Title :
Design of Sharp Roll-Off Lowpass Filter With Ultra Wide Stopband
Author :
Karimi, G. ; Lalbakhsh, A. ; Siahkamari, Hesam
Author_Institution :
Dept. of Electr. Eng., Razi Univ., Kermanshah, Iran
Abstract :
A novel microstrip lowpass filter is proposed to achieve an ultra wide stopband with 12th harmonic suppression and extremely sharp skirt characteristics. The transition band is from 1.26 to 1.37 GHz with -3 and -20 dB, respectively. The operating mechanism of the filter is investigated based on proposed equivalent-circuit model, and the role of each section in creating null points is theoretically discussed. An overall good agreement between measured and simulated results is observed.
Keywords :
UHF filters; equivalent circuits; harmonics suppression; low-pass filters; microstrip filters; resonator filters; 12th harmonic suppression; UHF filters; equivalent circuit model; frequency 1.26 GHz to 1.37 GHz; microstrip lowpass filter; null points; sharp roll-off; ultrawide stopband; Micriostrip lowpass filter (LPF); sharp roll-off; ultra wide stopband;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2261057
