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公开(公告)号：US07606016B1
公开(公告)日：2009-10-20
申请号：US11845660
申请日：2007-08-27
Applicant: Wayne A. Loeb , Alireza Shirvani-Mahdavi
Inventor： Wayne A. Loeb , Alireza Shirvani-Mahdavi
CPC classification number: H03F1/52 , H02H9/025 , H03F3/191 , H03F2200/231 , H03F2200/27 , H03F2200/435
Abstract: A power amplifier protection circuit that includes protection circuitry to variably shunt an input radio frequency (RF) signal to AC ground, turn off bias to an output transistor of a power amplifier, and turn off the output transistor. The power amplifier protection circuit features an asymmetrical control that can quickly shut off a power amplifier, and turn on the power amplifier at a steady, controlled rate when an output transistor exceeds a predetermined threshold voltage.
Abstract translation: 一种功率放大器保护电路，其包括用于将输入射频（RF）信号可变地分流到AC地的保护电路，将偏置关断到功率放大器的输出晶体管，并关闭输出晶体管。 功率放大器保护电路具有不对称控制，可以快速切断功率放大器，并在输出晶体管超过预定阈值电压时以稳定的受控速率接通功率放大器。
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公开(公告)号：US08638168B1
公开(公告)日：2014-01-28
申请号：US13490901
申请日：2012-06-07
Applicant: David M. Signoff , Li Lin , Renaldi Winoto , Wayne A. Loeb , Shu-Hsien Liao , Ming He
Inventor： David M. Signoff , Li Lin , Renaldi Winoto , Wayne A. Loeb , Shu-Hsien Liao , Ming He
IPC: H03F3/68
CPC classification number: H03F3/68 , H03F1/0244 , H03F3/2175 , H03F3/24
Abstract: Systems and methods for power amplification using multiple digital amplifiers are provided. A power amplifier includes a first digital amplifier configured to process a digital input signal to generate a first analog output signal. The first analog output signal is configured to have a magnitude corresponding to amplitude information of the digital input signal. The power amplifier further includes a second digital amplifier configured to process an adjusted digital input signal to generate a second analog output signal. The second analog output signal is configured to have a magnitude corresponding to amplitude information of the adjusted digital input signal. An adjustment module configured to adjust amplitude information and phase information of the digital input signal generates the adjusted digital input signal. The digital input signal is adjusted to control a relationship between the first analog output signal and the second analog output signal.
Abstract translation: 提供了使用多个数字放大器进行功率放大的系统和方法。 功率放大器包括被配置为处理数字输入信号以产生第一模拟输出信号的第一数字放大器。 第一模拟输出信号被配置为具有对应于数字输入信号的振幅信息的幅度。 功率放大器还包括第二数字放大器，其被配置为处理经调整的数字输入信号以产生第二模拟输出信号。 第二模拟输出信号被配置为具有对应于经调整的数字输入信号的振幅信息的幅度。 被配置为调整数字输入信号的幅度信息和相位信息的调整模块生成调整后的数字输入信号。 调整数字输入信号以控制第一模拟输出信号和第二模拟输出信号之间的关系。
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公开(公告)号：US07756486B1
公开(公告)日：2010-07-13
申请号：US11544163
申请日：2006-10-05
Applicant: Chun-Geik Tan , Randy Tsang , Wayne A. Loeb
Inventor： Chun-Geik Tan , Randy Tsang , Wayne A. Loeb
IPC: H04B1/38
CPC classification number: H04B1/525
Abstract: Circuits, methods, and apparatus that provide isolation between receive and transmit circuits in a wireless transceiver. One example provides switches that can be included on an integrated circuit with at least portions of a wireless transceiver. These switches vary the impedance of transmitter and receiver circuits between a termination impedance and a high impedance by inserting or removing components in parallel with matching networks. Signal losses are minimized since these switches are shunt connected to input and output paths on the wireless circuit and are not connected directly in either signal path.
Abstract translation: 在无线收发器中提供接收和发送电路之间隔离的电路，方法和装置。 一个示例提供可以包括在具有无线收发器的至少一部分的集成电路上的开关。 这些开关通过与匹配网络并联插入或删除组件来改变发射器和接收器电路在终端阻抗和高阻抗之间的阻抗。 信号损耗最小化，因为这些开关分流连接到无线电路上的输入和输出路径，并且不直接连接在任一信号路径中。
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公开(公告)号：US08442451B1
公开(公告)日：2013-05-14
申请号：US12827449
申请日：2010-06-30
Applicant: Chun-Geik Tan , Randy Tsang , Wayne A. Loeb
Inventor： Chun-Geik Tan , Randy Tsang , Wayne A. Loeb
IPC: H04B1/38
CPC classification number: H04B1/525
Abstract: Circuits, methods, and apparatus that provide isolation between receive and transmit circuits in a wireless transceiver. One example provides switches that can be included on an integrated circuit with at least portions of a wireless transceiver. These switches vary the impedance of transmitter and receiver circuits between a termination impedance and a high impedance by inserting or removing components in parallel with matching networks. Signal losses are minimized since these switches are shunt connected to input and output paths on the wireless circuit and are not connected directly in either signal path.
Abstract translation: 在无线收发器中提供接收和发送电路之间隔离的电路，方法和装置。 一个示例提供可以包括在具有无线收发器的至少一部分的集成电路上的开关。 这些开关通过与匹配网络并联插入或删除组件来改变发射器和接收器电路在终端阻抗和高阻抗之间的阻抗。 信号损耗最小化，因为这些开关分流连接到无线电路上的输入和输出路径，并且不直接连接在任一信号路径中。
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公开(公告)号：US20120146730A1
公开(公告)日：2012-06-14
申请号：US13306289
申请日：2011-11-29
Applicant: David M. Signoff , Wayne A. Loeb , Ming He
Inventor： David M. Signoff , Wayne A. Loeb , Ming He
IPC: H03G3/30
CPC classification number: H03F1/30 , H03F2200/447 , H03F2200/468 , H03G3/3042
Abstract: A system includes a power amplifier, a preamplifier, a first temperature sensor, and a bias generator. The power amplifier has a first gain, which is a function of a temperature of the power amplifier. The preamplifier has a second gain, amplifies an input signal, and outputs an amplified signal to the power amplifier. The first temperature sensor senses the temperature and generates a first signal. The bias generator generates a first biasing signal to bias the power amplifier, generates a second biasing signal to bias the preamplifier, and adjusts the second gain by adjusting the second biasing signal based on the first signal. The adjusted second gain compensates a change in the first gain due to the change in the temperature.
Abstract translation: 一种系统包括功率放大器，前置放大器，第一温度传感器和偏置发生器。 功率放大器具有第一增益，其是功率放大器的温度的函数。 前置放大器具有第二增益，放大输入信号，并将放大的信号输出到功率放大器。 第一温度传感器感测温度并产生第一信号。 偏置发生器产生第一偏置信号以偏置功率放大器，产生第二偏置信号以偏置前置放大器，并且通过基于第一信号调整第二偏置信号来调整第二增益。 调整后的第二增益补偿了由于温度变化引起的第一增益的变化。
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Patent Agency Ranking
公开(公告)号：US09031527B1
公开(公告)日：2015-05-12
申请号：US12828113
申请日：2010-06-30
Applicant: King Chun Tsai , Sang Wong Son , Wayne A. Loeb
Inventor： King Chun Tsai , Sang Wong Son , Wayne A. Loeb
CPC classification number: H04B1/30 , H03H7/12 , H03H2007/013 , H03H2210/012 , H03H2210/015 , H03J2200/10 , H04B1/0475 , H04B1/1638
Abstract: Apparatus, systems, and methods implementing techniques for calibrating a filter circuit. A comparator generates an output based on a filter output amplitude signal and a reference amplitude signal. A calibration logic unit receives the comparator output and produces a component code that is used by the filter circuit to adjust one or more component values.
Abstract translation: 用于校准滤波电路的技术的装置，系统和方法。 比较器基于滤波器输出幅度信号和参考幅度信号产生输出。 校准逻辑单元接收比较器输出并产生由滤波器电路用于调整一个或多个分量值的分量代码。
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公开(公告)号：US08988852B2
公开(公告)日：2015-03-24
申请号：US12943234
申请日：2010-11-10
Applicant: David M. Signoff , Wayne A. Loeb
Inventor： David M. Signoff , Wayne A. Loeb
Abstract: In one embodiment, an apparatus includes a first reference voltage coupled to a first metal layer and a second reference voltage coupled to a second metal layer. A first finger type in the plurality of fingers is coupled to the first metal layer at a first area and coupled to the first metal layer and the second metal layer at a second area. A second finger type in the plurality of fingers is coupled to the second metal layer at the first area and coupled to the first metal layer and the second metal layer at the second area. Also, the first finger type and the second finger type alternately positioned next to each other.
Abstract translation: 在一个实施例中，装置包括耦合到第一金属层的第一参考电压和耦合到第二金属层的第二参考电压。 多个指状物中的第一手指类型在第一区域处耦合到第一金属层，并且在第二区域处耦合到第一金属层和第二金属层。 多个指状物中的第二手指类型在第一区域处耦合到第二金属层，并且在第二区域处耦合到第一金属层和第二金属层。 此外，第一手指型和第二手指型彼此交替地定位。
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公开(公告)号：US08599962B1
公开(公告)日：2013-12-03
申请号：US13170791
申请日：2011-06-28
Applicant: Wayne A. Loeb , David M. Signoff
Inventor： Wayne A. Loeb , David M. Signoff
CPC classification number: H03F1/3241 , H03F1/3247 , H04B1/40
Abstract: Apparatus having corresponding methods and non-transitory computer-readable media comprise: a transmitter configured to transmit a signal according to a gain setting, wherein the signal represents a first digital signal; a receiver configured to receive the signal transmitted by the transmitter, and produce a second digital signal based on the signal received by the receiver; a measurement module configured to produce a digital indication of a linearity of the transmitter based on the second digital signal; and a gain setting module configured to control the gain setting in accordance with the digital indication of the linearity of the transmitter.
Abstract translation: 具有相应方法和非暂时性计算机可读介质的装置包括：发射机，被配置为根据增益设置传输信号，其中所述信号表示第一数字信号; 接收器，被配置为接收由发射机发送的信号，并且基于由接收机接收的信号产生第二数字信号; 测量模块，被配置为基于所述第二数字信号产生所述发射机的线性度的数字指示; 以及增益设定模块，被配置为根据所述发射机的线性度的数字指示来控制所述增益设置。
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公开(公告)号：US08441320B2
公开(公告)日：2013-05-14
申请号：US13306289
申请日：2011-11-29
Applicant: David M. Signoff , Wayne A. Loeb , Ming He
Inventor： David M. Signoff , Wayne A. Loeb , Ming He
IPC: H03F3/04
CPC classification number: H03F1/30 , H03F2200/447 , H03F2200/468 , H03G3/3042
Abstract: A system includes a power amplifier, a preamplifier, a first temperature sensor, and a bias generator. The power amplifier has a first gain, which is a function of a temperature of the power amplifier. The preamplifier has a second gain, amplifies an input signal, and outputs an amplified signal to the power amplifier. The first temperature sensor senses the temperature and generates a first signal. The bias generator generates a first biasing signal to bias the power amplifier, generates a second biasing signal to bias the preamplifier, and adjusts the second gain by adjusting the second biasing signal based on the first signal. The adjusted second gain compensates a change in the first gain due to the change in the temperature.
Abstract translation: 一种系统包括功率放大器，前置放大器，第一温度传感器和偏置发生器。 功率放大器具有第一增益，其是功率放大器的温度的函数。 前置放大器具有第二增益，放大输入信号，并将放大的信号输出到功率放大器。 第一温度传感器感测温度并产生第一信号。 偏置发生器产生第一偏置信号以偏置功率放大器，产生第二偏置信号以偏置前置放大器，并且通过基于第一信号调整第二偏置信号来调整第二增益。 调整后的第二增益补偿了由于温度变化引起的第一增益的变化。
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公开(公告)号：US08179648B1
公开(公告)日：2012-05-15
申请号：US12965223
申请日：2010-12-10
Applicant: Wayne A. Loeb , Alireza Shirvani-Mahdavi
Inventor： Wayne A. Loeb , Alireza Shirvani-Mahdavi
CPC classification number: H03F1/52 , H02H9/025 , H03F3/191 , H03F2200/231 , H03F2200/27 , H03F2200/435
Abstract: Systems, devices and techniques relating to power amplifier protection include, in some implementations, a circuit including: attenuation circuitry to couple with an output of detection circuitry that provides a protection signal and to couple with an input of power amplifier circuitry; turn off circuitry to couple with the power amplifier circuitry, the turn off circuitry configured to turn off the power amplifier circuitry responsive to the protection signal; and the attenuation circuitry configured to reduce a gain of the power amplifier circuitry responsive to the protection signal, the attenuation circuitry comprising a delay stage configured to continue attenuating an RF input signal of the power amplifier circuitry until after the power amplifier circuitry turns on.
Abstract translation: 在一些实施方式中，涉及功率放大器保护的系统，设备和技术包括：电路，包括：与提供保护信号并与功率放大器电路的输入耦合的检测电路的输出耦合的衰减电路; 关闭电路以与功率放大器电路耦合，所述关断电路被配置为响应于所述保护信号而关闭所述功率放大器电路; 并且所述衰减电路经配置以响应于所述保护信号而减小所述功率放大器电路的增益，所述衰减电路包括被配置为继续衰减所述功率放大器电路的RF输入信号的延迟级，直到所述功率放大器电路导通为止。
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