GB645649A - Improvements relating to radio receivers for frequency-modulated waves - Google Patents
Improvements relating to radio receivers for frequency-modulated wavesInfo
- Publication number
- GB645649A GB645649A GB26314/48A GB2631448A GB645649A GB 645649 A GB645649 A GB 645649A GB 26314/48 A GB26314/48 A GB 26314/48A GB 2631448 A GB2631448 A GB 2631448A GB 645649 A GB645649 A GB 645649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- modulated waves
- improvements relating
- radio receivers
- emphasis
- 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
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
645,649. Frequency modulation. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Oct. 8, 1948, No. 26314. Convention date, Oct. 24, 1947. Drawing to Specification. [Class 40 (v)] A receiver for frequency-modulated waves transmitted with pre-emphasis of higher audio frequencies has the last stage of the lowfrequency amplifier provided with frequency dependent negative feed-back to reduce the over-emphasis of the higher frequencies. The feed-back may be produced by a condenser coupling between the anode and control grid of the output valve.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR645649X | 1947-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB645649A true GB645649A (en) | 1950-11-08 |
Family
ID=9000872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26314/48A Expired GB645649A (en) | 1947-10-24 | 1948-10-08 | Improvements relating to radio receivers for frequency-modulated waves |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE485362A (en) |
FR (1) | FR955602A (en) |
GB (1) | GB645649A (en) |
-
0
- FR FR955602D patent/FR955602A/fr not_active Expired
- BE BE485362D patent/BE485362A/xx unknown
-
1948
- 1948-10-08 GB GB26314/48A patent/GB645649A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE485362A (en) | |
FR955602A (en) | 1950-01-18 |
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