Waveguide circulator with I/O port impedance matching produced by ferrite-port gap dimensioning
US4801902A · kind A · utility
6Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Sep 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/39
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Impedance matching between a waveguide circulator and its input/output ports is achieved by properly dimensioning a gap formed between a ferrite circulator element inside the waveguide circulator and at least a portion of the input/output port aperture itself. Typically, the I/O port aperture has at least a portion which is of lesser height dimension than the internal waveguide circulator cavity. Ridge waveguide or ridge-to-rectangular waveguide adaptor blocks, or the like, may emanate from such input/output circulator apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.