公开(公告)号：US20060192499A1

公开(公告)日：2006-08-31

申请号：US11362742

申请日：2006-02-28

Applicant: Young-hwan Kim ,  Mi-hyun Son ,  Soo-yong Park ,  Chang-seok Lee

Inventor： Young-hwan Kim ,  Mi-hyun Son ,  Soo-yong Park ,  Chang-seok Lee

IPC: H05B41/24

CPC classification number: H03K5/1534 ,  H04B1/7174

Abstract: An impulse generator including first and second differentiators coupled in parallel to each other, for generating impulses by differentiating a clock signal, and first and second switches for transiting on and off the first and second differentiators respectively to selectively output the impulses generated by the first and second differentiators, and varying polarity of the impulses by changing a direction of a current flowing through load. Accordingly, the negative and positive impulses are selectively output according to the circuit state, reliability of the impulses is improved, and power consumption is reduced.

Abstract translation: 一种脉冲发生器，包括彼此并联耦合的第一和第二微分器，用于通过微分时钟信号产生脉冲;以及第一和第二开关，用于分别开和关第一和第二微分器，以选择性地输出由第一和第二微分器产生的脉冲， 第二微分器，以及通过改变流过负载的电流的方向来改变脉冲的极性。 因此，根据电路状态选择性地输出负脉冲和正脉冲，提高脉冲的可靠性，降低功耗。

公开(公告)号：US20050123067A1

公开(公告)日：2005-06-09

申请号：US10889900

申请日：2004-07-12

Applicant: Young-Wan Kim ,  Chang-Seok Lee ,  Yu-Shin Kim ,  Hee-Jin Yoo ,  Eun-Suk Kwak

Inventor： Young-Wan Kim ,  Chang-Seok Lee ,  Yu-Shin Kim ,  Hee-Jin Yoo ,  Eun-Suk Kwak

IPC: H04L27/26 ,  H03D3/00 ,  H04B15/00

CPC classification number: H03D3/009

Abstract: An apparatus and a method for detecting imbalances between an I-channel signal and a Q-channel signal in order to suppress a spurious signal in a direct conversion digital quadrature transmission system is disclosed. The apparatus includes: a compensation signal generating unit for generating a first and a second compensation signals based on a digital I-channel and a digital Q-channel signals; a baseband signal generating unit for generating an I-channel and a Q-channel baseband signals by converting a radio frequency signal into a low frequency signal; and a detecting unit for detecting a phase imbalance and an amplitude imbalance between the digital I-channel and the digital Q-channel signals by using a correlation between the first and the second compensation signals with the I-channel and the Q-channel baseband signals.

Abstract translation: 公开了一种用于检测I信道信号和Q信道信号之间的不平衡以便抑制直接转换数字正交传输系统中的寄生信号的装置和方法。 该装置包括：补偿信号产生单元，用于基于数字I信道和数字Q信道信号产生第一和第二补偿信号; 基带信号产生单元，用于通过将射频信号转换成低频信号来产生I信道和Q信道基带信号; 以及检测单元，用于通过使用第一和第二补偿信号与I信道和Q信道基带信号之间的相关性来检测数字I信道和数字Q信道信号之间的相位不平衡和幅度不平衡 。