GB557083A - Improvements in and relating to means for reducing noise in radio receivers - Google Patents
Improvements in and relating to means for reducing noise in radio receiversInfo
- Publication number
- GB557083A GB557083A GB5870/42A GB587042A GB557083A GB 557083 A GB557083 A GB 557083A GB 5870/42 A GB5870/42 A GB 5870/42A GB 587042 A GB587042 A GB 587042A GB 557083 A GB557083 A GB 557083A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loop
- ground
- capacity
- relating
- reducing noise
- 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)
- Details Of Aerials (AREA)
- Transmitters (AREA)
Abstract
557,083. Wireless receiving circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 1, 1942, No. 5870. Convention date, March 25, 1941. [Class 40 (v)] A receiver has a loop antenna 1 connected at one end to the input grid of the first amplifier 15 and at the other end to the chassis 11. One or more outside turns 3 connected to the loop 1 at the point connected to the chassis, are coupled through a trimmer condenser 5 to a plate 7 having considerable capacity to ground. By this means, the noise voltage induced in loop 1 due to the capacity between the loop and ground can be exactly neutralized by the noise voltage induced in the outside turns 3 due to the capacity between the plate 7 and ground. A switch 9 for short-circuiting the condenser 5 enables the disectivity of the loop to be reduced in locations where the noise is not troublesome.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US385062A US2289691A (en) | 1941-03-25 | 1941-03-25 | Noise reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB557083A true GB557083A (en) | 1943-11-03 |
Family
ID=23519868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5870/42A Expired GB557083A (en) | 1941-03-25 | 1942-05-01 | Improvements in and relating to means for reducing noise in radio receivers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2289691A (en) |
| GB (1) | GB557083A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2415810A (en) * | 1943-10-22 | 1947-02-18 | Cohen Louis | Radio receiving system |
| US2950479A (en) * | 1955-12-05 | 1960-08-23 | Gen Electric | Loop antenna utilizing conductive cabinet |
| US6861159B2 (en) * | 1992-03-27 | 2005-03-01 | The Louis Berkman Company | Corrosion-resistant coated copper and method for making the same |
-
1941
- 1941-03-25 US US385062A patent/US2289691A/en not_active Expired - Lifetime
-
1942
- 1942-05-01 GB GB5870/42A patent/GB557083A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2289691A (en) | 1942-07-14 |
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