Ultra-Wideband (UWB) Microstrip Bandpass Filter with an Improved Wide Stopband
نویسندگان
چکیده
— In this paper, the ultra-wideband (UWB) bandpass filter (BPF) with a wide stopband is presented. The prototype of proposed UWB BPF is by bending the five short-circuited stubs and coupling the I/O feed lines. In order to have a wide stopband, an bandstop structure embedded in input/output (I/O) lines without degrading the passband performances is used. The measured results verified that by using embedded bandstop structure, the proposed BPF has a wide stopband with over 30 dB rejection from 11 to 20 GHz. The experiment results of the fabricated circuit agree well with the electromagnetic (EM) simulations. Key-words: wideband, UWB, bandpass filter, microstrip and spurious suppression
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