Dual-/Tri-Wideband Bandpass Filter with High Selectivity and Adjustable Passband for 5G Mid-Band Mobile Communications

作者: Zhanyong Hou , Chengguo Liu , Bin Zhang , Rongguo Song , Zhipeng Wu

DOI: 10.3390/ELECTRONICS9020205

关键词: ResonatorPhysicsMobile telephonyData transmissionOptoelectronicsTransmission (telecommunications)Band-pass filterFilter (video)Electrical impedancePassband

摘要: The design and implementation of the filters for fifth-generation (5G) mobile communication systems are challengeable due to demands high integration, low-cost, high-speed data transmission. In this paper, a dual-wideband bandpass filter (BPF) tri-wideband BPF 5G communications proposed. consists two folded open-loop stepped-impedance resonators (FOLSIRs), is designed by placing pair uniform impedance resonator inside with little increase in physical size filter. By employing novel structural deformation resonator, FOLSIR achieved more compact structure, controllable transmission zero, an adjustable resonant frequency. measurement results show that working bands 1.98–2.28/3.27–3.66 GHz 2.035–2.305/3.31–3.71/4.54–5.18 GHz, respectively, which consistent full-wave EM simulation results. implemented have low loss, good out-of-band rejection, wide passbands covering sub-6 commonly used spectrum.

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