GB172394A - Improvements in and relating to radio signalling systems - Google Patents
Improvements in and relating to radio signalling systemsInfo
- Publication number
- GB172394A GB172394A GB2540820A GB2540820A GB172394A GB 172394 A GB172394 A GB 172394A GB 2540820 A GB2540820 A GB 2540820A GB 2540820 A GB2540820 A GB 2540820A GB 172394 A GB172394 A GB 172394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- signal
- aerial
- undesired
- undesired signal
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
172,394. Taggart, J. Scott-, and Radio Communication Co., Ltd. Sept. 3,1920. Thermionic amplifiers; atmospherics &c., eliminating.-A method of reverse interaction is utilized to damp out or minimize the effect of undesired signals in an aerial. As shown in Fig 1, all signals in the aerial are repeated in the plate circuit of an amplifier V. A circuit L4, L5 is tuned to the frequency of the undesired signal, which is re-introduced through the coupling L1, L5 into the aerial, in opposition to the original signal. The undesired signal is thereby damped out and is not transferred through the coupling L6 to the detector circuit. In the arrangement shown in Fig. 2, the circuit A is tuned to the undesired signal, and the circuit C to the desired signal. The output circuit B is adjustably coupled to the detector circuit D in such a way that any undesired signal-energy picked up by the circuit C will be opposed and damped out by the corresponding energy flowing in the circuit B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2540820A GB172394A (en) | 1920-09-03 | 1920-09-03 | Improvements in and relating to radio signalling systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2540820A GB172394A (en) | 1920-09-03 | 1920-09-03 | Improvements in and relating to radio signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB172394A true GB172394A (en) | 1921-12-05 |
Family
ID=10227185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2540820A Expired GB172394A (en) | 1920-09-03 | 1920-09-03 | Improvements in and relating to radio signalling systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB172394A (en) |
-
1920
- 1920-09-03 GB GB2540820A patent/GB172394A/en not_active Expired
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