X-Circular Polarize Microstrip Patch Antenna

Nur Alyaa Diyana , Ahmad Mufit (2011) X-Circular Polarize Microstrip Patch Antenna. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In this thesis, a project of x-circular polarize microstrip patch antenna with resonant frequency at 2.4GHz with higher gain and directivity and circular polarization in xform for ISM band application is presented. A design of X-Circular Polarize Microstrip Patch Antenna from type of circular slot patch antenna oriented at 450 and -450. The antenna is capable to generate circular polarization in X form. Besides that, a design of x-circular polarize microstrip patch antenna to avoid loss caused by multipath effects which is antena required circular polarization. Design x-circular polarize microstrip patch antenna to avoid mispolarization happen from misalignment of transmitter and receiver antenna. First step is design and simulate xcircular polarize microstrip patch antenna using CST Microwave Studio software to obtain the return loss, bandwidth, radiation pattern, gain, directivity and surface current. In order to verify the results, the antenna is fabricated by using chemical etching process. After that, the return loss is measured by using Advantest Network Analyzer while gain and radiation pattern is measured by using ME 1300 antenna training kit and x-circular polarize microstrip patch antenna as a receiver and horn antenna as a transmitter antenna. The result obtain showed the return loss of the antenna is lower than -10dB at 2.4 GHz and produce higher gain and directivity. Furthermore, the polarization of antenna is x-circular polarization at ±45° which also has acceptable gain.

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