Title of article :
Sharp Roll-Off Ultra Wide Stopband Compact Microstrip Lowpass Filter Using Square-Shaped Resonator
Author/Authors :
Afzali ، Behnam Department of Electrical Engineering - Faculty of Technical and Vocational No.2 - Technical and Vocational University (TVU), Kermanshah Branch , Yousefi Moghadam ، Farshid Department of Electrical Engineering - Faculty of Technical and Vocational No.2 - Technical and Vocational University (TVU), Kermanshah Branch , Nadi ، Farshad Department of Electrical Engineering - Faculty of Technical and Vocational No.2 - Technical and Vocational University (TVU), Kermanshah Branch , Zallbeygi ، Rohallah Department of Electrical Engineering - Faculty of Technical and Vocational No.2 - Technical and Vocational University (TVU), Kermanshah Branch
Abstract :
In this paper, a novel compact microstrip Low-Pass Filter (LPF) with sharp roll-off and ultra-wide stopband with high suppression level is presented. In the proposed filter, square-shaped resonators are used. The cut-off frequency at 3dB is 1.88GHz. The maximum insertion loss of this filter is less than 0.1dB and the return loss is also less than 16dB in the passband. In the proposed structure, the stopband extends from 2.07 to 29.5 GHz at 24dB level of suppression and is considered as an ultra-wide stopband. There is a significant relationship between simulation and fabrication results, which have justified the functionality of the proposed LFP, respectively.
Keywords :
Cut , Off Frequency , Filter , LC Equivalent , Low , Pass , Microstrip , Resonator , Sharp Roll , Off , Square , Shaped , Transformation Function , Ultra , Wide Stopband
Journal title :
Majlesi Journal of Electrical Engineering
Journal title :
Majlesi Journal of Electrical Engineering
