Sadao Yamashita
Murata Manufacturing
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Publication
Featured researches published by Sadao Yamashita.
IEEE Transactions on Microwave Theory and Techniques | 1993
Youhei Ishikawa; Sadao Yamashita; Seiji Hidaka
It is shown that, in a filter design system which introduces noise temperature into the active feedback resonator (AFR), the AFR band elimination filter (BEF) can be designed using techniques for the conventional passive BEF. In this system, the passive BEF circuit used for electrical design is also useful for the noise analysis of the AFR BEF. This analysis reveals that the noise figure (NF) value of the AFR BEF can be calculated from the noise temperatures of AFRs. The optimum NF value is obtained by minimizing these noise temperatures. The noise design of a three-pole AFR BEF is discussed. It is found that the observed NF of the three-pole AFR BEF agrees well with the theoretical values deduced from the designed S-parameters and the observed noise temperatures of the AFRs. >
Archive | 1994
Youhei Ishikawa; Sadao Yamashita; Hidekazu Wada
Archive | 1996
Yohei Ishikawa; Toshiro Hiratsuka; Kenichi Iio; Sadao Yamashita
Archive | 1997
Yohei Ishikawa; Toshiro Hiratsuka; Kenichi Iio; Sadao Yamashita
Archive | 1996
Yohei Ishikawa; Toru Tanizaki; Hiroshi Nishida; Sadao Yamashita; Atsushi Saitoh
Archive | 1997
Kenichi Iio; Koichi Sakamoto; Sadao Yamashita; Toshihiro Hiratsuka; Tomiya Sonoda; Shigeyuki Mikami
Archive | 1996
Yohei Ishikawa; Toshiro Hiratsuka; Sadao Yamashita; Kenichi Iio
Archive | 1998
Yohei Ishikawa; Koichi Sakamoto; Sadao Yamashita; Kenichi Iio
Archive | 1998
Yohei Ishikawa; Toru Tanizaki; Hiroshi Nishida; Sadao Yamashita; Atsushi Saitoh
Archive | 1997
Yohei Ishikawa; Toshiro Hiratsuka; Sadao Yamashita; Kenichi Iio
