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Theoretical analysis of resonant frequency for AMC-based absorber composed of square patch array
Nur L.O.a, Kurniawan A.a, Sugihartonoa, Munir A.a
a Radio Telecommunication and Microwave Laboratory, School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b School of Electrical Engineering, Telkom University Jalan Telekomunikasi, Bandung, 40257, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2015, School of Electrical Engineering and Informatics. All rights reserved.The new formulation of resonant frequency for absorber based on artificial magnetic conductor (AMC) structure composed of square patch array is investigated theoretically based on analytical approach. The investigation is performed to define the resonant frequency using equivalent LC circuit model from the physical dimension and material property of square patch array. The proposed equivalent LC circuit model formulas are derived using the conformal mapping theory for the adjacent co-planar square patches and the Gauss’ law and Faraday’s law for the square patch parallel with the ground plane. The analytical approach is then examined and compared with the numerical results of AMC structure simulated by use of commercialized software. Here, the AMC structure consists of a two-dimensionally (2D) array square patches deployed on a dielectric substrate. The frequency range of analysis which is observed from 1-5 GHz corresponds to the working frequency of square patch. Hence, the analyzed parameters of square patch, i.e. unit cell, include substrate width, substrate thickness, substrate properties, patch width, and the gap between patches. It shows that the proposed formulation of equivalent LC circuit model yields better results compared to the existing formulation. Moreover, the proposed formulation shows the bandpass-like structure in which the waves are absorbed in a certain value of frequency band. This is appropriate to the absorbance concept where some absorber will restrain the energy from incoming waves.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Absorber,Artificial magnetic conductor,Resonant frequency,Square patch[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.15676/ijeei.2015.7.2.9[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]