Microstrip Leaky Wave Antenna Design For WLAN Application

Nurliyana , Abd Malik (2009) Microstrip Leaky Wave Antenna Design For WLAN Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project presents an overview of design of Microstrip Leaky-Wave Antenna for Wireless Local Area Network Application. WLAN and wireless information network requires low-cost, low profiles and efficiency smart antenna. Microstrip leaky-wave antenna (MLWA) can be a candidate for its simple construction, low profiles, easy to match and frequency-scanning ability. The circuit was designed by using CST Microwave Studio and the circuit was simulated to obtain the return loss, radiation pattern, gain, directivity, bandwidth, FNBW and HPBW. Design process of MLWA starts with designing the single patch and followed by designing the array antenna by varied the number of elements, N and value of phase different, β. Array Factor equation is used to plot the MLWA radiation pattern and the plot was compared with the simulation result. Minimum resonant frequency occurred when the number of elements is greater. When the number of β increase, the value for directivity and bandwidth will slightly increase. As the number of elements is increase, the multiple beam appear on the radiation pattern will also increase. FR4 photo-resist board is used for the fabrication of the selected design antenna by using chemical etching technique. Finally, the fabricated antenna was measured by using network analyzer and antenna trainer to measure the return loss, directivity, bandwidth, FNBW, HPBW and radiation pattern. The measurement result was compared with the simulation result.

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