Sahar Saleh, Widad Ismail, Intan S. Zainal Abidin and Moh’d H. Jamaluddin (2021) “Compact 5G Hairpin Bandpass Filter Using Non-Uniform Transmission Lines Theory”, Applied Computational Electromagnetics Society Journal (ACES), 36(2), pp. 126–131. Available at: https://journals.riverpublishers.com/index.php/ACES/article/view/7357 (Accessed: 22 April 2026).