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%%   CHAPTER 2
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\chapter{LITERATURE SURVEY}
\label{Chapter:2}
\lhead{CHAPTER 2. \emph{LITERATURE SURVEY}}
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\emph{The needed detailed literature survey, to get preliminary knowledge and search scope of investigation, to design Yagi-Uda antenna for multiobjective optimization of its various characterstics, i.e., gain, impedance, etc., simultaneously, is explained in this chapter. The principal concepts \& developments that occurred till date, in these domains of research are presented in this chapter with a case built up for taking investigations that this thesis does.}

