Evanescent mode microwave bandpass filter with a rotatable crank shape coupling antenna
US4746883A · kind A · utility
14Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1986 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Jun 13, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The microwave bandpass filter in the form of a cutoff frequency waveguide (1) or evanescent mode guide, being besides tunable within a range of frequencies and having at least one terminal (21, 22) of the coaxial type, has terminals each equipped with a crank-shaped coupling antenna (15) operable to be rotated about its longitudinal axis for filter tuning purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.