Gain compensation circuit
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United States of America Patent
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Feb 17, 2009
Grant Date -
Nov 6, 2008
app pub date -
Sep 10, 2007
filing date -
May 4, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gain compensation circuit, applied to a microwave transceiver, includes a gain adjuster, a first attenuator and a second attenuator. The gain adjuster is disposed between a first amplifier and a filter for adjusting a nominal gain of the microwave transceiver. The first attenuator is disposed between the filter and a second amplifier for providing a first gain compensation. The second attenuator is electrically connected to the output of the second amplifier for providing a second gain compensation. The first and second gain compensations keep the gain of the microwave transceiver at a constant value under varying temperature conditions, and the first and second attenuators are used to reduce the degradation of return loss and noise figure of the microwave transceiver.
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