公开(公告)号：US20130309983A1

公开(公告)日：2013-11-21

申请号：US13997592

申请日：2011-12-19

申请人： Ori Ashckenazi ,  Rotem Banin ,  Ofir Degani

发明人： Ori Ashckenazi ,  Rotem Banin ,  Ofir Degani

IPC分类号： H03B5/12

CPC分类号： H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1296

摘要： Embodiments provide a voltage controlled oscillator (VCO) having reduced single-ended capacitance. In one embodiment, the VCO may include a transformer, a capacitor bank, and a gain stage. The transformer may include a primary inductor and a secondary inductor, and the secondary inductor may be inductively coupled to the primary inductor. The capacitor bank may be coupled to the secondary inductor and may provide a majority of a total capacitance of the VCO. The gain stage may be coupled to the primary inductor and configured to receive a supply signal and to drive a differential current in the primary inductor, thereby inducing an output signal across the secondary inductor having a frequency equal to a resonant frequency of the VCO.

公开(公告)号：US09093950B2

公开(公告)日：2015-07-28

申请号：US13997592

申请日：2011-12-19

申请人： Ori Ashckenazi ,  Rotem Banin ,  Ofir Degani

发明人： Ori Ashckenazi ,  Rotem Banin ,  Ofir Degani

IPC分类号： H04B1/38 ,  H03B5/12

CPC分类号： H03B5/1212 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1296

摘要： Embodiments provide a voltage controlled oscillator (VCO) having reduced single-ended capacitance. In one embodiment, the VCO may include a transformer, a capacitor bank, and a gain stage. The transformer may include a primary inductor and a secondary inductor, and the secondary inductor may be inductively coupled to the primary inductor. The capacitor bank may be coupled to the secondary inductor and may provide a majority of a total capacitance of the VCO. The gain stage may be coupled to the primary inductor and configured to receive a supply signal and to drive a differential current in the primary inductor, thereby inducing an output signal across the secondary inductor having a frequency equal to a resonant frequency of the VCO.

摘要翻译： 实施例提供具有减小的单端电容的压控振荡器（VCO）。 在一个实施例中，VCO可以包括变压器，电容器组和增益级。 变压器可以包括初级电感器和次级电感器，并且次级电感器可以感应耦合到初级电感器。 电容器组可以耦合到次级电感器并且可以提供VCO的总电容的大部分。 增益级可以耦合到主电感器并且被配置为接收电源信号并驱动初级电感器中的差分电流，从而在频率等于VCO的谐振频率的次级电感器两端产生输出信号。