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Design >> RF Design >> Question on book High-Purity Oscillator
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Message started by neoflash on Dec 25^th, 2006, 11:47pm

Title: Question on book High-Purity Oscillator
Post by neoflash on Dec 25^th, 2006, 11:47pm

On page 7, author derived a equivalent model for linear oscillator.

There, he assumed something during the derivitation, I posted the page and that assupmtion on the picture. Hope you guys also read that book can help.

Also, on page 57, when author is deriving LC-differential pair noise, again, he assumed it when deriving equation (49).

Thanks,
neoflash

Title: Re: Question on book High-Purity Oscillator
Post by neoflash on Dec 25^th, 2006, 11:50pm

for some reason, i can not attach the graph to the message, why?

any, author assumed 2*Q*(dW/Wo) >>1; is this true for real life circuits?

Title: Re: Question on book High-Purity Oscillator
Post by Forum Administrator on Dec 26^th, 2006, 10:15am

The attachment must be one of the following types: jpg jpeg gif png zip pdf tgz gz tar

-Ken

Title: Re: Question on book High-Purity Oscillator
Post by neoflash on Dec 31^st, 2006, 6:44am

neoflash wrote on Dec 25^th, 2006, 11:50pm:

for some reason, i can not attach the graph to the message, why?

any, author assumed 2*Q*(dW/Wo) >>1; is this true for real life circuits?

I found that I have made a mistake in understanding Abidi's point in that book.
Anyway, just ignore this item.
Actually, the correct assumption should be 2*Q*(dW/Wo) <<1;