Switch circuit, filter circuit and test apparatus
US8232808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Sep 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/693
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There is provided a switch circuit for switching whether to output an input signal, including: a transmission path that transmits the input signal from an input end to an output end of the switch circuit; a first semiconductor switch that is provided on the transmission path and switches whether to transmit the input signal; a second semiconductor switch that is opened when the first semiconductor switch is short-circuited, and that is short-circuited when the first semiconductor switch is opened, thereby grounding, to a ground potential, a high-frequency signal leaked to the transmission path between the first semiconductor switch and the output end; and a voltage controller that causes a potential difference on both ends of the second semiconductor switch when the second semiconductor switch is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.