Spiral hybrid coupler
US4800345A · kind A · utility
33Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1988 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Feb 9, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/186
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The disclosed coupler is in a spiral form having approximately 11/4 turns and a length of just over 1/4 wavelength of a designed frequency. The coil includes an interdigitated section with two conductor portions for each conductor. In the overlapped turn portion, the inner conductors are narrower than the outer conductor. Further, conductor pads are disposed adjacent the coupler conductors for connection to associated couplers to vary the bandwidth of the coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.