Data transmission methods and apparatus, data processing...

Data transmission with dual psk modulation

Device for the amplitude modulation of an electrical signal

Differential modulator using concurrent pulse addition and...

Digital amplitude modulator

Digital and analog modulator

Digital continuous phase modulation for a dds-driven phase...

Digital modulation circuit

Digital modulation employing single sideband with suppressed...

Digital modulation process, and modulator implementing the...

Digital phase locked loop

Digital phase locked loop bilateral transmission system...

Digital phase modulator using non-linear amplifiers and a...

Digital psk modulator for modem

Digital quadrature amplitude modulator

Digital signal processing apparatus

Digitalized phase locked loop double carrier transmission...

Direct microwave modulation and demodulation device

Direct sequence spread spectrum digital transmission method...