Receiving device and related method for calibrating DC offset
US8095101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Nov 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/375
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiving device includes a mixer, an AC coupling circuit, a post-stage circuit, and a DC offset calibration circuit. The mixer is utilized for mixing an input signal with a local oscillating (LO) signal from an oscillator to generate a converted signal. The AC coupling circuit is coupled to the mixer and utilized for reducing at least one portion of DC offset of the converted signal to generate a filtered signal. The post-stage circuit is coupled to the AC coupling circuit and utilized for processing the filtered signal to generate an output signal. The DC offset calibration circuit is coupled to the post-stage circuit and utilized for providing at least a compensation current for the post-stage circuit to reduce DC offset of the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.