发明申请
US20130107925A1 DOWN CONVERTER WITH OFFSET CANCELLATION AND METHODS FOR USE THEREWITH
审中-公开
下变频器与偏移取消及其使用方法
- 专利标题: DOWN CONVERTER WITH OFFSET CANCELLATION AND METHODS FOR USE THEREWITH
- 专利标题(中): 下变频器与偏移取消及其使用方法
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申请号: US13329299申请日: 2011-12-18
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公开(公告)号: US20130107925A1公开(公告)日: 2013-05-02
- 发明人: Stephen Au , Dandan Li , Arya Reza Behzad
- 申请人: Stephen Au , Dandan Li , Arya Reza Behzad
- 申请人地址: US CA Irvine
- 专利权人: BROADCOM CORPORATION
- 当前专利权人: BROADCOM CORPORATION
- 当前专利权人地址: US CA Irvine
- 主分类号: H04B17/00
- IPC分类号: H04B17/00
摘要:
A down conversion module includes a mixer operable to down convert an amplified receive signal from a low noise amplifier, based on a local oscillation, to produce a mixer output signal. A mixer load section is operable to produce a down converted signal from mixer output at an output of the mixer load section. A direct current (DC) offset cancellation module is operable to measure a DC offset at the output of the mixer load section, to generate cancellation currents and to combine the cancellation currents with the mixer output signal to provide DC offset cancellation.