DocumentCode
1354393
Title
DGS resonator with two transmission zeros and its application to lowpass filter design
Author
Chen, Qian ; Xu, Jie
Author_Institution
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Volume
46
Issue
21
fYear
2010
fDate
10/1/2010 12:00:00 AM
Firstpage
1447
Lastpage
1449
Abstract
A novel defected ground structure (DGS) with two transmission zeros and a sharp cutoff frequency response is proposed. Both the two transmission zeros generated by the new DGS are lower than the one generated by a dumbbell-shaped DGS etched the same square area dimensions. On the basis of the proposed DGS, a lowpass filter has been designed, fabricated and measured. The filter with 3 dB cutoff frequency at 4 GHz exhibits a very sharp cutoff frequency response and an ultra wide stopband with rejection better than 25 dB from 4.2 to 23 GHz. Measured results show good agreement with simulated ones.
Keywords
integrated circuit design; low-pass filters; resonator filters; DGS resonator; defected ground structure; frequency 4 GHz; lowpass filter design; sharp cutoff frequency response; two transmission zeros;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.2251
Filename
5604802
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