Patent · US Active

Wide bandwidth class C amplifier with common-mode feedback

US8310308B1 · kind B1 · utility

5Cited by

4References

20Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Brian Paul Ginsburg · Allen, US
Vijay B. Rentala · Plano, US
Srinath Ramaswamy · Sachse, US
Baher Haroun · Allen, US
Eunyoung Seok · Plano, US

Key dates

Filing date	May 31, 2011
Grant date	Nov 13, 2012
Priority date	—
Expiry date	May 31, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2203/45702
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A method for providing common-mode feedback is provided. A common-mode current is applied to a common-gate amplifier, and the common-mode current is sensed. In response to the sensed common-mode current, a control voltage is generated. A first feedback current (which is generated in response to the control voltage) can then be applied to differential ground of the common-gate amplifier if the common-mode current is less than a predetermined threshold. Additionally, a second feedback current (which is generated in response to the control voltage) can be applied to input terminals of the common-gate amplifier if the common-mode current is greater than the predetermined threshold.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.