Title :
Bandpass filter using open/shorted dualbehaviour resonators
Author :
Wenjie Feng ; Wenquan Che
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A novel bandpass filter with multiple transmission zeros using open/shorted dual-behaviour resonators (DBRs) is proposed. Three transmission zeros on both sides of the bandpass responses can be easily realised. Three additional transmission zeros without bandstop/lowpass networks are used to suppress the second harmonic. A bandpass filter prototype with 15 dB rejection level in the upper stopband from 1.1f0 to 2.72f0 (3 dB fractional bandwidth 7.3%) has been designed and fabricated.
Keywords :
band-pass filters; harmonics suppression; resonator filters; DBR; bandpass filter; bandstop-lowpass network; gain 15 dB; gain 3 dB; multiple transmission zero; open-shorted dual-behaviour resonator; second harmonic suppression;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.4106
