The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2019
Filed:
Nov. 25, 2016
Electronics and Telecommunications Research Institute, Daejeon, KR;
Eun Hee Kim, Daejeon, KR;
Ju Derk Park, Daejeon, KR;
In Hwan Lee, Daejeon, KR;
Ho Yong Kang, Daejeon, KR;
Jae Heum Lee, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
Disclosed is a manhole type omnidirectional antenna having a relatively small angle between a main beam direction and the Earth's surface and exhibiting omnidirectional characteristics to allow long-range communication, wherein the manhole type omnidirectional antenna includes a manhole cover installed in a manhole in the Earth's surface; a main body installed in a cavity of an upper surface of the manhole cover and configured to convert an electrical signal into an electromagnetic wave to wirelessly communicate with a gateway separated from the manhole cover; and a radome inserted into the cavity to cover the main body.