Variable-gain amplifier circuit and wireless communication device integrated circuit equipped therewith
US8212615B2 · kind B2 · utility
7Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2010 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | May 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There is disclosed a variable-gain amplifier circuit that operates on a low voltage, exhibits low distortion, provides a wide range of variation, and is suitable for use in a low-power-consumption wireless communication system. The variable-gain amplifier circuit is configured so that a variable-load circuit, which includes three reactance function elements and provides a wide range of impedance variation, is connected to a conductor circuit whose output terminal generates a positive-phase output current proportional to conductance with respect to an input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.