Amplitude modulation method and apparatus using two phase-modula

Amplitude modulator circuit having multiple power supplies

Amplitude modulator having negative feedback circuit for reducin

Ask modulator with frequency dependent voltage divider

Circuit for simultaneous amplitude modulation of a number of sig

Digital amplitude modulation apparatus

Digital amplitude modulator and method of signal combining

Digital signals, radio transmitter circuits and method

High efficiency low distortion amplification

Modulator having oscillator for generating IF and RF signals by

Operating method and system for the resonant operation of...

Phase modulation compensated amplitude modulator using digitally

Polar modulation using amplitude modulated quadrature signals

Power supply modulator circuit for transmitter

Power supply modulator circuit for transmitter

Power supply modulator circuit for transmitter

Transmission system with suppressed carrier signal amplitude mod

Wide-band microwave modulator arrangements