Author:
Song Kexin,Lv Shengyang,Qin Zhifei,Xia Lei
Abstract
Abstract
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.