Perancangan Bandpass Filter Pita Sempit pada Frekuensi L-Band untuk Aplikasi Synthetic Aperture Radar (SAR)

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Budi Syihabuddin Dwi Andi Nurmantris Agus Dwi Prasetyo

Abstract

Pada sistem Synthetic Aperture Radar (SAR), lebar pita menentukan resolusi yang diinginkan. Jika lebar pita sempit, maka resolusi yang didapatkan akan tinggi sehingga objek yang diamati akan lebih presisi. Untuk mendapatkan performa tersebut, dibutuhkan filter yang dapat menjaga lebar pita dari keluaran generator sinyal Chirp. Penelitian ini merancang filter dengan selektivitas tinggi pada frekuensi 1,27 GHz dengan lebar pita sebesar 10 MHz. Dengan karakteristik tersebut, perancangan filter dapat menggunakan resonator berbentuk kotak karena dapat menghasilkan lebar pita yang sempit. Dari hasil perancangan menggunakan duroid 5880 dengan permitivitas relative sebesar 2,2 didapatkan respon frekuensi pada 1,27 GHz dengan nilai S11 sebesar -36,25 dB dan nilai S21 sebesar -0,92 dB. Untuk lebar pita pada rentang frekuensi 1,265 �?�¢?? 1,275 GHz didapatkan nilai S11 dan S21 secara berurutan sebesar -14,37 dB dan -1,09 dB serta -14,43 dB dan -1,08 dB

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SYIHABUDDIN, Budi; NURMANTRIS, Dwi Andi; PRASETYO, Agus Dwi. Perancangan Bandpass Filter Pita Sempit pada Frekuensi L-Band untuk Aplikasi Synthetic Aperture Radar (SAR). JURNAL INFOTEL, [S.l.], v. 9, n. 2, p. 198-203, may 2017. ISSN 2460-0997. Available at: <http://ejournal.st3telkom.ac.id/index.php/infotel/article/view/230>. Date accessed: 19 oct. 2017. doi: https://doi.org/10.20895/infotel.v9i2.230.
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