Dual Polarized Antenna Design For 5.8 Ghz Point To Point Application

Nurul Syahidah , Razali (2009) Dual Polarized Antenna Design For 5.8 Ghz Point To Point Application. Project Report. UTeM, Melaka,Malaysia. (Submitted)

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Abstract

In this thesis, a project of dual polarized antenna with resonant frequency at 5.8GHz point to point application is presented. The dual polarized antennas are traditionally characterized in terms of port-to-port isolation and co- and cross-polar patterns. The dual polarized antenna that‟s investigated is design to produce +45° and -45° electromagnetic field which its vertical and horizontal systems are equivalent with respect to their propagation efficiency that can be used with good results for transmit and receive applications. Besides, the design of dual polarized antenna is considering the ideal requirement which is small, inexpensive and unique structure. First step is by calculating the width and length of the patch. Then, the design is simulate using CST Microwave Studio software to simulate the return loss, bandwidth, radiation pattern, gain, directivity and beam width. In order to verify the results, a prototype antenna is fabricated by using chemical etching techniques. After that, the return loss is measured by using network analyzer while gain and radiation pattern is measured by using spectrum analyzer. The result obtain showed the return loss of the antenna is lower than -10dB at 5.8 GHz and produce higher bandwidth. Furthermore, the polarization of antenna is at ±45° which also has acceptable gain.

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