DocumentCode
2715697
Title
Dual-band Rat-Race Coupler with Bandwidth Enhancement
Author
Kong, C.P. ; Cheng, Kwok-Keung M.
Author_Institution
Dept. of Electron. Eng., Chinese Univ. of Hong Kong
fYear
2006
fDate
11-16 June 2006
Firstpage
1559
Lastpage
1562
Abstract
This paper presents the novel design of a dual-band rat-race coupler with enhanced bandwidth. This is accomplished by the insertion of two additional shunt stubs for bandwidth optimization. The proposed circuit features planar structure, low insertion loss and no via-hole required. For demonstration, the measured performance of a microstrip rat-race coupler operating at 2.45/5.8 GHz is shown. An improvement in bandwidth of 50-100% is achieved with line impedance ranging from 40-90 Omega
Keywords
UHF couplers; microstrip couplers; 2.45 to 5.8 GHz; 40 to 90 ohm; UHF couplers; bandwidth enhancement; line impedance; microstrip rat-race coupler; shunt stubs; Bandwidth; Circuit simulation; Coupling circuits; Design engineering; Dual band; Frequency; Impedance; Insertion loss; Microstrip; Wideband; couplers; dual-band; rat-race;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location
San Francisco, CA
ISSN
0149-645X
Print_ISBN
0-7803-9541-7
Electronic_ISBN
0149-645X
Type
conf
DOI
10.1109/MWSYM.2006.249612
Filename
4015234
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