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Physical bounds of antennas

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Author

Summary, in English

Design of small antennas is challenging because fundamental physics limits the performance. Physical bounds provide basic restrictions on the antenna performance solely expressed in the available antenna design space. These limits offer antenna designers a-priori information about the feasibility of antenna designs and a figure of merit for different designs. Here, an overview of physical bounds on antennas and the development from circumscribing spheres to arbitrary shaped regions and embedded antennas are presented. The underlying assumptions for the methods based on circuit models, mode expansions, forward scattering, and current optimization are illustrated and their pros and cons are discussed. The physical bounds are compared with numerical data for several antennas.

Publishing year

2015

Language

English

Publication/Series

Technical Report LUTEDX/(TEAT-7240)/1-38/(2015)

Document type

Report

Publisher

Electromagnetic Theory Department of Electrical and Information Technology Lund University Sweden

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

Project

  • EIT_CACO-EMD Complex analysis and convex optimization for EM design

Report number

TEAT-7240

Research group

  • Electromagnetic theory