Amplifier, filter using the same, and radio communication device
US7414468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Oct 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45352
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier includes an amplification unit which amplify a first difference between first and second input signals, a second difference between second and third input signals and a third difference between third and first input signals by a differential mode gain, and amplify an average of the first, second and third input signal by a common mode gain, for outputting a first output signal corresponding to a sum of the amplified first difference and the amplified average, a second output signal corresponding to a sum of the amplified second difference and the amplified average, and a third output signal corresponding to a sum of the amplified third difference and amplified average; first, second; and a reduction circuit which reduces the common mode gain less than the differential mode gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.