Trisection Open-Loop Varacter-Based Tunable Filter for 5G Wireless Communications
Yasir I. A. Al‐Yasir · 2020
In this paper, a compact microstrip reconfigurable bandpass filter (BPF) covering the 3.4 to 3.8 GHz spectrum bandwidth for 5G wireless communications is proposed. The planar filter uses three ring resonators with 50 Ω transmission line impedances for input and output terminals. The coupling between