公开(公告)号：KR20100051411A

公开(公告)日：2010-05-17

申请号：KR20080110569

申请日：2008-11-07

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK BONG HYUK ,  LEE SEUNG SIK ,  JANG SEUNG HYUN ,  CHOI SANG SUNG

IPC: H03F1/26 ,  H03F1/42

CPC classification number: H03F1/26 ,  H03F1/223 ,  H03F1/42 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/534

Abstract: PURPOSE: A wideband low noise amplifier is provided to improve a noise property by reducing a noise index and facilitate an ultra wideband input matching. CONSTITUTION: A common gate amplifier(110) amplifies an input signal inputted to an input terminal and outputs the amplified signal to an output terminal. A cascade amplifier(120) amplifies the output voltage of the common gate amplifier inputted to the input terminal and outputs the amplified voltage to the output terminal. A source following buffer(130) outputs the output voltage of the cascade amplifier inputted to the input terminal to reduce signal attenuation.

Abstract translation: 目的：提供宽带低噪声放大器，通过降低噪声指数和促进超宽带输入匹配来提高噪声性能。 构成：公共栅极放大器（110）放大输入到输入端的输入信号，并将放大的信号输出到输出端。 级联放大器（120）放大输入到输入端的公共栅极放大器的输出电压，并将放大的电压输出到输出端。 源跟随缓冲器（130）输出输入到输入端的级联放大器的输出电压以减少信号衰减。

公开(公告)号：KR20100026360A

公开(公告)日：2010-03-10

申请号：KR20080085334

申请日：2008-08-29

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： JANG SEUNG HYUN ,  PARK BONG HYUK ,  LEE SEUNG SIK ,  CHOI SANG SUNG

IPC: H03B5/00 ,  H04B1/16

CPC classification number: H04B1/71635

Abstract: PURPOSE: An apparatus and a method for reducing a leakage signal are provided to remove the leakage signal from a third frequency signal outputted from a frequency converter using a first frequency signal outputted from a local oscillator. CONSTITUTION: A local oscillator(101) generates a first frequency signal. A divider(102) generates a second frequency by dividing the first frequency signal. A frequency converter(103) generates a third frequency signal using the first and second frequency signals. A variable phase shifter(104) adjusts the phase of the first frequency signal. A variable gain amplifier(105) adjusts the gain of the output signal of the variable phase shifter. An operator(106) operates the output signal of the variable gain amplifier and the third frequency signal. A controller(108) controls the gain control rate of the variable gain amplifier and the phase control value of the variable phase shifter.

Abstract translation: 目的：提供一种用于减少泄漏信号的装置和方法，以使用从本地振荡器输出的第一频率信号从频率转换器输出的第三频率信号中去除泄漏信号。 构成：本地振荡器（101）产生第一频率信号。 分频器（102）通过划分第一频率信号来产生第二频率。 变频器（103）使用第一和第二频率信号产生第三频率信号。 可变移相器（104）调节第一频率信号的相位。 可变增益放大器（105）调节可变移相器的输出信号的增益。 操作者（106）操作可变增益放大器和第三频率信号的输出信号。 控制器（108）控制可变增益放大器的增益控制率和可变移相器的相位控制值。