GB812547A - Improvements in and relating to radio transmitter systems - Google Patents
Improvements in and relating to radio transmitter systemsInfo
- Publication number
- GB812547A GB812547A GB2501054A GB2501054A GB812547A GB 812547 A GB812547 A GB 812547A GB 2501054 A GB2501054 A GB 2501054A GB 2501054 A GB2501054 A GB 2501054A GB 812547 A GB812547 A GB 812547A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerial
- transmitter
- outputs
- phase
- aug
- 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
- 230000001702 transmitter Effects 0.000 title abstract 6
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000001808 coupling Effects 0.000 abstract 1
- 230000003111 delayed Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
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
Landscapes
- Transmitters (AREA)
Abstract
812,547. R.F. couplings. BRITISH BROADCASTING CORPORATION. Aug. 26, 1955 [Aug. 27, 1954], No. 25010/54. Class 40 (7). In a radio transmitter installation in which power is fed to an aerial system remote from the transmitter the radiation into the service area of delayed signals due to mis-match at the transmitter output and aerial input is substantially prevented. To achieve this object the transmitter drive unit 12 is arranged to feed a phaseadjusting circuit 13 having two outputs feeding output stages 14 and 15 respectively in quadrature. These stages are constructed to have substantially identical impedances and wavereflecting properties and their outputs are of equal power and in phase quadrature. Two transmission lines 20 and 20<SP>1</SP> couple them respectively to two separate aerial sections 21 and 211 designed to be fed by in-phase input signals. The lines 20 and 20<SP>1</SP> differ in length so as to provide the necessary in-phase inputs; the difference being #/4 in the embodiment shown. Waves reflected at the aerial section inputs and again at the transmitter outputs return to the aerial sections in antiphase and when radiated will not be received at or near ground level except at short range.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812547A true GB812547A (en) | 1959-04-29 |
Family
ID=1738834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2501054A Expired GB812547A (en) | 1954-08-27 | Improvements in and relating to radio transmitter systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3119965A (en) * | 1960-08-08 | 1964-01-28 | Electronic Communications | System for splitting ultra-high-frequency power for divided transmission |
-
1954
- 1954-08-27 GB GB2501054A patent/GB812547A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3119965A (en) * | 1960-08-08 | 1964-01-28 | Electronic Communications | System for splitting ultra-high-frequency power for divided transmission |
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