A Miniature UWB Bandpass Filter Using Fractal Stepped Impedance Resonator

Abstract

A ultra-wideband (UWB) and ultra compact bandpass filter constructed by connecting two short stubs on a stepped-impedance split ring resonator(SISRR) was developed. On the basis of the analysis of the feedback, the bandwidth of the lower and upper changes the short stub can be independently controlled, load, the design and optimization of the simplification of the procedures. The simulated and measured results are in good agreement in the full operating frequency band from 2.2 GHz to 10.8 GHz.