Electronic tuning circuit for AM receiver which is easy to effect tracking adjustment
US4837852A · kind A · utility
15Cited by
12References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 13, 1986 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Jun 13, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J5/0272
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electronic tuning circuit for AM receiver is disclosed which is so designed that tracking errors are minimized by increasing the accuracy of constants for tuning coils, oscillation coils and capacitance elements incorporated in an antenna tuning circuit, a high-frequency amplifier circuit and a local oscillator circuit which constitute the electronic tuning circuit. After the electronic tuning circuit has been mounted in place, tracking adjustment is effected at one point of the receiving frequency band, or alternatively no such adjustment is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.