Electronic biasing circuit for constant transconductance
US9083287B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electronic biasing circuit provides a DC bias voltage to a circuit to be biased. The biasing circuit has a first transistor and a second transistor. A gate of the first transistor is connected to a gate of the second transistor and supplies the DC bias voltage. A source of the first transistor is connected to a supply reference voltage. A source of the second transistor is connected to the supply reference voltage via a resistor element. The currents flowing through the first and second transistor are forced to be equal. A third transistor is connected in series with the first transistor and a fourth transistor is connected in series with the second transistor. Currents flowing through the third and fourth transistors are forced to be equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.