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公开(公告)号：US08823456B2
公开(公告)日：2014-09-02
申请号：US13893867
申请日：2013-05-14
Applicant: Marvell World Trade Ltd.
Inventor： David M. Signoff , Wayne A. Loeb , Ming He
CPC classification number: H03F1/30 , H03F2200/447 , H03F2200/468 , H03G3/3042
Abstract: A system including a power amplifier having a first gain, a preamplifier having a second gain, a first temperature sensor configured to sense the temperature of the power amplifier, and a bias generator. The first gain is a function of a temperature of the power amplifier. The preamplifier receives an input signal, amplifies the input signal according to the second gain, and outputs an amplified signal to the power amplifier. The bias generator generates a biasing signal to bias the preamplifier and adjusts the second gain of the preamplifier by adjusting the biasing signal based on the temperature of the power amplifier and an ambient temperature. The adjusted second gain of the preamplifier compensates a change in the first gain of the power amplifier due to a change in the temperature of the power amplifier.
Abstract translation: 一种包括具有第一增益的功率放大器，具有第二增益的前置放大器，被配置为感测功率放大器的温度的第一温度传感器和偏置发生器的系统。 第一增益是功率放大器的温度的函数。 前置放大器接收输入信号，根据第二增益放大输入信号，并将放大的信号输出到功率放大器。 偏置发生器产生偏置信号以偏置前置放大器并且通过基于功率放大器的温度和环境温度调整偏置信号来调节前置放大器的第二增益。 前置放大器的调整后的第二增益由于功率放大器的温度变化而补偿功率放大器的第一增益的变化。
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Patent Agency Ranking
公开(公告)号：US08957733B2
公开(公告)日：2015-02-17
申请号：US13660755
申请日：2012-10-25
Applicant: Marvell World Trade Ltd.
Inventor： David M. Signoff , Shu-Hsien Liao , Ming He , Wayne A. Loeb
CPC classification number: H03F1/56 , H03F1/0277 , H03F1/22 , H03F3/72
Abstract: In accordance with an embodiment of the disclosure, systems and methods are provided for multi-modal power amplification. In certain implementations, an adjustable power amplifier amplifies an input signal, and the amount of amplification is varied based on the input signal. A variable impedance unit receives an amplified input signal, and the amount of load impedance at the variable impedance unit is varied based on the input signal.
Abstract translation: 根据本公开的实施例，提供了用于多模式功率放大的系统和方法。 在某些实施方案中，可调功率放大器放大输入信号，并且放大量基于输入信号而变化。 可变阻抗单元接收放大的输入信号，并且可变阻抗单元处的负载阻抗量基于输入信号而变化。
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公开(公告)号：US09417641B2
公开(公告)日：2016-08-16
申请号：US14532816
申请日：2014-11-04
Applicant: Marvell World Trade, Ltd.
Inventor： David M. Signoff , Ming He , Wayne A. Loeb
CPC classification number: H03F3/245 , G05F1/46 , H03F1/301 , H03F1/308 , H03F3/195 , H03F3/265 , H03F3/505 , H03F2200/24 , H03F2200/451 , H03F2200/453 , H03F2200/534 , H03F2200/555 , H03F2200/69 , H03H7/0107
Abstract: A circuit includes a bias circuit for a biased transistor. The bias circuit includes a master-slave source follower circuit, a reference transistor, and a bias circuit voltage output coupled to the biased transistor and configured to provide a bias voltage. The reference transistor has a transconductance substantially identical to a transconductance of the biased transistor. A signal ground circuit may be coupled between the biased transistor and one or more components of the bias circuit that do not generate significant return currents to a power supply ground. A method includes generating a current in a reference transistor according to a first voltage generated using a master source follower circuit, generating a second voltage substantially identical to the first voltage using a slave source follower circuit, and providing the second voltage to a biased transistor. The reference transistor has a transconductance substantially identical to a transconductance of the biased transistor.
Abstract translation: 电路包括用于偏置晶体管的偏置电路。 偏置电路包括主从源极跟随器电路，参考晶体管和耦合到偏置晶体管并被配置为提供偏置电压的偏置电路电压输出。 参考晶体管具有与偏置晶体管的跨导基本相同的跨导。 信号接地电路可以耦合在偏置晶体管和偏置电路的一个或多个组件之间，其不产生对电源接地的大的返回电流。 一种方法包括根据使用主源跟随器电路产生的第一电压在参考晶体管中产生电流，使用从源跟随器电路产生与第一电压基本相同的第二电压，以及将第二电压提供给偏置晶体管。 参考晶体管具有与偏置晶体管的跨导基本相同的跨导。
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公开(公告)号：US20130249636A1
公开(公告)日：2013-09-26
申请号：US13893867
申请日：2013-05-14
Applicant: Marvell World Trade Ltd.
Inventor： David M. Signoff , Wayne A. Loeb , Ming He
IPC: H03F1/30
CPC classification number: H03F1/30 , H03F2200/447 , H03F2200/468 , H03G3/3042
Abstract: A system including a power amplifier having a first gain, a preamplifier having a second gain, a first temperature sensor configured to sense the temperature of the power amplifier, and a bias generator. The first gain is a function of a temperature of the power amplifier. The preamplifier receives an input signal, amplifies the input signal according to the second gain, and outputs an amplified signal to the power amplifier. The bias generator generates a biasing signal to bias the preamplifier and adjusts the second gain of the preamplifier by adjusting the biasing signal based on the temperature of the power amplifier and an ambient temperature. The adjusted second gain of the preamplifier compensates a change in the first gain of the power amplifier due to a change in the temperature of the power amplifier.
Abstract translation: 一种包括具有第一增益的功率放大器，具有第二增益的前置放大器，被配置为感测功率放大器的温度的第一温度传感器和偏置发生器的系统。 第一增益是功率放大器的温度的函数。 前置放大器接收输入信号，根据第二增益放大输入信号，并将放大的信号输出到功率放大器。 偏置发生器产生偏置信号以偏置前置放大器并且通过基于功率放大器的温度和环境温度调整偏置信号来调节前置放大器的第二增益。 前置放大器的调整后的第二增益由于功率放大器的温度变化而补偿功率放大器的第一增益的变化。
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公开(公告)号：US09705454B2
公开(公告)日：2017-07-11
申请号：US15207362
申请日：2016-07-11
Applicant: Marvell World Trade, Ltd.
Inventor： David M. Signoff , Ming He , Wayne A. Loeb
CPC classification number: H03F3/245 , G05F1/46 , H03F1/301 , H03F1/308 , H03F3/195 , H03F3/265 , H03F3/505 , H03F2200/24 , H03F2200/451 , H03F2200/453 , H03F2200/534 , H03F2200/555 , H03F2200/69 , H03H7/0107
Abstract: A circuit includes a bias circuit for a biased transistor. The bias circuit includes a master-slave source follower circuit, a reference transistor, and a bias circuit voltage output coupled to the biased transistor and configured to provide a bias voltage. The reference transistor has a transconductance substantially identical to a transconductance of the biased transistor. A signal ground circuit may be coupled between the biased transistor and one or more components of the bias circuit that do not generate significant return currents to a power supply ground. A method includes generating a current in a reference transistor according to a first voltage generated using a master source follower circuit, generating a second voltage substantially identical to the first voltage using a slave source follower circuit, and providing the second voltage to a biased transistor. The reference transistor has a transconductance substantially identical to a transconductance of the biased transistor.
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公开(公告)号：US20130106507A1
公开(公告)日：2013-05-02
申请号：US13660755
申请日：2012-10-25
Applicant: MARVELL WORLD TRADE LTD.
Inventor： David M. Signoff , Shu-Hsien Liao , Ming He , Wayne A. Loeb
CPC classification number: H03F1/56 , H03F1/0277 , H03F1/22 , H03F3/72
Abstract: In accordance with an embodiment of the disclosure, systems and methods are provided for multi-modal power amplification. In certain implementations, an adjustable power amplifier amplifies an input signal, and the amount of amplification is varied based on the input signal. A variable impedance unit receives an amplified input signal, and the amount of load impedance at the variable impedance unit is varied based on the input signal.
Abstract translation: 根据本公开的实施例，提供了用于多模式功率放大的系统和方法。 在某些实施方案中，可调功率放大器放大输入信号，并且放大量基于输入信号而变化。 可变阻抗单元接收放大的输入信号，并且可变阻抗单元处的负载阻抗量基于输入信号而变化。
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