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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: IEEE Trans Med Imaging. 2011 Aug 30;31(2):183–191. doi: 10.1109/TMI.2011.2166273

Fig. 2.

Fig. 2

Model established to calculate the resonance frequencies of 1st and 2nd harmonic in a microstrip resonator. The circuit in (a) can be changed into the symmetric structure along the central dashed line shown in (b). Applying short circuit and open circuit along the dashed line, respectively, the two resonance frequencies (1st and 2nd harmonic frequencies) can be calculated based on the simplified circuits shown in (c).