yi_demon
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Hi all,
Has anyone ever encounter the problem that huge amount of noise brought by varactor bank control logic? I tried to switch on/off the AMOS varactor bank by changing the S/D node voltage between 0 and Vdd directly. So the control logic is directly connect to varactor S/D node, not switch is used. The logic worsens my phase noise by 5dBc.
Is there any way to solve this problem??
Thanks a lot.
Yi.
Has anyone ever encounter the problem that huge amount of noise brought by varactor bank control logic? I tried to switch on/off the AMOS varactor bank by changing the S/D node voltage between 0 and Vdd directly. So the control logic is directly connect to varactor S/D node, not switch is used. The logic worsens my phase noise by 5dBc.
Is there any way to solve this problem??
Thanks a lot.
Yi.