公开(公告)号：CA1164964A

公开(公告)日：1984-04-03

申请号：CA396336

申请日：1982-02-16

Applicant: MOTOROLA INC

Inventor： GOEDKEN TERRANCE J ,  GEHRKE JAMES K

IPC: H03C3/08 ,  H03C3/22 ,  H03B5/04

Abstract: A wideband, modulation sensitivity compensated, voltage controlled oscillator which automatically and continuously compensates over a wide bandwidth for modulation sensitivity variations resulting from changes in the center frequency of oscillation. The invention continuously varies the coupling between the modulation circuit and the oscillator tank circuit in response to changes in the oscillator tank capacitance. Continuous modulation sensitivity compensation is thereby provided over a wide bandwidth.

公开(公告)号：CA1175509A

公开(公告)日：1984-10-02

申请号：CA398154

申请日：1982-03-11

Applicant: MOTOROLA INC

Inventor： ROSE RICHARD A ,  GEHRKE JAMES K ,  GOEDKEN TERRANCE J ,  VILMUR ROGER

IPC: H03B1/00 ,  H03B5/12 ,  H03L7/187 ,  H03C3/22

Abstract: An exceptionally wideband, synthesizer controlled voltage controlled oscillator is disclosed which is characterized by a plurality of pin diode frequency shift networks which, when actuated shifts the frequency of the oscillator in selectable binary steps within a wide frequency range in the order of 48 MHz. Special means are included to prevent undesireable parasitic oscillation modes when such frequency shift networks are in an inactuated, switched off mode. A multiple varactor tuning circuit is provided for selecting a precise frequency within a relatively narrow frequency band on the order of 6 MHz.