BOBI, BOBI (2025) REDUKSI MUTUAL COUPLING ANTENNA TEXTILE MIMO PADA FREKUENSI 2.45 GHz. S2 thesis, Universitas Mercu Buana Jakarta - Menteng.
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Abstract
Mutual coupling merupakan salah satu tantangan utama dalam pengembangan antena tekstil berbasis Multiple-Input Multiple-Output (MIMO), terutama pada frekuensi kerja 2,45 GHz yang digunakan secara luas dalam aplikasi Wireless Body Area Network (WBAN) dan Internet of Things (IoT). Efek mutual coupling dapat menyebabkan penurunan kapasitas kanal, degradasi kualitas sinyal, serta menurunnya efisiensi sistem komunikasi secara keseluruhan. Oleh karena itu, diperlukan strategi desain antena yang mampu meminimalkan interaksi elektromagnetik antar elemen antena yang berdekatan. Penelitian ini mengusulkan metode modifikasi struktur antena tekstil dengan penambahan slot sebagai solusi untuk mengurangi efek mutual coupling. Antena dirancang menggunakan bahan jeans sebagai substrat, dengan konfigurasi satu slot berbentuk potrait dan tiga slot berbentuk landscape yang ditempatkan pada bagian tengah patch. Modifikasi ini bertujuan untuk meningkatkan karakteristik antena, seperti bandwidth, gain, dan pola radiasi, tanpa mengorbankan fleksibilitas dan kenyamanan pemakaian. Simulasi dilakukan menggunakan perangkat lunak HFSS untuk mendapatkan parameter S-parameter dan pola radiasi awal. Hasil simulasi menunjukkan bahwa nilai mutual coupling (S21) berhasil diturunkan dari -42,66 dB menjadi -58,32 dB setelah dilakukan modifikasi. Selanjutnya, antena difabrikasi dan diuji menggunakan Vector Network Analyzer (VNA), menghasilkan nilai S21 sebesar - 78,19 dB. Penurunan total sebesar 35,53 dB menunjukkan efektivitas metode modifikasi yang diterapkan,Pola radiasi yang dihasilkan bersifat omnidirectional, dengan distribusi energi yang merata dan cakupan sinyal yang luas, menjadikannya ideal untuk aplikasi wearable. Penelitian ini memberikan kontribusi terhadap pengembangan antena tekstil MIMO yang efisien dan dapat diintegrasikan ke dalam sistem komunikasi modern, serta membuka peluang untuk eksplorasi lebih lanjut dalam desain antena berbasis bahan fleksibel. Mutual coupling is one of the major challenges in the development of textilebased Multiple-Input Multiple-Output (MIMO) antennas, particularly at the operating frequency of 2.45 GHz, which is widely used in Wireless Body Area Network (WBAN) and Internet of Things (IoT) applications. This phenomenon can lead to reduced channel capacity, degraded signal quality, and overall decreased efficiency in wireless communication systems. Therefore, an effective antenna design strategy is required to minimize electromagnetic interaction between closely spaced antenna elements. This research proposes a structural modification method by introducing slots into the textile antenna design to reduce mutual coupling. The antenna is fabricated using jeans material as the substrate, with one portrait-shaped slot and three landscape-shaped slots placed in the center of the patch. These modifications aim to enhance antenna characteristics such as bandwidth, gain, and radiation pattern, while maintaining flexibility and wearability. Simulations were conducted using HFSS software to obtain initial Sparameters and radiation patterns. The results show that the mutual coupling value (S21) was successfully reduced from -42.66 dB to -58.32 dB after modification. Further fabrication and measurement using a Vector Network Analyzer (VNA) revealed a significant decrease in S21 to -78.19 dB. The total reduction of 35.53 dB demonstrates the effectiveness of the proposed modification method,The resulting radiation pattern is omnidirectional, with evenly distributed energy and wide signal coverage, making it ideal for wearable applications. This study contributes to the advancement of efficient textile MIMO antennas that can be integrated into modern communication systems and opens opportunities for further exploration in flexible antenna design.
| Item Type: | Thesis (S2) |
|---|---|
| NIM/NIDN Creators: | 55422110005 |
| Uncontrolled Keywords: | Slot Antena, MIMO, 2.45 GHz, Mutual Coupling, Antena Textile Antena slot, MIMO, 2.45 GHz, Mutual Coupling,Textile Antena |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.3 Electrical Engineering, Lighting, Superconductivity, Magnetic Engineering, Applied Optics, Paraphotic Technology, Electronics Communications Engineering, Computers/Teknik Elektro, Pencahayaan, Superkonduktivitas, Teknik Magnetik, Optik Terapan, Tekn |
| Divisions: | Pascasarjana > Magister Teknik Elektro |
| Depositing User: | Maulana Arif Hidayat |
| Date Deposited: | 11 Oct 2025 03:44 |
| Last Modified: | 11 Oct 2025 03:44 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/99033 |
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