Open AccessA Ka-band Diode-Based Analog Predistortion Linearizer for Solid-State Power Amplifiers
Author(s) -
Kexin Song,
Shengyang Lv,
Zhifei Qin,
Lei Xia
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/428/1/012071
Subject(s) - linearizer , predistortion , amplifier , coplanar waveguide , transmission line , rf power amplifier , schottky diode , electrical engineering , materials science , optoelectronics , bandwidth (computing) , electronic engineering , diode , engineering , telecommunications , microwave
In this paper, A coplanar waveguide transmission type analog predistorter for the Ka-band (29-31GHz) solid-state power amplifier is developed and tested. Two Schottky diodes are adopted symmetrically connected between the main line of the coplanar waveguide transmission line and ground used as non-linear signal generating device. The measured results of the fabricated structure exhibited a gain comprehension greater than 3dB and more than 20 degree phase comprehension capability over 2GHz of bandwidth. As a result, measured 1dB compression point of the power amplifier can be significantly improved by 4.9dB at 30GHz.