Loading [MathJax]/extensions/MathMenu.js
A new and Reliable Decision Tree Based Small-Signal Behavioral Modeling of GaN HEMT | IEEE Conference Publication | IEEE Xplore

A new and Reliable Decision Tree Based Small-Signal Behavioral Modeling of GaN HEMT


Abstract:

The paper, for the first time, explores multivariable small signal modeling technique of GaN HEMT based on Decision tree. The proposed model presents a novel binary decis...Show More

Abstract:

The paper, for the first time, explores multivariable small signal modeling technique of GaN HEMT based on Decision tree. The proposed model presents a novel binary decision tree to model the GaN HEMT device for multi-biasing and broad frequency range. Bayesian algorithm has been used to find the optimal hyperparameters for better generalization capability and higher accuracy. An excellent agreement is found between the measured S-parameters and the proposed model for complete frequency range of 1GHz-18GHz.
Date of Conference: 04-07 August 2019
Date Added to IEEE Xplore: 31 October 2019
ISBN Information:

ISSN Information:

Conference Location: Dallas, TX, USA

I. Introduction

RF power amplifier is the last component of transmitter chain before transmission of signal to antenna. Currently, Gallium Nitride (GaN) is considered the most promising device technology for high power amplifier design owing to the exciting material properties of GaN. The advanced traits of GaN such as wide bandgap (3.4 eV), high breakdown voltage, high electron mobility (1500 cm2 V-1 s-1) and high frequency operation (device geometry in micrometer), and ability to form heterojunctions (High Electron Mobility Transistor) make it an ideal candidate for designing of high-power amplifiers (HPAs) [1] – [2]. However, GaN device is still not widely used in the design of HPAs due to unavailability of generic large signal model. An accurate small signal model is the primary requirement in building an overall model, before realization in CAD tool for the analysis and simulation of high frequency circuits and systems.

References

References is not available for this document.