Wibowo, Rio Prakoso (2017) Perancangan Dan Pembuatan Antena Array dengan Beamwidth ≤5° pada Frekuensi S-Band dengan Menggunakan Elemen Microstrip Bow-tie. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam beberapa tahun terakhir, pengembangan sistem komunikasi membutuhkan perangkat antena yang ringan, harga terjangkau dan low profile yang mampu mempertahankan kinerja tinggi melalui spektrum frekuensi yang luas. Dengan menggunakan antena microstrip bowtie yang memiliki karakteristik ultra wideband bandwidth (UWB), maka kebutuhan sistem komunikasi akan tepenuhi. Antena ini dapat dirancang membentuk linear N-array sehingga mampu meningkatkan gain, mempersempit beamwidth dan dapat diaplikasi pada sistem radar yang bekerja pada frekuensi S-band di masa yang akan datang.
Untuk itu, dalam tugas akhir ini akan diusulkan desain antena microstrip bowtie menggunakan software CST Studio 2016 untuk perancangan dan MATLAB 2017a sebagai penunjang pengujian. Antena didesain membentuk antena microstrip linear N-array dan akan terus dimodifikasi hingga mendapatkan hasil yang optimal.
Berdasarkan hasil simulasi, untuk mendapatkan beamwidth ≤180° pada antena single element adalah antena yang memiliki ukuran dimensi panjang antena (a)= 61 mm, lebar antena (b)= 54 mm, panjang jalur 1 (pj1)= 27 mm, panjang jalur 2 (pj2)= 7 mm, lebar jalur 1 (lj1)=2.9 mm dan lebar jalur 2 (lj2)= 1.1 mm dan jarak reflektor sebesar lamda/4. Antena ini memiliki karakteristik lebar beamwidth sebesar 68,6°. Untuk mendapatkan beamwidth antena microstrip bowtie ≤5° dibutuhkan paling sedikit 16 element antena yang memiliki karakteristik frekuensi kerja di 3.01 GHz dan gain sebesar 20.3 dB. Namun, dalam proses fabrikasi hanya dibuat hingga 2 element karena keterbatasan alat ukur yang dimiliki.
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In recent years, the development of communication systems requires lightweight, low-cost and low-profile antenna devices capable of sustaining high performance over a wide frequency spectrum. By using a microstrip bowtie antenna that has ultra wideband bandwidth (UWB) characteristics, then the communication system needs will be satisfied. This antenna can be designed to form a linear N-array so as to increase gain, narrow the beamwidth and can be applied to radar systems working on future S-band frequencies.
Therefore, in this final project will be proposed microstrip bowti antenna design using CST Studio 2016 software for design and MATLAB 2017a as supporting test. The antenna is designed to form a N-array linear microstrip antenna and will continue to be modified to achieve optimal results.
Based on the simulation results, to obtain beamwidth ≤180° in single element antenna is an antenna that has dimensions of antenna length (a) = 64 mm, antenna width (b) = 51 mm, line length 1 (pj1) = 27 mm, line length 2 (pj2) = 7 mm, line width 1 (lj1) = 2.9 mm and line width 2 (lj2) = 1.1 mm and the reflector distance of lamda/4. This antenna has a wide beamwidth characteristic of 68,6°. To obtain the beamwidth of a microstrip bowtie ≤5 ° antenna, it needs at least 16 antenna elements that have working frequency characteristics at 3.01 GHz and a gain of 20.3 dB. However, in the fabrication process only made up to 2 elements because of the limitations of measuring tools owned.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Radar, Bowtie, Beamwidth, S-band |
| 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 Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Rio Prakoso Wibowo |
| Date Deposited: | 10 Aug 2017 01:40 |
| Last Modified: | 05 Mar 2019 04:39 |
| URI: | http://repository.its.ac.id/id/eprint/42911 |
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