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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mandal, D. Bhattacharjee, A.K. Ghoshal, S.P. |
| Copyright Year | 2009 |
| Description | Author affiliation: Electrical Engineering, National Institute of Technology Durgapur, West Bengal, India- 713209 (Ghoshal, S.P.) || Electronics and Communication Engineering, National Institute of Technology Durgapur, West Bengal, India- 713209 (Mandal, D.; Bhattacharjee, A.K.) |
| Abstract | In this paper the maximum sidelobe level (SLL) reductions of three-ring concentric circular antenna arrays (CCAA) are examined using two different classes of evolutionary optimization techniques to finally determine the global optimal three-ring CCAA design. Apart from physical construction of a CCAA, one may broadly classify its design into two major categories: uniformly excited arrays and non-uniformly excited arrays. The present paper assumes non-uniform excitations and uniform spacing of excitation elements in each three-ring CCAA design and a design goal of maximizing SLL reduction associated with optimal beam patterns and beam widths. The design problem is modeled as an optimization problem for each CCAA design. Binary coded Genetic Algorithm (BGA) and Bacterial Foraging Optimization (BFO) are used to determine an optimum set of normalized excitation weights for CCAA elements, which, when incorporated, results in a radiation pattern with optimal (maximum) SLL reduction. Among the various CCAA designs the three-ring CCAA containing (N1=4, N2=6, N3=8) elements proves to be global optimal design. BFO yields global minimum SLL (−14.98 dB) and global minimum BWFN (75.8°) for the optimal design. |
| Starting Page | 1247 |
| Ending Page | 1252 |
| File Size | 172075 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424450534 |
| DOI | 10.1109/NABIC.2009.5393753 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-12-09 |
| Publisher Place | India |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Shape Bacteria Foraging Optimization (BFO) Mobile antennas Equations Design optimization Genetic algorithms Wireless communication Non-uniform Excitation Concentric Circular Antenna Array (CCAA) Sidelobe Level (SLL) Chemical elements Structural beams Binary coded Genetic Algorithm (BGA) Antenna arrays Antenna radiation patterns First null beamwidth (BWFN) |
| Content Type | Text |
| Resource Type | Article |
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