PLL as modulator og demodulator

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#2079

From: rasmusms
Date: Tue, 28 Mar 2006 05:51

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I would like to use one PLL for both FSK modulator and demodulator
because of price. I probably gonna switch between a tvxco and FSK input
to "sig in" on a 4046. I gonna modulate the FSK on after the Loop
filter. My consern is about the loop filter. When I am using txvco as
center carier frequency I would like a small BW for loop filter (to
stay looked on carrier frequency), but when pll is used as demodulator
the loop filter should inclued the two FSK frequency?. Or am I wrong?
I would like to use the txvco as center carieer because of large
temperatur swing (-30 - 80) degrees celsius.

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From: "rasmusms" <rasmusms@gmail.com>
Newsgroups: sci.electronics.design,sci.electronics.basics,sci.electronics.misc,alt.electronics,aus.electronics
Subject: PLL as modulator og demodulator
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