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公开(公告)号：US11214660B2
公开(公告)日：2022-01-04
申请号：US16486188
申请日：2018-02-19
发明人： Yuma Yoshida , Yuichi Shimayama , Yukio Nakamura , Shinji Tsuchikawa , Katsuhiko Nawate , Shintaro Hashimoto
摘要： The present invention relates to a prepreg including a fiber base material layer containing a fiber base material, a first resin layer formed on one surface of the fiber base material layer, and a second resin layer formed on the other surface of the fiber base material layer, wherein the first resin layer is a layer obtained through layer formation of a resin composition (I) containing, as a main component of resin components, an epoxy resin (A), and the second resin layer is a layer obtained through layer formation of a resin composition (II) containing, as a main component of resin components, an amine compound (B) having at least two primary amino groups in one molecule thereof and a maleimide compound (C) having at least two N-substituted maleimide groups in one molecule thereof; a laminated sheet obtained by using the prepreg; a printed wiring board; a coreless board; a semiconductor package; and a method of producing a coreless board.
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公开(公告)号：US09620865B2
公开(公告)日：2017-04-11
申请号：US13765119
申请日：2013-02-12
CPC分类号： H01Q21/0031 , H01Q3/24 , H01Q3/2658 , H01Q3/40 , H01Q3/46
摘要： Signals are maintained to be in phase at beam input ports of a Rotman lens antenna, and thus scanning at non-step antenna beam angles can be realized without increasing the number of input beams. The present invention provides an antenna beam scan module including: a Rotman lens that has plural beam ports and plural antenna ports; plural antenna elements; relative phase detectors that detect a relative phase difference between the signals input to the adjacent beam ports; phase shifters that offset the relative phase difference between the signals supplied to the adjacent beam ports on the basis of the relative phase difference detected by the relative phase detectors; and switches that select routes of the signals supplied to the beam ports through variable amplifiers, wherein the phase shifters are arranged on alternate routes through which the signals are supplied to the plural beam ports.
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公开(公告)号：US11286346B2
公开(公告)日：2022-03-29
申请号：US15543078
申请日：2016-01-13
发明人： Takao Tanigawa , Tetsuroh Irino , Yuusuke Kondou , Yuichi Shimayama , Etsuo Mizushima , Tomio Fukuda , Yuki Nagai , Hikari Murai
摘要： The present invention relates to a resin composition containing a compound having a maleimido group, a divalent group having at least two imido bonds and a saturated or unsaturated divalent hydrocarbon group.
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