Pradana, S. S., K. Koesmarijanto, and M. S. Suja’i. “Design and Fabrication of Circular and Circular Ring Microstrip Patch Antennas Employing Multilayer Parasitic Elements at 2.4 GHz”. JURNAL JARTEL: Jurnal Jaringan Telekomunikasi, vol. 15, no. 1, Mar. 2025, pp. 57-64, doi:10.33795/jartel.v15i1.6452.