High frequency amplifier
US6731175B1 · kind B1 · utility
22Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Oct 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high frequency amplifier. The amplifier includes two transistors for signal amplification, and input and output matching circuits. There are variable capacitors and resistors in the matching input and output circuits. A received signal strength indicator receives the band-pass filtered intermediate-frequency signal and generates an indication signal corresponding to the amplitude of the received signal. The variable capacitors and resistors are tuned by the indication signal from the received signal strength indicator. Thus, the gain of the high frequency amplifier is automatically controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.