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 language | English |
|---|---|
| Pages (from-to) | 1493-1499 |
| Number of pages | 7 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 59 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 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