An Enhanced Plane Wave Expansion Method to Solve Piezoelectric Phononic Crystal with Resonant Shunting Circuits

Table 2

Comparisons between PWE-PPC-C and other methods.

Models	Methods	LR band gaps	Bragg band gaps
One-dimensional PPC-C	Transfer Matrix method [7]	422.3–424.5 Hz	708–987 Hz
	PWE-PPC-C	422.3–424.2 Hz	708–986 Hz
Two-dimensional PPC-C	Finite Element method [22]	556–563 Hz	752–948 Hz
	PWE-PPC-C	559–566 Hz	754–949 Hz