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Patent Searching and Data


Title:
ANTENNA DEVICE, ANTENNA SYSTEM, AND INSTRUMENTATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/102646
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce fluctuation in pass amplitude characteristics within a band, reduce fluctuation in return loss characteristics within the band due to total reflection, improve shielding performance, and achieve a good gain. The antenna device 1 is provided with: a waveguide body 5 comprising a closure member 30 and a coaxial waveguide transformation section 6 which has a hexahedron-shaped internal space 8 formed so as to penetrate between a first surface and a second surface and a connector attachment hole 22 for inserting a coaxial connector and for providing communication between the internal space and a third surface orthogonal to the first and second surfaces, the closure member 30 being for closing an opening on the second surface-side of the internal space; and a connector 50 comprising a connector body 51 attached to the connector attachment hole so as to orient outward from the internal space without an inner end part thereof protruding into the internal space, a center conductor 60 axially penetrating the center of the connector body with a tip part of the center conductor protruding into the internal space by a prescribed length from the inner end part of the connector body, and a passive radiator 54b composed of the tip part 60a of the center conductor and causing the protrusion length of the tip part to match a specific frequency band.

Inventors:
MORITA Osamu (3-16-1-601, Kamiasao, Asao-ku, Kawasaki-sh, Kanagawa 21, 〒2150021, JP)
SAEKI Akinori (3-16-1-601, Kamiasao, Asao-ku, Kawasaki-sh, Kanagawa 21, 〒2150021, JP)
OGURA Satoshi (3-16-1-601, Kamiasao, Asao-ku, Kawasaki-sh, Kanagawa 21, 〒2150021, JP)
Application Number:
JP2018/026712
Publication Date:
May 31, 2019
Filing Date:
July 17, 2018
Export Citation:
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Assignee:
MORITA TECH CO., LTD. (3-16-1-601, Kamiasao Asao-ku, Kawasaki-sh, Kanagawa 21, 〒2150021, JP)
International Classes:
H01Q13/02; G01R29/08; H01P1/17; H01P5/103; H01P11/00
Domestic Patent References:
WO2016016968A12016-02-04
Foreign References:
JPH0522016A1993-01-29
JPH11330845A1999-11-30
JPS53129563A1978-11-11
JPS647403U1989-01-17
JP2008282706A2008-11-20
JP2000049501A2000-02-18
JP2009085721A2009-04-23
Attorney, Agent or Firm:
SUZUKI Hitoshi (DSK Jouhou Center Bldg. 2nd Floor, 6-5 Arai 2-chome, Nakano-k, Tokyo 26, 〒1650026, JP)
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