Request Help - VCO SPICE netlist

[Daku]

Could some SPICE guru please help ? I am looking for a good voltage
controlled oscillator SPICE netlist. I have designed one using a
Colpitts oscillator and varactor, and I can plot the oscillatory
output, but the circuit does not seem to be very sensitive to tuning
voltage. Any hints, suggestions, pointers would be of immense value.
Thanks in advance for your help.

 

[Robert Macy]

On May 7, 7:08 am, Daku <dakup...@gmail.com> wrote:

Could some SPICE guru please help ? I am looking for a good voltage
controlled oscillator SPICE netlist. I have designed one using a
Colpitts oscillator and varactor, and I can plot the oscillatory
output, but the circuit does not seem to be very sensitive to tuning
voltage. Any hints, suggestions, pointers would be of immense value.
Thanks in advance for your help.

try LTspice and user group.

I found several VCOprojects there