Unconditional Stability Analysis of N-Port Networks Based on Structured Singular Value Computation
Abstract
In this paper, a novel approach based on robust stability concepts and tools is introduced to evaluate the unconditional stability of microwave active -port devices. An efficient calculation of the Structured Singular Value of the x scattering matrix is proposed to obtain the stability characteristics of the device. The presented method is validated in two ways. First, it is applied to a referential 4x4 scattering parameter set for independent verification. Second, the method is applied to a 4-port GaAs FET amplifier fabricated in hybrid technology. The results confirm the validity and computational efficiency of the proposed approach.
Cite
@article{arxiv.2406.19342,
title = {Unconditional Stability Analysis of N-Port Networks Based on Structured Singular Value Computation},
author = {Aimar Mateo and Ibone Lizarraga and Jorge Terrer and Aitziber Anakabe and J. M Collantes},
journal= {arXiv preprint arXiv:2406.19342},
year = {2026}
}
Comments
Updated to the Author Accepted Manuscript (AAM) of the paper included in the Proceedings of the 2024 IEEE Asia-Pacific Microwave Conference (APMC). Only minor formatting differences compared to the previous arXiv version