发明授权
- 专利标题： DC offset cancellation
- 专利标题（中）： DC偏移消除
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申请号： US09661127申请日： 2000-09-13
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公开(公告)号： US06801581B1公开(公告)日： 2004-10-05
- 发明人: Amir Francos , Ilan Barak , Daniel Yellin
- 申请人： Amir Francos , Ilan Barak , Daniel Yellin
- 主分类号： H04K102
- IPC分类号： H04K102
摘要：
A transmitter has a transmission path with an IQ modulator and a feedback path with an IQ demodulator. DC offset is determined by estimating a DC offset of the IQ demodulator, adaptively estimating a DC offset of the IQ modulator at least partially from the demodulator DC offset, subtracting the estimated demodulator DC offset from the feedback path and subtracting the estimated modulator DC offset from the transmission path.
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