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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