RF transceiver with distributed filtering topology

摘要

This disclosure includes embodiments of a radio frequency (RF) transceiver having a distributed duplex filtering topology. The RF transceiver includes a power amplifier and a tunable RF duplexer. The tunable RF duplexer is configured to input an RF transmission input signal from the power amplifier, generate an RF transmission output signal that operates within an RF transmission band in response to the RF transmission input signal from the power amplifier, and simultaneously output the RF transmission output signal to an antenna and input an RF receive input signal that operates within an RF receive band from the antenna. The power amplifier includes a plurality of RF amplifier stages coupled in cascode and an RF filter coupled between a first one of the RF amplifier stages and a second one of the RF amplifier stages. Accordingly, the RF filter is configured to provide tuning within the RF receive band.

主权项

1. A radio frequency (RF) transceiver having a distributed duplex filtering topology comprising:
a power amplifier comprising a plurality of RF amplifier stages coupled in cascode and an RF filter coupled between a first one of the plurality of RF amplifier stages and a second one of the plurality of RF amplifier stages, wherein:
each of the plurality of RF amplifier stages is configured to amplify an RF transmission input signal that operates within an RF transmission band of an RF communication band; andthe RF filter has a frequency response that defines a stopband and is tunable to provide the stopband within an RF receive band of the RF communication band; and a tunable RF duplexer configured to input the RF transmission input signal from the power amplifier, generate an RF transmission output signal that operates within the RF transmission band in response to the RF transmission input signal from the power amplifier, and simultaneously output the RF transmission output signal to an antenna and input an RF receive input signal that operates within the RF receive band from the antenna.