Electronic automatic frequency tuning system

Fast switching phase lock loop system

FMCW VCO closed loop linearizer

Frequency control circuit for swept frequency oscillator

Gain maintenance apparatus for use with a high gain amplifier in

Generation of wideband linear frequency modulation signals

High frequency lock detecting circuit

Injection locked RF oscillator with control hoop

Integrated ramp, sweep fractional frequency synthesizer on...

Linear chirp generation using VCO tuning with polynomial predist

Linear digital frequency sweep synthesizer

Locked oscillator with damped oscillatory feedback

Long phase-locked carrier recovery loop

Loss-of-phase-lock indicator circuit

Marker sweep linearization system and method

Method and apparatus for assisting a phase lock loop in obtainin

Method and apparatus for switching on an ultrasound...

Method for seeking and setting a resonant frequency and...

Method of and apparatus for driving an ultrasonic transducer inc

Multifrequency microwave source