Size Reduction of Multi-Band Antennas Using Feature-Based Optimization
Size Reduction of Multi-Band Antennas Using Feature-Based Optimization
- Author(s): S. Koziel and A. Bekasiewicz
- DOI: 10.1049/cp.2017.0309
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- Author(s): S. Koziel and A. Bekasiewicz Source: Loughborough Antennas & Propagation Conference (LAPC 2017), 2017 page (4 pp.)
- Conference: Loughborough Antennas & Propagation Conference (LAPC 2017)
- DOI: 10.1049/cp.2017.0309
- ISBN: 978-1-78561-699-0
- Location: Loughborough, UK
- Conference date: 13-14 Nov. 2017
- Format: PDF
Explicit size reduction of multi-band antennas using EM-driven design optimization is presented. The major challenge of multi-band antenna miniaturization is the necessity of independent control of frequency allocation and depths of several resonances while attempting to reduce physical dimensions of the structure at hand at the same time. In this work, we exploit feature-based optimization (FBO) framework which is well suited for handling multi-band antenna responses. The primary objective of the optimization process is the footprint area of the antenna, whereas design specifications imposed on reflection characteristics are handled by means of a penalty function approach. Owing to the general properties of FBO (i.e., “flattening” of the functional landscape) the design optimization costs can be kept at an acceptable levels of a few dozen of evaluation of the EM simulation model of the antenna. The proposed methodology is demonstrated using two structures, a dual-band patch antenna, and a triple-band dipole antenna.
Inspec keywords: frequency allocation; optimisation; dipole antennas; multifrequency antennas; microstrip antennas
Subjects: Radio links and equipment; Single antennas; Optimisation techniques
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