Design Microstrip Square Patch Array Antenna At 2.5GHz By Using Graphene For WiMAX Application

Yully Erwanti, Masrukin (2015) Design Microstrip Square Patch Array Antenna At 2.5GHz By Using Graphene For WiMAX Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 pages) Design Microstrip Square Patch Array Antenna At 2.5GHz By Using Graphene For WiMAX Application 24 Pages.pdf - Submitted Version Download (284kB)

Abstract

In recent time, there is a very large request by the consumer for integrated wireless digital applications. Antenna that preferred in this demand should be low profile, light weight and broad bandwidth. Microstrip antenna be selected to fulfil these requirement. Due to the restraint of microstrip antenna such that low gain, narrow bandwidth with low efficiency, constructing many patch in array configuration is preferred to overwhelm the disadvantages. Nowadays, graphene has attain a great demand from the device community. In this project, graphene is an element that preferred in replacing the copper as patch material to improve the performance of antenna. This is because of its advantages for instance light weight, strong, transparent and good conductor of heat and electricity. This thesis presents the design of microstrip square patch antenna with resonant frequency at 2.5GHz for WiMAX application. The proposed design antennas are single patch and patch array of four by N (4xN) antenna, which N=1, 2, 3 and 4 for two types of patch materials such as graphene and copper. Two thickness of graphene been used in this design such that 0.035mm and 0.35nm. The array of 4xN patch array microstrip square antenna with microstrip line feeding based on quarter wave impedance matching technique was designed and simulated by using Computer Simulation Studio 2011 (CST) software. The performance for the single patch and patch array microstrip antenna for two types of patch materials; graphene and copper are compared in terms of return loss, gain and directivity. From the simulation, the highest return loss obtained is -27.16dB, while gain is 6.4520dB and directivity is 13.180dB. From the overall results, 4x4 patch array antenna of graphene with the thickness of 0.35nm gives the best performance among the others in terms of return loss, gain and directivity. In this project, prove that graphene gives an improvement in the performance of antenna due to its high conductivity.

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