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An improved method of approaching impedance computation of probe fed ring resonator
Author(s) -
Mahajan Madhurika,
Chakravarty Tapas,
Khah Sunil Kumar
Publication year - 2007
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.22518
Subject(s) - resonator , electrical impedance , computation , microwave , resonance (particle physics) , ring (chemistry) , software , helical resonator , method of moments (probability theory) , mode (computer interface) , input impedance , electronic engineering , acoustics , physics , microwave cavity , impedance parameters , engineering , electrical engineering , computational physics , computer science , mathematics , algorithm , telecommunications , atomic physics , chemistry , statistics , organic chemistry , estimator , programming language , operating system
Abstract In this article a new method of computation of input impedance of a probe‐fed ring resonator is presented. The method utilizes both cavity model and circuit theory to accurately predict the impedance of a high Q‐dominant mode resonance. Apart from accurate, this method can be generalized to predict impedance of first few modes of a probe‐fed ring resonator to reasonable accuracy. The computed result is compared with previously published data for TM 12 mode and discrepancies observed are listed. The method is also used to compute impedance for first few modes. For dominant mode, the numerical results are compared with IE3D results, which is a commercially available software based on method of moments. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1681–1684, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22518