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21. 发明授权

US09100921B2 Transmit power measurement and control methods and apparatus 有权
标题翻译：发射功率测量与控制方法及装置
公开(公告)号：US09100921B2
公开(公告)日：2015-08-04
申请号：US13590008
申请日：2012-08-20
申请人： Bing Xu , Mahibur Rahman , Chunmig Zhao
发明人： Bing Xu , Mahibur Rahman , Chunmig Zhao
IPC分类号： H04B1/04 , H04W52/08 , H04W52/10 , H04W52/52 , H04W52/26 , H04L27/00
CPC分类号： H04W52/08 , H04L27/0012 , H04W52/10 , H04W52/262 , H04W52/52
摘要： Embodiments include methods and apparatus for performing transmit power control. A gain application element receives a sequence of digital input samples and a digital gain signal, and combines the digital gain signal with the digital input samples to generate a sequence of gain-compensated digital samples. A power amplifier receives and amplifies an analog version of the gain-compensated digital samples in order to generate an antenna output signal. A feedback path generates an analog feedback signal from the antenna output signal, produces a sequence of digital feedback samples from the analog feedback signal, and generates difference values based on the digital feedback samples. When a specified type of constant modulus symbol is represented in the antenna output symbol, the feedback path accumulates the difference values into an accumulated error value, and produces the digital gain signal from the accumulated error value.
摘要翻译：实施例包括用于执行发射功率控制的方法和装置。增益应用元件接收数字输入采样序列和数字增益信号，并将数字增益信号与数字输入采样相结合，以生成增益补偿数字采样序列。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，从模拟反馈信号产生一系列数字反馈采样，并根据数字反馈采样产生差值。当在天线输出符号中表示指定类型的常数符号符号时，反馈路径将差值累积为累积误差值，并从积累的误差值产生数字增益信号。

22. 发明申请

US20130045773A1 TRANSMIT POWER MEASUREMENT AND CONTROL METHODS AND APPARATUS 审中-公开
标题翻译：发射功率测量和控制方法和装置
公开(公告)号：US20130045773A1
公开(公告)日：2013-02-21
申请号：US13590008
申请日：2012-08-20
申请人： Bing Xu , Mahibur Rahman , Chunmig Zhao
发明人： Bing Xu , Mahibur Rahman , Chunmig Zhao
IPC分类号： H04W52/10 , H04W88/02 , H04W52/08
CPC分类号： H04W52/08 , H04L27/0012 , H04W52/10 , H04W52/262 , H04W52/52
摘要： Embodiments include methods and apparatus for performing transmit power control. A gain application element receives a sequence of digital input samples and a digital gain signal, and combines the digital gain signal with the digital input samples to generate a sequence of gain-compensated digital samples. A power amplifier receives and amplifies an analog version of the gain-compensated digital samples in order to generate an antenna output signal. A feedback path generates an analog feedback signal from the antenna output signal, produces a sequence of digital feedback samples from the analog feedback signal, and generates difference values based on the digital feedback samples. When a specified type of constant modulus symbol is represented in the antenna output symbol, the feedback path accumulates the difference values into an accumulated error value, and produces the digital gain signal from the accumulated error value.
摘要翻译：实施例包括用于执行发射功率控制的方法和装置。增益应用元件接收数字输入采样序列和数字增益信号，并将数字增益信号与数字输入采样相结合，以生成增益补偿数字采样序列。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，从模拟反馈信号产生一系列数字反馈采样，并根据数字反馈采样产生差值。当在天线输出符号中表示指定类型的常数符号符号时，反馈路径将差值累积为累积误差值，并从积累的误差值产生数字增益信号。

23. 发明申请

US20130016619A1 SYSTEM AND METHOD FOR CONTROLLING CURRENT TO CERTAIN COMPONENTS OF A WIRELESS COMMUNICATION DEVICE 有权
标题翻译：用于控制无线通信设备的某些组件的电流的系统和方法
公开(公告)号：US20130016619A1
公开(公告)日：2013-01-17
申请号：US13184180
申请日：2011-07-15
申请人： Mahibur Rahman , Omid Oliaei , Jorge Ivonnet
发明人： Mahibur Rahman , Omid Oliaei , Jorge Ivonnet
IPC分类号： H04W24/00
CPC分类号： H04B1/10 , H04B1/0046
摘要： A method may include: determining a signal strength of a signal in a receive path of a wireless communication element, the receive path configured to receive a wireless communication signal and convert the wireless communication signal into a digital signal based at least on an oscillator signal; selecting a current mode from at least one of a first current mode and a second current mode for the wireless communication element based at least on the signal strength; communicating a control signal to the receive path indicative of the current mode; modifying one or more operational parameters of the receive path such that the receive path consumes a different amount of current in each of the current modes.
摘要翻译：方法可以包括：确定无线通信元件的接收路径中的信号的信号强度，所述接收路径被配置为接收无线通信信号，并且至少基于振荡器信号将无线通信信号转换为数字信号; 至少基于信号强度从无线通信元件的第一当前模式和第二当前模式中的至少一个中选择当前模式; 将控制信号传送到指示当前模式的接收路径; 修改接收路径的一个或多个操作参数，使得接收路径在每个当前模式中消耗不同的电流量。

24. 发明授权

US07929650B2 AGC for narrowband receivers 有权
标题翻译： AGC用于窄带接收机
公开(公告)号：US07929650B2
公开(公告)日：2011-04-19
申请号：US11252525
申请日：2005-10-18
申请人： Charles L. Sobchak , Mahibur Rahman
发明人： Charles L. Sobchak , Mahibur Rahman
IPC分类号： H04L27/08
CPC分类号： H04L27/3809 , H03M3/486 , H03M3/49
摘要： An automatic gain control (AGC) system for a receiver and corresponding method facilitate AGC in a receiver. The automatic gain control system includes an on-channel signal detector 123 configured to provide an on-channel signal level indication corresponding to a narrow band on-channel signal and a wideband signal detector 121 configured to provide a wideband signal level indication corresponding to a wideband signal, where the wideband signal includes the narrow band on-channel signal. Further included is a controller 149 that is coupled to the wideband signal level indication and the on-channel signal level indication and that is configured to provide a gain control signal corresponding to the wideband signal level and one or more of a plurality of states of the receiver.
摘要翻译：用于接收机的自动增益控制（AGC）系统和相应的方法便于接收机中的AGC。自动增益控制系统包括通道信号检测器123，其被配置为提供对应于窄带通道信号的通道信号电平指示和宽带信号检测器121，宽带信号检测器121被配置为提供对应于宽带的宽带信号电平指示信号，其中宽带信号包括窄带通道信号。还包括控制器149，其被耦合到宽带信号电平指示和通道信号电平指示，并被配置为提供对应于宽带信号电平的增益控制信号和多个状态中的一个或多个接收器。

25. 发明授权

US07912437B2 Radio frequency receiver having dynamic bandwidth control and method of operation 有权
标题翻译：具有动态带宽控制和操作方法的射频接收机
公开(公告)号：US07912437B2
公开(公告)日：2011-03-22
申请号：US11621355
申请日：2007-01-09
申请人： Mahibur Rahman , Charles LeRoy Sobchak
发明人： Mahibur Rahman , Charles LeRoy Sobchak
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H04L27/0002 , H04L27/22
摘要： A radio frequency receiver (102) includes at least one amplifier (108, 114 and 122) for amplifying a signal received by the radio frequency receiver, an automatic gain control system (158) for controlling a gain of the at least one amplifier, and a direct current offset correction filter (142) for reducing any direct current component of the signal amplified by the at least one amplifier. The direct current offset correction filter has a bandwidth that is dynamically controlled by a change in the gain of the at least one amplifier. The radio frequency receiver also includes a digital automatic gain control unit (150) having a bandwidth that is dynamically controlled by the change in the gain of the at least one amplifier.
摘要翻译：射频接收器（102）包括用于放大由射频接收机接收的信号的至少一个放大器（108,114和122），用于控制至少一个放大器的增益的自动增益控制系统（158），以及用于减少由至少一个放大器放大的信号的任何直流分量的直流偏移校正滤波器（142）。直流偏移校正滤波器具有由至少一个放大器的增益的变化动态地控制的带宽。无线电频率接收机还包括一个数字自动增益控制单元（150），该数字自动增益控制单元具有由至少一个放大器的增益变化动态控制的带宽。

26. 发明申请

US20100113105A1 TRANSMIT POWER MEASUREMENT AND CONTROL METHODS AND APPARATUS 有权
标题翻译：发射功率测量和控制方法和装置
公开(公告)号：US20100113105A1
公开(公告)日：2010-05-06
申请号：US12262943
申请日：2008-10-31
申请人： Bing Xu , Mahibur Rahman , Chunming Zhao
发明人： Bing Xu , Mahibur Rahman , Chunming Zhao
IPC分类号： H04B1/38 , H01Q11/12 , H04B1/16
CPC分类号： H04W52/08 , H04L27/0012 , H04W52/10 , H04W52/262 , H04W52/52
摘要： Embodiments include methods and apparatus for performing transmit power control. A gain application element receives a sequence of digital input samples and a digital gain signal, and combines the digital gain signal with the digital input samples to generate a sequence of gain-compensated digital samples. A power amplifier receives and amplifies an analog version of the gain-compensated digital samples in order to generate an antenna output signal. A feedback path generates an analog feedback signal from the antenna output signal, produces a sequence of digital feedback samples from the analog feedback signal, and generates difference values based on the digital feedback samples. When a specified type of constant modulus symbol is represented in the antenna output symbol, the feedback path accumulates the difference values into an accumulated error value, and produces the digital gain signal from the accumulated error value.
摘要翻译：实施例包括用于执行发射功率控制的方法和装置。增益应用元件接收数字输入采样序列和数字增益信号，并将数字增益信号与数字输入采样相结合，以生成增益补偿数字采样序列。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，从模拟反馈信号产生一系列数字反馈采样，并根据数字反馈采样产生差值。当在天线输出符号中表示指定类型的常数符号符号时，反馈路径将差值累积为累积误差值，并从积累的误差值产生数字增益信号。

27. 发明授权

US07603094B2 DC offset correction for direct conversion receivers 有权
标题翻译：用于直接转换接收机的直流偏移校正
公开(公告)号：US07603094B2
公开(公告)日：2009-10-13
申请号：US11452457
申请日：2006-06-14
申请人： Mahibur Rahman , Charles L. Sobchak
发明人： Mahibur Rahman , Charles L. Sobchak
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04B1/30 , H03D3/008
摘要： A direct current (DC) offset correction system for a direct conversion receiver and corresponding receiver and methods facilitate reduction of DC offsets in such receivers. One method includes calibrating a DC offset correction system in a closed loop configuration over each of a plurality of gain settings to provide a plurality of offset data for an operating mode of the direct conversion receiver; selecting one of the plurality of offset data based on a current gain setting of the direct conversion receiver as supplied, e.g., by an AGC system; and operating the DC offset correction system in an open loop configuration using the one of the plurality of offset data to correct for a DC offset in the direct conversion receiver.
摘要翻译：用于直接转换接收机的直流（DC）偏移校正系统和相应的接收机和方法有助于减少这种接收机中的直流偏移。一种方法包括在多个增益设置中的每一个上校准闭环配置中的DC偏移校正系统，以提供用于直接转换接收机的操作模式的多个偏移数据; 基于例如由AGC系统提供的直接转换接收机的当前增益设置来选择多个偏移数据中的一个; 以及使用所述多个偏移数据中的所述多个偏移数据中的所述直流偏移校正系统在开环配置中操作，以校正所述直接转换接收器中的直流偏移。

28. 发明申请

US20090186587A1 TUNING A SECOND ORDER INTERCEPT POINT OF A MIXER IN A RECEIVER 有权
标题翻译：调整接收器中混合器的第二个订单中间点
公开(公告)号：US20090186587A1
公开(公告)日：2009-07-23
申请号：US12018354
申请日：2008-01-23
申请人： CHARLES LEROY SOBCHAK , Mahibur Rahman , Manish N. Shah
发明人： CHARLES LEROY SOBCHAK , Mahibur Rahman , Manish N. Shah
IPC分类号： H04B1/26
CPC分类号： H04B1/30
摘要： An IP2 tuning circuit (404, 1004, 1104 and 1404) for tuning the IP2 of a mixer (414 and 415) to minimize second order intermodulation distortion (IMD2) in a receiver (402, 1002, 1102 and 1402) of a transceiver (401, 1001, 1101 and 1401). An operating characteristic of the mixer related to IMD2 is changeable by changing a value of a setting of the mixer. Two tones outside a bandpass of the receiver are injected into the mixer and a calibration tone within the bandpass is produced as a result of IMD2. Alternatively, a DSSS signal is injected into the mixer and the calibration tone is produced at a chip rate of the DSSS signal. The power of the calibration tone is measured at a plurality of values of the settings. Alternatively, a four-level PN DSSS signal of known content is injected into the mixer, and a two-level PN DSSS signal of known content produced therefrom is correlated with a two-level PN DSSS signal of known content produced by a squaring circuit (1468).
摘要翻译： IP2调谐电路（404,1004,1104和1404），用于调谐混频器（414和415）的IP2，以使收发器的接收器（402,1002,1102和1402）中的二阶互调失真（IMD2）最小化 401,1001,1101和1401）。与IMD2相关的混频器的工作特性可以通过改变混频器的设置值而改变。接收机带通外的两个音调被注入到混频器中，并且作为IMD2的结果产生带通内的校准音。或者，将DSSS信号注入到混频器中，并以DSSS信号的码片速率产生校准音。在多个设定值下测量校准音的功率。或者，已知内容的四电平PN DSSS信号被注入到混频器中，并且由其生成的已知内容的两级PN DSSS信号与由平方电路产生的已知内容的两电平PN DSSS信号相关 1468）。

29. 发明申请

US20090088098A1 GAIN CONTROL METHODS FOR WIRELESS DEVICES AND TRANSMITTERS 有权
标题翻译：无线设备和发射机的增益控制方法
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。

30. 发明申请

US20070293180A1 DC offset correction for direct conversion receivers 有权
标题翻译：用于直接转换接收机的直流偏移校正
公开(公告)号：US20070293180A1
公开(公告)日：2007-12-20
申请号：US11452457
申请日：2006-06-14
申请人： Mahibur Rahman , Charles L. Sobchak
发明人： Mahibur Rahman , Charles L. Sobchak
IPC分类号： H04B1/10 , H04B1/26
CPC分类号： H04B1/30 , H03D3/008
摘要： A direct current (DC) offset correction system for a direct conversion receiver and corresponding receiver and methods facilitate reduction of DC offsets in such receivers. One method includes calibrating a DC offset correction system in a closed loop configuration over each of a plurality of gain settings to provide a plurality of offset data for an operating mode of the direct conversion receiver; selecting one of the plurality of offset data based on a current gain setting of the direct conversion receiver as supplied, e.g., by an AGC system; and operating the DC offset correction system in an open loop configuration using the one of the plurality of offset data to correct for a DC offset in the direct conversion receiver.
摘要翻译：用于直接转换接收机的直流（DC）偏移校正系统和相应的接收机和方法有助于减少这种接收机中的直流偏移。一种方法包括在多个增益设置中的每一个上校准闭环配置中的DC偏移校正系统，以提供用于直接转换接收机的操作模式的多个偏移数据; 基于例如由AGC系统提供的直接转换接收机的当前增益设置来选择多个偏移数据中的一个; 以及使用所述多个偏移数据中的所述多个偏移数据中的所述直流偏移校正系统在开环配置中操作，以校正所述直接转换接收器中的直流偏移。

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