Problem in FFT result in LTspice

I am trying to build a Collpits Oscillator that has a resonance frequency of 169Mhz. However, the peak I see in the FFT spectrum is at 46-48 Mhz rather than 169Mhz. If someone can tell me why this happens and how can I solve this problem to get the highest peak at 169Mhz.

by s.tahir
July 27, 2020

Simulating oscillators is always tricky. Could you draw your schematic in CircuitLab so we can see your circuit?

by mrobbins
July 27, 2020
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