Direct digital synthesis in a QAM demodulator

Direct function receivers and transmitters for multichannel comm

Direct microwave demodulator of PSK signals with automatic gain

Discrimination circuit for isolating disturbance signals which a

Discritized phase constellation continuous phase modulation...

Doppler learning phase lock loop for burst demodulator

Doubled balanced differential amplifier circuit with low power c

DPSK demodulator which may be used in an interrogator of a remot

DPSK exclusive-OR demodulator

DQPSK demodulator capable of improving a symbol error rate witho

Dual automatic gain control in a QAM demodulator

Dual bit error rate estimation in a QAM demodulator

Dual channel pulse width detector having delay and D.C. offset m

Dual diode high conversion efficiency signal mixer

Dual frequency demodulation apparatus for frequency shift keyed

Dual mode FM quadrature detector

Dual polarization demodulation with cross polarization cancellat

Dual quadrature frequency converter