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Accurate determination of Q factors of a quasi‐optical resonator
Author(s) -
Kapilevich B.,
Faingersh A.,
Gover A.
Publication year - 2003
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.10749
Subject(s) - resonator , microwave , coupling coefficient of resonators , reflection coefficient , attenuation , maser , optics , physics , coupling (piping) , resonance (particle physics) , reflection (computer programming) , waveguide , line (geometry) , nonlinear system , inductance , acoustics , electronic engineering , engineering , electrical engineering , computer science , atomic physics , mathematics , geometry , mechanical engineering , quantum mechanics , programming language , voltage
This paper presents a novel approach to measuring the Q factors of a quasi‐optical resonator used in a free electron maser (FEM) operating at 100 GHz. Estimation of the Q factors is based on measuring the reflection coefficient in the vicinity of resonance frequencies. The unknown parameters (attenuation constant and coupling inductance) are determined from the numerical solution of a nonlinear system of two equations. As an example, the Q factors of a quasi‐optical resonator, based on the shorted‐line waveguide section, have been determined using the proposed method. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 36: 303–306, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10749
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