公开(公告)号：US20090270051A1

公开(公告)日：2009-10-29

申请号：US12268627

申请日：2008-11-11

申请人： Sung-tae Choi ,  Jung-han Choi ,  Young-hwan Kim ,  Dong-hyun Lee ,  Hong-yi Kim ,  Ki-chan Eun ,  Chul-soon Park

发明人： Sung-tae Choi ,  Jung-han Choi ,  Young-hwan Kim ,  Dong-hyun Lee ,  Hong-yi Kim ,  Ki-chan Eun ,  Chul-soon Park

IPC分类号： H04B7/06 ,  H04B1/04

CPC分类号： H04B7/0617 ,  H04B7/0682

摘要： Disclosed are a beamformer and a beamforming method. The beamformer includes a plurality of dividers, each of which divides an input signal along a plurality of paths, an input switch which selects one of the dividers such that the input signal is input to the selected divider, a phase shifter which shifts phases of respective output signals from the divider, and an output switch which transmits the output signals from the phase shifter to an antenna.

摘要翻译： 公开了波束成形器和波束成形方法。 波束形成器包括多个分频器，每个分频器沿着多个路径分割输入信号;输入开关，其选择一个分频器，使得输入信号被输入到所选择的分频器;移相器，其相移 来自分频器的输出信号，以及将相移器的输出信号发送到天线的输出开关。

公开(公告)号：US20090212885A1

公开(公告)日：2009-08-27

申请号：US12135363

申请日：2008-06-09

申请人： Cheol-gyu HWANG ,  Sung-tae Choi ,  Jung-han Choi ,  Seung-ho Hwang ,  Young-hwan Kim ,  Dong-hyun Lee

发明人： Cheol-gyu HWANG ,  Sung-tae Choi ,  Jung-han Choi ,  Seung-ho Hwang ,  Young-hwan Kim ,  Dong-hyun Lee

IPC分类号： H01P1/203 ,  H01P7/08 ,  H01P11/00

CPC分类号： H01P1/2013 ,  H01P1/2005 ,  H01P11/008

摘要： Provided is an Electromagnetic Bandgap (EBG) structure, particularly, a resonator and a bandpass filter having an overlay EBG structure, and a method of manufacturing the resonator. The resonator is manufactured by forming a transmission line and ground plates on a substrate, arranging a plurality of reflector units at regular intervals along the longitudinal direction of the transmission line, and removing at least one reflector among the plurality of reflectors, thus forming a common resonating mode. Therefore, since reflector units constructing capacitance components are separated from a substrate, it is possible to prevent electromagnetic waves from leaking out of the substrate and ensure a high Q characteristic in a high frequency environment due to a resonating unit formed between the reflector units.

摘要翻译： 提供了一种电磁带隙（EBG）结构，特别是具有覆盖EBG结构的谐振器和带通滤波器以及制造谐振器的方法。 谐振器通过在基板上形成传输线和接地板来制造，沿着传输线的纵向方向以规则间隔布置多个反射器单元，并且在多个反射器中去除至少一个反射器，从而形成共同的 谐振模式。 因此，由于构成电容元件的反射器单元与基板分离，因此可以防止电磁波从基板泄漏出来，并且由于在反射器单元之间形成谐振单元，从而确保高频环境中的高Q特性。

公开(公告)号：US20090140823A1

公开(公告)日：2009-06-04

申请号：US12058781

申请日：2008-03-31

申请人： Dong-hyun Lee ,  Jung-han Choi ,  Young-hwan Kim ,  Chul-soo Kim ,  Sung-tae Choi ,  Cheol-gyu Hwang

发明人： Dong-hyun Lee ,  Jung-han Choi ,  Young-hwan Kim ,  Chul-soo Kim ,  Sung-tae Choi ,  Cheol-gyu Hwang

IPC分类号： H01P5/10 ,  H03H3/00

CPC分类号： H01P5/10 ,  H01P11/00 ,  Y10T29/49117

摘要： A broadband microstrip balun and a method of manufacturing the same are provided. In the balun, transmission lines formed at different layers partially overlap in parallel with each other, and a common ground having a predetermined opening is inserted between the transmission lines. Thus, an unbalanced signal may be converted into a balanced signal in a broad frequency band using resonance of a common ground plate with the opening and a Bethe hall effect. Also, impedance matching is readily enabled, thereby reducing a parasitic element.

摘要翻译： 提供了一种宽带微带平衡 - 不平衡转换器及其制造方法。 在平衡 - 不平衡转换器中，形成在不同层的传输线部分地彼此平行地重叠，并且在传输线之间插入具有预定开口的公共地面。 因此，使用公共接地板与开口和Bethe霍尔效应的共振，不平衡信号可以被转换成宽频带中的平衡信号。 此外，容易实现阻抗匹配，从而减少寄生元件。

公开(公告)号：US20090121811A1

公开(公告)日：2009-05-14

申请号：US12045101

申请日：2008-03-10

申请人： Sung-tae CHOI ,  Jung-han Choi ,  Cheol-gyu Hwang ,  Young-hwan Kim ,  Dong-hyun Lee

发明人： Sung-tae CHOI ,  Jung-han Choi ,  Cheol-gyu Hwang ,  Young-hwan Kim ,  Dong-hyun Lee

IPC分类号： H01P1/20 ,  H05K3/10

CPC分类号： H01P1/2013 ,  H01P11/007 ,  Y10T29/49155

摘要： A multilayered coplanar waveguide (CPW) filter unit and a method of manufacturing the same are provided. A plate having a capacitance element is formed on or below a CPW layer including a signal line for transmitting a signal and a ground plane. As the filter unit has a multilayered structure, characteristic impedance may be reduced without increasing the width of the signal line. Where an inductor line is inserted between the signal line and the plate, a clear frequency response curve may be obtained without performing an additional process or increasing the area of the filter unit.

摘要翻译： 提供了一种多层共面波导（CPW）滤波器单元及其制造方法。 具有电容元件的板形成在CPW层上或下方，包括用于发送信号的信号线和接地层。 由于滤波器单元具有多层结构，可以在不增加信号线的宽度的情况下降低特性阻抗。 在信号线和板之间插入电感线的情况下，可以获得清晰的频率响应曲线，而不需要执行额外的处理或增加滤波器单元的面积。

公开(公告)号：US20070265011A1

公开(公告)日：2007-11-15

申请号：US11603108

申请日：2006-11-22

申请人： Sang-min Han ,  Young-hwan Kim

发明人： Sang-min Han ,  Young-hwan Kim

IPC分类号： H04Q7/20

CPC分类号： H04B17/327

摘要： A wireless communication terminal and a method for controlling power and using a channel by adjusting a channel bandwidth of the wireless communication terminal. The wireless communication terminal generates a plurality of channels by dividing at least part of a frequency band for ultra-wideband communications to a plurality of frequency bands, receives a chaotic signal having a plurality of frequency components in the channels, and adjusts a frequency bandwidth which forms the channel when a certain condition is satisfied. Accordingly, since the chaotic carrier is transmitted and received in the narrow frequency band by adjusting the frequency bandwidth, the power consumption can be reduced drastically and the high-quality communications are feasible between the portable terminal and the wireless headset in the optimized channel environment. Furthermore, a greater number of portable terminals and wireless headsets can execute the radio communications in a certain wireless communication range.

摘要翻译： 一种无线通信终端和通过调整无线通信终端的信道带宽来控制功率和使用信道的方法。 无线通信终端通过将用于超宽带通信的频带的至少一部分划分到多个频带来生成多个信道，接收在信道中具有多个频率成分的混沌信号，并且调整频带宽度 当满足某个条件时，形成通道。 因此，由于通过调整频率带宽在窄频带内发送和接收混沌载波，所以在优化的信道环境中，便携式终端和无线耳机之间的功耗可以大大降低，高质量通信也是可行的。 此外，更多数量的便携式终端和无线耳机可以在某个无线通信范围内执行无线电通信。