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公开(公告)号：KR100401128B1
公开(公告)日：2003-10-10
申请号：KR1020010015676
申请日：2001-03-26
Applicant: 한국전자통신연구원
IPC: H01P5/12
Abstract: PURPOSE: A high-power-output coupler and a distributor having the center frequency shift characteristics are provided to increase the impedance matching between discontinuous interfaces by controlling the length of a resonance stub according to the required frequency bandwidth and characteristics. CONSTITUTION: A main frame(100) includes a plurality of cylindrical waveguide. One side of a first coupling unit(110) is connected to plural external tracks and the other side thereof is joined with the respective waveguide, to connect respective external tracks one-to-one to the respective waveguide. One surface of a second coupling unit(120) has plural connecting surfaces connected one-to-one to the waveguide. The other surface of the second coupling unit(120) is connected to a common track to connect the respective waveguide multiple-to-one to the common track. A third ring-shaped coupling unit(130) is located between the second coupling unit(120) and the main frame(100) and assists the join between the waveguide and the connecting surfaces.
Abstract translation: 目的：提供具有中心频移特性的高功率输出耦合器和分配器，通过根据所需频率带宽和特性控制谐振桩长度来增加不连续接口之间的阻抗匹配。 构成：主框架（100）包括多个圆柱形波导。 第一耦合单元（110）的一侧连接到多个外部轨道，并且其另一侧连接到相应的波导，以将相应的外部轨道一对一地连接到相应的波导。 第二耦合单元（120）的一个表面具有与波导一一对应连接的多个连接表面。 第二耦合单元（120）的另一个表面连接到公共轨道以将相应的波导多对一地连接到公共轨道。 第三环形联接单元（130）位于第二联接单元（120）和主框架（100）之间并且辅助波导和连接表面之间的接合。
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公开(公告)号：KR1020030055418A
公开(公告)日：2003-07-04
申请号：KR1020010084938
申请日：2001-12-26
Applicant: 한국전자통신연구원
IPC: H01Q9/30
Abstract: PURPOSE: A monopole antenna is provided to be capable of being used over a broadband and a low frequency band. CONSTITUTION: The first radiation pole(1) is projected from a ground plane(2) and has a predetermined height. The first radiation plate(3) is loaded on an end of the first radiation pole, and the first radiation cylinder(4) is formed along an edge of the first radiation plate. The second radiation pole(9) is connected to the first radiation pole and is projected on the first radiation plate. The second radiation plate(10) is loaded on an end of the second pole, and the second radiation cylinder(11) is formed along an edge of the second radiation plate.
Abstract translation: 目的：提供单极天线，以便能够在宽带和低频带上使用。 构成：第一辐射杆（1）从地平面（2）突出并具有预定的高度。 第一辐射板（3）装载在第一辐射极的一端，第一辐射筒（4）沿第一辐射板的边缘形成。 第二辐射极（9）连接到第一辐射极并且突出在第一辐射板上。 第二辐射板（10）装载在第二极的一端，第二辐射筒（11）沿第二辐射板的边缘形成。
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公开(公告)号：KR1020030013199A
公开(公告)日：2003-02-14
申请号：KR1020010047558
申请日：2001-08-07
Applicant: 한국전자통신연구원
IPC: H04N5/50
CPC classification number: H04N5/50 , H04N17/04 , H04N21/4263
Abstract: PURPOSE: A method for automatically measuring a digital broadcasting tuner is provided to perform frequency error connection according to an operation environment accurately and automatically. CONSTITUTION: Initialization for frequency mapping is performed to measure frequency characteristic according to frequency tuning voltage of a tracking filter of each frequency band using a pre-stage of a double frequency conversion tuner(901). The double frequency conversion tuner is measured using a spectrum analyzer(903) for frequency mapping and frequency error correction according to a signal applied to a modulator(900) when the double frequency conversion tuner is normally operated. A digital broadcasting channel signal is applied to the tuner through the modulator to carry out optimization according to a degree of variation in the frequency characteristic.
Abstract translation: 目的：提供一种自动测量数字广播调谐器的方法，以便根据操作环境准确，自动地执行频率错误连接。 构成：使用双频率转换调谐器的前级（901），根据每个频带的跟踪滤波器的频率调谐电压来执行频率映射的初始化以测量频率特性。 当双频变频调谐器正常工作时，根据施加到调制器（900）的信号，使用用于频率映射和频率误差校正的频谱分析仪（903）测量双倍频率转换调谐器。 通过调制器将数字广播信道信号施加到调谐器，以根据频率特性的变化程度进行优化。
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公开(公告)号：KR1020010018220A
公开(公告)日：2001-03-05
申请号：KR1019990034083
申请日：1999-08-18
Applicant: 한국전자통신연구원
IPC: H04N5/50
CPC classification number: H04N5/50 , H04N5/4401
Abstract: PURPOSE: A digital television tuner of automatically selecting channel of wide band frequency using a look up table and a microprocessor is provided to suppress an interference signal which deteriorate an image quality of TV channel or induce a broadcasting impossible state. CONSTITUTION: The digital television tuner of automatically selection of channel of wide band frequency using a look up table and a microprocessor includes following units. A tuner microprocessor(313) forms an interface with the frequency channel selection information induced by the outside IIC-BUS signal. The respective frequency characteristics of divided bandwidths according to the tuning voltage of a tracking filter are measured and then the look-up table is stored to the ROM(Read Only Memory)(314). Thereafter, when the IIC-BUS signal included frequency information is applied to the microprocessor, the processor transmits the same frequency information to a phase synchronization loop and the ROM. A tracking filter data in which its frequency characteristic is the same as that of the voltage control generator is read among the data values stored to the ROM and transmitted to a 14 bit D/A(Path b,315). The D/A outputs an analog value corresponding to the transmitted data and transmits to an OP AMP(316). The analog value is changed into a constant DC value through a low pass filter(317) and then a frequency tuning voltage of the tracking filter is provided.
Abstract translation: 目的：提供使用查询表和微处理器自动选择宽带频道的数字电视调谐器，以抑制恶化TV频道的图像质量或引起广播不可能状态的干扰信号。 构成：使用查找表和微处理器自动选择宽带频道的数字电视调谐器包括以下单元。 调谐器微处理器（313）与由外部IIC-BUS信号引起的频道选择信息形成接口。 测量根据跟踪滤波器的调谐电压的分频带宽的相应频率特性，然后将查找表存储到ROM（只读存储器）（314）。 此后，当将IIC-BUS信号包括频率信息应用于微处理器时，处理器将相同的频率信息发送到相位同步环路和ROM。 在存储到ROM中的数据值中读取其频率特性与电压控制发生器的频率特性相同的跟踪滤波器数据，并发送到14位D / A（路径b，315）。 D / A输出对应于发送数据的模拟值，并传输到OP AMP（316）。 模拟值通过低通滤波器（317）变为恒定DC值，然后提供跟踪滤波器的频率调谐电压。
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Patent Agency Ranking
公开(公告)号：KR102235686B1
公开(公告)日：2021-04-06
申请号：KR1020130166381
申请日：2013-12-30
Applicant: 한국전자통신연구원 , 고려대학교 산학협력단
IPC: H04B7/04
Abstract: MIMO 기반신호간섭제거방법이제공되며, 적어도하나의수신기로참조신호를전송하는단계, 적어도하나의수신기에서채널정보를추정하고, 추정되어피드백된채널정보를수신하는단계, 수신된채널정보를이용하여송신프리코딩행렬, 빔포밍행렬및 가중행렬을생성하는단계및 적어도하나의수신기로상기빔 포밍행렬및 가중행렬을포함한정보를파일럿신호에포함시켜전송하는단계를포함한다.
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公开(公告)号：KR101824196B1
公开(公告)日：2018-01-31
申请号：KR1020120153355
申请日：2012-12-26
Applicant: 한국전자통신연구원
CPC classification number: H04L5/06 , H04L5/0007 , H04L5/0073 , H04W16/10 , H04W16/14 , H04W28/16 , H04W72/082 , H04W74/002 , H04W84/12
Abstract: 본발명은비면허대역에서액세스포인트들간에신호간섭을회피시키는장치및 방법에관한것이다. 본발명은제1 액세스포인트에인접하는제2 액세스포인트가존재하는지여부를판별하는인접 AP 존재판별부; 제2 액세스포인트가존재하는것으로판별되면제1 액세스포인트와제2 액세스포인트의동작채널이중첩되는지여부를판별하는동작채널중첩판별부; 제1 액세스포인트와제2 액세스포인트의동작채널이중첩되는것으로판별되면비중첩되는동작채널설정이가능한지여부를판별하는비중첩채널설정판별부; 및비중첩되는동작채널설정이불가능한것으로판별되면제1 액세스포인트의동작채널을제2 액세스포인트와공유하도록제어하는채널사용제어부를포함하는것을특징으로하는액세스포인트들간 간섭회피장치를제안한다. 본발명에따르면 OBSS 간간섭문제를해결할수 있으며 AP간간단한메시지교환을통해전체네트워크의오버헤드를최소화하면서효과적인채널공유가가능해진다.
Abstract translation: 本发明涉及用于避免免许可频段中的接入点之间的信号干扰的设备和方法。 本发明的特征在于包括：邻居AP存在鉴别单元，用于鉴别是否存在与第一接入点相邻的第二接入点; 操作信道重叠确定单元，用于如果确定存在第二接入点，则确定第一接入点和第二接入点的操作信道是否重叠; 非重叠信道设置确定单元，用于如果确定第一接入点和第二接入点的操作信道重叠，则确定是否可以进行非重叠操作信道设置; 以及信道使用控制单元，用于当确定操作信道设置不能与第一接入点重叠时，控制第一接入点的操作信道与第二接入点共享。 根据本发明，可以解决OB间干扰问题，并且可以实现有效的信道共享，同时通过AP之间简单的消息交换来最小化整个网络的开销。
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