221194 ⎘
Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings; Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
Sub-classes:FREQUENCY SYNTHESIZER AND METHOD THEREOF
#2Communication apparatus and method
#3Method of operating radio receiver implemented in a single CMOS integrated circuit
#4Single chip radio receiver with decoder and controllable baseband filter
#5Single chip radio receiver with decoder and controllable baseband filter
#6Low leakage local oscillator system