A Design of Ultra-wideband Filter with Band-notched Characteristic Based on Left - Handed Materials
School of Electric and Information Engineering,Guangxi University of Science and Technology, 545006, Liuzhou, Guangxi, P. R. China
a Corresponding author: ZWB@gxut.edu.cn
Based on the concept of left-handed material (LHM), a novel ultra-wideband (UWB) planar filter with negative permittivity and permeability was designed and proposed in this paper. By etching a cross-coupled structure on the surface of substrate , the filter achieved a frequency pass band of 2.86 - 11.22 GHz, which meets requirement of the UWB applications. Moreover, a notch frequency band of 7.26 - 9.13 GHz also achieved simply by increasing the length of the left hand cross side structure. HFSS software was used to design and optimise the filter .The subtract of the filter is with a relative dielectric constant of 2.55 and the overall size of the filter is 7.6×16 × 0.8 mm3.
© Owned by the authors, published by EDP Sciences, 2016
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