Variable frequency synthesizer comprising a sigma-delta...

Variable frequency synthesizer with reduced phase noise

Variable frequency system having linear combination of charge pu

Variable frequency U. H. F. local oscillator for a television re

Variable high frequency crystal oscillator

Variable high frequency oscillator

Variable increment phase locked loop circuit

Variable inductor, and oscillator and communication system...

Variable inductor, oscillator including the variable...

Variable lock window for a phase locked loop

Variable lock-in circuit for phase-locked loops

Variable loop gain oscillator system

Variable low frequency sinusoidal oscillator using simulated ind

Variable on-and off-time relaxation oscillator

Variable oscillation frequency resonance circuit and voltage...

Variable output coupled resonator

Variable pulse width phase detector

Variable rate modulator

Variable sinusoidal oscillator

Variable speed phase locked loop