Institution of Engineering and Technology;Stevenage: Institution of Engineering and Technology (IET)
摘要:
摘要： This study presents compact wide-stopband microstrip bandpass filters, using stub-loaded stepped-impedance resonators. The resonators consist of three stepped-impedance sections. By adjusting the parameters of the resonators, one can control the frequencies of the resonant modes as well as the frequency of the transmission zero. When the transmission zero frequency is close to the spurious resonant mode frequencies, one can have a wide-stopband bandpass filter without external filtering circuits or increasing the resonator number for suppressing the spurious passbands. To validate the design concept, three dual-band bandpass filters and one wideband bandpass filter are designed, fabricated and tested. 出版者： Stevenage: Institution of Engineering and Technology (IET) 出版日期： 2012-10-23 出處： IET Microwaves, Antennas & Propagation, 2012-10, Vol.6 (13), p.1422-1428 版權： 2014 INIST-CNRS 版權： Copyright The Institution of Engineering & Technology Oct 2012 識別號： ISSN: 1751-8725 識別號： EISSN: 1751-8733 識別號： DOI: 10.1049/iet-map.2012.0257
