Antenna equipment

JP7863365B2Active Publication Date: 2026-05-21TOHOKU UNIV
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TOHOKU UNIV
Filing Date
2022-12-26
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing antenna devices require multiple antenna elements to achieve omnidirectionality and high gain, leading to increased material costs.

Method used

A cylindrical antenna structure is employed, using a grounding member and a dielectric cover member to house antenna elements, reducing the number of elements needed while maintaining or improving gain and omnidirectionality.

Benefits of technology

The solution achieves improved gain and reduced material costs by utilizing fewer antenna elements, with the dielectric cover member being less expensive than traditional elements.

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Patent Text Reader

Abstract

[Problem] To provide an antenna device with which it is possible to improve gain with fewer antenna elements and possible to reduce material costs. [Solution] A grounding member 11 is formed from a columnar or cylindrical conductor, and is connected to a grounding potential. A cover member 12 is formed from a material including a dielectric, and has a cylindrical shape. The cover member 12 has the grounding member 11 inserted therein and is disposed so as to cover the outer surface of the grounding member 11 with a space between the grounding member 11 and the cover member 12. An antenna element 13 is disposed between the inner surface of the cover member 12 and the outer surface of the grounding member 11.
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