An Efficient Method for Antenna Design Based on a Self-Adaptive Bayesian Neural Network-Assisted Global Optimization Technique

Yushi Liu, Bo Liu, Masood Ur-Rehman, Muhammad Ali Imran, Mobayode O. Akinsolu, Peter Excell, Qiang Hua

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Gaussian process (GP) is a very popular machine learning method for online surrogate-model-assisted antenna design optimization. Despite many successes, two improvements are important for the GP-based antenna global optimization methods, including: 1) the convergence speed (i.e., the number of necessary electromagnetic (EM) simulations to obtain a high-performance design) and 2) the GP model training cost when there are several tens of design variables and/or specifications. In both aspects, the state-of-the-art GP-based methods show practical but not desirable performance. Therefore, a new method, called the self-adaptive Bayesian neural network surrogate-model-assisted differential evolution (DE) for antenna optimization (SB-SADEA), is presented in this article. The key innovations include: 1) the introduction of the Bayesian neural network (BNN)-based antenna surrogate modeling method into this research area, replacing GP modeling, and 2) a bespoke self-adaptive lower confidence bound (LCB) method for antenna design landscape making use of the BNN-based antenna surrogate model. The performance of SB-SADEA is demonstrated by two challenging design cases, showing considerable improvement in terms of both convergence speed and machine learning cost compared with the state-of-the-art GP-based antenna global optimization methods.
Original languageEnglish
Article number9915328
Pages (from-to)11375-11388
Number of pages14
JournalIEEE Transactions on Antennas and Propagation
Volume70
Issue number12
Early online date10 Oct 2022
DOIs
Publication statusPublished - 22 Dec 2022
Externally publishedYes

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