发明授权
US5304947A Arrangement for eliminating offset errors in a power control circuit of
a pulsed transmitter final amplifier
失效
用于消除脉冲发射器最终放大器的功率控制电路中的偏移误差的布置
- 专利标题： Arrangement for eliminating offset errors in a power control circuit of a pulsed transmitter final amplifier
- 专利标题（中）： 用于消除脉冲发射器最终放大器的功率控制电路中的偏移误差的布置
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申请号： US30725申请日： 1993-03-12
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公开(公告)号： US5304947A公开(公告)日： 1994-04-19
- 发明人: John T. Carlsson
- 申请人： John T. Carlsson
- 申请人地址： NC Research Triangle
- 专利权人： Ericsson Ge Mobile Communications, Inc.
- 当前专利权人： Ericsson Ge Mobile Communications, Inc.
- 当前专利权人地址： NC Research Triangle
- 优先权： SEX9200819-2 19920317
- 主分类号： H04B1/04
- IPC分类号： H04B1/04 ; H03F1/30 ; H03G3/20 ; H04B7/26 ; H03G3/30
摘要：
A high frequency power amplifier amplifies periodic signals in the form of HF bursts. The power output of the amplifier is adjusted by a control loop which produces a control signal in response to a comparison made between a set-point value (BV) and the actual power output (Put) of the amplifier and applies the signal to the power amplifier. The control loop includes a differential amplifier. A correction circuit measures the output voltage of the differential amplifier over a time period (t.sub.1 to t.sub.2) prior to each HF burst and stores in a memory (C) a magnitude proportional to this output voltage. During the following HF burst, this magnitude is used to introduce into the control loop a correction magnitude (Ukorr) for correction of offset voltages (Uoff) occurring in the control loop.
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