公开(公告)号：US20120007686A1

公开(公告)日：2012-01-12

申请号：US13176893

申请日：2011-07-06

Applicant: Stephane RAZAFIMANDIMBY

Inventor： Stephane RAZAFIMANDIMBY

IPC: H03L7/00 ,  H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/124 ,  H03B5/1293

Abstract: A controlled oscillator includes, connected in parallel, a capacitor configured to be tuneable based upon a first signal, an inductor, and an active impedance. The active impedance is formed by a pair of cross-coupled transistors connected so as to produce a negative resistive component at the terminals of the active impedance. Circuitry produces a degeneracy tuneable by a second signal in the cross-coupled pair, such that the cross-coupled pair produces a capacitive component tuneable based upon the second signal at the terminals of the active impedance.

Abstract translation: 受控振荡器包括并联连接的电容器，其基于第一信号，电感器和有源阻抗被配置为可调谐的。 有源阻抗由一对交叉耦合的晶体管形成，以便在有源阻抗的端子处产生负电阻分量。 电路产生通过交叉耦合对中的第二信号可调谐的退化，使得交叉耦合对产生基于有源阻抗的端子处的第二信号可调谐的电容分量。