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    System and method for filtering signals in a transceiver
    1.
    发明申请
    System and method for filtering signals in a transceiver 有权
    用于对收发器中的信号进行滤波的系统和方法

    公开(公告)号：US20050048928A1

    公开(公告)日：2005-03-03

    申请号：US10927013

    申请日：2004-08-27

    申请人： Young-Deuk Jeon ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    发明人： Young-Deuk Jeon ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    IPC分类号： H04B1/38

    CPC分类号： H04B1/1027 ,  H03H11/1252 ,  H03H11/1291 ,  H03J1/0008 ,  H04B1/44

    摘要： A system and method for filtering signals in a communications system reduces hardware and chip size requirements by selectively connecting a filter along transmitter and receiver paths of a transceiver. In operation, a controller generated signals for connecting the filter along the transmitter path when the transceiver is in transmitter mode and for connecting the filter along the receiver path when the transmitter is in receiver mode. The controller then generates additional signals for setting one or more parameters of the filter based on the path connected, or put differently based on the operational mode of the transceiver. In a variation, the controller sets the parameters of additional elements coupled to the filter as a way of further controlling processing of the transmitter and receiver signals. The system and method are particularly well suited to controlling the filtering of signals at the front-end of the transceiver having a direct-conversion architecture and in general ones performing time-multiplexing applications.

    摘要翻译： 用于对通信系统中的信号进行滤波的系统和方法通过沿收发器的发射机和接收机路径选择性地连接滤波器来降低硬件和芯片尺寸的要求。 在操作中，当收发器处于发射机模式时，控制器产生用于沿着发射机路径连接滤波器的信号，并且当发射机处于接收机模式时，控制器沿着接收机路径连接滤波器。 然后，控制器产生附加信号，用于基于连接的路径设置滤波器的一个或多个参数，或者基于收发器的操作模式进行不同的设置。 在一个变型中，控制器设置耦合到滤波器的附加元件的参数作为进一步控制发射机和接收机信号的处理的一种方式。 该系统和方法特别适用于控制在具有直接转换架构的收发器的前端处的信号的滤波，并且通常执行时间复用应用。

    System and method for filtering signals in a transceiver
    2.
    发明授权
    System and method for filtering signals in a transceiver 有权
    用于对收发器中的信号进行滤波的系统和方法

    公开(公告)号：US07003265B2

    公开(公告)日：2006-02-21

    申请号：US10927013

    申请日：2004-08-27

    申请人： Young-Deuk Jeon ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    发明人： Young-Deuk Jeon ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    IPC分类号： H04B1/38

    CPC分类号： H04B1/1027 ,  H03H11/1252 ,  H03H11/1291 ,  H03J1/0008 ,  H04B1/44

    摘要： A system and method for filtering signals in a communications system reduces hardware and chip size requirements by selectively connecting a filter along transmitter and receiver paths of a transceiver. In operation, a controller generated signals for connecting the filter along the transmitter path when the transceiver is in transmitter mode and for connecting the filter along the receiver path when the transmitter is in receiver mode. The controller then generates additional signals for setting one or more parameters of the filter based on the path connected, or put differently based on the operational mode of the transceiver. In a variation, the controller sets the parameters of additional elements coupled to the filter as a way of further controlling processing of the transmitter and receiver signals. The system and method are particularly well suited to controlling the filtering of signals at the front-end of the transceiver having a direct-conversion architecture and in general ones performing time-multiplexing applications.

    摘要翻译： 用于对通信系统中的信号进行滤波的系统和方法通过沿收发器的发射机和接收机路径选择性地连接滤波器来降低硬件和芯片尺寸的要求。 在操作中，当收发器处于发射机模式时，控制器产生用于沿着发射机路径连接滤波器的信号，并且当发射机处于接收机模式时，控制器沿着接收机路径连接滤波器。 然后，控制器产生附加信号，用于基于连接的路径设置滤波器的一个或多个参数，或者基于收发器的操作模式进行不同的设置。 在一个变型中，控制器设置耦合到滤波器的附加元件的参数作为进一步控制发射机和接收机信号的处理的一种方式。 该系统和方法特别适用于控制在具有直接转换架构的收发器的前端处的信号的滤波，并且通常执行时间复用应用。

    Apparatus and method of oscillating wideband frequency
    5.
    发明申请
    Apparatus and method of oscillating wideband frequency 有权
    振荡宽带频率的装置和方法

    公开(公告)号：US20060152290A1

    公开(公告)日：2006-07-13

    申请号：US11227439

    申请日：2005-09-16

    申请人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee

    发明人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee

    IPC分类号： H03L7/00

    CPC分类号： H03L7/113 ,  H03L7/099 ,  H03L7/18

    摘要： An apparatus and method of oscillating a wideband frequency are disclosed. The apparatus includes: a frequency oscillating unit for oscillating a predetermined frequency; a phase-locked loop for comparing the oscillated frequency and a reference frequency by feed-backing the oscillated frequency from the frequency oscillating unit and fixing an oscillating frequency of the frequency oscillating unit; and a variable dividing unit for varying a division ratio to approach to a frequency band required by the oscillating frequency and dividing the oscillating frequency.

    摘要翻译： 公开了一种振荡宽带频率的装置和方法。 该装置包括：用于振荡预定频率的频率振荡单元; 锁相环，用于通过从振荡单元馈送振荡频率并固定频率振荡单元的振荡频率来比较振荡频率和参考频率; 以及可变分割单元，用于改变分频比以接近振荡频率所需的频带并分频振荡频率。

    RF front end with reduced carrier leakage
    6.
    发明授权
    RF front end with reduced carrier leakage 有权
    射频前端具有减少的载波泄漏

    公开(公告)号：US06850748B2

    公开(公告)日：2005-02-01

    申请号：US10207986

    申请日：2002-07-31

    申请人： Eunseok Song ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    发明人： Eunseok Song ,  Seung-Wook Lee ,  Jeong-Woo Lee ,  Joonbae Park ,  Kyeongho Lee

    IPC分类号： H04B1/28 ,  H04B1/52 ,  H04B1/00

    CPC分类号： H04B1/28 ,  H04B1/525

    摘要： A method and apparatus that provide a frequency conversion in a radio frequency front-end are disclosed, including a frequency divider that divides an input signal frequency by a predetermined value to produce an output signal frequency; and a frequency mixer that mixes the output signal frequency with a carrier signal frequency to produce a converted signal frequency, which is substantially equal to a difference between the output signal frequency and the carrier signal frequency. The predetermined value and the input signal frequency are selected such that the carrier signal frequency is not substantially equivalent to an integer multiple of the output signal frequency. The method and apparatus can be used in a wireless communication receiver including wireless communication systems and wireless LAN systems.

    摘要翻译： 公开了一种在射频前端提供频率转换的方法和装置，包括将输入信号频率除以预定值以产生输出信号频率的分频器; 以及混频器，其将输出信号频率与载波信号频率进行混合，以产生基本上等于输出信号频率和载波信号频率之差的转换信号频率。 选择预定值和输入信号频率使得载波信号频率基本上不等于输出信号频率的整数倍。 该方法和装置可用于包括无线通信系统和无线LAN系统的无线通信接收机。

    APPARATUS FOR MEASURING IQ IMBALANCE
    7.
    发明申请
    APPARATUS FOR MEASURING IQ IMBALANCE 有权
    测量智商不平等的方法

    公开(公告)号：US20090028231A1

    公开(公告)日：2009-01-29

    申请号：US12034627

    申请日：2008-02-20

    申请人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee ,  Eal Wan Lee

    发明人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee ,  Eal Wan Lee

    IPC分类号： H04B17/00

    CPC分类号： H04L27/3863 ,  H04L27/364

    摘要： The present invention relates to an apparatus and a method for measuring an IQ imbalance. One embodiment according to the present general inventive concept can provide a method for measuring a Tx IQ imbalance generated in an IQ up-conversion mixer and an Rx IQ imbalance generated in an IQ down-conversion mixer, that includes measuring a first IQ imbalance corresponding to a first combination of the Rx IQ imbalance with the Tx IQ imbalance, measuring a second IQ imbalance corresponding to a second combination of the Rx IQ imbalance with the Tx IQ imbalance and obtaining the Tx IQ imbalance and the Rx IQ imbalance from the first IQ imbalance and the second IQ imbalance.

    摘要翻译： 本发明涉及一种用于测量IQ不平衡的装置和方法。 根据本发明总体构思的一个实施例可以提供一种用于测量在IQ上变频混频器中产生的Tx IQ不平衡和在IQ下变频混频器中产生的Rx IQ不平衡的方法，其包括测量对应于 Rx IQ不平衡与Tx IQ不平衡的第一组合，测量对应于Rx IQ不平衡与Tx IQ不平衡的第二组合的第二IQ不平衡，并且从第一IQ不平衡获得Tx IQ不平衡和Rx IQ不平衡 和第二个智商不平衡。

    Apparatus and method of oscillating wideband frequency
    8.
    发明授权
    Apparatus and method of oscillating wideband frequency 有权
    振荡宽带频率的装置和方法

    公开(公告)号：US07190236B2

    公开(公告)日：2007-03-13

    申请号：US11227439

    申请日：2005-09-16

    申请人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee

    发明人： Kyeongho Lee ,  Joonbae Park ,  Jeong-Woo Lee ,  Seung-Wook Lee

    IPC分类号： H03B5/00

    CPC分类号： H03L7/113 ,  H03L7/099 ,  H03L7/18

    摘要： An apparatus and method of oscillating a wideband frequency are disclosed. The apparatus includes: a frequency oscillating unit for oscillating a predetermined frequency; a phase-locked loop for comparing the oscillated frequency and a reference frequency by feed-backing the oscillated frequency from the frequency oscillating unit and fixing an oscillating frequency of the frequency oscillating unit; and a variable dividing unit for varying a division ratio to approach to a frequency band required by the oscillating frequency and dividing the oscillating frequency.

    摘要翻译： 公开了一种振荡宽带频率的装置和方法。 该装置包括：用于振荡预定频率的频率振荡单元; 锁相环，用于通过从振荡单元馈送振荡频率并固定频率振荡单元的振荡频率来比较振荡频率和参考频率; 以及可变分割单元，用于改变分频比以接近振荡频率所需的频带并分频振荡频率。

    Frequency synthesizer using two phase locked loops
    9.
    发明申请
    Frequency synthesizer using two phase locked loops 有权
    频率合成器使用两个锁相环

    公开(公告)号：US20080197891A1

    公开(公告)日：2008-08-21

    申请号：US11902358

    申请日：2007-09-20

    申请人： Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

    发明人： Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

    IPC分类号： H03L7/22 ,  H03B21/01

    CPC分类号： H03L7/23 ,  H03L7/183 ,  H03L7/1976

    摘要： The application discloses system and method embodiments related to a frequency synthesizer. Embodiments of a frequency synthesizer can have a low phase noise and a narrow channel spacing. Embodiments of a frequency synthesizer can use two phase locked loops. One embodiment of a frequency synthesizer can include a reference frequency oscillator for outputting a signal having a reference frequency, an integer-N phase locked loop to generate a first output frequency signal based on the reference frequency signal, a fractional-N phase locked loop to generate a second output frequency based on the reference frequency signal and a circuit to generate an output frequency signal by combining the first output frequency and the second output frequency.

    摘要翻译： 本申请公开了与频率合成器相关的系统和方法实施例。 频率合成器的实施例可以具有低相位噪声和窄通道间隔。 频率合成器的实施例可以使用两个锁相环。 频率合成器的一个实施例可以包括：参考频率振荡器，用于输出具有参考频率的信号，整数N个锁相环，以基于参考频率信号产生第一输出频率信号;分数N相锁相环 基于参考频率信号产生第二输出频率，以及通过组合第一输出频率和第二输出频率来产生输出频率信号的电路。

    Frequency synthesizer using two phase locked loops
    10.
    发明授权
    Frequency synthesizer using two phase locked loops 有权
    频率合成器使用两个锁相环

    公开(公告)号：US07560960B2

    公开(公告)日：2009-07-14

    申请号：US11902358

    申请日：2007-09-20

    申请人： Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

    发明人： Joonbae Park ,  Kyeongho Lee ,  Yido Koo ,  Jeong-Woo Lee

    IPC分类号： H03B21/00

    CPC分类号： H03L7/23 ,  H03L7/183 ,  H03L7/1976

    摘要： The application discloses system and method embodiments related to a frequency synthesizer. Embodiments of a frequency synthesizer can have a low phase noise and a narrow channel spacing. Embodiments of a frequency synthesizer can use two phase locked loops. One embodiment of a frequency synthesizer can include a reference frequency oscillator for outputting a signal having a reference frequency, an integer-N phase locked loop to generate a first output frequency signal based on the reference frequency signal, a fractional-N phase locked loop to generate a second output frequency based on the reference frequency signal and a circuit to generate an output frequency signal by combining the first output frequency and the second output frequency.

    摘要翻译： 本申请公开了与频率合成器相关的系统和方法实施例。 频率合成器的实施例可以具有低相位噪声和窄通道间隔。 频率合成器的实施例可以使用两个锁相环。 频率合成器的一个实施例可以包括：参考频率振荡器，用于输出具有参考频率的信号，整数N个锁相环，以基于参考频率信号产生第一输出频率信号;分数N相锁相环 基于参考频率信号产生第二输出频率，以及通过组合第一输出频率和第二输出频率来产生输出频率信号的电路。