Studi Pengaruh Bahan Substrat Terhadap Kinerja Antena Mikrostrip Array Satcom Pada Frekuensi Ka-Band
DOI:
https://doi.org/10.57235/jetish.v5i2.9182Keywords:
Antena Mikrostrip, Rectangular Array, Ka-Band, Rogers RT5880, FR-4 EpoxyAbstract
Antena parabola konvensional pada pesawat menimbulkan hambatan aerodinamis. Sebagai solusi berprofil rendah, penelitian ini merancang antena mikrostrip rectangular array 4x8 (32 elemen) untuk penerima satelit Ka-Band (20 GHz) sekaligus menguji pengaruh bahan substrat terhadap kinerjanya. Simulasi dilakukan menggunakan CST Studio Suite 2022 dengan metode Rancang Bangun dan Eksperimental Kuantitatif, mencakup sintesis dimensi patch, teknik slot, dan corporate feed network. Hasilnya, substrat Rogers RT5880 terbukti optimal dengan pencapaian VSWR 1,27, Return Loss -18,56 dB, Bandwidth 258 MHz, dan Gain 16,48 dBi. Sebaliknya, kinerja FR-4 Epoxy anjlok dengan Gain hanya 4,535 dBi akibat tingginya loss tangent. Kesimpulannya, Rogers RT5880 jauh lebih layak dan unggul untuk diaplikasikan pada sistem komunikasi satelit Ka-Band dibandingkan FR-4.
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