公开(公告)号：US09490745B1

公开(公告)日：2016-11-08

申请号：US14602081

申请日：2015-01-21

申请人： Marvell International Ltd.

发明人： Stefano Dal Toso ,  Rinaldo Castello ,  Marco Garampazzi ,  Paulo Mateus Mendes ,  Nicola Codega ,  Danilo Manstretta

IPC分类号： H03B5/12

CPC分类号： H03B5/1296 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B2200/0054

摘要： A voltage-controlled oscillator comprises a tank circuit and first and second pairs of transistors. Each transistor comprises a gate, a drain, and a source. The drains of the first pair are coupled to the tank circuit and the gates of the first pair are cross-coupled with the drains of the first pair. The drains of the second pair are coupled to the tank circuit and the gates of the second pair are cross-coupled with the drains of the second pair. The oscillator includes a first resonant filter comprising a first terminal coupled to the sources of the first pair and a second resonant filter comprising a first terminal coupled to the sources of the second pair. A method includes adjusting capacitance in a resonant filter to cause the resonant filter to resonate based on a selected frequency.

摘要翻译： 压控振荡器包括储能电路和第一和第二对晶体管。 每个晶体管包括栅极，漏极和源极。 第一对的排水管连接到油箱回路，第一对的排水口与第一对的排水管交叉耦合。 第二对的排水管连接到油箱回路，第二对的排水口与第二对的排水管交叉耦合。 振荡器包括第一谐振滤波器，其包括耦合到第一对的源极的第一端子和包括耦合到第二对的源极的第一端子的第二谐振滤波器。 一种方法包括调整谐振滤波器中的电容，以使得谐振滤波器基于所选择的频率而谐振。