Evaluation of Equivalent Circuit Analysis of Double-tuned RF Coils by Method of Moment
Zhu X, Jiang X
A generalized equivalent circuit model is presented for analysis of both single-tuned and double-tuned radio-frequency (RF) coils for Magnetic Resonance Imaging (MRI) systems. Based on the basic principle of ECM, a generalized equivalent circuit model with N1N2 meshes is proposed to describe RF coils with complicated configurations in more details, even including the ending modes in the model of birdcage coils. Experimental results show that compared with the numerical analysis by method of moment (MOM), the equivalent circuit method (ECM) appears to be acceptably accurate for the fields not exceeding 3 Tesla.