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Novel conflgurations of complementary split ring resonator (CSRR) with dual mesh-shaped couplings and defected ground structures (DGS) are introduced to design the high performance of wide pass-band and stop-band band pass fllters (BPF). This paper presents a low insertion loss (¡0:82dB), symmetry and sharper transmission zero level (¡51:88dB), using efiective DGS and alternative coupling for CSRR. The fllter with center frequency at 1.92 GHz, pass-band from 1.21GHz to 3.05GHz (BW = 95.8%) and wider stop-band (extended to 4.2f0 below ¡20dB rejection level) is designed and fabricated. Simulation and measured results including surface current distributions and frequency responses are presented and discussed.

COMPLEMENTARY SPLIT RING RESONATORS WITH DUAL MESH-SHAPED COUPLINGS AND DEFECTED GROUND STRUCTURES FOR WIDE PASS-BAND AND STOP-BAND BPF DESIGN