公开(公告)号：US07671692B2

公开(公告)日：2010-03-02

申请号：US12170715

申请日：2008-07-10

申请人： Heon Kook Kwon ,  Joon Hyung Kim ,  Byung Su Kang ,  Kwang Chun Lee

发明人： Heon Kook Kwon ,  Joon Hyung Kim ,  Byung Su Kang ,  Kwang Chun Lee

IPC分类号： H03C3/00 ,  H04L27/20

CPC分类号： H04L27/364 ,  H03C3/406

摘要： The present invention relates to an apparatus and a method for compensating carrier feedthrough in a quadrature modulation system. In order to suppress the carrier feedthrough, and minimize and compensate the carrier feedthrough, differences of baseband differential input DC voltages in an in-phase as well as a quadrature-phase are simultaneously adjusted to 0 or a certain slight voltage difference by a simple analog circuit. Therefore, it is possible to suppress carrier feedthrough using a simple analog type apparatus for compensating carrier feedthrough, and simply achieve an apparatus for carrier feedthrough using a variety of quadrature modulators.

摘要翻译： 本发明涉及在正交调制系统中补偿载波馈通的装置和方法。 为了抑制载波馈通，并且使载波馈通最小化和补偿，同相和正交相中的基带差分输入直流电压的差异通过简单的模拟同时被调整到0或一定的微小电压差 电路。 因此，可以使用用于补偿载波馈通的简单模拟型装置来抑制载波馈通，并且简单地实现使用各种正交调制器的载波馈通装置。

公开(公告)号：US08693572B2

公开(公告)日：2014-04-08

申请号：US13545691

申请日：2012-07-10

申请人： Gweon Do Jo ,  Chang Wahn Yu ,  Heon Kook Kwon ,  Byung Su Kang ,  Kwang Chun Lee

发明人： Gweon Do Jo ,  Chang Wahn Yu ,  Heon Kook Kwon ,  Byung Su Kang ,  Kwang Chun Lee

IPC分类号： H04L27/12

CPC分类号： H03M7/6023 ,  H04L27/26

摘要： The method for transmitting a signal of an orthogonal frequency division multiplexing type according to an exemplary embodiment of the present invention has a configuration allowing a radio unit (RU) to perform a component adding a compression component and a decompression component before/after a serial interface interlocking between a digital unit (DU) and the radio unit (RU) and a component inserting a cyclic prefix (CP) into a signal so as to secure orthogonality of an orthogonal frequency division multiplexing (OFDM) signal, in a structure in which a base station is physically divided into the DU and the RU.

摘要翻译： 根据本发明的示例性实施例的用于发送正交频分复用类型的信号的方法具有允许无线电单元（RU）在串行接口之前/之后执行添加压缩分量和解压缩分量的分量的配置 在数字单元（DU）和无线电单元（RU）之间互锁，以及将一个循环前缀（CP）插入到信号中以便确保正交频分复用（OFDM）信号的正交性的组件，其中 基站在物理上分为DU和RU。

公开(公告)号：US09136612B2

公开(公告)日：2015-09-15

申请号：US13619960

申请日：2012-09-14

申请人： Heon Kook Kwon ,  Byung Su Kang ,  Jae Ho Jung

发明人： Heon Kook Kwon ,  Byung Su Kang ,  Jae Ho Jung

IPC分类号： H01Q21/28

CPC分类号： H01Q21/28

摘要： Disclosed is a front-end apparatus of an RF transceiver connected with an antenna in a wireless communication system. The front-end apparatus of an RF transceiver using radio-frequency passive elements includes: a plurality of band pass filters configured a transmission signal and a reception signal; a first circulator configured to output a first transmission signal to a second terminal and output a second reception signal input; a second circulator configured to output a second transmission signal input into the first terminal to the second terminal and output a first reception signal input into the second terminal to the third terminal; a passive directional double pole and double throw switch configured to process a route to be changed depending on directions of an input and an output; a first antenna configured to transmit the first transmission signal; and a second antenna configured to transmit the second transmission.

摘要翻译： 公开了一种在无线通信系统中与天线连接的RF收发器的前端装置。 使用射频无源元件的RF收发器的前端装置包括：配置有发送信号和接收信号的多个带通滤波器; 第一循环器，被配置为将第一发送信号输出到第二终端，并输出第二接收信号输入; 第二循环器，被配置为将输入到所述第一端子的第二传输信号输出到所述第二端子，并将输入到所述第二端子的第一接收信号输出到所述第三端子; 被动方向双极双掷开关，被配置为根据输入和输出的方向处理要改变的路线; 第一天线，被配置为发送所述第一发送信号; 以及被配置为发送所述第二传输的第二天线。

公开(公告)号：US07102469B2

公开(公告)日：2006-09-05

申请号：US10452863

申请日：2003-06-02

申请人： Young Wan Kim ,  Byung Su Kang ,  Nae-soo Kim ,  Deock Gil Oh ,  Chul Hen Seo ,  Serk Soon Im ,  Jae Hoon Kim

发明人： Young Wan Kim ,  Byung Su Kang ,  Nae-soo Kim ,  Deock Gil Oh ,  Chul Hen Seo ,  Serk Soon Im ,  Jae Hoon Kim

IPC分类号： H01P1/20

CPC分类号： H01P1/20381

摘要： An open loop resonator filter employed aperture on the ground plane is disclosed. The open loop resonator filter using apertures on the ground plane formed on the dielectric substrate, the open loop resonator filter including: one or more open loop resonators formed on a upper side of the dielectric substrate and implemented by microstrip lines; and one or more apertures formed on a predetermined area of the ground plane. The present invention can control the coupling coefficient of the open loop resonator without degrading the group delay characteristics by forming the aperture on the ground plane. Therefore, by forming the aperture on the ground plane, it is possible to design a filter having a wide bandwidth characteristic.

摘要翻译： 公开了一种开环谐振器滤波器，其在接地平面上使用孔径。 所述开环谐振器滤波器使用形成在所述电介质基板上的接地平面上的孔，所述开环谐振器滤波器包括：一个或多个开环谐振器，形成在所述电介质基板的上侧并由微带线实现; 以及形成在接地平面的预定区域上的一个或多个孔。 本发明可以通过在接地平面上形成开口来控制开环谐振器的耦合系数而不降低组延迟特性。 因此，通过在接地平面上形成孔，可以设计具有宽带宽特性的滤波器。