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Design >> Analog Design >> A GFSK demodulator for low-IF Bluetooth receiver
https://designers-guide.org/forum/YaBB.pl?num=1613036947

Message started by blue111 on Feb 11^th, 2021, 1:49am

Title: A GFSK demodulator for low-IF Bluetooth receiver
Post by blue111 on Feb 11^th, 2021, 1:49am

For A GFSK demodulator for low-IF Bluetooth receiver , how does the shape-keeping circuit in figure 4(c) works ?

Besides, why need the NOR gate before the input to the shape-keeping circuit ?

Why if R3 is changed to 50 ohm, then the whole circuit cannot simulate at all ?