Wideband Multi-Port Network Integrated by 3-dB Branch-Line Couplers


  • Nor Azimah Mohd Shukor Wireless Communication Centre University Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Norhudah Seman Wireless Communication Centre University Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
  • Tharek Abd Rahman Wireless Communication Centre University Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia


Branch line coupler, defect ground structure, multi-port, stub impedance, wideband


The design of a multi-port network integrated by symmetrical alignment of four 3-dB branch-line couplers (BLCs) for wideband communication applications is presented. The BLC is designed with the implementation of stub impedance at each port’s transmission line and defect ground structure (DGS) underneath the shunt branches of BLC to improve bandwidth. The designs of the BLC and the multi-port network are performed by using CST Microwave Studio, a three-dimensional (3D) electromagnetic wave simulator. The designed wideband BLC and multi-port are fabricated, and their wideband performances of 2.3 to 5.3 GHz are verified.


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How to Cite

Nor Azimah Mohd Shukor, Norhudah Seman, & Tharek Abd Rahman. (2021). Wideband Multi-Port Network Integrated by 3-dB Branch-Line Couplers. The Applied Computational Electromagnetics Society Journal (ACES), 33(07), 764–771. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/9071