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Optimization of Printed Yagi Antenna Using Invasive Weed Optimization (IWO)

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4 Author(s)
Sedighy, S.H. ; Dept. of Electr. Eng., Iran Univ. of Sci. & Technol. (IUST), Tehran, Iran ; Mallahzadeh, A.R. ; Soleimani, M. ; Rashed-Mohassel, J.

In this letter, the Invasive Weed Optimization (IWO) method is applied to design and optimize a printed Yagi antenna. The optimization goals are set to reach an antenna with a VSWR less than 1.5 and a high-gain radiation pattern. The fitness function is calculated by FEKO, which uses the method of moments for evaluating the structures. By implementing this simple closed-loop algorithm, the best available structure has been achieved compared to the results of the previous studies. Finally, a C-band optimized version of the antenna is fabricated and tested. The experimental data are in good agreement with the simulation results, which verifies the performance of the IWO method.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )