基本信息:
- 专利标题： 具有失真后模式和高增益模式的低噪声放大器
- 专利标题（英）：Lna having a post-distortion mode and a high-gain mode
- 申请号：CN200980103964.6 申请日：2009-02-06
- 公开(公告)号：CN101933228A 公开(公告)日：2010-12-29
- 发明人： 克里斯琴·霍伦斯泰因 , 邓君雄 , 金那苏
- 申请人： 高通股份有限公司
- 申请人地址： 美国加利福尼亚州
- 专利权人： 高通股份有限公司
- 当前专利权人： 高通股份有限公司
- 当前专利权人地址： 美国加利福尼亚州
- 代理机构： 北京律盟知识产权代理有限责任公司
- 代理人： 刘国伟
- 优先权： 12/027,107 2008.02.06 US
- 国际申请： PCT/US2009/033474 2009.02.06
- 国际公布： WO2009/100387 EN 2009.08.13
- 进入国家日期： 2010-08-03
- 主分类号： H03F3/45
- IPC分类号： H03F3/45 ; H03F3/193 ; H03F1/32 ; H03G1/00
A differential low noise amplifier (LNA) is operable in a selectable one of two modes. The LNA includes a first transistor (204), a second transistor (205), a third transistor (206) and a fourth transistor. In the first mode (PDC mode), the four transistors are configured to operate as a post-distortion cancellation (PDC) LNA. The third (206) and fourth (207) transistors operate as cancel transistors that improve linearity, but reduce LNA gain somewhat. In the second mode (high gain mode), the third (206) and fourth (207) transistors are configured so that amplified versions of the LNA input signal that they output are added to amplified versions of the LNA input signal that are output by the first and second main transistors (204, 205), resulting in increased gain. Multiplexing circuits are provided within the LNA so that the LNA is configurable into a selectable one of the two modes by controlling a digital mode control signal supplied to the LNA.
公开/授权文献:
- CN101933228B 具有失真后模式和高增益模式的低噪声放大器及其控制方法 公开/授权日：2013-05-08