Novalia, Pertiwi (2017) Perancangan Antena Thinned Linear Array dengan Elemen Cavity Backed U-Slot Patch (CUP) Untuk Meminimalkan Jumlah Elemen dan Peak Sidelobe Level (PSLL). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan antena radar mengisyaratkan beam yang sempit dan Peak Side Lobe Level (PSLL) yang rendah sehingga dibutuhkan antena array. Namun, penggunaan banyak elemen pada array dapat menyebabkan konsumsi energi yang berlebihan dan cost produksi yang tinggi serta beban komputasinya menjadi lebih besar. Solusi untuk mengatasi masalah tersebut dengan mengurangi jumlah elemen array. Salah satu cara optimal untuk mengurangi jumlah elemen array adalah Thinning Techniques. Penelitian ini membahas thinning dengan algoritma genetika menggunakan aturan crossover baru yaitu Combined Top Five dan akan dibandingkan dengan aturan crossover yang sudah ada yaitu Paired Top Ten. Kedua metode ini akan dianalisa hasil minimisasinya (jumlah elemen, PSLL dan beamwidth) dan dibandingkan dengan tanpa GA (dense array).
Hasil minimisasi thinning dengan dengan elemen CUP mengindikasikan bahwa aturan Paired Top Ten lebih unggul dengan PSLL 0,85 dB lebih rendah dibandingkan Aturan Combined Top Five. Namun, dari jumlah pengisan elemen, aturan Combined Top Five lebih unggul 6,67 % dibandingkan Paired Top Ten. Kedua aturan crossover dibandingkan dengan dense array (tanpa thinning), menunjukkan hasil minimisasi yang lebih signifikan dengan pengurangan nilai PSLL sebesar 6,2 dB untuk aturan Paired Top Ten dan 5,35 dB untuk Combined Top Five. Sehingga dalam hal ini kedua aturan mempunyai keunggulan masing-masing dalam hal minimisasi jumlah elemen dan PSLL.
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Radar antennas need a narrow beam and a low Peak Side Lobe Level (PSLL) for which that the solution is an array antenna. However, Using many elements in the array causes excessive energy consumption, cost production, and computational costs. The solution for these problems is by reducing the number of array elements using thinning technique. This study discusses thinning with genetic algorithm using new crossover rule that is Combined Top Five which will be compared with existing crossover rule that is Paired Top Ten. Both methods will be adopted to obtain optimization results (number of elements, PSLL and beamwidth) to be compared with the one without GA (dense array).
The results of thinning optimization with CUP elements indicate that the Paired Top Ten rule produces a PSLL of 0.85 dB lower than the Combined Top Five Rule. However, the Combined Top Five rule is 6.67% superior to Paired Top Ten to minimize the number of elements. Similarly, when the two rules are compared with the dense array (without thinning), better result with 6.2 dB reduction in PSLL value for Paired Top Ten and 5.35 dB for Combined Top Five is obtained. Therefore, this case both rules have their respective advantages in terms of minimization of the number of elements and PSLL.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTE 621.382 54 Per p-1 |
| Uncontrolled Keywords: | Kata Kunci : Algoritma Genetika (GA), Cavity U-Slot Patch Antenna (CUP), Jumlah elemen, Peak Side Lobe Level (PSLL), Thinned Linear Array, Aturan Crossover. |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5105.546 Computer algorithms 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 > Industrial Engineering |
| Depositing User: | Novalia Novalia Pertiwi |
| Date Deposited: | 30 Oct 2017 01:43 |
| Last Modified: | 05 Mar 2019 02:44 |
| URI: | http://repository.its.ac.id/id/eprint/42153 |
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