Kamila, Nur, Bambang Setia Nugroho, and Budi Syihabuddin. “Perancangan Butler Matrix 4x4 Pada Frekuensi 1,27 GHz Untuk Aplikasi Synthetic Aperture Radar (SAR)”. ReTII (January 17, 2017). Accessed July 20, 2025. https://sandbox.itny.ac.id/index.php/ReTII/article/view/398.