发明名称 |
COMMON GATE WITH RESISTIVE FEED-THROUGH LOW NOISE AMPLIFIER |
摘要 |
A radio-frequency amplifier is provided. The radiofrequency amplifier includes a transistor having an input terminal, an output terminal, a control terminal, and a transconductance gm. A series-connected feed-through resistance Rf and feed-through capacitance Cf is connected in parallel with the input terminal and the output terminal of the transistor. A load resistance RL is connected to the output terminal. The control terminal of the transistor is biased at a fixed voltage. Part of the transistor noise follows the looped path through the feed-through resistor instead of passing on to the load, which reduces the noise figure of the amplifier. The value of gm, Rf and RL are chosen in a way to keep the input impedance of the amplifier matched to a well-defined signal source impedance. |
申请公布号 |
WO2004062093(A2) |
申请公布日期 |
2004.07.22 |
申请号 |
WO2003US39174 |
申请日期 |
2003.12.09 |
申请人 |
CALIFORNIA INSTITUTE OF TECHNOLOGY;HAJIMIRI, SEYED-ALI;GUAN, XIANG |
发明人 |
HAJIMIRI, SEYED-ALI;GUAN, XIANG |
分类号 |
H03F3/193 |
主分类号 |
H03F3/193 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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