Patent · US Active

Low-noise DC offset calibration circuit and related receiver stage

US7956680B2 · kind B2 · utility

1Cited by
6References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 27, 2010
Grant dateJun 7, 2011
Priority date—
Expiry dateApr 27, 2030

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04B1/30
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A DC offset calibration circuit has a first resistor, a first switch, a second resistor, and a second switch. The first resistor is coupled to a first supply voltage. The first switch is coupled to the first resistor, to a first input of an amplifier, and to a first input resistor. A second end of the first input resistor is not coupled to the first supply voltage. The second resistor is coupled to a second supply voltage. The second switch is coupled to the second resistor, to a second input of the amplifier, and to a first end of a second input resistor. A second end of the second input resistor is not coupled to the second supply voltage.

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