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Multiband Antenna Q Optimization using Stored Energy Expressions

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Author

Summary, in English

A method to compute antenna Q from a single frequency current distribution is applied to the optimization of multiband radiating structures. A genetic algorithm produces suboptimal structures in the sense of simultaneous multiband minimum Q. These structures model in a simplified manner common wireless communication devices. The comparison with the physical bounds for the considered situations shows that the suboptimal structures perform close to their limitations. Matching networks are designed using real component models with a commercial tool. These networks have less than three components and provide less than -6.5dB reflection coefficient magnitude in all considered bands. The results show that the single frequency Q estimation method may be useful for antenna design

Publishing year

2014

Language

English

Pages

646-649

Publication/Series

IEEE Antennas and Wireless Propagation Letters

Volume

13

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

Research group

  • Electromagnetic theory

ISBN/ISSN/Other

  • ISSN: 1548-5757