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公开(公告)号：AU2004244650A1
公开(公告)日：2005-07-14
申请号：AU2004244650
申请日：2004-12-24
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
Abstract: In an antenna, a first flat radiating element is placed longitudinally. A second flat radiating element is located opposite to the first flat radiating element. The first and the second radiating element are connected to each other at their lower end portions. A third flat radiating element is longitudinally located below the second flat radiating element. A central conductor of a coaxial cable is connected to the lower end portions of the first and the second flat radiating elements. An outer conductor of the coaxial cable is connected to an upper end portion of the third flat radiating element. The coaxial cable is located parallel to the third flat radiating element.
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公开(公告)号：CA2490668A1
公开(公告)日：2005-06-26
申请号：CA2490668
申请日：2004-12-22
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
IPC: H01Q1/22 , H01Q1/24 , H01Q1/36 , H01Q1/38 , H01Q3/00 , H01Q9/28 , H01Q9/40 , H01Q21/30 , H01Q9/04
Abstract: In an antenna, a first flat radiating element is placed longitudinally. A second flat radiating element is located opposite to the first flat radiatin g element. The first and the second radiating element are connected to each other at their lower end portions. A third flat radiating element is longitudinally located below the second flat radiating element. A central conductor of a coaxial cable is connected to the lower end portions of the first and the second flat radiating elements. An outer conductor of the coaxial cable is connecte d to an upper end portion of the third flat radiating element. The coaxial cable is located parallel to the third flat radiating element.
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公开(公告)号：CA2383835A1
公开(公告)日：2002-10-26
申请号：CA2383835
申请日：2002-04-24
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
Abstract: A cylindrical reflector having a through hole in conformity with the shape of an elemental portion is fitted to the elemental portion in a LAN antenna in which the elemental portion encloses a linear conductor therein and projects from a base table, and further, the reflector is turned to be set at a position at which the directivity is formed in a specific direction. A flat plate or a curved plate forming a reflecting surface of the reflector is arbitrarily set, thus forming a desired radiation pattern of a beam.
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公开(公告)号：AU726672B2
公开(公告)日：2000-11-16
申请号：AU1620797
申请日：1997-03-11
Applicant: NEC CORP
Inventor： KURAMOTO AKIO , TANABE KOSUKE
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公开(公告)号：AU6479198A
公开(公告)日：1998-11-12
申请号：AU6479198
申请日：1998-05-07
Applicant: NEC CORP
Inventor： KURAMOTO AKIO , TANABE KOSUKE
Abstract: A helical antenna comprising a cylindrical dielectric member 1, four spiral conductors 2a to 2d which are wound around the outer wall of the cylindrical dielectric member 1, four spiral conductors 3a to 3d which are attached to the inner wall of the cylindrical dielectric member 1, and power supply circuits 4, 5 for supplying high-frequency power to the spiral conductors 2a to 2d and the spiral conductors 3a to 3d respectively. That is, the spiral conductors serving as radiation elements are disposed at the outside and inside of the cylindrical dielectric member, and the outer and inner conductors are operated as independent helical antennas. These spiral conductors are connected to the power supply circuits for supplying the high-frequency power having desired amplitude and phase.
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Patent Agency Ranking
公开(公告)号：NO972453D0
公开(公告)日：1997-05-29
申请号：NO972453
申请日：1997-05-29
Applicant: NEC CORP
Inventor： KURAMOTO AKIO , TANABE KOSUKE
Abstract: A lens antenna is disclosed which comprises a conical horn and a lens attached to an aperture of the horn. The lens has a first planar surface at a first side which faces free space and a hyperboloid of revolution at a second side opposite the first side and is made of a dielectric material with relative permittivity ranging from 2 to 4. The lens is provided with a cylindrical portion which has a second planar surface parallel to the first planar surface and displaced from the first planar surface by a predetermined distance. The cylindrical portion being concentric with the lens.
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公开(公告)号：AU2007215840B2
公开(公告)日：2010-09-30
申请号：AU2007215840
申请日：2007-02-15
Applicant: NEC CORP , RENESAS ELECTRONICS CORP
Inventor： MOCHIZUKI TAKUJI , KURAMOTO AKIO
Abstract: A small-size wide-band antenna (103) includes a radiation element formed on a dielectric substrate (1) and a coaxial cable (2) as power supply unit for supplying dipole potential to the radiating element. The radiation element includes a ground potential unit to which ground potential is supplied via an external conductor (4) of the coaxial cable and an opposite-pole potential unit to which a potential forming a pair with the ground potential is supplied via a center conductor (3) of the coaxial cable. The ground potential unit includes a pair of conductors (13,14) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. The opposite-pole potential unit includes a pair of conductors (31,32) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. Each of the ground potential unit and opposite-pole potential unit has a power supply point at a tapered apex of the conductor (13,31). The small-size wide-band antenna (103) further includes a stub conductor (17) as an impedance matching unit for matching the impedance between the radiation element and power supply unit.
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公开(公告)号：DE602004010047T2
公开(公告)日：2008-09-18
申请号：DE602004010047
申请日：2004-12-22
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
Abstract: In an antenna, a first flat radiating element is placed longitudinally. A second flat radiating element is located opposite to the first flat radiating element. The first and the second radiating element are connected to each other at their lower end portions. A third flat radiating element is longitudinally located below the second flat radiating element. A central conductor of a coaxial cable is connected to the lower end portions of the first and the second flat radiating elements. An outer conductor of the coaxial cable is connected to an upper end portion of the third flat radiating element. The coaxial cable is located parallel to the third flat radiating element.
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公开(公告)号：AU2007215840A1
公开(公告)日：2007-08-23
申请号：AU2007215840
申请日：2007-02-15
Applicant: NEC CORP , NEC ELECTRONICS CORP
Inventor： MOCHIZUKI TAKUJI , KURAMOTO AKIO
Abstract: A small-size wide-band antenna (103) includes a radiation element formed on a dielectric substrate (1) and a coaxial cable (2) as power supply unit for supplying dipole potential to the radiating element. The radiation element includes a ground potential unit to which ground potential is supplied via an external conductor (4) of the coaxial cable and an opposite-pole potential unit to which a potential forming a pair with the ground potential is supplied via a center conductor (3) of the coaxial cable. The ground potential unit includes a pair of conductors (13,14) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. The opposite-pole potential unit includes a pair of conductors (31,32) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. Each of the ground potential unit and opposite-pole potential unit has a power supply point at a tapered apex of the conductor (13,31). The small-size wide-band antenna (103) further includes a stub conductor (17) as an impedance matching unit for matching the impedance between the radiation element and power supply unit.
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公开(公告)号：DE69728603D1
公开(公告)日：2004-05-19
申请号：DE69728603
申请日：1997-05-30
Applicant: NEC CORP
Inventor： KURAMOTO AKIO , TANABE KOSUKE
Abstract: A lens antenna is disclosed which comprises a conical horn and a lens attached to an aperture of the horn. The lens has a first planar surface at a first side which faces free space and a hyperboloid of revolution at a second side opposite the first side and is made of a dielectric material with relative permittivity ranging from 2 to 4. The lens is provided with a cylindrical portion which has a second planar surface parallel to the first planar surface and displaced from the first planar surface by a predetermined distance. The cylindrical portion being concentric with the lens.
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