Open AccessAnalysis of a Regulated Cascode Cross Couple Power Amplifier
Author(s) -
Kittipong Tripetch
Publication year - 2020
Publication title -
international journal of systems applications, engineering and development
Language(s) - English
Resource type - Journals
ISSN - 2074-1308
DOI - 10.46300/91015.2020.14.20
Subject(s) - impedance matching , cascode , amplifier , polynomial , output impedance , function (biology) , electrical impedance , mathematics , matching (statistics) , computer science , electronic engineering , topology (electrical circuits) , mathematical analysis , electrical engineering , telecommunications , engineering , statistics , combinatorics , bandwidth (computing) , evolutionary biology , biology
The input impedance of a regulated cascode cross couple amplifier is derived. The frequency response of the input impedance polynomial form can be plotted with MATLAB. From the polynomial form of the input impedance of the proposed circuit, it can be transformed by substitute complex frequency s with jω into the polynomial form equation. After that, this function can be grouped into a symbolic real and a symbolic imaginary form. The next step in derivation is to multiply this function with a complex conjugate function of the symbolic complex form of the input impedance. The last step is to plot a real and an imaginary part as a function of the input frequency so that the power amplifier can be matching with the various matching circuit according to the condition of the maximum power transfer.