Title:
ANTENNA DEVICE, RADIO WAVE SENSOR, AND BIBCOCK DEVICE HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2017/199479
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an antenna device, a radio wave sensor and a bibcock device having the same, the antenna device allowing the directivity of radio waves to be enhanced, while the antenna device being intended to have a reduced size. An antenna device (1) comprises an antenna unit (2) and a dielectric unit (3). The antenna unit (2) has two planar antennas (20). The dielectric unit (3) is opposed to the antenna unit (2). One of the planar antennas (20) is a transmission antenna (21) and the other of the planar antennas (20) is a reception antenna (22). The dielectric unit (3) has two dielectric parts (30) the cross-sectional areas of which become smaller as the distances of which relative to the respective opposed planar antennas (20) become longer. The dielectric unit (3) has a groove (33), formed between the two dielectric parts (30), on the opposite side to the antenna unit (2).
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Inventors:
SUWA ATSUSHI
YAMAMOTO YASUKO
IRIE KENICHI
YAMAMOTO YASUKO
IRIE KENICHI
Application Number:
PCT/JP2017/003771
Publication Date:
November 23, 2017
Filing Date:
February 02, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01Q15/08; G01S7/03; G01S13/56; H01Q1/22; H01Q13/08
Foreign References:
| JP2016044434A | 2016-04-04 | |||
| JP2000174543A | 2000-06-23 | |||
| JP2001503579A | 2001-03-13 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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