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High‐conductivity graphene‐assembled film‐based bandpass filter for 5G applications
Author(s) -
Bangqi Huang,
Li Siting,
Song Rongguo,
Hou Zhanyong,
Liu Chengguo,
He Daping
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22602
Subject(s) - band pass filter , materials science , resonator , conductivity , filter (signal processing) , wideband , wireless , center frequency , attenuation , electrical impedance , transmission (telecommunications) , optoelectronics , electronic engineering , computer science , physics , telecommunications , electrical engineering , engineering , optics , quantum mechanics
This article presents a compact 5G dual‐wideband bandpass filter (DBPF) based on high‐conductivity graphene assembled films (GAFs), which can meet the requirements of the sub‐6 GHz bands, high integration and high information transmission rate for 5G wireless communication. The GAF DBPF consists of two folded open‐loop stepped‐impedance resonators with a compact size of 21.9 mm × 22.5 mm × 0.53 mm. The measured results show that the presented GAF DBPF has two passbands with 3 dB fractional bandwidths of 15.95% and 12.72% at center frequencies of 2.14 and 3.5 GHz, respectively. In addition, the filter exhibits an attenuation level greater than 20 dB up to 7.52 GHz.