(DS) transmitter

(Sin X)/X correction circuit for a sampled data system

.pi./4 quadrature phase shift keying modulator

.pi./4 shift QPSK modulator and communication apparatus

12-chip coded spread spectrum modulation for direct conversion r

1X asynchronous data sampling clock for plus minus topology appl

3-mode PCM/DPCM/APCM maximizing dynamic range

4-ary correlator, matched filter, and decoder for coherent, dire

5-volt low level serial transceiver

A-D encoder and D-A decoder system

A/D, D/A Converter for PCM transmission system

Access technique of channel hopping communications system

Acquisition apparatus for DSSS communications

Acquisition method and system of spreading code

Acquisition method for DSSS communications

Acquisition of frequency bursts in PCN

Active signalling transmitter control

Actively mode-locked, single-polarization, picosecond optical fi

Adapter frequency range equalizer for digital radio relay system

Adaptive acquisition of multiple access codes