Single notch band UWB BPF using square ring resonator

UWB BPF is demonstrated in the paper with single notch band for satellite communication having small size and less complex since no via or defected ground structure is used. The filter consist of square ring resonator between two interdigital structures with rectangular ring at both ports. The passband extends from 2.7 GHz to 10.6 GHz having insertion loss below 2 dB where as notch band has 10 dB rejection fractional bandwidth of 11.2% with attenuation of 19 dB centered at 8 GHz. The proposed filter is simulated in Agilent ADS.