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公开(公告)号：US20170264246A1
公开(公告)日：2017-09-14
申请号：US15270375
申请日：2016-09-20
Inventor： Yong Hoon LEE , Eui Rim JEONG , Sang II LEE , Soon II HONG , Soon Chan PARK , Kwang Pyo LEE , Jong Ok HA
CPC classification number: H03F1/0216 , H03F1/0227 , H03F1/3247 , H03F3/20 , H03F3/245 , H03F2200/102 , H03F2200/324 , H03F2200/435 , H03F2200/516 , H03F2201/3224
Abstract: An apparatus includes a first predistorter configured to calculate a first predistortion parameter and configured to distort an input signal using the first predistortion parameter to output a first distortion signal, a second predistorter configured to calculate a second predistortion parameter and configured to distort the first distortion signal using the second predistortion parameter to output a second distortion signal, a power supply configured to receive the first distortion signal to generate a first envelope signal, and configured to limit a bandwidth of the first envelope signal to obtain a second envelope signal to supply a source voltage, and a power amplifier configured to receive the source voltage and to output an output signal obtained by amplifying the second distortion signal.
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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
Applicant: Stryker Combo L.L.C.
Inventor： Regis J. Nero, Jr. , Jeffrey A. Gibala
CPC classification number: H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
Abstract: 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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公开(公告)号：US09584085B2
公开(公告)日：2017-02-28
申请号：US14554542
申请日：2014-11-26
Applicant: RF Micro Devices, Inc.
Inventor： Baker Scott , George Maxim , Dirk Robert Walter Leipold
IPC: H03G3/30 , H03F3/68 , H03F3/19 , H03F1/32 , H03F1/52 , H03F1/02 , H04B1/04 , H03F1/22 , H03F1/56 , H03F3/45 , H03F3/193
CPC classification number: H03G3/3036 , H03F1/0211 , H03F1/0272 , H03F1/223 , H03F1/32 , H03F1/523 , H03F1/565 , H03F3/19 , H03F3/193 , H03F3/24 , H03F3/45179 , H03F3/45394 , H03F3/68 , H03F2200/324 , H03F2200/387 , H03F2200/451 , H03F2200/471 , H03F2201/3236 , H03G3/3042 , H04B1/0475 , H04B2001/0408 , H04B2001/0416 , H04B2001/0425
Abstract: An amplifying system with increased linearity is disclosed. The amplifying system includes a first gain stage with a first gain characteristic, a second gain stage with a second gain characteristic, and bias circuitry configured to substantially maintain alignment of distortion inflection points between the first gain characteristic and the second gain characteristic during operation. The bias circuitry is configured to further maintain alignment of the distortion inflection points between the first gain characteristic and the second gain characteristic over design corners by providing substantially constant headroom between quiescent bias voltage and turnoff of the first gain stage and the second gain stage. In some embodiments the first gain characteristic is expansive and the second gain characteristic is compressive. In other embodiments the first gain characteristic is compressive and the second gain characteristic is expansive. In some embodiments the first gain stage is configured to provide RF degeneration control of gain.
Abstract translation: 公开了具有增加的线性度的放大系统。 放大系统包括具有第一增益特性的第一增益级，具有第二增益特性的第二增益级，以及被配置为在操作期间基本保持第一增益特性与第二增益特性之间的失真拐点对准的偏置电路。 偏置电路被配置为通过在静态偏置电压和第一增益级与第二增益级的截止之间提供基本恒定的余量，进一步保持在设计角上的第一增益特性和第二增益特性之间的失真拐点的对准。 在一些实施例中，第一增益特性是膨胀的，第二增益特性是压缩的。 在其他实施例中，第一增益特性是压缩的，第二增益特性是膨胀的。 在一些实施例中，第一增益级被配置为提供增益的RF退化控制。
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公开(公告)号：US09444409B2
公开(公告)日：2016-09-13
申请号：US14873882
申请日：2015-10-02
Applicant: FUJITSU LIMITED
Inventor： Alexander Nikolaevich Lozhkin
CPC classification number: H03F1/0294 , H03F1/32 , H03F3/217 , H03F3/24 , H03F2200/321 , H03F2200/324 , H03F2200/331
Abstract: An amplification device includes at least two amplifiers. The amplification device further includes: a switching unit that switches an amplification mode to one of a first amplification mode and a second amplification mode based on power of a signal before or after amplification by the amplifiers; a separating unit that separates an input signal to two signals having a constant amplitude and different phases from each other when switched to the first amplification mode by the switching unit; a modulation unit that modulates an input signal into a signal having a constant amplitude when switched to the second amplification mode by the switching unit; an amplification unit that amplifies the two signals obtained by the separating unit or two signals obtained by the modulation unit by using the amplifiers; and a combining unit that combines the two signals amplified by the amplifiers.
Abstract translation: 放大装置包括至少两个放大器。 放大装置还包括：开关单元，其基于由放大器放大之前或之后的信号的功率将放大模式切换到第一放大模式和第二放大模式之一; 分离单元，其通过所述切换单元切换到所述第一放大模式时，将输入信号彼此分离成具有恒定幅度和相位不同的两个信号; 调制单元，其通过切换单元切换到第二放大模式时将输入信号调制为具有恒定幅度的信号; 放大单元，其通过使用放大器放大由分离单元获得的两个信号或由调制单元获得的两个信号; 以及组合由放大器放大的两个信号的组合单元。
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公开(公告)号：US09331636B2
公开(公告)日：2016-05-03
申请号：US14117989
申请日：2012-05-16
Applicant: Ben Bartram
Inventor： Ben Bartram
CPC classification number: H03F1/0233 , G01R21/00 , H03F1/0222 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/105 , H03F2200/228 , H03F2200/324 , H03F2200/451
Abstract: The invention relates to a method of calibrating an envelope path and an input path of an amplification stage including an envelope tracking power supply, the method comprising: generating input signals having a known relationship for each of the input and envelope paths; and varying an amplitude and a delay of the signal in one of the envelope and input paths in order to reduce the variation in the power detected in a signal at the output of the amplification stage.
Abstract translation: 本发明涉及一种校准包络线路和包括跟踪电源的放大级的输入路径的方法，该方法包括：产生每个输入和包络路径具有已知关系的输入信号; 并且改变包络线和输入路径之一中的信号的幅度和延迟，以便减小在放大级的输出处的信号中检测到的功率的变化。
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6.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
Applicant: Stryker Combo L.L.C.
Inventor： Regis J Nero, JR. , Jeffrey A Gibala
CPC classification number: H03F1/0227 , H02M2001/0045 , H03C1/02 , H03F1/02 , H03F3/19 , H03F3/217 , H03F3/2176 , H03F3/245 , H03F2200/324 , H03F2200/451
Abstract: 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.
Abstract translation: 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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公开(公告)号：US20150155843A1
公开(公告)日：2015-06-04
申请号：US14554542
申请日：2014-11-26
Applicant: RF Micro Devices, Inc.
Inventor： Baker Scott , George Maxim , Dirk Robert Walter Leipold
CPC classification number: H03G3/3036 , H03F1/0211 , H03F1/0272 , H03F1/223 , H03F1/32 , H03F1/523 , H03F1/565 , H03F3/19 , H03F3/193 , H03F3/24 , H03F3/45179 , H03F3/45394 , H03F3/68 , H03F2200/324 , H03F2200/387 , H03F2200/451 , H03F2200/471 , H03F2201/3236 , H03G3/3042 , H04B1/0475 , H04B2001/0408 , H04B2001/0416 , H04B2001/0425
Abstract: An amplifying system with increased linearity is disclosed. The amplifying system includes a first gain stage with a first gain characteristic, a second gain stage with a second gain characteristic, and bias circuitry configured to substantially maintain alignment of distortion inflection points between the first gain characteristic and the second gain characteristic during operation. The bias circuitry is configured to further maintain alignment of the distortion inflection points between the first gain characteristic and the second gain characteristic over design corners by providing substantially constant headroom between quiescent bias voltage and turnoff of the first gain stage and the second gain stage. In some embodiments the first gain characteristic is expansive and the second gain characteristic is compressive. In other embodiments the first gain characteristic is compressive and the second gain characteristic is expansive. In some embodiments the first gain stage is configured to provide RF degeneration control of gain.
Abstract translation: 公开了具有增加的线性度的放大系统。 放大系统包括具有第一增益特性的第一增益级，具有第二增益特性的第二增益级，以及被配置为在操作期间基本保持第一增益特性与第二增益特性之间的失真拐点对准的偏置电路。 偏置电路被配置为通过在静态偏置电压和第一增益级与第二增益级的截止之间提供基本恒定的余量，进一步保持在设计角上的第一增益特性和第二增益特性之间的失真拐点的对准。 在一些实施例中，第一增益特性是膨胀的，第二增益特性是压缩的。 在其他实施例中，第一增益特性是压缩的，第二增益特性是膨胀的。 在一些实施例中，第一增益级被配置为提供增益的RF退化控制。
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8.发明申请
公开(公告)号：US20140248846A1
公开(公告)日：2014-09-04
申请号：US13982433
申请日：2012-01-30
Applicant: Masayo Horie
Inventor： Wasuke Yanagisawa , Hirotoshi Mizuno , Ryo Horie
IPC: H03G3/30
CPC classification number: H03G3/3042 , H03F3/193 , H03F3/211 , H03F2200/18 , H03F2200/324 , H03F2200/333 , H03F2200/399 , H03F2200/432 , H04B1/18
Abstract: Provided is a terrestrial broadcast wave reception-use antenna device having performance that is equivalent to or better than that of a conventional device in frequency bands at or below an FM band even if an antenna element length is shortened to approximately 55 [mm]. An amplifier (12-A) is configured so as to include a compound semiconductor HEMT for amplifying a received wave having a frequency at or below a resonant point of an antenna element (10) among received waves of the antenna element (10), the compound semiconductor HEMT having an equivalent noise resistance of 2[Ω] or smaller for the received frequency so that a noise figure (NF) is approximately constant over a wide frequency band at or below the FM band.
Abstract translation: 提供了即使天线元件长度缩短到大约55 [mm]，其性能也等于或优于FM频带中或以下频带中的常规设备的性能的地面广播波接收用天线装置。 放大器（12-A）被配置为包括化合物半导体HEMT，用于放大在天线元件（10）的接收波中具有在天线元件（10）的谐振点之下或之下的频率的接收波， 化合物半导体HEMT的接收频率的等效噪声电阻为2 [＆OHgr]以下，使得噪声系数（NF）在FM频带以下的宽频带处近似恒定。
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公开(公告)号：US08774740B2
公开(公告)日：2014-07-08
申请号：US13922043
申请日：2013-06-19
Applicant: Broadcom Corporation
Inventor： Ahmadreza Rofougaran
CPC classification number: H03F3/45179 , H03F1/0205 , H03F1/0211 , H03F3/245 , H03F2200/102 , H03F2200/321 , H03F2200/324 , H03F2203/45466 , H04B1/0475 , H04B1/0483
Abstract: Aspects of a system for improving efficiency over power control for linear and class AB power amplifiers may include a current source circuit that enables determination of a bias current level for a PA circuit within an IC die based on an amplitude of an input modulation signal. The PA circuit may enable generation of an output signal based on a differential input signal and the input modulation signal to the current source circuit. A generated bias voltage may be applied to a transformer external to the IC die, but internal to an IC package containing the IC die and/or a circuit board containing the IC package. One or more amplifier bias voltage levels may be applied to the PA circuit wherein the amplifier bias voltage levels may be derived from the generated bias voltage level and/or the determined bias current level.
Abstract translation: 用于提高线性和AB类功率放大器的功率控制效率的系统的方面可以包括电流源电路，其能够基于输入调制信号的幅度来确定IC管芯内的PA电路的偏置电流电平。 PA电路可以基于差分输入信号和到电流源电路的输入调制信号来产生输出信号。 产生的偏置电压可以被施加到IC芯片外部的变压器，但是内部包含IC芯片的IC封装和/或包含IC封装的电路板。 可以将一个或多个放大器偏置电压电平施加到PA电路，其中放大器偏置电压电平可以从产生的偏置电压电平和/或所确定的偏置电流电平导出。
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公开(公告)号：US08577312B2
公开(公告)日：2013-11-05
申请号：US13231833
申请日：2011-09-13
Applicant: Rahul Magoon , Scott D. Kee , Seyed-Ali Hajimiri , Ichiro Aoki , Roberto Aparicio Joo , Morten Damgaard , Setu Mohta , Geoff Hatcher
Inventor： Rahul Magoon , Scott D. Kee , Seyed-Ali Hajimiri , Ichiro Aoki , Roberto Aparicio Joo , Morten Damgaard , Setu Mohta , Geoff Hatcher
IPC: H04B1/40
CPC classification number: H03F1/02 , G01R19/04 , H03F1/32 , H03F1/52 , H03F3/19 , H03F2200/102 , H03F2200/324 , H03F2200/378 , H03F2200/393 , H03F2200/451 , H03F2200/453 , H03F2200/456 , H03F2200/462 , H03F2200/471 , H03F2200/541 , H03F2200/99 , H03G3/3047
Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.
