Title :
Wide Stopband Bandpass Filter Implemented With Spur Stepped Impedance Resonator and Substrate Integrated Coaxial Line Technology
Author :
Peng Chu ; Wei Hong ; Linlin Dai ; Hongjun Tang ; Zhangcheng Hao ; Jixin Chen ; Ke Wu
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
Abstract :
A novel wide stopband bandpass filter implemented with spur stepped impedance resonator (SSIR) and substrate integrated coaxial line (SICL) technology is proposed in this letter. SSIR possesses capabilities of both suppressing and staggering spurs without complicated fine-tuning, and SICL is very suitable for wide stopband applications. A prototype with compact size is fabricated, and the measured results exhibit extended stopband up to 8.76 f0 with a rejection better than 40 dB (except for a little 36.5 dB burr in 7.06 f0), or 9.36 f0 with rejection better than 30 dB.
Keywords :
band-pass filters; band-stop filters; coaxial cables; resonator filters; SICL technology; SSIR; spur stepped impedance resonator; spur suppression; substrate integrated coaxial line technology; wide stopband bandpass filter; Filtering theory; Harmonic analysis; Impedance; Integrated circuit modeling; Prototypes; Resonant frequency; Substrates; Bandpass filter (BPF); spur stepped impedance resonator (SSIR); substrate integrated coaxial line (SICL); wide stopband;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2295219
