Reference frequency generation for split-comb frequency synthesizer

摘要: A frequency synthesizing apparatus of the closed-loop design employing a first mixing means to provide continuous constant increment coverage over given output signal range. The is responsive and reference difference both when higher than lower frequency. comparison an input signal, being continuously variable range, error for controlling stabilizing closed loop. comprising plurality predetermined, selectable frequencies provided by phase-locked loop second means. signals Phase third provides control lock either sum or between frequencies.