公开(公告)号：US08359074B1

公开(公告)日：2013-01-22

申请号：US11546605

申请日：2006-10-11

Applicant: Xiaodong Jin ,  King Chun Tsai ,  Yonghua Song

Inventor： Xiaodong Jin ,  King Chun Tsai ,  Yonghua Song

IPC: H04B1/38

CPC classification number: H04B1/1615 ,  H03F1/26 ,  H03F1/30 ,  H03F1/305 ,  H03F3/24 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/453 ,  H04W52/0274 ,  Y02D70/142 ,  Y02D70/40

Abstract: A dummy circuit is provided to which a bias circuit of an low noise amplifier (LNA) can be coupled to during power down of the LNA. The dummy circuit maintains the bias circuit at an approximately normal operating state to reduce wake up time of the LNA.

Abstract translation: 提供虚拟电路，在LNA的断电期间，可以将低噪声放大器（LNA）的偏置电路耦合到该伪电路。 虚拟电路将偏置电路保持在大致正常的操作状态，以减少LNA的唤醒时间。

公开(公告)号：US08258869B2

公开(公告)日：2012-09-04

申请号：US12894144

申请日：2010-09-30

Applicant: Zhongwu Zhao ,  Xiaodong Jin

Inventor： Zhongwu Zhao ,  Xiaodong Jin

IPC: H03F3/45

CPC classification number: H03F3/45201 ,  H03F1/223 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/45336 ,  H03F2203/45491 ,  H03F2203/45494 ,  H03F2203/45696 ,  H03F2203/45726 ,  H03G1/0029

Abstract: An LNA circuit for providing a wide range of gain while maintaining the output headroom. In a radio frequency (RF) receiver, the signal received by the receiver may be extremely small. For a transmitter in a short distance, the received signal may be relatively strong. A low power amplifier usually is used to amplify the input signal. The LNA has to be designed to accommodate a wide range of gain. A convention LNA circuit supporting a wide range of gain often suffers from reduced output headroom due to increased current through the load resistor. The present invention discloses the use of current bleeding branch to allow a portion of current to flow through the current bleeding branch and consequently reduces the current that would have flown through the load resistor. Consequently, the voltage across the load resistor may be maintained low to allow adequate output headroom.

Abstract translation: LNA电路，用于提供宽范围的增益，同时保持输出净空。 在射频（RF）接收机中，由接收机接收的信号可能非常小。 对于短距离的发射机，接收的信号可能相对较强。 低功率放大器通常用于放大输入信号。 LNA必须设计成适应广泛的收益。 支持宽范围增益的常规LNA电路通常由于通过负载电阻的电流增加而导致输出净空减少。 本发明公开了使用流出血分支以允许电流的一部分流过电流出血支路，从而减少了将流过负载电阻器的电流。 因此，可以将负载电阻器两端的电压维持在低电平以允许足够的输出净空。

公开(公告)号：US20120026407A1

公开(公告)日：2012-02-02

申请号：US13116532

申请日：2011-05-26

Applicant: Yifeng Zhang ,  Rong Liu ,  Peiqi Xuan ,  Xiaodong Jin

Inventor： Yifeng Zhang ,  Rong Liu ,  Peiqi Xuan ,  Xiaodong Jin

IPC: H04N5/50 ,  H04B1/16 ,  H04B1/06

CPC classification number: H04B1/30 ,  H04B1/0032 ,  H04B1/406 ,  H04N5/46 ,  H04N21/42638

Abstract: A configurable multi-standard receiver. A receiver comprises a mixer, a processing module and an analog to digital converter is disclosed to receive multi-standard radio signals. The processing module includes a first selection switch and first parameter control, where the first selection switch configures the processing module as a complex filter or a real-valued filter and the first parameter control configures the characteristics of the filter. Furthermore, the analog to digital converted is preferably implemented using sigma delta modulation to achieve a desired noise shaping. The sigma delta modulation comprises a second selection switch and second parameter control. The second selection switch configures the sigma delta modulation to function as a unit having a complex loop filter or a unit having real-valued loop filters. The second parameter control configures the characteristics of the loop filter. The settings for the first and second selection switches and the first and second control parameters may be stored in a control register.

Abstract translation: 可配置的多标准接收器。 接收机包括混频器，处理模块和模数转换器，用于接收多标准无线电信号。 处理模块包括第一选择开关和第一参数控制，其中第一选择开关将处理模块配置为复数滤波器或实值滤波器，并且第一参数控制器配置滤波器的特性。 此外，优选地，使用Σ-Δ调制来实现模数转换，以实现期望的噪声整形。 Σ-Δ调制包括第二选择开关和第二参数控制。 第二选择开关将Σ-Δ调制配置为具有复环路滤波器或具有实值环路滤波器的单元的单元。 第二个参数控制配置环路滤波器的特性。 第一和第二选择开关以及第一和第二控制参数的设置可以存储在控制寄存器中。

公开(公告)号：US08031006B1

公开(公告)日：2011-10-04

申请号：US12567855

申请日：2009-09-28

Applicant: Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

Inventor： Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

IPC: H03F3/04

CPC classification number: H03G1/0029 ,  H03G1/007 ,  H03G2201/103

Abstract: A low noise amplifier includes an input stage. The input stage includes a first device configured to receive an input signal. A second device is connected to the first device. The second device has a predetermined input impedance. The input stage is configured so that a change in the input signal to the first device causes a linearly proportional change in a conductance of the first device. A voltage at a junction between the first device and the second device remains substantially constant due to the predetermined input impedance of the second device.

Abstract translation: 低噪声放大器包括输入级。 输入级包括被配置为接收输入信号的第一设备。 第二设备连接到第一设备。 第二装置具有预定的输入阻抗。 输入级被配置为使得到第一器件的输入信号的变化导致第一器件的电导的线性比例变化。 由于第二装置的预定输入阻抗，第一装置和第二装置之间的连接处的电压保持基本恒定。

公开(公告)号：US08000067B1

公开(公告)日：2011-08-16

申请号：US10811031

申请日：2004-03-26

Applicant: Xiaodong Jin ,  Sehat Sutardja ,  Lawrence Tse ,  King Chun Tsai

Inventor： Xiaodong Jin ,  Sehat Sutardja ,  Lawrence Tse ,  King Chun Tsai

IPC: H02H9/00

CPC classification number: H02H9/046

Abstract: An electrostatic discharge (ESD) circuit operable to protect an internal circuit from ESD events and protect the internal circuit from high-side supply noise.

Abstract translation: 静电放电（ESD）电路可操作以保护内部电路免受ESD事件的影响，并保护内部电路免受高端电源噪声的影响。

公开(公告)号：US07184799B1

公开(公告)日：2007-02-27

申请号：US10753101

申请日：2004-01-06

Applicant: Xiaodong Jin ,  King Chun Tsai ,  Yonghua Song

Inventor： Xiaodong Jin ,  King Chun Tsai ,  Yonghua Song

IPC: H04B1/38 ,  H04B1/16

CPC classification number: H04B1/1615 ,  H03F1/26 ,  H03F1/30 ,  H03F1/305 ,  H03F3/24 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/453 ,  H04W52/0274 ,  Y02D70/142 ,  Y02D70/40

Abstract: A dummy circuit is provided to which a bias circuit of a low noise amplifier (LNA) can be coupled to during power down of the LNA. The dummy circuit maintains the bias circuit at an approximately normal operating state to reduce wake up time of the LNA.

Abstract translation: 提供虚拟电路，在LNA的断电期间，低噪声放大器（LNA）的偏置电路可耦合到该虚拟电路。 虚拟电路将偏置电路保持在大致正常的操作状态，以减少LNA的唤醒时间。

公开(公告)号：US07113043B1

公开(公告)日：2006-09-26

申请号：US10868064

申请日：2004-06-16

Applicant: Xiaodong Jin ,  Shuran Wei

Inventor： Xiaodong Jin ,  Shuran Wei

IPC: H03G3/10

CPC classification number: H03F1/26 ,  H03F1/30 ,  H03F3/343 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/504

Abstract: A low-noise amplifier includes a first amplification device. The first amplification device includes a control terminal, a first terminal, and a second terminal. The low-noise amplifier also includes a feedback circuit in communication with the control terminal and the first terminal. The feedback circuit compares a voltage, corresponding to an output current associated with the first terminal, with a predetermined reference voltage to generate a bias signal applied to the control terminal for biasing the low-noise amplifier.

Abstract translation: 低噪声放大器包括第一放大装置。 第一放大装置包括控制端子，第一端子和第二端子。 低噪声放大器还包括与控制终端和第一终端通信的反馈电路。 反馈电路将对应于与第一端子相关联的输出电流的电压与预定参考电压进行比较，以产生施加到控制端子以偏置低噪声放大器的偏置信号。

公开(公告)号：US06977553B1

公开(公告)日：2005-12-20

申请号：US10242879

申请日：2002-09-11

Applicant: Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

Inventor： Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

IPC: H03G1/00 ,  H03G3/10

CPC classification number: H03G1/0029 ,  H03G1/007 ,  H03G2201/103

Abstract: An LNA comprising an input stage to amplify an input signal. The input stage has a high linear transconductance that has reduced gain variations in response to changes in process and environmental conditions.

Abstract translation: 一种LNA，包括用于放大输入信号的输入级。 输入级具有高线性跨导，其响应于工艺和环境条件的变化而减小了增益变化。

公开(公告)号：US07463095B1

公开(公告)日：2008-12-09

申请号：US11890738

申请日：2007-08-07

Applicant: Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

Inventor： Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien

IPC: H03F3/04

CPC classification number: H03G1/0029 ,  H03G1/007 ,  H03G2201/103

Abstract: An analog signal processing circuit comprises a bias circuit, a first circuit including a control input that communicates with the bias circuit, a first terminal that generates an output current, and a second terminal, and a device that communicates with the second terminal of the first circuit, that includes a variable resistor, and that has a resistance that is modulated in response to an input signal to the analog signal processing circuit.

Abstract translation: 模拟信号处理电路包括偏置电路，包括与偏置电路通信的控制输入的第一电路，产生输出电流的第一端子和第二端子，以及与第一端子的第二端子通信的装置 电路，其包括可变电阻器，并且具有响应于模拟信号处理电路的输入信号而被调制的电阻。

公开(公告)号：US06977444B1

公开(公告)日：2005-12-20

申请号：US11034093

申请日：2005-01-12

Applicant: Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien ,  Shuran Wei

Inventor： Xiaodong Jin ,  Lawrence Tse ,  King Chun Tsai ,  George Chien ,  Shuran Wei

IPC: H01L23/48 ,  H01L23/49 ,  H01L23/60 ,  H01L23/66

CPC classification number: H01L24/49 ,  H01L23/60 ,  H01L23/66 ,  H01L24/06 ,  H01L24/48 ,  H01L2223/6611 ,  H01L2224/05553 ,  H01L2224/05554 ,  H01L2224/05599 ,  H01L2224/45015 ,  H01L2224/4809 ,  H01L2224/48091 ,  H01L2224/484 ,  H01L2224/49113 ,  H01L2224/85399 ,  H01L2924/00014 ,  H01L2924/01014 ,  H01L2924/01033 ,  H01L2924/14 ,  H01L2924/19041 ,  H01L2924/19042 ,  H01L2924/19043 ,  H01L2924/20752 ,  H01L2924/30105 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/30111 ,  H01L2224/45099 ,  H01L2924/00

Abstract: An input circuit for an integrated circuit (IC), which is mounted on a package having an input pin, rejects signal energy at a first frequency. A first bondwire arranged on the package has one end that communicates with the pin and an opposite end that communicates with components of the IC. A second bondwire located on the package has one end that communicates with the pin and an opposite end that communicates with a capacitance. The capacitance and an inductance of the first and second bondwires resonate at the first frequency to reject signal energy at the first frequency. Bondwires are also used to eliminate external components such as resonant components and impedance matching circuits to reduce cost.

Abstract translation: 用于集成电路（IC）的输入电路，其安装在具有输入引脚的封装上，以第一频率拒绝信号能量。 布置在封装上的第一接合线具有与引脚连通的一端和与IC的部件连通的相对端。 位于封装上的第二接合线具有与销连通的一端和与电容连通的相对端。 第一和第二键合线的电容和电感以第一频率谐振以在第一频率处抑制信号能量。 Bondwires也用于消除诸如谐振元件和阻抗匹配电路的外部元件，以降低成本。