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1. 发明申请

US20170077886A1 RF TUNER WITH BLOCKER DETECTION AND NOISE LIMITED REGION RECOVERY 有权
标题翻译：射频调谐器与阻塞器检测和噪声有限区域恢复
公开(公告)号：US20170077886A1
公开(公告)日：2017-03-16
申请号：US15263315
申请日：2016-09-12
申请人： Reza Alavi , Shobhit Agrawal , Kenneth J. Keyes
发明人： Reza Alavi , Shobhit Agrawal , Kenneth J. Keyes
IPC分类号： H03G3/30 , H03M3/00 , H03F3/19
CPC分类号： H03M3/462 , H03F1/52 , H03F3/189 , H03F2200/294 , H03F2200/426 , H03F2200/451 , H03G3/3052 , H03G3/3068 , H03J2200/17
摘要： A wideband RF tuner with blocker signal detector for detection of blocking signals and for fast recovery from noise limited region.
摘要翻译：具有阻塞信号检测器的宽带RF调谐器，用于检测阻塞信号并从噪声限制区域快速恢复。

2. 发明申请

US20140269863A1 TRANSMITTER LO LEAKAGE CALIBRATION SCHEME USING LOOPBACK CIRCUITRY 有权
标题翻译：发射机LO泄漏校准方案使用回波电路
公开(公告)号：US20140269863A1
公开(公告)日：2014-09-18
申请号：US13826365
申请日：2013-03-14
申请人： Jianxun Fan , Reza Alavi , Steven R. Bal , David J. McLaurin
发明人： Jianxun Fan , Reza Alavi , Steven R. Bal , David J. McLaurin
IPC分类号： H04B17/00
CPC分类号： H04B17/11 , H04B1/525 , H04B15/04
摘要： A method and apparatus for estimating and compensating TX LO leakage using circuitry on a loopback path connecting the transmitter and receiver are provided. The TX LO leakage may be estimated by measuring the DC signal on the receiver, measuring the phase difference between the received LO signal and the receiver LO signal, and filtering LO harmonics that may arise from the use of non-linear mixers. The DC signal on the receiver may be measured by opening and closing the loopback path, or changing the gain of the loopback path, or flipping the phase of looped back TX signal. The method may be used in an initialization or tracking calibration scheme.
摘要翻译：提供了一种使用连接发射机和接收机的环回路径上的电路来估计和补偿TX LO泄漏的方法和装置。 TX LO泄漏可以通过测量接收机上的DC信号，测量接收的LO信号和接收机LO信号之间的相位差，以及使用非线性混频器来滤除LO谐波来估计。可以通过打开和关闭环回路径或改变环回路径的增益或翻转循环TX信号的相位来测量接收机上的DC信号。该方法可用于初始化或跟踪校准方案中。

3. 发明申请

US20130050132A1 TECHNIQUES FOR CAPACITIVE TOUCH SCREEN CONTROL 审中-公开
标题翻译：电容触摸屏控制技术
公开(公告)号：US20130050132A1
公开(公告)日：2013-02-28
申请号：US13218788
申请日：2011-08-26
申请人： Javier Calpe Maravilla , Alberto Marinas , Santiago Iriarte , Enrique Company Bosch , Miguel Chanca , Reza Alavi , Vladimir Friedman , John Cleary
发明人： Javier Calpe Maravilla , Alberto Marinas , Santiago Iriarte , Enrique Company Bosch , Miguel Chanca , Reza Alavi , Vladimir Friedman , John Cleary
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F1/3262 , G06F3/0418
摘要： Techniques to control a capacitive touch screen that decrease processing time and increase noise rejection. The techniques may include injecting a plurality of excitation signals having unique spectral profiles onto conductors of the capacitive touch screen, sampling signals returned from the screen, and determining a location of touch. The techniques may further include injecting a plurality of excitation signals having unique spectral profiles onto adjacent or non-adjacent conductors of the capacitive touch screen. The techniques may further include injecting a plurality of excitation signals having unique spectral profiles onto conductors of the capacitive touch screen in unequal measures. The techniques may also include mapping frequency characteristics of noise present on the capacitive touch screen.
摘要翻译：用于控制电容式触摸屏的技术，其减少处理时间并增加噪声抑制。这些技术可以包括将具有独特光谱轮廓的多个激励信号注入到电容式触摸屏的导体上，从屏幕返回的采样信号以及确定触摸的位置。这些技术可以进一步包括将具有唯一光谱轮廓的多个激励信号注入到电容式触摸屏的相邻或非相邻导体上。这些技术可以进一步包括以不相等的措施将具有独特光谱分布的多个激励信号注入到电容式触摸屏的导体上。这些技术还可以包括映射存在于电容式触摸屏上的噪声的频率特性。

4. 发明申请

US20120274398A1 RF AGC Control 有权
标题翻译：射频AGC控制
公开(公告)号：US20120274398A1
公开(公告)日：2012-11-01
申请号：US13094485
申请日：2011-04-26
申请人： Reza ALAVI , Saeed AGHTAR , Christoph STEINBRECHER , Arathi SUNDARESAN
发明人： Reza ALAVI , Saeed AGHTAR , Christoph STEINBRECHER , Arathi SUNDARESAN
IPC分类号： H03G3/30 , H03F1/00
CPC分类号： H03F3/189 , H03F3/45475 , H03F3/45932 , H03F2200/294 , H03G1/0029 , H03G1/007 , H03G1/0088 , H03G3/3052
摘要： Embodiments of the present invention may provide a signal processor with a wide gain range. The signal processor may comprise at least a discrete step gain stage and a continuous variable gain amplifier (VGA) stage. The discrete step gain stage may comprise a programmable gain amplifier (PGA) (e.g., low noise amplifiers 1 and 2 (LNA1 and LNA2)). The VGA stage may provide a continuous range to compensate the LNAs gain steps. In one embodiment, the AGC controller enables an inherent hysteresis with the AGC step change if required.
摘要翻译：本发明的实施例可以提供具有宽增益范围的信号处理器。信号处理器可以包括至少离散步进增益级和连续可变增益放大器（VGA）级。离散步进增益级可以包括可编程增益放大器（PGA）（例如，低噪声放大器1和2（LNA1和LNA2））。 VGA级可以提供连续的范围来补偿LNA的增益步骤。在一个实施例中，如果需要，AGC控制器实现具有AGC步长变化的固有滞后。

5. 发明授权

US08965317B2 RF AGC control 有权
标题翻译： RF AGC控制
公开(公告)号：US08965317B2
公开(公告)日：2015-02-24
申请号：US13094485
申请日：2011-04-26
申请人： Reza Alavi , Saeed Aghtar , Christoph Steinbrecher , Arathi Sundaresan
发明人： Reza Alavi , Saeed Aghtar , Christoph Steinbrecher , Arathi Sundaresan
IPC分类号： H04B1/06 , H03F3/189 , H03F3/45 , H03G1/00 , H03G3/30
CPC分类号： H03F3/189 , H03F3/45475 , H03F3/45932 , H03F2200/294 , H03G1/0029 , H03G1/007 , H03G1/0088 , H03G3/3052
摘要： Embodiments of the present invention may provide a signal processor with a wide gain range. The signal processor may comprise at least a discrete step gain stage and a continuous variable gain amplifier (VGA) stage. The discrete step gain stage may comprise a programmable gain amplifier (PGA) (e.g., low noise amplifiers 1 and 2 (LNA1 and LNA2)). The VGA stage may provide a continuous range to compensate the LNAs gain steps. In one embodiment, the AGC controller enables an inherent hysteresis with the AGC step change if required.
摘要翻译：本发明的实施例可以提供具有宽增益范围的信号处理器。信号处理器可以包括至少离散步进增益级和连续可变增益放大器（VGA）级。离散步进增益级可以包括可编程增益放大器（PGA）（例如，低噪声放大器1和2（LNA1和LNA2））。 VGA级可以提供连续的范围来补偿LNA的增益步骤。在一个实施例中，如果需要，AGC控制器实现具有AGC步长变化的固有滞后。

6. 发明授权

US08286067B2 Method for transmitting sampled data and control information between a DSP and an RF/analog front-end 有权
标题翻译：在DSP和RF /模拟前端之间传输采样数据和控制信息的方法
公开(公告)号：US08286067B2
公开(公告)日：2012-10-09
申请号：US12581740
申请日：2009-10-19
申请人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
发明人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
IPC分类号： G06F11/10
CPC分类号： H04L12/2838 , H03M13/093 , H04L1/0057 , H04L2012/2849
摘要： A method for delivering control information together with sampled data between a DSP and an RF/analog front-end in a high speed communication modem, which embeds sampled data and control information in frames to be transferred over one interface. A frame may comprise various fields, each may consist of one or more bytes or octets. The frame may have a data field for carrying the sampled data, and at least one control field for transferring the control information to update RF/analog front-end registers. The control field may include an octet containing a control address, an octet containing a control command, and an octet containing control data. The frame may also provide means of synchronization, e.g., by using a sync field to identify the frame boundary.
摘要翻译：一种用于在高速通信调制解调器中的DSP和RF /模拟前端之间传送控制信息以及采样数据的方法，该方法将采样数据和控制信息嵌入到要通过一个接口传送的帧中。帧可以包括各种字段，每个字段可以由一个或多个字节或八位字节组成。帧可以具有用于承载采样数据的数据字段，以及用于传送控制信息以更新RF /模拟前端寄存器的至少一个控制字段。控制字段可以包括包含控制地址的八位字节，包含控制命令的八位字节和包含控制数据的八位位组。该帧还可以提供同步的方式，例如通过使用同步字段来识别帧边界。

7. 发明申请

US20100199158A1 METHOD FOR TRANSMITTING SAMPLED DATA AND CONTROL INFORMATION BETWEEN A DSP AND AN RF/ANALOG FRONT-END 有权
标题翻译：用于发送DSP和RF /模拟前端之间的采样数据和控制信息的方法
公开(公告)号：US20100199158A1
公开(公告)日：2010-08-05
申请号：US12581740
申请日：2009-10-19
申请人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
发明人： Vladimir Friedman , Reza Alavi , Raju Hormis , Leo Montreuil
IPC分类号： H04B1/38 , H03M13/09 , G06F11/10
CPC分类号： H04L12/2838 , H03M13/093 , H04L1/0057 , H04L2012/2849
摘要： A method for delivering control information together with sampled data between a DSP and an RF/analog front-end in a high speed communication modem, which embeds sampled data and control information in frames to be transferred over one interface. A frame may comprise various fields, each may consist of one or more bytes or octets. The frame may have a data field for carrying the sampled data, and at least one control field for transferring the control information to update RF/analog front-end registers. The control field may include an octet containing a control address, an octet containing a control command, and an octet containing control data. The frame may also provide means of synchronization, e.g., by using a sync field to identify the frame boundary.
摘要翻译：一种用于在高速通信调制解调器中的DSP和RF /模拟前端之间传送控制信息以及采样数据的方法，该方法将采样数据和控制信息嵌入到要通过一个接口传送的帧中。帧可以包括各种字段，每个字段可以由一个或多个字节或八位字节组成。帧可以具有用于承载采样数据的数据字段，以及用于传送控制信息以更新RF /模拟前端寄存器的至少一个控制字段。控制字段可以包括包含控制地址的八位字节，包含控制命令的八位字节和包含控制数据的八位位组。该帧还可以提供同步的方式，例如通过使用同步字段来识别帧边界。

8. 发明授权

US07050521B1 Frequency assisted digital timing recovery 有权
标题翻译：频率辅助数字定时恢复
公开(公告)号：US07050521B1
公开(公告)日：2006-05-23
申请号：US10144420
申请日：2002-05-13
申请人： Reza Alavi
发明人： Reza Alavi
IPC分类号： H04L7/04 , H04L7/00
CPC分类号： H04L27/2657 , H04L7/027 , H04L7/06 , H04L27/2662 , H04L27/2675 , H04L2027/0079
摘要： A method and system is provided for acquisition of the initial timing for a digital phase lock loop timing recovery system. A modified loop filter and post filter allows for an instantaneously change the oscillation frequency of a controllable oscillator and an instantaneous relative change of the sampling phase of the sampled data. These two features are used for initial timing recovery, in which the process of frequency and phase acquisition is separated into two independent steps. Once the initial timing is acquired, the timing recovery system is operated as a conventional digital phase lock loop timing recovery system to track additional frequency and phase drifts at the receiver with respect to the transmitter.
摘要翻译：提供了一种用于获取数字锁相环定时恢复系统的初始定时的方法和系统。修改的环路滤波器和后置滤波器允许瞬时改变可控振荡器的振荡频率和采样数据的采样相位的瞬时相对变化。这两个特征用于初始定时恢复，其中频率和相位采集的过程被分成两个独立的步骤。一旦获得了初始定时，定时恢复系统就被操作为传统的数字锁相环定时恢复系统，以跟踪接收机相对于发射机的附加频率和相位漂移。

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