ELEE 5318/6352 Special Problems-Part I
نویسنده
چکیده
Dipole antenna is the simplest and widely used antenna in telecommunication applications which consists of two identical conductive metal wires. Dipole antenna performance is dependent on many parameters such as metal conductivity, length, radius of wire, surrounding medium, feeding point and etc. but, In this article, we are studying the effect of length and radius on the performance of these kind of antennas. In the following sections, we describe principles underlying dipole antenna operation and introduce the most important performance metrics used for characterizing it. Input power to the antenna can be calculated knowing the antenna input impedance and source output impedance. In this article, we study the effect of length on input impedance of a dipole antenna.
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ELEE 5318/6352 Special Problems 2 -Part II
End-fire arrays have broader beam-width in compare with broadside arrays and they are less directive. In order to enhance end-fire array characteristics without destroying any other characteristics, a new modification on end-fire array was proposed by Hansen and Woodyard to improve the directivity of the ordinary end-fire arrays. The arrays designed by this new method are known as Hansen-Woodya...
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