Voltage tunable half wavelength microstrip filter
US4757287A · kind A · utility
7Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Oct 20, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/20381
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A voltage tumble filter has several parallel coupled half wavelength lines. Each open end of a line is coupled to ground through a corresponding varactor. Voltage may be distributed to the varactors through a thin wire attached a quarter wavelength from each varactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.