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公开(公告)号：JP2012175349A
公开(公告)日：2012-09-10
申请号：JP2011034692
申请日：2011-02-21
Applicant: Nec Corp , Nec Network Products Ltd , Necネットワークプロダクツ株式会社 , 日本電気株式会社
Inventor： KURAMOTO AKIO , HARADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a spiral antenna which is suitable for mass productivity.SOLUTION: A spiral antenna has a pair of belt like bodies 6, 7, and the pair of belt like bodies 6, 7 respectively have insulative belt like covers 20, 21 and belt like radiation elements 10, 11 sandwiched and fixed by inner peripheral surfaces of the covers 20, 21. The pair of belt like bodies 6, 7 are overlapped and spirally wound around.
Abstract translation: 要解决的问题：提供适合于批量生产率的螺旋天线。 解决方案：螺旋天线具有一对带状物体6,7，一对带状体6,7分别具有绝缘带状盖20,21和带状辐射元件10,11夹持和固定的辐射元件10,11。 盖子20,21的内周表面。一对带状体6,7重叠并螺旋卷绕。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2009296468A
公开(公告)日：2009-12-17
申请号：JP2008149900
申请日：2008-06-06
Inventor： TAMAOKI NAOYA , YAMAMOTO SHIO , HARADA TAKASHI , KURAMOTO AKIO , OKANO YOSHINOBU
Abstract: PROBLEM TO BE SOLVED: To provide the optimum antenna structure for a wearable antenna.
SOLUTION: In an antenna wherein an antenna plane consists of a conductive plane, the antenna plane consisting of a conductive plane can spread out and the antenna plane consisting of a conductive plane is formed with a main slit having an open end opened to part of an edge of the conductive plane and a short-circuited end short-circuited by the conductive plane and a sub-slit which cuts across the main slit. The sub-slit has folded-back portions in the end parts close to edges of the conductive plane. Since the antenna plane consisting of the conductive plane can spread out, when the antenna is worn, for example, on clothes, the antenna plane consisting of the conductive plane spreads out in conformity with the body shape of a wearer and functions as an antenna and moreover, the wearer of the antenna feels a better sense of comfort with the antenna.
COPYRIGHT: (C)2010,JPO&INPITAbstract translation: 要解决的问题：为可穿戴天线提供最佳天线结构。 解决方案：在天线中天线平面由导电平面组成的天线中，由导电平面构成的天线平面可以展开，由导电平面构成的天线平面形成有主开口， 导电平面的边缘的一部分和由导电平面短路的短路端和横切主狭缝的子狭缝。 子狭缝在靠近导电平面的边缘的端部中具有折回部分。 由于由导电平面组成的天线平面可以展开，例如在衣服上穿戴天线时，由导电平面组成的天线平面与佩戴者的身体形状相符，并且起天线的作用 此外，天线的穿戴者感觉到更好的天线感觉。 版权所有（C）2010，JPO＆INPIT
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73.发明专利
公开(公告)号：JP2003076741A
公开(公告)日：2003-03-14
申请号：JP2002146242
申请日：2002-05-21
Applicant: Nec Corp , Nec Informatec Systems Ltd , 日本電気株式会社 , 株式会社エヌイーシー情報システムズ
Inventor： SASAKI HIDEKI , YAGUCHI TAKAHIRO , WAKUI AKIRA , ETANI SEIJI , HARADA TAKASHI , KURIYAMA TOSHIHIDE
Abstract: PROBLEM TO BE SOLVED: To easily allow computing an amount of radiation of electromagnetic radiation caused by wiring of a printed circuit board and easily and precisely allow acquiring the amount of the radiation of the electromagnetic radiation from the whole of the circuit board without performance of an electromagnetic field simulation.
SOLUTION: In an apparatus for support of design of printed circuited circuit board, a computing means 16 for amount of DM (Differential Mode) radiation computes an amount of DM radiation of electromagnetic radiation caused by the wiring, a computing means 19 for amount of CM (Common Mode) radiation computes an amount of CM radiation caused by a grand plane corresponding to the wiring based on the rate of the amount of DM radiation and the amount of CM radiation (CM/DM) computed by a computing means 17 for rate of amount of DM and CM radiation. A computing means 20 for amount of MAJ (major amount of radiation) computes an amount of MAJ radiation representing a major amount of radiation of the whole of the electromagnetic radiation caused by the wiring based on the rate of amount of DM radiation and the amount of MAJ radiation (MAJ/DM) computed by a computing means 18 for rate of amount of DM and MAJ radiation.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了容易地计算由印刷电路板的布线引起的电磁辐射的辐射量，并且容易且精确地允许从整个电路板获取电磁辐射的辐射量，而不执行 电磁场模拟。 解决方案：在用于支持印刷电路板设计的装置中，用于DM（差分模式）辐射量的计算装置16计算由布线引起的电磁辐射的DM辐射量，CM的量的计算装置19 （共模）辐射基于DM辐射量的速率和由计算装置17计算的CM辐射量（CM / DM）来计算由对应于布线的大平面引起的CM辐射量，用于 DM和CM辐射量。 用于MAJ量（主要辐射量）的计算装置20基于DM辐射量的速率计算表示由布线引起的整个电磁辐射的主要辐射量的MAJ辐射量和 由计算装置18计算的用于DM和MAJ辐射量的速率的MAJ辐射（MAJ / DM）。
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公开(公告)号：JP2002041594A
公开(公告)日：2002-02-08
申请号：JP2001125013
申请日：2001-04-23
Applicant: NEC CORP
Inventor： SASAKI HIDEKI , HARADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To evaluate whether or not a printed circuit board, in which board a power supply voltage fluctuation is suppressed and unwanted electromagnetic wave radiation caused by the resonance of a power supply system circuit is prevented, has been designed during or after board layout preparation before board production. SOLUTION: The layout information of the entire board is fetched by an input device (S10), and only the layout information of the power supply system circuit is extracted by an extraction means (S11), preserved in the storage part of a storage device (S12), fetched by a conversion means and converted to electric circuit information (S13). By using this electric circuit information, the impedance characteristics of the power supply system circuit viewed from the power supply terminal connecting position of a certain designated active element are calculated (S14) and the result is displayed (S15).
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公开(公告)号：JP2002024312A
公开(公告)日：2002-01-25
申请号：JP2000211754
申请日：2000-07-12
Applicant: NEC CORP
Inventor： SASAKI HIDEKI , HARADA TAKASHI , KURIYAMA TOSHIHIDE
Abstract: PROBLEM TO BE SOLVED: To provide a device for supporting design of printed board, which is provided with a design function to suppress electromagnetic radiation in a common mode from the printed board. SOLUTION: The device for supporting design of the printed board, which uses an information processor, is provided with a means which obtains the length of each side of a ground plane in the printed board in accordance with layout information of the printed board, a means which obtains a frequency of which the length of an integral multiple of the halfwave is approximately equal to the length of each side and which is within a range of the control rage of unnecessary electromagnetic radiation, and a means which outputs and displays the value of this frequency.
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Patent Agency Ranking
公开(公告)号：JP2001024379A
公开(公告)日：2001-01-26
申请号：JP2000173050
申请日：2000-06-09
Applicant: NEC CORP , MIYAGI NIPPON DENKI KK
Inventor： HARADA TAKASHI , INOMATA MASAYUKI , HATAKEYAMA KENICHI , FUJIWARA NOBORU , MASUDA NORIO
IPC: H05K9/00
Abstract: PROBLEM TO BE SOLVED: To suppress electromagnetic waves from leaking from the opening of an enclosure, where cables or the like are penetrated. SOLUTION: At the opening of an enclosure 1, a structural body 10, that consists of two layers of a conductive layer 8 and a magnetic body layer 9 and has one or a plurality of openings 11, is provided. A space 7 is provided between the structural body 10 and the enclosure 1, so that cables or the like can be wound around the structure body 10. Also, since the conductive layer 8 is in improve conductive contact, it is at the same potential as that of the enclosure 1, the openings 11 provided at the conductive layer 8 practically become the opening of the enclosure 1.
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公开(公告)号：JPH11183537A
公开(公告)日：1999-07-09
申请号：JP35506697
申请日：1997-12-24
Applicant: NEC CORP
Inventor： SASAKI HIDEKI , HARADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To ensure sufficiently an excellent measurement precision by performing measurement, setting the shortest distance between the magnetic field sensor and a wiring pattern to a maximum allowable value or less shorter than the length of the wiring pattern sufficiently, and shorter than the wavelength of a signal as well. SOLUTION: The frequency band Fr of a waveform to be measured is determined by the frequency bands of an oscilloscope (a voltage measuring element) 4 and a magnetic field sensor 2, and on the basis of this a magnetic field measuring distance h1 is found by h1=3×10 /(Fr ×6). Next, a magnetic field measuring distance h2 is found by h2=L/2 from the length L of a pattern 8 to be measured. And the shorter one out of both magnetic field measuring distances h1, h2 is used as a distance h0 (a maximum allowable value) for measuring the waveform of a magnetic field, and the magnetic field sensor 2 is arranged at this distance h0 using an actuator 3. And from a magnetic field waveform measured a current waveform is found using an approximate expression. Consequently, it becomes possible to perform indirect measurement with a sufficiently excellent measurement precision, even when it is impossible to make a measuring distance from the wiring pattern 8 shorter because of mounted components.
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公开(公告)号：JPH10333604A
公开(公告)日：1998-12-18
申请号：JP13734797
申请日：1997-05-28
Applicant: NEC CORP
Inventor： SASAKI HIDEKI , NAKAJIMA KEIICHI , ARAI NOBUHIRO , HORI MASAHARU , HARADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a liquid crystal module driving device that can restrain unnecessary electromagnetic waves from a signal source for driving the liquid crystal module, and also than can easily change the connecting condition of the module gland and the signal-source glad. SOLUTION: Since a signal source 2 for driving a liquid crystal module 4 is housed in a conductive case made of a metal or the like, unnecessary electromagnetic waves from the signal source are restrained. The case is provided with a module fixing jig 3 for insertedly fixing the liquid crystal module 4, so that the gland electrode of the liquid crystal module 4 is easily and electrically connected to the gland electrode of the signal source 2. In the case where the respective electrodes of the glands are to be electrically separated from each other, it will do a nonconductive sheet is inserted. Thereby, the unnecessary electromagnetic wave characteristic taken the gland connection into consideration can be easily evaluated.
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公开(公告)号：JPH10242656A
公开(公告)日：1998-09-11
申请号：JP622498
申请日：1998-01-16
Applicant: NEC CORP
Inventor： SASAKI HIDEKI , HARADA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To obtain a printed circuit board in which a loop area formed of a signal pattern and of the route of its return current is reduced, and which prevents a restriction on the interconnection of the signal pattern, an increase in the number of components and an obstacle to a high-density mounting operation when the signal pattern crosses over the boundary between a plurality of power-supply regions. SOLUTION: Signal patterns 5 which keep an interval at the radius or higher of a clearance are arranged in a signal layer at a printed circuit board which comprises the signal layer, a power supply layer and a grounding layer. Two adjacent signal patterns are used as one set. Via holes 6a, 6b and 6c, 6d on the signal patterns inside the same set are arranged so as to be adjacent to such an extent that the signal patterns can be insulated. The via holes 6b, 6c in the signal patterns 5b, 5c in different sets are arranged at an interval which is longer than the sum of the diameter of the clearance and the width of one portion of the signal pattern. A clearance 7 is formed around every via hole. Thereby, the route of the return current of every signal pattern is ensured near the signal pattern, and an electromagnetic radiation which is caused by every signal pattern and by the route of its return current is suppressed.
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公开(公告)号：JPH09232014A
公开(公告)日：1997-09-05
申请号：JP6375696
申请日：1996-02-26
Applicant: NEC CORP
Inventor： HARADA TAKASHI
IPC: H01R13/652 , H01R13/719 , H05K1/02 , H05K1/18 , H05K9/00 , H01R9/09
Abstract: PROBLEM TO BE SOLVED: To restrain spurious electromagnetic wave radiation, by contacting one side pads to the other side pads, formed by electrically connecting a power source wiring layer and a ground wiring layer, on the surface to be contacted of a printed circuit board; in fitting a connector to the printed circuit board. SOLUTION: This connector is constituted of plural pins 3, a housing 4 for fixing these pins 3, a power source decoupling capacitor 5 embedded in the inside of the housing 4, power sources on both ends of the capacitor 5, and pads 6 for electrically connecting power sources on both the ends of the capacitor 5 and pads 8 provided on a printed circuit board 2. The pads 8 are connected with the power source wiring layer of the 2 and a ground wiring layer. The pins 3 are inserted into the connector fitting part of the board 2, to provide pin holes 7 for connecting a circuit wiring, and the pins 3 are insertedly engaged with the pin holes 7, to fix a connector 1 to the substrate 2. The pads 6, connected to the electrodes of the ends of the capacitor 5, and the pads 8, provided on the board 2, are formed at the position relation so as to contacted with each other when the connector 1 is fitted to the board 2.
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