DocumentCode
2923639
Title
Wide stopband bandpass filter based on DGS slot structure
Author
Bin Xu ; Rui Li ; Yingzeng Yin ; Junhui Wang
Author_Institution
Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves Xidian Univ., Xi´an, China
fYear
2012
fDate
22-26 Oct. 2012
Firstpage
1227
Lastpage
1228
Abstract
A novel bandpass filter with excellent harmonic suppression performance based on dual-plane defected ground structure (DGS) is proposed. The DGS slot structure consists of two folded square loop slots and two J-shaped slots. Using this structure, the filter has a good selectivity and exhibits a wide upper stopband characteristic. The equivalent circuit is also presented in this letter. Measured results show that the filter centred at 1.575 GHz has a fractional bandwidth of about 9.2%. The attenuation is below 20 dB over a wide band from 2.2 to 20 GHz.
Keywords
band-pass filters; band-stop filters; defected ground structures; microwave filters; DGS slot structure; J-shaped slots; dual-plane defected ground structure; equivalent circuit; frequency 2.2 GHz to 20 GHz; harmonic suppression performance; wide stopband bandpass filter; Attenuation; Band pass filters; Couplings; Filtering theory; Harmonics suppression; Microstrip filters; Resonator filters;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas, Propagation & EM Theory (ISAPE), 2012 10th International Symposium on
Conference_Location
Xian
Print_ISBN
978-1-4673-1799-3
Type
conf
DOI
10.1109/ISAPE.2012.6409000
Filename
6409000
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