公开(公告)号：US20080074339A1

公开(公告)日：2008-03-27

申请号：US11622847

申请日：2007-01-12

申请人： Seung-Chul Lee ,  Jae-Sun Jin ,  Myung-Kuk Kim

发明人： Seung-Chul Lee ,  Jae-Sun Jin ,  Myung-Kuk Kim

IPC分类号： H01Q9/26

CPC分类号： H01Q9/26 ,  H01Q21/24 ,  H01Q21/26

摘要： The present invention relates to a bent folded dipole antenna for reducing a beam width difference, which can reduce a beam width difference, varying with a frequency band, and generate dual polarization through the use of an antenna structure having a bent folded dipole antenna unit, in which a plurality of bent folded dipole components is connected to each other as a single pattern, and a feeding unit for feeding a signal to the folded dipole antenna unit.Therefore, the present invention is advantageous in that it can reduce a beam width difference varying with a frequency band, simplify the structure of the antenna to reduce the cost thereof, and easily obtain dual polarization characteristics and wide band characteristics by combining a feeding unit for feeding a signal in a dual feeding manner with the bent folded dipole antenna unit implemented as a single pattern. In addition, the present invention is advantageous in that current flowing into the feed point of the feeding unit is induced only in folded dipole components without flowing into another feed point, thus realizing excellent isolation characteristics.

摘要翻译： 本发明涉及一种用于减小波束宽度差的弯曲折叠偶极子天线，其可以减小随频带变化的波束宽度差，并且通过使用具有弯曲折叠偶极天线单元的天线结构产生双极化， 其中多个弯曲的折叠偶极组件作为单个图案彼此连接，以及用于将信号馈送到折叠偶极子天线单元的馈送单元。 因此，本发明的优点在于，可以减小随频带变化的波束宽度差，简化天线的结构以降低其成本，并且通过组合馈送单元可以容易地获得双极化特性和宽带特性 以双重馈电方式馈送信号，其中弯曲的折叠偶极子天线单元被实现为单一图案。 此外，本发明的优点在于，流入馈送单元的馈电点的电流仅在折叠偶极子部件中被感应而不流入另一馈电点，从而实现优异的隔离特性。

公开(公告)号：US07212585B2

公开(公告)日：2007-05-01

申请号：US10734574

申请日：2003-12-12

申请人： Min-Hyung Cho ,  Seung-Chul Lee ,  Mun-Yang Park

发明人： Min-Hyung Cho ,  Seung-Chul Lee ,  Mun-Yang Park

IPC分类号： H04L27/04 ,  H04L27/20 ,  H04B17/00

CPC分类号： H04L27/365 ,  H03C3/40

摘要： There is provided a quadrature modulation transmitter which is capable of solving several problems of the conventional transmitter while performing the same function as the heterodyne transmitter or the digital IF transmitter, in which a circuit structure is simplified and a power consumption is reduced compared with the conventional transmitter. The quadrature modulation transmitter includes: a digital processing block for receiving an I-channel data, a Q-channel data and a clock signal, modulating the I-channel data or an inverted I-channel data into a first analog signal by means of an I-channel DAC according to a switching of an I-clock signal identical to the clock signal, and modulating the Q-channel data and an inverted Q-channel data into a second analog signal by means of a Q-channel DAC according to a switching of a Q-clock signal, the Q-clock signal being an inverted clock signal; and an analog processing block for receiving the first and second analog signals from the digital processing block, adding the first and second analog signals, converting the added signal into an RF domain signal through a mixing operation, and amplifying and transmitting the RF domain signal.

摘要翻译： 提供了一种正交调制发射机，其能够解决传统发射机的几个问题，同时执行与外差发射机或数字IF发射机相同的功能，其中电路结构被简化并且功耗相比于常规发射机 发射机。 正交调制发射机包括：数字处理块，用于接收I信道数据，Q信道数据和时钟信号，通过以下方式将I信道数据或反相I信道数据调制成第一模拟信号 I沟道DAC根据与时钟信号相同的I时钟信号的切换，并且通过根据下述的Q信道DAC将Q通道数据和反相Q通道数据调制成第二模拟信号 Q时钟信号的切换，Q时钟信号是反相时钟信号; 以及模拟处理块，用于从数字处理块接收第一和第二模拟信号，添加第一和第二模拟信号，通过混合操作将相加的信号转换成RF域信号，以及放大和发射RF域信号。

公开(公告)号：US20060135227A1

公开(公告)日：2006-06-22

申请号：US11261892

申请日：2005-10-28

申请人： Yu-Chul Chang ,  Jong-Chul Shin ,  Seung-Chul Lee

发明人： Yu-Chul Chang ,  Jong-Chul Shin ,  Seung-Chul Lee

IPC分类号： H04M1/00

CPC分类号： H04M1/0237 ,  H04M1/0216 ,  H04M2250/16

摘要： Disclosed herein is a sliding/folding combination type portable digital communication apparatus that includes a body; a sliding folder having a first position in which it is constrained on the body, a second position in which it has slid a predetermined distance while continuously facing the body, and a third position in which it has rotated away from the body after the sliding in such a manner that it does not face the body; and a sliding hinge module positioned between the body and the sliding folder to travel together with the sliding folder and provide a force necessary for folding/unfolding the sliding folder. The user can conveniently use a single communication apparatus having the advantages of both sliding-type and folding-type apparatuses.

摘要翻译： 本文公开了一种滑动/折叠组合型便携式数字通信装置，其包括主体; 具有第一位置的滑动夹具，其被限制在所述主体上;第二位置，其在所述第二位置中在连续面向所述主体的同时已经滑动预定距离;以及第三位置，在所述第三位置中，所述第二位置在滑动之后已经远离所述身体旋转 这样一种不会面对身体的方式; 以及定位在主体和滑动夹具之间的滑动铰链模块，以与滑动夹具一起移动并提供折叠/展开滑动夹具所需的力。 用户可以方便地使用具有滑动型和折叠型装置两者的优点的单个通信装置。

公开(公告)号：US20050216277A1

公开(公告)日：2005-09-29

申请号：US10514058

申请日：2003-04-30

申请人： Seung-Chul Lee

发明人： Seung-Chul Lee

IPC分类号： G09B29/00 ,  G06F17/30 ,  G06Q30/00 ,  G06Q99/00 ,  G06F17/60

CPC分类号： G06F16/50

摘要： Disclosed is a map information system including a server for providing map information expressing topography and buildings, and terminals connected to the server through network for receiving the map information, wherein the server includes a map information storing unit for storing identification codes endowed subsequently to certain partitions of the map at each enlargement stage, an extracting module for extracting corresponding map information when inputting the identification code to the server, and a transmitter for transmitting the extracted map information to the terminal, which also has a receiver for receiving the map information. Also disclosed is a method for producing the system, which includes: preparing a topographical map image; dividing the map image into several partitions and endowing serial numbers to the partitions for endowing the partitions with identification codes subsequently according to the enlargement stages; and dividing/storing each division of the map image.

摘要翻译： 公开了一种地图信息系统，包括用于提供表示地形和建筑物的地图信息的服务器，以及通过网络连接到服务器的接收地图信息的终端，其中服务器包括地图信息存储单元，用于存储随后到某些分区 每个放大级的地图的提取模块，用于在向服务器输入识别码时提取相应的地图信息;以及发送器，用于将提取的地图信息发送到终端，该终端还具有用于接收地图信息的接收器。 还公开了一种用于生产该系统的方法，其包括：准备地形图; 将地图图像分割成多个分区，并将序列号分配给分区，以便随后根据放大阶段赋予具有识别码的分区; 并分割/存储地图图像的每个划分。