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Paper Abstract and Keywords
Presentation 2013-05-16 13:00
An Example of Antenna Design Using Multi-level Particle Swarm Optimization
Tuan Hung Nguyen, Hisashi Morishita (National Defense Academy), Yoshio Koyanagi (Panasonic Mobile Comm.), Kazuhiro Izui, Shinji Nishiwaki (Kyoto Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) This report presents a multi-level optimization (MLO) method introduced to particle swarm optimization (PSO) for solving multi-objective optimization problems in antenna design. The method proposes a simple idea of separately minimizing all the sub-objective functions one by one, which is basically different from those of previously investigated methods. In this report, the effectiveness of the proposed MLO method are demonstrated and verified by the results when applying to a specific example, which is a 3-objective optimization problem of an antenna array that consists of two L-shaped folded monopole antennas (LFMAs) operating in the IEEE 802.11 b/g band of WLAN (2400~2484 MHz). Using the proposed method, three sub-objective functions respectively representing the reflection coefficient, the mutual coupling, and the entire antenna volume of the LFMA array are minimized separately in PSO, in order to obtain an optimal LFMA array with smaller size and higher antenna performance. The advantages of the proposed method in both deriving good optimization result and reducing the computational cost in the 3-objective optimization problem of LFMA array are demonstrated by comparing its performance with those of a conventional weighted aggregation (CWA) method, and a method using the concept of Pareto dominance (PD). The optimal LFMA array resulted by the proposed method has a 10% resonant bandwidth (S11≤-10 dB in 2.32~2.57 GHz), S21 reduced completely to less than -15 dB in this band, and the entire antenna volume decreased to only 28.5% of that of the original design.
Keyword (in Japanese) (See Japanese page) 
(in English) Multi-level optimization / PSO / WLAN / folded monopole antenna / antenna array / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 34, AP2013-15, pp. 1-6, May 2013.
Paper # AP2013-15 
Date of Issue 2013-05-09 (AP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee AP  
Conference Date 2013-05-16 - 2013-05-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Beppu International Convention Center B-ConPlaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2013-05-AP 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Example of Antenna Design Using Multi-level Particle Swarm Optimization 
Sub Title (in English)  
Keyword(1) Multi-level optimization  
Keyword(2) PSO  
Keyword(3) WLAN  
Keyword(4) folded monopole antenna  
Keyword(5) antenna array  
1st Author's Name Tuan Hung Nguyen  
1st Author's Affiliation National Defense Academy (National Defense Academy)
2nd Author's Name Hisashi Morishita  
2nd Author's Affiliation National Defense Academy (National Defense Academy)
3rd Author's Name Yoshio Koyanagi  
3rd Author's Affiliation Panasonic Mobile Communications (Panasonic Mobile Comm.)
4th Author's Name Kazuhiro Izui  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
5th Author's Name Shinji Nishiwaki  
5th Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2013-05-16 13:00:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2013-15 
Volume (vol) IEICE-113 
Number (no) no.34 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-AP-2013-05-09 

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