公开(公告)号：US07616061B2

公开(公告)日：2009-11-10

申请号：US11336788

申请日：2006-01-23

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F1/483 ,  H03F3/345 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/39

摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.

摘要翻译： 用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路 窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

公开(公告)号：US07847636B2

公开(公告)日：2010-12-07

申请号：US12352380

申请日：2009-01-12

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F1/483 ,  H03F3/345 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/39

摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.

摘要翻译： 用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路 窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

公开(公告)号：US20090140815A1

公开(公告)日：2009-06-04

申请号：US12352380

申请日：2009-01-12

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F1/483 ,  H03F3/345 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/39

摘要： A low noise amplifier (LNA) for ultra wide band receives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.

摘要翻译： 用于超宽带的低噪声放大器（LNA）在不同频带中接收和放大相同的RF信号，并且包括并联耦合的多于一对窄带LNA，以及增加整个电路的负载阻抗的负载电路 窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

公开(公告)号：US20060170502A1

公开(公告)日：2006-08-03

申请号：US11336788

申请日：2006-01-23

申请人： Choong-Yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

发明人： Choong-Yul Cha ,  Hoon-tae Kim ,  Sang-gug Lee

IPC分类号： H03F1/22

CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F1/483 ,  H03F3/345 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/372 ,  H03F2200/39

摘要： A low noise amplifier (LNA) for ultra wide band recives and amplifies identical RF signals in different frequency bands, and includes more than one pair of narrow band LNAs coupled in parallel, and a load circuit which increases load impedance of the entire circuit of the narrow band LNAs. The LNA can not only amplify the RF signal in the UWB but also obtain the low noise and the high gain that are features of the conventional narrow band LNA.

摘要翻译： 用于超宽带的低噪声放大器（LNA）记录并放大不同频带中的相同RF信号，并且包括并联耦合的多于一对窄带LNA以及增加整个电路的负载阻抗的负载电路 窄带LNA。 LNA不仅可以放大UWB中的RF信号，还可以获得作为传统窄带LNA特征的低噪声和高增益。

公开(公告)号：US07310023B2

公开(公告)日：2007-12-18

申请号：US11386696

申请日：2006-03-23

申请人： Choong-yul Cha ,  Hoon-tae Kim

发明人： Choong-yul Cha ,  Hoon-tae Kim

IPC分类号： H03B21/02 ,  H04B1/26

CPC分类号： H04B1/406 ,  H03L7/18 ,  H04B1/71632

摘要： A frequency synthesizer in an ultra wide band (UWB) wireless communication system which transmits and receives data through multiband includes a frequency generation means which generates a plurality of frequency signals; and a frequency adjustment means which receives the plurality of frequency signals from the frequency generation means and generates center frequencies of all or part of sub-bands within the UWB through the frequency adjustment. Since all of the center frequencies of the sub-bands are generated, the utilization of the sub-bands can be enhanced for the wideband wireless communication. Furthermore, it is possible to enable the stable UWB communications by flexibly utilizing all of fourteen sub-bands since the sub-bands suffer less from the frequency interference in a complicated and variable wireless frequency environment.

摘要翻译： 在通过多频带发送和接收数据的超宽带（UWB）无线通信系统中的频率合成器包括产生多个频率信号的频率产生装置; 以及频率调整装置，其从频率发生装置接收多个频率信号，并通过频率调整产生UWB内的全部或部分子频带的中心频率。 由于产生子频带的所有中心频率，所以可以增强对于宽带无线通信的子频带的利用。 此外，通过灵活地利用所有14个子带，能够实现稳定的UWB通信，因为子带在复杂且可变的无线频率环境中的频率干扰较少。

公开(公告)号：US20070008429A1

公开(公告)日：2007-01-11

申请号：US11386696

申请日：2006-03-23

申请人： Choong-yul Cha ,  Hoon-tae Kim

发明人： Choong-yul Cha ,  Hoon-tae Kim

IPC分类号： H04N5/08

CPC分类号： H04B1/406 ,  H03L7/18 ,  H04B1/71632

摘要： A frequency synthesizer in an ultra wide band (UWB) wireless communication system which transmits and receives data through multiband includes a frequency generation means which generates a plurality of frequency signals; and a frequency adjustment means which receives the plurality of frequency signals from the frequency generation means and generates center frequencies of all or part of sub-bands within the UWB through the frequency adjustment. Since all of the center frequencies of the sub-bands are generated, the utilization of the sub-bands can be enhanced for the wideband wireless communication. Furthermore, it is possible to enable the stable UWB communications by flexibly utilizing all of fourteen sub-bands since the sub-bands suffer less from the frequency interference in a complicated and variable wireless frequency environment.

公开(公告)号：US07345551B2

公开(公告)日：2008-03-18

申请号：US11353972

申请日：2006-02-15

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Chun-deok Suh

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Chun-deok Suh

IPC分类号： H04B1/26

CPC分类号： H03B21/04 ,  H03L7/18

摘要： A frequency synthesizer for mixing reference frequencies using at least one control signal has a local oscillator, frequency dividers for dividing a frequency generated from the local oscillator and generating at least one control signal, and a single side band (SSB) mixer for mixing the reference frequencies, using the frequency generated from the local oscillator and the control signal. The frequency synthesizer has a simplified structure, and can easily mix reference frequency signals without a need for additional power.

摘要翻译： 用于使用至少一个控制信号混合参考频率的频率合成器具有本地振荡器，用于分频从本地振荡器产生的频率并产生至少一个控制信号的分频器，以及用于混合参考的单边带（SSB）混频器 频率，使用从本地振荡器产生的频率和控制信号。 频率合成器具有简化的结构，并且可以容易地混合参考频率信号，而不需要额外的功率。

公开(公告)号：US20060183455A1

公开(公告)日：2006-08-17

申请号：US11353972

申请日：2006-02-15

申请人： Choong-yul Cha ,  Hoon-tae Kim ,  Chun-deok Suh

发明人： Choong-yul Cha ,  Hoon-tae Kim ,  Chun-deok Suh

IPC分类号： H04B1/26

CPC分类号： H03B21/04 ,  H03L7/18

摘要： A frequency synthesizer for mixing reference frequencies using at least one control signal has a local oscillator, frequency dividers for dividing a frequency generated from the local oscillator and generating at least one control signal, and a single side band (SSB) mixer for mixing the reference frequencies, using the frequency generated from the local oscillator and the control signal. The frequency synthesizer has a simplified structure, and can easily mix reference frequency signals without a need for additional power.

摘要翻译： 用于使用至少一个控制信号混合参考频率的频率合成器具有本地振荡器，用于分频从本地振荡器产生的频率并产生至少一个控制信号的分频器，以及用于混合参考的单边带（SSB）混频器 频率，使用从本地振荡器产生的频率和控制信号。 频率合成器具有简化的结构，并且可以容易地混合参考频率信号，而不需要额外的功率。

公开(公告)号：US07450925B2

公开(公告)日：2008-11-11

申请号：US11337573

申请日：2006-01-24

申请人： Hyun-su Chae ,  Hoon-tae Kim ,  Eun-chul Park

发明人： Hyun-su Chae ,  Hoon-tae Kim ,  Eun-chul Park

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/30

摘要： A receiver includes first switches for applying either differential signals of an oscillator or a data signal of a transmitter to down-converting mixers; a frequency conversion unit for mixing and applying to the down-converting mixers quadrature signals generated from an arbitrary clock signal generator and the oscillator, and having a PPF for changing a phase difference of I/Q signals according to a control voltage externally applied; a phase difference detection part for checking a phase difference between the I/Q signals and generating the control voltage to be applied to the PPF according to the phase difference so as to correct the phase difference; third switches for applying the data signal processed through the down-converting mixers, filters, and amplifiers to A/D converters and applying the I/Q signals having a predetermined frequency to the phase difference detection part; and a control unit for switching the first and third switches.

摘要翻译： 接收机包括用于将振荡器的差分信号或发射机的数据信号施加到下变频混频器的第一开关; 频率转换单元，用于混合并应用于从任意时钟信号发生器和振荡器产生的下变频混频器正交信号，并具有根据外部施加的控制电压来改变I / Q信号的相位差的PPF; 相位差检测部分，用于检查I / Q信号之间的相位差，并根据相位差产生要施加到PPF的控制电压，以校正相位差; 第三开关，用于将通过下变频混频器，滤波器和放大器处理的数据信号施加到A / D转换器，并将具有预定频率的I / Q信号施加到相位差检测部分; 以及用于切换第一和第三开关的控制单元。

公开(公告)号：US07397316B2

公开(公告)日：2008-07-08

申请号：US11342611

申请日：2006-01-31

申请人： Hyun-su Chae ,  Hoon-tae Kim ,  Jung-eun Lee

发明人： Hyun-su Chae ,  Hoon-tae Kim ,  Jung-eun Lee

IPC分类号： H03K3/03 ,  H03B27/00

CPC分类号： H03K3/0322

摘要： A ring oscillator and a phase error calibration method are provided. The ring oscillator may include a first voltage-current converter for controlling and outputting an amount of tail current Itail according to a magnitude of a first control voltage applied in feedback in a PLL circuit; a second voltage-current converter for controlling and outputting an amount of shift current according to a magnitude of a second control voltage applied from a system phase error detector; and differential amplifiers for controlling, for output signals, a delay time of signals based on the applied tail current amount and a shift time of the signals based on the shift current amount. Thus, a phase relation between in-phase and quadrature-phase signals outputted from the ring oscillator may be controlled.

摘要翻译： 提供了环形振荡器和相位误差校准方法。 环形振荡器可以包括第一电压 - 电流转换器，用于根据施加在PLL电路中的反馈中的第一控制电压的大小来控制和输出尾流量Itail的量; 第二电压电流转换器，用于根据从系统相位误差检测器施加的第二控制电压的大小来控制和输出移位电流量; 以及差分放大器，用于根据施加的尾​​电流量和基于移位电流量的信号的移位时间来控制输出信号的信号延迟时间。 因此，可以控制从环形振荡器输出的同相和正交相位信号之间的相位关系。