Expedited Design Closure of Antenna Input Characteristics by Trust Region Gradient Search and Principal Component Analysis - Publication - MOST Wiedzy

Search

Expedited Design Closure of Antenna Input Characteristics by Trust Region Gradient Search and Principal Component Analysis

Abstract

Optimization-based parameter tuning has become an inherent part of contemporary antenna design process. For the sake of reliability, it is typically conducted at the level of full-wave electromagnetic (EM) simulation models. This may incur considerable computational expenses depending on the cost of an individual EM analysis, the number of adjustable variables, the type of task (local, global, single-/multi-objective optimization), and the constraints involved. For these reasons, utilization of conventional algorithms is often impractical. This paper proposes a novel gradient-based algorithm with numerical derivatives for expedited antenna optimization. The improvement of computational efficiency is obtained by employing a rank-one Broyden formula and restricting finite differentiation sensitivity updates to the principal directions of the Jacobian matrix, i.e., those corresponding to the most significant changes of the antenna responses. Comprehensive numerical validation carried out using three wideband antennas indicates that the presented methodology offers considerable savings of sixty percent with respect to the reference trust-region algorithm. At the same time, virtually no degradation of the design quality is observed. Furthermore, algorithm reliability is greatly improved (while offering comparable computational efficiency) over the recent state-of-the-art accelerated gradient-based procedures.

Citations

  • 0

    CrossRef

  • 0

    Web of Science

  • 0

    Scopus

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
IEEE Access no. 8, pages 8502 - 8511,
ISSN: 2169-3536
Language:
English
Publication year:
2020
Bibliographic description:
Tomasson J., Kozieł S., Pietrenko-Dąbrowska A.: Expedited Design Closure of Antenna Input Characteristics by Trust Region Gradient Search and Principal Component Analysis// IEEE Access -Vol. 8, (2020), s.8502-8511
DOI:
Digital Object Identifier (open in new tab) 10.1109/access.2020.2964096
Verified by:
Gdańsk University of Technology

seen 9 times

Recommended for you

Meta Tags