Zero-bias bypass switching circuit using mismatched 90 degrees hybrid
US6812786B2 · kind B2 · utility
12Cited by
67References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7239
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A zero-bias bypass apparatus for a low noise amplifier includes a bypass circuit, and a switching circuit coupled with a low noise amplifier and with the bypass circuit. The switching circuit includes one or more solid state devices responsive to absence of a control bias for switching an RF input signal from said amplifier to the bypass circuit with a low insertion loss and high isolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.