Multiple coupled cavity waveguide bandpass filters
US4396896A · kind A · utility
26Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1979 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Jul 10, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The relative positions of the cavities in known single or dual mode multiple coupled cavity waveguide bandpass filters are rotated to achieve new filter structures in which the primary cavity couplings remain intact while the secondary couplings are shifted. The cavity rotation provides design flexibility since the input and output ports can now be taken from the same side of the filter structure. An additional advantage in dual mode filters is that the rotation permits the physical separation of input and output cavities, thereby providing increased isolation and eliminating spurious out-of-band coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.