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1. 发明申请

US20100220243A1 SYSTEMS AND METHODS FOR CALIBRATING POWER REGULATED COMMUNICATION CIRCUITRY 有权
标题翻译：用于校准功率调节通信电路的系统和方法
公开(公告)号：US20100220243A1
公开(公告)日：2010-09-02
申请号：US12775694
申请日：2010-05-07
申请人： George Chien , King Chun Tsai , Sang Won Son , Alireza Shirvani-Mahdavi , Qiong Sun , Leycheoh Lim
发明人： George Chien , King Chun Tsai , Sang Won Son , Alireza Shirvani-Mahdavi , Qiong Sun , Leycheoh Lim
IPC分类号： H04N5/52 , H04W52/52 , H03L5/00
CPC分类号： H04W52/52 , H04B17/102 , H04B17/13
摘要： Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.
摘要翻译：提供了用于校准通信电路中的控制机构以允许通信电路保持期望的输出功率电平的系统和方法。通信电路包括可变增益调整电路和功率放大器，其一起工作以提供输出功率电平。控制电路基于默认增益参数，高功率阈值和低功率阈值来控制可变增益调整电路。控制电路中的校准电路校准默认增益参数以提供期望的输出功率。功率检测器可以检测期望的输出功率电平以提供输出功率测量。校准电路校准上限和下限功率阈值，以提供输出功率测量周围功率变化范围的可接受范围。

2. 发明授权

US07738904B1 Systems and methods for calibrating power regulated communication circuitry 有权
标题翻译：用于校准功率调节通信电路的系统和方法
公开(公告)号：US07738904B1
公开(公告)日：2010-06-15
申请号：US11437560
申请日：2006-05-19
申请人： George Chien , King Chun Tsai , Sang Won Son , Alireza Shirvani-Mahdavi , Qiong Sun , Leycheoh Lim
发明人： George Chien , King Chun Tsai , Sang Won Son , Alireza Shirvani-Mahdavi , Qiong Sun , Leycheoh Lim
IPC分类号： H04B7/00
CPC分类号： H04W52/52 , H04B17/102 , H04B17/13
摘要： Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.
摘要翻译：提供了用于校准通信电路中的控制机构以允许通信电路保持期望的输出功率电平的系统和方法。通信电路包括可变增益调整电路和功率放大器，其一起工作以提供输出功率电平。控制电路基于默认增益参数，高功率阈值和低功率阈值来控制可变增益调整电路。控制电路中的校准电路校准默认增益参数以提供期望的输出功率。功率检测器可以检测期望的输出功率电平以提供输出功率测量。校准电路校准上限和下限功率阈值，以提供输出功率测量周围功率变化范围的可接受范围。

3. 发明授权

US07394278B1 Methods and apparatus for integrated circuit loopback testing 有权
标题翻译：集成电路环回测试的方法和装置
公开(公告)号：US07394278B1
公开(公告)日：2008-07-01
申请号：US11433128
申请日：2006-05-12
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： G01R31/26
CPC分类号： G01R31/303 , G01R31/3025 , G01R31/31716
摘要： Methods and apparatus are provided for performing loopback testing of integrated circuits (“ICs”). In an embodiment of the invention, an IC can be tested on an undiced wafer by coupling a wireless transmitter of the IC to a wireless receiver of the IC. Core circuitry of the IC can be controlled to cause the transmitter to send at least one signal to the receiver. Upon receipt of the at least one signal, the receiver can send a signal to the core circuitry, which can determine, and possibly record, whether the transmission and receipt were successful. The invention advantageously facilitates efficient testing of unpackaged ICs at the wafer level.
摘要翻译：提供了用于对集成电路（“IC”）进行环回测试的方法和装置。在本发明的一个实施例中，可以通过将IC的无线发射器耦合到IC的无线接收器，在未开封的晶片上测试IC。可以控制IC的核心电路，以使发射机向接收机发送至少一个信号。在接收到至少一个信号时，接收器可以向核心电路发送信号，该信号可以确定并且可能记录发送和接收是否成功。本发明有利地有助于在晶片级别有效测试未封装的IC。

4. 发明授权

US07339434B1 Linear-in-dB variable gain amplifier using geometric ladder circuit 有权
标题翻译：使用几何梯形电路的线性dB可变增益放大器
公开(公告)号：US07339434B1
公开(公告)日：2008-03-04
申请号：US11394561
申请日：2006-03-31
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： H03G3/12
CPC分类号： H03G1/0088 , H03G7/005
摘要： A variable gain amplifier uses a geometric ladder circuit that produces a transfer function having substantially uniform steps measured in dB. Where the ladder has a plurality of substantially identical resistor rungs of a first resistance, one stile that is a conductor connecting the rungs, and another having a series of substantially identical resistors of a second resistance, then for identical inputs at different rungs, the output signal at an end of the ladder is attenuated by a number of substantially equal steps, one for each rung between input and output. For a ladder with a base rung R, an output at an end opposite the base rung, stile resistors of resistance αR, and other rungs all of resistance (1+(1/α))R, the step size is 20 log10(1+α). By using such ladders in op-amp feedback loops, chaining different stages with different values of α, coarse and fine gain adjustment can be provided.
摘要翻译：可变增益放大器使用几何梯形电路，其产生具有以dB为单位测量的基本均匀步长的传递函数。在梯子具有多个基本上相同的第一电阻电阻器梯级的情况下，一个是连接梯级的导体，另一个是具有一系列基本相同的第二电阻的电阻器，然后对于不同级别的相同输入，输出端在梯子末端的信号被衰减许多基本相等的步骤，一个用于输入和输出之间的每个梯级。对于具有基础梯级R的梯子，与基座梯级相反的一端的输出端，电阻αR的阻尼电阻器和其他梯级的所有电阻（1+（1 /α））R，步长为20log _{10（1 +α）。通过在运算放大器反馈回路中使用这样的梯形图，可以提供不同阶段的不同的α，粗和细增益调整值。}

5. 发明授权

US07330064B1 Geometric ladder circuit with linear-in-dB transfer function 有权
标题翻译：具有线性dB传递函数的几何梯形电路
公开(公告)号：US07330064B1
公开(公告)日：2008-02-12
申请号：US11394586
申请日：2006-03-31
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： G06F7/56
CPC分类号： H03M1/664 , H03M1/785
摘要： A geometric ladder circuit produces a transfer function having substantially uniform steps measured in dB. Where the ladder has a plurality of substantially identical resistor rungs of a first resistance, one stile that is a conductor connecting the rungs, and another having a series of substantially identical resistors of a second resistance, then for identical currents injected at different rungs, the output signal at an end of the ladder is attenuated by a number of substantially equal steps, one for each rung between input and output. For a ladder with a base rung R, an output at an end opposite the base rung, stile resistors of resistance αR, and other rungs all of resistance (1+(1/α))R, the step size is 20 log10 (1+α).
摘要翻译：几何梯形电路产生具有以dB为单位测量的基本均匀步长的传递函数。在梯子具有多个基本相同的第一电阻的电阻器梯级的情况下，一个是连接梯级的导体，另一个是具有一系列基本相同的第二电阻的电阻器，然后对于在不同梯级上注入的相同的电流，在梯形结束处的输出信号被衰减了大量相等的步骤，一个用于输入和输出之间的每个梯级。对于具有基础梯级R的梯子，与基座梯级相反的一端的输出端，电阻αR的阻尼电阻器和其他梯级的所有电阻（1+（1 /α））R，步长为20log _{10（1 +α）。}

6. 发明授权

US07733076B1 Dual reference current generation using a single external reference resistor 失效
标题翻译：使用单个外部参考电阻的双参考电流产生
公开(公告)号：US07733076B1
公开(公告)日：2010-06-08
申请号：US11028990
申请日：2005-01-03
申请人： Alireza Shirvani-Mahdavi , George Chien , Yuan-Ju Chao
发明人： Alireza Shirvani-Mahdavi , George Chien , Yuan-Ju Chao
IPC分类号： G05F3/26
CPC分类号： G05F1/561
摘要： Circuits and methods are provided for generating reference currents. In one implementation, a circuit is provided that includes a first source and a current control circuit in communication with the first source. The first source generates a first reference current that is a ratio of a first reference voltage and an external resistance. The current control circuit produces a second reference current that is a ratio of a second reference voltage and the external resistance. The current control circuit produces the second reference current without being directly coupled to the external resistance.
摘要翻译：提供电路和方法用于产生参考电流。在一个实现中，提供了一种电路，其包括与第一源通信的第一源和电流控制电路。第一源产生作为第一参考电压和外部电阻的比率的第一参考电流。电流控制电路产生作为第二参考电压和外部电阻的比率的第二参考电流。电流控制电路产生第二参考电流而不直接耦合到外部电阻。

7. 发明授权

US07557636B1 Geometric ladder circuit with linear-in-dB transfer function 有权
标题翻译：具有线性dB传递函数的几何梯形电路
公开(公告)号：US07557636B1
公开(公告)日：2009-07-07
申请号：US12030068
申请日：2008-02-12
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： G06F7/56
CPC分类号： H03M1/664 , H03M1/785
摘要： A geometric ladder circuit produces a transfer function having substantially uniform steps measured in dB. Where the ladder has a plurality of substantially identical resistor rungs of a first resistance, one stile that is a conductor connecting the rungs, and another having a series of substantially identical resistors of a second resistance, then for identical currents injected at different rungs, the output signal at an end of the ladder is attenuated by a number of substantially equal steps, one for each rung between input and output. For a ladder with a base rung R, an output at an end opposite the base rung, stile resistors of resistance αR, and other rungs all of resistance (1+(1/α))R, the step size is 20 log10(1+α).
摘要翻译：几何梯形电路产生具有以dB为单位测量的基本均匀步长的传递函数。在梯子具有多个基本相同的第一电阻的电阻器梯级的情况下，一个是连接梯级的导体，另一个是具有一系列基本相同的第二电阻的电阻器，然后对于在不同梯级上注入的相同的电流，在梯形结束处的输出信号被衰减了大量相等的步骤，一个用于输入和输出之间的每个梯级。对于具有底座梯级R的梯子，与基座梯级相反的一端的输出端，电阻αR的阻尼电阻器和其他各个电阻（1+（1 /α））R，步长为20log10（1 + alpha）。

8. 发明授权

US07868639B1 Methods and apparatus for integrated circuit loopback testing 有权
标题翻译：集成电路环回测试的方法和装置
公开(公告)号：US07868639B1
公开(公告)日：2011-01-11
申请号：US12027895
申请日：2008-02-07
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： G01R31/26
CPC分类号： G01R31/303 , G01R31/3025 , G01R31/31716
摘要： Methods and apparatus are provided for performing loopback testing of integrated circuits (“ICs”). In an embodiment of the invention, an IC can be tested on an undiced wafer by coupling a wireless transmitter of the IC to a wireless receiver of the IC. Core circuitry of the IC can be controlled to cause the transmitter to send at least one signal to the receiver. Upon receipt of the at least one signal, the receiver can send a signal to the core circuitry, which can determine, and possibly record, whether the transmission and receipt were successful. The invention advantageously facilitates efficient testing of unpackaged ICs at the wafer level.
摘要翻译：提供了用于对集成电路（“IC”）进行环回测试的方法和装置。在本发明的一个实施例中，可以通过将IC的无线发射器耦合到IC的无线接收器，在未开封的晶片上测试IC。可以控制IC的核心电路，以使发射机向接收机发送至少一个信号。在接收到至少一个信号时，接收器可以向核心电路发送信号，该信号可以确定并且可能记录发送和接收是否成功。本发明有利地有助于在晶片级别有效测试未封装的IC。

9. 发明授权

US07199661B1 Variable gain amplification using Taylor expansion 有权
标题翻译：使用泰勒扩展的可变增益放大
公开(公告)号：US07199661B1
公开(公告)日：2007-04-03
申请号：US11029194
申请日：2005-01-03
申请人： Alireza Shirvani-Mahdavi , George Chien
发明人： Alireza Shirvani-Mahdavi , George Chien
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F2203/45352 , H03F2203/45544 , H03F2203/45596 , H03F2203/45641 , H03F2203/45726 , H03G1/0017
摘要： Circuits and methods are provided for variable gain amplification. In one implementation, a circuit is provided that includes a control circuit, an amplifier circuit, and a gain circuit. The control circuit receives a control signal and produces a current control signal, the current control signal being a ratio of a first current and a second current. The amplifier circuit is operable to apply a gain to an input voltage for producing an output voltage. The gain circuit is in communication with the control circuit and the amplifier circuit and receiving the current control signal, the gain circuit operable to adjust the gain responsive to a change in the control signal.
摘要翻译：为可变增益放大提供电路和方法。在一个实施方式中，提供了一种包括控制电路，放大器电路和增益电路的电路。控制电路接收控制信号并产生电流控制信号，电流控制信号是第一电流和第二电流的比值。放大器电路可操作以对输入电压施加增益以产生输出电压。增益电路与控制电路和放大器电路通信并接收电流控制信号，增益电路可操作以响应于控制信号的变化来调节增益。

10. 发明授权

US08340619B1 Phase synchronization of phased array or multiple receiver/transmitter systems 有权
标题翻译：相控阵或多个接收/发射系统的相位同步
公开(公告)号：US08340619B1
公开(公告)日：2012-12-25
申请号：US12695352
申请日：2010-01-28
申请人： Alireza Shirvani-Mahdavi , Saeed Chehrazi
发明人： Alireza Shirvani-Mahdavi , Saeed Chehrazi
IPC分类号： H04B1/26
CPC分类号： H04B1/26 , H03B21/02 , H04B7/04 , H04L27/00
摘要： In one embodiment, a local oscillator (LO) is configured to generate an LO signal. A transmission line receives the LO signal from the local oscillator and transmits the LO signal. A first set of taps and a second set of taps tap the transmission line to receive the LO signal. A plurality of transceiver blocks are configured to receive and transmit a plurality of phase-shifted radio frequency signals. Each transceiver block is coupled to a first tap and a second tap. Each LO signal received for a transceiver block is received with a different phase. However, the same reference phase may be calculated from a first LO signal received from the first tap and a second LO signal received from a second tap. Each transceiver block receives the reference LO signal having the reference phase determined from the first LO signal and the second LO signal.
摘要翻译：在一个实施例中，本地振荡器（LO）被配置为产生LO信号。传输线从本地振荡器接收LO信号并发送LO信号。第一组抽头和第二组抽头敲击传输线以接收LO信号。多个收发器块被配置为接收和发送多个相移射频信号。每个收发器模块耦合到第一抽头和第二抽头。为收发器模块接收的每个LO信号都以不同的相位接收。然而，可以从从第一抽头接收的第一LO信号和从第二抽头接收的第二LO信号来计算相同的参考相位。每个收发器块接收具有从第一LO信号和第二LO信号确定的参考相位的参考LO信号。

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