公开(公告)号：US20060181357A1

公开(公告)日：2006-08-17

申请号：US11342611

申请日：2006-01-31

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

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

IPC: H03K3/03

CPC classification number: H03K3/0322

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08259889B2

公开(公告)日：2012-09-04

申请号：US12317527

申请日：2008-12-23

Applicant: Yun-Young Choi ,  Hoon-Tae Kim

Inventor： Yun-Young Choi ,  Hoon-Tae Kim

IPC: H03D3/24 ,  H03L7/06

CPC classification number: H03L7/0814 ,  H03K5/145

Abstract: An apparatus and method for frequency synthesis using a Delay Locked Loop (DLL) are provided. The apparatus includes the DLL, an edge pulse generator, and an inductive-capacitive (LC) tank switch. If phases of a reference frequency signal and a feedback signal are the same and thus are locked, the DLL delays the reference frequency signal. The edge pulse generator generates a plurality of pulse signals representing phase delay amounts of signals. The LC tank switch combines the plurality of pulse signals and generates frequency.

Abstract translation: 提供了一种使用延迟锁定环（DLL）进行频率合成的装置和方法。 该装置包括DLL，边缘脉冲发生器和电感 - 电容（LC）槽开关。 如果参考频率信号和反馈信号的相位相同并因此被锁定，则DLL延迟参考频率信号。 边沿脉冲发生器产生表示信号的相位延迟量的多个脉冲信号。 LC箱开关组合多个脉冲信号并产生频率。

公开(公告)号：US08208887B2

公开(公告)日：2012-06-26

申请号：US12454816

申请日：2009-05-22

Applicant: Hee-Hyun Lee ,  Yun-Young Choi ,  Jong-Won Choi ,  Hoon-Tae Kim

Inventor： Hee-Hyun Lee ,  Yun-Young Choi ,  Jong-Won Choi ,  Hoon-Tae Kim

IPC: H04B1/18

CPC classification number: H04B1/18

Abstract: Provided are a receiving circuit including a balun circuit and a notch filter, and an operating method thereof. The receiving circuit includes a transformer, a notch filter, and a mixer. The transformer converts a single input signal to a differential input signal using a first tap. The notch filter blocks a specific frequency band of the single input signal by connecting a second tap with the first tap of the transformer using a condenser.

Abstract translation: 提供一种包括平衡 - 不平衡转换电路和陷波滤波器的接收电路及其操作方法。 接收电路包括变压器，陷波滤波器和混频器。 变压器使用第一次水龙头将单个输入信号转换为差分输入信号。 陷波滤波器通过使用冷凝器连接第二分接头与变压器的第一抽头来阻塞单个输入信号的特定频带。

公开(公告)号：US20120008705A1

公开(公告)日：2012-01-12

申请号：US13122300

申请日：2009-10-07

Applicant: Young-Taek Lee ,  Hoon-Tae Kim

Inventor： Young-Taek Lee ,  Hoon-Tae Kim

IPC: H04W88/02 ,  H04B15/00

CPC classification number: H04B1/0475 ,  H03C2200/0041 ,  H03D7/18 ,  H03D2200/0045 ,  H03F3/3022 ,  H03F2203/30031 ,  H04B2001/0491 ,  H04L27/364

Abstract: An apparatus and a method for increasing Error Vector Magnitude (EVM) performance representing quality of transmission signal are provided. The apparatus and the method suppress an image frequency component generated due to mismatch of IQ channels in order to transmit/receive a large amount of data without distortion in 4th generation wireless communication standard candidate technologies such as a Long Term Evolution (LTE) system and a mobile WiMax system. The apparatus includes a LOcal frequency (LO) buffer including an amplifier. The LO buffer controls the gain and the phase of the amplifier using a control bit for controlling resistor connection.

Abstract translation: 提供了一种用于增加表示传输信号质量的误差矢量幅度（EVM）性能的装置和方法。 该装置和方法抑制由于IQ信道不匹配而产生的图像频率分量，以便在诸如长期演进（LTE）系统和第四代无线通信标准候选技术的第四代无线通信标准候选技术中发送/接收大量数据而不失真 移动WiMax系统。 该装置包括包括放大器的LOcal频率（LO）缓冲器。 LO缓冲器使用用于控制电阻连接的控制位来控制放大器的增益和相位。

公开(公告)号：US20110260762A1

公开(公告)日：2011-10-27

申请号：US13122294

申请日：2009-10-07

Applicant: Yun-Young Choi ,  Hoon-Tae Kim

Inventor： Yun-Young Choi ,  Hoon-Tae Kim

IPC: H03L7/06

CPC classification number: H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L7/1974

Abstract: An apparatus and a method for calibrating a Voltage Controlled Oscillator (VCO) using a fast frequency comparison based on phase manipulation are provided. The calibrating apparatus includes a phase shifter for comparing an input reference frequency and an input divided frequency and shifting a phase of the reference frequency to make the phase of the reference frequency align with a phase of the divided frequency; a frequency comparator for determining which one of the phase-shifted reference frequency and the divided frequency is higher; and a cap-bank control for determining a frequency to use based on a comparison result of the frequency comparator.

Abstract translation: 提供了使用基于相位操作的快速频率比较来校准压控振荡器（VCO）的装置和方法。 校准装置包括：移相器，用于比较输入参考频率和输入分频，并移位参考频率的相位，使参考频率的相位与分频的相位对准; 频率比较器，用于确定相移基准频率和分频频率中的哪一个较高; 以及用于基于频率比较器的比较结果确定要使用的频率的cap-bank控制。

公开(公告)号：USD641393S1

公开(公告)日：2011-07-12

申请号：US29315577

申请日：2009-07-07

Applicant: Hoon-Tae Kim ,  Gisuke Ota ,  Bong-Uk Lim ,  Yun-Gi Hong

Designer： Hoon-Tae Kim ,  Gisuke Ota ,  Bong-Uk Lim ,  Yun-Gi Hong

公开(公告)号：USD624957S1

公开(公告)日：2010-10-05

申请号：US29316764

申请日：2009-10-29

Applicant: Ji-Sang Park ,  Hoon-Tae Kim ,  Jong-Kyu Kim

Designer： Ji-Sang Park ,  Hoon-Tae Kim ,  Jong-Kyu Kim

公开(公告)号：US20100136942A1

公开(公告)日：2010-06-03

申请号：US12454816

申请日：2009-05-22

Applicant: Hee-Hyun Lee ,  Yun-Young Choi ,  Jong-Won Choi ,  Hoon-Tae Kim

Inventor： Hee-Hyun Lee ,  Yun-Young Choi ,  Jong-Won Choi ,  Hoon-Tae Kim

IPC: H04B1/16

CPC classification number: H04B1/18

Abstract: Provided are a receiving circuit including a balun circuit and a notch filter, and an operating method thereof. The receiving circuit includes a transformer, a notch filter, and a mixer. The transformer converts a single input signal to a differential input signal using a first tap. The notch filter blocks a specific frequency band of the single input signal by connecting a second tap with the first tap of the transformer using a condenser.

Abstract translation: 提供一种包括平衡 - 不平衡转换电路和陷波滤波器的接收电路及其操作方法。 接收电路包括变压器，陷波滤波器和混频器。 变压器使用第一次水龙头将单个输入信号转换为差分输入信号。 陷波滤波器通过使用冷凝器连接第二分接头与变压器的第一抽头来阻塞单个输入信号的特定频带。

公开(公告)号：US07701300B2

公开(公告)日：2010-04-20

申请号：US11481964

申请日：2006-07-07

Applicant: Eun Chul Park ,  Hyun Soo Chae ,  Hoon Tae Kim

Inventor： Eun Chul Park ,  Hyun Soo Chae ,  Hoon Tae Kim

IPC: H03B21/01 ,  H04B1/26

CPC classification number: H04B1/0082 ,  H03B21/02

Abstract: A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.

公开(公告)号：US07668263B2

公开(公告)日：2010-02-23

申请号：US12262234

申请日：2008-10-31

Applicant: Eun Chul Park ,  Hyun Soo Chae ,  Hoon Tae Kim

Inventor： Eun Chul Park ,  Hyun Soo Chae ,  Hoon Tae Kim

IPC: H04L27/04 ,  H03D1/24

CPC classification number: H04B1/0082 ,  H03B21/02

Abstract: A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.

Abstract translation: 提供了一种用于多频带射频（RF）接收机的频率合成装置和方法。 频率合成装置包括具有单个SSB混频器的简单电路配置，因此可以合成六个高频信号。 要输入到SSB混频器的信号包括第一信号和第二信号。 基于VCO和PPF产生第一信号。 而且，第二信号是通过经由多个分频器划分在VCO中产生的信号而产生的多个分频信号中选择的。