Title :
Wideband microstrip ring resonator bandpass filter with asymmetrically-loaded stubs
Author :
Sun, Sheng ; Zhu, Lei
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In this work, a multiple-resonance microstrip ring resonator with asymmetrically-loaded stubs has been proposed and investigated. Based on transmission line theory, a single multiple-resonance ring resonator with asymmetrically-loaded stubs is analyzed. Two extra transmission zeros have been observed and utilized to improve the stopband performance. Simulated results are well confirmed by the measurement and show the widened and deepened upper stopband, as well as a sharpened cut-off skirt.
Keywords :
band-pass filters; microstrip filters; microstrip resonators; resonator filters; asymmetrically-loaded stubs; multiple-resonance ring resonator; wideband microstrip ring resonator bandpass filter; Band pass filters; Couplings; Filtering theory; Microstrip filters; Microstrip resonators; Optical ring resonators; Passband; Resonance; Resonant frequency; Wideband;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4957934
