发明名称 |
Self-tuned matching network for high efficient power amplifiers |
摘要 |
A passive interface circuit for coupling an output signal from a power amplifier to a load is disclosed. The interface presents an impedance to the power amplifier that increases as the power level in the output signal decreases. In one embodiment, the interface circuit includes a fixed network and a capacitor having a capacitance that varies with the potential across the capacitor. The fixed network couples the output signal to the load. The capacitor is connected in parallel with the load and has a capacitance that increases in response to an increase in potential across the capacitor. The capacitor is preferably a MEM capacitor having plates that move with respect to one another in response to changes in the average potential difference between the plates.
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申请公布号 |
US6977562(B2) |
申请公布日期 |
2005.12.20 |
申请号 |
US20020251273 |
申请日期 |
2002.09.19 |
申请人 |
AGILENT TECHNOLOGIES, INC. |
发明人 |
PARK CHUL HONG |
分类号 |
H03F3/21;H01P5/04;H03F1/08;H03F3/24;(IPC1-7):H03H7/38 |
主分类号 |
H03F3/21 |
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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