Circuit for controlling power amplifier quiescent

专利名称：Circuit for controlling power amplifier

quiescent current

发明人：Amish Naik,Andre Metzger,Thomas L.

Fowler

申请号：US11390576申请日：20060327公开号：US07193460B1公开日：20070320

专利附图：

摘要：According to one exemplary embodiment, a circuit arrangement includes apower amplifier configured to receive an RF input signal. The circuit arrangement further

includes a control circuit configured to receive and convert the RF input signal to anoutput DC voltage. The control circuit includes a voltage amplifier coupled to a peakdetector circuit, where the peak detector circuit outputs the output DC voltage. Thecircuit arrangement further includes an analog control bias circuit coupling the output DCvoltage to a bias input of the power amplifier. The output DC voltage causes the poweramplifier to have a quiescent current that increases in a way that is substantiallylogarithmic with respect to the amplitude of the RF input signal. An increase in the RFinput power can cause a substantially linear increase in the output DC voltage, where theRF input power is measured in dBm.

申请人：Amish Naik,Andre Metzger,Thomas L. Fowler

地址：Los Angeles CA US,La Jolla CA US,Moorpark CA US

国籍：US,US,US

代理机构：Farjami & Farjami LLP

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