CIRCUITS AND METHODS FOR 2G AMPLIFICATION USING 3G/4G LINEAR PATH COMBINATION

摘要

Circuits and methods for 2G amplification using 3G/4G linear path combination. In some embodiments, a front-end architecture can include a first amplification path and a second amplification path, with each being configured to amplify a 3G/4G signal, and the first amplification path including a phase shifting circuit (154). The front-end architecture can further include a splitter (152) configured to receive a 2G signal and split the 2G signal into the first and second amplification paths, and a combiner (160) configured to combine amplified 2G signals from the first and second amplification paths into a common output path. The front-end architecture can further include an impedance transformer (166) implemented along the common output path to provide a desired impedance for the combined 2G signal.