Butler Oscillator Design - RF Cafe Forums
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Post subject: Butler Oscillator Design Posted: Wed Aug 16, 2006 3:13 pm
Joined: Thu Aug 10, 2006 7:09 pm
I need to design a 315MHz crystal oscillator. I'll go for a Butler Oscillator with a crystal running at 105MHz then use a tank circuit on the collector to get the 3rd harmonic thus achieving the needed 315MHz. My problem is that I don't know the exact math I have to use to calculate the component values of the oscillator. I know the circuit model and the only thing I found online was general tips on the design. I'd appreciate any advice on how to find out the exact values I need for this circuit.
Post subject: Butler OscillatorPosted: Mon Aug 28, 2006 11:17 pm
Joined: Wed Feb 22, 2006 3:51 pm
See pages 250-279 of Design of Crystal and Other Harmonic Oscillators by Benjamin Parzen with Arthur Ballato.
It was published in 1983 by Wiley-Interscience, and is available by inter-library loan if your library doesn't have it.
His 29 pages on a single oscillator is pretty exhaustive and detailed.
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