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Equivalent circuit for birdcage resonators
Author(s) -
Harpen Michael D.
Publication year - 1993
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910290218
Subject(s) - resonator , equivalent circuit , electrical impedance , resonance (particle physics) , physics , generalization , rlc circuit , lossy compression , point (geometry) , acoustics , nuclear magnetic resonance , mathematics , capacitor , mathematical analysis , optoelectronics , atomic physics , quantum mechanics , voltage , statistics , geometry
We present an equivalent circuit analysis for both low pass and high pass birdcage resonators loaded with lossy samples. In a generalization of the method of Hoult and Lauterbur (J. Magn. Reson. 34, 425 (1979)), we also derive circuit component values by application of the laws of electrodynamics. Measured resonance spectra, quality factors, and feed point impedances in a test resonator are shown to be in agreement with those predicted by the proposed model.