| 发明名称 |
Oscillator Having Dual Topology |
| 摘要 |
An oscillator (200, 300, 350) comprises a tank circuit (100), a first transistor (M1c) and a second transistor (M1r), and the second transistor (M1r) occupies an area of silicon that is smaller than an area of silicon occupied by the first transistor (M1c). A switching apparatus (Sw1 . . . Sw14) selects either one of a first oscillator topology and a second oscillator topology, where in the first oscillator topology, the tank circuit (100) is coupled to the first transistor (M1c) in a first feedback configuration to provide feedback around the first transistor (M1c), and in the second oscillator topology, the tank circuit (100) is coupled to the second transistor (M1r) in a second feedback configuration that is different to the first feedback configuration to provide feedback around the second transistor (M1r). |
| 申请公布号 |
US2014327487(A1) |
申请公布日期 |
2014.11.06 |
| 申请号 |
US201214362279 |
申请日期 |
2012.12.06 |
| 申请人 |
ST-Ericsson SA |
发明人 |
Chataigner Emmanuel;Dedieu Sebastien |
| 分类号 |
H03B5/12 |
主分类号 |
H03B5/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An oscillator comprising:
a tank circuit; a first transistor and a second transistor, wherein the second transistor occupies an area of silicon that is smaller than an area of silicon occupied by the first transistor; and a switching apparatus for selecting either one of a first oscillator topology and a second oscillator topology, wherein in the first oscillator topology, the tank circuit is coupled to the first transistor in a first feedback configuration to provide feedback around the first transistor; and, in the second oscillator topology, the tank circuit is coupled to the second transistor in a second feedback configuration that is different to the first feedback configuration to provide feedback around the second transistor. |
| 地址 |
Plan-les-Ouates CH |
