Switch adaptable radio frequency amplifier
US5216378A · kind A · utility
6Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Mar 2, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/408
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency variable gain amplifier (204) has a plurality of outputs. The amplifier (204) includes a transistor amplifier (330) having a plurality of switchable fixed gain states for amplifying an oscillator signal. The amplifier (204) includes a biasing circuit (302, 306, 312, and 316) for selectively biasing the transistor amplifier (330) to produce the plurality of switchable fixed gain states. The biasing circuit (302, 306, 312, and 316) includes switches (310 and 320) for switching between the switchable fixed gain states of the transistor amplifier (330).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.