GB488898A - Arrangements for suppressing mirror frequencies in heterodyne radio receivers - Google Patents
Arrangements for suppressing mirror frequencies in heterodyne radio receiversInfo
- Publication number
- GB488898A GB488898A GB22217/37A GB2221737A GB488898A GB 488898 A GB488898 A GB 488898A GB 22217/37 A GB22217/37 A GB 22217/37A GB 2221737 A GB2221737 A GB 2221737A GB 488898 A GB488898 A GB 488898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- aerial
- arrangements
- tuned
- radio receivers
- 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
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
Abstract
488,898. Impedance networks. LORENZ AKT.-GES., C. Aug. 12, 1937, No. 22217. Convention date, Aug. 12, 1936. [Classes 40 (iii) and 40 (v)] A circuit 6, 7 tuned to reject the image frequency in a superheterodyne receiver consists of a small inductance and a large condenser and is coupled loosely to the aerial 1, the tuning condenser being operated conjointly with the other tuning condensers. The aerial is preferably tapped on to the circuit 6, 7 and the rejector circuit 6, 7 is connected to the tuned circuit 10, 11 by a lead tapped onto both circuits. According to the Specification as open to inspection under Sect. 91 the aerial 1, Fig. 2 (Cancelled), is associated with a tuned circuit 14, 15 to reject the image frequency. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE488898X | 1936-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB488898A true GB488898A (en) | 1938-07-15 |
Family
ID=6543877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22217/37A Expired GB488898A (en) | 1936-08-12 | 1937-08-12 | Arrangements for suppressing mirror frequencies in heterodyne radio receivers |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR825463A (en) |
| GB (1) | GB488898A (en) |
-
1937
- 1937-08-10 FR FR825463D patent/FR825463A/en not_active Expired
- 1937-08-12 GB GB22217/37A patent/GB488898A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR825463A (en) | 1938-03-03 |
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