发明名称 |
Radio frequency voltage controlled oscillator |
摘要 |
A radio frequency voltage controlled oscillator (RF VCO) includes a differential oscillator including two field effect transistors (FETs) in which an electric current flows laterally to a substrate and a current source including a bipolar transistor in which the electric current flows in a direction either perpendicular or lateral to the substrate from an emitter to a collector via a base. Therefore, 1/f noise is very small. Resultantly, the RF VCO using the bipolar junction transistor as the current source reduces the 1/f noise generated by the current source of a RF CMOS VCO and, ultimately, the phase noise of the VCO. |
申请公布号 |
US2005062553(A1) |
申请公布日期 |
2005.03.24 |
申请号 |
US20040945906 |
申请日期 |
2004.09.22 |
申请人 |
JEON SANG-YOON;LEE HEUNG-BAE;SUH CHUN-DEOK |
发明人 |
JEON SANG-YOON;LEE HEUNG-BAE;SUH CHUN-DEOK |
分类号 |
H01L27/04;H01L21/822;H01L21/8222;H01L21/8248;H01L21/8249;H01L27/06;H03B5/12;H03B5/24;H03K3/354;(IPC1-7):H03L7/00 |
主分类号 |
H01L27/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|