VARIABLE FREQUENCY SYNTHESIZER, METHOD FOR SYNTHESIS OF SIGNAL FREQUENCY USING SYNTHESIZER AND RADIO TELEPHONE Russian patent published in 2000 - IPC

FIELD: frequency synthesis. SUBSTANCE: device has multiple accumulating adders with fixation of state of differentiating circuit, and frequency divider. Respective method involves generation of multiple integrated signals, carry signals, differentiation of carry signals, combination of differentiated signals and carry signals in order to produce variable factor signal, which is sent to frequency divider. Radio telephone has receiver for reception of RF signals, transmitter for transmission of RF signals, unit for generation of local oscillator signal of receiver and transmission signal of transmitter, device for generation of synchronization signal, oscillator with variable frequency for generation of output signal, frequency divider, phase comparator, network of accumulating adders, integrators, delay gates, differentiation circuits. EFFECT: decreased level of parasitic signals. 7 cl, 11 dwg