221229 ⎘
Automatic frequency control; Automatic scanning over a band of frequencies; Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes Modification of automatic frequency control sensitivity or linearising automatic frequency control operation
System and method for a tunable capacitance circuit
#2Voltage controlled oscillator
#3Method to increase the tuneability of varactors
#4Wireless device with a non-compensated crystal oscillator
#5Analog varactor
#6Frequency tuning circuits and voltage-controlled oscillator including the same
#7VCO center frequency tuning and limiting gain variation
#8VCO gain tuning using voltage measurements and frequency iteration