发明申请
- 专利标题: MIXER WITH DIFFERENTIAL DC OFFSET CANCELLATION FUNCTION
- 专利标题(中): 具有差分直流偏移消除功能的混频器
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申请号: US12640173申请日: 2009-12-17
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公开(公告)号: US20110037507A1公开(公告)日: 2011-02-17
- 发明人: Hyeon Seok HWANG , Yoo Sam Na , Byeong Hak Jo
- 申请人: Hyeon Seok HWANG , Yoo Sam Na , Byeong Hak Jo
- 申请人地址: KR Suwon
- 专利权人: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- 当前专利权人: SAMSUNG ELECTRO-MECHANICS CO., LTD.
- 当前专利权人地址: KR Suwon
- 优先权: KR10-2009-0074270 20090812
- 主分类号: H03L5/00
- IPC分类号: H03L5/00
摘要:
A mixer with a differential DC offset cancellation function includes: a load unit including a first load unit and a second load unit; a mixing unit biased by current transferred from the load unit to mix inputs signal and oscillation signals; a first output voltage detection unit detecting an output voltage of the first output terminal; a second output voltage detection unit detecting an output voltage of the second output terminal; a first injection/extraction circuit unit injecting current into the first load unit or extracting current from the first load unit according to the size of a first detection voltage; a second injection/extraction circuit unit injecting current into the second load unit or extracting current from the second load unit according to the size of a second detection voltage; and a current regulation unit regulating an overall current flowing across the first and second injection/extraction circuit units.