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Antenna device

A technology of an antenna device and an opening, which is applied in the directions of an antenna grounding device, an antenna, an antenna support/installation device, etc.

Active Publication Date: 2020-01-07
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the antenna device with the above-mentioned structure has a poor FB ratio (Front to Back ratio) because the opening is provided on the substrate serving as the ground.

Method used

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Embodiment Construction

[0057] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0058] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0059]In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, methods, means, components and circuits well kno...

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PUM

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Abstract

The present invention discloses an antenna device capable of suppressing backward radiation of radio waves without hindering the transmission of light from an optical reading device or the like. The antenna device includes a ground plate, a plurality of radiating elements and conductive components. The ground plate is provided with an opening at a substantially central portion. The radiation elements of the plurality of radiation elements are arranged around the opening, respectively. The conductive member is disposed on the opening so as to be electrically connected to the ground plate, and does not prevent light from passing through the opening.

Description

[0001] This application claims that the Japanese application with the filing date of June 24, 2016 and the application number JP2016-125078 is the priority, and the content of the above application is cited, and the content of the priority is deemed to be fully described in this application. technical field [0002] Embodiments of the present invention relate to an antenna device. Background technique [0003] Currently, there is a system for product registration or inventory management using code symbols such as barcodes and two-dimensional codes attached to products. In this system, an optical reading device that optically reads the code symbols is used. [0004] On the other hand, in recent years, a system for commodity registration or inventory management using wireless tags attached to commodities has also been put into practical use. In this system, a wireless tag reader that reads information of wireless tags by wireless communication is used. [0005] In addition, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/22H01Q1/36H01Q1/48H01Q19/02
CPCG06K7/0004G06K7/10009G06K7/10356G06K7/10722H01Q1/2216H01Q1/48H01Q9/0421H01Q9/0464H01Q21/061G06K7/10316G06K7/1097H01Q7/00
Inventor 槌田直大石禎利柳沼順
Owner TOSHIBA TEC KK