Triangular Patch Bandstop Filter for Wireless Communication Applications

A microstrip bandstop filter rejecting 3.7GHz frequency of AMD A4-6300 Dual-Core processor is presented. The proposed notch is obtained by introducing perturbations on an equilateral triangular resonator. The filter exhibits a notch of depth -26dB at 3.7 GHz, while the insertion loss is 0dB in the pass band. The effects of varying the parameters of the structure have been studied and an equivalent circuit model of the filter is developed. The proposed filter can be tuned to different notch frequencies, resulting in numerous applications in ubiquity networks in wireless communication.