公开(公告)号：US07389098B2

公开(公告)日：2008-06-17

申请号：US10947863

申请日：2004-09-23

Applicant: Nam Jin Oh ,  Moon Su Yang ,  Sang Gug Lee

Inventor： Nam Jin Oh ,  Moon Su Yang ,  Sang Gug Lee

IPC: H04B1/10

CPC classification number: H04B1/30

Abstract: Disclosed is a heterodyne receiver for low noise and image frequency repression, comprising: a low noise amplifier for receiving an input signal from an antenna and amplifying the signal while reducing a noise figure of the input signal; and a frequency converter for receiving both the input signal outputted from the low noise amplifier and a local oscillation signal, filtering the signals to repress gain of the input signal at an image frequency band and increase gain of the input signal at a signal frequency band, and converting the frequency of the signals to the intermediate frequency band.

Abstract translation: 公开了一种用于低噪声和图像频率抑制的外差接收机，包括：低噪声放大器，用于从天线接收输入信号并放大信号同时降低输入信号的噪声系数; 以及频率转换器，用于接收从低噪声放大器输出的输入信号和本地振荡信号，对信号进行滤波以抑制图像频带处的输入信号的增益，并增加信号频带处的输入信号的增益， 并将信号的频率转换成中频带。

公开(公告)号：US07123112B2

公开(公告)日：2006-10-17

申请号：US10941585

申请日：2004-09-15

Applicant: Dong Kyun Kang ,  Choong-yul Cha ,  Sang-Gug Lee

Inventor： Dong Kyun Kang ,  Choong-yul Cha ,  Sang-Gug Lee

IPC: H03B5/04

CPC classification number: H03B5/1228 ,  H03B5/1218 ,  H03B5/1243

Abstract: A voltage controlled oscillator is provided. The oscillator has an oscillator amplifier core formed of a complementary pair of FETs connected with their gates in common and connected to share a bias current. An inductance is connected between the common gates and the common drains of the FETs. The inductance may be an inductor element or an inductance of a physical structure of the circuit, such as a bond wire. The voltage controlled oscillator includes a variable capacitor stage connected at the input of the oscillator amplifier stage and a buffer amplifier stage connected at the output of the oscillator amplifier stage. The buffer amplifier of one embodiment includes a pair of complementary FETs having common gates connected to the common drains of the FETs of the oscillator amplifier stage. The buffer amplifier stage also include an inductor and a capacitor connected between common drains of the buffer amplifier FETs and the output.

Abstract translation: 提供压控振荡器。 该振荡器具有振荡器放大器芯，其由互补的一对FET形成，与它们的栅极共同连接并连接以共享偏置电流。 电感连接在公共栅极和FET的公共漏极之间。 电感可以是电感器元件或电路的物理结构的电感，例如接合线。 压控振荡器包括连接在振荡器放大器级的输入端的可变电容器级和连接在振荡器放大器级的输出端的缓冲放大器级。 一个实施例的缓冲放大器包括一对互补FET，其具有连接到振荡器放大器级的FET的公共漏极的公共栅极。 缓冲放大器级还包括电感器和连接在缓冲放大器FET的公共漏极和输出端之间的电容器。

公开(公告)号：US20130194036A1

公开(公告)日：2013-08-01

申请号：US13683439

申请日：2012-11-21

Applicant: Seong Joong KIM ,  Jae Sup LEE ,  Sang Gug LEE ,  Jae Seung LEE ,  Sok Kyun HAN

Inventor： Seong Joong KIM ,  Jae Sup LEE ,  Sang Gug LEE ,  Jae Seung LEE ,  Sok Kyun HAN

IPC: H03D1/18 ,  H03D1/00

CPC classification number: H03D1/18 ,  H03D1/00 ,  H03D1/10

Abstract: An envelope detection apparatus dynamically controlled in response to an input signal and an envelope detection method thereof are provided. The envelope detection apparatus includes an envelope detector configured to output an envelope of an input signal. The envelope detection apparatus further includes a detection band determination unit configured to determine a detection band based on the input signal. The envelope detection apparatus further includes a detection band controller configured to control a detection band of the envelope detector based on the determined detection band.

Abstract translation: 提供了一种根据输入信号动态控制的包络检测装置及其包络检测方法。 包络检测装置包括被配置为输出输入信号的包络的包络检测器。 包络检测装置还包括：检测频带确定单元，被配置为基于输入信号确定检测频带。 包络检测装置还包括检测带控制器，被配置为基于所确定的检测带来控制包络检测器的检测带。

公开(公告)号：US08106718B2

公开(公告)日：2012-01-31

申请号：US12690136

申请日：2010-01-20

Applicant: Sang-Gug Lee ,  Jong-Phil Hong

Inventor： Sang-Gug Lee ,  Jong-Phil Hong

IPC: H03B5/08

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1271

Abstract: A voltage controlled oscillator outputting a differential signal includes: an inductor connected to a first power supply supplying first voltage; first and second transistors for differential switching; first and second variable capacitors connected to the inductor in parallel; a third transistor of which a gate electrode is connected to a first node; and a fourth transistor of which a gate electrode is connected to a second node. When bias voltage is applied to the gate electrode of the first transistor to be turned on, negative resistance is generated by voltage applied to the first capacitor and the second capacitor through the first transistor. When voltage outputted through the first node is applied to the gate electrode of the third transistor to be turned on, the voltage is additionally applied to the first capacitor and the second capacitor by the third transistor to increase the negative resistance.

Abstract translation: 输出差分信号的压控振荡器包括：电感器，连接到提供第一电压的第一电源; 用于差分开关的第一和第二晶体管; 并联连接到电感器的第一和第二可变电容器; 栅电极连接到第一节点的第三晶体管; 以及栅电极连接到第二节点的第四晶体管。 当偏置电压施加到要导通的第一晶体管的栅电极时，通过第一晶体管施加到第一电容器和第二电容器的电压产生负电阻。 当通过第一节点输出的电压被施加到要导通的第三晶体管的栅电极时，由第三晶体管将电压附加到第一电容器和第二电容器以增加负电阻。

公开(公告)号：US20110006849A1

公开(公告)日：2011-01-13

申请号：US12639601

申请日：2009-12-16

Applicant: Sang-sung LEE ,  Sang-gug LEE

Inventor： Sang-sung LEE ,  Sang-gug LEE

IPC: H03B21/00

CPC classification number: H03D7/18 ,  H03D2200/0086

Abstract: Provided are a harmonic rejection mixer and a harmonic rejection mixing method. A plurality of oscillator signals having a ⅓ duty cycle and uniform phase differences may be generated and a differential or quadrature mixer with harmonic rejection may be realized by using the oscillator signals.

Abstract translation: 提供了一种谐波抑制混频器和谐波抑制混频方法。 可以产生具有叁占空比和均匀相位差的多个振荡器信号，并且可以通过使用振荡器信号来实现具有谐波抑制的差分或正交混频器。

公开(公告)号：US20090140815A1

公开(公告)日：2009-06-04

申请号：US12352380

申请日：2009-01-12

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

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

IPC: H03F3/68

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

Abstract: 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.

Abstract translation: 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：US20080130713A1

公开(公告)日：2008-06-05

申请号：US11773261

申请日：2007-07-03

Applicant: Yuna SHIM ,  Dae Young Yoon ,  Sang Gug Lee ,  Jeong Hoon Kim ,  Eung Ju Kim ,  Tah Joon Park

Inventor： Yuna SHIM ,  Dae Young Yoon ,  Sang Gug Lee ,  Jeong Hoon Kim ,  Eung Ju Kim ,  Tah Joon Park

IPC: H04B1/69

CPC classification number: H04L27/2626 ,  H03L7/18 ,  H04B1/71635 ,  H04B1/719

Abstract: A method of generating multi-channel local oscillation frequencies in an ultra wide band communication system having multiple channels of identical bandwidth, the method including: generating at least one reference frequency; generating a plurality of auxiliary frequencies by dividing and multiplying the at least one reference frequency; and generating a plurality of first local oscillation frequencies by mixing the reference frequency and at least some of the plurality of auxiliary frequencies with other auxiliary frequencies, respectively, wherein each of the auxiliary frequencies used in the mixing is greater than an interval between the frequency being mixed and an outermost frequency in the ultra wide band.

Abstract translation: 一种在具有相同带宽的多个信道的超宽带通信系统中产生多信道本地振荡频率的方法，所述方法包括：生成至少一个参考频率; 通过划分和乘以所述至少一个参考频率来产生多个辅助频率; 以及通过将所述参考频率和所述多个辅助频率中的至少一些分别与其他辅助频率混合来产生多个第一本地振荡频率，其中在所述混频中使用的每个辅助频率大于所述频率为 混合和超宽带中的最外频率。

公开(公告)号：US20070247242A1

公开(公告)日：2007-10-25

申请号：US11733042

申请日：2007-04-09

Applicant: Jeong Hoon KIM ,  Sang-Gug LEE ,  Nam-Jin OH ,  Seok-Ju YUN ,  Eung Ju KIM ,  Tah Joon PARK

Inventor： Jeong Hoon KIM ,  Sang-Gug LEE ,  Nam-Jin OH ,  Seok-Ju YUN ,  Eung Ju KIM ,  Tah Joon PARK

IPC: H03L7/085

CPC classification number: H03B27/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B2200/0078

Abstract: A quadrature voltage-controlled oscillator comprises a first delay cell outputting first and second phase signals having a different phase; and a second delay cell outputting third and fourth phase signals having a different phase, the third and fourth phase signals crossing the first and second phase signals, respectively. The first delay cell includes a first differential voltage-controlled oscillator connected to a power supply and outputting the first and second phase signals; and a first coupling section including first and second coupling transistors connected to the first differential voltage-controlled oscillator and first and second coupling capacitors connected in parallel to the first and second coupling transistors, respectively, so as to be grounded, the first coupling section coupling the output phase signals. The second delay cell includes a second differential voltage-controlled oscillator connected to the power supply and outputting the third and fourth phase signals; and a second coupling section including third and fourth coupling transistors connected to the second differential voltage-controlled oscillator and third and fourth coupling capacitors connected in parallel to the third and fourth coupling transistors, respectively, so as to be grounded, the second coupling section coupling the output phase signals.

Abstract translation: 正交压控振荡器包括：输出具有不同相位的第一和第二相位信号的第一延迟单元; 以及输出具有不同相位的第三和第四相位信号的第二延迟单元，所述第三和第四相位信号分别与所述第一和第二相位信号交叉。 第一延迟单元包括连接到电源并输出第一和第二相位信号的第一差分压控振荡器; 以及第一耦合部分，分别包括连接到第一差分压控振荡器的第一和第二耦合晶体管以及分别与第一和第二耦合晶体管并联连接以便接地的第一和第二耦合电容器，第一耦合部分耦合 输出相位信号。 第二延迟单元包括连接到电源并输出第三和第四相位信号的第二差分压控振荡器; 以及第二耦合部分，包括连接到第二差分压控振荡器的第三和第四耦合晶体管，以及分别与第三和第四耦合晶体管并联连接以便接地的第三和第四耦合电容器，第二耦合部分耦合 输出相位信号。

公开(公告)号：US07199675B2

公开(公告)日：2007-04-03

申请号：US10915850

申请日：2004-08-11

Applicant: Sang Gug Lee ,  So Bong Shin ,  Hyoung Chul Choi

Inventor： Sang Gug Lee ,  So Bong Shin ,  Hyoung Chul Choi

IPC: H03B5/12

CPC classification number: H03K3/354 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B27/00 ,  H03K3/0322

Abstract: A quadrature VCO comprises: a first delay cell including a first differential VCO coupled between a power supply and a first current source; and first and second coupling transistors that each include a first terminal, a second terminal coupled to the power supply, and a third terminal, and that vary a current flowing from the second terminal to the third terminal according to quadrature-phase signals applied to the first terminal; and a second delay cell including a second differential VCO coupled between a power supply and a second current source; and third and fourth coupling transistors that each include a first terminal, a second terminal coupled to the power, and a third terminal, and that vary a current flowing from the second terminal to the third terminal according to in-phase signals applied to the first terminal.

Abstract translation: 正交VCO包括：第一延迟单元，包括耦合在电源和第一电流源之间的第一差分VCO; 以及第一和第二耦合晶体管，其每个包括第一端子，耦合到电源的第二端子和第三端子，并且根据施加到第一端子的正交相位信号改变从第二端子流向第三端子的电流 第一码头 以及第二延迟单元，包括耦合在电源和第二电流源之间的第二差分VCO; 以及第三和第四耦合晶体管，其每个包括第一端子，耦合到电力的第二端子和第三端子，并且根据施加到第一端子的同相信号改变从第二端子流向第三端子的电流 终奌站。

公开(公告)号：US20060055477A1

公开(公告)日：2006-03-16

申请号：US10941585

申请日：2004-09-15

Applicant: Dong Kang ,  Choong-yul Cha ,  Sang-Gug Lee

Inventor： Dong Kang ,  Choong-yul Cha ,  Sang-Gug Lee

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1218 ,  H03B5/1243

Abstract: A voltage controlled oscillator is provided. The oscillator has an oscillator amplifier core formed of a complementary pair of FETs connected with their gates in common and connected to share a bias current. An inductance is connected between the common gates and the common drains of the FETs. The inductance may be an inductor element or an inductance of a physical structure of the circuit, such as a bond wire. The voltage controlled oscillator includes a variable capacitor stage connected at the input of the oscillator amplifier stage and a buffer amplifier stage connected at the output of the oscillator amplifier stage. The buffer amplifier of one embodiment includes a pair of complementary FETs having common gates connected to the common drains of the FETs of the oscillator amplifier stage. The buffer amplifier stage also include an inductor and a capacitor connected between common drains of the buffer amplifier FETs and the output.

Abstract translation: 提供压控振荡器。 该振荡器具有振荡器放大器芯，其由互补的一对FET形成，与它们的栅极共同连接并连接以共享偏置电流。 电感连接在公共栅极和FET的公共漏极之间。 电感可以是电感器元件或电路的物理结构的电感，例如接合线。 压控振荡器包括连接在振荡器放大器级的输入端的可变电容器级和连接在振荡器放大器级的输出端的缓冲放大器级。 一个实施例的缓冲放大器包括一对互补FET，其具有连接到振荡器放大器级的FET的公共漏极的公共栅极。 缓冲放大器级还包括电感器和连接在缓冲放大器FET的公共漏极和输出端之间的电容器。