公开(公告)号：US20120243579A1

公开(公告)日：2012-09-27

申请号：US13053966

申请日：2011-03-22

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

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

IPC: H04B1/38

CPC classification number: H04B1/0053 ,  H04B1/04 ,  H04B1/0458 ,  H04B1/40 ,  H04B1/525

Abstract: 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.

Abstract translation: 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：US08805305B2

公开(公告)日：2014-08-12

申请号：US13169661

申请日：2011-06-27

Applicant: Pravin Premakanthan ,  Michael Addison Milyard ,  Mahibur Rahman

Inventor： Pravin Premakanthan ,  Michael Addison Milyard ,  Mahibur Rahman

IPC: H03C1/62 ,  H04B17/00

CPC classification number: H03G3/3042

Abstract: According to the present disclosure, a method for tracking power levels of a wireless communications signal comprises receiving a feedback signal indicative of a power level of a wireless communication signal associated transmitted from a transmit path to an antenna of a wireless communication element. The method further comprises receiving a reference signal associated with a digital signal converted into the wireless communication signal. Additionally, the method comprises determining a gain of the feedback signal with respect to the reference signal and determining a gain error based on the determined gain and an expected gain.

Abstract translation: 根据本公开，一种用于跟踪无线通信信号的功率电平的方法包括：接收指示从发送路径发送到无线通信元件的天线的无线通信信号的功率电平的反馈信号。 该方法还包括接收与被转换成无线通信信号的数字信号相关联的参考信号。 另外，该方法包括相对于参考信号确定反馈信号的增益，并且基于所确定的增益和预期增益来确定增益误差。

公开(公告)号：US08538354B2

公开(公告)日：2013-09-17

申请号：US13079473

申请日：2011-04-04

Applicant: Bing Xu ,  Pravin Premakanthan

Inventor： Bing Xu ,  Pravin Premakanthan

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

CPC classification number: H03G3/3047

Abstract: 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.

Abstract translation: 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：US20120329512A1

公开(公告)日：2012-12-27

申请号：US13169661

申请日：2011-06-27

Applicant: Pravin Premakanthan ,  Michael Addison Milyard ,  Mahibur Rahman

Inventor： Pravin Premakanthan ,  Michael Addison Milyard ,  Mahibur Rahman

IPC: H04W52/00

CPC classification number: H03G3/3042

Abstract: According to the present disclosure, a method for tracking power levels of a wireless communications signal comprises receiving a feedback signal indicative of a power level of a wireless communication signal associated transmitted from a transmit path to an antenna of a wireless communication element. The method further comprises receiving a reference signal associated with a digital signal converted into the wireless communication signal. Additionally, the method comprises determining a gain of the feedback signal with respect to the reference signal and determining a gain error based on the determined gain and an expected gain.

Abstract translation: 根据本公开，一种用于跟踪无线通信信号的功率电平的方法包括：接收指示从发送路径发送到无线通信元件的天线的无线通信信号的功率电平的反馈信号。 该方法还包括接收与被转换成无线通信信号的数字信号相关联的参考信号。 另外，该方法包括相对于参考信号确定反馈信号的增益，并且基于所确定的增益和预期增益来确定增益误差。

公开(公告)号：US07805116B2

公开(公告)日：2010-09-28

申请号：US11864519

申请日：2007-09-28

Applicant: Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

Inventor： Bing Xu ,  Pravin Premakanthan ,  Clive Tang ,  Mahibur Rahman

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H03G3/3047 ,  H04B2001/0416

Abstract: 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.

Abstract translation: 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：US07778154B2

公开(公告)日：2010-08-17

申请号：US12054517

申请日：2008-03-25

Applicant: Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

Inventor： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

IPC: H04J7/00

CPC classification number: H04B1/0475 ,  H03G3/3042 ,  H04B2001/0416 ,  H04B2215/061

Abstract: 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.

Abstract translation: 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

Applicant: Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

Inventor： Bing Xu ,  Pravin Premakanthan ,  Daniel B. Schwartz

IPC: H04J13/00

CPC classification number: H04B1/0475 ,  H03G3/3042 ,  H04B2001/0416 ,  H04B2215/061

Abstract: 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.

Abstract translation: 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：US20090088102A1

公开(公告)日：2009-04-02

申请号：US12249649

申请日：2008-10-10

Applicant: Jiangbo Gan ,  Srinivasa R. Bommareddy ,  Pravin Premakanthan

Inventor： Jiangbo Gan ,  Srinivasa R. Bommareddy ,  Pravin Premakanthan

IPC: H04B1/04 ,  H03G3/20

CPC classification number: H04B1/0475 ,  H03G3/3036

Abstract: A gain control process (1102) executed at a transmitter (500) generates (1314) a gain ramp signal (1206) having a delay component (1224) and a gain component (1226). The process (1102) further generates (1304) and incorporates (1306) a gain arc (1202) into a digital signal to form a digital gain signal (1204) having a digital gain change (1218). A combiner (502) combines a digital input signal (512) with the digital gain signal (1204) to generate a pre-compensated digital signal (516). A variable gain amplifier (508) applies a sequence of gains (1234,1236,1238,1240,1242) in the gain component (1126) of the gain ramp signal (1206) to a pre-adjusted analog signal (520) in order to generate a gain-adjusted analog signal (524). Application of the gain component (1126) and the digital gain change (1218) occurs when a portion (1212) of the gain arc (1202) indicates a low instantaneous signal power at an antenna (106) in order to reduce ACLR degradation.

Abstract translation: 在发射机（500）处执行的增益控制处理（1102）生成具有延迟分量（1224）和增益分量（1226）的增益斜坡信号（1206）（1314）。 过程（1102）进一步产生（1304）并且将增益电弧（1202）并入（1306）到数字信号中以形成具有数字增益变化的数字增益信号（1204）（1218）。 组合器（502）将数字输入信号（512）与数字增益信号（1204）组合以产生预补偿数字信号（516）。 可变增益放大器（508）将增益斜坡信号（1206）的增益分量（1126）中的增益序列（1234,1236,1238,1240,1242）按顺序应用于预调节的模拟信号（520） 以产生增益调整的模拟信号（524）。 当增益电弧（1202）的部分（1212）指示天线（106）处的低瞬时信号功率以便减少ACLR劣化时，发生增益分量（1126）和数字增益变化（1218）的应用。