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Paper Information

Journal:   AMIRKABIR   Fall 2003 , Volume 14 , Number 56-A; Page(s) 233 To 235.
 
Paper: 

SIDE LOBE REDUCTION IN VIVALDI ARRAY RADIATION PATTERN USING GENETIC ALGORITHM ‎AND FDTD

 
 
Author(s):  BARARI M., TAVAKOLI A., MOINI R.
 
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Abstract: 

In this paper we describe the design and evaluation of Vivaldi elements optimization for operation in the array environment over a wide range of frequency (12-18GHz). The Finite Difference Time Domain (FD TD) is used in design and analysis of finite Vivaldi array and genetic algorithm (GA) for optimization of its radiation pattern. The hybrid method is used to find maximum side lobe level (SLL) over a range of frequency (12-18GHz) by adjustment of the antenna and array parameters. An array SLL improvement of MB was attained by optimization. Here a single Vivaldi antenna and a four-element array are analyzed and compared with measurements. Theoretical and experimental results show good agreement with each other.

 
Keyword(s): WIDEBAND ARRAY ANTENNA , VIVALDI ANTENNA , FINITE DIFFERENCE TIME DOMAIN & GENETIC ALGORITHM
 
References: 
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