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Optimal antenna currents for Q, superdirectivity, and radiation patterns using convex optimization

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Author

Summary, in English

The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that provide upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-fields are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.

Publishing year

2013

Language

English

Pages

1109-1118

Publication/Series

IEEE Transactions on Antennas and Propagation

Volume

61

Issue

3

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • small antennas
  • convex optimization
  • Q-factor

Status

Published

Research group

  • Electromagnetic theory

ISBN/ISSN/Other

  • ISSN: 0018-926X