DOHERTY POWER AMPLIFICATION APPARATUS AND METHOD

摘要

A multi-way Doherty power amplifier, DPA, is disclosed, comprising a first path comprising a carrier amplifier or at least one carrier amplifier segment partitioned from the carrier amplifier; a second to N-th paths each comprising at least one carrier amplifier segment and/or at least one peaking amplifier segment partitioned from a peaking amplifier; and a power splitter for splitting an input power signal to each of the at least one carrier amplifier segment and/or at least one peaking amplifier segment in a same path, wherein N is an integer not less than 2; a signal preparation unit configured for generating separately input power signal for the first path and each of the second path to N-th paths; and an impedance inverting network configured for combining output signal power from each path. The performance of each amplifier cell can be maximized independently without any compromises made for each other.

主权项

1. A multi-way Doherty power amplifier, DPA, comprising:
a first path comprising one of a carrier amplifier and at least one carrier amplifier segment partitioned from the carrier amplifier; a second to N-th paths each comprising at least one of at least one carrier amplifier segment and at least one peaking amplifier segment partitioned from a peaking amplifier; and a power splitter for splitting an input power signal to each of the at least one of the at least one carrier amplifier segment and at least one peaking amplifier segment in a same path, wherein N is an integer not less than 2; a signal preparation unit configured for generating separately input power signal for the first path and each of the second path to N-th paths; and an impedance inverting network configured for combining output signal power from each path.