| 摘要 |
A mixer comprises: a switching circuit 104, having a first pair of differential signal nodes and a second pair of differential signal nodes, for switching according to a local oscillation signal Lo; an amplifying stage circuit 102, for receiving an input signal and amplifying the input signal Vip/Vin; a load circuit 106, for serving as the loading of the mixer and generating an output signal Von/Vop of the mixer; a common-mode feedback circuit 108, for receiving the output signal and generating a feedback signal Vfb according to the output signal; a first current source M3, for receiving the feedback signal and generating a first current according to the feedback signal; and a second current source M4, for receiving the feedback signal and generating a second current according to the feedback signal. |
