Feng W, Hong M, Che W. Narrow-band Bandpass Filters with Improved Upper Stopband Using Open/Shorted Coupled Lines. ACES Journal [Internet]. 2021 Aug. 18 [cited 2024 Aug. 17];31(02):152-8. Available from: https://journals.riverpublishers.com/index.php/ACES/article/view/10233