Title:
A millimeter wave dielectric lens antenna and the speed sensor using it
Document Type and Number:
Japanese Patent JP5941854
Kind Code:
B2
Abstract:
A speed sensor which aligns a normal direction of one patch antenna which is disposed on a mounted board, and an optical axis of a dielectric lens uses a frame for inclining a sensor module, in order to obtain a component cos θ in a traveling direction when the speed sensor is installed on a horizontally vertical surface of an automobile or a railway car. When beams are condensed by using the one patch antenna and the cannonball-shaped dielectric lens, the dielectric lens is inclined and a bottom surface portion of the lens is cut with a plane parallel with a surface of the antenna-mounted board. The one patch antenna is configured by one patch and a GND electrode and the gain center of radiation characteristics is a normal direction of the antenna board. However, the radiation characteristics have a substantially hemisphere surface wave shape.
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Inventors:
Hideyuki Nagaishi
Takashi Matsumura
Takashi Matsumura
Application Number:
JP2013025107A
Publication Date:
June 29, 2016
Filing Date:
February 13, 2013
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
H01Q15/08; H01Q1/42; H01Q19/09
Domestic Patent References:
| JP63224507A | ||||
| JP2007270459A | ||||
| JP10505429A |
Foreign References:
| US20120274525 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki
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