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Fernandez R, Luthfi A, Yunus S, Astuti TF. Enhanced Quadrature Hybrid Coupler Design for 5G N1 Band Using Defected Ground Structures. JNTE [Internet]. 2025 Dec. 12 [cited 2026 Apr. 15];14(3):190-5. Available from: https://jnte.ft.unand.ac.id/index.php/jnte/article/view/1279