发明名称 |
Power amplifier driver and method of using it |
摘要 |
<p>A power amplifier driver (16) provides control voltage inputs to power amplifier (14) at terminal (OUT). An output power control loop is implemented through directional coupler (20) and power amplifier driver (16). Power amplifier driver (16) implements a loop integration function utilizing transconductance amplifiers (60, 62) to convert a detection signal (DET) and a reference signal (REF2) to current for summing at node 58. Transconductance amplifiers (70,72) convert the error voltage generated at node (34) and bias voltage (Vmin) to current for summing at node (36) for subsequent conversion back to voltage by resistor (74). The error voltage at node (36) is buffered (26) to provide adequate current drive at terminal (OUT). <IMAGE></p> |
申请公布号 |
EP1239603(A1) |
申请公布日期 |
2002.09.11 |
申请号 |
EP20010400637 |
申请日期 |
2001.03.09 |
申请人 |
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC |
发明人 |
GENEST, PIERRE |
分类号 |
H04W52/52;H03G3/30;(IPC1-7):H04B7/005 |
主分类号 |
H04W52/52 |
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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