Tuning circuit for AM receiver
US4742569A · kind A · utility
3Cited by
3References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 6, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Aug 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J3/185
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a tuning circuit for AM receiver, tuning coils, oscillation coils and capacitance elements of an antenna tuning circuit, a radio frequency amplifier circuit, and a local oscillator circuit are accommodated in discrete shield casings for high frequency coils; and the discrete shield casings are disposed in a row and united with each other in the form of blocks, thereby eliminating the necessity to effect tracking adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.