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    • 1. 发明授权
    • Space-time multiuser detector in mobile communication system and method thereof
    • 移动通信系统中的时空多用户探测器及其方法
    • US07567609B2
    • 2009-07-28
    • US11346376
    • 2006-02-03
    • Jin-soo ParkHwan-min KangSeong-soo LeeSung-ho Cho
    • Jin-soo ParkHwan-min KangSeong-soo LeeSung-ho Cho
    • H04L27/30
    • H04B1/71072H04B7/0891H04L1/0631
    • A space-time multiuser detector simultaneously reduces multiple access interference (MAI) and multipath channel distortion (MCD) that are disadvantages of mobile communication systems. The space-time multiuser detector includes a plurality of receiving antennas; a channel estimator which estimates signals received via the receiving antennas; a space-time diversity decoder which performs space-time decoding with respect to the signals provided from the channel estimator and performs diversity combination; a signal aligner which aligns the signals provided from the space-time diversity decoder; and a successive interference cancellation detector which generates an interference signal from the signals that are provided from the signal aligner one by one in sequence, and removes the interference signal from the received original signals.
    • 时空多用户检测器同时降低了移动通信系统的多重接入干扰(MAI)和多径信道失真(MCD)。 时空多用户检测器包括多个接收天线; 估计经由接收天线接收的信号的信道估计器; 空时分集解码器,对从信道估计器提供的信号执行空时解码,并执行分集组合; 对准从时空分集解码器提供的信号的信号对准器; 以及连续的干扰消除检测器,其从依次从信号对准器提供的信号中产生干扰信号,并从接收到的原始信号中去除干扰信号。
    • 3. 发明授权
    • Quadrature voltage controlled oscillator
    • 正交压控振荡器
    • US07375596B2
    • 2008-05-20
    • US11348229
    • 2006-02-07
    • Jin-soo ParkChan-young JeongChang-sik YooSeong-soo LeeHeung-bae Lee
    • Jin-soo ParkChan-young JeongChang-sik YooSeong-soo LeeHeung-bae Lee
    • H03B5/00
    • H03B27/00H03B5/1215H03B5/1228H03B5/1243H03B2200/0078
    • A quadrature voltage controlled oscillator having low phase noise and excellent output swing characteristics includes a first voltage controlled oscillator for outputting a positive in-phase output signal and a negative in-phase output signal; a second voltage controlled oscillator for outputting a positive quadrature-phase output signal and a negative quadrature-phase output signal, the second voltage controlled oscillator having a symmetrical structure with the first voltage controlled oscillator and constituting a feedback loop together with the first voltage controlled oscillator; a first constant current source for supplying constant current to the first voltage controlled oscillator in response to the output signals; and a second constant current source for supplying constant current to the second voltage controlled oscillator in response to the output signals.
    • 具有低相位噪声和优异输出摆幅特性的正交压控振荡器包括用于输出正同相输出信号和负同相输出信号的第一压控振荡器; 用于输出正正交相输出信号和负正交相输出信号的第二压控振荡器,所述第二压控振荡器与所述第一压控振荡器具有对称结构,并与所述第一压控振荡器一起构成反馈回路 ; 用于响应于所述输出信号向所述第一压控振荡器提供恒定电流的第一恒流源; 以及用于响应于输出信号向第二压控振荡器提供恒定电流的第二恒流源。
    • 4. 发明授权
    • Compact multilayer band-pass filter and method using interdigital capacitor
    • 紧凑型多层带通滤波器及使用叉指电容的方法
    • US07336144B2
    • 2008-02-26
    • US11055115
    • 2005-02-11
    • Seong-soo LeeJin-soo ParkYong-jun Kim
    • Seong-soo LeeJin-soo ParkYong-jun Kim
    • H03H7/00H01P1/20H01P3/08
    • H01P1/20345
    • A compact multilayer band-pass filter using an interdigital capacitor which can be integrated into a compact form in a relatively low frequency band. The band-pass filter filters only a signal of a predetermined frequency band from a signal applied through an input terminal, and outputs a filtered signal to an output terminal. The band-pass filter includes at least one pair of transmission lines, respectively formed between the input terminal and the output terminal provided on an uppermost layer, for generating an inductor component, a capacitance compensation unit, with the interdigital capacitor having a plurality of layers, for loading a specified capacitance to one end of the transmission line, and a ground layer coupled to a specified layer of the capacitance compensation unit and the other end of the transmission line and formed on a lowermost layer.
    • 一种使用交叉指型电容器的紧凑型多层带通滤波器,可以在相对低的频带内集成成紧凑形式。 带通滤波器仅从通过输入端子施加的信号滤除预定频带的信号,并将滤波后的信号输出到输出端子。 带通滤波器包括分别形成在输入端子和设置在最上层的输出端子之间的至少一对传输线,用于产生电感器部件,电容补偿单元,其中叉指电容器具有多个层 用于将指定的电容加载到传输线的一端,以及耦合到电容补偿单元的特定层和传输线的另一端并形成在最下层上的接地层。
    • 6. 发明申请
    • Compact multilayer band-pass filter and method using interdigital capacitor
    • 紧凑型多层带通滤波器及使用叉指电容的方法
    • US20050200436A1
    • 2005-09-15
    • US11055115
    • 2005-02-11
    • Seong-soo LeeJin-soo ParkYong-jun Kim
    • Seong-soo LeeJin-soo ParkYong-jun Kim
    • H01P1/205H01P1/203
    • H01P1/20345
    • A compact multilayer band-pass filter using an interdigital capacitor which can be integrated into a compact form in a relatively low frequency band. The band-pass filter filters only a signal of a predetermined frequency band from a signal applied through an input terminal, and outputs a filtered signal to an output terminal. The band-pass filter includes at least one pair of transmission lines, respectively formed between the input terminal and the output terminal provided on an uppermost layer, for generating an inductor component, a capacitance compensation unit, with the interdigital capacitor having a plurality of layers, for loading a specified capacitance to one end of the transmission line, and a ground layer coupled to a specified layer of the capacitance compensation unit and the other end of the transmission line and formed on a lowermost layer.
    • 一种使用交叉指型电容器的紧凑型多层带通滤波器,可以在相对低的频带内集成成紧凑形式。 带通滤波器仅从通过输入端子施加的信号滤除预定频带的信号,并将滤波后的信号输出到输出端子。 带通滤波器包括分别形成在输入端子和设置在最上层的输出端子之间的至少一对传输线,用于产生电感器部件,电容补偿单元,其中叉指电容器具有多个层 用于将指定的电容加载到传输线的一端,以及耦合到电容补偿单元的特定层和传输线的另一端并形成在最下层上的接地层。
    • 7. 发明授权
    • Subharmonic mixer capable of reducing noise and enhancing gain and linearlty
    • 能够降低噪音并增强增益和线性度的次谐波混频器
    • US07616937B2
    • 2009-11-10
    • US11438223
    • 2006-05-23
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • H04B1/26H04B1/28
    • H03D7/166
    • A subharmonic mixer, including an amplification unit for amplifying an input signal using at least one pair of amplification devices connected in parallel and a mixing unit for mixing the amplified signal with local oscillation signals from local oscillators is provided. The mixing unit performs switching over the amplification devices and at least four pairs of switching devices connected in parallel with each other, two pairs of switching devices being connected in parallel with each other and performing switching over one amplification device. The switching devices are supplied with local oscillation signals having different phases respectively, and two switching devices forming a pair are connected in parallel with each other and supplied with local oscillation signals having a 180° phase difference therebetween. Accordingly, the switching stage is formed with one stage, the operation is enabled with low-voltage power supplies, and noise performance, linearity, and gain are enhanced.
    • 提供了一种次谐波混频器,其包括用于使用并联连接的至少一对放大装置放大输入信号的放大单元和用于将放大的信号与来自本地振荡器的本地振荡信号混合的混合单元。 混合单元对放大装置进行切换,并且至少四对开关装置彼此并联连接,两对开关装置彼此并联并执行一个放大装置的切换。 为开关器件分别提供具有不同相位的本地振荡信号,并且形成一对的两个开关器件彼此并联连接并且提供与它们之间具有180°相位差的本地振荡信号。 因此,开关级形成为一级,通过低压电源实现动作,提高噪声性能,线性度和增益。