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    • 42. 发明申请
    • Frequency syncrhonization apparatus and method for OFDM system
    • OFDM系统的频率同步化装置和方法
    • US20060271611A1
    • 2006-11-30
    • US11412763
    • 2006-04-27
    • Jong-Han KimKyu-In LeeYong-Soo ChoJae-Kon LeeHwan-Seok Song
    • Jong-Han KimKyu-In LeeYong-Soo ChoJae-Kon LeeHwan-Seok Song
    • G06F15/00
    • H04L27/2657H04L27/2659H04L27/266H04L27/2675
    • Provided is a synchronization apparatus and method for a receiver that performs synchronization in a digital domain and detects a transmission signal. The synchronization apparatus includes an Analog-to-Digital (A/D) converter for converting a received signal into a digital signal, a frequency synchronizer for synchronizing a frequency using the digital signal output from the A/D converter, a signal detection unit for detecting a transmission symbol from a signal synchronized by the frequency synchronizer, and a residual phase detector for compensating for a residual phase of the transmission symbol output from the signal detection unit and outputting the resulting transmission symbol. The frequency synchronizer is capable of accurately and efficiently compensating for a frequency offset by minimizing the time delay caused by subcarrier synchronization using an improved CORDIC algorithm.
    • 提供了一种用于在数字域中执行同步并检测传输信号的接收机的同步装置和方法。 同步装置包括用于将接收信号转换为数字信号的模数(A / D)转换器,用于使用从A / D转换器输出的数字信号使频率同步的频率同步器,用于 从由频率同步器同步的信号中检测发送符号;以及剩余相位检测器,用于补偿从信号检测单元输出的发送符号的残余相位,并输出所得到的发送符号。 频率同步器能够通过使用改进的CORDIC算法最小化由副载波同步引起的时间延迟来精确和有效地补偿频率偏移。
    • 45. 发明授权
    • Apparatus and method for detecting a received on-off keying signal in a CDMA mobile communication system
    • 一种用于在CDMA移动通信系统中检测接收的开 - 关键控信号的装置和方法
    • US06810074B1
    • 2004-10-26
    • US09655573
    • 2000-09-06
    • Jong-Han KimHi-Chan Moon
    • Jong-Han KimHi-Chan Moon
    • H04B169
    • H04B1/7075
    • An apparatus for detecting an on-off keying signal in a CDMA mobile station device is disclosed. A first calculator receives an on-off keying signal and a reference signal transmitted from a base station transmitter at a given transmission power level, despreads the received on-off keying signal, and generates a symbol power level of the despread on-off keying signal. A second calculator despreads the reference signal and generates a power level of the despread reference signal. A multiplier generates a variable threshold value by multiplying the power level of the despread reference signal by a gain determined by a ratio of the transmission power of the reference signal from the base station transmitter to the transmission power of the on-off keying signal from the base station transmitter. A comparator compares the variable threshold value with the symbol power level of the despread on-off keying signal. Further, a symbol detector detects the symbol of the on-off keying signal by comparing a comparison value from the comparator with a prescribed threshold value.
    • 公开了一种用于在CDMA移动站装置中检测开 - 关键控信号的装置。 第一计算器接收以给定发射功率电平从基站发射机发送的开 - 关键控信号和参考信号,对接收到的开 - 关键控信号进行解扩,并产生解扩开关键控信号的符号功率电平 。 第二计算器对参考信号进行解扩,并产生解扩参考信号的功率电平。 乘法器通过将解扩参考信号的功率电平乘以由基站发射机的参考信号的发射功率与来自基站发射机的开关键控信号的发射功率的比确定的增益来产生可变阈值, 基站发射机。 比较器将可变阈值与解扩开关键控信号的符号功率电平进行比较。 此外,符号检测器通过将来自比较器的比较值与规定的阈值进行比较来检测开关键控信号的符号。
    • 49. 发明授权
    • Multilayered ceramic electronic component
    • 多层陶瓷电子元件
    • US08570710B2
    • 2013-10-29
    • US13356320
    • 2012-01-23
    • Jong Han KimHyun Chul Jeong
    • Jong Han KimHyun Chul Jeong
    • H01G4/06
    • H01G4/005H01G4/12H01G4/30
    • There is provided multilayered ceramic electronic component having a 0603 size or less, the multilayered ceramic electronic component including: a ceramic body including a plurality of internal electrodes and dielectric layers disposed between the internal electrodes; and external electrodes disposed on outer surfaces of the ceramic body and electrically connected to the internal electrodes, wherein when a region in which the internal electrodes are overlapped is defined as an active region in a cross section of a central portion in a length direction of the ceramic body, taken in width and thickness directions thereof, the entire area of the cross section taken in the width and thickness directions is defined as At, and an area of the active region is defined as Aa, the following equation is satisfied: 65%≦Aa/At≦90%.
    • 提供具有0603尺寸以下的多层陶瓷电子部件,所述多层陶瓷电子部件包括:陶瓷体,包括设置在所述内部电极之间的多个内部电极和电介质层; 以及设置在所述陶瓷体的外表面并与内部电极电连接的外部电极,其中,当内部电极重叠的区域被定义为在所述内部电极的长度方向上的中心部分的截面中的有源区域 陶瓷体的宽度方向和厚度方向的截面宽度和厚度方向的整个面积被定义为At,有源区域的面积被定义为Aa,满足下式:65% @Aa / At @ 90%。