公开(公告)号：US20110006824A1

公开(公告)日：2011-01-13

申请号：US12808766

申请日：2008-12-03

申请人： Ho-Yong Kang ,  Dae-Young Yoon ,  Trung-kien Nguyen ,  Ji-Eun Kim ,  Xiaohua Yu ,  Nae-Soo Kim ,  Cheol-Sig Pyo ,  Seok-Kyun Han ,  Sang-Gug Lee

发明人： Ho-Yong Kang ,  Dae-Young Yoon ,  Trung-kien Nguyen ,  Ji-Eun Kim ,  Xiaohua Yu ,  Nae-Soo Kim ,  Cheol-Sig Pyo ,  Seok-Kyun Han ,  Sang-Gug Lee

IPC分类号： H03K3/017

CPC分类号： H04W52/0229 ,  Y02D70/122 ,  Y02D70/166

摘要： Provided is a low-power wake-up receiver that is sensitive to electric waves, by which power consumed by a radio frequency (RF) transceiver of a sensor node in a ubiquitous sensor network (USN) is minimized. A wake-up receiver waking up a main transceiver includes a duty cycle signal generation unit controlling a duty cycle of a duty cycle signal; a burst signal detection unit receiving an input signal including a burst signal and a data signal based on the duty cycle signal, amplifying the input signal, and, if the amplified input signal is the burst signal, outputting a control signal; and a data signal detection unit re-amplifying the amplified input signal based on the control signal, and, if the re-amplified input signal is the data signal, outputting a wake-up signal. Power supplied to the duty cycle signal generation unit is interrupted based on the control signal and power is re-supplied to the duty cycle signal generation unit based on the wake-up signal.

摘要翻译： 提供了一种对电波敏感的低功率唤醒接收机，通过这种接收器可以最小化无处不在的传感器网络（USN）中的传感器节点的射频（RF）收发器所消耗的功率。 唤醒主收发器的唤醒接收机包括：占空比信号发生单元，控制占空比信号的占空比; 突发信号检测单元，基于占空比信号接收包括脉冲串信号和数据信号的输入信号，放大输入信号，如果放大的输入信号是脉冲串信号，则输出控制信号; 并且数据信号检测单元基于控制信号对放大的输入信号进行再放大，并且如果再放大的输入信号是数据信号，则输出唤醒信号。 基于该控制信号，中断向占空比信号生成部供给的电力，并根据该唤醒信号将功率重新提供给占空比信号生成部。

公开(公告)号：US20100289592A1

公开(公告)日：2010-11-18

申请号：US12690136

申请日：2010-01-20

申请人： Sang-Gug Lee ,  Jong-Phil Hong

发明人： Sang-Gug Lee ,  Jong-Phil Hong

IPC分类号： H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1271

摘要： 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.

摘要翻译： 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：US20100014866A1

公开(公告)日：2010-01-21

申请号：US12086225

申请日：2006-12-05

申请人： Ho-Yong Kang ,  Hyun-Kyun Choi ,  Quan Le ,  Yool Kwon ,  Bong-Tae Kim ,  Sang-Gug Lee

发明人： Ho-Yong Kang ,  Hyun-Kyun Choi ,  Quan Le ,  Yool Kwon ,  Bong-Tae Kim ,  Sang-Gug Lee

IPC分类号： H04J14/08

CPC分类号： H04B10/6931 ,  H03G3/3084 ,  H04B10/66

摘要： A transimpedance amplifier for a burst mode optical communication converts a burst current signal into differential output voltage signals. Using a multi-level digital AGC mechanism, the transimpedance amplifier is rapidly adapted to a burst signal whose amplitude varies in a wide range. By using an adaptive level detection method, a multi-level digital AGC can be implemented without using ADC. In addition, because the transimpedance amplifier uses a selective reset generation scheme that performs a reset operation for itself after a high power burst, a burst mode operation can be performed without external reset signals. Accordingly, the transimpedance amplifier can be integrated with an optical detector within a TO-can. Furthermore, the transimpedance amplifier can have the burst mode capability and the best sensitivity.

摘要翻译： 用于突发模式光通信的跨阻放大器将突发电流信号转换成差分输出电压信号。 使用多电平数字AGC机制，跨阻放大器快速适应幅度在宽范围内变化的脉冲串信号。 通过使用自适应电平检测方法，可以在不使用ADC的情况下实现多电平数字AGC。 此外，由于跨阻抗放大器使用在高功率突发之后对其自身执行复位操作的选择性复位产生方案，所以可以在没有外部复位信号的情况下执行突发模式操作。 因此，跨阻放大器可以与TO-can内的光学检测器集成。 此外，跨阻放大器可以具有突发模式能力和最佳灵敏度。

公开(公告)号：US07319366B2

公开(公告)日：2008-01-15

申请号：US11409886

申请日：2006-04-24

申请人： Nam-Jin Oh ,  Sang-Gug Lee

发明人： Nam-Jin Oh ,  Sang-Gug Lee

IPC分类号： H03B5/12 ,  H03B21/01

CPC分类号： H03B27/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243

摘要： A local oscillator without a frequency divider is provided. The local oscillator includes a quadrature voltage controlled oscillator generating I and Q signals having a frequency which is one-third of a local oscillation frequency, and a differential second-harmonic signal having a frequency which is two-thirds of the local oscillation frequency, a poly-phase filter converting the differential second-harmonic signal input from the quadrature voltage controlled oscillator into I and Q signals, and a single side band (SSB) mixer receiving the I and Q signals having the frequency which is one-third of the local oscillation frequency from the quadrature voltage controlled oscillator as an input and receiving the I and Q signals having the frequency which is two-thirds of the local oscillation frequency from the poly-phase filter as an input, and outputting the I and Q signals having the local oscillation frequency.

摘要翻译： 提供了没有分频器的本地振荡器。 本地振荡器包括正交压控振荡器，其生成具有本地振荡频率的三分之一的频率的I和Q信号，以及具有作为本地振荡频率的三分之二的频率的差分二次谐波信号， 将从正交压控振荡器输入的差分二次谐波信号转换为I和Q信号的多相滤波器以及接收具有本地的三分之一频率的I和Q信号的单边带（SSB）混频器 振荡频率作为输入，从作为输入的多相滤波器接收具有作为本地振荡频率的三分之二的频率的I和Q信号，并输出具有 本地振荡频率。

公开(公告)号：US06605996B2

公开(公告)日：2003-08-12

申请号：US10039542

申请日：2001-12-31

申请人： Hyun Kyu Yu ,  Sang-Gug Lee ,  Mun Yang Park ,  Seong-Do Kim ,  Yong-Sik Youn ,  Seon-Ho Han ,  Nam-Soo Kim

发明人： Hyun Kyu Yu ,  Sang-Gug Lee ,  Mun Yang Park ,  Seong-Do Kim ,  Yong-Sik Youn ,  Seon-Ho Han ,  Nam-Soo Kim

IPC分类号： H03F345

CPC分类号： H03G1/007 ,  H03F3/45179 ,  H03F2203/45492 ,  H03G1/0023

摘要： An automatically gain controllable linear differential amplifier using a variable degeneration resistor is disclosed. The linear differential amplifier includes an input end, a bias current source, a load unit, a first MOS transistor and a second MOS transistor. The linear differential amplifiers of the present invention can control an amplifying gain according to an input signal and improve linearity IIP3 without needing additional power consumption caused by improving the linearity. The automatically gain controllable linear differential amplifier uses NMOS/PMOS transistor so an integration process of the amplifier can be implemented more conveniently and efficiently.

摘要翻译： 公开了一种使用可变退化电阻的自动增益可控线性差分放大器。 线性差分放大器包括输入端，偏置电流源，负载单元，第一MOS晶体管和第二MOS晶体管。 本发明的线性差分放大器可以根据输入信号控制放大增益，并提高线性度IIP3，而不需要通过提高线性度而引起的附加功耗。 自动增益可控线性差分放大器使用NMOS / PMOS晶体管，因此可以更方便，高效地实现放大器的集成过程。