Design of Miniaturized Antenna for IoT Applications Using Metamaterial

Authors

DOI:

https://doi.org/10.31436/iiumej.v24i1.2505

Keywords:

Miniaturized antenna, IoT Applications, Metamaterial

Abstract

With the accelerated development of wireless technology, miniaturized antennae have become outstandingly favored due to the growing demand of Internet of Things (IoT) devices that are essential to accommodate low power, high data rates, and long-range communication. When an antenna operates at lower frequencies, the size of the antenna becomes bulky, which has raised an issue in the integration of the antennae within IoT devices due to their size constraints. Hence, in this paper, a miniaturized ring-monopole antenna incorporated with Rectangular Complementary Split Ring Resonator (RCSRR) and slotted ground plane, was designed at 2.4 GHz and 5.8 GHz frequency bands. The antenna was miniaturized by 46.8 % with overall size of 30 mm x 24.8 mm x 1.6 mm, and it was printed on FR-4 substrate with dielectric constant of 4.3. Design optimization was carried out by modifying the antenna structure, optimizing the dimensions, and using a low loss Rogers RT5880 substrate with a dielectric constant of 2.2, and thickness of 1.575 mm. The width of the antenna was also reduced to 20 mm which furthered the size reduction to 57.8 %. From the simulation results, the antenna was operated at 2.448 GHz, 2.864 GHz, and 5.8 GHz frequency bands with good return loss at -13.872 dB, -33.491 dB, and -19.3 dB respectively. The antenna fabrication and measurement were also implemented to the best simulated design using different substrates to validate its performance by comparing the simulated results with the measured results.

ABSTRAK: Dengan perkembangan pesat teknologi tanpa wayar, antena miniatur telah menjadi sangat digemari kerana permintaan yang semakin meningkat bagi peranti Internet Benda (IoT), iaitu mempunyai kuasa rendah, kadar data yang tinggi dan berkomunikasi jarak jauh. Apabila antena beroperasi pada frekuensi rendah, saiz antena menjadi besar, ini menimbulkan isu kekangan saiz pada antena ketika berada dalam peranti IoT. Oleh itu, kajian ini adalah berkenaan antena ekakutub-gelang kecil yang digabungkan dengan Resonator Gelang Pemisah Pelengkap Segiempat Tepat (RCSRR) dan satah tanah berslot, telah direka bentuk pada jalur frekuensi 2.4 GHz dan 5.8 GHz. Antena telah dikecilkan sebanyak 46.8 % dengan saiz keseluruhan 30 mm x 24.8 mm x 1.6 mm, dan ia dicetak pada substrat FR-4 dengan pemalar dielektrik 4.3. Reka bentuk optimum telah dilakukan dengan mengubah suai struktur antena, berdimensi optimum, menggunakan substrat Rogers RT5880 rendah kuasa dengan pemalar dielektrik 2.2, dan berketebalan 1.575 mm. Lebar antena juga dikurangkan sebanyak 20 mm, ini bermakna  pengurangan saiz berjaya ditingkatkan kepada 57.8%. Dapatan simulasi menunjukkan antena telah beroperasi pada jalur frekuensi 2.448 GHz, 2.864 GHz dan 5.8 GHz dengan pengurangan kehilangan pulangan kuasa yang baik iaitu pada -13.872 dB, -33.491 dB dan -19.3 dB masing-masing. Fabrikasi dan pengukuran antena juga telah dilaksanakan pada reka bentuk simulasi terbaik menggunakan substrat yang berbeza bagi mengesahkan kemampuannya dengan membandingkan dapatan simulasi dengan hasil yang diukur.

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Published

2023-01-04

How to Cite

Jusoh, A. Z., Husain, N. F., Abdul Malek, N. F., Mohd Isa, F. N., & Mohamad, S. Y. (2023). Design of Miniaturized Antenna for IoT Applications Using Metamaterial. IIUM Engineering Journal, 24(1), 122–137. https://doi.org/10.31436/iiumej.v24i1.2505

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Electrical, Computer and Communications Engineering

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