TY - JOUR
T1 - Fabrication of circulator with coplanar wave guide structure
AU - Oshiro, K.
AU - Mikami, H.
AU - Fujii, S.
AU - Tanaka, T.
AU - Fujimori, H.
AU - Matsuura, M.
AU - Yamamoto, S.
N1 - Funding Information:
This work was supported by the Ministry of Economy, Trade, and Industry. The authors would like to thank Emeritus Prof. M. Naoe, Tokyo Institute of Technology, and Prof. Y. Nakamura, Tohoku University, for their useful discussions and suggestions, Dr. K. Yamauchi, NEOMAX, Co., Ltd., for his encouragement, and Miss K. Shitamitsu, Yamaguchi University, for her assistance on design and analysis of the circulator.
PY - 2005/10
Y1 - 2005/10
N2 - A circulator with a coplanar wave-guide structure, whose external form is rectangular, was designed and analyzed by using a three-dimensional finite-element method. In this analysis, the nonreciprocal transmission characteristics with an insertion loss of 1.0 dB and an isolation of 33 dB appeared at around 7 GHz. The bandwidth defined as the band with isolation of over 20 dB was 50 MHz. A circulator was fabricated based on the design, and the transmission characteristic of the circulator was measured. The fabricated circulator showed an insertion loss of 4.9 dB and an isolation of 28 dB at around 8 GHz. The bandwidth at isolation over 20 dB was 70 MHz.
AB - A circulator with a coplanar wave-guide structure, whose external form is rectangular, was designed and analyzed by using a three-dimensional finite-element method. In this analysis, the nonreciprocal transmission characteristics with an insertion loss of 1.0 dB and an isolation of 33 dB appeared at around 7 GHz. The bandwidth defined as the band with isolation of over 20 dB was 50 MHz. A circulator was fabricated based on the design, and the transmission characteristic of the circulator was measured. The fabricated circulator showed an insertion loss of 4.9 dB and an isolation of 28 dB at around 8 GHz. The bandwidth at isolation over 20 dB was 70 MHz.
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U2 - 10.1109/TMAG.2005.854729
DO - 10.1109/TMAG.2005.854729
M3 - Article
AN - SCOPUS:27744577033
SN - 0018-9464
VL - 41
SP - 3550
EP - 3552
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 10
ER -