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公开(公告)号：US09356512B2
公开(公告)日：2016-05-31
申请号：US14018648
申请日：2013-09-05
申请人： Broadcom Corporation
发明人： Debopriyo Chowdhury , Ali Afsahi
CPC分类号： H02M3/158 , H02M2001/0022 , H03F1/0227 , H03F3/24
摘要： A communication device, such as a smart phone, includes an envelope tracking power supply. The envelope tracking power supply is configured for direct connection to a supply voltage. The direct connection may be made without connection through an intermediate voltage regulator, such as a low drop out regulator. The supply voltage may be a relatively high battery voltage, for example, that would normally result in greater than permissible voltage limits on the transistors used in conventional envelope tracking power supplies.
摘要翻译： 诸如智能电话的通信设备包括信封跟踪电源。 包络跟踪电源被配置为直接连接到电源电压。 可以通过中间电压调节器（例如低压降调节器）进行直接连接。 电源电压可以是相对较高的电池电压，例如通常会导致在传统的包络跟踪电源中使用的晶体管上允许的电压极限。
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公开(公告)号：US20150146819A1
公开(公告)日：2015-05-28
申请号：US14100931
申请日：2013-12-09
申请人： Broadcom Corporation
发明人： Debopriyo Chowdhury , Ali Afsahi
IPC分类号： H03F1/32
CPC分类号： H03F1/0227 , H03F1/223 , H03F1/3223 , H03F3/195 , H03F3/24 , H03F3/45179 , H03F2200/336 , H03F2203/45394
摘要： A communication device, such as a smart phone, includes an envelope tracking power supply modulator. The envelope tracking power supply modulator receives an envelope tracking reference signal. A baseband controller pre-distorts the envelope tracking reference signal responsive to distortion caused by the envelope tracking power supply modulator. For instance, the pre-distortion may modify the nominal envelope tracking reference signal so that, after the modulator acts on the modified reference signal, the output of the modulator has increased linearity.
摘要翻译： 诸如智能电话的通信设备包括信封跟踪电源调制器。 信封跟踪电源调制器接收包络跟踪参考信号。 基带控制器响应于由包络跟踪电源调制器引起的失真来预失真包络跟踪参考信号。 例如，预失真可以修改标称包络跟踪参考信号，使得在调制器作用于修改的参考信号之后，调制器的输出具有增加的线性度。
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公开(公告)号：US09252723B2
公开(公告)日：2016-02-02
申请号：US14101722
申请日：2013-12-10
申请人： Broadcom Corporation
发明人： Ali Afsahi
CPC分类号： H03F1/565 , H03F1/223 , H03F3/195 , H03F3/21 , H03F3/245 , H03F3/45179 , H03F2203/45506 , H03F2203/45644
摘要： A system includes a differential circuit, multiple cross-coupled transconductance circuits. In some implementations, the differential circuit may include an inductor coil in a balun or transformer. The cross-coupled transconductance circuits may act to reduce the internal resistance of the differential circuit to increase the quality factor of the differential circuit. The cross-coupled transconductance circuit may be connected at differential points along the differential circuit and be engaged and disengaged to linearize the quality factor of the differential circuit.
摘要翻译： 一种系统包括差分电路，多个交叉耦合跨导电路。 在一些实施方案中，差分电路可以包括平衡 - 不平衡转换器或变压器中的电感线圈。 交叉耦合跨导电路可以用于降低差分电路的内部电阻以增加差分电路的品质因数。 交叉耦合跨导电路可以沿着差分电路在差分点处连接并被接合和分离以使差分电路的品质因数线性化。
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公开(公告)号：US09130660B2
公开(公告)日：2015-09-08
申请号：US14200720
申请日：2014-03-07
申请人： Broadcom Corporation
发明人： Ali Afsahi
CPC分类号： H04B1/62 , H03F1/3241 , H04B1/04 , H04B1/0483 , H04B2001/0425
摘要： A communication device, such as a smartphone or tablet, includes a communication interface with noise cancellation logic. The noise cancellation logic includes a lead path and a reference path. A signal source provides a signal to the lead path and the references path. The signal is amplified along the lead path and the reference path. Distortion is imparted onto the signal during amplification on the lead path. A correction signal based on the difference between the amplified signal on the lead path and the amplified signal on the reference path is generated by the noise cancellation logic. The correction signal may reflect to distortion imparted during amplification on the lead path. The correction signal is differentially combined with the amplified signal on the lead path to attempt to remove the distortion and generate an output.
摘要翻译： 诸如智能电话或平板电脑的通信设备包括具有噪声消除逻辑的通信接口。 噪声消除逻辑包括引导路径和参考路径。 信号源向引导路径和参考路径提供信号。 信号沿着引导路径和参考路径被放大。 在引线路径上的放大期间，在信号上施加失真。 通过噪声消除逻辑产生基于引导路径上的放大信号与基准路径上的放大信号之间的差异的校正信号。 校正信号可以反映在引线路径上的放大期间施加的失真。 校正信号与引导路径上的放大信号差分地组合以试图去除失真并产生输出。
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公开(公告)号：US09362866B2
公开(公告)日：2016-06-07
申请号：US14100931
申请日：2013-12-09
申请人： Broadcom Corporation
发明人： Debopriyo Chowdhury , Ali Afsahi
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H03F1/02 , H03F1/22 , H03F1/32 , H03F3/195 , H03F3/24 , H03F3/45
CPC分类号： H03F1/0227 , H03F1/223 , H03F1/3223 , H03F3/195 , H03F3/24 , H03F3/45179 , H03F2200/336 , H03F2203/45394
摘要： A communication device, such as a smart phone, includes an envelope tracking power supply modulator. The envelope tracking power supply modulator receives an envelope tracking reference signal. A baseband controller pre-distorts the envelope tracking reference signal responsive to distortion caused by the envelope tracking power supply modulator. For instance, the pre-distortion may modify the nominal envelope tracking reference signal so that, after the modulator acts on the modified reference signal, the output of the modulator has increased linearity.
摘要翻译： 诸如智能电话的通信设备包括信封跟踪电源调制器。 信封跟踪电源调制器接收包络跟踪参考信号。 基带控制器响应于由包络跟踪电源调制器引起的失真来预失真包络跟踪参考信号。 例如，预失真可以修改标称包络跟踪参考信号，使得在调制器作用于修改的参考信号之后，调制器的输出具有增加的线性度。
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公开(公告)号：US20150109059A1
公开(公告)日：2015-04-23
申请号：US14101722
申请日：2013-12-10
申请人： Broadcom Corporation
发明人： Ali Afsahi
CPC分类号： H03F1/565 , H03F1/223 , H03F3/195 , H03F3/21 , H03F3/245 , H03F3/45179 , H03F2203/45506 , H03F2203/45644
摘要： A system includes a differential circuit, multiple cross-coupled transconductance circuits. In some implementations, the differential circuit may include an inductor coil in a balun or transformer. The cross-coupled transconductance circuits may act to reduce the internal resistance of the differential circuit to increase the quality factor of the differential circuit. The cross-coupled transconductance circuit may be connected at differential points along the differential circuit and be engaged and disengaged to linearize the quality factor of the differential circuit.
摘要翻译： 一种系统包括差分电路，多个交叉耦合跨导电路。 在一些实施方案中，差分电路可以包括平衡 - 不平衡转换器或变压器中的电感线圈。 交叉耦合跨导电路可以用于降低差分电路的内部电阻以增加差分电路的品质因数。 交叉耦合跨导电路可以沿着差分电路在差分点处连接并被接合和分离以使差分电路的品质因数线性化。
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公开(公告)号：US20150085709A1
公开(公告)日：2015-03-26
申请号：US14070195
申请日：2013-11-01
申请人： Broadcom Corporation
发明人： Brian Lee , Ali Afsahi
摘要： An electrical balancing network combined with coupled inductors (EBN) replaces a transmit/receive switch was used for isolation for time division duplexing transmission techniques. The EBN allows simultaneous transmit operation, or simultaneous receive operation, of multiple wireless technologies that would otherwise have to be scheduled for transmit or receive in a time division multiplexing manner. The wireless technologies may be WLAN, LTE, Bluetooth or other wireless technologies.
摘要翻译： 耦合电感器（EBN）的电气平衡网络取代发射/接收开关用于时分双工传输技术的隔离。 EBN允许多个无线技术的同时发送操作或同时接收操作，否则这些无线技术将不得不以时分多路复用方式进行调度以进行发送或接收。 无线技术可以是WLAN，LTE，蓝牙或其他无线技术。
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8.发明授权Method and system for compensating for distortion in a transmitter by utilizing a digital predistortion scheme with a feedback mixer configuration 有权通过利用具有反馈混频器配置的数字预失真方案来补偿发射机中的失真的方法和系统公开(公告)号：US08948700B2
公开(公告)日：2015-02-03
申请号：US13971224
申请日：2013-08-20
申请人： Broadcom Corporation
发明人： Arya Behzad , Ali Afsahi , Vikram Magoon , Mark Gonikberg , George Varghese , Guruprasad Revanna
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2200/451 , H04L27/368
摘要： Aspects of a method and system for compensating for distortion in a transmitter by utilizing a digital predistortion scheme with a feedback mixer configuration are presented. Aspects of the system may include an RF transmitter that enables generation of an RF output signal in response to one or more generated input signals. One or more feedback signals may be generated by performing frequency downconversion on the RF output signal within a corresponding one or more feedback mixer circuits. The generated one or more feedback signals may be inserted at a corresponding one or more insertion points in an RF receiver. Each insertion point may be between a receiver mixer circuit and corresponding circuits that generate a baseband signal based on the corresponding one of the feedback signals.
摘要翻译： 提出了一种通过利用具有反馈混频器配置的数字预失真方案来补偿发射机中的失真的方法和系统的方面。 系统的方面可以包括RF发射器，其能够响应于一个或多个所生成的输入信号而产生RF输出信号。 可以通过对相应的一个或多个反馈混频器电路中的RF输出信号执行频率下变频来产生一个或多个反馈信号。 所生成的一个或多个反馈信号可以插入RF接收器中相应的一个或多个插入点。 每个插入点可以在接收机混合器电路和基于相应的一个反馈信号产生基带信号的相应电路之间。
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9.发明授权Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer 有权通过利用具有单个反馈混频器的数字预失真方案来补偿发射机中的估计失真的方法和系统公开(公告)号：US08942635B2
公开(公告)日：2015-01-27
申请号：US14080898
申请日：2013-11-15
申请人： Broadcom Corporation
发明人： Arya Behzad , Ali Afsahi , Vikram Magoon , Alok Gupta
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2200/336 , H03F2200/57 , H04L27/368
摘要： Aspects of a method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer are presented. Aspects of the system may include at least one circuit that enables generation of an output signal in response to one or more generated input signals. A feedback signal may be generated within a single feedback mixer circuit that may perform a frequency mix-down operation on the generated output signal. The generated feedback signal may be inserted at one or more insertion points in a receiver. Each of the insertion points may be located between a mixer stage of the receiver, and one or more circuits that generate a baseband signal based on the generated feedback signal.
摘要翻译： 提出了通过利用具有单个反馈混频器的数字预失真方案来补偿发射机中的估计失真的方法和系统的方面。 该系统的方面可以包括响应于一个或多个所生成的输入信号而能够产生输出信号的至少一个电路。 可以在可以对所生成的输出信号执行频率混合运算的单个反馈混频器电路内产生反馈信号。 产生的反馈信号可以插入接收器中的一个或多个插入点。 每个插入点可以位于接收器的混合器级之间，以及基于产生的反馈信号产生基带信号的一个或多个电路。
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10.发明申请公开(公告)号：US20130149976A1
公开(公告)日：2013-06-13
申请号：US13758137
申请日：2013-02-04
申请人： Broadcom Corporation
发明人： Meng-An Pan , Ali Afsahi , Vikram Magoon , Arya Behzad
IPC分类号： H04B1/02
CPC分类号： H04B1/02 , H03F1/32 , H03F3/24 , H03F2200/168 , H03F2200/321 , H03F2200/336 , H04B1/005 , H04B2001/0408
摘要： Disclosed are various embodiments for transmitting radio frequency signals. A radio frequency transmitter may be configured to generate an analog signal comprising an in-phase component and a quadrature-phase component. The in-phase component and the quadrature-phase component of the analog signal may be provided to multiple radio frequency processing chains. One of the radio frequency processing chains may generate an output radio frequency signal based on the in-phase component and the quadrature-phase component.
摘要翻译： 公开了用于发送射频信号的各种实施例。 射频发射器可以被配置为产生包括同相分量和正交相分量的模拟信号。 模拟信号的同相分量和正交相位分量可以被提供给多个射频处理链。 无线电频率处理链之一可以基于同相分量和正交相分量产生输出射频信号。
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