Rusfa R, Pramana R, Bavitra B, Oktavia F, Alajuri MHS, Simannulang AM. Design, Fabrication, and Experimental Evaluation of a 435 MHz Helical Antenna for 433 MHz IoT Modules. Jurnal Elektronika dan Telekomunikasi. 2025;25(2):170-180. doi:10.55981/jet.813