| 摘要 |
FIELD: line radio transmitters. SUBSTANCE: signals incorporating amplitude- and phase-modulated components are transmitted over circuits ensuring automatic control of amplitude and phase modulation. Automatic phase-modulation control circuit provides for phase modulation, frequency shift, and introduction of phase pre-distortions for transmitter. Phase pre-distortions and their corrections are effected by using oscillator so that phase correction of power amplifier is actually unlimited. In addition, automatic phase-modulation control circuit is interconnected with power amplifier which provides for correction of any phase distortions brought in by power amplifier. EFFECT: provision for frequency modulation, frequency conversion, and amplitude modulation permitting unlimited phase distortions in power amplifier irrespective of output signal and supply voltage level or temperature. 10 cl, 6 dwge
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