Switch apparatus, switchable power amplification apparatus, and mobile communication terminal apparatus using the same
US7400863B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | May 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/21175
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switch apparatus of the invention comprises a first input terminal, a second input terminal to which a second input signal having a level lower than a level of the first input signal is supplied, a first switch block for outputting the first input signal supplied from the first input terminal through a plurality of switching elements, a second switch block for outputting the second input signal supplied from the second input terminal through a plurality of switching elements; and a control terminal to which a control signal is supplied wherein the control signal controls the first switch block when outputting the first input signal, and controls the second switch block when outputting the second input signal, wherein the first switch block is configured to have a smaller number of switching elements than that of the second switch block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.