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1. 发明申请

US20080309524A1 Second-Order Polynomial, Interpolation-Based, Sampling Rate Converter and Method and Transmitters Employing the Same 审中-公开
标题翻译：二阶多项式，基于插值的采样率转换器及其使用的方法和发送器
公开(公告)号：US20080309524A1
公开(公告)日：2008-12-18
申请号：US12121090
申请日：2008-05-15
申请人： Ioannis L. Syllaios , Khurram Waheed , Robert B. Staszewski
发明人： Ioannis L. Syllaios , Khurram Waheed , Robert B. Staszewski
IPC分类号： H03M7/00
CPC分类号： H03H17/0685 , H03H17/028
摘要： A sampling rate converter, a method of performing digital sampling rate conversion and a wireless transmitter incorporating the filter or the method. In one embodiment, the sampling rate converter includes: (1) an input configured to receive digital data from a first clock domain sampled at a first sampling rate, (2) an output configured to provide digital data to a second clock domain sampled at a second sampling rate that differs from the first sampling rate and (3) a filter with a second-order, polynomial-based impulse response coupled to the input and the output and configured to apply coefficients having only one nonunitary divisor to the digital data from the first clock domain.
摘要翻译：采样率转换器，执行数字采样率转换的方法和包含滤波器或方法的无线发射器。在一个实施例中，采样率转换器包括：（1）被配置为从以第一采样率采样的第一时钟域接收数字数据的输入，（2）被配置为将数字数据提供给在第二采样率与第一采样率不同，以及（3）具有耦合到输入和输出的二阶多项式的脉冲响应的滤波器，并且被配置为将仅具有一个非维数除数的系数应用于来自第一个时钟域

2. 发明申请

US20070189417A1 PRECISE DELAY ALIGNMENT BETWEEN AMPLITUDE AND PHASE/FREQUENCY MODULATION PATHS IN A DIGITAL POLAR TRANSMITTER 有权
标题翻译：数字极性放大器中的幅度和相位/频率调制方式之间的精确延迟对准
公开(公告)号：US20070189417A1
公开(公告)日：2007-08-16
申请号：US11675565
申请日：2007-02-15
申请人： Khurram Waheed , Jayawardan Janardhanan , Sameh S. Rezeq , Robert B. Staszewski , Saket Jalan
发明人： Khurram Waheed , Jayawardan Janardhanan , Sameh S. Rezeq , Robert B. Staszewski , Saket Jalan
IPC分类号： H04L27/04 , H04L7/00
CPC分类号： H04L27/368 , H03C5/00 , H04L7/0029 , H04L7/0041 , H04L7/005 , H04L7/0079 , H04L7/02
摘要： A novel apparatus for and method of delay alignment between amplitude and phase/frequency modulation paths in a digital polar transmitter. The invention provides a fully digital delay alignment mechanism where better than nanosecond alignment is achieved by accounting for processing delays in the digital circuit modules of the transmitter and by the use of programmable delay elements spread across several clock domains. Tapped delay lines compensate for propagation and settling delays in analog elements such as the DCO, dividers, quad switch, buffers, level shifters and digital pre-power amplifier (DPA). A signal correlative mechanism is provided whereby data from the amplitude and phase/frequency modulation paths to be matched is first interpolated and then cross-correlated to achieve accuracy better than the clock domain of comparison. Within the ADPLL portion of the transmitter, precise alignment of reference and direct point injection points in the ADPLL is provded using multiple clock domains, tapped delay lines and clock adjustment circuits.
摘要翻译：数字极性发射机的幅度和相位/频率调制路径之间的延迟对准的新型装置和方法。本发明提供了一种全数字延迟对准机制，其通过考虑发射机的数字电路模块中的处理延迟以及通过使用分布在几个时钟域上的可编程延迟元件来实现比纳秒对准更好的方法。分接延迟线补偿模拟元件（如DCO，分频器，四通道开关，缓冲器，电平移位器和数字预功率放大器（DPA））中的传播和稳定延迟。提供了一种信号相关机制，其中来自要匹配的幅度和相位/频率调制路径的数据首先被内插，然后进行交叉相关，以获得比时钟域更好的比较。在发射机的ADPLL部分内，使用多个时钟域，抽头延迟线和时钟调整电路来证明ADPLL中的参考点和直接点注入点的精确对准。

3. 发明申请

US20070188244A1 Harmonic Characterization and Correction of Device Mismatch 有权
标题翻译：谐波特征和装置不匹配的校正
公开(公告)号：US20070188244A1
公开(公告)日：2007-08-16
申请号：US11618605
申请日：2006-12-29
申请人： Khurram Waheed , Robert B. Staszewski
发明人： Khurram Waheed , Robert B. Staszewski
IPC分类号： H03L7/00
CPC分类号： H03L7/099 , H03L7/10 , H03L2207/50
摘要： A novel apparatus for and method of harmonic characterization and ratio correction of device mismatch between coarse and fine varactor tuning devices within a segmented unified varactor bank of a radio frequency (RF) digitally controlled oscillator (DCO). The DCO uses a single unified bank of varactors that is divided into an MSB bank, LSB bank and sigma-delta (SD-LSB) bank. Any ratio mismatches between MSBs and LSBs are digitally calibrated out using a DCO step-size pre-distortion scheme wherein the LSB steps are adjusted to account for the ratio mismatch between the MSB/LSB step sizes. A harmonic characterization technique is used to estimate the mismatches in the minimal size CMOS tuning varactors of a digitally controlled RF oscillator (DCO), wherein the nominal ratio mismatch between the MSB and LSB devices is estimated using hybrid stochastic gradient DCO gain estimation algorithms. The nominal ratio mismatch and the mismatches in the MSB and LSB banks are used to determine the average MSB/LSB mismatch. The average mismatch value is then used to correct the LSB steps.
摘要翻译：一种用于射频（RF）数字控制振荡器（DCO）的分段式统一变容管组内的粗调和精细变容二极管调谐装置之间的器件失配的谐波表征和比率校正的新型装置和方法。 DCO使用分为MSB库，LSB库和Σ-Δ（SD-LSB）库的单个统一的变容二极管组。使用DCO步长预失真方案对MSB和LSB之间的任何比例不匹配进行数字校准，其中LSB步长被调整以考虑MSB / LSB步长之间的比率失配。使用谐波表征技术来估计数字控制RF振荡器（DCO）的最小尺寸CMOS调谐变容二极管中的不匹配，其中使用混合随机梯度DCO增益估计算法来估计MSB和LSB器件之间的标称比率失配。标称比例失配和MSB和LSB组中的不匹配用于确定平均MSB / LSB失配。然后使用平均不匹配值来校正LSB步长。

4. 发明授权

US09020454B2 Linearization and calibration predistortion of a digitally controlled power amplifier 有权
标题翻译：数字控制功率放大器的线性化和校准预失真
公开(公告)号：US09020454B2
公开(公告)日：2015-04-28
申请号：US13481450
申请日：2012-05-25
申请人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
发明人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425
摘要： An apparatus and method of linearization of a digitally-controlled pre-power amplifier (DPA) and RF power amplifier (PA) for performing predistortion calibration to compensate for nonlinearlities in the DPA and PA circuits. A predistortion look up table (LUT) stores measured distortion compensation data that is applied to the TX data before being input to the digital-to-frequency converter (DFC), DPA and PA. The on-chip receiver, which is normally inactive during the TX burst in a half-duplex operation, demodulates the RF PA output and uses the digital I/Q RX outputs to perform calibration of the TX pre-distortion tables. A sample of the RF output signal is provided to the receiver chain. While the PA (DPA) code is increasing (or decreasing), the amplitude and phase of the recovered I/Q samples are used to determine the instantaneous value of the AM/AM and AM/PM pre-distortion from which an update to the predistortion tables may be computed.
摘要翻译：用于执行预失真校准以补偿DPA和PA电路中的非线性的数字控制的预功率放大器（DPA）和RF功率放大器（PA）的线性化的装置和方法。预失真查询表（LUT）存储在被输入到数字 - 频率转换器（DFC），DPA和PA之前施加到TX数据的测量失真补偿数据。在半双工操作期间TX突发期间通常不工作的片上接收器解调RF PA输出并使用数字I / Q RX输出来执行TX预失真表的校准。将RF输出信号的样本提供给接收器链。当PA（DPA）代码正在增加（或减小）时，恢复的I / Q采样的振幅和相位用于确定AM / AM和AM / PM预失真的瞬时值，可以计算预失真表。

5. 发明申请

US20070188243A1 FREQUENCY TUNING RANGE EXTENSION AND MODULATION RESOLUTION ENHANCEMENT OF A DIGITALLY CONTROLLED OSCILLATOR 有权
标题翻译：频率调谐范围扩展和调制分辨率增强数字控制振荡器
公开(公告)号：US20070188243A1
公开(公告)日：2007-08-16
申请号：US11618034
申请日：2006-12-29
申请人： Khurram Waheed , Siraj Akhtar , Robert B. Staszewski
发明人： Khurram Waheed , Siraj Akhtar , Robert B. Staszewski
IPC分类号： H03L7/00
CPC分类号： H03L7/099 , H03C5/00 , H03L7/10 , H03L2207/50
摘要： A novel apparatus and method of extending the frequency tuning range and improving the modulation resolution of an RF digitally controlled oscillator (DCO). In addition to the coarse PVT MIM varactor bank, the DCO uses a single unified bank of varactors that is further subdivided divided into an MSB bank, LSB bank and sigma-delta (SD-LSB) bank. Any ratio mismatches between MSBs and LSBs are digitally calibrated out using a DCO step-size pre-distortion scheme wherein the LSB steps are adjusted to account for the ratio mismatch between the MSB/LSB step sizes. A harmonic characterization technique is used to estimate the mismatches in the minimal size CMOS tuning varactors of a digitally controlled RF oscillator (DCO), wherein the nominal ratio mismatch between the MSB and LSB devices is estimated using hybrid stochastic gradient DCO gain estimation algorithms. The nominal ratio mismatch and the mismatches in the MSB and LSB banks are used to determine the average MSB/LSB mismatch. The average mismatch value is then used to correct the LSB steps.
摘要翻译：一种扩展频率调谐范围并提高RF数字控制振荡器（DCO）的调制分辨率的新型装置和方法。除了粗略的PVT MIM变容二极管组外，DCO还使用单个统一的变容二极管组，进一步细分为MSB组，LSB组和Σ-Δ（SD-LSB）组。使用DCO步长预失真方案对MSB和LSB之间的任何比例不匹配进行数字校准，其中LSB步长被调整以考虑MSB / LSB步长之间的比率失配。使用谐波表征技术来估计数字控制RF振荡器（DCO）的最小尺寸CMOS调谐变容二极管中的不匹配，其中使用混合随机梯度DCO增益估计算法来估计MSB和LSB器件之间的标称比率失配。标称比例失配和MSB和LSB组中的不匹配用于确定平均MSB / LSB失配。然后使用平均不匹配值来校正LSB步长。

6. 发明授权

US07714665B2 Harmonic characterization and correction of device mismatch 有权
标题翻译：器件不匹配的谐波特性和校正
公开(公告)号：US07714665B2
公开(公告)日：2010-05-11
申请号：US11618605
申请日：2006-12-29
申请人： Khurram Waheed , Robert B. Staszewski
发明人： Khurram Waheed , Robert B. Staszewski
IPC分类号： H03L7/099
CPC分类号： H03L7/099 , H03L7/10 , H03L2207/50
摘要： An apparatus and method fore harmonic characterization and ratio correction of device mismatch between coarse and fine varactor tuning devices within a segmented unified varactor bank of an (RF) digitally controlled oscillator (DCO). The DCO is divided into an MSB bank, LSB bank and sigma-delta (SD-LSB) bank. Any ratio mismatches between MSBs and LSBs are digitally calibrated out using a DCO step-size pre-distortion scheme wherein LSB steps are adjusted to account for ratio mismatch between the MSB/LSB step sizes. A harmonic characterization technique is used to estimate the mismatches in the minimal size CMOS tuning varactors of a digitally controlled RF oscillator (DCO), wherein nominal ratio mismatch between the MSB and LSB devices is estimated using hybrid stochastic gradient DCO gain estimation algorithms. The nominal ratio mismatch and the mismatches in MSB and LSB banks are used to determine average MSB/LSB mismatch which is then used to correct the LSB steps.
摘要翻译：一种用于（RF）数字控制振荡器（DCO）的分段统一变容管组内的粗调和微分变容二极管调谐装置之间的谐波表征和比率校正的装置和方法。 DCO分为MSB组，LSB组和Σ-Δ（SD-LSB）组。使用DCO步长预失真方案对MSB和LSB之间的任何比例不匹配进行数字校准，其中调整LSB步长以考虑MSB / LSB步长之间的比率失配。使用谐波表征技术来估计数字控制RF振荡器（DCO）的最小尺寸CMOS调谐变容二极管中的不匹配，其中使用混合随机梯度DCO增益估计算法来估计MSB和LSB器件之间的标称比率失配。标称比例失配和MSB和LSB组中的不匹配用于确定平均MSB / LSB失配，然后用于校正LSB步长。

7. 发明申请

US20080218282A1 Hybrid Stochastic Gradient Based Digitally Controlled Oscillator Gain KDCO Estimation 有权
标题翻译：混合随机梯度数字控制振荡器增益KDCO估计
公开(公告)号：US20080218282A1
公开(公告)日：2008-09-11
申请号：US12111813
申请日：2008-04-29
申请人： Khurram Waheed , Robert B. Staszewski
发明人： Khurram Waheed , Robert B. Staszewski
IPC分类号： H03L7/099
CPC分类号： H03B5/04 , H03L2207/50
摘要： A novel hybrid stochastic gradient adaptation apparatus and method for calibrating the gain of an RF or non-RF digitally controlled oscillator (DCO). The adaptation algorithm determines a true stochastic gradient between a forcing function and its corresponding system measure to estimate the system parameters being adapted. A momentum term is generated and injected into the adaptation algorithm in order to stabilize the algorithm by adding inertia against any large transient variations in the input data. In the case of adaptation of DCO gain KDCO, the algorithm determines the stochastic gradient between time varying calibration or actual modulation data and the raw phase error accumulated in an all digital phase locked loop (ADPLL). Two filters preprocess the observable data to limit the bandwidth of the computed stochastic gradient providing a trade-off between sensitivity and settling time.
摘要翻译：一种用于校准RF或非RF数字控制振荡器（DCO）的增益的新型混合随机梯度自适应装置和方法。自适应算法确定强制功能与其对应的系统测量之间的真实随机梯度，以估计适应的系统参数。产生动量项并将其注入到自适应算法中，以通过对输入数据中的任何大的瞬态变化添加惯性来稳定算法。在适应DCO增益K DC DC的情况下，算法确定时变校准或实际调制数据与在所有数字锁相环（ADPLL）中累积的原始相位误差之间的随机梯度。两个滤波器预处理可观测数据，以限制计算出的随机梯度的带宽，从而提供灵敏度和建立时间之间的折衷。

8. 发明申请

US20080068236A1 Adaptive spectral noise shaping to improve time to digital converter quantization resolution using dithering 有权
标题翻译：自适应光谱噪声整形，以改善使用抖动的数字转换器量化分辨率的时间
公开(公告)号：US20080068236A1
公开(公告)日：2008-03-20
申请号：US11853182
申请日：2007-09-11
申请人： Mahbuba Moyeena Sheba , Robert B. Staszewski , Khurram Waheed
发明人： Mahbuba Moyeena Sheba , Robert B. Staszewski , Khurram Waheed
IPC分类号： H03M1/20 , H03M1/06
CPC分类号： G04F10/005
摘要： A novel and useful apparatus for and method of improving the quantization resolution of a time to digital converter in a digital PLL using noise shaping. The TDC quantization noise shaping scheme is effective to reduce the TDC quantization noise to acceptable levels especially in the case of integer-N channel operation. The mechanism monitors the output of the TDC circuit and adaptively generates a dither (i.e. delay) sequence based on the output. The dither sequence is applied to the frequency reference clock used in the TDC which adjusts the timing alignment between the edges of the frequency reference clock and the RF oscillator clock. The dynamic alignment changes effectively shape the quantization noise of the TDC. By shaping the quantization noise, a much finer in-band TDC resolution is achieved resulting in the quantization noise being pushed out to high frequencies where the PLL low pass characteristic effectively filters it out.
摘要翻译：一种用于提高使用噪声整形的数字PLL中的时间到数字转换器的量化分辨率的新颖有用的装置和方法。 TDC量化噪声整形方案有效地将TDC量化噪声降低到可接受的水平，特别是在整数N信道操作的情况下。该机制监视TDC电路的输出，并根据输出自适应地生成抖动（即延迟）序列。抖动序列被应用于TDC中使用的频率参考时钟，该频率参考时钟调整频率参考时钟的边沿与RF振荡器时钟之间的定时对准。动态对准改变有效地塑造了TDC的量化噪声。通过整形量化噪声，实现了更精细的带内TDC分辨率，导致量化噪声被推出到高频，其中PLL低通特性有效地滤除它。

9. 发明申请

US20070190952A1 LINEARIZATION OF A TRANSMIT AMPLIFIER 有权
标题翻译：发射放大器的线性化
公开(公告)号：US20070190952A1
公开(公告)日：2007-08-16
申请号：US11675582
申请日：2007-02-15
申请人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
发明人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425
摘要： A novel apparatus and method of linearization of a digitally controlled pre-power amplifier (DPA) and RF power amplifier (PA). The mechanism is operative to perform predistortion calibration to compensate for nonlinearities in the DPA and PA circuits. A predistortion look up table (LUT) stores measured distortion compensation data that is applied to the TX data before being input to the digital to frequency converter (DFC), DPA and PA. The mechanism of the invention takes advantage of the on-chip receiver, which is normally inactive during the TX burst in a half-duplex operation, to demodulate the RF PA output and use the digital I/Q RX outputs to perform calibration of the TX pre-distortion tables. Controlled RF coupling is used to provide a sample of the RF output signal that to the receiver chain. The contents of the predistortion LUT are typically updated during the PA power up or down ramp. While the digitally-controlled PA (DPA) code is increasing (or decreasing), the amplitude and phase of the recovered I/Q samples are used to determine the instantaneous value of the AM/AM and AM/PM pre-distortion from which an update to the predistortion tables may be computed.
摘要翻译：一种数字控制的预功率放大器（DPA）和RF功率放大器（PA）的线性化的新型装置和方法。该机制可用于执行预失真校准，以补偿DPA和PA电路中的非线性。预失真查询表（LUT）存储在被输入到数字到频率转换器（DFC），DPA和PA之前施加到TX数据的测量失真补偿数据。本发明的机制利用在半双工操作期间的TX突发期间通常不工作的片上接收机来解调RF PA输出并使用数字I / Q RX输出来执行TX的校准预失真表。受控RF耦合用于向接收机链提供RF输出信号的采样。预失真LUT的内容通常在PA上电或下降斜坡期间更新。当数字控制的PA（DPA）码增加（或减小）时，恢复的I / Q采样的振幅和相位用于确定AM / AM和AM / PM预失真的瞬时值，可以计算对预失真表的更新。

10. 发明申请

US20120263256A1 LINEARIZATION OF A TRANSMIT AMPLIFIER 审中-公开
标题翻译：发射放大器的线性化
公开(公告)号：US20120263256A1
公开(公告)日：2012-10-18
申请号：US13481450
申请日：2012-05-25
申请人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
发明人： Khurram Waheed , Robert B. Staszewski , Sameh S. Rezeq , Oren E. Eliezer
IPC分类号： H04L25/49
CPC分类号： H04B1/0475 , H03F1/3241 , H04B2001/0425
摘要： An apparatus and method of linearization of a digitally-controlled pre-power amplifier (DPA) and RF power amplifier (PA) for performing predistortion calibration to compensate for nonlinearlities in the DPA and PA circuits. A predistortion look up table (LUT) stores measured distortion compensation data that is applied to the TX data before being input to the digital-to-frequency converter (DFC), DPA and PA. The on-chip receiver, which is normally inactive during the TX burst in a half-duplex operation, demodulates the RF PA output and uses the digital I/Q RX outputs to perform calibration of the TX pre-distortion tables. A sample of the RF output signal is provided to the receiver chain. While the PA (DPA) code is increasing (or decreasing), the amplitude and phase of the recovered I/Q samples are used to determine the instantaneous value of the AM/AM and AM/PM pre-distortion from which an update to the predistortion tables may be computed.
摘要翻译：用于执行预失真校准以补偿DPA和PA电路中的非线性的数字控制的预功率放大器（DPA）和RF功率放大器（PA）的线性化的装置和方法。预失真查询表（LUT）存储在被输入到数字 - 频率转换器（DFC），DPA和PA之前施加到TX数据的测量失真补偿数据。在半双工操作期间TX突发期间通常不工作的片上接收器解调RF PA输出并使用数字I / Q RX输出来执行TX预失真表的校准。将RF输出信号的样本提供给接收器链。当PA（DPA）代码正在增加（或减小）时，恢复的I / Q采样的振幅和相位用于确定AM / AM和AM / PM预失真的瞬时值，可以计算预失真表。

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