Concurrent impedance and noise matching transconductance amplifier and receiver implementing same
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United States of America Patent
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Nov 11, 2014
Issued Date -
N/A
app pub date -
Jul 20, 2010
filing date -
Jul 20, 2010
priority date (Note) -
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Abstract
According to one embodiment, a concurrent impedance and noise matching transconductance amplifier designed for implementation in a receiver comprises an input device configured to couple to a matching network of the receiver, and a boost capacitor connected to the input device to increase an input capacitance of the transconductance amplifier. The boost capacitor is selected to substantially minimize the receiver noise and to enable the concurrent impedance and noise matching of the receiver and the matching network. In one embodiment, the receiver comprises the transconductance amplifier to provide an amplified receive signal, and a mixer to produce a down-converted signal corresponding to the amplified receive signal, wherein the mixer is coupled to the transconductance amplifier by a blocking capacitor. The blocking capacitor is selected to substantially increase an amplitude ratio of the down-converted signal to the amplified receive signal to substantially increase the front-end gain of the receiver.
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