MICROSRTIP LINE BANDPASS UWB FILTER USING MMR AND APERTURE AT GROUND

Parallel coupled band pass filter is proposed for UWB applications using MMR. For better performance defected ground is proposed. firstly designed a PCML band pass filter with MMR at the center frequency of 6.85GHz and after that introduced a rectangular aperture on ground plane for enhancing the filter performance. The proposed filter passband is from 5.1GHz to 8.5GHz for filter without defected ground and after defected ground it is enhanced f rom4.2 GHz to 9.9GHz. the proposed filter size is 52.2 mm.