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21. 发明授权

US06970717B2 Digital architecture for radio-frequency apparatus and associated methods 有权
标题翻译：射频设备数字架构及相关方法
公开(公告)号：US06970717B2
公开(公告)日：2005-11-29
申请号：US10075122
申请日：2002-02-12
申请人： Richard T. Behrens , Tod Paulus , Mark S. Spurbeck , Vishnu S. Srinivasan , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
发明人： Richard T. Behrens , Tod Paulus , Mark S. Spurbeck , Vishnu S. Srinivasan , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
IPC分类号： H04B1/28 , H04B1/40 , H04B15/02 , H04B15/04 , H04M1/00
CPC分类号： H04B1/28 , H04B1/0003 , H04B1/38 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.
摘要翻译：射频（RF）接收机包括接收机模拟电路和接收机数字电路。接收器模拟电路驻留在第一集成电路内，并且接收器数字电路位于第二集成电路内。第二集成电路通过一位数字接口耦合到第一集成电路。接收机模拟电路接收RF信号并处理所接收的RF信号以产生数字信号。接收机模拟电路将数字信号提供给接收机数字电路。接收机数字电路包括数字下变频器电路，其将数字信号与中频（IF）本地振荡器（LO）信号混合以产生数字下变频信号。接收机数字电路还包括数字滤波器电路，其对数字下变频信号进行滤波以产生经滤波的数字信号。

22. 发明授权

US07676210B2 Method for performing dual mode image rejection calibration in a receiver 有权
标题翻译：在接收机中执行双模式镜像抑制校准的方法
公开(公告)号：US07676210B2
公开(公告)日：2010-03-09
申请号：US11227797
申请日：2005-09-15
申请人： Tod Paulus , Donald A. Kerth , Srihari Adireddy , G. Diwakar Vishakhadatta
发明人： Tod Paulus , Donald A. Kerth , Srihari Adireddy , G. Diwakar Vishakhadatta
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H04B17/21
摘要： A method is disclosed for performing dual mode image rejection calibration in a receiver. A first image correction factor is acquired for use in a receiver system using a first known signal associated with a first signal band during a startup mode. The first image correction factor is adjusted incrementally during a normal operation mode. A radio frequency (RF) signal associated with the first signal band is received using the first image correction factor during the normal operation mode.
摘要翻译：公开了一种用于在接收机中执行双模式拒绝校准的方法。在启动模式期间，使用与第一信号频带相关联的第一已知信号在接收机系统中获取第一图像校正因子。在正常操作模式期间，第一图像校正因子被递增地调整。在正常操作模式期间使用第一图像校正因子接收与第一信号频带相关联的射频（RF）信号。

23. 发明授权

US08682275B2 Apparatus and methods for reducing interference in radio-frequency apparatus 有权
标题翻译：减少射频设备干扰的装置和方法
公开(公告)号：US08682275B2
公开(公告)日：2014-03-25
申请号：US12828099
申请日：2010-06-30
申请人： Donald A. Kerth , G. Diwakar Vishakhadatta
发明人： Donald A. Kerth , G. Diwakar Vishakhadatta
IPC分类号： H04B1/10 , H04K3/00
CPC分类号： H04B15/00
摘要： A converter in a radio-frequency (RF) apparatus includes a feedback circuitry. The feedback circuitry has a shielded input and a shielded output. The shielded input and the shielded output of the feedback circuitry tend to reduce interference in the converter.
摘要翻译：射频（RF）装置中的A转换器包括反馈电路。反馈电路具有屏蔽输入和屏蔽输出。反馈电路的屏蔽输入和屏蔽输出往往会降低转换器的干扰。

24. 发明申请

US20100267353A1 APPARATUS AND METHODS FOR REDUCING INTERFERENCE IN RADIO-FREQUENCY APPARATUS 有权
标题翻译：用于减少无线电频率装置干扰的装置和方法
公开(公告)号：US20100267353A1
公开(公告)日：2010-10-21
申请号：US12828099
申请日：2010-06-30
申请人： Donald A. Kerth , G. Diwakar Vishakhadatta
发明人： Donald A. Kerth , G. Diwakar Vishakhadatta
IPC分类号： H04B1/10
CPC分类号： H04B15/00
摘要： A converter in a radio-frequency (RF) apparatus includes a feedback circuitry. The feedback circuitry has a shielded input and a shielded output. The shielded input and the shielded output of the feedback circuitry tend to reduce interference in the converter.
摘要翻译：射频（RF）装置中的A转换器包括反馈电路。反馈电路具有屏蔽输入和屏蔽输出。反馈电路的屏蔽输入和屏蔽输出往往会降低转换器的干扰。

25. 发明申请

US20100246995A1 Method for Performing Dual Mode Image Rejection Calibration in a Receiver 有权
标题翻译：在接收机中执行双模式图像抑制校准的方法
公开(公告)号：US20100246995A1
公开(公告)日：2010-09-30
申请号：US12707511
申请日：2010-02-17
申请人： Tod Paulus , Donald A. Kerth , Srihari Adireddy , G. Diwakar Vishakhadatta
发明人： Tod Paulus , Donald A. Kerth , Srihari Adireddy , G. Diwakar Vishakhadatta
IPC分类号： G06K9/40
CPC分类号： H04B1/30 , H04B17/21
摘要： A method is disclosed for performing dual mode image rejection calibration in a receiver. A first image correction factor is acquired using a first known signal associated with a first signal band during a startup mode. The first image correction factor has a plurality of bits including most significant bits (MSBs) and least significant bits (LSBs). The LSBs of the first image correction factor are adjusted incrementally during a normal operation mode. A radio frequency (RF) signal associated with the first signal band is received using the first image correction factor during the normal operation mode.
摘要翻译：公开了一种用于在接收机中执行双模式拒绝校准的方法。在启动模式期间，使用与第一信号频带相关联的第一已知信号获取第一图像校正因子。第一图像校正因子具有包括最高有效位（MSB）和最低有效位（LSB））的多个位。在正常操作模式期间，第一图像校正因子的LSB被递增地调整。在正常操作模式期间使用第一图像校正因子接收与第一信号频带相关联的射频（RF）信号。

26. 发明授权

US07689190B2 Controlling the frequency of an oscillator 有权
标题翻译：控制振荡器的频率
公开(公告)号：US07689190B2
公开(公告)日：2010-03-30
申请号：US11112616
申请日：2005-04-22
申请人： Donald A. Kerth , James P. Maligeorgos , Dylan A. Hester , Lysander Lim , Augusto M. Marques , G. Tyson Tuttle
发明人： Donald A. Kerth , James P. Maligeorgos , Dylan A. Hester , Lysander Lim , Augusto M. Marques , G. Tyson Tuttle
IPC分类号： H04B7/00
CPC分类号： H03J7/04 , H03B5/36 , H03B2201/025 , H03J2200/10
摘要： A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.
摘要翻译：一种技术包括产生模拟电压以控制振荡器的频率。模拟信号被转换成数字信号，并且响应于数字信号来控制频率。

27. 发明授权

US07333831B2 Interchangeable receive inputs for band and system swappability in communication systems and related methods 有权
标题翻译：通信系统中的频带和系统可交换的可互换接收输入及相关方法
公开(公告)号：US07333831B2
公开(公告)日：2008-02-19
申请号：US11231182
申请日：2005-09-20
申请人： Vishnu S. Srinivasan , Gary B. Levy , Brett O. Mitchelson , Donald A. Kerth , Eric R. Garlepp , G. Tyson Tuttle
发明人： Vishnu S. Srinivasan , Gary B. Levy , Brett O. Mitchelson , Donald A. Kerth , Eric R. Garlepp , G. Tyson Tuttle
IPC分类号： H04B1/18
CPC分类号： H04B1/006
摘要： Interchangeable high band low-noise-amplifiers (LNAs) and low band low-noise-amplifiers (LNAs) and related methods are disclosed that greatly enhance the efficiency of designing handsets for different combinations of frequency bands. The input signals to particular pins on a receiver or transceiver integrated circuit (IC) are swappable such that multiple frequency bands can be input to the same input pins thereby allowing for simplified system design. Efficient programmable techniques are also disclosed for controlling a swap mode within communication ICs. These interchangeable or band swappable input paths, for example, can be utilized to allow interchangeability between high band (PCS, DCS) and low band (GSM, E-GSM) inputs for cellular communications. In this way, for example, handset manufacturers can build a single printed circuit board (PCB) that can be utilized for cellular communications in the United States of America, where 850 MHz (GSM) and 1900 MHz (PCS) bands are utilized, and in Europe, wherein 900 MHz (E-GSM) and 1800 MHz (DCS) bands are utilized.
摘要翻译：公开了可互换的高频带低噪声放大器（LNA）和低频带低噪声放大器（LNA）及相关方法，这大大提高了针对不同频带组合设计手机的效率。接收器或收发器集成电路（IC）上的特定引脚的输入信号是可交换的，使得可以将多个频带输入到相同的输入引脚，从而允许简化的系统设计。还公开了用于控制通信IC内的交换模式的高效可编程技术。例如，这些可互换或频带可交换的输入路径可用于允许用于蜂窝通信的高频带（PCS，DCS）和低频（GSM，E-GSM）输入之间的互换性。以这种方式，例如，手机制造商可以构建可用于在美国使用850MHz（GSM）和1900MHz（PCS）频带的美国的蜂窝通信的单个印刷电路板（PCB），以及在欧洲，其中使用900MHz（E-GSM）和1800MHz（DCS）频带。

28. 发明授权

US07272374B2 Dynamic selection of local oscillator signal injection for image rejection in integrated receivers 有权
标题翻译：动态选择本地振荡器信号注入用于集成接收机中的图像抑制
公开(公告)号：US07272374B2
公开(公告)日：2007-09-18
申请号：US10881579
申请日：2004-06-30
申请人： G. Tyson Tuttle , Dan B. Kasha , Donald A. Kerth
发明人： G. Tyson Tuttle , Dan B. Kasha , Donald A. Kerth
IPC分类号： H04B1/28
CPC分类号： H04B1/10 , H03J1/0041 , H04B1/28
摘要： A system and method are disclosed for dynamically selecting high-side injection or low-side injection of local oscillator mixing signals based upon an assessment of signal power within the input signal spectrum that could cause unwanted images in the processed signal. This image rejection assessment provides an advantageous basis upon which to make dynamic high-side versus low-side injection determinations.
摘要翻译：公开了一种系统和方法，用于基于对输入信号频谱内的信号功率的评估来动态地选择本地振荡器混合信号的高侧注入或低侧注入，这可能导致处理信号中的不需要的图像。这种镜像抑制评估提供了进行动态高侧对低侧注射测定的有利基础。

29. 发明授权

US07177617B2 Method and apparatus for enhancing signal quality within a wireless receiver 有权
标题翻译：一种用于增强无线接收机内的信号质量的方法和装置
公开(公告)号：US07177617B2
公开(公告)日：2007-02-13
申请号：US10749012
申请日：2003-12-30
申请人： Donald A. Kerth , G. Tyson Tuttle
发明人： Donald A. Kerth , G. Tyson Tuttle
IPC分类号： H04B1/10
CPC分类号： H04B1/0007 , H04B1/28
摘要： A method and apparatus for enhancing signal quality within a wireless receiver are disclosed. An image of a desired signal is down-converted to a baseband signal by a digital down converter. The energy of the baseband signal is subsequently determined. If the energy of the baseband signal is equal to or greater than a predetermined threshold, then the IF is swapped for any incoming signals. If the energy of the baseband signal is less than the predetermined threshold, then the IF is maintained for any incoming signals.
摘要翻译：公开了一种用于增强无线接收机内的信号质量的方法和装置。所需信号的图像由数字下变频器下变频为基带信号。随后确定基带信号的能量。如果基带信号的能量等于或大于预定阈值，则IF被交换用于任何输入信号。如果基带信号的能量小于预定阈值，则对于任何输入信号都保持IF。

30. 发明授权

US5212659A Low precision finite impulse response filter for digital interpolation 失效
标题翻译：用于数字插值的低精度有限冲击响应滤波器
公开(公告)号：US5212659A
公开(公告)日：1993-05-18
申请号：US773044
申请日：1991-10-08
申请人： Jeffrey W. Scott , Donald A. Kerth , Shaochyi Lin
发明人： Jeffrey W. Scott , Donald A. Kerth , Shaochyi Lin
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
CPC分类号： H03H17/0614 , H03H17/0671
摘要： A low precision Finite Impulse Response filter (FIR) is provided for filtering in a digital interpolation operation. The interpolation operation includes two steps, a sampling rate conversion operation for interspersing zeroes between samples in an input sequence and a filtering step of filtering out images that result from this operation. The filtering operation utilizes a FIR filter that utilizes low precision filter coefficients that are selected to tune the frequency response such that the low end frequency response including the pass band, the transition band, and the portion of the stop band immediately after the transition band provides a response equivalent to that commensurate with substantially higher precision FIR filter coefficients, with the high frequency end of the stop band gradually increasing. A second, low pass filter section is provided for filtering out the image energy that exists at the output of the FIR filter in the high frequency end of the stop band to provide an overall filter response that is commensurate to that utilizing substantially higher precision FIR coefficients in the filter section. The FIR filter coefficients utilized are restricted to the set of [-1, 0, +1] such that a multiplierless FIR filter can be realized. The FIR filter coefficients are obtained by processing the infinite FIR filter coefficients through a software delta-sigma quantizer which quantizes the output to the desired low precision FIR filter coefficients.
摘要翻译：提供了一种低精度有限脉冲响应滤波器（FIR），用于在数字插值操作中进行滤波。内插操作包括两个步骤：用于在输入序列中的样本之间散布零的采样率转换操作和滤除由该操作产生的图像的滤波步骤。滤波操作利用FIR滤波器，该FIR滤波器利用被选择来调谐频率响应的低精度滤波器系数，使得包括通带，过渡频带以及紧接在转换频带之后的阻带的部分的低端频率响应提供等效于具有与较高精度FIR滤波器系数相当的响应，阻带的高频端逐渐增加。提供了第二个低通滤波器部分，用于滤除存在于阻带的高频端中的FIR滤波器的输出处的图像能量，以提供与利用基本上更高精度的FIR系数的整体滤波器响应相匹配的整体滤波器响应在过滤器部分。所使用的FIR滤波器系数被限制为[-1,0，+1]的集合，使得可以实现无乘法FIR滤波器。 FIR滤波器系数通过软件delta-sigma量化器处理无限FIR滤波器系数来获得，该量化器将输出量化到期望的低精度FIR滤波器系数。

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