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Title Left-handed metamaterial (lhm) structure stacked on a two-element microstrip antennas array / Fitri Yuli Zulkifli, Nugroho Adi Saputro, Basari Basari, Eko Tjipto Rahardjo
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ISBN/ISSNnone20872100
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VolumeVol 7, No 4 (2016) 683-690
Electronic Access http://www.ijtech.eng.ui.ac.id/index.php/journal/article/view/2865
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Antenna can be one of the largest components in a
wireless device; therefore antenna miniaturization can reduce the overall size
of wireless devices. One method used to reduce the element size of an antenna is by using metamaterial structures. This
paper discusses a Left-Handed Metamaterial (LHM) structure stacked on a two-element microstrip antennas array for miniaturization and gain enhancement at a frequency of 2.35 GHz. To observe the impact of the LHM
structure on the antenna, first this paper discuss the design of a
conventional rectangular shape microstrip antenna without a LHM structure, then a design of the LHM structure
which shows both negative permittivity and negative permeability. This LHM
structure is then implemented on a
conventional single element microstrip antenna and on a two-element microstrip antennas array. Results and discussion of implementation of the LHM
structure on the conventional microstrip antenna is provided in this paper. The
results show that good agreement between simulated and measured results has
been achieved. The simulation results show that the antenna works at a frequency of 2.29?2.42 GHz with a bandwidth of 128 MHz (5.4%) and a gain of 8.2 dBi, while the measurements show that the antenna works at a frequency of 2.26?2.41 GHz with a bandwidth of 146 MHz (6.21%) and a gain of 8.97 dBi. In addition, by comparing the substrate
dimension for the two element array antennas, with and without the LHM
structure, shows a 39% reduction is achieved.
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