How to explain such a LC output wave?
时间：04-11
整理：3721RD
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Hi
The attached schematic is a simple LC tank. Vs is a sine-wave(freq=2GHz,peak-to-peak value=0.4v) and Lg=3nH. I probe the signal at Port2.
In the attached simulation results,the yellow curve is Cp=2p(i.e.,the LgCp's resonance frequency is close to input signal's freq. 2G), the red curve is Cp=2.5p(i.e.,the LgCp's resonance frequency is far to input signal's freq. 2G).
Why does the input sigal seem to be modulated?
Or is there any problem in my simulation?
Thanks.
The attached schematic is a simple LC tank. Vs is a sine-wave(freq=2GHz,peak-to-peak value=0.4v) and Lg=3nH. I probe the signal at Port2.
In the attached simulation results,the yellow curve is Cp=2p(i.e.,the LgCp's resonance frequency is close to input signal's freq. 2G), the red curve is Cp=2.5p(i.e.,the LgCp's resonance frequency is far to input signal's freq. 2G).
Why does the input sigal seem to be modulated?
Or is there any problem in my simulation?
Thanks.
Problem is your simulation. Time step is too large. Try 50ps or less.