Konpang, Jessada, Thaweewong Akkaralaertsest, Suttee Tubtongdee, Adisorn Sirikham, and Nattapong Intarawiset. 2023. “Design of a Triple-Band Microstrip Bandpass Filter With Wide Harmonic Suppression Based on Stepped-Impedance Resonators”. RMUTL Engineering Journal 8 (1):1-10. https://doi.org/10.14456/rmutlengj.2023.1.