Susilawati, Helfy, dkk. “Impedance Matching Simulation for Microstrip Antenna on Frequency 3.4-3.7 GHz Using Double Stub”. TELKA - Telekomunikasi Elektronika Komputasi Dan Kontrol, vol. 6, no. 2, November 2020, hlm. 113-2, doi:10.15575/telka.v6n2.113-123.