Voltage tunable bandpass filter
US4835499A · kind A · utility
62Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1988 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Mar 9, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/20336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A voltage tunable bandpass filter consisting of a plurality of parallel resonators electromagnetically coupled and having tuning diodes coupled to a first end. The resonators are DC isolated at a second or RF grounded end of each resonator. A voltage source reverse biases the tuning diodes from the second or less critical end of the resonators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.