DocumentCode :
1758253
Title :
Synthesis Design of Box-Section Bandpass Filter With Hybrid 
and Dual-Mode Resonators
Author :
Chuan Ge ; Xiao-Wei Zhu ; Wen-Cui Zhu ; Xin Jiang
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
Volume :
24
Issue :
12
fYear :
2014
fDate :
Dec. 2014
Firstpage :
836
Lastpage :
838
Abstract :
In this letter, a box-section bandpass filter consisting of hybrid λ/4 and dual-mode resonators at X-band is presented. Compared with the conventional even-odd mode method, the dual-mode resonator in the proposed filter is equivalent to separate λ/2 and λ resonators. A generalized synthesis approach is firstly proposed with extensive discussions on designing asynchronously tuned resonators. One prototype centered at 8.65 GHz, with 0.9 GHz passband is fabricated. Measured results of this filter demonstrate very high single-sided selectivity with 40 dB skirt slope steepness of 1.98 and minimum in-band insertion loss of 1.43 dB.
Keywords :
band-pass filters; microwave filters; microwave resonators; X-band; asynchronously tuned resonators; box-section bandpass filter; dual-mode resonators; frequency 0.9 GHz; frequency 8.65 GHz; hybrid λ/4 resonators; insertion loss; loss 1.43 dB; Admittance; Band-pass filters; Circuit synthesis; Microstrip resonators; Microwave filters; Passband; Resonant frequency; Bandpass filter (BPF); box section; high selectivity; hybrid resonators; synthesis design;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2014.2360431
Filename :
6914619
Link To Document :
