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 (JP)
SAEKI AKINORI (JP)
OGURA SATOSHI (JP)
SAEKI AKINORI (JP)
OGURA SATOSHI (JP)
Application Number:
PCT/JP2018/026712
Publication Date:
May 31, 2019
Filing Date:
July 17, 2018
Export Citation:
Assignee:
MORITA TECH CO LTD (JP)
International Classes:
H01Q13/02; G01R29/08; H01P1/17; H01P5/103; H01P11/00
Domestic Patent References:
| WO2016016968A1 | 2016-02-04 |
Foreign References:
| JPH0522016A | 1993-01-29 | |||
| JPH11330845A | 1999-11-30 | |||
| JPS53129563A | 1978-11-11 | |||
| JPS647403U | 1989-01-17 | |||
| JP2008282706A | 2008-11-20 | |||
| JP2000049501A | 2000-02-18 | |||
| JP2009085721A | 2009-04-23 | |||
| JP2006258762A | 2006-09-28 |
Other References:
See also references of EP 3691034A4
Attorney, Agent or Firm:
SUZUKI Hitoshi (JP)
Download PDF: