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Implementation of meander line structure for size miniaturization of 4×4 butler matrix
Zulfia, Dewantari A.a, Munir A.a
a Radio Telecomm. and Microwave Lab., School of Electrical Eng. and Informatics, Institut Teknologi Bandung, Bandung, 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]© 2020 IEEE.One method to overcome the problem of co-channel interference in wireless communication systems is by employing a switched-beam antenna system. A Butler matrix is commonly utilized as a beam-forming network for some reasonable factors, e.g. low complexity, low loss, and simply fabrication. However, the bulky size of Butler matrix affects an incompatibility in developing compact devices. In this paper, a meander Une structure which is an approach to reduce the physical dimension of radio frequency components is implemented to miniaturize the size of conventional 4×4 Bulter matrix. Some key parameters of Butler matrix including the amplitude and phase responses are characterized and investigated through several simulations. The characterization results demonstrate that the proposed Butler matrix takes the size of 57.5 mm by 136.4 mm shows good amplitude and phase performances. Л phase difference of -46.98″ ± 6.72″ with an imbalance amplitude less than 5.97 dB was achieved at the operating frequency of 2.4 GHz. Meanwhile, a 10 dB return loss fractional bandwidth of 18.75% could be attained at the frequency range of 2.29 GHz to 2.74 GHz. Here, the use of meander line stmcture could exhibit a size miniaturization of 34.29% to the footprint of conventional 4×4 Butler matrix.[/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]Fractional bandwidths,Meander line structure,Operating frequency,Physical dimensions,Radio frequencies,Size miniaturization,Switched beam antennas,Wireless communication system[/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]Beam-forming,Butler matrix,Meander Une,Size miniaturization[/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/10.1109/ICT49546.2020.09239448[/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]