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Design of wideband high‐efficiency power amplifier based on continuous inverse modes
Author(s) -
Zhao Ziming,
Zhu XiaoWei,
Zhang Lei
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22703
Subject(s) - amplifier , wideband , adjacent channel power ratio , broadband , electronic engineering , adjacent channel , power bandwidth , bandwidth (computing) , electrical engineering , power added efficiency , computer science , predistortion , engineering , telecommunications , rf power amplifier
This paper presents a wideband high‐efficiency power amplifier (PA) based on novel continuous inverse modes (NCIMs). The NCIMs mainly provides a wider impedance design space by introducing freedom factors. More importantly, a combination of two frequency‐point harmonic‐tuned network and fundamental reactance compensation matching networks is employed simply to design a broadband output matching network for achieving a broadband high‐efficiency goal. Eventually, for the sufficient verification, a broadband high‐efficiency PA achieves a measured 112.2% bandwidth from 0.9 to 3.2 GHz, while delivering an outstanding performance of 10 to 12.3 dB gain, 60.7% to 84.1% drain efficiency, and 40 to 42.3 dBm output power over the entire frequency band. Furthermore, when driven by a 40 MHz four‐carrier OFDM modulation signal, the adjacent channel power ratio (ACPR) is measured better than − 46.3 dBc across the band with digital pre‐distortion technology.