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公开(公告)号：FI960905A
公开(公告)日：1996-02-27
申请号：FI960905
申请日：1996-02-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna assembly has a first helical antenna and a second rod antenna extending through inside said first antenna in the axis direction. When the antenna is retracted, the upper end of a conductive portion of the second antenna passes through the first antenna to be evacuated below the lower end, and when the antenna is extended, the lower end portion of the conductive portion of the second antenna is electrically connected to the upper end portion of the first antenna. Therefore, the length of the second antenna can be reduced as compared with a length defined based on wavelengths of used electromagnetic waves. Consequently, an antenna assembly which requires a smaller housing space can be obtained.
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公开(公告)号：DE68919323D1
公开(公告)日：1994-12-15
申请号：DE68919323
申请日：1989-09-29
Applicant: SONY CORP
Inventor： TORIYAMA ICHIRO
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公开(公告)号：DE69131660D1
公开(公告)日：1999-11-04
申请号：DE69131660
申请日：1991-07-24
Applicant: SONY CORP
Inventor： KURODA SHINICHI , TORIYAMA ICHIRO , ONO NOBORU , MARUYAMA KOJI
IPC: H01Q9/04
Abstract: A matching device (30) for antenna (10) in which the matching device (30) is interposed between an antenna (13) of narrow frequency band and a feeding line (36) so as to match the antenna (13) and the feeding line (36) over a wide band, wherein a high impedance line (33) of a first predetermined length (L33) provided at the antenna side and a low impedance line (34) of a second predetermined length (L34) provided at the feeding line side are connected in series, whereby the matching device can be made small in size and simple in construction.
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公开(公告)号：EP0716469A4
公开(公告)日：1997-03-19
申请号：EP95922768
申请日：1995-06-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna device is provided with a spiral first antenna and linear second antenna which slides in the first antenna in the axial direction. When this antenna device is housed, the upper end of the conductor portion of the second antenna is passed through the first antenna and placed apart from the lower end of the first antenna and, when the antenna device is pulled out, the lower end of the conductor portion of the second antenna is electrically connected to the upper end of the first antenna. Therefore, the length of the second antenna can be short in accordance with the wavelenght of electromagentic waves used. As a result, the housing space of the antenna device can be reduced further.
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公开(公告)号：DE69528340T2
公开(公告)日：2003-07-31
申请号：DE69528340
申请日：1995-06-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna assembly has a first helical antenna and a second rod antenna extending through inside said first antenna in the axis direction. When the antenna is retracted, the upper end of a conductive portion of the second antenna passes through the first antenna to be evacuated below the lower end, and when the antenna is extended, the lower end portion of the conductive portion of the second antenna is electrically connected to the upper end portion of the first antenna. Therefore, the length of the second antenna can be reduced as compared with a length defined based on wavelengths of used electromagnetic waves. Consequently, an antenna assembly which requires a smaller housing space can be obtained.
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Patent Agency Ranking
公开(公告)号：DE69218045T2
公开(公告)日：1997-06-19
申请号：DE69218045
申请日：1992-05-11
Applicant: SONY CORP
Inventor： KURODA SHINICHI , ONO NOBORU , TORIYAMA ICHIRO
Abstract: A planar antenna is comprised of a ground conductor, a dielectric layer laminated on the ground conductor, and a rectangular radiation element laminated on the dielectric layer on its surface opposing to the ground conductor, wherein a rectangular opening is concentrically formed through the radiation element so as to provide a ring radiation element and a feed point is disposed near a center of one side of the opening.
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公开(公告)号：FI960905A0
公开(公告)日：1996-02-27
申请号：FI960905
申请日：1996-02-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna assembly has a first helical antenna and a second rod antenna extending through inside said first antenna in the axis direction. When the antenna is retracted, the upper end of a conductive portion of the second antenna passes through the first antenna to be evacuated below the lower end, and when the antenna is extended, the lower end portion of the conductive portion of the second antenna is electrically connected to the upper end portion of the first antenna. Therefore, the length of the second antenna can be reduced as compared with a length defined based on wavelengths of used electromagnetic waves. Consequently, an antenna assembly which requires a smaller housing space can be obtained.
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公开(公告)号：AU8132191A
公开(公告)日：1992-02-06
申请号：AU8132191
申请日：1991-07-24
Applicant: SONY CORP
Inventor： KURODA SHINICHI , TORIYAMA ICHIRO , ONO NOBORU , MARUYAMA KOJI
Abstract: A matching device (30) for antenna (10) in which the matching device (30) is interposed between an antenna (13) of narrow frequency band and a feeding line (36) so as to match the antenna (13) and the feeding line (36) over a wide band, wherein a high impedance line (33) of a first predetermined length (L33) provided at the antenna side and a low impedance line (34) of a second predetermined length (L34) provided at the feeding line side are connected in series, whereby the matching device can be made small in size and simple in construction.
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公开(公告)号：DE69528340D1
公开(公告)日：2002-10-31
申请号：DE69528340
申请日：1995-06-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna assembly has a first helical antenna and a second rod antenna extending through inside said first antenna in the axis direction. When the antenna is retracted, the upper end of a conductive portion of the second antenna passes through the first antenna to be evacuated below the lower end, and when the antenna is extended, the lower end portion of the conductive portion of the second antenna is electrically connected to the upper end portion of the first antenna. Therefore, the length of the second antenna can be reduced as compared with a length defined based on wavelengths of used electromagnetic waves. Consequently, an antenna assembly which requires a smaller housing space can be obtained.
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公开(公告)号：AT225084T
公开(公告)日：2002-10-15
申请号：AT95922768
申请日：1995-06-27
Applicant: SONY CORP
Inventor： KANAYAMA YOSHIKI , TSUDA SHINICHIRO , KURODA SHINICHI , TORIYAMA ICHIRO , ITO HIROKI
Abstract: An antenna assembly has a first helical antenna and a second rod antenna extending through inside said first antenna in the axis direction. When the antenna is retracted, the upper end of a conductive portion of the second antenna passes through the first antenna to be evacuated below the lower end, and when the antenna is extended, the lower end portion of the conductive portion of the second antenna is electrically connected to the upper end portion of the first antenna. Therefore, the length of the second antenna can be reduced as compared with a length defined based on wavelengths of used electromagnetic waves. Consequently, an antenna assembly which requires a smaller housing space can be obtained.
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