发明申请
US20160330049A1 METHOD AND APPARATUS FOR DIRECT CONVERSION RECEIVER CORRECTING DIRECT CURRENT OFFSET
有权
用于直接转换接收器校正直接电流偏移的方法和装置
- 专利标题: METHOD AND APPARATUS FOR DIRECT CONVERSION RECEIVER CORRECTING DIRECT CURRENT OFFSET
- 专利标题(中): 用于直接转换接收器校正直接电流偏移的方法和装置
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申请号: US15109376申请日: 2015-01-02
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公开(公告)号: US20160330049A1公开(公告)日: 2016-11-10
- 发明人: Yi-Ju ROH , Ji-Hoon KIM , Ju-Ho SON , Yun-A SHIM , Dong-Hyun LEE , Dong-Yun JUNG , Sung-Tae CHOI , Seung-Pyo HONG
- 申请人: SAMSUNG ELECTRONICS CO., LTD.
- 优先权: KR10-2014-0000777 20140103
- 国际申请: PCT/KR2015/000023 WO 20150102
- 主分类号: H04L25/06
- IPC分类号: H04L25/06
摘要:
The present invention relates to a method and an apparatus for direct current offset calibration of a direct conversion receiver, a Direct Current (DC) offset calibration apparatus of a direct conversion receiver includes a plurality of variable gain amplifiers for amplifying an input signal based on a gain control value, a DC offset monitoring unit for monitoring a DC offset for an output signal of the plurality of variable gain amplifiers, a plurality of variable Digital to Analog Converters (DACs) for controlling a current applied to each of the plurality of variable gain amplifiers according to a current control code, and a DC offset cancellation unit for determining a current control code set which minimizes the DC offset value per preset gain control value, and thus the DC offset can be precisely cancelled without being affected by external factors such as a signal modulation method and heat and performance degradation of the receiver can be prevented.
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