Dual-band bandpass filter design using composite Right/Left-Handed materials

Based on composite Right/Left-Handed materials microwave transmission line, the characteristics and the physical implementation of the composite Right/Left-Handed of the transmission lineareanalsed and summarized. Bual-band microstrip filters which is widely used in wireless local area network (WLAN) IEEE 802 11 b / a (2.4/5. 8GH z) is designed. We change the structure so that it has a better filtering effection on the secondary resonant frequency, After 3D electromagnetic software simulation, Microwave band-pass filters is in line with the requirements of the design parameters with small size, and has better pass-band characteristics and filtering performance.