公开(公告)号：US20090111414A1

公开(公告)日：2009-04-30

申请号：US11955201

申请日：2007-12-12

申请人： Gurkanwal Singh Sahota ,  Frederic Bossu ,  Ojas M. Choksi

发明人： Gurkanwal Singh Sahota ,  Frederic Bossu ,  Ojas M. Choksi

IPC分类号： H04B1/16

CPC分类号： H03D7/1441 ,  H03D7/165 ,  H03D7/166 ,  H03D2200/0084 ,  H03D2200/009

摘要： Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an embodiment, LO buffer and/or mixer size may be increased when a receiver operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver operates in a low gain mode. In an embodiment, LO buffer and mixer sizes are increased and decreased in lock step. Circuit topologies and control schemes for specific embodiments of LO buffers and mixers having adjustable size are disclosed.

摘要翻译： 公开了本地振荡器（LO）缓冲器和混频器的可选尺寸。 在一个实施例中，当接收机以高增益模式工作时，可以增加LO缓冲器和/或混频器的大小，而当接收器以低增益模式工作时，可以减小LO缓冲器和/或混频器的大小。 在一个实施例中，LO缓冲器和混合器尺寸在锁定步骤中增加和减小。 公开了具有可调节尺寸的LO缓冲器和混合器的具体实施例的电路拓扑和控制方案。

公开(公告)号：US07076266B2

公开(公告)日：2006-07-11

申请号：US10964404

申请日：2004-10-12

申请人： Gurkanwal Singh Sahota

发明人： Gurkanwal Singh Sahota

IPC分类号： H04B7/00

CPC分类号： H04W52/52 ,  H04B17/13

摘要： A technique for calibrating the open-loop transmit power of a wireless communication device overcomes the inherent nonlinearities in the gain control input of a variable gain amplifier (VGA). In one embodiment, a feedback circuit generates a signal indicative of the transmit power. This signal is compared with a desired transmit power level, which comprises an open-loop gain component and a closed-loop gain component. The desired transmit power level is compared with the actual transmit power level and an error signal is generated. The error signal is used to alter the gain of the VGA in the transmitter to thereby adjust the actual transmit power level to correspond with the desired transmit power level. In alternative embodiment, the receiver portion, which also contains a VGA, is pre-calibrated in a conventional manner. During a transmitter calibration process, the transmitter is coupled to the receiver input through a mixer and filter. The pre-calibrated receiver determines the actual transmit power level. The difference is used to generate error correction data to adjust for non linearities in the gain control input of the transmitter VGA.

公开(公告)号：US09143172B2

公开(公告)日：2015-09-22

申请号：US12544177

申请日：2009-08-19

申请人： Puay Hoe See ,  Aristotele Hadjichristos ,  Gurkanwal Singh Sahota

发明人： Puay Hoe See ,  Aristotele Hadjichristos ,  Gurkanwal Singh Sahota

IPC分类号： H03F3/04 ,  H04B1/04 ,  H03F1/56 ,  H03F3/24 ,  H03F3/72

CPC分类号： H04B1/0458 ,  H03F1/565 ,  H03F3/24 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/378 ,  H03F2200/387 ,  H03F2203/7209

摘要： Tunable matching circuits for power amplifiers are described. In an exemplary design, an apparatus may include a power amplifier and a tunable matching circuit. The power amplifier may amplify an input RF signal and provide an amplified RF signal. The tunable matching circuit may provide output impedance matching for the power amplifier, may receive the amplified RF signal and provide an output RF signal, and may be tunable based on at least one parameter effecting the operation of the power amplifier. The parameter(s) may include an envelope signal for the amplified RF signal, an average output power level of the output RF signal, a power supply voltage for the power amplifier, IC process variations, etc. The tunable matching circuit may include a series variable capacitor and/or a shunt variable capacitor. Each variable capacitor may be tunable based on a control generated based on the parameter(s).

摘要翻译： 描述了用于功率放大器的可调谐匹配电路。 在示例性设计中，设备可以包括功率放大器和可调谐匹配电路。 功率放大器可以放大输入RF信号并提供放大的RF信号。 可调谐匹配电路可以为功率放大器提供输出阻抗匹配，可以接收放大的RF信号并提供输出RF信号，并且可以基于影响功率放大器的操作的至少一个参数来调节。 参数可以包括放大的RF信号的包络信号，输出RF信号的平均输出功率电平，功率放大器的电源电压，IC过程变化等。可调谐匹配电路可以包括一系列 可变电容器和/或分流可变电容器。 每个可变电容器可以基于基于参数产生的控制来调节。

公开(公告)号：US20130231064A1

公开(公告)日：2013-09-05

申请号：US13411444

申请日：2012-03-02

申请人： Prasad Srinivasa Siva Gudem ,  Gurkanwal Singh Sahota ,  Li-Chung Chang ,  Christian Holenstein ,  Frederic Bossu

发明人： Prasad Srinivasa Siva Gudem ,  Gurkanwal Singh Sahota ,  Li-Chung Chang ,  Christian Holenstein ,  Frederic Bossu

IPC分类号： H04B1/38

CPC分类号： H04B1/0057 ,  H04B7/04

摘要： A wireless communication device configured for receiving a multiple carrier signal is described. The wireless communication device includes a single-chip signal splitting carrier aggregation receiver architecture. The single-chip signal splitting carrier aggregation receiver architecture includes a primary antenna, a secondary antenna and a transceiver chip. The single-chip signal splitting carrier aggregation receiver architecture reuses a simultaneous hybrid dual receiver path.

摘要翻译： 描述了被配置为接收多载波信号的无线通信设备。 无线通信设备包括单芯片信号分离载波聚合接收机架构。 单芯片信号分离载波聚合接收机架构包括主天线，辅助天线和收发芯片。 单芯片信号分离载波聚合接收机架构重用同步混合双接收机路径。

公开(公告)号：US08457570B2

公开(公告)日：2013-06-04

申请号：US10964118

申请日：2004-10-12

申请人： Gurkanwal Singh Sahota

发明人： Gurkanwal Singh Sahota

IPC分类号： H01Q11/12 ,  H04K3/00

CPC分类号： H04W52/52 ,  H04B17/13

摘要： A technique for calibrating the open-loop transmit power of a wireless communication device overcomes the inherent nonlinearities in the gain control input of a variable gain amplifier (VGA). In one embodiment, a feedback circuit generates a signal indicative of the transmit power. This signal is compared with a desired transmit power level, which comprises an open-loop gain component and a closed-loop gain component. The desired transmit power level is compared with the actual transmit power level and an error signal is generated. The error signal is used to alter the gain of the VGA in the transmitter to thereby adjust the actual transmit power level to correspond with the desired transmit power level. In alternative embodiment, the receiver portion, which also contains a VGA, is pre-calibrated in a conventional manner. During a transmitter calibration process, the transmitter is coupled to the receiver input through a mixer and filter. The pre-calibrated receiver determines the actual transmit power level. The difference is used to generate error correction data to adjust for non linearities in the gain control input of the transmitter VGA.

公开(公告)号：US20130094550A1

公开(公告)日：2013-04-18

申请号：US13364065

申请日：2012-02-01

申请人： Philip D. Coan ,  Paul J. Draxler ,  Roberto Rimini ,  Thomas D. Marra ,  Gurkanwal Singh Sahota ,  Steven C. Ciccarelli ,  Shrenik Patel

发明人： Philip D. Coan ,  Paul J. Draxler ,  Roberto Rimini ,  Thomas D. Marra ,  Gurkanwal Singh Sahota ,  Steven C. Ciccarelli ,  Shrenik Patel

IPC分类号： H04L25/49 ,  H04B1/38

CPC分类号： H04L27/368 ,  H03F1/3247 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2201/3212 ,  H03F2203/7221 ,  H03F2203/7236 ,  H04B7/0825

摘要： A modem is described. The modem includes a transmitter. The transmitter includes a digital pre-distortion module and a power amplifier. The modem also includes one or more selected shared receivers. The one or more selected shared receivers generate a feedback signal for the digital pre-distortion module. The modem further includes a feedback switch. The feedback switch selectively couples the one or more selected shared receivers to an output of the transmitter.

摘要翻译： 调制解调器被描述。 调制解调器包括发射机。 发射机包括数字预失真模块和功率放大器。 调制解调器还包括一个或多个选择的共享接收器。 一个或多个选择的共享接收器产生用于数字预失真模块的反馈信号。 调制解调器还包括反馈开关。 反馈开关将一个或多个选择的共享接收机选择性地耦合到发射机的输出。

公开(公告)号：US08237509B2

公开(公告)日：2012-08-07

申请号：US11852946

申请日：2007-09-10

申请人： Tae Wook Kim ,  Guy Klemens ,  Kenneth Charles Barnett ,  Susanta Sangupta ,  Gurkanwal Singh Sahota

发明人： Tae Wook Kim ,  Guy Klemens ,  Kenneth Charles Barnett ,  Susanta Sangupta ,  Gurkanwal Singh Sahota

IPC分类号： H03F3/04

CPC分类号： H03F1/223 ,  H03F3/195 ,  H03F3/45188 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/168 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/45034 ,  H03F2203/45058 ,  H03F2203/45138 ,  H03F2203/45296 ,  H03F2203/45301 ,  H03F2203/45316 ,  H03F2203/45396 ,  H03F2203/7239 ,  H03G1/0017 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/3052 ,  H03G3/3078

摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.

摘要翻译： 描述了具有集成滤波器（例如，LNA）的放大器。 在一种设计中，放大器可以包括增益级，滤波级和缓冲级。 增益级可以为输入信号提供信号放大。 滤波器级可以为输入信号提供滤波。 缓冲级可以缓冲来自滤波级的滤波信号。 放大器还可以包括第二滤波器级和第二缓冲级。 第二滤波器级可以为输入信号提供额外的滤波。 第二缓冲级可以缓冲来自第二滤波级的第二滤波信号。 所有级可以堆叠并耦合在电源电压和电路接地之间。 滤波器级可以实现椭圆形低通滤波器。 每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

公开(公告)号：US08059748B2

公开(公告)日：2011-11-15

申请号：US11857929

申请日：2007-09-19

申请人： Puay Hoe See ,  Gurkanwal Singh Sahota ,  Bo Sun ,  Gary John Ballantyne ,  William Ronald Panton ,  Zae Yong Choi

发明人： Puay Hoe See ,  Gurkanwal Singh Sahota ,  Bo Sun ,  Gary John Ballantyne ,  William Ronald Panton ,  Zae Yong Choi

IPC分类号： H04K1/02 ,  H04B1/04

CPC分类号： H04L27/0008 ,  H03C3/0916 ,  H03C3/0975 ,  H03C5/00 ,  H03F1/3241 ,  H03F1/3252 ,  H04B1/0483 ,  H04B2001/0425 ,  H04L27/361 ,  H04L27/362

摘要： Transmitters supporting multiple modulation modes and/or multiple frequency bands are described. A transmitter may perform large signal polar modulation, small signal polar modulation, and/or quadrature modulation, which may support different modulation schemes and systems. Circuit blocks may be shared by the different modulation modes to reduce cost and power. For example, a single modulator and a single power amplifier may be used for small signal polar modulation and quadrature modulation. The transmitter may apply pre-distortion to improve performance, to allow a power amplifier to support multiple frequency bands, to allow the power amplifier to operate at higher output power levels, etc. Envelope and phase distortions due to non-linearity of the power amplifier may be characterized for different input levels and different bands and stored at the transmitter. Thereafter, envelope and phase signals may be pre-distorted based on the stored characterizations to compensate for non-linearity of the power amplifier.

摘要翻译： 描述了支持多个调制模式和/或多个频带的发射机。 发射机可以执行可能支持不同调制方案和系统的大信号极性调制，小信号极化调制和/或正交调制。 电路块可以由不同的调制模式共享以降低成本和功率。 例如，单个调制器和单个功率放大器可以用于小信号极性调制和正交调制。 发射机可以应用预失真来提高性能，以允许功率放大器支持多个频带，以允许功率放大器在较高的输出功率电平下工作等。由功率放大器的非线性引起的包络和相位失真 可以表征为不同的输入电平和不同的频带并存储在发射机。 此后，包络和相位信号可以基于存储的特征来预失真，以补偿功率放大器的非线性。

公开(公告)号：US20100308933A1

公开(公告)日：2010-12-09

申请号：US12544177

申请日：2009-08-19

申请人： Puay Hoe See ,  Aristotele Hadjichristos ,  Gurkanwal Singh Sahota

发明人： Puay Hoe See ,  Aristotele Hadjichristos ,  Gurkanwal Singh Sahota

IPC分类号： H03H7/38

CPC分类号： H04B1/0458 ,  H03F1/565 ,  H03F3/24 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/378 ,  H03F2200/387 ,  H03F2203/7209

摘要： Tunable matching circuits for power amplifiers are described. In an exemplary design, an apparatus may include a power amplifier and a tunable matching circuit. The power amplifier may amplify an input RF signal and provide an amplified RF signal. The tunable matching circuit may provide output impedance matching for the power amplifier, may receive the amplified RF signal and provide an output RF signal, and may be tunable based on at least one parameter effecting the operation of the power amplifier. The parameter(s) may include an envelope signal for the amplified RF signal, an average output power level of the output RF signal, a power supply voltage for the power amplifier, IC process variations, etc. The tunable matching circuit may include a series variable capacitor and/or a shunt variable capacitor. Each variable capacitor may be tunable based on a control generated based on the parameter(s).

摘要翻译： 描述了用于功率放大器的可调谐匹配电路。 在示例性设计中，设备可以包括功率放大器和可调谐匹配电路。 功率放大器可以放大输入RF信号并提供放大的RF信号。 可调谐匹配电路可以为功率放大器提供输出阻抗匹配，可以接收放大的RF信号并提供输出RF信号，并且可以基于影响功率放大器的操作的至少一个参数来调节。 参数可以包括放大的RF信号的包络信号，输出RF信号的平均输出功率电平，功率放大器的电源电压，IC过程变化等。可调谐匹配电路可以包括一系列 可变电容器和/或分流可变电容器。 每个可变电容器可以基于基于参数产生的控制来调节。

公开(公告)号：US20100291888A1

公开(公告)日：2010-11-18

申请号：US12575414

申请日：2009-10-07

申请人： Aristotele Hadjichristos ,  Puay Hoe See ,  Babak Nejati ,  Guy Klemens ,  Norman Frederick, JR. ,  Gurkanwal Singh Sahota ,  Marco Cassia ,  Nathan Pletcher ,  Yu Zhao ,  Thomas Myers

发明人： Aristotele Hadjichristos ,  Puay Hoe See ,  Babak Nejati ,  Guy Klemens ,  Norman Frederick, JR. ,  Gurkanwal Singh Sahota ,  Marco Cassia ,  Nathan Pletcher ,  Yu Zhao ,  Thomas Myers

IPC分类号： H04B1/04

CPC分类号： H04B1/0458 ,  H03F1/0277 ,  H03F3/24 ,  H03F3/72 ,  H03F2203/7236 ,  H04B1/0483

摘要： A multi-mode multi-band power amplifier (PA) module is described. In an exemplary design, the PA module includes multiple power amplifiers, multiple matching circuits, and a set of switches. Each power amplifier provides power amplification for its input signal when selected. Each matching circuit provides impedance matching and filtering for its power amplifier and provides a respective output signal. The switches configure the power amplifiers to support multiple modes, with each mode being for a particular radio technology. Each power amplifier supports at least two modes. The PA module may further include a driver amplifier and an additional matching circuit. The driver amplifier amplifies an input signal and provides an amplified signal to the power amplifiers. The additional matching circuit combines the outputs of other matching circuits and provides an output signal with higher output power. The driver amplifier and the power amplifiers can support multiple output power levels.

摘要翻译： 描述了多模式多频带功率放大器（PA）模块。 在示例性设计中，PA模块包括多个功率放大器，多个匹配电路和一组开关。 每个功率放大器在选择时为其输入信号提供功率放大。 每个匹配电路为其功率放大器提供阻抗匹配和滤波，并提供相应的输出信号。 这些开关配置功率放大器以支持多种模式，每种模式都适用于特定的无线电技术。 每个功率放大器至少支持两种模式。 PA模块还可以包括驱动器放大器和附加匹配电路。 驱动器放大器放大输入信号并向功率放大器提供放大的信号。 附加匹配电路组合其他匹配电路的输出，并提供具有较高输出功率的输出信号。 驱动器放大器和功率放大器可以支持多个输出功率电平。