metamaterial band-pass filter (MBPF) at the center frequency of f 0= 730 MHz is proposed,
based on the rectangular-shape 4-turn complementary spiral resonators (4-CSR). The
proposed MBPF consists of an interdigital capacitor as a series capacitance in the top layer,
leading to improve the stopband performance in the pass-band range of 700~ 760 MHz,
which makes it suitable for wireless power transfer (WPT) systems by rejecting unwanted …