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公开(公告)号：US20180102850A1
公开(公告)日：2018-04-12
申请号：US15839380
申请日：2017-12-12
申请人： INPHI CORPORATION
发明人： Oscar Ernesto AGAZZI , Diego Ernesto CRIVELLI , Hugo Santiago CARRER , Mario Rafael HUEDA , German Cesar Augusto LUNA , Carl GRACE
CPC分类号： H04B10/5059 , H03M13/41 , H04B1/38 , H04B3/235 , H04B7/005 , H04B7/0456 , H04B10/25073 , H04B10/2941 , H04B10/40 , H04B10/6971 , H04B2001/0441 , H04B2201/709772 , H04L5/16 , H04L25/0202 , H04L25/025 , H04L25/03038 , H04L25/03057 , H04L2025/03477 , H04L2025/03617
摘要： A receiver (e.g., for a 10 G fiber communications link) includes an interleaved ADC coupled to a multi-channel equalizer that can provide different equalization for different ADC channels within the interleaved ADC. That is, the multi-channel equalizer can compensate for channel-dependent impairments. In one approach, the multi-channel equalizer is a feedforward equalizer (FFE) coupled to a Viterbi decorder, for example, a sliding block Viterbi decoder (SBVD); and the FFE and/or the channel estimator for the Viterbi decoder are adapted using the LMS algorithm.
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公开(公告)号：US09628120B2
公开(公告)日：2017-04-18
申请号：US14961295
申请日：2015-12-07
发明人： Qian Yu , Yan Wang , Rajeev Krishnamoorthy
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/3241 , H03F3/24 , H04B2001/0425 , H04B2001/0441 , H04B2001/045
摘要： A system includes a crest-factor reduction circuit, a signal analyzer, and a pre-distortion circuit. The crest-factor reduction circuit reduces a crest factor of a baseband signal and generates a feedforward signal. The signal analyzer generates parameters based on the feedforward signal and an output signal from a power amplifier. The pre-distortion circuit generates a pre-distorted baseband signal based on the parameters for input to the power amplifier.
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公开(公告)号：US20170063425A1
公开(公告)日：2017-03-02
申请号：US15250094
申请日：2016-08-29
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Marcus Granger-Jones
CPC分类号： H04B1/0475 , H01P5/18 , H04B2001/0441
摘要： RF coupling circuitry includes a first coupled signal output node, a second coupled signal output node, an RF coupler, RF filtering circuitry, and attenuator circuitry. The RF coupler is configured to couple RF signals from an RF transmission line to provide coupled RF signals. The RF filtering circuitry is coupled to the RF coupler and configured to separate RF signals within a first RF frequency band in the coupled RF signals from RF signals within a second RF frequency band in the coupled RF signals. The attenuator circuitry is coupled between the RF filtering circuitry, the first coupled signal output node, and the second coupled signal output node. The attenuator circuitry is configured to attenuate the RF signals within the first RF frequency band and the RF signals within the second RF frequency band.
摘要翻译： RF耦合电路包括第一耦合信号输出节点，第二耦合信号输出节点，RF耦合器，RF滤波电路和衰减器电路。 RF耦合器被配置为耦合来自RF传输线的RF信号以提供耦合的RF信号。 RF滤波电路耦合到RF耦合器并且被配置为在耦合的RF信号中的耦合的RF信号中的RF信号中的RF信号中的RF信号中的RF信号从耦合RF信号中的第二RF频带内的RF信号分离。 衰减器电路耦合在RF滤波电路，第一耦合信号输出节点和第二耦合信号输出节点之间。 衰减器电路被配置为衰减第一RF频带内的RF信号和第二RF频带内的RF信号。
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4.发明申请METHOD AND APPARATUS FOR SUPPLYING POWER TO A RADIO FREQUENCY POWER AMPLIFIER 有权用于向无线电频率功率放大器供电的方法和装置公开(公告)号：US20160065139A1
公开(公告)日：2016-03-03
申请号：US14843512
申请日：2015-09-02
发明人： Sung-Jun LEE , Ji-Seon Paek , Seung-Chul Lee , Yong-Sik Youn , Jun-Hee Jung , Thomas Byunghak Cho , Sang-Wook Han
CPC分类号： H03F1/0227 , H03F1/0222 , H03F1/3223 , H03F3/19 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/72 , H03F2200/102 , H03F2200/375 , H03F2200/411 , H03F2200/432 , H03F2200/451 , H03F2200/78 , H03F2203/7227 , H03G3/3042 , H04B1/0475 , H04B2001/0441
摘要： A method and a supply modulator (SM) are provided for supplying power from a wireless transmitter to a radio frequency (RF) power amplifier. A power control signal input from a modem is received. A reference voltage is determined. An operating mode of the SM is changed by controlling a level of the reference voltage. A voltage is determined based on the level of a reference voltage. When the operating mode of the SM is an ET mode, a first output signal from a linear regulator and a second output signal from a switching regulator are combined to obtain a combined result, and the combined result is output. The first output signal is based on the voltage. When the operating mode of the SM is an APT mode, the voltage based on the reference voltage is output.
摘要翻译： 提供了一种用于从无线发射机向射频（RF）功率放大器供电的方法和电源调制器（SM）。 从调制解调器输入的功率控制信号被接收。 确定参考电压。 通过控制参考电压的电平来改变SM的工作模式。 基于参考电压的电平来确定电压。 当SM的工作模式是ET模式时，来自线性调节器的第一输出信号和来自开关调节器的第二输出信号被组合以获得组合结果，并且输出组合结果。 第一个输出信号基于电压。 当SM的工作模式为APT模式时，输出基于参考电压的电压。
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公开(公告)号：US20160036472A1
公开(公告)日：2016-02-04
申请号：US14668579
申请日：2015-03-25
发明人： YU-PING CHANG
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H03F3/24 , H04B2001/0408 , H04B2001/0425 , H04B2001/0433 , H04B2001/0441
摘要： The present invention discloses a digital pre-distortion circuit capable of compensating an analog circuit for its non-linear characteristic. An embodiment of said digital pre-distortion circuit comprises: a pre-distortion training circuit and a pre-distortion circuit. Said pre-distortion training circuit is operable to process a digital feedback signal according to a Cholesky Decomposition related algorithm and thereby generate a plurality of coefficients in which the digital feedback signal is derived from an output signal of the analog circuit and the output signal of the analog circuit is derived from an original digital signal; and said pre-distortion circuit is operable to process the original digital signal according to the plurality of coefficients under a compensation mode and thereby generate a digital pre-distortion signal whose non-linear characteristic is able to compensate the non-linear characteristic of the analog circuit.
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公开(公告)号：US09207692B2
公开(公告)日：2015-12-08
申请号：US14056292
申请日：2013-10-17
CPC分类号： G05F1/46 , H03F1/0211 , H03F1/0227 , H03F1/3223 , H03F3/189 , H03F3/24 , H03F2200/102 , H03F2200/432 , H04B2001/0441
摘要： An envelope tracking power supply and an offset capacitive element are disclosed. The offset capacitive element is coupled between a switching output and an analog output of the envelope tracking power supply, which operates in one of an envelope tracking mode, a transition mode, and an average power tracking mode. During the envelope tracking mode, the envelope tracking power supply provides an envelope power supply signal using both the switching output and the analog output. During the transition mode, the envelope tracking power supply drives a voltage across the offset capacitive element from a first voltage to a second voltage, such that during a transition from the envelope tracking mode to the transition mode, the offset capacitive element has the first voltage, and during a transition from the transition mode to the average power tracking mode, the offset capacitive element has the second voltage.
摘要翻译： 公开了一种包络跟踪电源和偏移电容元件。 偏移电容元件耦合在包络跟踪电源的开关输出和模拟输出之间，其以包络跟踪模式，转换模式和平均功率跟踪模式之一工作。 在包络跟踪模式期间，包络跟踪电源使用开关输出和模拟输出两者提供包络电源信号。 在转换模式期间，包络跟踪电源将偏移电容元件上的电压从第一电压驱动到第二电压，使得在从包络跟踪模式转换到转换模式期间，偏移电容元件具有第一电压 ，并且在从转换模式到平均功率跟踪模式的转变期间，偏移电容元件具有第二电压。
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7.发明授权Reducing effects of RF mixer-based artifact using pre-distortion of an envelope power supply signal 有权使用包络电源信号的预失真降低基于RF混频器的伪像的影响公开(公告)号：US09197256B2
公开(公告)日：2015-11-24
申请号：US14048109
申请日：2013-10-08
发明人： Nadim Khlat
CPC分类号： H04B1/0475 , H03F1/0227 , H03F1/0266 , H03F1/3223 , H03F1/3241 , H03F1/3247 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H04B2001/0441
摘要： A radio frequency (RF) power amplifier (PA) and an envelope tracking power supply are disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply signal, which at least partially envelope tracks the RF transmit signal, such that the RF input signal has an RF mixer-based artifact. The envelope tracking power supply provides the envelope power supply signal, which includes mixer-based artifact pre-distortion to at least partially remove effects of the RF mixer-based artifact from the RF transmit signal.
摘要翻译： 公开了射频（RF）功率放大器（PA）和包络跟踪电源。 RFPA接收并放大RF输入信号，以使用包络电源信号提供RF发射信号，该包络电源信号至少部分地包围跟踪RF发射信号，使得RF输入信号具有基于RF混频器的伪影。 信封跟踪电源提供包络电源信号，其包括基于混频器的伪像预失真，以至少部分地从RF发射信号中去除基于RF混频器的伪像的影响。
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公开(公告)号：US20150071382A1
公开(公告)日：2015-03-12
申请号：US14473964
申请日：2014-08-29
申请人： FUJITSU LIMITED
发明人： Donglin WU , Jie WU , Pei CHEN , Jianmin ZHOU , Takanori IWAMATSU
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0238 , H03F1/30 , H03F1/3223 , H03F1/3247 , H03F3/189 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/447 , H03F2200/78 , H03F2201/3215 , H03F2201/3227 , H04B2001/0425 , H04B2001/0433 , H04B2001/0441 , H04B2001/045
摘要： The embodiments of the present disclosure provide a digital pre-distortion transmitter and a method for controlling the same, which increase the efficiency of the power amplifier and improve the linearity of the transmitter. The digital pre-distortion transmitter includes: a pre-distortion unit configured to update a pre-distortion coefficient required by pre-distortion processing, and perform the pre-distortion processing on a baseband signal; a signal process and transmit unit configured to perform signal processing on the pre-distortion-processed baseband signal and transmission thereof; and a feedback signal process unit configured to process a feedback signal of the signal transmitted by the signal process and transmit unit, so as to supply a dynamic drain voltage to a power amplifier in the signal process and transmit unit by using the processed feedback signal; wherein, the pre-distortion unit updates the pre-distortion coefficient by using the feedback signal processed by the feedback signal process unit.
摘要翻译： 本公开的实施例提供一种数字预失真发射机及其控制方法，其提高功率放大器的效率并提高发射机的线性度。 数字预失真发射机包括：预失真单元，被配置为更新预失真处理所需的预失真系数，并对基带信号执行预失真处理; 信号处理和发送单元，被配置为对预失真处理的基带信号进行信号处理和发送; 以及反馈信号处理单元，被配置为处理由信号处理和发送单元发送的信号的反馈信号，以便通过使用处理的反馈信号将信号处理和发送单元中的功率放大器提供动态漏极电压; 其中，预失真单元通过使用由反馈信号处理单元处理的反馈信号来更新预失真系数。
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9.发明申请REDUCING EFFECTS OF RF MIXER-BASED ARTIFACT USING PRE-DISTORTION OF AN ENVELOPE POWER SUPPLY SIGNAL 有权使用前瞻性电源信号预测的基于RF混频器的文献降低效果公开(公告)号：US20140099906A1
公开(公告)日：2014-04-10
申请号：US14048109
申请日：2013-10-08
发明人： Nadim Khlat
CPC分类号： H04B1/0475 , H03F1/0227 , H03F1/0266 , H03F1/3223 , H03F1/3241 , H03F1/3247 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H04B2001/0441
摘要： A radio frequency (RF) power amplifier (PA) and an envelope tracking power supply are disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply signal, which at least partially envelope tracks the RF transmit signal, such that the RF input signal has an RF mixer-based artifact. The envelope tracking power supply provides the envelope power supply signal, which includes mixer-based artifact pre-distortion to at least partially remove effects of the RF mixer-based artifact from the RF transmit signal.
摘要翻译： 公开了射频（RF）功率放大器（PA）和包络跟踪电源。 RFPA接收并放大RF输入信号，以使用包络电源信号提供RF发射信号，该包络电源信号至少部分地包围跟踪RF发射信号，使得RF输入信号具有基于RF混频器的伪影。 信封跟踪电源提供包络电源信号，其包括基于混频器的伪像预失真，以至少部分地从RF发射信号中去除基于RF混频器的伪像的影响。
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公开(公告)号：US20130273979A1
公开(公告)日：2013-10-17
申请号：US13913659
申请日：2013-06-10
申请人： Andreas Langer
发明人： Andreas Langer
CPC分类号： H04W52/52 , H03F1/0227 , H03F1/3223 , H03F3/24 , H03F2200/102 , H04B1/0475 , H04B2001/0441 , H04W52/02 , Y02D70/1262 , Y02D70/40
摘要： Some embodiments of the present disclosure relate to transmission techniques that result in power savings relative to previous solutions. These techniques often transmit a signal-of-interest by using two paths, namely, a transmission path (which includes a power amplifier) and a control path. The signal-of-interest is evaluated in “fast-track” fashion on the control path, such that the control path can “tune” a DC supply signal provided to the power amplifier. Thus, when a delayed version of the signal-of-interest is provided over the transmission path to the power amplifier, the DC supply signal provided to the power amplifier helps ensure that the power amplifier has “just enough” DC supply to ensure reliable operation without dissipating excess power. In this way, the techniques disclosed herein help to reduce power consumption in transmitters, thereby potentially helping to extend battery life and reduce undesired heating for users.
摘要翻译： 本公开的一些实施例涉及相对于先前的解决方案导致功率节省的传输技术。 这些技术通常通过使用两条路径传输感兴趣的信号，即传输路径（包括功率放大器）和控制路径。 在控制路径上以“快速”方式评估感兴趣的信号，使得控制路径可以“调谐”提供给功率放大器的DC电源信号。 因此，当在功率放大器的传输路径上提供感兴趣的信号的延迟版本时，提供给功率放大器的DC电源信号有助于确保功率放大器具有“足够的”直流电源以确保可靠的操作 而不会耗散多余的电力。 以这种方式，本文公开的技术有助于降低发射机中的功率消耗，从而潜在地有助于延长电池寿命并减少用户的不期望的加热。
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