Bandwidth And Gain Enhanced Of Patch Antenna With Metamaterial Waveguide

Abd Razak, Safiah (2017) Bandwidth And Gain Enhanced Of Patch Antenna With Metamaterial Waveguide. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Bandwidth And Gain Enhanced Of Patch Antenna With Metamaterial Waveguide.pdf - Submitted Version Download (502kB)

Abstract

Basically, a microstrip patch antenna (MPA) is fabricate antenna which consists of a metallic patch printed on a grounded substrate. The advantages of microstrip patch antenna offers the of low profile, conformability to a shaped surface, ease of fabrication, low-profile, low cost, planar structure, light weight, ease of integration and portable communication equipment. As the advantage stated, there are some disadvantage of microstrip antenna such as narrow bandwidth and low in gain. There a special technique to overcome these problem such as adding metamaterial waveguide patch antenna structure to increase the bandwidth and gain of microstrip patch antenna. In this project, a waveguide made up from planar metamaterial squared ring is proposed to use in microstrip patch antenna. The simulation result are compared between conventional patch antenna without metamaterial and patch antenna loaded with metamaterial waveguide. The conventional patch antenna resonates at 4.856 GHz with gain of 3.330dB and bandwidth of 255.42MHz (4.7505GHz-4.9759GHz). Meanwhile, patch antenna loaded with metamaterial waveguide structure, it is resonant at 4.852GHz with gain of 4.041dB and bandwidth of 294.19MHz (4.7036GHz – 4.9977GHz) corresponds to WiMAX application. For the measurement value from equipment, the value of measured gain for conventional patch antenna without metamaterial is 2.418 dB but the value of measured gain for patch antenna with metamaterial is 3.27 dB. The value of measured bandwidth for conventional patch antenna without metamaterial is 106MHz but the value of measured bandwidth for patch antenna with metamaterial is 96MHz. From the observation, there is an increment value of gain in patch antenna with metamaterial but there is also decrement value of bandwidth in patch antenna with metamaterial when it compared with conventional patch antenna without metamaterial. The bandwidth of patch antenna with metamaterial is supposed to be increased more than conventional patch antenna without metamaterial because it has been proven in simulation CST. From the observation and analysis, student had found out that there is factor affecting bandwidth of patch antenna with metamaterial is due to the the soldering process.

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