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    • 1. 发明申请
    • DIGITAL RF PHASE CONTROL IN POLAR MODULATION TRANSMITTERS
    • 极性调制变送器中的数字RF相控制
    • US20100009641A1
    • 2010-01-14
    • US12172125
    • 2008-07-11
    • Saleh OsmanWayne S. LeeEarl W. McCune, JR.
    • Saleh OsmanWayne S. LeeEarl W. McCune, JR.
    • H04B1/04
    • H04B1/036
    • An exemplary modulator apparatus for a polar modulation transmitter includes a phase difference extractor, a phase modulator, and a coarse phase controller. The phase difference extractor is configured to extract +180° and −180° phase differences represented in a phase-difference modulation signal in a phase modulation path of the polar modulation transmitter, or extract other phase differences exceeding other predetermined phase difference thresholds, to produce a bandwidth-reduced phase-difference modulation signal. The phase modulator includes a controlled oscillator having a tuning port that is modulated by phase differences represented in the bandwidth-reduced phase-difference modulation signal, to produce a phase-modulated RF carrier signal. The coarse phase controller operates to effectuate phase reversals or introduce other coarse phase changes into the phase-modulated RF carrier signal, based on the phase differences extracted from the original phase-difference modulation signal.
    • 用于极性调制发射机的示例性调制器装置包括相位差提取器,相位调制器和粗略相位控制器。 相位差提取器被配置为提取极坐标调制发射机的相位调制路径中的相位差调制信号中表示的+ 180°和-180°相位差,或者提取超过其他预定相位差阈值的其他相位差,以产生 带宽减小的相位差调制信号。 相位调制器包括受控振荡器,该控制振荡器具有调制端口,该调谐端口由在带宽减小的相位差调制信号中表示的相位差进行调制,以产生相位调制的RF载波信号。 基于从原始相位差调制信号提取的相位差,粗略相位控制器操作以实现相位反转或将其它粗略相位变化引入相位调制RF载波信号。
    • 2. 发明申请
    • ADAPTIVE DELAY ALIGNMENT IN POLAR TRANSMITTERS
    • 极性发射机的自适应延迟对准
    • US20100124889A1
    • 2010-05-20
    • US12272037
    • 2008-11-17
    • Saleh OsmanEarl W. McCune, JR.
    • Saleh OsmanEarl W. McCune, JR.
    • H04B1/02H04B1/04
    • H04B1/0483
    • A polar transmitter includes a power amplifier (PA), an amplitude modulation (AM) path including an AM path adjustable delay, an AM path delay measurement circuit, a phase modulation (PM) path including a PM path adjustable delay, and a PM path delay measurement circuit. The AM path delay measurement circuit is configured to measure an AM path delay using waveform correlation, e.g., using peak magnitude events (PMEs) in signals transmitted along the AM path to a power supply port of the PA. The PM path delay measurement circuit is configured to measure a PM path delay using waveform correlation, e.g., using PMEs in signals transmitted along the PM path to a phase-modulated input of the PA. The measured AM and PM path delays are used to adjust the AM and PM path adjustable delays, to reduce the delay mismatch between signals appearing at the power supply and phase-modulated input ports of the polar transmitter's PA.
    • 极性发射机包括功率放大器(PA),包括AM路径可调延迟的调幅(AM)路径,AM路径延迟测量电路,包括PM路径可调延迟的相位调制(PM)路径和PM路径 延时测量电路。 AM路径延迟测量电路被配置为使用波形相关来测量AM路径延迟,例如,使用沿着AM路径传输到PA的电源端口的信号中的峰值幅度事件(PME)。 PM路径延迟测量电路被配置为使用波形相关性来测量PM路径延迟,例如,在沿着PM路径发送的信号中使用PME到PA的相位调制输入。 测量的AM和PM路径延迟用于调整AM和PM路径可调节延迟,以减少出现在极性发射器PA的电源和相位调制输入端口的信号之间的延迟失配。
    • 3. 发明申请
    • Delay-Based Modulation of RF Communications Signals
    • 基于延迟的RF通信信号调制
    • US20090207941A1
    • 2009-08-20
    • US12031866
    • 2008-02-15
    • Saleh OsmanEarl W. McCune, JR.
    • Saleh OsmanEarl W. McCune, JR.
    • H03C3/00H03K7/06H04L27/12
    • H04L27/12H03C3/00H03K7/06
    • An apparatus for providing an angle modulated signal includes a tunable oscillator circuit, a variable time delay circuit, and an optional scaling and delay control apparatus. The tunable oscillator circuit generates an oscillatory signal having a predetermined frequency. The variable time delay circuit operates to delay the oscillatory signal in accordance with time varying changes in an angle control signal, thereby producing the desired angle modulated signal. The scaling and delay control apparatus is configured to scale the angle control signal to account for frequency dependent phase delays of the oscillatory signal through the variable time delay circuit. The methods and apparatus of the present invention may be advantageously used in RF transmitters and receivers, such as in a polar transmitter, where the oscillatory signal generated by the tunable oscillator apparatus serves as a carrier signal, and the angle control signal used to control the delay of the variable time delay circuit comprises a phase modulation signal from the phase path of the polar transmitter.
    • 用于提供角度调制信号的装置包括可调振荡器电路,可变时间延迟电路和可选的缩放和延迟控制装置。 可调振荡器电路产生具有预定频率的振荡信号。 可变时间延迟电路用于根据角度控制信号中的时变变化来延迟振荡信号,从而产生所需的角度调制信号。 缩放和延迟控制装置被配置为通过可变时间延迟电路来缩放角度控制信号以考虑振荡信号的频率相关相位延迟。 本发明的方法和装置可以有利地用在RF发射机和接收机中,例如在极性发射机中,由可调谐振荡器产生的振荡信号用作载波信号,以及用于控制 可变时间延迟电路的延迟包括来自极性发射机的相位路径的相位调制信号。
    • 4. 发明申请
    • Phased Array Transmission Methods and Apparatus
    • 相控阵传输方法与装置
    • US20150229024A1
    • 2015-08-13
    • US14674984
    • 2015-03-31
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H01Q3/34H01Q3/28
    • H01Q3/34H01Q3/2605H01Q3/28H01Q3/30H01Q3/42
    • A phased array transmitter includes a plurality of vector modulators, an in-phase/quadrature (I/Q) signal generator, and a multiphase generator. The output phases of the plurality of vector modulators, and hence the direction of transmission of the phased array transmitter, are set and controlled by adjusting both the magnitude ratios of I/Q signal pairs generated by the I/Q signal generator and applied to I and Q inputs of the plurality of vector modulators and phases of a plurality of local oscillator (LO) signal phases generated by the multiphase generator and applied to LO inputs of the plurality of vector modulators. Setting and controlling the output phases of the vector modulators by varying both the magnitude ratios of the I/Q signal pairs and the phases of the LO signal phases allows the output phases of the plurality of vector modulators to be more precisely set and controlled than if the output phases were to be set and controlled only through the LO paths or only through the I/Q signal paths of the plurality of vector modulators.
    • 相控阵发射机包括多个矢量调制器,即同相/正交(I / Q)信号发生器和多相发生器。 多个矢量调制器的输出相位以及相控阵发射器的传输方向通过调节由I / Q信号发生器产生并应用于I的I / Q信号对的幅度比来设置和控制 多个矢量调制器的Q输入和由多相发生器产生并被施加到多个矢量调制器的LO输入端的多个本地振荡器(LO)信号相位的相位。 通过改变I / Q信号对的幅度比和LO信号相位的相位来设置和控制矢量调制器的输出相位允许多个矢量调制器的输出相位比if 仅通过LO路径或仅通过多个矢量调制器的I / Q信号路径来设置和控制输出相位。
    • 5. 发明申请
    • AC/DC Power Conversion Methods and Apparatus
    • AC / DC电源转换方法与装置
    • US20130336031A1
    • 2013-12-19
    • US13971976
    • 2013-08-21
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H02M1/42
    • H02M1/42H02M7/2176
    • An AC/DC power conversion apparatus comprises an AC/DC converter for converting AC power to DC power for a load and a controller that maintains a power factor of the load as the load varies. The AC/DC converter includes an inductor and a plurality of switches that alternately connects and disconnects the inductor to and from an AC power source, to generate the DC power for the load. The plurality of switches is controlled by a plurality of switch drive signals generated by the controller, based on comparisons of an AC voltage from the AC power source to a DC output voltage produced by the AC/DC converter. To maintain the power factor of the load, the controller is configured to adjust the frequency of the plurality of switch drive signals in response to variations in the load while holding the duty cycles of the switch drive signals constant.
    • AC / DC电力转换装置包括用于将AC电力转换为用于负载的DC电力的AC / DC转换器和在负载变化时保持负载的功率因数的控制器。 AC / DC转换器包括电感器和多个开关,其交流地将电感器与AC电源连接和断开,以产生用于负载的DC电力。 基于从AC电源的AC电压与由AC / DC转换器产生的DC输出电压的比较,多个开关由控制器产生的多个开关驱动信号控制。 为了保持负载的功率因数,控制器被配置为在保持开关驱动信号的占空比恒定的同时响应于负载的变化来调节多个开关驱动信号的频率。
    • 6. 发明申请
    • PHASED ARRAY TRANSMISSION METHODS AND APPARATUS
    • 相序阵列传输方法和设备
    • US20130120190A1
    • 2013-05-16
    • US13295311
    • 2011-11-14
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H01Q3/00
    • H01Q3/34H01Q3/2605H01Q3/28H01Q3/30H01Q3/42
    • A phased array transmitter includes a plurality of vector modulators, an in-phase/quadrature (I/Q) signal generator, and a multiphase generator. The output phases of the plurality of vector modulators, and hence the direction of transmission of the phased array transmitter, are set and controlled by adjusting both the magnitude ratios of I/Q signal pairs generated by the I/Q signal generator and applied to I and Q inputs of the plurality of vector modulators and phases of a plurality of local oscillator (LO) signal phases generated by the multiphase generator and applied to LO inputs of the plurality of vector modulators. Setting and controlling the output phases of the vector modulators by varying both the magnitude ratios of the I/Q signal pairs and the phases of the LO signal phases allows the output phases of the plurality of vector modulators to be more precisely set and controlled than if the output phases were to be set and controlled only through the LO paths or only through the I/Q signal paths of the plurality of vector modulators.
    • 相控阵发射机包括多个矢量调制器,即同相/正交(I / Q)信号发生器和多相发生器。 多个矢量调制器的输出相位以及相控阵发射器的传输方向通过调节由I / Q信号发生器产生并应用于I的I / Q信号对的幅度比来设置和控制 多个矢量调制器的Q输入和由多相发生器产生并被施加到多个矢量调制器的LO输入端的多个本地振荡器(LO)信号相位的相位。 通过改变I / Q信号对的幅度比和LO信号相位的相位来设置和控制矢量调制器的输出相位允许多个矢量调制器的输出相位比if 仅通过LO路径或仅通过多个矢量调制器的I / Q信号路径来设置和控制输出相位。
    • 8. 发明申请
    • Communications Transmitter Having High-Efficiency Combination Modulator
    • 具有高效率组合调制器的通信发射机
    • US20140247907A1
    • 2014-09-04
    • US14273499
    • 2014-05-08
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H04L27/20
    • H04L27/20H04L27/361H04L27/362
    • A communications transmitter includes a combination modulator and a baseband processor configured to generate amplitude, angle, in-phase and quadrature signals. The combination modulator is configured to modulate in the quadrature domain or the polar domain, depending on an output power level of the transmitter and/or the type of modulation scheme being used. When configured to modulate in the quadrature domain, the baseband processor is configured to generate time-varying in-phase and quadrature modulating signals and time-invariant amplitude and angle signals for the combination modulator. When configured to modulate in the polar domain, the baseband processor is configured to generate time-varying amplitude and angle modulating signals and time-invariant in-phase and quadrature signals for the combination modulator. In another embodiment of the invention, the communications transmitter is configurable to operate in three different operational modes: linear, envelope tracking and switch modes. Which operational mode the communications transmitter is configured to transmit depends on the type of modulation scheme being used and/or the transmitter output power level.
    • 通信发射机包括组合调制器和被配置为产生幅度,角度,同相和正交信号的基带处理器。 组合调制器被配置为根据发射机的输出功率电平和/或正在使用的调制方案的类型在正交域或极坐标域中进行调制。 当配置为在正交域中调制时,基带处理器被配置为为组合调制器生成时变同相和正交调制信号以及时不变的幅度和角度信号。 当配置为在极域中调制时,基带处理器被配置为产生用于组合调制器的时变幅度和角度调制信号以及时间不变的同相和正交信号。 在本发明的另一实施例中,通信发射机可配置为以三种不同的操作模式操作:线性,包络跟踪和切换模式。 通信发射机被配置为发送的哪个操作模式取决于所使用的调制方案的类型和/或发射机的输出功率电平。
    • 9. 发明申请
    • Power Conversion and Control Systems and Methods for Solid-State Lighting
    • 固态照明的电力转换与控制系统与方法
    • US20130234613A1
    • 2013-09-12
    • US13859869
    • 2013-04-10
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H05B33/08
    • H05B33/0815H05B37/02
    • A power conversion and control system suitable for use with solid-state lighting and conventional TRIAC dimmer switching includes an alternating current to direct current (AC-DC) converter configured to convert AC power from the AC mains to DC power and a controller configured to control dimming of a light-emitting load depending on the magnitude of a distorted AC voltage from an external TRIAC dimmer switch relative to the magnitude of the DC voltage Vdc produced by the AC-DC converter. To prevent the TRIAC in the external TRIAC dimmer switch from turning off in situations where the AC-DC converter is disconnected from the AC mains or not drawing any current from the AC mains, the power conversion and control system may further include circuitry that maintains the current through the TRIAC above its minimum holding current.
    • 适用于固态照明和常规TRIAC调光器切换的电力转换和控制系统包括交流电流至直流(AC-DC)转换器,其被配置为将来自AC电源的AC电力转换为DC电力,并且控制器被配置为控制 取决于来自外部TRIAC调光器开关的失真的交流电压的大小相对于由AC-DC转换器产生的DC电压Vdc的大小来调光发光负载。 为了防止在AC-DC转换器与交流电源断开或未从交流电源断开任何电流的情况下外部TRIAC调光开关中的TRIAC关闭,电源转换和控制系统还可以包括电路, 通过TRIAC的电流超过其最小保持电流。
    • 10. 发明申请
    • Duty Cycle Translator Methods and Apparatus
    • 占空比翻译器的方法和装置
    • US20130113642A1
    • 2013-05-09
    • US13733123
    • 2013-01-02
    • Earl W. McCune, JR.
    • Earl W. McCune, JR.
    • H02M5/02H03F3/16H03M3/00
    • H02M5/02H03F3/16H03K7/06H03K7/08H03M3/50
    • Methods and apparatus for translating duty cycle information in duty-cycle-modulated signals to higher frequencies or higher data rates. An exemplary duty cycle translator includes a duty cycle evaluator, a high-speed digital counter, and a comparator. The duty cycle evaluator generates a first digital number representing a duty cycle of a low-frequency input duty-cycle-modulated (DCM) signal. The comparator compares the first digital number to a second digital number generated by the high-speed digital counter, and generates, based on the comparison, an output DCM signal having a higher frequency or data rate than the frequency or data rate of the low-frequency input DCM signal but a duty cycle that is substantially the same as the duty cycle of the low-frequency input DCM signal.
    • 将占空比调制信号中的占空比信息转换为更高频率或更高数据速率的方法和装置。 示例性占空比转换器包括占空比评估器,高速数字计数器和比较器。 占空比评估器产生表示低频输入占空比调制(DCM)信号的占空比的第一数字数字。 比较器将第一数字编号与由高速数字计数器产生的第二数字编号进行比较,并且基于比较产生具有比低速数字计数器的频率或数据速率更高的频率或数据速率的输出DCM信号, 频率输入DCM信号,但占空比基本上与低频输入DCM信号的占空比相同。