Fahmi, Arif (2019) Rancang Bangun Wideband Metamaterial Absorber Untuk Aplikasi Anechoic Chamber Pada Pita Frekuensi S - C. Masters thesis, Institut Teknologi Sepuluh November.
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Abstract
Teknologi metamaterial absorber telah banyak menarik perhatian para peneliti karena memiliki sifat yang unik dalam mengurangi interferensi gelombang elektromagnetik pada instrumentasi telekomunikasi. Di lingkungan Institut Teknologi Sepuluh November (ITS), pengujian parameter instrumentasi telekomunikasi baik berupa antena maupun perangkat telekomunikasi lainya umumnya dilakukan secara outdoor agar didapatkan ambient noise dan interferensi gelombang pantul yang seminimal mungkin. Tetapi, tempat terbuka yang ideal susah ditemui dan tidak selalu ada sehingga dibutuhkan tempat pengujian indoor (anechoic chamber) dengan karakteristik free-space loss condition yang dapat menyerap semua gelombang datang. Dalam penelitian ini dilakukan perancangan metamaterial absorber untuk aplikasi anechoic chamber. Teknologi metamaterial absorber digunakan karena memiliki beberapa kelebihan diantaranya low profile dan low cost. Pada proses perancangan desain metamaterial absorber penulis menggunakan dua metode berbeda yaitu split ring slot dan equivelent circuit – split ring resonators. Berdasarkan hasil simulasi menggunakan Software CST Microwave Studio diperoleh nilai rata - rata parameter S11 < -10 dB, frekuensi resonan 1 GHz – 10 GHz, dan rata – rata absorption rate sebesar > 90%. Puncak penyerapan sebesar 99.99% pada frekuensi 8.5 GHz. Dari hasil pengukuran diperoleh nilai rata – rata parameter S11 < -7 dB, frekuensi resonan 1 GHz – 10 GHz, dan rata-rata absorption rate sebesar > 80%. Puncak penyerapan sebesar 99% pada frekuensi 7.95 GHz. ==================================================================================
The metamaterial absorber technology has attracted the attention of many researchers because it has unique properties in reducing electromagnetic wave interference in telecommunications instrumentation. In the environment of the Ten November Institute of Technology (ITS), the testing of telecommunication instrumentation parameters in the form of antennas or other telecommunications devices is generally carried out outdoors to obtain minimum ambient noise and reflected wave interference. However, the ideal open space is difficult to find and does not always exist, so anechoic chamber is needed with the characteristics of free-space loss conditions that can absorb all incoming waves. In this study the design of metamaterial absorber was carried out for anechoic chamber applications. Metamaterial absorber technology is used because it has several advantages including low profile and low cost. In the process of designing the metamaterial absorber design the author uses two different methods, namely split ring slot and equivelent circuit - split ring resonators. Based on the simulation results using CST Microwave Studio Software, the average value of the S11 <-10 dB parameter is obtained, the resonant frequency is 1 GHz - 10 GHz, and the average absorption rate is> 90%. The absorption peak is 99.99% at 8.5 GHz frequency. From the measurement results, the average value of the parameters S11 <-7 dB is obtained, the resonant frequency is 1 GHz - 10 GHz, and the average absorption rate is> 80%. The absorption peak is 99% at 7.95 GHz.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTE 621.387 8 Fah r |
| Uncontrolled Keywords: | Anechoic Chamber, Absorption rate, Bandwidth, Equivalent Circuit - Split Ring Resonators, Metamaterial Absorber, Parameter S11 |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK452 Electric apparatus and materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electromagnetic Devices T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20101-(S2) Master Thesis |
| Depositing User: | ARIF FAHMI ARIF FAHMI |
| Date Deposited: | 20 May 2021 02:59 |
| Last Modified: | 06 Aug 2021 05:23 |
| URI: | http://repository.its.ac.id/id/eprint/60146 |
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