公开(公告)号：US20090088098A1

公开(公告)日：2009-04-02

申请号：US11864519

申请日：2007-09-28

申请人： Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

发明人： Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

IPC分类号： H04B1/04

CPC分类号： H03G3/3047 ,  H04B2001/0416

摘要： Embodiments of wireless devices and transmitters are provided, which perform embodiments of automatic gain control methods. The embodiments of wireless devices and transmitters include a ramp generator, a digital gain signal generator, a combiner, and a variable gain amplifier. The ramp generator is adapted to receive a gain control input signal and to generate a gain ramp signal based on the gain control input signal. The digital gain signal generator is adapted to generate and incorporate a gain arc into a digital gain signal. A combiner is adapted to receive and combine a digital input signal with the digital gain signal, to generate a pre-compensated digital signal. The variable gain amplifier is adapted to apply gains indicated in the gain ramp signal to a pre-adjusted analog signal, which is generated based on the pre-compensated digital signal, in order to generate a gain-adjusted analog signal.

摘要翻译： 提供了无线设备和发射机的实施例，其执行自动增益控制方法的实施例。 无线设备和发射机的实施例包括斜坡发生器，数字增益信号发生器，组合器和可变增益放大器。 斜坡发生器适于接收增益控制输入信号并且基于增益控制输入信号产生增益斜坡信号。 数字增益信号发生器适于产生并将增益电弧并入数字增益信号中。 组合器适于接收和组合数字输入信号与数字增益信号，以产生预先补偿的数字信号。 可变增益放大器适于将增益斜坡信号中指示的增益应用于基于预补偿数字信号产生的预调节模拟信号，以便产生经增益调整的模拟信号。

公开(公告)号：US07805116B2

公开(公告)日：2010-09-28

申请号：US11864519

申请日：2007-09-28

申请人： Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

发明人： Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

IPC分类号： H01Q11/12 ,  H04B1/04

CPC分类号： H03G3/3047 ,  H04B2001/0416

摘要： Embodiments of wireless devices and transmitters are provided, which perform embodiments of automatic gain control methods. The embodiments of wireless devices and transmitters include a ramp generator, a digital gain signal generator, a combiner, and a variable gain amplifier. The ramp generator is adapted to receive a gain control input signal and to generate a gain ramp signal based on the gain control input signal. The digital gain signal generator is adapted to generate and incorporate a gain arc into a digital gain signal. A combiner is adapted to receive and combine a digital input signal with the digital gain signal, to generate a pre-compensated digital signal. The variable gain amplifier is adapted to apply gains indicated in the gain ramp signal to a pre-adjusted analog signal, which is generated based on the pre-compensated digital signal, in order to generate a gain-adjusted analog signal.

摘要翻译： 提供了无线设备和发射机的实施例，其执行自动增益控制方法的实施例。 无线设备和发射机的实施例包括斜坡发生器，数字增益信号发生器，组合器和可变增益放大器。 斜坡发生器适于接收增益控制输入信号并且基于增益控制输入信号产生增益斜坡信号。 数字增益信号发生器适于产生并将增益电弧并入数字增益信号中。 组合器适于接收和组合数字输入信号与数字增益信号，以产生预先补偿的数字信号。 可变增益放大器适于将增益斜坡信号中指示的增益应用于基于预补偿数字信号产生的预调节模拟信号，以便产生经增益调整的模拟信号。

公开(公告)号：US08204456B2

公开(公告)日：2012-06-19

申请号：US12882498

申请日：2010-09-15

申请人： Bing Xu ,  Clive Tang ,  Mahibur Rahman

发明人： Bing Xu ,  Clive Tang ,  Mahibur Rahman

IPC分类号： H04B1/04

CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H03F3/24 ,  H04B2001/0425

摘要： In accordance with some embodiments of the present disclosure, a method may include digitally pre-distorting a digital baseband signal with an opposite phase of a C-IM3 distortion term such that the pre-distortion and C-IM3 distortion cancel each other out in a transmitter. The method may also include digitally conditioning the pre-distorted digital signal in order to provide a flat amplitude response of a composite filter comprising a baseband filter and a digital half-band filter of the transmitter, and to provide a linear phase response for the composite filter.

摘要翻译： 根据本公开的一些实施例，一种方法可以包括以C-IM3失真项的相反相数字预失真数字基带信号，使得预失真和C-IM3失真在一个 发射机。 该方法还可以包括对预失真的数字信号进行数字调节，以便提供包括发射机的基带滤波器和数字半带滤波器的复合滤波器的平坦振幅响应，并且为复合信号提供线性相位响应 过滤。

公开(公告)号：US20120064847A1

公开(公告)日：2012-03-15

申请号：US12882498

申请日：2010-09-15

申请人： Bing Xu ,  Clive Tang ,  Mahibur Rahman

发明人： Bing Xu ,  Clive Tang ,  Mahibur Rahman

IPC分类号： H04B1/04

CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H03F3/24 ,  H04B2001/0425

摘要： In accordance with some embodiments of the present disclosure, a method may include digitally pre-distorting a digital baseband signal with an opposite phase of a C-IM3 distortion term such that the pre-distortion and C-IM3 distortion cancel each other out in a transmitter. The method may also include digitally conditioning the pre-distorted digital signal in order to provide a flat amplitude response of a composite filter comprising a baseband filter and a digital half-band filter of the transmitter, and to provide a linear phase response for the composite filter.

摘要翻译： 根据本公开的一些实施例，一种方法可以包括以C-IM3失真项的相反相数字预失真数字基带信号，使得预失真和C-IM3失真在一个 发射机。 该方法还可以包括对预失真的数字信号进行数字调节，以便提供包括发射机的基带滤波器和数字半带滤波器的复合滤波器的平坦振幅响应，并且为复合信号提供线性相位响应 过滤。

公开(公告)号：US20090285330A1

公开(公告)日：2009-11-19

申请号：US12119618

申请日：2008-05-13

申请人： Pravin Premakanthan ,  Bing Xu

发明人： Pravin Premakanthan ,  Bing Xu

IPC分类号： H04L25/49

CPC分类号： H04L27/368 ,  H03G3/3047 ,  H04B17/13 ,  H04B17/14

摘要： Embodiments include transmitters, wireless devices, and methods for performing loop delay and gain control. In a transmitter, a gain application element receives and combines digital input samples and a digital gain signal to generate gain-compensated digital samples. A power amplifier receives and amplifies an analog version of the gain-compensated digital samples to generate an antenna output signal. A feedback path generates an analog feedback signal from the antenna output signal, to produce a sequence of digital feedback samples from the analog feedback signal, and generates the digital gain signal from the sequence of digital feedback samples and a loop gain estimate. A loop delay and gain calculator calculates a loop delay estimate from the gain-compensated digital samples and the sequence of digital feedback samples, and calculates the loop gain estimate using the loop delay estimate, the gain-compensated digital samples, and the sequence of digital feedback samples.

摘要翻译： 实施例包括用于执行环路延迟和增益控制的发射机，无线设备和方法。 在发射机中，增益应用元件接收并组合数字输入采样和数字增益信号以产生增益补偿的数字样本。 功率放大器接收并放大增益补偿数字采样的模拟版本，以产生天线输出信号。 反馈路径从天线输出信号产生模拟反馈信号，以产生来自模拟反馈信号的数字反馈采样序列，并从数字反馈采样序列和环路增益估计中产生数字增益信号。 环路延迟和增益计算器从增益补偿数字样本和数字反馈采样序列中计算出一个环路延迟估计，并使用环路延迟估计，增益补偿数字采样和数字序列序列来计算环路增益估计 反馈样本。

公开(公告)号：US08938026B2

公开(公告)日：2015-01-20

申请号：US13053966

申请日：2011-03-22

申请人： Pravin Premakanthan ,  Bing Xu ,  Mark Kirschenmann ,  Amit Bavisi ,  Daniel Schwartz ,  Mahib Rahman

发明人： Pravin Premakanthan ,  Bing Xu ,  Mark Kirschenmann ,  Amit Bavisi ,  Daniel Schwartz ,  Mahib Rahman

IPC分类号： H04L25/03 ,  H04B1/04 ,  H04B1/52

CPC分类号： H04B1/0053 ,  H04B1/04 ,  H04B1/0458 ,  H04B1/40 ,  H04B1/525

摘要： In accordance with some embodiments of the present disclosure, a control path for a wireless communication device may include a radio frequency coupler having a coupled port and a terminated port, the radio frequency coupler configured to couple at least a portion of a transmission power of a transmission line coupled to the antenna tuner such that the coupled port carries a first signal indicative of an incident power transmitted to an antenna coupled to the antenna tuner and the terminated port carries a second signal indicative of a reflected power reflected by the antenna. the control path may also include a control module configured to communicate the one or more control signals to the antenna tuner for controlling the impedance of the antenna tuner based at least on the first signal and the second signal.

摘要翻译： 根据本公开的一些实施例，用于无线通信设备的控制路径可以包括具有耦合端口和端接端口的射频耦合器，所述射频耦合器被配置为耦合至少一部分传输功率 传输线耦合到天线调谐器，使得耦合端口承载指示发射到耦合到天线调谐器的天线的入射功率的第一信号，并且端接端口承载指示由天线反射的反射功率的第二信号。 所述控制路径还可以包括控制模块，所述控制模块被配置为将所述一个或多个控制信号传送到所述天线调谐器，用于至少基于所述第一信号和所述第二信号来控制所述天线调谐器的阻抗。

公开(公告)号：US08538354B2

公开(公告)日：2013-09-17

申请号：US13079473

申请日：2011-04-04

申请人： Bing Xu ,  Pravin Premakanthan

发明人： Bing Xu ,  Pravin Premakanthan

IPC分类号： H04B1/04 ,  H01Q11/12 ,  H03F3/68 ,  H03G3/00 ,  H03G3/20

CPC分类号： H03G3/3047

摘要： In accordance with the present disclosure, disadvantages and problems associated with controlling signal transmission of a wireless communication device may be reduced. In accordance with an example embodiment of the present disclosure a method for controlling transmission of a wireless communication signal comprises sensing one or more signals indicative of a power level of a wireless communication signal. The power level of the wireless communication signal is amplified by a power amplifier according to an amplifier control signal. The method further comprises determining a change in the power level based on the one or more signals indicative of the power level. The change is associated with one or more perturbations of the amplifier control signal. The method also comprises adjusting transmission of the wireless communication signal according to the change in the power level.

摘要翻译： 根据本公开，可以减少与控制无线通信设备的信号传输相关联的缺点和问题。 根据本公开的示例实施例，用于控制无线通信信号的传输的方法包括感测指示无线通信信号的功率电平的一个或多个信号。 根据放大器控制信号，功率放大器对无线通信信号的功率电平进行放大。 该方法还包括基于指示功率电平的一个或多个信号确定功率电平的变化。 该变化与放大器控制信号的一个或多个扰动相关。 该方法还包括根据功率电平的变化调整无线通信信号的传输。

公开(公告)号：US07778154B2

公开(公告)日：2010-08-17

申请号：US12054517

申请日：2008-03-25

申请人： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

发明人： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

IPC分类号： H04J7/00

CPC分类号： H04B1/0475 ,  H03G3/3042 ,  H04B2001/0416 ,  H04B2215/061

摘要： A technique of operating a communication device includes identifying a signal null associated with a signal to be transmitted on a first communication channel. A channel gain of the first communication channel is adjusted at a time that substantially coincides with the signal null to reduce transient noise spectrum coupled from the first communication channel to one or more second communication channels.

摘要翻译： 操作通信设备的技术包括识别与要在第一通信信道上发送的信号相关联的信号零。 第一通信信道的信道增益在与信号为零的基本一致的时刻被调整，以减少从第一通信信道耦合到一个或多个第二通信信道的瞬态噪声频谱。

公开(公告)号：US20090245288A1

公开(公告)日：2009-10-01

申请号：US12054517

申请日：2008-03-25

申请人： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

发明人： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

IPC分类号： H04J13/00

CPC分类号： H04B1/0475 ,  H03G3/3042 ,  H04B2001/0416 ,  H04B2215/061

摘要： A technique of operating a communication device includes identifying a signal null associated with a signal to be transmitted on a first communication channel. A channel gain of the first communication channel is adjusted at a time that substantially coincides with the signal null to reduce transient noise spectrum coupled from the first communication channel to one or more second communication channels.

摘要翻译： 操作通信设备的技术包括识别与要在第一通信信道上发送的信号相关联的信号零。 第一通信信道的信道增益在与信号为零的基本一致的时刻被调整，以减少从第一通信信道耦合到一个或多个第二通信信道的瞬态噪声频谱。

公开(公告)号：US20120252520A1

公开(公告)日：2012-10-04

申请号：US13079473

申请日：2011-04-04

申请人： Bing Xu ,  Pravin Premakanthan

发明人： Bing Xu ,  Pravin Premakanthan

IPC分类号： H04B7/00

CPC分类号： H03G3/3047

摘要： In accordance with the present disclosure, disadvantages and problems associated with controlling signal transmission of a wireless communication device may be reduced. In accordance with an example embodiment of the present disclosure a method for controlling transmission of a wireless communication signal comprises sensing one or more signals indicative of a power level of a wireless communication signal. The power level of the wireless communication signal is amplified by a power amplifier according to an amplifier control signal. The method further comprises determining a change in the power level based on the one or more signals indicative of the power level. The change is associated with one or more perturbations of the amplifier control signal. The method also comprises adjusting transmission of the wireless communication signal according to the change in the power level.

摘要翻译： 根据本公开，可以减少与控制无线通信设备的信号传输相关联的缺陷和问题。 根据本公开的示例实施例，用于控制无线通信信号的传输的方法包括感测指示无线通信信号的功率电平的一个或多个信号。 根据放大器控制信号，功率放大器对无线通信信号的功率电平进行放大。 该方法还包括基于指示功率电平的一个或多个信号确定功率电平的变化。 该变化与放大器控制信号的一个或多个扰动相关。 该方法还包括根据功率电平的变化调整无线通信信号的传输。