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1. 发明授权

US08351558B2 Multiphase direct RF frequency to digital converter and related method 有权
标题翻译：多相直接射频到数字转换器及相关方法
公开(公告)号：US08351558B2
公开(公告)日：2013-01-08
申请号：US12567427
申请日：2009-09-25
申请人： Richard H. Strandberg , Paul Cheng-Po Liang
发明人： Richard H. Strandberg , Paul Cheng-Po Liang
IPC分类号： H03D3/00 , H03D3/24 , G01R25/00 , H04L7/04
CPC分类号： H04L27/18
摘要： The disclosure provides an effective means for fine-resolution determination of the frequency content of an RF signal using low speed digital circuits. The disclosure relates to a method and apparatus for decomposing a high frequency RF signal into several low frequency signals or data streams without loss of any information and without the use of extraneous circuit components such as local oscillators, mixers or offset phase-locked loops. Single or multiple phase oscillator outputs are fed directly to a single or multiple direct RF frequency-to-digital (DrfDC) circuits. The front end of the DrfDC circuit decomposes a high frequency signal into several low frequency signals without loss of any information. The low frequency signals are processed by the back-end of the DrfDC and converted into digital data streams. The digital data streams are then combined and averaged to represent the frequency of the input RF signal.
摘要翻译：本公开提供了使用低速数字电路精细分辨率确定RF信号的频率内容的有效手段。本公开涉及一种用于将高频RF信号分解为几个低频信号或数据流而不丢失任何信息并且不使用诸如本地振荡器，混频器或偏移锁相环之类的外部电路部件的方法和装置。单相或多相振荡器输出直接馈送到单个或多个直接RF频数（DrfDC）电路。 DrfDC电路的前端将高频信号分解成几个低频信号，而不会丢失任何信息。低频信号由DrfDC的后端处理并转换为数字数据流。然后将数字数据流组合并平均以表示输入RF信号的频率。

2. 发明申请

US20110075755A1 MULTIPHASE DIRECT RF FREQUENCY TO DIGITAL CONVERTER AND RELATED METHOD 有权
标题翻译：多相直接RF频率到数字转换器及相关方法
公开(公告)号：US20110075755A1
公开(公告)日：2011-03-31
申请号：US12567427
申请日：2009-09-25
申请人： Richard H. Strandberg , Paul Cheng-Po Liang
发明人： Richard H. Strandberg , Paul Cheng-Po Liang
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L27/18
摘要： The disclosure provides an effective means for fine-resolution determination of the frequency content of an RF signal using low speed digital circuits. The disclosure relates to a method and apparatus for decomposing a high frequency RF signal into several low frequency signals or data streams without loss of any information and without the use of extraneous circuit components such as local oscillators, mixers or offset phase-locked loops. Single or multiple phase oscillator outputs are fed directly to a single or multiple direct RF frequency-to-digital (DrfDC) circuits. The front end of the DrfDC circuit decomposes a high frequency signal into several low frequency signals without loss of any information. The low frequency signals are processed by the back-end of the DrfDC and converted into digital data streams. The digital data streams are then combined and averaged to represent the frequency of the input RF signal.
摘要翻译：本公开提供了使用低速数字电路精细分辨率确定RF信号的频率内容的有效手段。本公开涉及一种用于将高频RF信号分解为几个低频信号或数据流而不丢失任何信息并且不使用诸如本地振荡器，混频器或偏移锁相环之类的外部电路部件的方法和装置。单相或多相振荡器输出直接馈送到单个或多个直接RF频数（DrfDC）电路。 DrfDC电路的前端将高频信号分解成几个低频信号，而不会丢失任何信息。低频信号由DrfDC的后端处理并转换为数字数据流。然后将数字数据流组合并平均以表示输入RF信号的频率。

3. 发明申请

US20080045163A1 Methods and apparatus for conditioning low-magnitude events in communications signals 有权
标题翻译：用于调节通信信号中低幅度事件的方法和装置
公开(公告)号：US20080045163A1
公开(公告)日：2008-02-21
申请号：US11505746
申请日：2006-08-17
申请人： Richard H. Strandberg , Paul Cheng-Po Liang
发明人： Richard H. Strandberg , Paul Cheng-Po Liang
IPC分类号： H04B1/02
CPC分类号： H04L27/362 , H03F1/0205 , H03F1/0211 , H03F3/24 , H03F2200/336 , H03F2200/451 , H04L27/367
摘要： Methods and apparatus for conditioning low-magnitude events in electrical signals. According to an exemplary method, a low-magnitude event occurring in a signal trajectory of a received electrical signal is analyzed. The low-magnitude event is defined by a data point on a signal trajectory having a magnitude that is less than a predetermined signal magnitude minimum. A correction impulse having a correction magnitude and a correction phase is generated based on the magnitude and phase of data points on the signal trajectory that occur prior to and after the occurrence of the low magnitude event. The correction impulse is combined with the original electrical signal in the temporal vicinity of the low-magnitude event, thereby generating a corrected electrical signal having a more controlled bandwidth.
摘要翻译：用于调节电信号中低电平事件的方法和装置。根据示例性方法，分析在接收的电信号的信号轨迹中发生的低幅度事件。低幅度事件由具有小于预定信号幅度最小值的信号轨迹上的数据点定义。基于在低幅度事件发生之前和之后发生的信号轨迹上的数据点的大小和相位，产生具有校正幅度和校正相位的校正脉冲。校正脉冲与低电平事件的时间附近的原始电信号组合，从而产生具有更多受控带宽的校正电信号。

4. 发明授权

US07675995B2 Apparatus and method for conditioning a modulated signal in a communications device 有权
标题翻译：用于调节通信设备中的调制信号的装置和方法
公开(公告)号：US07675995B2
公开(公告)日：2010-03-09
申请号：US11274068
申请日：2005-11-14
申请人： Paul Cheng-Po Liang , Richard H. Strandberg
发明人： Paul Cheng-Po Liang , Richard H. Strandberg
IPC分类号： H03C3/00 , H03K7/06 , H04L27/12
CPC分类号： H04L27/205
摘要： A device for transmitting information in a communications signal is envisioned. The information is modulated, at least in part, with a first angle-related characteristic. The device has a digital conversion circuit operable to convert information to be broadcast into a digital form. A constellation mapper is coupled to the digital conversion circuit, and is operable to convert the digital information into information associated with a constellation. A trajectory generation circuit generates samples denoting a trajectory within the constellation for the information. A transition analysis circuit determines a change in value of an angle-related characteristic in a transition between two samples, and a threshold detection circuit detects whether the change in value fails to meet a particular threshold. An angle-related characteristic distribution circuit can then distribute a portion of the change in value associated with the transition to at least one other transition.
摘要翻译：设想在通信信号中发送信息的装置。该信息至少部分地利用第一角度相关特征进行调制。该装置具有数字转换电路，可操作以将待广播的信息转换为数字形式。星座映射器耦合到数字转换电路，并且可操作以将数字信息转换为与星座相关联的信息。轨迹生成电路生成表示信息星座内的轨迹的样本。转移分析电路确定两个采样之间的转换中的角度相关特性的值的变化，并且阈值检测电路检测值的变化是否不符合特定阈值。角度相关特征分布电路然后可以将与转换相关联的值的变化的一部分分配给至少一个其他转变。

5. 发明申请

US20080219331A1 Methods and apparatus for reducing the effects of DAC images in radio frequency transceivers 审中-公开
标题翻译：减少DAC图像在射频收发器中的影响的方法和装置
公开(公告)号：US20080219331A1
公开(公告)日：2008-09-11
申请号：US11715539
申请日：2007-03-07
申请人： Paul Cheng-Po Liang , Richard H. Strandberg
发明人： Paul Cheng-Po Liang , Richard H. Strandberg
IPC分类号： H04L5/16
CPC分类号： H04B1/0475 , H03M3/344 , H03M3/376 , H03M3/50 , H04B1/525
摘要： Methods and apparatus for reducing the effects of digital-to-analog converter (DAC) images and transmission spurious effects in a receive frequency band of a radio frequency (RF) transceiver. A transceiver apparatus includes a transmitter portion having a DAC, a receiver portion configured to receive RF signals in a receive frequency band, and a variable rate clock generator. The variable rate clock generator is used to provide an oversampling clock for the DAC. The rate of the oversampling clock is adjustable and is selected so that an upconverted version of a DAC image created by the DAC is steered away from frequencies within the receive frequency band. A notch-effect low-pass filter (NELPF) may also, or alternatively, be used in the transceiver to reduce transmission spurious effects in the receive frequency band.
摘要翻译：用于降低数模转换器（DAC）图像和射频（RF）收发器的接收频带中的传输杂散效应的影响的方法和装置。收发器装置包括具有DAC的发送器部分，被配置为在接收频带中接收RF信号的接收器部分和可变速率时钟发生器。可变速率时钟发生器用于为DAC提供过采样时钟。过采样时钟的速率是可调节的并且被选择，使得由DAC创建的DAC图像的上变换版本被转移远离接收频带内的频率。陷波效应低通滤波器（NELPF）也可以或替代地用于收发器中以减少接收频带中的传输杂散效应。

6. 发明授权

US07603089B2 Methods and apparatus for conditioning low-magnitude events in communications signals 有权
标题翻译：用于调节通信信号中低幅度事件的方法和装置
公开(公告)号：US07603089B2
公开(公告)日：2009-10-13
申请号：US11505746
申请日：2006-08-17
申请人： Richard H. Strandberg , Paul Cheng-Po Liang
发明人： Richard H. Strandberg , Paul Cheng-Po Liang
IPC分类号： H04B1/02
CPC分类号： H04L27/362 , H03F1/0205 , H03F1/0211 , H03F3/24 , H03F2200/336 , H03F2200/451 , H04L27/367
摘要： Methods and apparatus for conditioning low-magnitude events in electrical signals. According to an exemplary method, a low-magnitude event occurring in a signal trajectory of a received electrical signal is analyzed. The low-magnitude event is defined by a data point on a signal trajectory having a magnitude that is less than a predetermined signal magnitude minimum. A correction impulse having a correction magnitude and a correction phase is generated based on the magnitude and phase of data points on the signal trajectory that occur prior to and after the occurrence of the low magnitude event. The correction impulse is combined with the original electrical signal in the temporal vicinity of the low-magnitude event, thereby generating a corrected electrical signal having a more controlled bandwidth.
摘要翻译：用于调节电信号中低电平事件的方法和装置。根据示例性方法，分析在接收的电信号的信号轨迹中发生的低幅度事件。低幅度事件由具有小于预定信号幅度最小值的信号轨迹上的数据点定义。基于在低幅度事件发生之前和之后发生的信号轨迹上的数据点的大小和相位，产生具有校正幅度和校正相位的校正脉冲。校正脉冲与低电平事件的时间附近的原始电信号组合，从而产生具有更多受控带宽的校正电信号。

7. 发明授权

US08331490B2 Methods and apparatus for conditioning communications signals based on detection of high-frequency events in polar domain 有权
标题翻译：基于极地域高频事件检测的通信信号调理方法和装置
公开(公告)号：US08331490B2
公开(公告)日：2012-12-11
申请号：US12395981
申请日：2009-03-02
申请人： Hua Wang , Paul Cheng-Po Liang , Richard W. D. Booth , Stephan V. Schell , Thomas E. Biedka
发明人： Hua Wang , Paul Cheng-Po Liang , Richard W. D. Booth , Stephan V. Schell , Thomas E. Biedka
IPC分类号： H04L27/20
CPC分类号： H04L25/03866
摘要： Methods and apparatus for conditioning communications signals based on detection of high-frequency in the polar domain. High-frequency events detected in a phase-difference component of a complex baseband signal in the polar domain are detected and used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain. Alternatively, high-frequency events detected in the phase-difference signal that correlate in time with low-magnitude events detected in a magnitude component of the complex baseband signal are used as a basis for performing hole-blowing on the complex baseband signal in the quadrature domain and/or nonlinear filtering either or both the magnitude and phase-difference components in the polar domain.
摘要翻译：基于极区域中高频检测的通信信号调理方法和装置。检测在极坐标域中的复基带信号的相差分量中检测到的高频事件，并将其用作在正交域中的复基带信号上执行空气吹扫和/或非线性滤波的基础极化域中的幅度和相位差分量。或者，在相位差信号中检测到的与在复基带信号的幅度分量中检测到的低幅度事件相关的高频事件被用作在正交中的复基带信号上执行吹空的基础域和/或非线性滤波极化域中的幅度和相位差分量之一或两者。

8. 发明授权

US08222939B2 Method and system for a glitch correction in an all digital phase lock loop 有权
标题翻译：全数字锁相环中毛刺校正的方法和系统
公开(公告)号：US08222939B2
公开(公告)日：2012-07-17
申请号：US12838754
申请日：2010-07-19
申请人： Koji Takinami , Richard Strandberg , Paul Cheng-Po Liang
发明人： Koji Takinami , Richard Strandberg , Paul Cheng-Po Liang
IPC分类号： H03L7/06
CPC分类号： H03L7/16 , H03L2207/50
摘要： The present invention relates to a method and system for glitch correction in an all digital phase lock loop. An all digital phase lock loop can include a phase error signal generation unit, a multi-phase oscillator, a glitch correction unit, and a phase to digital converter. The phase to digital converter receives a multi-phase signal from the multi-phase oscillator and generates a phase signal. The error signal generation unit receives the phase signal and a reference phase signal and generates a phase error signal, which is fed to the glitch correction unit. The glitch correction unit removes the glitches in the phase error signal by a portion of the phase error signal. The phase lock loop can also include a phase rotator and a calibration block. The calibration block instructs the phase rotator to rotate the multi-phase signal by the phase rotation which generates the minimum number of glitches.
摘要翻译：本发明涉及一种全数字锁相环中毛刺校正的方法和系统。全数字锁相环可以包括相位误差信号生成单元，多相位振荡器，毛刺校正单元和相位数字转换器。相数转换器从多相振荡器接收多相信号并产生相位信号。误差信号发生单元接收相位信号和参考相位信号，并产生馈送到毛刺校正单元的相位误差信号。毛刺校正单元通过相位误差信号的一部分去除相位误差信号中的毛刺。锁相环还可以包括相位旋转器和校准块。校准块指示相位旋转器通过相位旋转旋转多相信号，该相位旋转产生最小数量的毛刺。

9. 发明申请

US20110018640A1 TRANSMITTER UTILIZING A DUTY CYCLE ENVELOPE REDUCTION AND RESTORATION MODULATOR 有权
标题翻译：发射机利用占空比减少和恢复调制器
公开(公告)号：US20110018640A1
公开(公告)日：2011-01-27
申请号：US12508464
申请日：2009-07-23
申请人： Paul Cheng-Po Liang , Koji Takinami , Toru Matsuura
发明人： Paul Cheng-Po Liang , Koji Takinami , Toru Matsuura
IPC分类号： H03F1/00
CPC分类号： H03F1/0227 , H03F1/02 , H03F3/189 , H03F3/24 , H03F2200/336 , H03F2200/351 , H04B2001/045
摘要： A broad power band transmitter utilizing a duty cycle modulator achieves 80dB of power range for 3G signals. The present invention greatly improves the efficiency of transmitters used in mobile phones, for example, by using the duty cycle modulator during medium and low power levels of the transmitting power amplifier. The power amplifier operates in three different modes based upon the amplifier power level selected. The power amplifier operates in an EER mode during high power levels, in a DCM ERR mode during medium power levels, and in a DCM mode during low power levels.
摘要翻译：利用占空比调制器的宽带功率带发射机实现3G信号的80dB的功率范围。本发明大大提高了在移动电话中使用的发射机的效率，例如通过在发射功率放大器的中等和低功率电平期间使用占空比调制器。功率放大器基于选择的放大器功率电平在三种不同的模式下工作。功率放大器在高功率电平下处于EER模式，在中等功率电平下处于DCM ERR模式，在低功率级下处于DCM模式。

10. 发明申请

US20100316164A1 Methods and Apparatus for Reducing Average-to-Minimum Power Ratio in Communications Signals 有权
标题翻译：用于降低通信信号中的平均到最小功率比的方法和装置
公开(公告)号：US20100316164A1
公开(公告)日：2010-12-16
申请号：US12482913
申请日：2009-06-11
申请人： Paul Cheng-Po Liang , Hua Wang , Kenichi Mori
发明人： Paul Cheng-Po Liang , Hua Wang , Kenichi Mori
IPC分类号： H04L27/36 , H04L27/00
CPC分类号： H04L27/363 , H03F1/3241 , H03F3/24 , H04L27/361
摘要： A baseband circuit for a communications transmitter includes a baseband modulator, a pulse-shaping filter, and an AMPR reduction circuit. The baseband modulator is configured to generate a sequence of symbols formatted in accordance with a non-constant envelope modulation scheme. The pulse-shaping filter is configured to band-limit the sequence of samples to provide a sequence of samples. The AMPR reduction circuit is configured to analyze and modify one or more samples in the sequence of samples, if a sample in the sequence of samples that has been previously analyzed by the AMPR reduction circuit is determined to have a magnitude less than a predetermined low-magnitude threshold.
摘要翻译：用于通信发射机的基带电路包括基带调制器，脉冲整形滤波器和AMPR降低电路。基带调制器被配置为生成根据非恒定包络调制方案格式化的符号序列。脉冲整形滤波器被配置为限制样本序列以提供样本序列。 AMPR降低电路被配置为分析和修改样本序列中的一个或多个样本，如果已经由AMPR降低电路先前分析的样本序列中的样本被确定为具有小于预定低通滤波器的幅度，幅度阈值。

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