NDLI: Rapid electromagnetic-based microwave design optimisation exploiting shape-preserving response prediction and adjoint sensitivities

Content Provider	IET Digital Library
Author	Koziel, Slawomir Ogurtsov, Stanislav Cheng, Qingsha S. Bandler, John W.
Abstract	A new development of the shape-preserving response prediction (SPRP) technique for microwave design optimisation is presented here. The original SPRP method is enhanced by employing low-cost derivative information obtained through adjoint sensitivities. The authors propose using operator notation to simplify the SPRP surrogate description. The enhancement through sensitivity data is twofold: to ensure first-order consistency between the SPRP surrogate and the high-fidelity electromagnetic (EM) model under optimisation and to speed up the surrogate optimisation process. Fast surrogate optimisation allows us to use coarse-discretisation EM simulations as an underlying low-fidelity model and, therefore, efficiently apply SPRP to cases where reliable circuit models are not available (e.g. design of antenna structures). The proposed approach is demonstrated using a dielectric resonator filter and an ultra-wideband monopole antenna. Comparison with three benchmark techniques, including the original SPRP methods, space mapping with sensitivity and direct optimisation of the high-fidelity model, is also provided.
Starting Page	775
Ending Page	781
Page Count	7
ISSN	17518725
Volume Number	8
e-ISSN	17518733
Issue Number	Issue 10, Jul (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/8/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2013.0636
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2014-04-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adjoint Sensitivity Coarse Discretisation EM Simulations Dielectric Resonator Filter Gradient Method High Fidelity Electromagnetic Model Interpolation And Function Approximation Linear Algebra Low Cost Derivative Information Monopole Antenna Numerical Analysis Operator Notation Optimisation Optimisation Technique Passive Filter Passive Network Rapid Electromagnetic Based Microwave Design Optimisation Shape Preserving Response Prediction Single Antenna Space Mapping SPRP Surrogate Surrogate Optimisation Process Ultra Wideband Antenna Ultrawideband Monopole Antenna Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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