Title :
Novel dual-mode bandpass filter using slot-line square loop resonator
Author :
Wu, Bian ; Su, Wen ; Sun, Shou-jia ; Liang, Chang-Hong
Author_Institution :
Sch. of Electron. Eng., Xidian Univ., Xi´´an, China
Abstract :
A novel dual-mode filter composed of slot-line square loop resonator (SSLR) loaded with four slot-line stubs and four slot patches is presented. Two types of slot patches are loaded in each corner to split the degenerate modes flexibly. Two T-shaped feed lines are arranged orthogonally to provide a large external coupling as well as source-load coupling. A compact dual-mode SSLR filter with two upper transmission zeros operating at 3.55 GHz with 3.7% fractional bandwidth is designed and fabricated.
Keywords :
band-pass filters; poles and zeros; resonator filters; slot lines; T-shaped feed lines; compact dual-mode SSLR filter; degenerate modes; dual-mode bandpass filter; frequency 3.55 GHz; slot patches; slot-line square loop resonator; slot-line stubs; source-load coupling; transmission zeros; Band pass filters; Couplings; Feeds; Filtering theory; Microstrip filters; Microwave filters; Resonator filters;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230056
