Variable gain amplifier
US5218318A · kind A · utility
5Cited by
0References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable gain amplifier is provided which includes a pair of common emitter circuits. A resistance between the collectors of a pair of transistors included within the common emitter circuits is reduced by a variable resistance used for DC level correction which is connected in parallel with a variable resistance used for gain adjustment which is connected between the collectors, thereby reducing the degree of correlation between the width of a variable range of gain and a bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.