Design of Planar Bandpass Filter for Ultrawide Band Communication Systems
نویسنده
چکیده
A planar band pass filter topology is built using broadside coupled structure. The design is aimed at achieving pass band that covers the frequency range from 3.1GHz to 10.6 GHz. as required by modern Ultra Wide Band (UWB) indoor and outdoor communication systems . Multiple unlicensed users could share spectrum previously allocated to the users, including licensed users, on a non-interference basis .The filter is formed by attaching three pairs of circular impedance-stepped stubs in shunt to a high impedance microstrip line. We obtain a filter with upper pass band frequency (4.7GHz to 9.9GHz) of UWB having a uniform return loss. Attenuation in lower pass band is -30 db. The filter is successfully designed using Advanced Design System (ADS) software and measured results are presented in this work. Keywords-component; Bandpass filter (BPF), Ultra Wide Band (UWB) , planar filter
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