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Patent Agency Ranking
公开(公告)号：US10985471B2
公开(公告)日：2021-04-20
申请号：US16198913
申请日：2018-11-23
Inventor： Ryosuke Shiozaki , Tomohiro Yui , Ken Takahashi , Yuichi Kashino , Kouji Suzuki , Noriaki Saito , Shigeki Nakamura
IPC: H01Q19/06 , G01S13/931 , G01S7/03 , H01Q1/32 , H01Q21/08 , H01Q15/08 , H01Q19/30 , H01Q1/42 , H01Q3/34 , H01Q9/04 , H01Q19/10 , H05K1/02 , H05K1/18 , H05K7/14 , G01S13/87 , G01S7/02
Abstract: A radar device includes: a housing that includes an aperture in a front direction as a transmitting direction of an electromagnetic wave; a circuit board disposed in the housing such that a board surface extends along the front direction; an antenna unit that includes antenna elements being arrayed along a direction intersecting the front direction in a region on a side in the front direction of the circuit board, and that transmits the electromagnetic wave to the outside of the housing through the aperture and receives a reflected wave of the electromagnetic wave; and a dielectric lens that is disposed in the aperture of the housing to extend along a direction in which the antenna elements are arrayed and that has a semi-cylindrical shape or a parabolic-cylindrical shape projecting in the front direction.
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2.发明授权公开(公告)号：US09654063B2
公开(公告)日：2017-05-16
申请号：US14885671
申请日：2015-10-16
Inventor： Yukio Okazaki , Masakatsu Maeda , Shigeki Nakamura , Akinori Daimo
CPC classification number: H03F3/193 , H03F1/0261 , H03F1/301 , H03F3/245 , H03F2200/18 , H03F2200/27 , H03F2200/451 , H03F2200/453 , H03F2200/541 , H03F2200/555
Abstract: A bias circuit comprises: a first circuit that comprises a first resistor and a decoupling capacitor; a bias voltage generation circuit that comprises a first transistor being connected to the first circuit; one or more switches; a first replica circuit comprising a second circuit and a second transistor, the second circuit comprising a second resistor and a capacitor, the second transistor being connected to the second circuit; a second replica circuit comprising a third transistor; a comparator that makes a comparison between a pseudo-bias voltage and a reference voltage; and a control circuit that controls the one or more switches on the basis of the comparison result to reduce the amount of the current flowing through the first transistor.
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公开(公告)号：US09525581B2
公开(公告)日：2016-12-20
申请号：US15018864
申请日：2016-02-08
Inventor： Noriaki Saito , Kenji Miyanaga , Shigeki Nakamura
CPC classification number: H04L27/362 , H04L27/206 , H04L27/3863
Abstract: In signal processing of the present disclosure, an abnormal correction value as a correction value for correcting a quadrature error that occurs in quadrature modulation is output in malfunction determining processing, and a normal correction value as the correction value is output in calibration processing. The presence or absence of malfunction in the signal processing is determined on the basis of the levels of carrier leak and image leak of the quadrature modulated signal.
Abstract translation: 在本公开的信号处理中，作为用于校正在正交调制中发生的正交误差的校正值的异常校正值在故障确定处理中输出，并且在校准处理中输出作为校正值的正常校正值。 基于正交调制信号的载波泄漏和图像泄漏的电平来确定信号处理中的故障的存在或不存在。
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公开(公告)号：US10804615B2
公开(公告)日：2020-10-13
申请号：US16198911
申请日：2018-11-23
Inventor： Ryosuke Shiozaki , Tomohiro Yui , Ken Takahashi , Yuichi Kashino , Kouji Suzuki , Noriaki Saito , Shigeki Nakamura
IPC: G01S7/03 , H01Q19/06 , G01S13/931 , H01Q1/32 , H01Q21/08 , H01Q15/08 , H01Q1/42 , H01Q3/34 , H01Q9/04 , H01Q19/10 , H05K1/02 , H05K1/18 , H05K7/14 , G01S7/02
Abstract: A radar device includes: a case having an opening at the front in a forward direction, which is a transmission direction of electromagnetic waves; a circuit board placed in the case, the circuit board having first and second circuit board parts, one component side of the first circuit board part facing in the forward direction, the component sides of the second circuit board part extending along the forward direction; a transmission antenna and reception antenna composed of a plurality of antenna elements placed into an array in a direction crossing the forward direction in an area, facing in the forward direction, on the circuit board; and a dielectric lens having a semi-cylindrical or parabolic cylindrical shape in the forward direction, the dielectric lens being placed in the opening in the case so as to extend along a direction in which the plurality of antenna elements are placed into an array.
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公开(公告)号：US09917660B2
公开(公告)日：2018-03-13
申请号：US15151372
申请日：2016-05-10
Inventor： Shigeki Nakamura , Noriaki Saito , Taiji Akizuki
CPC classification number: H04B17/13 , H03F1/02 , H03F3/195 , H03F3/24 , H03G3/3042 , H04B1/0475 , H04B2001/045
Abstract: A wireless communication device includes a baseband variable gain amplifier that amplifies a transmission baseband signal, a local variable gain amplifier that amplifies a local signal, a frequency-conversion circuit that mixes the amplified transmission baseband signal and the amplified local signal to carry out a frequency conversion into a transmission high-frequency signal, a first detector that detects a power of the transmission high-frequency signal, and a controller that controls at least one of a gain of the transmission baseband variable gain amplifier and a gain of the local variable gain amplifier on the basis of the detected power of the transmission high-frequency signal so that a power of the transmission high-frequency signal to be detected takes a predetermined value.
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