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%%   CHAPTER 6
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\chapter{YAGI-UDA ANTENNA}
\label{Chapter:6}
\lhead{CHAPTER 6. \emph{YAGI-UDA ANTENNA DESIGN}}
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\emph{An antenna is an integral component of a radio communications system that is used to send or receive a radio signal. A radio frequency (RF) signal that has been generated in a radio transmitter travels through a transmission line (coaxial cable) to an antenna. An antenna connected to a transmitter is the device that releases RF energy (in the form of an electromagnetic field) to be sent to a distant receiver. The receiving antenna picks up the RF energy.  As the electromagnetic field strikes the receiving antenna, a voltage is induced into the antenna, which serves as a conductor.  The induced RF voltages are then used to recover the transmitted RF information.}

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\section{Introduction}\index{Yagi Uda Antenna}
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The Yagi antenna was invented in Japan...