Concurrent impedance and noise matching transconductance amplifier and receiver implementing same

摘要

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.

主权项

1. Receiving circuitry configured to be implemented in a receiver, said receiving circuitry comprising:
a transconductance amplifier configured to amplify a signal received from a matching network; and a blocking capacitor connected between said transconductance amplifier and a mixer, wherein said mixer is configured to output a down-converted signal corresponding to said amplified signal output by said transconductance amplifier, and said blocking capacitor is configured to increase an amplitude ratio of said down-converted signal to said amplified receive signal to increase a front-end gain produced by the receiver.