As one of the most important devices in the ultra-wideband (UWB) wireless communication system, UWB filter has received more and more attention with the rapid development of UWB wireless communication technology. In this paper, an ultra-wideband bandpass filter based on composite right/left handed transmission line (CRLH TL) is designed. The filter are simulated and optimized by the industry-standard simulation tool HFSS to examine the correctness and effectiveness of the design with the simulated scattering parameters S11 and S21.
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