Premium
Multimode ultra‐wideband filters by using a grounded open ring resonator
Author(s) -
Moradi Bahareh,
MartinezIranzo Ursula,
GarciaGarcia Joan
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.29959
Subject(s) - resonator , multi mode optical fiber , microwave , wideband , band pass filter , bandwidth (computing) , electronic engineering , parametric statistics , helical resonator , split ring resonator , coupling (piping) , engineering , optoelectronics , acoustics , electrical engineering , physics , telecommunications , optical fiber , mathematics , mechanical engineering , statistics
This paper reports a novel multimode resonator (MMR) ultra‐wide band‐pass (UWB) filter design using a grounded open ring resonator. The utilization of 30 μm gaps between input ports and the central resonator achieve high coupling level. Five resonant modes are used to perform a 128% fractional bandwidth at 4.3 GHz. The fabricated prototype exhibits a band‐pass with insertion losses around 0.5 dB. A theoretical model based on transmission lines matrices is proposed and used to explore the limits of the design through different parametric analysis. Excellent agreement between theoretical predictions, electromagnetic simulations and measurement are found. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2001–2004, 2016