Shallah AB, Zubir F, A. Rahim MK, Hamid MR, Vallappil AK, Majid HA, Yusoff Z, Basit A. A Compact Metamaterial Dual-band Branch-line Coupler for 5G Applications. Elektrika [Internet]. 2023 Aug. 28 [cited 2023 Dec. 2];22(2):30-6. Available from: https://elektrika.utm.my/index.php/ELEKTRIKA_Journal/article/view/448