公开(公告)号：US3636475A

公开(公告)日：1972-01-18

申请号：US3636475D

申请日：1969-10-01

Applicant: RCA CORP

Inventor： STECKLER STEVEN ALAN

IPC: H03C3/14 ,  H03B5/02 ,  H03B5/08 ,  H03B3/04 ,  H03B5/12

CPC classification number: H03B5/02 ,  H03B5/08

Abstract: In a controlled oscillator system, current flowing in one of the reactive elements of a frequency selective network is sampled and a second reactive current having phase and frequency which corresponds to the phase and frequency of sampled reactive current is generated. A path of variable conductance is provided for the second reactive current which is in parallel relationship to the reactive element. As the conductance of the parallel path is varied in response to a control signal, the second shunt reactive current changes, producing a change in the total reactive current in the oscillator system, thereby varying the frequency of oscillation of the system.