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公开(公告)号:US09742062B2
公开(公告)日:2017-08-22
申请号:US14299870
申请日:2014-06-09
Inventor: Ju Derk Park , Ho Yong Kang , Cheol Sig Pyo
CPC classification number: H01Q3/247 , H01Q1/48 , H01Q9/0407
Abstract: Provided is a small switchable directional control antenna that can perform direction control according to shapes and sizes of various devices. The antenna includes a dielectric layer, a radiation patch formed on a side of the dielectric layer, a ground plane formed on a side of the dielectric layer opposite to the side on which the radiation patch is formed and configured to have a plurality of slots formed at edges thereof, and a control module insulated from the ground plane and configured to control electrical connection between the radiation patch and the ground plane.
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公开(公告)号:US10309077B2
公开(公告)日:2019-06-04
申请号:US15361098
申请日:2016-11-25
Inventor: Eun Hee Kim , Ju Derk Park , In Hwan Lee , Ho Yong Kang , Jae Heum Lee
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.
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公开(公告)号:US10136424B2
公开(公告)日:2018-11-20
申请号:US14383019
申请日:2013-03-08
Inventor: Wun Cheol Jeong , Chang Sub Shin , Tae Joon Park , Ho Yong Kang , In Hwan Lee , Cheol Sig Pyo
Abstract: A method of configuring a multi-superframe is provided. The method includes setting at least one parameter for configuring the multi-superframe, and configuring the multi-superframe corresponding to the at least one parameter, wherein the at least one parameter includes a superframe order (SO), a beacon order (BO), and a multi-superframe order (MO), in a form of positive integers, and the setting includes setting the MO to have a value higher than the BO.
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公开(公告)号:US09219513B2
公开(公告)日:2015-12-22
申请号:US14086451
申请日:2013-11-21
Inventor: Ju Derk Park , Ho Yong Kang , In Hwan Lee , Cheo Sig Pyo
IPC: H04B1/3827 , H01Q1/24 , H01Q1/38
CPC classification number: H04B1/3827 , H01Q1/243 , H01Q1/38
Abstract: Disclosed is a wireless communication system. The wireless communication system includes an embedded-type antenna embedded in a base, and a wireless communication unit including a communication unit that is connected to the embedded-type antenna and exchanges information with an external device, and a housing that is arranged to surround the communication unit, wherein at least one of the communication unit and the housing performs transmission and reception of electric waves as a substitute of the embedded-type antenna.
Abstract translation: 公开了一种无线通信系统。 无线通信系统包括埋设在基座中的嵌入式天线,以及无线通信单元,其包括连接到嵌入式天线并与外部设备交换信息的通信单元,以及外壳, 通信单元,其中通信单元和外壳中的至少一个执行电波的发送和接收作为嵌入式天线的替代。
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公开(公告)号:US10333222B2
公开(公告)日:2019-06-25
申请号:US15484449
申请日:2017-04-11
Inventor: Eun Hee Kim , Ju Derk Park , In Hwan Lee , Ho Yong Kang , Jae Heum Lee
Abstract: Provided is a method of improving a bandwidth of an antenna using a transmission line stub to enable long-range communication together with broadband matching. According to the method, it is possible to combine a transmission line stub in series or parallel with a feeding point, which is an antenna signal input/output point of a body serving as an antenna, and apply the transmission line stub to an antenna for wide use.
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