Radio frequency switch
US7561853B2 · kind B2 · utility
49Cited by
25References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Jul 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/44
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A switch that selectively changes radio frequency signals includes at least three FETs, which are connected in series. The source electrodes or drain electrodes arranged at an intermediate stage have a width narrower than that of the source electrodes or the drain electrodes arranged at the initial and final stages. It is thus possible to lower the parasitic capacitance to ground at the intermediate stage and to thereby realize the switch having a high handling power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.