Reliable assessment of topological modifications in UWB antennas by means of multi-objective optimization

Adrian Bekasiewicz*, Slawomir Koziel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this letter, the problem of systematic and rigorous assessment of effects of topological modifications on the performance of miniaturized UWB antennas has been addressed. The primary assessment tool is fast multi-objective optimization, here, realized using a recent sequential domain patching algorithm. Identification of the Pareto front for an antenna structure, ie, the set of designs representing the best possible tradeoffs between conflicting objectives (here, reflection characteristic and the antenna footprint) allows for conclusive comparison of antenna performance and suitability for space-limited applications. Here, we are interested in the effect of seemingly small topological modifications, the importance of which cannot be detected using parameters sweeps because of heavy interactions between such modifications and the remaining parameters of the structure. An UWB monopole case study demonstrates that small topological amendments may lead to considerable improvement of antenna performance and reduction of its size. Numerical results are supported by experimental validation of the fabricated antenna prototypes.

Original languageEnglish
Pages (from-to)1493-1499
Number of pages7
JournalMicrowave and Optical Technology Letters
Volume59
Issue number7
DOIs
Publication statusPublished - Jul 2017

Bibliographical note

Funding Information:
The authors would like to thank Computer Simulation Technology AG, Darmstadt, Germany, for making CST Microwave Studio available. This work is partially supported by the Icelandic Centre for Research (RANNIS) Grant 152034051 and by National Science Centre of Poland Grant 2015/17/B/ST6/01857.

Publisher Copyright:
© 2017 Wiley Periodicals, Inc.

Other keywords

  • antenna topology
  • compact antennas
  • geometry modifications
  • multi-objective optimization
  • Pareto front
  • performance comparison

Fingerprint

Dive into the research topics of 'Reliable assessment of topological modifications in UWB antennas by means of multi-objective optimization'. Together they form a unique fingerprint.

Cite this