Metode Pengurangan Mutual Kopling Pada Antena Vivaldi Co-Planar

Goran, Petrus Kerowe (2019) Metode Pengurangan Mutual Kopling Pada Antena Vivaldi Co-Planar. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Antena Vivaldi array merupakan antena yang memiliki frekuensi kerja yang lebar. Tetapi memiliki kelemahan pada Grating Lobe, mutual kopling, Side Lobe Level yang saling mempengaruhi antara elemen antena jika dibuat secara array. Penelitian ini menentukan metode yang terbaik dalam menurunkan mutual kopling antena Vivaldi sehingga S-Parameter antena lebih baik, media antena lebih minimalis serta jarak frekuensi kerja lebih lebar.
Pada penelitian ini dilakukan penurunan mutual kopling dengan metode Substrate Integrated Waveguides (SIW) dan metamaterial. Metode Metamaterial Substrate Integrated Waveguides (SIW) tidak dapat diimplementasikan pada antena Vivaldi karena Antena Vivaldi tidak memiliki grounding. Sehingga pada penelitian ini menggunakan metode metamaterial. Metamaterial terbagi atas 2 metode yaitu Metamaterial Cincin dan Metamaterial Persegi. Hasil yang diperoleh pada simulasi CST antena Vivaldi tanpa metamaterial adalah nilai S12 atau S21 diatas -10dB yaitu pada frekuensi kerja 2 GHZ, 2,2 GHz dan 2,4 GHz dengan nilai -9.6dB, -9.0dB dan -9.2dB. Setelah menggunakan metode metamaterial cincin dan metamaterial persegi diperoleh hasil S12 atau S21 dibawah -10dB pada frekuensi kerja 2 GHz hingga 4 GHz. Pada metamaterial cincin diperoleh nilai S12 atau S21 adalah nilai tertinggi -11.3 dB pada frekuensi terendah 2 GHz, sedangkan nilai terendah -21.2 dB pada frekuensi 3.8 GHz. Sedangkan hasil nilai S12 atau S21 pada metamaterial persegi adalah nilai tertinggi -14.2 dB pada frekuensi 2 GHz dan frekuensi terendah yaitu -21.2 dB pada 3.5 GHz.
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Vivaldi antenna array is an antenna that has a wide working frequency. But it has a weakness in Grating Lobe, mutual coupling, Side Lobe Levels that affect each other between the antenna elements if made in an array. This study determines the best method to reduce the mutual coupling of the Vivaldi antenna so that the S-Parameter antenna is better, the antenna media is more minimalist and the working frequency is wider.
In this study, a decrease in mutual coupling with Substrate Integrated Waveguides (SIW) and metamaterial methods was carried out. Metamaterial Substrate Integrated Waveguides (SIW) methods cannot be implemented on Vivaldi antennas because Antena Vivaldi does not have grounding. So that in this study using metamaterial method. Metamaterial is divided into 2 methods, namely Ring Metamaterial and Square Metamaterial. The results obtained in the simulation of the CST Vivaldi antenna without metamaterial are S12 or S21 values above -10dB that is at the working frequency of 2 GHZ, 2.2 GHz and 2.4 GHz with values of -9.6dB, -9.0dB and -9.2dB. After using the method of ring metamaterial and square metamaterial obtained the results of S12 or S21 below -10dB at a working frequency of 2 GHz to 4 GHz. In the ring metamaterial obtained the value of S12 or S21 is the highest value of -11.3 dB at the lowest frequency of 2 GHz, while the lowest value is -21.2 dB at a frequency of 3.8 GHz. While the results of S12 or S21 values in square metamaterials are the highest value of -14.2 dB at the frequency of 2 GHz and the lowest frequency is -21.2 dB at 3.5 GHz.

Item Type:	Thesis (Masters)
Additional Information:	RTE 621.382 4 Gor m-1 2018
Uncontrolled Keywords:	Mutual Coupling, Substrate Integrated Waveguides (SIW), Meta-material, Co-Planar
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User:	petrus goran
Date Deposited:	13 Sep 2021 07:56
Last Modified:	13 Sep 2021 07:56
URI:	http://repository.its.ac.id/id/eprint/60138

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