Yahya, Salah I., and Abbas Rezaei. “Design and Fabrication of a Novel Ultra Compact Microstrip Diplexer Using Interdigital and Spiral Cells”. ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 9, no. 1 (June 30, 2021): 103-108. Accessed April 19, 2024. http://aro.koyauniversity.org/index.php/aro/article/view/819.