Re: Practical VCO


"redhat" <aezzat1@xxxxxxxxx> wrote:
>how to design a practical vco? is it a trial and error process? i tried
>to design a resonator, calculated its values and simulated it using ADS
>and it worked finw when using ideal components, but, when using vendor
>components like coil from coilcraft and capacitors from murata , the
>output was a signal that has no specific shape,the circuit didn't
>resonate at the specified frequency and even not near it although i
>have recalculated the component values according to Q unloaded of the
>coil.
>
>regards
>
My experience with vco is a lot has to do with the frequency in question,
the higher the frequency the more drift and instability and location of components
effecting the frequency becomes more critical.

Dave






www.community4all.com
www.debsajoker.com

.

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