DocumentCode
2149958
Title
A novel heptagonal microstrip rat-race hybrid coupler with harmonic suppression and size reduction
Author
Song, Wei ; Deguchi, Hiroyuki ; Tsuji, Mikio
Author_Institution
Dept. of Electron., Doshisha Univ., Kyotanabe, Japan
fYear
2012
fDate
8-14 July 2012
Firstpage
1
Lastpage
2
Abstract
A novel heptagonal rat-race hybrid coupler (RRHC) working at the fundamental frequency of 0.9GHz is proposed here, which can realize both miniaturization and harmonic suppression. The novel RRHC based on T-shaped structure on top and spiral defected ground structure (DGS) at the bottom occupies only 31.3% area of a conventional RRHC. The measurement result of the fabricated RRHC shows good agreement with the simulation result and the spurious response is suppressed below 20 dB up to the fourth harmonic.
Keywords
defected ground structures; harmonics suppression; microstrip couplers; DGS; RRHC; T-shaped structure; frequency 0.9 GHz; harmonic suppression; heptagonal microstrip rat-race hybrid coupler; miniaturization; size reduction; spiral defected ground structure; Couplers; Harmonic analysis; Harmonics suppression; Microstrip; Microwave theory and techniques; Simulation; Spirals;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location
Chicago, IL
ISSN
1522-3965
Print_ISBN
978-1-4673-0461-0
Type
conf
DOI
10.1109/APS.2012.6348905
Filename
6348905
Link To Document