发明申请
US20060094395A1 Local oscillator feedthrough cancellation scheme to remove RF and baseband offsets
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本地振荡器馈通消除方案,以消除RF和基带偏移
- 专利标题: Local oscillator feedthrough cancellation scheme to remove RF and baseband offsets
- 专利标题(中): 本地振荡器馈通消除方案,以消除RF和基带偏移
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申请号: US11303235申请日: 2005-12-16
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公开(公告)号: US20060094395A1公开(公告)日: 2006-05-04
- 发明人: C. Lee , Arya Behzad
- 申请人: C. Lee , Arya Behzad
- 主分类号: H04B1/28
- IPC分类号: H04B1/28 ; H04B1/18 ; H04B1/10
摘要:
An scheme to provide local oscillator feedthrough offset cancellation to remove baseband and radio frequency coupled offsets. Two separate offset cancellation currents are injected at a driver which drives a baseband signal into a mixer to mix with a local oscillator signal. One offset cancellation current cancels a baseband local oscillator feedthrough offset, while the other offset cancellation current cancels a radio frequency local oscillator feedthrough offset.
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