Title :
A compact dual-band bandpass filter with adjustable second passband using S-shaped stepped impedance resonator embedded by open stubs
Author :
Ma, Xing-Bing ; Zheng, Hong-Xing
Author_Institution :
Inst. of Antenna & Microwave Tech., Tianjin Univ. of Technol. & Educ., Tianjin, China
Abstract :
A dual-band bandpass filter (BPF) is discussed in this paper. To obtain adjustable second passband, two same open stubs are embedded on S-Shaped stepped impedance resonator. By changing the length of two same stubs, the second resonant frequency can be adjusted significantly, In addition, filter with only one stub embedded has also been discussed, the differences between them has been analysed. Based on the proposed topology, a prototype was fabricated to achieve dual-band applications around 2.4 and 3.5 GHz. Experiment results demonstrate the newly designed filter available.
Keywords :
UHF filters; UHF resonators; band-pass filters; resonator filters; S-shaped stepped impedance resonator; adjustable second passband filter; compact dual-band bandpass filter; open stubs; second resonant frequency; Frequency measurement; Impedance; Q measurement; Resonant frequency; S-Shaped; bandpass filter; dual-band; open stubs;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037041
