Quasioptical band rejection filter
US4185257A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1978 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Jun 1, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2138
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One of ports of a 3dB hybrid for dividing and combining electromagnetic waves is used as an input port, and first and second resonators are electromagnetically coupled respectively with two ports to which the electromagnetic waves incident from the input port are outputted after being divided. The first and second resonators respectively comprise pluralities of opposed coupling disks sequentially arranged in the direction of travel of the electromagnetic waves and first and second reflectors disposed opposite the coupling disks farthest from the hybrid. The numbers of coupling disks of the first and second resonators are selected to differ by one. The remaining port of the hybrid is used as an output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.