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1. 发明授权

US07375595B2 Method and apparatus for calibrating a phase locked loop in open-loop 有权
标题翻译：用于校准开环中的锁相环的方法和装置
公开(公告)号：US07375595B2
公开(公告)日：2008-05-20
申请号：US11540878
申请日：2006-09-29
申请人： Louie Serrano , Alireza Zolfaghari , Paul Lettieri , Hea Joung Kim , Hooman Darabi , Henrik Jensen , Behnam Mohammadi
发明人： Louie Serrano , Alireza Zolfaghari , Paul Lettieri , Hea Joung Kim , Hooman Darabi , Henrik Jensen , Behnam Mohammadi
IPC分类号： H03L7/08 , H03L7/099
CPC分类号： H03L7/0898 , H03L7/10 , H03L7/18
摘要： Methods and apparatus for calibrating a transitional loop, such as a phase locked loop, are disclosed. An example method includes performing an open loop calibration of a voltage controlled oscillator (VCO). The open loop calibration includes tuning the output oscillation frequency of the VCO to within a predetermined range of frequencies. The example method further includes determining a voltage offset and a gain error of an analog to digital converter (ADC) coupled with the phase locked loop. The example method also includes determining a gain offset of the open loop calibrated VCO using the voltage offset and the gain error of the ADC. In the example method, a signal provided by a charge pump of the PLL is adjusted based on the determined gain offset.
摘要翻译：公开了用于校准过渡环路的方法和装置，例如锁相环路。示例性方法包括执行压控振荡器（VCO）的开环校准。开环校准包括将VCO的输出振荡频率调谐到预定频率范围内。示例性方法还包括确定与锁相环耦合的模数转换器（ADC）的电压偏移和增益误差。示例性方法还包括使用电压偏移和ADC的增益误差来确定开环校准的VCO的增益偏移。在示例性方法中，基于所确定的增益偏移来调整由PLL的电荷泵提供的信号。

2. 发明申请

US20080079509A1 METHOD AND APPARATUS FOR CALIBRATING A PHASE LOCKED LOOP IN OPEN-LOOP. 有权
标题翻译：用于校准开环中相位锁定环路的方法和装置。
公开(公告)号：US20080079509A1
公开(公告)日：2008-04-03
申请号：US11540878
申请日：2006-09-29
申请人： Louie Serrano , Alireza Zolfaghari , Paul Lettieri , Hea Joung Kim , Hooman Darabi , Henrik Jensen , Behnam Mohammadi
发明人： Louie Serrano , Alireza Zolfaghari , Paul Lettieri , Hea Joung Kim , Hooman Darabi , Henrik Jensen , Behnam Mohammadi
IPC分类号： H03L1/00
CPC分类号： H03L7/0898 , H03L7/10 , H03L7/18
摘要： Methods and apparatus for calibrating a transitional loop, such as a phase locked loop, are disclosed. An example method includes performing an open loop calibration of a voltage controlled oscillator (VCO). The open loop calibration includes tuning the output oscillation frequency of the VCO to within a predetermined range of frequencies. The example method further includes determining a voltage offset and a gain error of an analog to digital converter (ADC) coupled with the phase locked loop. The example method also includes determining a gain offset of the open loop calibrated VCO using the voltage offset and the gain error of the ADC. In the example method, a signal provided by a charge pump of the PLL is adjusted based on the determined gain offset.
摘要翻译：公开了用于校准过渡环路的方法和装置，例如锁相环路。示例性方法包括执行压控振荡器（VCO）的开环校准。开环校准包括将VCO的输出振荡频率调谐到预定频率范围内。示例性方法还包括确定与锁相环耦合的模数转换器（ADC）的电压偏移和增益误差。示例性方法还包括使用电压偏移和ADC的增益误差来确定开环校准的VCO的增益偏移。在示例性方法中，基于所确定的增益偏移来调整由PLL的电荷泵提供的信号。

3. 发明授权

US07593707B2 Method and system for compensation of DC offset in an RF receiver 有权
标题翻译：用于补偿RF接收机中直流偏移的方法和系统
公开(公告)号：US07593707B2
公开(公告)日：2009-09-22
申请号：US10987977
申请日：2004-11-12
申请人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
发明人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
IPC分类号： H04B1/06
CPC分类号： H04L25/061 , H03D3/008 , H03F1/34 , H03F2200/336 , H03F2200/375 , H03G3/001 , H03G3/3068 , H04B1/30 , H04L25/063 , H04L27/0002 , H04L27/364 , H04L27/366
摘要： Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback signal based on the selected sampled data. The generated feedback signal may be fed back to at least one of a plurality of input paths, and at least one of the feedback signals may be of an opposite polarity to the selected sampled data. The selected sampled data may be converted to a digital sample, a plurality of the digital samples accumulated, and an average of the plurality of the digital samples calculated. A digital feedback value may be generated based on the average. A phase of the digital feedback value may be adjusted via a derotator, which may utilize the coordinate rotation digital computer (CORDIC) algorithm.
摘要翻译：补偿RF接收机中的DC偏移的方面可以包括从多个输出路径中的至少一个采样数据，选择采样数据并基于所选择的采样数据生成至少一个反馈信号。产生的反馈信号可以反馈到多个输入路径中的至少一个，并且至少一个反馈信号可能与所选择的采样数据具有相反的极性。所选择的采样数据可以被转换成数字样本，多个数字样本被累积，并且计算出多个数字样本的平均值。可以基于平均值生成数字反馈值。数字反馈值的相位可以通过解旋器进行调整，该解旋器可以利用坐标旋转数字计算机（CORDIC）算法。

4. 发明申请

US20090066548A1 METHOD AND SYSTEM FOR COMPENSATION OF DC OFFSET IN AN RF RECEIVER 有权
标题翻译：用于补偿RF接收机中直流偏移的方法和系统
公开(公告)号：US20090066548A1
公开(公告)日：2009-03-12
申请号：US12268957
申请日：2008-11-11
申请人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
发明人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
IPC分类号： H03M1/16 , H03M1/66
CPC分类号： H04L25/061 , H03D3/008 , H03F1/34 , H03F2200/336 , H03F2200/375 , H03G3/001 , H03G3/3068 , H04B1/30 , H04L25/063 , H04L27/0002 , H04L27/364 , H04L27/366
摘要： System and method for processing signals are disclosed. The method may include converting, in an RF receiver, one or more analog samples, which are selected from one of a plurality of output paths of the RF receiver, to one or more digital samples. A digital feedback value may be generated based on an average of the one or more converted digital samples. A scaled version of the generated digital feedback value may be converted to an analog value. The converted analog value may be fed back to one or more of a plurality of input paths of the RF receiver. The one or more analog samples may be selected from among a plurality of output analog samples from the plurality of output paths of the RF receiver.
摘要翻译：公开了用于处理信号的系统和方法。该方法可以包括在RF接收机中将从RF接收机的多个输出路径中的一个中选择的一个或多个模拟样本转换成一个或多个数字样本。可以基于一个或多个转换的数字样本的平均值来生成数字反馈值。生成的数字反馈值的缩放版本可以被转换为模拟值。转换的模拟值可以被反馈到RF接收机的多个输入路径中的一个或多个。可以从RF接收机的多个输出路径的多个输出模拟采样中选择一个或多个模拟采样。

5. 发明授权

US08019309B2 Method and system for a second order input intercept point (IIP2) calibration scheme 有权
标题翻译：二阶输入截点（IIP2）校准方案的方法和系统
公开(公告)号：US08019309B2
公开(公告)日：2011-09-13
申请号：US10976976
申请日：2004-10-29
申请人： Hooman Darabi , Brima Ibrahim , Hea Joung Kim
发明人： Hooman Darabi , Brima Ibrahim , Hea Joung Kim
IPC分类号： H04B1/10
CPC分类号： H04L25/061 , H03D3/008 , H04B1/30 , H04L25/0272 , H04L25/0294 , H04L25/0296
摘要： In RF transceivers, a method and system for a second order input intercept point (IIP2) calibration scheme are provided. Transceiver calibration schemes to compensate for DC offsets produced by interfering signals may be performed during production testing or field operation. During production testing, an external source may inject a blocker signal that produces DC offsets in the receiver portion of the transceiver. A transceiver switch may be set to receive mode in this scheme. During field operation, a power amplifier in the transmitter portion of the transceiver may inject the blocker signal. In this scheme, the switch may be set to transmit mode and the DC offsets are produced by the portion of the injected blocker signal that leaks through the switch. In both schemes, a DC offset sensor detects DC offsets in the I/Q signal paths and may determine compensation currents which may be applied by injection circuits.
摘要翻译：在RF收发器中，提供了用于二阶输入截点（IIP2）校准方案的方法和系统。可以在生产测试或现场操作期间执行用于补偿由干扰信号产生的直流偏移的收发器校准方案。在生产测试期间，外部源可以注入在收发器的接收器部分中产生DC偏移的阻塞信号。可以在该方案中将收发器开关设置为接收模式。在场操作期间，收发器的发射器部分中的功率放大器可以注入阻塞信号。在该方案中，开关可以被设置为发送模式，并且DC偏移由注入的阻塞信号的部分通过开关泄漏产生。在两种方案中，DC偏移传感器检测I / Q信号路径中的直流偏移，并且可以确定可由注入电路施加的补偿电流。

6. 发明授权

US07840202B2 Method and system for compensation of DC offset in an RF receiver 有权
标题翻译：用于补偿RF接收机中直流偏移的方法和系统
公开(公告)号：US07840202B2
公开(公告)日：2010-11-23
申请号：US12268957
申请日：2008-11-11
申请人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
发明人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
IPC分类号： H04B1/06
CPC分类号： H04L25/061 , H03D3/008 , H03F1/34 , H03F2200/336 , H03F2200/375 , H03G3/001 , H03G3/3068 , H04B1/30 , H04L25/063 , H04L27/0002 , H04L27/364 , H04L27/366
摘要： System and method for processing signals are disclosed. The method may include converting, in an RF receiver, one or more analog samples, which are selected from one of a plurality of output paths of the RF receiver, to one or more digital samples. A digital feedback value may be generated based on an average of the one or more converted digital samples. A scaled version of the generated digital feedback value may be converted to an analog value. The converted analog value may be fed back to one or more of a plurality of input paths of the RF receiver. The one or more analog samples may be selected from among a plurality of output analog samples from the plurality of output paths of the RF receiver.
摘要翻译：公开了用于处理信号的系统和方法。该方法可以包括在RF接收机中将从RF接收机的多个输出路径中的一个中选择的一个或多个模拟样本转换成一个或多个数字样本。可以基于一个或多个转换的数字样本的平均值来生成数字反馈值。生成的数字反馈值的缩放版本可以被转换为模拟值。转换的模拟值可以被反馈到RF接收机的多个输入路径中的一个或多个。可以从RF接收机的多个输出路径的多个输出模拟采样中选择一个或多个模拟采样。

7. 发明授权

US08081714B2 Method and system for reuse of CORDIC in an RF transceiver by reconfiguration in real time 有权
标题翻译： CORDIC在RF收发器中实时重配置的方法和系统
公开(公告)号：US08081714B2
公开(公告)日：2011-12-20
申请号：US10989536
申请日：2004-11-16
申请人： Brima Ibrahim , Hea Joung Kim , Henrik Tholstrup Jensen , Paul Lettieri , Siukai Mak
发明人： Brima Ibrahim , Hea Joung Kim , Henrik Tholstrup Jensen , Paul Lettieri , Siukai Mak
IPC分类号： H04L27/00
CPC分类号： H03D3/006
摘要： Methods and systems for processing an RF signal are disclosed herein. Aspects of the method may comprise utilizing a single input CORDIC and a single output CORDIC for synchronizing and demodulating a received signal, wherein the received signal may comprise one or more bit rates. The received signal may comprise a one megabit per second (Mbps) signal. The single input CORDIC may be configured to operate in a rotating mode and the single output CORDIC may be configured to operate in a rotating mode and/or an arctangent (ARCTAN) mode. A rotated output of the single input CORDIC may be correlated with a phase shift keying (PSK) synchronization (sync) word and a portion of the correlated rotated output of the single input CORDIC may be buffered.
摘要翻译：本文公开了用于处理RF信号的方法和系统。该方法的方面可以包括利用单个输入CORDIC和单个输出CORDIC来同步和解调所接收的信号，其中所接收的信号可以包括一个或多个比特率。所接收的信号可以包括一兆兆比特每秒（Mbps）信号。单输入CORDIC可以被配置为以旋转模式操作，并且单输出CORDIC可以被配置为在旋转模式和/或反正切（ARCTAN）模式下操作。单输入CORDIC的旋转输出可以与相移键控（PSK）同步（sync）字相关，并且单个输入CORDIC的相关旋转输出的一部分可以被缓冲。

8. 发明申请

US20130010853A1 Method and System for Selective Equalization Enablement Based on Modulation Type 有权
标题翻译：基于调制类型的选择性均衡化方法与系统
公开(公告)号：US20130010853A1
公开(公告)日：2013-01-10
申请号：US13616436
申请日：2012-09-14
申请人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
发明人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
IPC分类号： H04L27/01
CPC分类号： H04L27/0012
摘要： Aspects of a method and system for selective equalization enablement based on modulation type are disclosed. One such method includes receiving a signal via an RF channel, detecting a modulation type of the signal, and selecting an equalization circuit for processing the signal based on the modulation type.
摘要翻译：公开了一种基于调制类型的选择性均衡实现方法和系统的方面。一种这样的方法包括经由RF信道接收信号，检测信号的调制类型，以及基于调制类型选择用于处理信号的均衡电路。

9. 发明授权

US08295768B2 Method and system for selective equalization enablement based on modulation type 有权
标题翻译：基于调制类型的选择性均衡使能的方法和系统
公开(公告)号：US08295768B2
公开(公告)日：2012-10-23
申请号：US13211111
申请日：2011-08-16
申请人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
发明人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
IPC分类号： H04B7/00
CPC分类号： H04L27/0012
摘要： Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing radio frequency (RF) signals received via a RF channel, detecting a modulation type of at least a portion of the received RF signals, and determining whether to enable or disable an equalization circuit for processing at least a subsequent portion of the received RF signals based on the detected modulation type; and selecting one of a plurality of inputs to a selector based on the detected modulation type, wherein the plurality of inputs comprise the at least a subsequent portion of the received signals and an output signal generated by the equalization circuit.
摘要翻译：一种用于基于调制类型的选择性均衡启用的方法和系统的方面可以在用于处理经由RF信道接收的射频（RF）信号的方法中找到，检测所接收的RF信号的至少一部分的调制类型，以及基于检测到的调制类型，确定是否启用或禁用用于处理所接收的RF信号的至少后续部分的均衡电路; 以及基于所检测的调制类型，向选择器选择多个输入中的一个，其中所述多个输入包括所述接收信号的至少后续部分和由所述均衡电路产生的输出信号。

10. 发明授权

US08000653B2 Method and system for selective equalization enablement based on modulation type 失效
标题翻译：基于调制类型的选择性均衡使能的方法和系统
公开(公告)号：US08000653B2
公开(公告)日：2011-08-16
申请号：US12538444
申请日：2009-08-10
申请人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
发明人： Brima Ibrahim , Hea Joung Kim , Paul Lettieri
IPC分类号： H04B7/00
CPC分类号： H04L27/0012
摘要： Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing a radio frequency (RF) signal that comprises receiving a Bluetooth signal via an RF channel, detecting a modulation type of the received Bluetooth signal, and selecting an equalization circuit for processing the received Bluetooth signal based on the detected modulation type. The method may also comprise determining a data rate based on the detected modulation type.
摘要翻译：基于调制类型的选择性均衡使能的方法和系统的方面可以在用于处理射频（RF）信号的方法中找到，该方法和系统包括经由RF信道接收蓝牙信号，检测接收的蓝牙信号的调制类型，以及基于检测到的调制类型选择用于处理接收到的蓝牙信号的均衡电路。该方法还可以包括基于检测到的调制类型来确定数据速率。

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