Variable gain multistage amplifier and receiver

摘要

There is provided a variable gain multistage amplifier including: an input terminal to which the input signal is input; multistage amplifiers amplify the input signal, the multistage amplifiers being connected in series; and an output terminal that outputs the amplified signal, and
the multistage amplifiers include one or more successive cascode amplifiers, one of which is in final stage.

主权项

1. A variable gain multistage amplifier comprising:
an input terminal to which an input signal is input; multistage amplifiers connected in series which amplify the input signal; and an output terminal that outputs an amplified signal, wherein the multistage amplifiers include successive cascode amplifiers, one of the successive cascode amplifiers being in a final stage, the multistage amplifiers, after a predetermined stage, branch into a plurality of signal paths, and each of the plurality of signal paths includes a cascode amplifier in a same number of stages.