Moore Curve Fractal Shaped SRR as Miniaturized Stop Band Elements

A Moore Spiral Ring Resonator (MSRR) placed at back side of a CPW transmission line as a miniaturized band stop element with is presented in this work. The resonators are aligned underneath of the CPW slots to enhance the inductive coupling between line and resonators and a sharp and narrow band rejection is obtained. Further miniaturization can be achieved for higher order of Moore curve. The insertion loss at stop band is grater than 25 dB. The fractal curve studied here as miniaturized bandstop render useful application as feednetwork of bandrejection UWB antenna systems and coupling networks of UWB filters.