How to produce frequency/phase modulation

Improved apparatus and method for down conversion

Improvements relating to eer transmitters

Injection phase locking device in an fm-transmitter for a...

Linear frequency modulator for fm/cw radio

Linear modulated oscillators

Linear phase modulator

Low noise gilbert multiplier cells and quadrature...

Low-distortion double sideband suppressed carrier monolithic...

Magnetron oscillators

Maximum likelihood detection of mpsk bursts with inserted...

Method and apparatus for converting binary information into...

Method and apparatus for converting binary information into...

Method and apparatus for digital vector qam modulator

Method and apparatus for modulation synthesis

Method and converter for converting rectangular signals to...

Method and device for signal amplitude modulation

Method of coherent modulation and demodulation for hf data...

Method of quadrature-phase amplitude modulation

Microwave tube modulator