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A novel compact dual‐band filter based on quarter‐mode substrate integrated waveguide and complementary split‐ring resonator
Author(s) -
Wang Ke,
Tang Hongyan,
Wu Runmiao,
Yu Chao,
Zhang Jian,
Wang Xiaotong
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30131
Subject(s) - insertion loss , resonator , bandwidth (computing) , split ring resonator , multi band device , microwave , materials science , optoelectronics , passband , band pass filter , optics , filter (signal processing) , optical ring resonators , waveguide , electronic engineering , physics , telecommunications , engineering , electrical engineering , antenna (radio)
This article proposes a novel miniaturized dual‐band filter, which is implemented by combining quarter‐mode substrate integrated waveguide (QMSIW) and complementary split‐ring resonator (CSRR). The resonator consists of a QMSIW cavity and CSRR structure, which can miniaturize SIW filter by increasing electrical length of the CSRR. With the combination of two second‐order QMSIW filters of different size, two propagating passbands can be generated. Based on the proposed structure, a dual‐band prototype is designed, fabricated, and measured. The measured passbands are centered at 3.5 GHz with about 3.3% bandwidth and 5.7 GHz with about 6.4% bandwidth. The measured minimum insertion loss for lower and upper bands is 0.98dB and 0.81dB respectively. While the insertion loss for all passbands is better than 2dB. The propose dual‐band filter has good performance in insertion loss with compact size, which has a great potential in the application of communication systems . © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2704–2707, 2016