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    • 1. 发明授权
    • Vector modulator using time delay and phase shifter
    • 矢量调制器使用时延和移相器
    • US08400229B2
    • 2013-03-19
    • US13042376
    • 2011-03-07
    • Heon soo ChoiChang su ChoiHyung jun JeonYeong chan KimJae hwan ImJin Kuk Hong
    • Heon soo ChoiChang su ChoiHyung jun JeonYeong chan KimJae hwan ImJin Kuk Hong
    • H03K7/08
    • H03C5/00H03C2200/0058
    • An vector modulator using a time delay and a phase shifter is disclosed, the vector modulator including a time delay (110) varying a phase of an input signal by time-delaying the input signal; a first coupler (120) converting the signal outputted in changed phase through the time delay to an I channel signal and a Q channel signal each having a 90° phase difference and outputting the I/Q channel signals; a first phase shifter (130) varying the phase of the I channel signal outputted from the first coupler within a predetermined phase range and outputting the phase-variable I channel signal; a second phase shifter (140) varying the Q channel signal outputted from the first coupler within a predetermined phase range and outputting the phase-variable Q channel signal; and a second coupler (150) coupling phase-variable I/Q channel signals and outputting the coupled signals.
    • 公开了使用时间延迟和移相器的矢量调制器,该矢量调制器包括通过对输入信号进行时间延迟来改变输入信号的相位的时间延迟(110); 第一耦合器(120),将经改变的相位输出的信号通过时间延迟转换为具有90°相位差的I信道信号和Q信道信号,并输出I / Q信道信号; 第一移相器(130),在预定相位范围内改变从第一耦合器输出的I信道信号的相位,并输出相位变量I信道信号; 第二移相器(140),在预定相位范围内改变从第一耦合器输出的Q信道信号,并输出相位可变Q信道信号; 以及耦合相变I / Q信道信号并输出​​耦合信号的第二耦合器(150)。
    • 4. 发明申请
    • VECTOR MODULATOR USING TIME DELAY AND PHASE SHIFTER
    • 使用时间延迟和相位偏移的矢量调制器
    • US20120229227A1
    • 2012-09-13
    • US13042376
    • 2011-03-07
    • Heon Soo ChoiChang Su ChoiHyung Jun JeonYeong Chan KimJae Hwan ImJin Kuk Hong
    • Heon Soo ChoiChang Su ChoiHyung Jun JeonYeong Chan KimJae Hwan ImJin Kuk Hong
    • H03C3/00
    • H03C5/00H03C2200/0058
    • An vector modulator using a time delay and a phase shifter is disclosed, the vector modulator including a time delay (110) varying a phase of an input signal by time-delaying the input signal; a first coupler (120) converting the signal outputted in changed phase through the time delay to an I channel signal and a Q channel signal each having a 90° phase difference and outputting the I/Q channel signals; a first phase shifter (130) varying the phase of the I channel signal outputted from the first coupler within a predetermined phase range and outputting the phase-variable I channel signal; a second phase shifter (140) varying the Q channel signal outputted from the first coupler within a predetermined phase range and outputting the phase-variable Q channel signal; and a second coupler (150) coupling phase-variable I/Q channel signals and outputting the coupled signals.
    • 公开了使用时间延迟和移相器的矢量调制器,该矢量调制器包括通过对输入信号进行时间延迟来改变输入信号的相位的时间延迟(110); 第一耦合器(120),将经改变的相位输出的信号通过时间延迟转换为具有90°相位差的I信道信号和Q信道信号,并输出I / Q信道信号; 第一移相器(130),在预定相位范围内改变从第一耦合器输出的I信道信号的相位,并输出相位变量I信道信号; 第二移相器(140),在预定相位范围内改变从第一耦合器输出的Q信道信号,并输出相位可变Q信道信号; 以及耦合相变I / Q信道信号并输出​​耦合信号的第二耦合器(150)。
    • 7. 发明申请
    • RFID READER
    • RFID读写器
    • US20110279274A1
    • 2011-11-17
    • US13101079
    • 2011-05-04
    • Jae Hwan IMHun PARKHak Min Seo
    • Jae Hwan IMHun PARKHak Min Seo
    • G08B13/14
    • G06K7/10316G06K7/0008
    • A radio frequency identification (RFID) reader includes an antenna unit and a signal processing unit. The antenna unit splits an input RF signal into a plurality of signals and respectively transmit the split signals through a plurality of antennae by setting the amplitudes or phases of the split signals to be different from one another. The signal processing unit is connected to the antenna unit through one transmission line, and transmits an RF signal to which a DC signal is added to the antenna unit. Accordingly, the amplitude and phase of the RF signal are set variable, so that it is possible to extend the identification range by dynamically controlling an antenna radiation pattern of the RFID reader and to stably communicate with the tag by decreasing the error rate of reception data.
    • 射频识别(RFID)读取器包括天线单元和信号处理单元。 天线单元将输入RF信号分成多个信号,并且通过将分离信号的振幅或相位彼此不同来分别通过多个天线发送分离信号。 信号处理单元通过一条传输线连接到天线单元,并向天线单元发送添加有DC信号的RF信号。 因此,RF信号的振幅和相位被设定为可变的,从而可以通过动态地控制RFID阅读器的天线辐射图案并且通过降低接收数据的错误率来稳定地与标签通信来扩展识别范围 。