Digital fm demodulator

Digital fm demodulator with a reduced sampling rate

Digital frequency discriminator, and use of discriminator to...

Digital frequency-phase comparator

Digital phase comparing apparatus

Digital phase comparison apparatus

Digital phase detector

Digital phase locked loop clock recovery scheme

Digital quadrature phase detection circuit

Digital radio frequency receiver

Digital radio frequency receiver

Digital signal processing architecture for multi-band radio...

Digital timing recovery

Digital tone detector using concatenated detection intervals

Digitally controlled bandwidth sampling filter- detector

Diode mixer with bias control and its use

Direct modulation fm demodulator

Distributed resistive mixer

Double quadrature fm receiver

Double-balanced mixer circuit