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公开(公告)号：US20130342279A1
公开(公告)日：2013-12-26
申请号：US13529934
申请日：2012-06-21
申请人： Berardi Sensale-Rodriguez , Rusen Yan , Huili (Grace) Xing , Michelle M. Kelly , Tian Fang , Debdeep Jena , Lei Liu
发明人： Berardi Sensale-Rodriguez , Rusen Yan , Huili (Grace) Xing , Michelle M. Kelly , Tian Fang , Debdeep Jena , Lei Liu
IPC分类号： H03C1/02
摘要： A wave amplitude modulator for modulating a transmitted electromagnetic wave includes one or multiple self-gated capacitively coupled pair(s) of electron layers such as semiconductor or semimetal layers. Two electrical contacts are placed to each layer of electrons of the self-gated pair(s), and a power source is electrically connected to them. The power source, by varying the voltage applied between layers of electrons, tunes the electron density thereof, thereby adjusting the optical conductivity thereof, and the change in the optical conductivity of the layers of electrons causes an amplitude modulation of the transmitted electromagnetic wave passing through the capacitively coupled layers of electrons.
摘要翻译： 用于调制发射的电磁波的波幅调制器包括一个或多个自门电容耦合的电子层对，例如半导体层或半金属层。 两个电触头被放置到自门控对的每个电子层，并且电源与它们电连接。 电源通过改变施加在电子层之间的电压调谐其电子密度，从而调节其光导率，并且电子层的光导率的变化引起通过的透射电磁波的幅度调制 电容耦合的电子层。
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2.发明申请Systems and Methods for Providing Modulation of Switchmode RF Power Amplifiers 有权提供开关模式RF功率放大器调制的系统和方法公开(公告)号：US20120139706A1
公开(公告)日：2012-06-07
申请号：US12961089
申请日：2010-12-06
CPC分类号： H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
摘要： Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
摘要翻译： 系统和方法被提供用于产生到开关模式功率放大器的幅度调制信号。 直流 - 直流开关配置为接收直流输入电压并提供直流输出电压。 低压差稳压器被配置为根据由低压差调节器接收的调制控制信号来提供幅度调制信号。 控制电路被配置为通过幅度调制信号建立功率放大器的额定工作功率电平，并且保持DC输出电压和低压差稳压器输出之间的最小电压差。 调制器控制电路被配置为向低压差调节器提供调制控制信号。 调制器控制电路分别提供从高幅度到低幅度的转变以及在可配置的第一和第二斜率处从低幅度到高幅度的转变。
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3.发明申请METHOD FOR MODULATING A CARRIER SIGNAL AND METHOD FOR DEMODULATING A MODULATED CARRIER SIGNAL 审中-公开用于调制载波信号的方法和用于解调调制载波信号的方法公开(公告)号：US20090310689A1
公开(公告)日：2009-12-17
申请号：US12547453
申请日：2009-08-25
申请人： Klaus HUBER
发明人： Klaus HUBER
IPC分类号： H04L27/00
摘要： A method for modulating a carrier signal used for transmitting analog or digital message signals is provided. The module k of elliptic functions is used as a modulation parameter instead of the amplitude or the frequency. The carrier signal modulated according to this modulation method is provided with a constant amplitude and a fixed frequency while the signal form is chronologically modified at the rhythm of the message that is to be transmitted.
摘要翻译： 提供了用于调制用于发送模拟或数字消息信号的载波信号的方法。 椭圆函数的模块k用作调制参数，而不是幅度或频率。 根据该调制方式调制的载波信号被提供有恒定幅度和固定频率，同时信号形式按照要发送的消息的节奏按时间顺序修改。
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公开(公告)号：US20080055139A1
公开(公告)日：2008-03-06
申请号：US11847761
申请日：2007-08-30
申请人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
发明人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
IPC分类号： H03M1/66
CPC分类号： H03C3/02 , H03C1/02 , H03K7/04 , H03K2005/00247 , H04B1/71635
摘要： Provided is a digital modulation circuit constructed with only a digital circuit. The digital modulation circuit includes: a clock generator which generates a reference clock pulse having a predetermined period; an up/down counter which generates a count value having predetermined bits by up-counting or down-counting the reference clock pulse and outputs a bit in the count value as a transmission signal; a controller which determines a counting start/end time point of the up/down counter and determine which one of the up-counting operation and the down-counting operation of the up/down counter is to be performed, according to a value of digital transmission data that is to be transmitted; and a band-pass filter which converts a waveform of the transmission signal output from the up/down counter into a sine waveform.
摘要翻译： 提供了仅由数字电路构成的数字调制电路。 数字调制电路包括：时钟发生器，其产生具有预定周期的参考时钟脉冲; 向上/向下计数器，其通过对参考时钟脉冲进行向上计数或递减计数来产生具有预定位的计数值，并将计数值中的位作为发送信号输出; 确定上/下计数器的计数开始/结束时间点的控制器，并根据数字的数值确定要执行向上/向下计数器的向上计数操作和向下计数操作中的哪一个 要发送的发送数据; 以及将从上/下计数器输出的发送信号的波形转换为正弦波形的带通滤波器。
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公开(公告)号：US5847623A
公开(公告)日：1998-12-08
申请号：US925572
申请日：1997-09-08
CPC分类号： H03C1/545 , H03C3/40 , H03C1/02 , H03C2200/0012 , H03C2200/002 , H03C2200/0025 , H03C2200/0058
摘要： A Gilbert Multiplier Cell includes an emitter-coupled transistor pair and a pair of cross-coupled emitter-coupled transistor pairs. A filter couples the emitter-coupled transistor pair to the pair of the cross-coupled emitter-coupled transistor pairs. The filter may include a pair of inductors or resistors, a respective one of which serially couples a respective one of the emitter-coupled transistor pair to a respective one of the pair of cross-coupled emitter-coupled transistor pairs, and a capacitor connected between the pair of inductors or resistors. A local oscillator is coupled to the pair of cross-coupled emitter-coupled transistor pairs and a data input is coupled to the emitter-coupled transistor pair. By low pass filtering the output of the emitter-coupled transistor pair that is applied to the pair of cross-coupled emitter-coupled transistor pairs, low noise floor Gilbert Multiplier Cells and quadraphase modulators may be provided.
摘要翻译： 吉尔伯特乘法器单元包括发射极耦合晶体管对和一对交叉耦合发射极耦合晶体管对。 一个滤波器将发射极耦合晶体管对耦合到一对交叉耦合的发射极耦合晶体管对。 滤波器可以包括一对电感器或电阻器，其中相应的一个电感器或电阻器将发射极耦合晶体管对中的相应一个串联耦合到该对交叉耦合发射极耦合晶体管对中的相应一个，以及连接在 一对电感器或电阻器。 本地振荡器耦合到一对交叉耦合发射极耦合晶体管对，并且数据输入耦合到发射极耦合晶体管对。 通过对施加到一对交叉耦合发射极耦合晶体管对的发射极耦合晶体管对的输出进行低通滤波，可以提供低噪声基底吉尔伯特乘法器单元和四图形调制器。
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公开(公告)号：US5694093A
公开(公告)日：1997-12-02
申请号：US550546
申请日：1995-11-07
IPC分类号： H03H7/20 , H03C1/02 , H03C1/52 , H03C1/60 , H03C3/00 , H03C3/40 , H03C5/00 , H03D1/22 , H03D3/00 , H03H7/21 , H03H11/16 , H03H11/18 , H03H11/22 , H04L27/20 , H04L27/36
CPC分类号： H03C5/00 , H03C1/52 , H03C3/00 , H03C3/40 , H03H11/16 , H03H11/18 , H03H11/22 , H03C1/02 , H03C1/60 , H03C2200/0016 , H03C2200/0058 , H03D1/2245 , H03D3/007
摘要： An IQ modulator incorporates a quadrature network that is responsive to a frequency dependent control signal and that has in-phase and quadrature signals that are of equal amplitude and in exact quadrature over a wide range of applied frequencies. The quadrature network includes RC and CR phase shifters whose C's are fixed capacitors of equal value and whose R's are made equal to each other and to the capacitive reactance of the C's by the action of the frequency dependent control signal. The R's may be FET's. The frequency dependent control signal may be generated without express knowledge of the applied frequency by a servo loop that nulls out the amplitude difference between the in-phase and quadrature outputs from the quadrature network; it may also be generated from a look-up table as an express function of frequency. The frequency dependent control signal is split into separate instances that are applied to each R, and an offset may be introduced therebetween to provide extreme precision. The offset may be fixed or programmatically controlled as a function of frequency. Varactors may be used to provide variable C's in cooperation with fixed R's. The entire circuit may be fabricated as a GaAs IC for use in the frequency range of 200 MHz to 3GHz.
摘要翻译： IQ调制器包括正交网络，该正交网络响应于频率相关的控制信号，并且具有同相和正交信号，它们在宽的施加频率范围内具有相等幅度和准确的正交。 正交网络包括RC和CR相移器，其C是相等值的固定电容器，并且R通过频率相关控制信号的作用使得R相互相等并且与C的容性电抗相对应。 R的可能是FET的。 频率相关控制信号可以在没有通过伺服环路的应用频率的明确知识的情况下产生，从而消除来自正交网络的同相和正交输出之间的幅度差异; 它也可以从查找表生成为频率的表达功能。 频率相关控制信号被分割成分别应用于每个R的实例，并且可以在其间引入偏移以提供极高的精度。 偏移可以是固定的或者作为频率的函数被编程地控制。 Varactors可以用于与固定R协作提供变量C。 整个电路可以制造为在200MHz至3GHz的频率范围内使用的GaAs IC。
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公开(公告)号：US4747161A
公开(公告)日：1988-05-24
申请号：US832807
申请日：1986-02-25
申请人： Gilmer L. Hulsey , Bryan A. Weaver
发明人： Gilmer L. Hulsey , Bryan A. Weaver
CPC分类号： H03C1/02 , H03F1/30 , H04B1/0475 , H04B1/1607 , H04B1/04
摘要： An AM-RF transmitter includes a transmitter stage having a DC power supply terminal energized by an AC to DC converter including reactances having a resonant frequency approaching frequencies of an information, modulating signal. The voltage applied by the supply to the DC power supply terminal is reduced to such an extent as to induce distortion in the transmitted AM-RF carrier in response to the transmitter stage being modulated by positive amplitude variations having frequencies that approach the resonant frequency. The amplitude of the transmitter stage modulation is increased when the distortion would otherwise occur to substantially prevent the distortion. The information signal is modified in amplitude by only AC coupling a replica of the DC power supply voltage variations to one input of a four quadrant multiplier, having a second input responsive to the information signal.
摘要翻译： AM-RF发射机包括具有由AC到DC转换器激励的直流电源端子的发射机级，其包括具有接近信息频率的调制信号的谐振频率的电抗。 电源施加到直流电源端子的电压减小到这样一个程度，以便响应于发射机级被具有接近谐振频率的频率的正幅度变化来调制而在发射的AM-RF载波中引起失真。 发生器级调制的幅度会增加，否则将发生失真以基本上防止失真。 通过仅将DC电源电压变化的副本交流耦合到四象限乘法器的一个输入端，响应于信息信号具有第二输入，信号信号被修改。
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公开(公告)号：US4247948A
公开(公告)日：1981-01-27
申请号：US968797
申请日：1978-12-12
申请人： Hisao Okada , Yukihiro Kawamoto
发明人： Hisao Okada , Yukihiro Kawamoto
CPC分类号： H03C1/02 , G01R29/06 , H04B2001/0491
摘要： An automatic modulation control in a transmitter, comprising an alternating modulation signal source, a modulation signal amplifier, a carrier generator, a modulator for modulating the carrier signal as a function of the output of the modulation signal amplifier, a threshold detector coupled in a direct current manner to the output of the modulation signal amplifier for threshold detecting the modulation signal output, a smoothing circuit for smoothing the threshold detected output, an amplifier for the threshold detected and smoothed output, and a control circuit for controlling the input of the modulation signal to the modulation signal amplifier as a function of the output of the threshold detected output amplifier.
摘要翻译： 发射机中的自动调制控制，包括交替调制信号源，调制信号放大器，载波发生器，用于调制作为调制信号放大器的输出的函数的载波信号的调制器，直接耦合的阈值检测器 用于阈值检测调制信号输出的调制信号放大器的输出的当前方式，用于平滑阈值检测输出的平滑电路，用于阈值检测和平滑输出的放大器，以及用于控制调制信号的输入的控制电路 作为阈值检测输出放大器的输出的函数的调制信号放大器。
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公开(公告)号：US09614478B2
公开(公告)日：2017-04-04
申请号：US15210131
申请日：2016-07-14
申请人： Stryker Combo L.L.C.
CPC分类号： H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
摘要： Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
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10.发明申请Systems and Methods for Providing Modulation of Switchmode RF Power Amplifiers 审中-公开提供开关模式RF功率放大器调制的系统和方法公开(公告)号：US20150280649A1
公开(公告)日：2015-10-01
申请号：US14692293
申请日：2015-04-21
申请人： Stryker Combo L.L.C.
CPC分类号： H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
摘要： Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
摘要翻译： 系统和方法被提供用于产生到开关模式功率放大器的幅度调制信号。 直流 - 直流开关配置为接收直流输入电压并提供直流输出电压。 低压差稳压器被配置为根据由低压差调节器接收的调制控制信号来提供幅度调制信号。 控制电路被配置为通过幅度调制信号建立功率放大器的额定工作功率电平，并且保持DC输出电压和低压差稳压器输出之间的最小电压差。 调制器控制电路被配置为向低压差调节器提供调制控制信号。 调制器控制电路分别提供从高幅度到低幅度的转变以及在可配置的第一和第二斜率处从低幅度到高幅度的转变。
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