Desain Antena Monopole UHF untuk Uplink pada Satelit Iinusat-02
Submission Date: 2012-07-25 13:50:02
Accepted Date: 2012-09-11 00:00:00
Abstract
Pada generasi awal seperti sekarang ini Indonesia sedang dilakukan riset pembuatan payload satelit Iinusat-02. Dalam Penelitian ini dibahas mengenai salah satu bagian payload yaitu antena uplink yang beroperasi pada frekuensi UHF. Antena uplink untuk payload satelit Iinusat-02 ini menggunakan model monopole. Antena monopole tersebut terbuat dari stainless steel yang memiliki panjang 172 mm dan diameter 1 mm. Antena monopole yang dibutuhkan sebanyak dua buah dimana instalasi kedua antena monopole tersebut berada pada tengah sisi satelit Iinusat-02 yang saling tegak lurus. Sebelum fabrikasi, desain antena monopole disimulasikan pada software CST Studio 2011. Dari beberapa percobaan desain antena monopole pada software CST Studio 2011 diperoleh suatu desain antena yang memiliki performansi seperti yang diinginkan, yaitu memliki nilai retrun loss sebesar -18,64 dB, VSWR sebesar 1.26 pada frekuensi kerja 436,5 MHz, lebar bandwidth sekitar 78,2 MHz dan pola radiasi yang mendekati bentuk bola. Dari hasil pengukuran antena monopole hasil fabrikasi diperoleh nilai return loss dan VSWR sebesar -18,5 dB dan 1,31, lebar bandwidth sebesar 35 MHz dan pola radiasi yang diperoleh mendekati bola. Mengacu pada hasil simulasi dan pengujian, dapat disimpulkan disain antena ini bisa dijadikan refrensi untuk antenna uplink satelit Iinusat 02 yang tumbling selama mengorbit.
Keywords
antena monopole; Iinusat 02; simulasi; pengukuran
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