Topology Optimization of Sub-Wavelength Antennas

Topology Optimization of Sub-Wavelength Antennas

We propose a topology optimization strategy for the systematic design of a three-dimensional (3D), conductor-based sub-wavelength antenna. The post-processed finite-element (FE) models of the optimized structure are shown to be self-resonant, efficient and exhibit distorted omnidirectional, elliptic...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2011-01, Vol.59 (1), p.58-69
Hauptverfasser: Erentok, Aycan, Sigmund, Ole
Format: Artikel
Sprache:eng
Schlagworte:
Antenna design
Antennas
Applied sciences
Bandwidth
Conductivity
electrically small antennas
Exact sciences and technology
Impedance
Materials
Optimization
Q factor
Radiocommunications
Telecommunications
Telecommunications and information theory
Topology
topology optimization
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Beschreibung
Zusammenfassung:We propose a topology optimization strategy for the systematic design of a three-dimensional (3D), conductor-based sub-wavelength antenna. The post-processed finite-element (FE) models of the optimized structure are shown to be self-resonant, efficient and exhibit distorted omnidirectional, elliptically polarized far-field radiation patterns. The computed approximate Q value for this antenna is Q Z (ω 0 )≈ 7.74 for ω 0 =2π × 350.8 MHz and it is 1.64 times larger than the theoretical lower bound value.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2010.2090451