发明申请
US20100225375A1 REFERENCE SIGNAL GENERATOR CIRCUIT PROVIDED WITH TWO 90-DEGREE PHASE SHIFTERS AND TWO MIXER CIRCUITS
有权
参考信号发生器电路提供两个90度相位变换器和两个混频器电路
- 专利标题： REFERENCE SIGNAL GENERATOR CIRCUIT PROVIDED WITH TWO 90-DEGREE PHASE SHIFTERS AND TWO MIXER CIRCUITS
- 专利标题（中）： 参考信号发生器电路提供两个90度相位变换器和两个混频器电路
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申请号： US12704803申请日： 2010-02-12
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公开(公告)号： US20100225375A1公开(公告)日： 2010-09-09
- 发明人: Masayuki IKEBE , Eiichi Sano , Masato Koutani
- 申请人： Masayuki IKEBE , Eiichi Sano , Masato Koutani
- 优先权： JP2009-055045 20090309
- 主分类号： G06G7/14
- IPC分类号： G06G7/14
摘要：
A first mixer circuit mixes a first center frequency signal with a first local oscillation signal to generate a second mixed signal, and mixes the first center frequency signal with a second local oscillation signal to generate a first mixed signal, and a second mixer circuit mixes a second center frequency signal with the first local oscillation signal to generate a fourth mixed signal, and mixes the second center frequency signal with the second local oscillation signal to generate a third mixed signal. An adder and subtracter circuit subtracts the third mixed signal from the second mixed signal to output a signal of subtraction result as a first upper side band signal, and adds the first mixed signal to the fourth mixed signal to output a signal of addition result as a second upper side band signal different in phase from the first upper side band signal by 90 degrees.
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