GB494319A - Radio antenna systems - Google Patents
Radio antenna systemsInfo
- Publication number
- GB494319A GB494319A GB1250/37A GB125037A GB494319A GB 494319 A GB494319 A GB 494319A GB 1250/37 A GB1250/37 A GB 1250/37A GB 125037 A GB125037 A GB 125037A GB 494319 A GB494319 A GB 494319A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- jan
- condenser
- aerial
- antenna systems
- 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
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
- H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
- H03H2/008—Receiver or amplifier input circuits
Landscapes
- Structure Of Receivers (AREA)
- Toys (AREA)
Abstract
494,319. Wireless receiving systems. GENERAL MOTORS CORPORATION. Jan. 15, 1937, No. 1250. Void. Convention date, Jan. 16, 1936. [Class 40 (v)] An inductive element 36, Fig. 3, connected between the aerial 60 and the first tuned circuit of a radio receiver, is varied co-operatively with the tuning condenser 10 to improve the signal strength provided by the aerial over the frequency range of the receiver. The coil 36, Fig. 1, is secured to the end plate of the case of the tuning condenser 10. A cam-like member 44, preferably of copper is mounted on the projecting end of the rotor shaft 24 in inductive relation with the coil and so varies the effective inductance of the coil as the condenser rotates. A cover 50 preferably shields the parts 36, 44.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US494319XA | 1936-01-16 | 1936-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494319A true GB494319A (en) | 1938-10-24 |
Family
ID=21959788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250/37A Expired GB494319A (en) | 1936-01-16 | 1937-01-15 | Radio antenna systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB494319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1214750B (en) * | 1964-03-11 | 1966-04-21 | Telefunken Patent | Input circuit for receiver for high-frequency electrical oscillations |
-
1937
- 1937-01-15 GB GB1250/37A patent/GB494319A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1214750B (en) * | 1964-03-11 | 1966-04-21 | Telefunken Patent | Input circuit for receiver for high-frequency electrical oscillations |
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