element passes through an axial opening in the rotatable bearing of the reflector. Fig. 1 shows a suitable arrangement of the element and transmission line. A vertical half-wave antenna 10 is supplied with very high-frequency energy from transmission line 13, 14, via a matching transformer consisting of a quarter-wave transmission line section 15, 16. To reduce currents to ground through the outer conductors 16, 14, a tubular conductive member 17 surrounds, and is coextensive with, outer conductor 16. The transmission line section formed by conductors 16 and 17 is short-circuited at its end remote from the antenna. An insulating plug 20 and a shield 21 may be provided by a material such as polystyrene. Fig. 2 shows the rotatable antenna system. The antenna unit 10, corresponding to that described in Fig. 1, is fixed, and the parabolic reflector 25 and back reflector 26 are rotatable about antenna 10 by means of gear 35, the radiating element thereby having an unobstructed view of the reflector 25. The transmission line 12 passes through an axial hole in bearing 29.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE482546D BE482546A (en) | 1946-10-28 | ||
| GB3193446A GB653314A (en) | 1946-10-28 | 1946-10-28 | Improvements in and relating to antennae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3193446A GB653314A (en) | 1946-10-28 | 1946-10-28 | Improvements in and relating to antennae |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB653314A true GB653314A (en) | 1951-05-16 |
Family
ID=10330570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3193446A Expired GB653314A (en) | 1946-10-28 | 1946-10-28 | Improvements in and relating to antennae |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE482546A (en) |
| GB (1) | GB653314A (en) |
-
0
- BE BE482546D patent/BE482546A/xx unknown
-
1946
- 1946-10-28 GB GB3193446A patent/GB653314A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE482546A (en) |
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