Title :
Simple Ultra-wide Band Band-Pass Filters with Dual- and Quad-Notched Bands
Author :
Ping Cao ; Ting-Ting Gu
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A simple ultra-wideband (UWB) band pass filter (BPF) with dual-or quad-notched bands based on embedded open stubs and shunt short-circuited stubs structure is investigated. Single and double embedded open stubs are analyzed and employed to create the desired rejection bands. A broadside-coupled micro strip-coplanar waveguide (CPW) structure is adopted to build a simple UWB BPF prototype. Two identical shunt short-circuited stubs between the embedded stubs and UWB BPF are employed to improve the matching performance. The stub structure with little interference of each notched band, can be applied in UWB system to avoid several existing radio systems. Simulation and the design of the UWB BPFs with rejection bands according to FCC´s spectrum mask are presented. The dual- and quad-notched UWB BPFs are fabricated and measured to validate the feasibility of this design. Good agreements between the predicted and measured results are achieved.
Keywords :
band-pass filters; coplanar waveguides; coupled circuits; masks; microstrip filters; notch filters; CPW structure; FCC spectrum mask; UWB BPF prototype; broadside-coupled microstrip-coplanar waveguide structure; double embedded open stub structure; dual-notched band filter; interference; quadnotched band filter; radio system; shunt short-circuited stub structure; single embedded open stub structure; ultrawideband band-pass filter; Band-pass filters; Coplanar waveguides; Equivalent circuits; FCC; Microstrip filters; Resonator filters; Ultra wideband technology; Dual-notched; Quad-notched; UWB Filter; open stub; short-circuited stub;
Conference_Titel :
Wireless Communication and Sensor Network (WCSN), 2014 International Conference on
Print_ISBN :
978-1-4799-7090-2
DOI :
10.1109/WCSN.2014.71