Amplifier with controllable variable signal gain
US6388525B1 · kind B1 · utility
22Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G1/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A linear amplifier with a variable signal gain controlled by a control signal that is externally generated and based on the magnitude of the incoming signal. A shunt impedance is connected at the input of the amplifier and a feedback impedance is connected between the output and input of the amplifier. The amplifier is an inverting amplifier, thereby making the output signal phase inverse to the input signal phase. Both impedances are variable and are controlled by the control signal. Together, the signal gain of the amplifier and the values of the shunt and feedback impedances determine the overall signal gain of the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.