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公开(公告)号：AU2007202055B2
公开(公告)日：2011-06-09
申请号：AU2007202055
申请日：2007-05-08
Applicant: NEC CORP , RENESAS ELECTRONICS CORP
Inventor： KURAMOTO AKIO , MOCHIZUKI TAKUJI
Abstract: The present invention provides a small, thin, and cheap foldable broadband antenna that is valid in a wide band and, moreover, can be manufactured at low cost, and a method of using the same. A foldable broadband antenna includes: a plate conductor having a rectangular outer shape and in which a slit is formed from a long side so as be orthogonal to a longitudinal direction; a side conductor provided perpendicularly from a side parallel with the slit in the plate conductor; and a back conductor disposed in parallel with the plate conductor from an end of the side conductor toward the slit. In the plate conductor, a coaxial external conductor of a coaxial cable is connected to the side opposite to the side conductor with the slit therebetween, and a coaxial central conductor of the coaxial cable is electrically connected to the same side as that of the side conductor.
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公开(公告)号：CA2490668C
公开(公告)日：2009-02-03
申请号：CA2490668
申请日：2004-12-22
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
IPC: H01Q9/04 , H01Q1/22 , H01Q1/24 , H01Q1/36 , H01Q1/38 , H01Q3/00 , H01Q9/28 , H01Q9/40 , H01Q21/30
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：AU2004244650B2
公开(公告)日：2009-01-08
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：SG135101A1
公开(公告)日：2007-09-28
申请号：SG2007007313
申请日：2007-01-31
Applicant: NEC CORP
Inventor： KURAMOTO AKIO , TANABE KOSUKE , KANAI KAZUNAGA
Abstract: To suppress a loss in the operation due to electromagnetic coupling of a plurality of antenna elements which boot up reading/writing action of RFID tags that are attached to a large number of densely placed commodity media. A commodity managing antenna for booting up reading/writing action of RFID tags attached to commodity media that are densely stored on a shelf comprises: a plurality of loop-type antenna elements arranged in parallel at a constant interval on the shelf where the commodity media are densely stored; a first switch for selectively supplying electricity to one of the antenna elements; and a plurality of second switches inserted to each loop of the antenna elements which, when one of the antenna elements to which the electricity is supplied by the first switch is resonating, electrically disconnect the loops of remaining antenna elements so that those antenna elements become non-resonant.
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公开(公告)号：AU2007213080A1
公开(公告)日：2007-08-16
申请号：AU2007213080
申请日：2007-01-31
Applicant: NEC CORP , RENESAS ELECTRONICS CORP
Inventor： KURAMOTO AKIO , MOCHIZUKI TAKUJI
Abstract: An antenna device which is very compact, low in profile, wide in bandwidth, simple in configuration and inexpensive is provided. A plate type wideband antenna device according to the present invention is formed with a radiation element which is formed by bending a tapered conductor plate 11 into a rough squared U-shape, a conductor 12 which serves as a ground plate and a coaxial cable 1 which feeds power, and is configured by connecting the coaxial center conductor 2 of the coaxial cable to the tapered conductor 11 of a squared U-shape and connecting the coaxial external conductor 3 to the ground plate 12. By this, a very small antenna device whose entire size is 0.2 wavelengths long, 0.1 wavelengths wide and 0.1 wavelengths high relative to the frequency used is obtained.
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Patent Agency Ranking56.发明专利
公开(公告)号：CA2350317C
公开(公告)日：2007-05-29
申请号：CA2350317
申请日：2001-06-13
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
Abstract: In an antenna apparatus and the electronic toll collection (hereinafter, abbreviated to an ETC) system using it, an antenna apparatus (2) is provided in a space over a lane (3) through which an automobile (1) having ETC on-vehicle equipment (10) passes. An antenna which the antenna apparatus has radiates a radio wave having a radio beam emitted area (21) of a radio wave to communicate with the ETC on-vehicle equipment and, thereby, electronic toll collection is performed for the passing automobile. It is an object of the present invention to provide an antenna apparatus which is controllable so that the ETC on-vehicle equipment is in the center of the radio beam emitted area of the antenna apparatus, and also to provide an ETC system using it. The antenna apparatus integrates an antenna and a light emitting unit. The light emitting unit emits a visible light (31) to the radio beam emitted area for communicating with the ETC on-vehicle equipment 10 mounted on the automobile along the center line within the radio beam emitted area. A sensor (40) can detect the automobile and can determine an emitted period of the visible light.
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57.发明专利
公开(公告)号：AU783752B2
公开(公告)日：2005-12-01
申请号：AU5191101
申请日：2001-06-14
Applicant: NEC CORP
Inventor： KURAMOTO AKIO
Abstract: In an antenna apparatus and the electronic toll collection (hereinafter, abbreviated to an ETC) system using it, an antenna apparatus (2) is provided in a space over a lane (3) through which an automobile (1) having ETC on-vehicle equipment (10) passes. An antenna which the antenna apparatus has radiates a radio wave having a radio beam emitted area (21) of a radio wave to communicate with the ETC on-vehicle equipment and, thereby, electronic toll collection is performed for the passing automobile. It is an object of the present invention to provide an antenna apparatus which is controllable so that the ETC on-vehicle equipment is in the center of the radio beam emitted area of the antenna apparatus, and also to provide an ETC system using it. The antenna apparatus integrates an antenna and a light emitting unit. The light emitting unit emits a visible light (31) to the radio beam emitted area for communicating with the ETC on-vehicle equipment 10 mounted on the automobile along the center line within the radio beam emitted area. A sensor (40) can detect the automobile and can determine an emitted period of the visible light.
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公开(公告)号：AU783583B2
公开(公告)日：2005-11-10
申请号：AU3562802
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：CA2383835C
公开(公告)日：2005-09-20
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：DE69728603T2
公开(公告)日：2004-09-16
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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