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公开(公告)号：US09154085B2
公开(公告)日：2015-10-06
申请号：US14314906
申请日：2014-06-25
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin
CPC分类号： H03F1/3247 , H03F1/56 , H03F3/211 , H03F3/24 , H03F2200/204 , H03F2200/207 , H03F2200/387 , H03F2200/405 , H03F2200/408 , H03F2200/411 , H03F2201/3227
摘要： An exemplary system comprises a linearizer, a power amplifier, and a feedback block. The linearizer may be configured to use a predistortion control signal to add predistortion to a receive signal to generate a predistorted signal. The power amplifier may be configured to amplify power of the predistorted signal to generate a first amplified signal. The power amplifier may also add high side and low side amplifier distortion to the predistorted signal. The high side and low side amplifier distortion may cancel at least a portion of the predistortion. The feedback block may be configured to capture a feedback signal based on a previous amplified signal from the power amplifier, to determine high side and low side distortion of the captured feedback signal, and to generate the predistortion control signal based on the determined high side and low side distortion.
摘要翻译： 示例性系统包括线性化器，功率放大器和反馈块。 线性化器可以被配置为使用预失真控制信号来将预失真添加到接收信号以产生预失真信号。 功率放大器可以被配置为放大预失真信号的功率以产生第一放大信号。 功率放大器还可以向预失真信号增加高侧和低侧放大器失真。 高侧和低侧放大器失真可能会取消预失真的至少一部分。 反馈块可以被配置为基于来自功率放大器的先前放大的信号捕获反馈信号，以确定所捕获的反馈信号的高侧和低侧失真，以及基于所确定的高侧产生预失真控制信号，以及 低端失真。
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2.发明授权Systems and methods for biasing amplifiers during high-power operation with adaptive closed-loop control 有权在大功率运行期间利用自适应闭环控制来偏置放大器的系统和方法公开(公告)号：US09059666B2
公开(公告)日：2015-06-16
申请号：US14184282
申请日：2014-02-19
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin , Andres Goytia , Cuong Nguyen
IPC分类号： H03F3/21
CPC分类号： H03F3/21 , H03F1/0272 , H03F1/3247 , H03F3/19 , H03F3/245
摘要： Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed-loop control of the drain current of the power amplifier to achieve improved performance for the power amplifier. Additionally, for some embodiments, use of the adaptive closed-loop control of the drain current of the power amplifier depends on the power region in which the power amplifier is operating (e.g., depends on the radio frequency power region).
摘要翻译： 本文描述的各种实施例提供用于功率放大器，特别是GaN功率放大器的改进性能的系统和方法。 根据一些实施例，功率放大器（例如，GaN功率放大器）利用功率放大器的漏极电流的自适应闭环控制来实现功率放大器的改进的性能。 此外，对于一些实施例，功率放大器的漏极电流的自适应闭环控制的使用取决于功率放大器正在工作的功率区域（例如，取决于射频功率区域）。
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公开(公告)号：US20130082775A1
公开(公告)日：2013-04-04
申请号：US13633066
申请日：2012-10-01
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin
IPC分类号： H03F1/32
CPC分类号： H03F1/3247 , H03F1/56 , H03F3/211 , H03F3/24 , H03F2200/204 , H03F2200/207 , H03F2200/387 , H03F2200/405 , H03F2200/408 , H03F2200/411 , H03F2201/3227
摘要： An exemplary system comprises a linearizer, a power amplifier, and a feedback block. The linearizer may be configured to use a predistortion control signal to add predistortion to a receive signal to generate a predistorted signal. The power amplifier may be configured to amplify power of the predistorted signal to generate a first amplified signal. The power amplifier may also add high side and low side amplifier distortion to the predistorted signal. The high side and low side amplifier distortion may cancel at least a portion of the predistortion. The feedback block may be configured to capture a feedback signal based on a previous amplified signal from the power amplifier, to determine high side and low side distortion of the captured feedback signal, and to generate the predistortion control signal based on the determined high side and low side distortion.
摘要翻译： 示例性系统包括线性化器，功率放大器和反馈块。 线性化器可以被配置为使用预失真控制信号来将预失真添加到接收信号以产生预失真信号。 功率放大器可以被配置为放大预失真信号的功率以产生第一放大信号。 功率放大器还可以向预失真信号增加高侧和低侧放大器失真。 高侧和低侧放大器失真可能会取消预失真的至少一部分。 反馈块可以被配置为基于来自功率放大器的先前放大的信号捕获反馈信号，以确定所捕获的反馈信号的高侧和低侧失真，以及基于所确定的高侧产生预失真控制信号，以及 低端失真。
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4.发明申请公开(公告)号：US20180191311A1
公开(公告)日：2018-07-05
申请号：US15907218
申请日：2018-02-27
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin , David C.M. Pham , Jayesh Nath , Ying Shen
CPC分类号： H03F1/32 , H03F1/0205 , H03F1/0211 , H03F1/3247 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/129 , H03F2200/207 , H03F2200/451 , H04B1/04 , H04B2001/0425
摘要： An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.
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公开(公告)号：US09660716B2
公开(公告)日：2017-05-23
申请号：US15092424
申请日：2016-04-06
申请人： Aviat U.S., Inc.
发明人： Youming Qin , Frank Matsumoto
IPC分类号： H04W4/00 , H04B7/10 , H04B7/0413
CPC分类号： H04B7/10 , H04B7/0413
摘要： According to various embodiments, systems and methods are provided for improving signal quality and signal reliability over wireless communication using polarization diversity. Some embodiments use polarization diversity on a wireless channel to address and compensate for fading conditions such as non-frequency selective fading (also referred to as power fading, attenuation fading, and flat fading) and frequency selective fading (also referred to as multipath fading and dispersive fading). For example, some embodiments utilize a horizontal signal and a vertical signal on the same wireless channel when wirelessly communicating data between a transmitter and a receiver to address a fading condition.
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6.发明申请Systems and Methods for a Radio Frequency Transmitter with Improved Linearity and Power Out Utilizing Pre-Distortion and a GaN (Gallium Nitride) Power Amplifier Device 有权具有改进的线性度和利用预失真的功率消耗的射频发射器的系统和方法以及GaN（氮化镓）功率放大器装置公开(公告)号：US20150236732A1
公开(公告)日：2015-08-20
申请号：US14704468
申请日：2015-05-05
申请人： Aviat U.S., Inc.
发明人： Jayesh Nath , Ying Shen , Frank Matsumoto , Youming Qin , David C.M. Pham
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241 , H03F1/3247 , H03F1/345 , H03F3/19 , H03F3/245 , H03F3/60 , H03F2200/204 , H03F2200/207 , H03F2200/423 , H04B2001/0425
摘要： Various embodiments provide for systems and methods for increased linear output power of a transmitter. An exemplary wireless communications system for transmitting an input signal comprises a predistorter module, a GaN power amplifier, a coupler, and an antenna. The predistorter module is configured to detect existing distortion by comparing the input signal to a feedback signal and generate a correction signal. The predistorter may adaptively adjust its operation to minimize the existing distortion due to GaN power amplifier nonlinear characteristics. The result is that the GaN power amplifier may send a power signal of improved linearity to the antenna. The coupler is configured to sample the amplified signal from the GaN power amplifier to generate the feedback signal. The antenna is configured to transmit the amplified signal.
摘要翻译： 各种实施例提供了用于增加发射机的线性输出功率的系统和方法。 用于传输输入信号的示例性无线通信系统包括预失真器模块，GaN功率放大器，耦合器和天线。 预失真器模块被配置为通过将输入信号与反馈信号进行比较来检测现有失真并产生校正信号。 预失真器可以自适应地调整其操作，以使由于GaN功率放大器非线性特性导致的现有失真最小化。 结果是GaN功率放大器可以向天线发送具有改进的线性度的功率信号。 耦合器被配置为对来自GaN功率放大器的放大信号进行采样以产生反馈信号。 天线被配置为发送放大的信号。
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7.发明申请SYSTEMS AND METHODS FOR BIASING AMPLIFIERS DURING HIGH-POWER OPERATION WITH ADAPTIVE CLOSED-LOOP CONTROL 有权在具有自适应闭环控制的高功率运行期间偏移放大器的系统和方法公开(公告)号：US20140191808A1
公开(公告)日：2014-07-10
申请号：US14184282
申请日：2014-02-19
申请人： AVIAT U.S., INC.
发明人： Frank Matsumoto , Youming Qin , Andres Goytia , Cuong Nguyen
IPC分类号： H03F3/21
CPC分类号： H03F3/21 , H03F1/0272 , H03F1/3247 , H03F3/19 , H03F3/245
摘要： Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed-loop control of the drain current of the power amplifier to achieve improved performance for the power amplifier. Additionally, for some embodiments, use of the adaptive closed-loop control of the drain current of the power amplifier depends on the power region in which the power amplifier is operating (e.g., depends on the radio frequency power region).
摘要翻译： 本文描述的各种实施例提供用于功率放大器，特别是GaN功率放大器的改进性能的系统和方法。 根据一些实施例，功率放大器（例如，GaN功率放大器）利用功率放大器的漏极电流的自适应闭环控制来实现功率放大器的改进的性能。 此外，对于一些实施例，功率放大器的漏极电流的自适应闭环控制的使用取决于功率放大器正在工作的功率区域（例如，取决于射频功率区域）。
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8.发明授权公开(公告)号：US10476445B2
公开(公告)日：2019-11-12
申请号：US15907218
申请日：2018-02-27
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin , David C. M. Pham , Jayesh Nath , Ying Shen
摘要： An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.
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9.发明授权公开(公告)号：US09906194B2
公开(公告)日：2018-02-27
申请号：US15156832
申请日：2016-05-17
申请人： Aviat U.S., Inc.
发明人： Frank Matsumoto , Youming Qin , David C. M. Pham , Jayesh Nath , Ying Shen
CPC分类号： H03F1/32 , H03F1/0205 , H03F1/0211 , H03F1/3247 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/129 , H03F2200/207 , H03F2200/451 , H04B1/04 , H04B2001/0425
摘要： An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.
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10.发明授权公开(公告)号：US09143098B2
公开(公告)日：2015-09-22
申请号：US14150721
申请日：2014-01-08
申请人： Aviat U.S., Inc.
发明人： Youming Qin , Frank Matsumoto , Andres Goytia , Cuong Nguyen
CPC分类号： H03F3/21 , H03F1/0261 , H03F3/19 , H03F3/245
摘要： Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed loop control of the drain current of the power amplifier to achieve improved performance for the power amplifier.
摘要翻译： 本文描述的各种实施例提供用于功率放大器，特别是GaN功率放大器的改进性能的系统和方法。 根据一些实施例，功率放大器（例如，GaN功率放大器）利用功率放大器的漏极电流的自适应闭环控制来实现功率放大器的改进的性能。
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