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1. 发明专利

JP2003234615A SLOT ANTENNA AND RADIO LAN CARD 审中-公开
公开(公告)号：JP2003234615A
公开(公告)日：2003-08-22
申请号：JP2002030008
申请日：2002-02-06
申请人： NEC CORP
发明人： TANABE KOSUKE
IPC分类号： H01Q21/24 , H01Q1/22 , H01Q1/52 , H01Q13/10
摘要： PROBLEM TO BE SOLVED: To improve the rigidity of the entire card by integrating the circuit part and antenna part of a radio LAN card by a metallic case, to compact the card by equalizing a thickness of both parts and to constitute a slot antenna by a slot directly provided on a case surface. SOLUTION: A card outer shape is formed by covering the circuit part and the antenna part by an integrated metallic case, power is fed from a microstrip line provided on a printed board to the slot provided on the surface on the antenna part side of the case and the slot antenna is formed. Also, inside the case, the circuit part and the antenna part are separated by a block for radio interference prevention. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2001320230A DIELECTRIC LENS AND ITS PRODUCING METHOD 失效
公开(公告)号：JP2001320230A
公开(公告)日：2001-11-16
申请号：JP2000139473
申请日：2000-05-12
申请人： NEC CORP
发明人： TANABE KOSUKE
IPC分类号： G02B3/12 , H01Q15/08
摘要： PROBLEM TO BE SOLVED: To mass-produce a dielectric lens thick in thickness. SOLUTION: The dielectric lens 10A for microwave band is provided with a hollow lens container 10 having uniform thickness to be functioned as a matching layer and a dielectric 6 charged and sealed in the hollow lens container to be functioned as a lens for the microwave band.

3. 发明专利

JPH09238019A MICROSTRIP ANTENNA 失效
公开(公告)号：JPH09238019A
公开(公告)日：1997-09-09
申请号：JP4247696
申请日：1996-02-29
申请人： NEC CORP
发明人： TANABE KOSUKE
IPC分类号： H01Q13/08
摘要： PROBLEM TO BE SOLVED: To provide a microstrip antenna of a small size while cross polarization identification performance is obtained over a wide frequency band. SOLUTION: In the microstrip antenna in which a parasitic element 6 receives an electromagnetic wave emitted from a radiation element 2 fed from a feeding circuit 3 and the electromagnetic wave is emitted again therefrom, the radiation element 2 and the feeding circuit 3 are included in a plane of the parasitic element 6 to suppress electromagnetic wave radiation from the feeding circuit 3 to obtain a cross polarization wave identification performance over a wide frequency band. In the case of an array antenna composed of the plural numbers of the radiation elements 2 and the feeding circuits 3 and the parasitic elements 6, the feeding circuit 3 for the radiation element 2 arranged at the outside is arranged inside the array and the parasitic element 6 is placed biased in the inside of the array to reduce the outer size and to miniaturize the antenna.

4. 发明专利

JPH10284931A LENS ANTENNA 失效
公开(公告)号：JPH10284931A
公开(公告)日：1998-10-23
申请号：JP9082497
申请日：1997-04-09
申请人： NEC CORP
发明人： TANABE KOSUKE
IPC分类号： H01Q17/00 , H01Q13/02 , H01Q19/06 , H01Q19/08 , H01Q19/09
摘要： PROBLEM TO BE SOLVED: To provide a lens antenna with a high antenna efficiency, a low side lobe, ease of assembling and high productivity. SOLUTION: The lens antenna is made up of a 1st horn 11 made of a metallic conductor, a 2nd horn 12 made of a plastic material with a radio wave absorbing action, a lens 14 that controls a power distribution at the aperture of the horn 12, and screws 15, 16 that assemble the 1st horn 11, the 2nd horn 12 and the lens 14. Part of the microwave power received from a cylindrical waveguide of the 1st horn 11 is reflected in the surface of the lens 14 and most is absorbed in the 2nd horn 12. Since no radio wave absorbing body is adhered to the inner wall of a conical horn 10, there is no material to shield the microwave power and no effect is given onto the power density distribution at the aperture of the lens 14. Thus, the desired power density distribution is obtained.

5. 发明专利

JPH07202551A HELICAL ANTENNA 失效
公开(公告)号：JPH07202551A
公开(公告)日：1995-08-04
申请号：JP33480993
申请日：1993-12-28
申请人： NEC CORP
发明人： KURAMOTO AKIO , TANABE KOSUKE , OOMURO MUNEHIKO
IPC分类号： H01Q11/08
摘要： PURPOSE:To cover a wide area and to cover a specific area in a wide frequency range by providing plural pairs of helical conductors and longitudinally arranging them to feed them independently of one another. CONSTITUTION:A long coaxial cable 1 and a short coaxial cable 2 are adjacently arranged, and a pair of helical conductors 3 and 4 and a pair of helical conductors 5 and 6 are arranged around only the upper part of the coaxial cable and around lower parts of coaxial cables 1 and 2 respectively. Helical conductors 3 to 6 are held by dielectric supports 7 so that the pair of helical conductors 3 and 4 and the pair of helical conauctors 5 and 6 keep desired intervals and pitches. A U balun 8 is used to supply the power to pairs of helical conductors 3 and 4 and helical conductrors 5 and 6 from upper parts of coaxial cables 1 and 2. A feeding connector 10 and a connector 11 are connected by coaxial cables 1 and 2.

6. 发明专利

JPH0794935A PLANAR ANTENNA 失效
公开(公告)号：JPH0794935A
公开(公告)日：1995-04-07
申请号：JP23844593
申请日：1993-09-24
申请人： NEC CORP
发明人： KURAMOTO AKIO , TANABE KOSUKE
IPC分类号： H01Q13/08 , H01Q1/36
摘要： PURPOSE:To extend a frequency band with a low axial ratio and to expand a frequency band with high matching by preparing at least one radiation conductor plate provided with specific peripheral conductor plates arranged along the periphery of the radiation conductor plate. CONSTITUTION:This plane antenna has a feeding means consisting of dielectric 6, a microstrip line 7 and an earth conductor plate 4 provided with a slot 5 and a radiation conductor plate 1 arranged on the earth conductor plate 4 via air as insulating body to which high frequency power is fed from the feeding means. The plate 1 has a circular shape and is provided with two peripheral conductor plates 2 extended from mutual opposed positions on the periphery of the plate 1 by length L in the same peripheral direction along the peripheral edge of the plate 1. The length L is about 0.45 times of propagation wavelength. Since at least one radiation conductor plate 1 provided with two peripheral conductor plates 2 extended by length >0.4 propagation wavelength the peripheral edge of the plate 1 is prepared, a circularly polarized wave can be radiated.

7. 发明专利

JP2002124822A LENS ANTENNA DEVICE AND RADIO DEVICE 失效
公开(公告)号：JP2002124822A
公开(公告)日：2002-04-26
申请号：JP2000315657
申请日：2000-10-16
申请人： NEC CORP
发明人： TANABE KOSUKE
IPC分类号： H01Q15/08 , H01Q13/02
摘要： PROBLEM TO BE SOLVED: To provide a lens antenna device which is suitable for a compact radio device of high density mounted and a radio device where the lens antenna device is used. SOLUTION: A lens antenna device has a conical horn 2 cutting aslant an edge face 21 of a larger opening part of a cone and a dielectric lens 1 which refracts a radiation direction 7 of radio wave from the horn 2 parallel with a shortest side surface part 2a of the horn 2. According to this constitution, an open edge face 22 at a convergence side of the conical horn 2 can be transferred to an area near an upper surface of a device housing 5 and a space for a transmitter-receiver 4 can be formed in a lower part of the device housing 5. The edge face 21 is connected to a wave guide for the high frequency signal terminal of the transmitter-receiver 4 by means of a connection wave guide 3. The conical horn 2, the connection wave guide 3 and the transmitter-receiver 4 are generally stored inside the metallic device housing 5 and the lens 1 integrally and the entire constitutes a radio device.

8. 发明专利

JPH10308624A HELICAL ANTENNA 失效
公开(公告)号：JPH10308624A
公开(公告)日：1998-11-17
申请号：JP11846497
申请日：1997-05-08
申请人： NEC CORP
发明人： KURAMOTO AKIO , TANABE KOSUKE
IPC分类号： H01Q1/38 , H01Q11/08
摘要： PROBLEM TO BE SOLVED: To provide a small helical antenna having a large frequency band and with less frequency characteristic change in a radiation pattern. SOLUTION: An antenna is provided with one cylindrical dielectric 1, four spiral conductors 2a-2d wound to the outer wall of the cylindrical dielectric 1, four spiral conductors 3a-3d adhered to the inner wall of the cylindrical dielectric 1 and feeding circuits 4 and 5 for feeding high frequency power to the conductors 2a-2d on the outer wall of the cylindrical dielectric and the conductors 3a-3d at the inner wall of the cylindrical dielectric. Namely, the spiral conductors are arranged on the outer side and the inner side of the cylindrical dielectric as radiation elements and they are operated as independent helical antennas. The feeding circuits for feeding the high frequency power of desired amplitude/phase are connected to the spiral conductors.

9. 发明专利

JPH09246851A PATCH ANTENNA AND ITS MANUFACTURE 失效
公开(公告)号：JPH09246851A
公开(公告)日：1997-09-19
申请号：JP5271996
申请日：1996-03-11
申请人： NEC CORP
发明人： KURAMOTO AKIO , TANABE KOSUKE
IPC分类号： H01Q13/08 , B29C65/60 , H01Q1/40 , H01Q9/04
摘要： PROBLEM TO BE SOLVED: To support a parasitic patch antenna to a radome simply with high precision. SOLUTION: In this patch antenna, a microstrip structure radiation element 4 being a feeding path and a thin disk metallic patch 2A being a parasitic patch form a 2-layer electromagnetic radiation section. The metallic patch 2A is supported between an inner face 12 of a radome 1A and a support 11A of the radome 1A covering part of the face of the radiation element 4 in the vicinity of a boss hole 21. The support 11A is a forming of a boss 11a formed in advance to the inner face 12 of the radome 1A. The metallic patch 2A is inserted to the boss 11a, which is heated and formed to be the support 11A.

10. 发明专利

JPH07202552A HELICAL ANTENNA 失效
公开(公告)号：JPH07202552A
公开(公告)日：1995-08-04
申请号：JP33481093
申请日：1993-12-28
申请人： NEC CORP
发明人： TANABE KOSUKE , KURAMOTO AKIO , OOMURO MUNEHIKO
IPC分类号： H01Q11/08
摘要： PURPOSE:To extend the cover area by twisting the cap in the lower end of a helical antenna a desired number of times to direct the radiation pattern to an arbitrary direction. CONSTITUTION:A linear coaxial cable 3 is brought into contact with the outside of a dielectric cylinder 6 in parallel with the cylinder 6 by an adhesive or the like. A connector 10 is provided in the lower end part of the coaxial cable 3, and a balun 5 constituted by bending a coaxial cable having an electrically half-wave length like U is provided in the upper end part of the coaxial cable 3. The extension of the center conductor in the upper end part of the coaxial cable 3 is connected to one center conductor of the balun 5. Meanwhile, helical conductors 1 and 2 are coated with a soft dielectric coating 7 while keeping the interval between two lines fixed, and the pair of helical conductors 1 and 2 are twisted a desired number of times to form spirals. The extension of the center conductor of the balun 5 and that of the upper end part of helical conductors 1 and 2 are connected by feed lines 8 and 9.

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