Gain modulation circuit
US11171612B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2020 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Apr 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A gain modulation circuit includes a load circuit, a differential circuit, a current source, a resistor, a first transistor, and a detector circuit. The load circuit is configured to receive a supply voltage. The differential circuit is coupled to the load circuit. The differential circuit and the load circuit are configured to generate a pair of output voltages according to a pair of input voltages and the supply voltage. The current source is coupled to the differential circuit. The resistor is coupled to the differential circuit and the current source. The first transistor is coupled to the differential circuit. The detector circuit is configured to generate a detection signal according to the pair of input voltages. A turned-on degree of the first transistor is adjusted based on the detection signal, to adjust a linear region of the gain modulation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.