CN103296977A - Rf功率放大器校准数据的单调转换 - Google Patents
Rf功率放大器校准数据的单调转换 Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
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- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
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Abstract
本发明涉及RF功率放大器校准数据的单调转换。公开了一种电路,其包括数据存储器和处理电路。数据存储器用以存储基于查找表(LUT)的射频(RF)功率放大器(PA)校准数据。处理电路转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据。如此,使用基于单调响应曲线的数据基于RF输入信号的量值确定包络电源控制信号的量值。
Description
相关申请
本申请要求2011年11月30日提交美国临时专利申请号61/565,138的权益,通过引用该公开的全文而将其并入于此。
技术领域
本公开实施例涉及用于校准射频(RF)功率放大器(PA)的校准***和方法,其可以用于RF通信***中。
背景技术
由于RF通信协议演化,数据速率趋向增加,其趋向使得传输的RF信号的带宽增加以支持较高数据速率。然而,与传输的RF信号的增加的带宽相比,传输的和接收的RF信号之间的双王频率间隔可以相对小,因此提出对RF通信***的严厉噪声约束。此外,RF发射机需要尽可能的高效以最大化电池寿命。因此,从基于开关转换器的包络电源为发射机功率放大器供电以最大化效率。如此,可能需要最小化由包络电源产生的噪声以满足RF通信***的噪声需求。
发明内容
本公开的实施例涉及电路,其包括数据存储器和处理电路。数据存储器被用于存储基于查找表(LUT)的射频(RF)功率放大器(PA)校准数据。处理电路转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据。如此,使用基于单调响应曲线的数据基于RF输入信号的量值确定包络电源控制信号的量值。
由于校准处理期间固有的***噪声,基于LUT的RF PA校准数据可能是固有地有噪声。结果,当使用基于LUT的RF PA校准数据以提供包络电源信号给RF***的RF PA时,噪声可被引入RF***,其可在RF***中引起性能问题,诸如使接收机灵敏度降级。通过转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据,可降低RF***中的噪声。
本领域技术人员在与附图关联地阅读以下详细描述后将理解本公开的范围并且意识到其附加方面。
附图说明
被并入并形成本说明书一部分的附图示出本公开的若干方面,并且连同描述用于解释本公开的原理。
图1示出根据电路的一实施例的使用在射频(RF)功率放大器(PA)校准环境中的电路。
图2示出关联于图1中示出的RF PA校准环境的校准数据响应曲线和单调响应曲线。
图3示出根据RF校准电路的一实施例的图1中示出的RF校准电路的细节。
图4示出根据RF校准电路的替代实施例的图1中示出的RF校准电路的细节。
图5示出根据电路的一实施例的使用在RF通信***中的电路。
图6示出根据电路的替代实施例的使用在RF通信***中的电路。
图7示出根据的电路的附加实施例的使用在RF通信***中的电路。
图8示出根据电路的另一实施例的使用在RF通信***中的电路。
图9示出根据电路的进一步实施例的使用在RF通信***中的电路。
图10示出根据电路的补充实施例的使用在RF通信***中的电路。
图11示出根据电路的一实施例的使用在RF通信***中的电路。
具体实施方式
以下阐明的实施例呈现了必要的信息以使本领域技术人员能够实现本公开并且示出实现本公开的最佳模式。在根据附图阅读以下描述时,本领域技术人员将理解本公开的概念并且将认识到这些概念的应用没有被在此特别提出。应当理解这些概念和应用落在本公开和所附权利要求书的范围内。
本公开的实施例涉及电路,其包括数据存储器和处理电路。数据存储器被用于存储基于查找表(LUT)的射频(RF)功率放大器(PA)校准数据。处理电路转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据。如此,使用基于单调响应曲线的数据基于RF输入信号的量值确定包络电源控制信号的量值。
由于校准处理期间固有的***噪声,基于LUT的RF PA校准数据可能是固有地有噪声。结果,当使用基于LUT的RF PA校准数据以提供包络电源信号给RF***的RFPA时,噪声可被引入RF***,其可在RF***中引起性能问题,诸如使接收机灵敏度降级。通过转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据,可降低RF***中的噪声。
图1示出根据电路10一实施例的使用在RF PA校准环境中的电路10。电路10包括RF校准电路12和校准RF PA14。在校准RF PA14的校准期间,RF校准电路12提供校准RF输入信号CRFI和校准包络电源信号CEPS给校准RFPA14。校准RF PA14使用校准包络电源信号CEPS以提供用于放大的功率来接收并放大校准RF输入信号CRFI以提供校准RF输出信号CRFO。RF校准电路12接收校准RF输出信号CRFO。
在校准RF PA14的校准期间,RF校准电路12改变校准RF输入信号CRFI的量值并改变校准包络电源信号CEPS的量值并测量校准RF输出信号CRFO的所得量值。校准RF输入信号CRFI的量值关联于输入功率级并且校准RF输出信号CRFO的量值关联于输出功率级。在这点上,RF校准电路12基于校准RF输入信号CRFI、校准包络电源信号CEPS和校准RF输出信号CRFO的量值创建RF PA校准数据16。
在校准RFPA14的校准的一实施例中,为了在校准RF功率范围上近似恒定的增益操作,RF PA校准数据16基于对校准RF PA14进行校准。该恒定增益操作被称为isogain。此外,在isogain条件期间,校准RF PA14可被进行压缩,使得校准包络电源信号CEPS的量值不足以以完全线性方式保持校准RF PA14操作。如此,在压缩期间,在线性操作期间,对校准RF输入信号CRFI的增量改变的校准RF输出信号CRFO的增量响应小于校准RF输出信号CRFO的增量响应。利用压缩操作校准RF PA14可增加校准RF PA14的效率,但可使校准RF PA14的线性降级。因此,通过利用isogain和压缩来操作校准RF PA14,可实现效率和线性之间的最佳的平衡。
图2示出根据校准图1中示出的校准RF PA14的一实施例的关联于图1中示出的RF PA校准环境的校准数据响应曲线18和单调响应曲线20。校准数据响应曲线18基于对RF PA校准数据16的绘制(图1)。特别地,校准数据响应曲线18使校准包络电源信号CEPS(图1)与校准RF输入信号CRFI(图1)相关。然而,由于校准处理期间固有的***噪声,校准数据响应曲线18可以是有噪声的,如所图所示。该噪声可以使RF校准电路12(图1)准确校准校准RFPA14(图1)的能力降级。然而,单调转换可被应用到RF PA校准数据16(图1)以滤除噪声的至少一些来提供单调响应曲线20。
单调响应曲线是不具有斜率反转(reversal)的响应曲线。通常,单调响应曲线具有第一特性或第二特性。具有第一特性的单调响应曲线在曲线上的任意点处具有为零或正但从不为负的斜率。具有第二特性的单调响应曲线在曲线上的任意点处具有为零或负但从不为正的斜率。图2中示出的单调响应曲线20具有第一特性,使得相对于校准RF输入信号CRFI单调响应曲线20代表校准包络电源信号CEPS,并且当校准RF输入信号CRFI的包络增加时,校准包络电源信号CEPS的量值从不减少。通过使用单调响应曲线20代替校准数据响应曲线18,可增强校准RF PA14(图1)的准确操作。
图3示出根据RF校准电路12的一个实施例的图1中示出的RF校准电路12的细节。图3中示出的RF校准电路12类似于图1中示出的RF校准电路12,除了图3中示出的RF校准电路12进一步包括数据存储器22和处理电路24。数据存储器22包括基于LUT的RF PA校准数据26和基于单调响应曲线的数据28。通过将RFF PA校准数据16(图1)表达为基于LUT的格式,基于LUT的RF PA校准数据26基于RF PA校准数据16(图1)。
基于单调响应曲线的数据28基于单调响应曲线20(图2)。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的数据。处理电路24转换基于LUT的RF PA校准电路26的至少一部分以提供基于单调响应曲线的数据28。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的RF PA校准数据26的预失真以降低校准包络电源信号CEPS上的噪声。
通过使用基于单调响应曲线的数据28提供校准包络电源信号CEPS,RF校准电路12可增强校准RF PA14的准确操作,使得校准包络电源信号CEPS的量值基于校准RF输入信号CRFI的量值。在校准RF PA14的校准的一实施例中,针对在校准RF功率范围上的近似恒定的增益操作,基于LUT的RF PA校准数据26基于对校准RF PA14的校准。
在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28以基于LUT的RF PA校准数据26的至少一部分的高阶多项式内插为基础。在高阶多项式内插的第一实施例中,使用在内插中的数据点的数量至少两倍于高阶多项式内插的阶。在高阶多项式内插的第二实施例中,使用在内插中的数据点的数量至少五倍于高阶多项式内插的阶。在高阶多项式内插的第三实施例中,使用在内插中的数据点的数量至少十倍于高阶多项式内插的阶。在高阶多项式内插的第四实施例中,使用在内插中的数据点的数量至少五十倍于高阶多项式内插的阶。在高阶多项式内插的第五实施例中,使用在内插中的数据点的数量至少100倍于高阶多项式内插的阶。在高阶多项式内插的第六实施例中,使用在内插中的数据点的数量至少500倍于高阶多项式内插的阶。在高阶多项式内插的第七实施例中,使用在内插中的数据点的数量小于1000倍高阶多项式内插的阶。
图4示出根据RF校准电路12的替代实施例的图1中示出的RF校准电路12的细节。RF校准电路12包括校准包络电源30、RF组合器和放大器32、RF负载、衰减器、以及分流器34、本地振荡器36、第一同相混频器38、第一正交相位混频器40、第二同相混频器42、第二正交相位混频器44、同相数模转换器(DAC)46、正交相位DAC48、同相模数转换器(ADC)50、以及正交相位ADC52。
在校准RF PA14的校准期间,校准包络电源30提供校准包络电源信号CEPS给校准RF PA14,RF组合器和放大器32提供校准RF输入信号CRFI给校准RF PA14,并且RF负载、衰减器、以及分流器34从校准RF PA14接收校准RF输出信号CRFO。本地振荡器36提供同相本地振荡器信号LOI给第一同相混频器38和第二同相混频器42。本地振荡器36提供正交相位本地振荡器信号LOQ给第一正交相位混频器40并且提供给第二正交相位混频器44。在校准期间,正交相位本地振荡器信号LOQ从同相本地振荡器信号LOI相移约90度。
同相DAC46接收并数模转换同相数字输入信号DII以向第一同相混频器38馈送。正交相位DAC48接收并数模转换正交相位数字输入信号DQI以向第一正交相位混频器40馈送。在校准期间,第一同相混频器38和第一正交相位混频器40使用本地振荡器信号LOI、LOQ上变频同相和正交相位DAC输出信号以向RF组合器和放大器32馈送。RF组合器和放大器32组合并放大上变频的信号以提供校准RF输入信号CRFI。
在校准期间,RF负载、衰减器、和分流器34呈送RF负载给校准RF PA14。此外,RF负载、衰减器、和分流器34接收并分流校准RF输出信号CRFO以向第二同相混频器42和第二正交相位混频器44馈送。第二同相混频器42和第二正交相位混频器44使用本地振荡器信号LOI、LOQ下变频所分流的RF信号以向同相ADC50和正交相位ADC52馈送。同相ADC50模数转换来自第二同相混频器42的信号以提供同相数字输出信号DIO。正交相位ADC52模数转换来自第二正交相位混频器44的信号以提供正交相位数字输出信号DQO。
在校准期间,RF校准电路12可改变校准包络电源信号CEPS、同相本地振荡器信号LOI、正交相位本地振荡器信号LOQ、同相数字输入信号DII、正交相位数字输入信号DQI、或其任意组合,并经由同向数字输出信号DIO和正交相位数字输出信号DQO测量校准结果以提供RF PA校准数据16。
然而,校准期间会从多个噪声源引入了噪声。校准期间噪声源的例子可以包括本地振荡器信号LOI、LOQ到任意意外路径的泄漏、信号从本地振荡器36到任意意外路径的泄漏、同相本地振荡器信号LOI与正交相位本地振荡器信号LOQ之间的不均衡、同相DAC46和正交相位DAC48之间的转换失配、同相ADC50和正交相位ADC52之间的转换失配、第一同相混频器38和第一正交相位混频器40之间的转换失配、第二同相混频器42和第二正交相位混频器44之间的转换失配、引入到上变频路径中的噪声、引入到下变频路径中的噪声、或其任意组合。
图5示出根据电路10的一实施例的使用在RF通信***中的电路10。电路10包括RF发射机电路54、RF***控制电路56、RF前端电路58、RF天线60、和DC电源62。RF发射机电路54包括发射机控制电路64、RF PA66、包络跟踪电源68、和PA偏置电路70。RF***控制电路56包括基于单调响应曲线的数据28。
在电路10的一实施例中,RF前端电路58经由RF天线60接收、处理、和转发RF接收信号RFR给RF***控制电路56。RF***控制电路56提供包络电源控制信号VRMP和发射机配置信号PACS给发射机控制电路64。RF***控制电路56提供RF输入信号RFI给RF PA66。DC电源62提供DC源信号VDC给包络跟踪电源68。在DC电源62的一实施例中,DC电源62是电池。
发射机控制电路64耦合至包络跟踪电源68并耦合至PA偏置电路70。基于包络电源控制信号VRMP,包络跟踪电源68提供包络电源信号EPS给RF PA66。DC源信号VDC提供功率给包络跟踪电源68。如此,包络电源信号EPS基于DC源信号VDC。包络电源控制信号VRMP代表包络电源信号EPS的设置点。通常,包络电源信号EPS基于包络电源控制信号VRMP。使用包络电源信号EPS,RF PA66接收并放大RF输入信号RFI以提供RF传输信号RFT。包络电源信号EPS提供用于放大的功率。
通过使用基于单调响应曲线的数据28提供包络电源控制信号VRMP,RF***控制电路56可增强RF PA66的准确操作,使得包络电源控制信号VRMP的量值基于RF输入信号RFI的量值。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的RF PA校准数据26(图3)的预失真以降低包络电源信号EPS上的噪声,使得包络电源信号EPS基于包络电源控制信号VRMP。在RF PA66的一实施例中,RF PA66是校准RF PA14(图1)。在RF PA66的替代实施例中,RF PA66不是校准RF PA14(图1)。
经由RF天线60,RF前端电路58接收、处理、并传输RF传输信号RFT。在RF发射机电路54的一实施例中,基于发射机配置信号PACS,发射机控制电路64配置RF发射机电路54。PA偏置电路70提供PA偏置信号PAB给RF PA66。在这点上,经由PA偏置信号PAB,PA偏置电路70偏置RF PA66。在PA偏置电路70的一实施例中,基于发射机配置信号PACS,PA偏置电路70偏置RF PA66。在RF前端电路58的一实施例中,RF前端电路58包括至少一个RF开关、至少一个RF放大器、至少一个RF滤波器、至少一个RF双工器、至少一个RF共用器(diplexer)、至少一个RF放大器等、或其任意组合。在RF***控制电路56的一实施例中,RF***控制电路56是RF发射机电路,其可以包括RF收发器IC、基带控制器电路等、或其任意组合。在RF发射机电路54的一实施例中,包络电源信号EPS提供用于放大的功率并且包络跟踪RF传输信号RFT。
图6示出根据电路10的替代实施例的使用在RF通信***中的电路10。图6中示出的电路10类似于图5中示出的电路10,除了图6中示出的电路10中,RF发射机电路54进一步包括数字通信接口72,其耦合在发射机控制电路64和数字通信总线74之间。数字通信总线74也耦合至RF***控制电路56。如此,经由数字通信总线74和数字通信接口72,RF***控制电路56提供包络电源控制信号VRMP(图5)和发射机配置信号PACS(图5)给发射机控制电路64。
图7示出根据电路10的附加实施例的使用在RF通信***中的电路10。图7示出根据包络跟踪电源68的一实施例的图5中示出的包络跟踪电源68的细节。包络跟踪电源68包括电源控制电路76、并行放大器78、和开关电源80。电源控制电路76控制并行放大器78和开关电源80。并行放大器78和开关电源80提供包络电源信号EPS,使得并行放大器78部分地提供包络电源信号EPS并且开关电源80部分地提供包络电源信号EPS。开关电源80比并行放大器78更高效地提供功率。然而,并行放大器78比开关电源80更准确地提供包络电源信号EPS。如此,基于包络电源信号EPS的设置点,并行放大器78调节包络电源信号EPS的电压,并且开关电源80操作以驱动来自并行放大器78的输出电流朝向零以最大化效率。在这点上,并行放大器78运转类似电压源并且开关电源80运转类似电流源。
图8示出根据电路10的另一实施例的使用在RF通信***中的电路10。图8中示出的电路10类似于图5中示出的电路10,除了图8中示出的电路10中,RF***控制电路56包括数据存储器22和处理电路24。数据存储器22包括基于LUT的RF PA校准数据26和基于单调响应曲线的数据28。
基于单调响应曲线的数据28基于单调响应曲线20(图2)。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的数据。处理电路24转换基于LUT的RF PA校准数据26的至少一部分以提供基于单调响应曲线的数据28。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的RF PA校准数据26的预失真以减少包络电源信号EPS上的噪声。
通过使用基于单调响应曲线的数据28提供包络电源控制信号VRMP,RF***控制电路56可以增强RF PA66的准确操作,使得包络电源控制信号VRMP的量值基于RF输入信号RFI的量值。在电路10的一实施例中,针对在RF功率范附上的近似恒定增益操作,基于LUT的RF PA校准数据26基于操作RF PA66。
图9示出根据电路10的进一步实施例的使用在RF通信***中的电路10。图9中示出的电路10类似于图8中示出的电路10,除了图9中示出的电路10中,RF发射机电路54进一步包括数字通信接口72,其耦合于发射机控制电路64和数字通信总线74之间。数字通信总线74也耦合于RF***控制电路56。如此,经由数字通信总线74和数字通信接口72,RF***控制电路56提供包络电源控制信号VRMP(图8)和发射机配置信号PACS(图8)给发射机控制电路64。
图10示出根据电路10的补充实施例的使用在RF通信***中的电路10。图10中示出的电路10类似于图5中示出的电路10,除了图10中示出的电路10中,发射机控制电路64包括数据存储器22和处理电路24。通常,RF发射机电路54包络数据存储器22和处理电路24。数据存储器22包络基于LUT的RFPA校准数据26和基于单调响应曲线的数据28。此外,RF***控制电路56提供未修改的包络电源控制信号VRPU代替包络电源控制信号VRMP给发射机控制电路64。
基于单调响应曲线的数据28基于单调响应曲线20(图2)。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的数据。处理电路24转换基于LUT的RF PA校准数据26的至少一部分以提供基于单调响应曲线的数据28。在基于单调响应曲线的数据28的一实施例中,基于单调响应曲线的数据28是基于LUT的RF PA校准数据26的预失真以减少包络电源信号EPS上的噪声。
通过使用基于单调响应曲线的数据28提供包络电源控制信号VRMP(未示出)给包络跟踪电源68,发射机控制电路64可增强RF PA66的准确操作,使得包络电源控制信号VRMP(未示出)的量值基于RF输入信号RFI和未修改的包络电源控制信号VRPU的量值。基于包络电源控制信号VRMP(未示出),RF发射机电路54提供包络电源信号EPS给RF PA66。在电路10的一实施例中,针对在RF功率范围上的近似恒定增益操作,基于LUT的RF PA校准数据26基于操作RF PA66。
图11示出根据电路10的一实施例的使用在RF通信***中的电路10。图11中示出的电路10类似于图10中示出的电路10,除了在图11中示出的电路10中,RF发射机电路54进一步包括数字通信接口72,其耦合于发射机控制电路64和数字通信总线74之间。数字通信总线74也耦合于RF***控制电路56。如此,经由数字通信总线74和数字通信接口72,RF***控制电路56提供未修改的包络电源控制信号VRPU(图10)和发射机配置信号PACS(图10)给发射机控制电路64。
本领域技术人员将意识到对本公开的实施例的改进和修改。所有这样的改进和修改被认为在此处公开的概念和以下的权利要求书的范围内。
Claims (24)
1.一种电路,包括:
数据存储器,其适于存储基于查找表(LUT)的射频(RF)功率放大器(PA)校准数据;和
处理电路,其适于转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据,其中包络电源控制信号的量值基于RF输入信号的量值并且使用所述基于单调响应曲线的数据。
2.如权利要求1的电路,其中所述基于单调响应曲线的数据是基于LUT的RF PA校准数据的预失真以减少包络电源信号上的噪声,其中所述包络电源信号基于所述包络电源控制信号。
3.如权利要求1的电路,其中所述基于单调响应曲线的数据以及基于LUT的RF PA校准数据的至少一部分的高阶多项式内插为基础。
4.如权利要求3的电路,其中使用在高阶多项式内插中的数据点的数量至少十倍于所述高阶多项式内插的阶。
5.如权利要求1的电路,其中所述基于单调响应曲线的数据是基于LUT的数据。
6.如权利要求1的电路,其中针对在校准RF功率范围上的近似恒定增益操作,基于LUT的RF PA校准数据基于对校准RF PA进行校准。
7.如权利要求1的电路,其中所述基于单调响应曲线的数据基于单调响应曲线,所述单调响应曲线代表相对于校准RF输入信号的校准包络电源信号。
8.如权利要求7的电路,其中当所述校准RF输入信号的包络增加时,校准包络电源信号的量值从不减少。
9.如权利要求7的电路,其中使用所述校准包络电源信号提供用于放大的功率,校准RF PA适于接收并放大校准RF输入信号以提供校准RF输出信号。
10.如权利要求9的电路,其中:
包络电源信号基于所述包络电源控制信号;
使用所述包络电源信号以提供用于放大的功率,RF PA适于接收并放大RF输入信号以提供RF传输信号;和
所述RF PA是校准RF PA。
11.如权利要求9的电路,其中:
包络电源信号基于所述包络电源控制信号;
使用所述包络电源信号提供用于放大的功率,RF PA适于接收并放大RF输入信号以提供RF传输信号;和
所述RF PA不是校准RF PA。
12.如权利要求1的电路,进一步包括RF校准电路,其包括所述数据存储器和所述处理电路。
13.如权利要求12的电路,其中RF***控制电路适于使用所述基于单调响应曲线的数据基于RF输入信号的量值来提供所述包络电源控制信号。
14.如权利要求13的电路,其中所述RF***控制电路进一步适于提供RF输入信号。
15.如权利要求13的电路,其中所述RF***控制电路进一步适于经由数字通信总线提供所述包络电源控制信号。
16.如权利要求1的电路,进一步包括RF***控制电路,其包括所述数据存储器和所述处理电路。
17.如权利要求16的电路,其中所述RF***控制电路适于使用所述基于单调响应曲线的数据基于RF输入信号的量值来提供所述包络电源控制信号。
18.如权利要求17的电路,其中所述RF***控制电路进一步适于提供RF输入信号。
19.如权利要求17的电路,其中所述RF***控制电路进一步适于经由数字通信总线提供所述包络电源控制信号。
20.如权利要求1的电路,进一步包括RF发射机电路,其包括所述数据存储器和所述处理电路。
21.如权利要求20的电路,其中所述RF发射机电路适于基于所述包络电源控制信号提供包络电源信号。
22.如权利要求21的电路,其中所述RF发射机电路包括RF PA,所述RF PA适于使用所述包络电源信号以提供用于放大的功率接收并放大RF输入信号以提供RF传输信号。
23.如权利要求20的电路,其中所述RF发射机电路进一步适于经由数字通信总线接收未修改的包络电源控制信号。
24.一种方法,包括:
存储基于查找表(LUT)的射频(RF)功率放大器(PA)校准数据;和
转换基于LUT的RF PA校准数据的至少一部分以提供基于单调响应曲线的数据,其中包络电源控制信号的量值基于RF输入信号的量值并且使用所述基于单调响应曲线的数据。
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US13/684,826 US8975959B2 (en) | 2011-11-30 | 2012-11-26 | Monotonic conversion of RF power amplifier calibration data |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105103440A (zh) * | 2013-02-01 | 2015-11-25 | 追踪有限公司 | 具有反馈的包络追踪调制器 |
CN105721067A (zh) * | 2014-12-18 | 2016-06-29 | 英特尔Ip公司 | 具有用于包络跟踪的电源负载变化降噪的通信设备及方法 |
CN107408922A (zh) * | 2015-02-23 | 2017-11-28 | 诺基亚技术有限公司 | 用于向放大器供应电力的方法和装置 |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9099961B2 (en) | 2010-04-19 | 2015-08-04 | Rf Micro Devices, Inc. | Output impedance compensation of a pseudo-envelope follower power management system |
US9431974B2 (en) | 2010-04-19 | 2016-08-30 | Qorvo Us, Inc. | Pseudo-envelope following feedback delay compensation |
EP2782247B1 (en) | 2010-04-19 | 2018-08-15 | Qorvo US, Inc. | Pseudo-envelope following power management system |
WO2012047738A1 (en) | 2010-09-29 | 2012-04-12 | Rf Micro Devices, Inc. | SINGLE μC-BUCKBOOST CONVERTER WITH MULTIPLE REGULATED SUPPLY OUTPUTS |
US9379667B2 (en) | 2011-05-05 | 2016-06-28 | Rf Micro Devices, Inc. | Multiple power supply input parallel amplifier based envelope tracking |
US9247496B2 (en) | 2011-05-05 | 2016-01-26 | Rf Micro Devices, Inc. | Power loop control based envelope tracking |
US9246460B2 (en) | 2011-05-05 | 2016-01-26 | Rf Micro Devices, Inc. | Power management architecture for modulated and constant supply operation |
US9263996B2 (en) | 2011-07-20 | 2016-02-16 | Rf Micro Devices, Inc. | Quasi iso-gain supply voltage function for envelope tracking systems |
US9484797B2 (en) | 2011-10-26 | 2016-11-01 | Qorvo Us, Inc. | RF switching converter with ripple correction |
US9294041B2 (en) | 2011-10-26 | 2016-03-22 | Rf Micro Devices, Inc. | Average frequency control of switcher for envelope tracking |
US9515621B2 (en) | 2011-11-30 | 2016-12-06 | Qorvo Us, Inc. | Multimode RF amplifier system |
US9250643B2 (en) | 2011-11-30 | 2016-02-02 | Rf Micro Devices, Inc. | Using a switching signal delay to reduce noise from a switching power supply |
US9256234B2 (en) | 2011-12-01 | 2016-02-09 | Rf Micro Devices, Inc. | Voltage offset loop for a switching controller |
US9041365B2 (en) | 2011-12-01 | 2015-05-26 | Rf Micro Devices, Inc. | Multiple mode RF power converter |
US9280163B2 (en) | 2011-12-01 | 2016-03-08 | Rf Micro Devices, Inc. | Average power tracking controller |
US9494962B2 (en) | 2011-12-02 | 2016-11-15 | Rf Micro Devices, Inc. | Phase reconfigurable switching power supply |
US9813036B2 (en) | 2011-12-16 | 2017-11-07 | Qorvo Us, Inc. | Dynamic loadline power amplifier with baseband linearization |
US9298198B2 (en) | 2011-12-28 | 2016-03-29 | Rf Micro Devices, Inc. | Noise reduction for envelope tracking |
US9225231B2 (en) | 2012-09-14 | 2015-12-29 | Rf Micro Devices, Inc. | Open loop ripple cancellation circuit in a DC-DC converter |
US9207692B2 (en) | 2012-10-18 | 2015-12-08 | Rf Micro Devices, Inc. | Transitioning from envelope tracking to average power tracking |
US9627975B2 (en) | 2012-11-16 | 2017-04-18 | Qorvo Us, Inc. | Modulated power supply system and method with automatic transition between buck and boost modes |
US9929696B2 (en) | 2013-01-24 | 2018-03-27 | Qorvo Us, Inc. | Communications based adjustments of an offset capacitive voltage |
US9479118B2 (en) | 2013-04-16 | 2016-10-25 | Rf Micro Devices, Inc. | Dual instantaneous envelope tracking |
EP3005542A4 (en) * | 2013-05-29 | 2016-11-30 | Nokia Technologies Oy | AMPLIFICATION OF A RADIO FREQUENCY SIGNAL |
US9374005B2 (en) | 2013-08-13 | 2016-06-21 | Rf Micro Devices, Inc. | Expanded range DC-DC converter |
US9231627B2 (en) * | 2013-11-06 | 2016-01-05 | Stmicroelectronics International N.V. | Adaptive ISO-Gain pre-distortion for an RF power amplifier operating in envelope tracking |
US9614476B2 (en) | 2014-07-01 | 2017-04-04 | Qorvo Us, Inc. | Group delay calibration of RF envelope tracking |
US9762284B2 (en) * | 2015-04-06 | 2017-09-12 | Analog Devices, Inc. | Circuits and systems for transmitter calibration |
US9941844B2 (en) | 2015-07-01 | 2018-04-10 | Qorvo Us, Inc. | Dual-mode envelope tracking power converter circuitry |
US9912297B2 (en) | 2015-07-01 | 2018-03-06 | Qorvo Us, Inc. | Envelope tracking power converter circuitry |
US9973147B2 (en) | 2016-05-10 | 2018-05-15 | Qorvo Us, Inc. | Envelope tracking power management circuit |
US10476437B2 (en) | 2018-03-15 | 2019-11-12 | Qorvo Us, Inc. | Multimode voltage tracker circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1518209A (zh) * | 2003-01-15 | 2004-08-04 | 3 | 一种非相关的自适应前置补偿器 |
CN101626355A (zh) * | 2009-08-11 | 2010-01-13 | 北京天碁科技有限公司 | 一种多输入多输出终端的校准装置及校准方法 |
CN101635697A (zh) * | 2009-08-04 | 2010-01-27 | 京信通信***(中国)有限公司 | 一种发射机及发射机处理信号的方法 |
US20100327971A1 (en) * | 2009-06-26 | 2010-12-30 | Fujitsu Limited | Transmission device, distortion compensation device, and distortion compensation method |
Family Cites Families (252)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3980964A (en) | 1974-05-20 | 1976-09-14 | Grodinsky Robert M | Noise reduction circuit |
US3969682A (en) | 1974-10-21 | 1976-07-13 | Oberheim Electronics Inc. | Circuit for dynamic control of phase shift |
US4587552A (en) | 1983-09-02 | 1986-05-06 | Rca Corporation | Apparatus for generating the magnitude of the vector sum of two orthogonal signals as for use in a digital TV receiver |
US4692889A (en) | 1984-09-28 | 1987-09-08 | Rca Corporation | Circuitry for calculating magnitude of vector sum from its orthogonal components in digital television receiver |
US4831258A (en) | 1988-03-04 | 1989-05-16 | Exergen Corporation | Dual sensor radiation detector |
US4996500A (en) | 1989-10-24 | 1991-02-26 | Hewlett-Packard Company | Automatic control system |
US5486871A (en) | 1990-06-01 | 1996-01-23 | Thomson Consumer Electronics, Inc. | Automatic letterbox detection |
US5351087A (en) | 1990-06-01 | 1994-09-27 | Thomson Consumer Electronics, Inc. | Two stage interpolation system |
US5420643A (en) | 1990-06-01 | 1995-05-30 | Thomson Consumer Electronics, Inc. | Chrominance processing system for compressing and expanding video data |
US5311309A (en) | 1990-06-01 | 1994-05-10 | Thomson Consumer Electronics, Inc. | Luminance processing system for compressing and expanding video data |
US5099203A (en) | 1990-06-05 | 1992-03-24 | Continental Electronics Corporation | Power amplifier having multiple switched stages and method of operating same |
DE4038111A1 (de) | 1990-11-29 | 1992-06-04 | Thomson Brandt Gmbh | Universalfilter |
US5146504A (en) | 1990-12-07 | 1992-09-08 | Motorola, Inc. | Speech selective automatic gain control |
US5187396A (en) | 1991-05-22 | 1993-02-16 | Benchmarq Microelectronics, Inc. | Differential comparator powered from signal input terminals for use in power switching applications |
JPH0828965B2 (ja) | 1992-09-02 | 1996-03-21 | 日本電気株式会社 | 電圧変換回路 |
US5414614A (en) | 1994-06-06 | 1995-05-09 | Motorola, Inc. | Dynamically configurable switched capacitor power supply and method |
US5822318A (en) | 1994-07-29 | 1998-10-13 | Qualcomm Incorporated | Method and apparatus for controlling power in a variable rate communication system |
US5646621A (en) | 1994-11-02 | 1997-07-08 | Advanced Micro Devices, Inc. | Delta-sigma ADC with multi-stage decimation filter and gain compensation filter |
US5581454A (en) | 1994-11-22 | 1996-12-03 | Collins; Hansel | High power switched capacitor voltage conversion and regulation apparatus |
US5541547A (en) | 1995-05-03 | 1996-07-30 | Sun Microsystems, Inc. | Test generator system for controllably inducing power pin latch-up and signal pin latch-up in a CMOS device |
JP3110288B2 (ja) | 1995-07-21 | 2000-11-20 | 日本電気株式会社 | 指数対数変換回路 |
US5715526A (en) | 1995-09-08 | 1998-02-03 | Qualcomm Incorporated | Apparatus and method for controlling transmission power in a cellular communications system |
US5767744A (en) | 1995-11-22 | 1998-06-16 | Qsc Audio Products, Inc. | Lightweight fixed frequency discontinuous resonant power supply for audio amplifiers |
US6256482B1 (en) | 1997-04-07 | 2001-07-03 | Frederick H. Raab | Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters |
US5905407A (en) | 1997-07-30 | 1999-05-18 | Motorola, Inc. | High efficiency power amplifier using combined linear and switching techniques with novel feedback system |
US5936464A (en) | 1997-11-03 | 1999-08-10 | Motorola, Inc. | Method and apparatus for reducing distortion in a high efficiency power amplifier |
US6141541A (en) | 1997-12-31 | 2000-10-31 | Motorola, Inc. | Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals |
US5898342A (en) | 1998-01-20 | 1999-04-27 | Advanced Micro Devices | Power amplifier arrangement and method for data signal interface |
US6055168A (en) | 1998-03-04 | 2000-04-25 | National Semiconductor Corporation | Capacitor DC-DC converter with PFM and gain hopping |
FR2776144B1 (fr) | 1998-03-13 | 2000-07-13 | Sgs Thomson Microelectronics | Circuit de commutation de signaux analogiques d'amplitudes superieures a la tension d'alimentation |
US6070181A (en) | 1998-03-27 | 2000-05-30 | Chun-Shan Institute Of Science And Technology | Method and circuit for envelope detection using a peel cone approximation |
US6198645B1 (en) | 1998-07-02 | 2001-03-06 | National Semiconductor Corporation | Buck and boost switched capacitor gain stage with optional shared rest state |
US6043610A (en) | 1998-07-16 | 2000-03-28 | Durel Corporation | Battery operated power supply including a low level boost and a high level boost |
US6690652B1 (en) | 1998-10-26 | 2004-02-10 | International Business Machines Corporation | Adaptive power control in wideband CDMA cellular systems (WCDMA) and methods of operation |
JP3144398B2 (ja) | 1998-10-27 | 2001-03-12 | 日本電気株式会社 | 可変遅延回路 |
DE69930453T2 (de) | 1998-10-27 | 2006-09-28 | Murata Manufacturing Co., Ltd., Nagaokakyo | Zusammengestellte Hochfrequenzkomponente und damit ausgerüstetes mobiles Kommunikationsgerät |
SG90712A1 (en) | 1998-12-05 | 2002-08-20 | Inst Of Microelectronics | Power amplifier |
US6043707A (en) | 1999-01-07 | 2000-03-28 | Motorola, Inc. | Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier |
US6377784B2 (en) | 1999-02-09 | 2002-04-23 | Tropian, Inc. | High-efficiency modulation RF amplifier |
US6864668B1 (en) | 1999-02-09 | 2005-03-08 | Tropian, Inc. | High-efficiency amplifier output level and burst control |
US6118343A (en) | 1999-05-10 | 2000-09-12 | Tyco Electronics Logistics Ag | Power Amplifier incorporating single drain switch and single negative voltage generator |
US6701141B2 (en) | 1999-05-18 | 2004-03-02 | Lockheed Martin Corporation | Mixed signal true time delay digital beamformer |
US6621808B1 (en) | 1999-08-13 | 2003-09-16 | International Business Machines Corporation | Adaptive power control based on a rake receiver configuration in wideband CDMA cellular systems (WCDMA) and methods of operation |
FR2798014B1 (fr) | 1999-08-31 | 2002-03-29 | St Microelectronics Sa | Circuit d'alimentation a selecteur de tension |
US6147478A (en) | 1999-09-17 | 2000-11-14 | Texas Instruments Incorporated | Hysteretic regulator and control method having switching frequency independent from output filter |
US6681101B1 (en) | 2000-01-11 | 2004-01-20 | Skyworks Solutions, Inc. | RF transmitter with extended efficient power control range |
US6452366B1 (en) | 2000-02-11 | 2002-09-17 | Champion Microelectronic Corp. | Low power mode and feedback arrangement for a switching power converter |
US6300826B1 (en) | 2000-05-05 | 2001-10-09 | Ericsson Telefon Ab L M | Apparatus and method for efficiently amplifying wideband envelope signals |
TW480415B (en) | 2000-05-17 | 2002-03-21 | Chung Shan Inst Of Science | Demodulation apparatus of square root and method of the same |
JP2002076951A (ja) | 2000-08-25 | 2002-03-15 | Sharp Corp | 送信機用電源回路 |
US6348780B1 (en) | 2000-09-22 | 2002-02-19 | Texas Instruments Incorporated | Frequency control of hysteretic power converter by adjusting hystersis levels |
CN1157880C (zh) | 2000-09-25 | 2004-07-14 | 华为技术有限公司 | 多时隙功率控制方法 |
US6559689B1 (en) | 2000-10-02 | 2003-05-06 | Allegro Microsystems, Inc. | Circuit providing a control voltage to a switch and including a capacitor |
US6975686B1 (en) | 2000-10-31 | 2005-12-13 | Telefonaktiebolaget L.M. Ericsson | IQ modulation systems and methods that use separate phase and amplitude signal paths |
US6583610B2 (en) | 2001-03-12 | 2003-06-24 | Semtech Corporation | Virtual ripple generation in switch-mode power supplies |
US7010276B2 (en) | 2001-04-11 | 2006-03-07 | Tropian, Inc. | Communications signal amplifiers having independent power control and amplitude modulation |
US6819938B2 (en) | 2001-06-26 | 2004-11-16 | Qualcomm Incorporated | System and method for power control calibration and a wireless communication device |
US6707865B2 (en) | 2001-07-16 | 2004-03-16 | Qualcomm Incorporated | Digital voltage gain amplifier for zero IF architecture |
US6731694B2 (en) | 2001-08-07 | 2004-05-04 | Motorola, Inc. | Isolator eliminator for a linear transmitter |
US6781452B2 (en) | 2001-08-29 | 2004-08-24 | Tropian, Inc. | Power supply processing for power amplifiers |
JP2003124821A (ja) | 2001-09-28 | 2003-04-25 | Motorola Inc | 送信電力制御回路 |
JP3932259B2 (ja) | 2001-12-12 | 2007-06-20 | 株式会社ルネサステクノロジ | 高周波電力増幅回路および無線通信用電子部品 |
US6661210B2 (en) | 2002-01-23 | 2003-12-09 | Telfonaktiebolaget L.M. Ericsson | Apparatus and method for DC-to-DC power conversion |
KR100832117B1 (ko) | 2002-02-17 | 2008-05-27 | 삼성전자주식회사 | 고속 순방향 패킷 접속 방식을 사용하는 이동통신 시스템에서 역방향 송신전력 오프셋 정보를 송수신하는 장치 및 방법 |
US7254157B1 (en) | 2002-03-27 | 2007-08-07 | Xilinx, Inc. | Method and apparatus for generating a phase locked spread spectrum clock signal |
US6643148B1 (en) | 2002-04-18 | 2003-11-04 | Alcatel Canada Inc. | Audio band conducted emissions suppression on power feeders |
US7158586B2 (en) | 2002-05-03 | 2007-01-02 | Atheros Communications, Inc. | Systems and methods to provide wideband magnitude and phase imbalance calibration and compensation in quadrature receivers |
US7171435B2 (en) | 2002-05-17 | 2007-01-30 | Texas Instruments Incorporated | Circuits, systems, and methods implementing approximations for logarithm, inverse logarithm, and reciprocal |
US6703080B2 (en) | 2002-05-20 | 2004-03-09 | Eni Technology, Inc. | Method and apparatus for VHF plasma processing with load mismatch reliability and stability |
US7233624B2 (en) | 2002-06-11 | 2007-06-19 | Interdigital Technology Corporation | Method and system for all digital gain control |
US6624712B1 (en) | 2002-06-11 | 2003-09-23 | Motorola, Inc. | Method and apparatus for power modulating to prevent instances of clipping |
US6725021B1 (en) | 2002-06-20 | 2004-04-20 | Motorola, Inc. | Method for tuning an envelope tracking amplification system |
JP2004064937A (ja) | 2002-07-31 | 2004-02-26 | Nec Corp | チャージポンプ型昇圧回路 |
US6728163B2 (en) | 2002-08-23 | 2004-04-27 | Micron Technology, Inc. | Controlling a delay lock loop circuit |
US6744151B2 (en) | 2002-09-13 | 2004-06-01 | Analog Devices, Inc. | Multi-channel power supply selector |
US6958596B1 (en) | 2002-12-20 | 2005-10-25 | Intersil Americas Inc. | Compensation sample and hold for voltage regulator amplifier |
US6801082B2 (en) | 2002-12-31 | 2004-10-05 | Motorola, Inc. | Power amplifier circuit and method using bandlimited signal component estimates |
ATE551773T1 (de) | 2003-02-20 | 2012-04-15 | Sony Ericsson Mobile Comm Ab | Effizienter modulation von hochfrequenzsignalen |
US7193470B2 (en) | 2003-03-04 | 2007-03-20 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling a power amplifier in a mobile communication system |
CN1774860B (zh) | 2003-03-12 | 2010-04-28 | 联发科技股份有限公司 | 无线电频率输出功率控制*** |
CN1768472B (zh) | 2003-04-07 | 2011-06-08 | Nxp股份有限公司 | 数字放大器 |
JP3972856B2 (ja) | 2003-04-16 | 2007-09-05 | 富士電機ホールディングス株式会社 | 電源システム |
US7072626B2 (en) | 2003-04-30 | 2006-07-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Polar modulation transmitter |
US7805115B1 (en) | 2003-06-02 | 2010-09-28 | Analog Devices, Inc. | Variable filter systems and methods for enhanced data rate communication systems |
US7043213B2 (en) | 2003-06-24 | 2006-05-09 | Northrop Grumman Corporation | Multi-mode amplifier system |
US7321912B2 (en) | 2003-06-24 | 2008-01-22 | Texas Instruments Incorporated | Device with dB-to-linear gain conversion |
US7251462B2 (en) | 2003-07-08 | 2007-07-31 | Matsushita Electric Industrial Co., Ltd. | Modulation circuit device, modulation method and radio communication device |
US7043518B2 (en) | 2003-07-31 | 2006-05-09 | Cradle Technologies, Inc. | Method and system for performing parallel integer multiply accumulate operations on packed data |
KR100602065B1 (ko) | 2003-07-31 | 2006-07-14 | 엘지전자 주식회사 | 전원장치와 그의 구동방법 및 이를 이용한 일렉트로루미네센스 표시소자의 구동장치 및 구동방법 |
US20050032499A1 (en) | 2003-08-08 | 2005-02-10 | Cho Jin Wook | Radio frequency power detecting circuit and method therefor |
KR100524985B1 (ko) | 2003-08-26 | 2005-10-31 | 삼성전자주식회사 | 효율이 높은 부스팅 회로, 이를 구비하여 부하량에 따라자동적으로 부스팅을 결정하는 부스팅 파워 장치 및 그파워 부스팅 제어 방법 |
US7058373B2 (en) | 2003-09-16 | 2006-06-06 | Nokia Corporation | Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
US6903608B2 (en) | 2003-10-30 | 2005-06-07 | Sige Semiconductor Inc. | Power level controlling of first amplification stage for an integrated RF power amplifier |
US7627622B2 (en) | 2003-11-14 | 2009-12-01 | International Business Machines Corporation | System and method of curve fitting |
US7026868B2 (en) | 2003-11-20 | 2006-04-11 | Northrop Grumman Corporation | Variable supply amplifier system |
US6995995B2 (en) | 2003-12-03 | 2006-02-07 | Fairchild Semiconductor Corporation | Digital loop for regulating DC/DC converter with segmented switching |
JP2005175561A (ja) | 2003-12-08 | 2005-06-30 | Renesas Technology Corp | 高周波電力増幅回路用電源回路および電源用半導体集積回路並びに電源用電子部品 |
US7330501B2 (en) | 2004-01-15 | 2008-02-12 | Broadcom Corporation | Orthogonal normalization for a radio frequency integrated circuit |
US7915954B2 (en) | 2004-01-16 | 2011-03-29 | Qualcomm, Incorporated | Amplifier predistortion and autocalibration method and apparatus |
US6958594B2 (en) | 2004-01-21 | 2005-10-25 | Analog Devices, Inc. | Switched noise filter circuit for a DC-DC converter |
WO2005076467A1 (ja) | 2004-02-06 | 2005-08-18 | Mitsubishi Denki Kabushiki Kaisha | 電力増幅装置、通信端末装置及び電力増幅装置の制御方法 |
WO2005079430A2 (en) | 2004-02-17 | 2005-09-01 | Agere Systems, Inc. | Versatile and intelligent power controller |
ES2265122T3 (es) | 2004-02-20 | 2007-02-01 | Research In Motion Limited | Metodo y aparato para mejorar la eficiencia de amplificacion de potencia en sistemas de comunicacion inalambrica con elevadas relaciones entre los valores de potencia de pico y de potencia media. |
US7408979B2 (en) | 2004-06-28 | 2008-08-05 | Broadcom Corporation | Integrated radio circuit having multiple function I/O modules |
US7358806B2 (en) | 2004-07-08 | 2008-04-15 | Amalfi Semiconductor, Inc. | Method and apparatus for an improved power amplifier |
US7253589B1 (en) | 2004-07-09 | 2007-08-07 | National Semiconductor Corporation | Dual-source CMOS battery charger |
US7529523B1 (en) | 2004-08-23 | 2009-05-05 | Rf Micro Devices, Inc. | N-th order curve fit for power calibration in a mobile terminal |
GB0418944D0 (en) | 2004-08-25 | 2004-09-29 | Siemens Ag | Method for envelope clipping |
JP4574471B2 (ja) | 2004-09-17 | 2010-11-04 | 株式会社日立国際電気 | 歪補償直交変調器及び無線送信機 |
US7378828B2 (en) | 2004-11-09 | 2008-05-27 | The Boeing Company | DC-DC converter having magnetic feedback |
US7394233B1 (en) | 2004-12-02 | 2008-07-01 | Nortel Networks Limited | High efficiency modulated power supply |
US7539466B2 (en) | 2004-12-14 | 2009-05-26 | Motorola, Inc. | Amplifier with varying supply voltage and input attenuation based upon supply voltage |
WO2006085139A2 (en) | 2004-12-22 | 2006-08-17 | Nokia Corporation | Interoperability improvement between receivers and transmitters in a mobile station |
US20080187073A1 (en) | 2004-12-27 | 2008-08-07 | Koninklijke Philips Electronics N.V. | Transmitter Apparatus |
WO2006073208A1 (en) | 2005-01-06 | 2006-07-13 | Matsushita Electric Industrial Co., Ltd. | Polar modulator and wireless communication apparatus using the same |
TWI281305B (en) | 2005-02-03 | 2007-05-11 | Richtek Techohnology Corp | Dual input voltage converter and its control method |
US7400865B2 (en) | 2005-02-09 | 2008-07-15 | Nokia Corporation | Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method |
US20060181340A1 (en) | 2005-02-17 | 2006-08-17 | Zywyn Corporation | Regulating charge pump |
US20060199553A1 (en) | 2005-03-07 | 2006-09-07 | Andrew Corporation | Integrated transceiver with envelope tracking |
KR100588334B1 (ko) | 2005-03-29 | 2006-06-09 | 삼성전자주식회사 | 슈도 슈미트 트리거 회로를 이용한 디시-디시 컨버터 및펄스 폭 변조방법 |
KR20080003902A (ko) | 2005-04-20 | 2008-01-08 | 엔엑스피 비 브이 | 전력 공급 시스템 및 그것을 포함하는 장치 |
US7773691B2 (en) | 2005-04-25 | 2010-08-10 | Rf Micro Devices, Inc. | Power control system for a continuous time mobile transmitter |
TWI293828B (en) | 2005-04-28 | 2008-02-21 | Novatek Microelectronics Corp | Charge pump |
US7279875B2 (en) | 2005-06-16 | 2007-10-09 | Ge Gan | High switching frequency DC-DC converter with fast response time |
DE102005030123B4 (de) | 2005-06-28 | 2017-08-31 | Austriamicrosystems Ag | Stromversorgungsanordnung und deren Verwendung |
US7283406B2 (en) | 2005-07-11 | 2007-10-16 | Taiwan Semiconductor Manufacturing Co., Ltd. | High voltage wordline driver with a three stage level shifter |
US20070014382A1 (en) | 2005-07-15 | 2007-01-18 | Nokia Corporation | Reconfigurable transmitter |
US7602155B2 (en) | 2005-07-27 | 2009-10-13 | Artesyn Technologies, Inc. | Power supply providing ultrafast modulation of output voltage |
DE602006020734D1 (de) | 2005-07-27 | 2011-04-28 | Nxp Bv | Rf-sender mit kompensation der differentiellen pfadverzögerung |
US7233130B1 (en) | 2005-08-05 | 2007-06-19 | Rf Micro Devices, Inc. | Active ripple reduction switched mode power supplies |
US20070063681A1 (en) | 2005-09-16 | 2007-03-22 | Amazion Electronics, Inc. | Direct mode pulse width modulation for DC to DC converters |
US7615979B2 (en) | 2005-11-28 | 2009-11-10 | David J. Caldwell | Flexible power converter and simplified process controller |
JP5003134B2 (ja) | 2006-01-10 | 2012-08-15 | 日本電気株式会社 | 増幅装置 |
US7512395B2 (en) | 2006-01-31 | 2009-03-31 | International Business Machines Corporation | Receiver and integrated AM-FM/IQ demodulators for gigabit-rate data detection |
JP2007209103A (ja) | 2006-02-01 | 2007-08-16 | Ricoh Co Ltd | 電流モード制御dc−dcコンバータ |
US7522676B2 (en) | 2006-02-06 | 2009-04-21 | Nokia Corporation | Method and system for transmitter envelope delay calibration |
TWI309102B (en) | 2006-03-02 | 2009-04-21 | Himax Tech Inc | A voltage switch apparatus |
US8648579B2 (en) | 2006-03-17 | 2014-02-11 | St-Ericsson Sa | Supply circuit with ripple compensation |
US7826810B2 (en) | 2006-05-08 | 2010-11-02 | Harris Corporation | Multiband radio with transmitter output power optimization |
WO2007149346A2 (en) | 2006-06-16 | 2007-12-27 | Pulsewave Rf, Inc. | Radio frequency power amplifier and method using a controlled supply |
JP2008035487A (ja) | 2006-06-19 | 2008-02-14 | Renesas Technology Corp | Rf電力増幅器 |
FI20065457A0 (fi) | 2006-06-30 | 2006-06-30 | Nokia Corp | Tehovahvistimen kytkentätoimisen tehonsyötön kontrollointi |
GB2446843B (en) | 2006-06-30 | 2011-09-07 | Wolfson Microelectronics Plc | Amplifier circuit and methods of operation thereof |
US8311243B2 (en) | 2006-08-21 | 2012-11-13 | Cirrus Logic, Inc. | Energy-efficient consumer device audio power output stage |
US8068622B2 (en) | 2006-12-13 | 2011-11-29 | Cirrus Logic, Inc. | Method and apparatus for controlling a selectable voltage audio power output stage |
US7646108B2 (en) | 2006-09-29 | 2010-01-12 | Intel Corporation | Multiple output voltage regulator |
US7729670B2 (en) | 2006-09-29 | 2010-06-01 | Broadcom Corporation | Method and system for minimizing power consumption in a communication system |
US7454238B2 (en) | 2006-10-30 | 2008-11-18 | Quantance, Inc. | Power combining power supply system |
KR100794310B1 (ko) | 2006-11-21 | 2008-01-11 | 삼성전자주식회사 | 스위치드 커패시터 회로 및 그것의 증폭 방법 |
US7777470B2 (en) | 2006-12-06 | 2010-08-17 | Texas Instruments Incorporated | System and method for controlling a hysteretic mode converter |
CN101558556A (zh) | 2006-12-12 | 2009-10-14 | 皇家飞利浦电子股份有限公司 | 高效率调制rf放大器 |
GB2444984B (en) | 2006-12-22 | 2011-07-13 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof |
US7777459B2 (en) | 2006-12-30 | 2010-08-17 | Advanced Analogic Technologies, Inc. | High-efficiency DC/DC voltage converter including capacitive switching pre-converter and down inductive switching post-regulator |
US7675365B2 (en) | 2007-01-10 | 2010-03-09 | Samsung Electro-Mechanics | Systems and methods for power amplifiers with voltage boosting multi-primary transformers |
WO2008090721A1 (ja) | 2007-01-24 | 2008-07-31 | Nec Corporation | 電力増幅器 |
US7679433B1 (en) | 2007-02-02 | 2010-03-16 | National Semiconductor Corporation | Circuit and method for RF power amplifier power regulation and modulation envelope tracking |
EP1962413A1 (en) | 2007-02-22 | 2008-08-27 | Stmicroelectronics SA | Ripple compensator and switching converter comprising such a ripple compensator |
US7859336B2 (en) | 2007-03-13 | 2010-12-28 | Astec International Limited | Power supply providing ultrafast modulation of output voltage |
KR101309293B1 (ko) | 2007-03-28 | 2013-09-16 | 페어차일드코리아반도체 주식회사 | 스위칭 모드 파워 서플라이 및 그 구동 방법 |
US7791324B2 (en) | 2007-03-30 | 2010-09-07 | Intersil Americas Inc. | Switching regulator without a dedicated input current sense element |
US7696735B2 (en) | 2007-03-30 | 2010-04-13 | Intel Corporation | Switched capacitor converters |
US8274332B2 (en) | 2007-04-23 | 2012-09-25 | Dali Systems Co. Ltd. | N-way Doherty distributed power amplifier with power tracking |
US7554473B2 (en) | 2007-05-02 | 2009-06-30 | Cirrus Logic, Inc. | Control system using a nonlinear delta-sigma modulator with nonlinear process modeling |
US7466195B2 (en) | 2007-05-18 | 2008-12-16 | Quantance, Inc. | Error driven RF power amplifier control with increased efficiency |
US20090004981A1 (en) | 2007-06-27 | 2009-01-01 | Texas Instruments Incorporated | High efficiency digital transmitter incorporating switching power supply and linear power amplifier |
GB0715254D0 (en) | 2007-08-03 | 2007-09-12 | Wolfson Ltd | Amplifier circuit |
US7609114B2 (en) | 2007-09-04 | 2009-10-27 | Upi Semiconductor Corporation | Voltage generating apparatus and methods |
US7783269B2 (en) | 2007-09-20 | 2010-08-24 | Quantance, Inc. | Power amplifier controller with polar transmitter |
KR20090036670A (ko) | 2007-10-10 | 2009-04-15 | 삼성전자주식회사 | 무선통신 시스템에서 포락선 트래킹 전력증폭 송신장치 및방법 |
JP5189343B2 (ja) | 2007-10-23 | 2013-04-24 | ローム株式会社 | セレクタ回路およびそれを用いた電子機器 |
WO2009060652A1 (ja) | 2007-11-05 | 2009-05-14 | Nec Corporation | 電力増幅器およびこれを備える電波送信機 |
JP4905344B2 (ja) | 2007-12-20 | 2012-03-28 | 富士通株式会社 | 電力増幅装置 |
US7923974B2 (en) | 2008-01-04 | 2011-04-12 | Chil Semiconductor Corporation | Modification of switch activation order in a power supply |
US7782036B1 (en) | 2008-01-07 | 2010-08-24 | National Semiconductor Corporation | Adaptive on-time control for switching regulators |
TWI349410B (en) | 2008-01-08 | 2011-09-21 | Novatek Microelectronics Corp | Change pump circuit |
US8718582B2 (en) | 2008-02-08 | 2014-05-06 | Qualcomm Incorporated | Multi-mode power amplifiers |
JP5119961B2 (ja) | 2008-02-08 | 2013-01-16 | 住友電気工業株式会社 | 包絡線追跡電源回路及びそれを含む高周波増幅器 |
US7898268B2 (en) | 2008-02-15 | 2011-03-01 | Infineon Technologies Ag | Circuit and method for capacitor effective series resistance measurement |
WO2009104420A1 (ja) | 2008-02-21 | 2009-08-27 | 株式会社アドバンテスト | デジタル変調信号の試験装置ならびにデジタル変調器、デジタル復調器、これらを用いた半導体装置 |
KR101434604B1 (ko) | 2008-03-03 | 2014-08-26 | 삼성전자주식회사 | 제로 전류 스위칭을 이용한 바이어스 모듈레이터 장치 및 방법 |
US7928705B2 (en) | 2008-03-12 | 2011-04-19 | Sony Ericsson Mobile Communications Ab | Switched mode voltage converter with low-current mode and methods of performing voltage conversion with low-current mode |
GB2459894A (en) | 2008-05-09 | 2009-11-11 | Nujira Ltd | Switched supply stage with feedback |
US7759912B2 (en) | 2008-05-13 | 2010-07-20 | Micrel, Inc. | Adaptive compensation scheme for LC circuits in feedback loops |
US7915961B1 (en) | 2008-05-13 | 2011-03-29 | National Semiconductor Corporation | Power amplifier multiple stage control for polar modulation circuit |
US7808323B2 (en) | 2008-05-23 | 2010-10-05 | Panasonic Corporation | High-efficiency envelope tracking systems and methods for radio frequency power amplifiers |
US8369973B2 (en) | 2008-06-19 | 2013-02-05 | Texas Instruments Incorporated | Efficient asynchronous sample rate conversion |
JP4613986B2 (ja) | 2008-07-28 | 2011-01-19 | 日本テキサス・インスツルメンツ株式会社 | スイッチング電源装置 |
US7990119B2 (en) | 2008-07-29 | 2011-08-02 | Telefonaktiebolaget L M Ericsson (Publ) | Multimode voltage regulator circuit |
US20100027301A1 (en) | 2008-07-31 | 2010-02-04 | Motorola, Inc. | Band-pass current mode control scheme for switching power converters with higher-order output filters |
US8000117B2 (en) | 2008-08-13 | 2011-08-16 | Intersil Americas Inc. | Buck boost function based on a capacitor bootstrap input buck converter |
FI20085808A0 (fi) | 2008-08-29 | 2008-08-29 | Nokia Corp | Vääristymien korjaaminen tehovahvistimen ulostulossa |
US20110018626A1 (en) | 2008-10-24 | 2011-01-27 | Advantest Corporation | Quadrature amplitude demodulator and demodulation method |
GB2465552B (en) | 2008-11-18 | 2015-12-09 | Nujira Ltd | Power supply arrangement for multi-stage amplifier |
EP2189870A1 (en) | 2008-11-25 | 2010-05-26 | St Microelectronics S.A. | A switch-mode voltage regulator |
TW201043049A (en) | 2008-12-15 | 2010-12-01 | Mediatek Inc | DC-coupled audio out unit |
US8030995B2 (en) | 2008-12-25 | 2011-10-04 | Hitachi Kokusai Electric Inc. | Power circuit used for an amplifier |
JP5472119B2 (ja) | 2008-12-25 | 2014-04-16 | 日本電気株式会社 | 電力増幅装置 |
ATE528852T1 (de) | 2009-01-30 | 2011-10-15 | Alcatel Lucent | Getakteter linearverstärker für basisbandsignalverstärkung |
EP2395655A4 (en) | 2009-02-05 | 2014-07-23 | Nec Corp | POWER AMPLIFIERS AND POWER AMPLIFICATION PROCESS |
US8138734B2 (en) | 2009-04-06 | 2012-03-20 | Monolithic Power Systems, Inc. | Accurate current limit for peak current mode DC-DC converter |
US8026765B2 (en) | 2009-04-12 | 2011-09-27 | Roberto Michele Giovannotto | Audio frequency amplifier |
US8093951B1 (en) | 2009-04-14 | 2012-01-10 | Cirrus Logic, Inc. | Pulse-width modulated (PWM) audio power amplifier having output signal magnitude controlled pulse voltage and switching frequency |
US8749213B2 (en) | 2009-06-09 | 2014-06-10 | Silergy Technology | Mixed mode control for switching regulator with fast transient responses |
US8081199B2 (en) | 2009-06-26 | 2011-12-20 | Panasonic Corporation | Light emitting element drive apparatus, planar illumination apparatus, and liquid crystal display apparatus |
GB0912745D0 (en) | 2009-07-22 | 2009-08-26 | Wolfson Microelectronics Plc | Improvements relating to DC-DC converters |
KR20110026065A (ko) | 2009-09-07 | 2011-03-15 | 삼성전자주식회사 | 무선통신 시스템에서 전력 제어를 지원하는 포락선 추적 전력 증폭기를 위한 장치 및 방법 |
JP5343786B2 (ja) | 2009-09-18 | 2013-11-13 | ヤマハ株式会社 | 増幅装置 |
US8421425B1 (en) | 2009-10-05 | 2013-04-16 | Adaptive Digital Power, Inc. | Non-positive inductor current detector for step down switching regulators |
TWI418139B (zh) | 2009-10-09 | 2013-12-01 | Richtek Technology Corp | 高效率g類放大器及其控制方法 |
US8823343B2 (en) | 2009-12-22 | 2014-09-02 | Yamaha Corporation | Power amplifying circuit, DC-DC converter, peak holding circuit, and output voltage control circuit including the peak holding circuit |
US8548398B2 (en) | 2010-02-01 | 2013-10-01 | Rf Micro Devices, Inc. | Envelope power supply calibration of a multi-mode radio frequency power amplifier |
US8183929B2 (en) | 2010-04-09 | 2012-05-22 | Viasat, Inc. | Multi-chip doherty amplifier with integrated power detection |
US8981848B2 (en) | 2010-04-19 | 2015-03-17 | Rf Micro Devices, Inc. | Programmable delay circuitry |
EP2782247B1 (en) | 2010-04-19 | 2018-08-15 | Qorvo US, Inc. | Pseudo-envelope following power management system |
US9099961B2 (en) | 2010-04-19 | 2015-08-04 | Rf Micro Devices, Inc. | Output impedance compensation of a pseudo-envelope follower power management system |
US8706063B2 (en) | 2010-04-20 | 2014-04-22 | Rf Micro Devices, Inc. | PA envelope power supply undershoot compensation |
US8542061B2 (en) | 2010-04-20 | 2013-09-24 | Rf Micro Devices, Inc. | Charge pump based power amplifier envelope power supply and bias power supply |
US8174313B2 (en) | 2010-05-17 | 2012-05-08 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | Apparatus and method for controlling power amplifier |
US8183917B2 (en) | 2010-06-04 | 2012-05-22 | Quantance, Inc. | RF power amplifier circuit with mismatch tolerance |
JP2011259083A (ja) | 2010-06-07 | 2011-12-22 | Renesas Electronics Corp | Rf電力増幅装置およびその動作方法 |
US20110298432A1 (en) | 2010-06-07 | 2011-12-08 | Skyworks Solutions, Inc | Apparatus and method for variable voltage function |
US8164391B2 (en) | 2010-07-28 | 2012-04-24 | Active-Semi, Inc. | Synchronization of multiple high frequency switching power converters in an integrated circuit |
KR101101691B1 (ko) | 2010-07-28 | 2011-12-30 | 한국과학기술원 | 전력 증폭기 |
WO2012027039A1 (en) | 2010-08-25 | 2012-03-01 | Rf Micro Devices, Inc. | Multi-mode/multi-band power management system |
US8204456B2 (en) | 2010-09-15 | 2012-06-19 | Fujitsu Semiconductor Limited | Systems and methods for spurious emission cancellation |
GB2484475A (en) | 2010-10-11 | 2012-04-18 | Toshiba Res Europ Ltd | A power supply modulator for an RF amplifier, using a current-output class G amplifier |
WO2012066659A1 (ja) | 2010-11-17 | 2012-05-24 | 株式会社日立製作所 | 高周波増幅器及びそれを用いた高周波モジュール並びに無線機 |
JP5742186B2 (ja) * | 2010-11-22 | 2015-07-01 | 富士通株式会社 | 増幅装置 |
US8674620B2 (en) | 2010-11-30 | 2014-03-18 | Infineon Technologies Ag | Multi channel LED driver |
TWI419448B (zh) | 2010-12-02 | 2013-12-11 | Richtek Technology Corp | 適應性調整輸入之電源供應電路與電源供應方法 |
WO2012083256A2 (en) | 2010-12-17 | 2012-06-21 | Skyworks Solutions, Inc. | Apparatus and methods for oscillation suppression |
JP5614273B2 (ja) | 2010-12-21 | 2014-10-29 | 富士通株式会社 | 増幅装置 |
US8773102B2 (en) | 2011-01-03 | 2014-07-08 | Eta Semiconductor Inc. | Hysteretic CL power converter |
US8588713B2 (en) | 2011-01-10 | 2013-11-19 | Rf Micro Devices, Inc. | Power management system for multi-carriers transmitter |
US8803605B2 (en) | 2011-02-01 | 2014-08-12 | Mediatek Singapore Pte. Ltd. | Integrated circuit, wireless communication unit and method for providing a power supply |
US8611402B2 (en) | 2011-02-02 | 2013-12-17 | Rf Micro Devices, Inc. | Fast envelope system calibration |
CN103493368B (zh) | 2011-02-07 | 2017-09-12 | 天工方案公司 | 用于包络跟踪校准的装置和方法 |
US8624760B2 (en) | 2011-02-07 | 2014-01-07 | Rf Micro Devices, Inc. | Apparatuses and methods for rate conversion and fractional delay calculation using a coefficient look up table |
EP2673880B1 (en) | 2011-02-07 | 2017-09-06 | Qorvo US, Inc. | Group delay calibration method for power amplifier envelope tracking |
US8576523B2 (en) | 2011-03-14 | 2013-11-05 | Qualcomm Incorporated | Charge pump electrostatic discharge protection |
US8725218B2 (en) | 2011-03-25 | 2014-05-13 | R2 Semiconductor, Inc. | Multimode operation DC-DC converter |
EP2705604B1 (en) | 2011-05-05 | 2020-04-01 | Qorvo US, Inc. | Power managent system for pseudo-envelope and average power tracking |
US8362837B2 (en) * | 2011-05-23 | 2013-01-29 | Vyycore Ltd. | System and a method for amplifying a signal by multiple non-linear power amplifiers |
US8638165B2 (en) | 2011-06-06 | 2014-01-28 | Qualcomm Incorporated | Switched-capacitor DC blocking amplifier |
IL213624A (en) | 2011-06-16 | 2016-02-29 | David Leonardo Fleischer | A method and system for accelerating power supply in power amplifiers |
US8626091B2 (en) | 2011-07-15 | 2014-01-07 | Rf Micro Devices, Inc. | Envelope tracking with variable compression |
US8618868B2 (en) | 2011-08-17 | 2013-12-31 | Rf Micro Devices, Inc. | Single charge-pump buck-boost for providing independent voltages |
KR101793733B1 (ko) | 2011-10-14 | 2017-11-06 | 삼성전자주식회사 | 송신기에서 전원변조 교정을 위한 장치 및 방법 |
US9298198B2 (en) | 2011-12-28 | 2016-03-29 | Rf Micro Devices, Inc. | Noise reduction for envelope tracking |
US8952753B2 (en) | 2012-02-17 | 2015-02-10 | Quantance, Inc. | Dynamic power supply employing a linear driver and a switching regulator |
US8981839B2 (en) | 2012-06-11 | 2015-03-17 | Rf Micro Devices, Inc. | Power source multiplexer |
US8648657B1 (en) | 2012-08-13 | 2014-02-11 | Broadcom Corporation | Mobile device including a power amplifier with selectable voltage supply |
-
2012
- 2012-11-26 US US13/684,826 patent/US8975959B2/en active Active
- 2012-11-30 CN CN201210596632.XA patent/CN103296977B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1518209A (zh) * | 2003-01-15 | 2004-08-04 | 3 | 一种非相关的自适应前置补偿器 |
US20100327971A1 (en) * | 2009-06-26 | 2010-12-30 | Fujitsu Limited | Transmission device, distortion compensation device, and distortion compensation method |
CN101635697A (zh) * | 2009-08-04 | 2010-01-27 | 京信通信***(中国)有限公司 | 一种发射机及发射机处理信号的方法 |
CN101626355A (zh) * | 2009-08-11 | 2010-01-13 | 北京天碁科技有限公司 | 一种多输入多输出终端的校准装置及校准方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105103440A (zh) * | 2013-02-01 | 2015-11-25 | 追踪有限公司 | 具有反馈的包络追踪调制器 |
CN105103440B (zh) * | 2013-02-01 | 2018-02-13 | 追踪有限公司 | 具有反馈的包络追踪调制器 |
US10079576B2 (en) | 2013-02-01 | 2018-09-18 | Snaptrack, Inc. | Envelope tracking modulator with feedback |
CN105721067A (zh) * | 2014-12-18 | 2016-06-29 | 英特尔Ip公司 | 具有用于包络跟踪的电源负载变化降噪的通信设备及方法 |
CN105721067B (zh) * | 2014-12-18 | 2018-10-19 | 英特尔Ip公司 | 具有用于包络跟踪的电源负载变化降噪的通信设备及方法 |
CN107408922A (zh) * | 2015-02-23 | 2017-11-28 | 诺基亚技术有限公司 | 用于向放大器供应电力的方法和装置 |
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