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51.发明授权Self-excited power minimizer/maximizer for switching power converters and switching motor drive applications 失效用于开关电源转换器和开关电机驱动应用的自激式功率最小化器/最大值
公开(公告)号：US5801519A
公开(公告)日：1998-09-01
申请号：US668124
申请日：1996-06-21
CPC分类号： G05F1/67 , H02M3/156 , H02M2001/0022 , Y02E10/58 , Y10S323/906
摘要： In any steady-state optimization problem, the output being optimized could be a nonmonotonic function of the controlled variable. Often the output is dependent on the temperature, the load impedance, and other unknown and variable quantities. Thus, it is very useful to have an automatic tuning scheme that will take the system to the desired operating point using only input and output information. The present invention is a generalized tuning scheme that uses the correlation between changes in the input and corresponding changes in the output to tune the operating point. In general terms, the present invention utilizes a correlation function between the controlled variable and a perturbed waveform. When the system reaches the desired operating point, the correlation goes to zero and the system converges. This corresponds to the point at which the derivative of the output with respect to the input is zero. This tuning scheme is appropriate for any tuning problem which has a single maximum or minimum. A variety of tuning problems in power electronics and other areas fall into this category. A tuning scheme based on correlation usually requires an excitation input. The switching action in the controlled circuit perturbs all the states and provides this excitation. Thus, this tuning scheme is appropriate for switching power applications. A preferred embodiment of the present application is used to control a power converter in a solar array application.
摘要翻译： 在任何稳态优化问题中，被优化的输出可以是受控变量的非单调函数。 通常输出取决于温度，负载阻抗和其他未知和可变量。 因此，使用仅使用输入和输出信息将系统带到期望的操作点的自动调谐方案是非常有用的。 本发明是一种通用调谐方案，其使用输入中的变化与输出的相应变化之间的相关性来调整工作点。 一般来说，本发明利用受控变量和扰动波形之间的相关函数。 当系统达到所需的工作点时，相关性将变为零，系统收敛。 这对应于输出相对于输入的导数为零的点。 该调谐方案适用于具有单个最大值或最小值的任何调谐问题。 电力电子等领域的各种调谐问题属于这一类。 基于相关性的调谐方案通常需要激励输入。 受控电路中的开关动作会干扰所有状态并提供这种激励。 因此，该调谐方案适用于开关电源应用。 本申请的优选实施例用于控制太阳能阵列应用中的功率转换器。
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公开(公告)号：US20180076376A1
公开(公告)日：2018-03-15
申请号：US15705164
申请日：2017-09-14
CPC分类号： H01L35/32 , H01L35/02 , H01L35/22 , H01Q1/22 , H01Q1/38 , H01Q1/48 , H01Q5/328 , H01Q9/28 , H01Q15/0086
摘要： A metamaterial coupled antenna includes a metamaterial and a rectenna that has an antenna element and a diode coupled by a transmission line. The metamaterial generates a spoof surface plasmon in the presence of heat. The antenna element resonates in the presence of the spoof surface plasmon as terahertz frequencies and generates a voltage that is coupled to the diode via the transmission line. The diode rectifies the voltage to produce electricity. The transmission line is configured to provide a voltage boost to the voltage signal delivered by the antenna element and to compensation for diode capacitance.
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公开(公告)号：US09106214B1
公开(公告)日：2015-08-11
申请号：US13936128
申请日：2013-07-05
申请人： Pallab Midya
发明人： Pallab Midya
CPC分类号： H03K7/08 , H02M7/527 , H02M7/5395 , H03F3/2173 , H03K3/017 , H04L25/4902
摘要： A PCM signal is converted to a PWM signal using predistortion to alleviate harmonics. A PCM predistorted signal is converted to the PWM and amplified. A third harmonic nonlinear function receives the PCM signal and produces a third harmonic of the PCM signal. A third harmonic difference function takes one sixth of the third harmonic and produces a third harmonic PCM compensation signal. The PCM signal and the third harmonic PCM compensation signal are summed to produce a PCM predistorted signal for a full-bridge amplifier. A second harmonic nonlinear function produces a second harmonic of the PCM signal. A second harmonic function takes one fourth of the second harmonic to produce a second harmonic PCM compensation signal. The PCM signal, the third harmonic PCM compensation signal, and the second harmonic PCM compensation signal are summed to produce the PCM predistorted signal for a half-bridge amplifier.
摘要翻译： 使用预失真将PCM信号转换为PWM信号以减轻谐波。 PCM预失真信号被转换为PWM并放大。 三次谐波非线性函数接收PCM信号并产生PCM信号的三次谐波。 三次谐波差分函数占三次谐波的六分之一，产生三次谐波PCM补偿信号。 将PCM信号和三次谐波PCM补偿信号相加以产生用于全桥放大器的PCM预失真信号。 二次谐波非线性函数产生PCM信号的二次谐波。 二次谐波函数占二次谐波的四分之一以产生二次谐波PCM补偿信号。 将PCM信号，三次谐波PCM补偿信号和二次谐波PCM补偿信号相加以产生用于半桥放大器的PCM预失真信号。
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公开(公告)号：US09054937B2
公开(公告)日：2015-06-09
申请号：US13309862
申请日：2011-12-02
CPC分类号： H04L27/3809 , H03F1/025 , H03F3/24 , H03F2200/102 , H03F2200/435
摘要： A system according to one embodiment includes a digital data modulator configured to generate encoded symbols; an envelope detector configured to receive the encoded symbols and to estimate transmission power information associated with the encoded symbols; a peak detector configured to receive the transmission power information, detect a peak transmission power from two or more sequential data points of the received transmission power information, and to generate a power regulation signal representative of the detected peak transmission power; and a digital to analog converter (DAC) configured to receive the power regulation signal and to provide a reference voltage to a power supply associated with an RF amplifier.
摘要翻译： 根据一个实施例的系统包括被配置为生成编码符号的数字数据调制器; 包络检测器，被配置为接收编码符号并且估计与编码符号相关联的传输功率信息; 峰值检测器，被配置为接收发送功率信息，从所接收的发送功率信息的两个或更多个顺序数据点检测峰值发送功率，并产生表示检测到的峰值发送功率的功率调节信号; 以及被配置为接收功率调节信号并且向与RF放大器相关联的电源提供参考电压的数模转换器（DAC）。
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公开(公告)号：US08638836B2
公开(公告)日：2014-01-28
申请号：US12551495
申请日：2009-08-31
IPC分类号： H04B1/38
CPC分类号： H04B1/525
摘要： A transceiver mitigates signal leakage into a receive path from a transmit path. A subtraction circuit determines a difference between a receive signal and a compensation signal to produce a compensated receive signal prior to demodulation by a demodulator. An equalizer both amplitude adjusts and phase adjusts orthogonal baseband transmit signals based on the difference from the subtraction circuit to produce the compensation signal. A digital tuning circuit determines at least one amplitude adjust coefficient to be used by the equalizer. The equalizer can have a polarity switch or a variable attenuator or a variable delay.
摘要翻译： 收发信机从发送路径减轻信号泄漏到接收路径。 减法电路确定接收信号和补偿信号之间的差异，以在由解调器解调之前产生经补偿的接收信号。 均衡器两者都基于与减法电路的差异来调整和相位调整正交基带发射信号，产生补偿信号。 数字调谐电路确定要由均衡器使用的至少一个幅度调整系数。 均衡器可以具有极性开关或可变衰减器或可变延迟。
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56.发明申请公开(公告)号：US20110012575A1
公开(公告)日：2011-01-20
申请号：US12503807
申请日：2009-07-15
IPC分类号： G05F1/10
摘要： A switching power converter converts an input DC voltage to an output DC voltage using a switch to selectively connect an input DC voltage energy source. A switching controller controls the switch. A pulse width modulation centering signal is generated by a spread spectrum clock signal generator. An error amplifier of the switching controller generates an analog error signal based on a switching voltage measured after the switching of the switching power converter, the output voltage of the switching power converter, the pulse width modulation centering signal and a reference. A pulse width modulated signal generator generates the pulse width modulation signal to control the switch of the switching power converter based on the pulse width modulation centering signal and the analog error signal.
摘要翻译： 开关电源转换器使用开关将输入DC电压转换为输出DC电压，以选择性地连接输入DC电压能量源。 开关控制器控制开关。 脉宽调制定心信号由扩频时钟信号发生器产生。 开关控制器的误差放大器基于开关电源转换器切换后的开关电压，开关功率转换器的输出电压，脉冲宽度调制对中信号和基准值，生成模拟误差信号。 脉冲宽度调制信号发生器产生脉冲宽度调制信号，以根据脉宽调制定心信号和模拟误差信号来控制开关功率转换器的开关。
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公开(公告)号：US07777563B2
公开(公告)日：2010-08-17
申请号：US12338279
申请日：2008-12-18
申请人： Pallab Midya , William J. Roeckner
发明人： Pallab Midya , William J. Roeckner
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： A circuit includes a variable frequency generator circuit and a quantization circuit. The variable frequency generator circuit provides a discontinuous switching frequency signal. The variable frequency generator circuit varies the discontinuous switching frequency signal between a first and second frequency while avoiding at least one frequency band between the first and second frequency. The quantization circuit provides a plurality discrete switching signals each separated by a second frequency band that vary in accordance with the discontinuous switching frequency signal, wherein the avoided frequency band of the discontinuous switching frequency signal is greater than the second frequency band.
摘要翻译： 电路包括可变频率发生器电路和量化电路。 可变频率发生器电路提供不连续的开关频率信号。 可变频率发生器电路在第一和第二频率之间改变不连续的开关频率信号，同时避免第一和第二频率之间的至少一个频带。 量化电路提供多个离散切换信号，每个离散切换信号由根据不连续切换频率信号而变化的第二频带分开，其中不连续切换频率信号的避免频带大于第二频带。
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公开(公告)号：US20100156527A1
公开(公告)日：2010-06-24
申请号：US12338279
申请日：2008-12-18
申请人： Pallab Midya , William J. Roeckner
发明人： Pallab Midya , William J. Roeckner
CPC分类号： H03F3/217
摘要： A circuit includes a variable frequency generator circuit and a quantization circuit. The variable frequency generator circuit provides a discontinuous switching frequency signal. The variable frequency generator circuit varies the discontinuous switching frequency signal between a first and second frequency while avoiding at least one frequency band between the first and second frequency. The quantization circuit provides a plurality discrete switching signals each separated by a second frequency band that vary in accordance with the discontinuous switching frequency signal, wherein the avoided frequency band of the discontinuous switching frequency signal is greater than the second frequency band.
摘要翻译： 电路包括可变频率发生器电路和量化电路。 可变频率发生器电路提供不连续的开关频率信号。 可变频率发生器电路在第一和第二频率之间改变不连续的开关频率信号，同时避免第一和第二频率之间的至少一个频带。 量化电路提供多个离散切换信号，每个离散切换信号由根据不连续切换频率信号而变化的第二频带分开，其中不连续切换频率信号的避免频带大于第二频带。
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公开(公告)号：US20070002943A1
公开(公告)日：2007-01-04
申请号：US11156396
申请日：2005-06-20
申请人： Pallab Midya
发明人： Pallab Midya
IPC分类号： H03K7/08
CPC分类号： H04L25/4902 , H03F3/189 , H03F3/217 , H04L25/4921
摘要： A digital amplifier and method are provided to convert digital base-band signals to a pair of digital switching waveforms switching at a carrier frequency to create a modulated RF signal. The digital amplifier contains variable frequency suppressed carrier PWM generators that produce in-phase and quadrature-phase differential signals, a mixer that combines the differential signals, a decoder that decodes the combined signals, and a power stage that receives signals from the decoder and provides an amplified signal at the carrier frequency using switches. The mixer combines the differential signals such that only one of the differential signals is output in a period. The carrier generators have integral noise shaping and use a random period signal to re-distribute quantization noise to a band outside an RF band of interest and reduce EMI of the RF signal.
摘要翻译： 提供了一种数字放大器和方法，用于将数字基带信号转换成以载波频率切换的一对数字切换波形，以产生调制的RF信号。 数字放大器包含产生同相和正交相位差分信号的可变频率抑制载波PWM发生器，组合差分信号的混频器，解码组合信号的解码器和从解码器接收信号的功率级， 使用开关在载波频率处的放大信号。 混频器组合差分信号，使得在一个周期内只输出一个差分信号。 载波发生器具有积分的噪声整形，并且使用随机周期信号将量化噪声重新分配到感兴趣的RF频带外的频带，并降低RF信号的EMI。
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公开(公告)号：US06995482B2
公开(公告)日：2006-02-07
申请号：US10828090
申请日：2004-04-20
IPC分类号： H02B1/24
CPC分类号： H02M1/32 , H02M7/538 , H02M7/5387 , Y10T307/74 , Y10T307/76 , Y10T307/911 , Y10T307/918
摘要： A method for providing a current path during switching transitions of a switching circuit while limiting the short circuit current. In one embodiment, a switching circuit includes a passive break-before-make element in series with two switches. An alternate embodiment includes a make-before-break element in parallel with the switches. The passive break-before-make element, or make-before-break element, provides a high impedance in a short term and a low impedance in a long term. The switching circuit may be coupled to a load through a low pass filter. In one embodiment, the switching circuit is used in a switching audio amplifier circuit, where correction of nonlinearities incorporates analog feedback to modify the duty ratio of a digitally generated switching signal in the analog domain.
摘要翻译： 一种用于在切换电路切换转换期间提供电流路径同时限制短路电流的方法。 在一个实施例中，开关电路包括与两个开关串联的被动断开元件。 替代实施例包括与开关并联的断开元件。 被动断开元件或断开元件在短期内提供高阻抗，并在长期内提供低阻抗。 开关电路可以通过低通滤波器耦合到负载。 在一个实施例中，切换电路用于开关音频放大器电路中，其中非线性校正包括模拟反馈以修改模拟域中的数字产生的开关信号的占空比。
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