发明名称 |
HIGH-FREQUENCY AMPLIFIER CIRCUIT WITH NEGATIVE IMPEDANCE CANCELLATION |
摘要 |
A high-frequency amplifier circuit includes an amplifying transistor and a driver transistor, with the amplifying transistor being connected in either a common emitter or a common source configuration and the driver transistor being connected in a corresponding common collector or a common drain configuration, depending upon whether bipolar or field effect transistors are used. A current-mirror bias circuit is coupled between an input terminal and an output terminal of the driver transistor, with a resistor being provided for coupling the current mirror to the input terminal of the driver transistor. The resistor, which typically has a value of between about 20 and 100 ohms, provides a negative impedance cancellation effect while minimizing power consumption at low bias levels. |
申请公布号 |
WO0201709(A3) |
申请公布日期 |
2002.07.18 |
申请号 |
WO2001EP06958 |
申请日期 |
2001.06.19 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
LUO, SIFEN;SOWLATI, TIRDAD |
分类号 |
H03F1/02;H03F1/30;H03F3/19;H03F3/193;H03F3/343;H03F3/345 |
主分类号 |
H03F1/02 |
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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