公开(公告)号：US20100264994A1

公开(公告)日：2010-10-21

申请号：US12743177

申请日：2008-11-07

Applicant: David L. Duperray

Inventor： David L. Duperray

IPC: H03B5/12

CPC classification number: H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/038

Abstract: An LC oscillator is provided that achieves improved phase noise performance. A variable frequency oscillator includes a variable supply source (I), an oscillator tank circuit (T), a variable capacitance circuit (VC1) comprising MOS switches, and an oscillator tank voltage common mode adjustment circuit (R). When the capacitance of the variable capacitance circuit is varied to vary an output frequency of the variable frequency oscillator, the common mode voltage is adjusted to reduce transitions of the MOS switches between an inversion state and a depletion state during excursions of an output signal through one cycle of oscillation.

Abstract translation: 提供了一种可提高相位噪声性能的LC振荡器。 可变频率振荡器包括可变电源（I），振荡器电路（T），包括MOS开关的可变电容电路（VC1）和振荡器电压共模调整电路（R）。 当可变电容电路的电容改变以改变可变频率振荡器的输出频率时，调节共模电压以减少输出信号通过一个的偏移期间在反转状态和耗尽状态之间的MOS开关的转变 振荡周期。

公开(公告)号：US08604889B2

公开(公告)日：2013-12-10

申请号：US12743177

申请日：2008-11-07

Applicant: David L. Duperray

Inventor： David L. Duperray

IPC: H03B1/00

CPC classification number: H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/038

Abstract: An LC oscillator is provided that achieves improved phase noise performance. A variable frequency oscillator includes a variable supply source, an oscillator tank circuit, a variable capacitance circuit comprising MOS switches, and an oscillator tank voltage common mode adjustment circuit. When the capacitance of the variable capacitance circuit is varied to vary an output frequency of the variable frequency oscillator, the common mode voltage is adjusted to reduce transitions of the MOS switches between an inversion state and a depletion state during excursions of an output signal through one cycle of oscillation.

Abstract translation: 提供了一种可提高相位噪声性能的LC振荡器。 可变频率振荡器包括可变电源，振荡器电路，包括MOS开关的可变电容电路和振荡器电压共模调整电路。 当可变电容电路的电容改变以改变可变频率振荡器的输出频率时，调节共模电压以减少输出信号通过一个偏移期间的反相状态和耗尽状态之间的MOS开关的转变 振荡周期。