ping Jim Thompson

Apr 20, 2006 2 Replies

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Bo 20 years ago

Jim,

I was perusing your website and happened upon your patent regarding demodulating of FSK. Is this the currently easiest/best way to decode FSK? Or would I be better off doing with SW and microcontroller?

I was thinking that a comparator with hysteresis to minimize noise could be used to 'square up' the input signal and then I could just use a timer on the uC to count transitions over the bit time. The freqs are 1562.5 and

2083.3 with 520.83 bit/sec rate--- giving 3 or 4, respective, transitions per bit time. Is this a good way to do it or is there another easier/better way?

Thanks,

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jeffm_ 20 years ago

JT is an analog designer and doesn't read this group.

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The only reason he would see something here is if it was cross-posted to sci.electronics.design.

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Tim Wescott 20 years ago

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And while you're cross-posting, post to comp.dsp -- you'll get all the do-it-in-software partisans (like me) chipping in.

Tim Wescott Wescott Design Services http://www.wescottdesign.com Posting from Google? See http://cfaj.freeshell.org/google/

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