DocumentCode
1359193
Title
Improvement of the design of 180° rat-race hybrid
Author
Piernas, B. ; Hayashi, H. ; Nishikawa, K. ; Nakagawa, T.
Author_Institution
NTT Network Innovation Labs., Kanagawa, Japan
Volume
36
Issue
12
fYear
2000
fDate
6/8/2000 12:00:00 AM
Firstpage
1035
Lastpage
1036
Abstract
An innovative and simple design for a 180° rat-race hybrid is proposed which has a substantially improved phase shift characteristic over a large bandwidth compared with that of a conventional rate-race hybrid. The proposed hybrid has been fabricated with a three-dimensional technology to benefit from a high level of integration. It exhibits a bandwidth of 31% from 28.8 to 39.4 GHz with -15 dB input and output matching, a coupling loss of 4.6 dB with a power dividing balance better than 1.1 dB, and a phase balance better than 2
Keywords
MIMIC; MMIC; microstrip couplers; microwave devices; millimetre wave couplers; 28.8 to 39.4 GHz; 3D MMIC technology; 4.6 dB; EHF; MIMIC; SHF; coupling loss; phase shift characteristic; rat-race hybrid; three-dimensional technology;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20000753
Filename
852185
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