Ratnasari, Tri (2025) Desain dan Fabrikasi Antena Mikrostrip Ultra Wideband dengan Coplanar Waveguide Feeding untuk Pengujian Electromagnetic Anchoic Chamber. Masters thesis, INSITITUT TEKNOLOGI SEPULUH NOPEMBER.
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Abstract
Antena ultra-wideband (UWB) memiliki peran penting dalam pengujian bahan penyerap di electromagnetic anechoic chamber. Faktor utama yang memengaruhi kinerja antena UWB adalah metode feeding dan konfigurasi patch dan ground. Sehingga penelitian ini bertujuan untuk merancang dan membuat antena mikrostrip UWB dengan pencatu CPW dan patch berbentuk elips. Desain dan simulasi dilakukan dengan metode Finite-Difference Time-Domain (FDTD). Spesifikasi antena mencakup nilai return loss ≤-10 dB dan bandwidth yang lebar pada rentang frekuensi 1-18 GHz. Spesifikasi tersebut dicapai melalui perhitungan dimensi antena dan feedline impedance serta optimasi bentuk patch dan ground. Antena difabrikasi menggunakan material FR-4 dengan ketebalan substrat 1,6 mm, ketebalan lapisan tembaga 0,035 mm, dan permitivitas relatif 4,3. Dalam penelitian ini, dirancang tiga jenis antena dengan variasi desain. Hasil karakterisasi menunjukkan bahwa ketiga antena memiliki bandwidth yang lebar. Antena Desain 1 memiliki rentang frekuensi kerja 1,62-14,61 GHz, Antena Desain 2 memiliki rentang frekuensi kerja 1,55-14,79 GHz, sedangkan Antena Desain 3 memiliki rentang frekuensi kerja 0,9-18 GHz.
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Ultra-wideband (UWB) antennas play an important role in testing electromagnetic wave-absorbing materials in an electromagnetic anechoic chamber. The main factors affecting the performance of the UWB antenna are the feeding method and the configuration of the patch and ground. Therefore, this research aims to design and fabricate a UWB microstrip antenna with a CPW feed and an elliptical patch. The design and simulation were carried out using the Finite- Difference Time-Domain (FDTD) method. The antenna specifications include a return loss value of -10 dB and a wide bandwidth in the frequency range of 1-18 GHz. The specifications were achieved through calculations of the antenna dimensions and feedline impedance, as well as optimization of the patch and ground shapes. The antenna is fabricated using FR-4 material with a substrate thickness of 1.6 mm, a copper layer thickness of 0.035 mm, and a relative permittivity of 4.3. In this study, three types of antennas with design variations were designed. The measurement results show that all three antennas have a wide bandwidth. Antenna Design 1 has a working frequency range of 1.62-14.61 GHz, Antenna Design 2 has a working frequency range of 1.55-14.79 GHz, while Antenna Design 3 has a working frequency range of 0.9-18 GHz
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Coplanar Waveguide, Elliptical Patch, Microstrip Antenna, Ultra Wideband |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC973.4.T76 Tropospheric radio waves Including absorption, propagation, etc. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis |
| Depositing User: | Tri Ratnasari |
| Date Deposited: | 05 Feb 2025 11:42 |
| Last Modified: | 05 Feb 2025 12:10 |
| URI: | http://repository.its.ac.id/id/eprint/118408 |
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