trond
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Sorry for not being clear enough, I guess I was just writing out my thoughts. Jess, you know when a quantizer is modeled in a modulator to investigate the systems stability, it is often replaced by a variable gain and phase uncertainty. So for example, when the input to the quantizer is small the quantizer gain has to be large to have the output magnitude stay constant at +/-1. When the input signal is large, the quan. gain will be small. Now, with the counter things are a bit different. If we assume a 1-bit counter then the output of the counter will be 0 or 1, Thus, the output magnitude is constant just like in the quantizer case. However, the input to the counter is a pulse train with variable frequency. Therefore, I was suggesting a model that will change the reset frequency of the counter so that no matter how high the frequency at the input is, the output will never be able to count to 2, for example. This is the only way I can think of modeling the non-linearity of the counter, but again I don't know what sort of function could do.
In your last post you wrote: "I am not sure I understand your question but I think you are asking how one could model the toggling behavior of the VCO/counter when its input is held constant. " What kind of information would I be able to obtain from such a model where is input is held constant? I guess it would display idle tones and limit cycles in the spectrum.
Regards, Sven
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