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    SYSTEMS AND METHODS FOR ASYNCHRONOUS RE-MODULATION WITH ADAPTIVE I/Q ADJUSTMENT
    2.
    发明申请
    SYSTEMS AND METHODS FOR ASYNCHRONOUS RE-MODULATION WITH ADAPTIVE I/Q ADJUSTMENT 有权
    用于自适应I / Q调整的异步重新调制的系统和方法

    公开(公告)号：US20150215084A1

    公开(公告)日：2015-07-30

    申请号：US14679987

    申请日：2015-04-06

    申请人： Aviat U.S., Inc.

    发明人： Emerick Vann ,  Yen-Fang Chao ,  Youming Qin ,  Roland Matian

    IPC分类号： H04L1/20 ,  H04L27/38

    CPC分类号： H04L1/206 ,  H03C3/406 ,  H03D3/009 ,  H03D7/168 ,  H04B1/0014 ,  H04B1/10 ,  H04B1/16 ,  H04B1/28 ,  H04B1/30 ,  H04L1/0036 ,  H04L1/203 ,  H04L1/208 ,  H04L27/38 ,  H04L27/3854

    摘要： Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.

    摘要翻译： 各种实施例提供了用于使用解调然后再调制将一个调制信号信号转换成另一调制信号的系统和方法。 根据一些实施例，信号接收系统可以包括将第一调制信号解调为同相（“I”）信号和正交（“Q”）信号的I / Q解调器，I / Q信号调节器， 自适应地调整Q信号以增加基于第二调制信号的瞬态信号的信噪比（SNR），以及将I信号和经调整的Q信号调制为第二调制信号的I / Q调制器 信号。 为了增加SNR，可以基于在由I / Q调制器下游的解调器解调期间为瞬态信号确定的计算误差来调整Q信号。

    Systems and methods for adaptive power amplifier linearization
    4.
    发明授权
    Systems and methods for adaptive power amplifier linearization 有权
    自适应功率放大器线性化的系统和方法

    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

    IPC分类号： H03F1/26 ,  H03F3/00 ,  H03F1/32 ,  H03F3/24 ,  H03F1/56 ,  H03F3/21

    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。

    Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment
    5.
    发明授权
    Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 有权
    具有自适应I / Q调整的异步重新调制的系统和方法

    公开(公告)号：US09077425B2

    公开(公告)日：2015-07-07

    申请号：US14155211

    申请日：2014-01-14

    申请人： Aviat U.S., Inc.

    发明人： Emerick Vann ,  Yen-Fang Chao ,  Youming Qin ,  Roland Matian

    IPC分类号： H04B17/00 ,  H04B1/16 ,  H03C3/40 ,  H03D3/00 ,  H03D7/16 ,  H04B1/30 ,  H04L27/38 ,  H04B1/10

    CPC分类号： H04L1/206 ,  H03C3/406 ,  H03D3/009 ,  H03D7/168 ,  H04B1/0014 ,  H04B1/10 ,  H04B1/16 ,  H04B1/28 ,  H04B1/30 ,  H04L1/0036 ,  H04L1/203 ,  H04L1/208 ,  H04L27/38 ,  H04L27/3854

    摘要： Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.

    摘要翻译： 各种实施例提供了用于使用解调然后再调制将一个调制信号信号转换成另一调制信号的系统和方法。 根据一些实施例，信号接收系统可以包括将第一调制信号解调为同相（“I”）信号和正交（“Q”）信号的I / Q解调器，I / Q信号调节器， 自适应地调整Q信号以增加基于第二调制信号的瞬态信号的信噪比（SNR），以及I / Q调制器，其将I信号和经调整的Q信号调制为第二调制信号 信号。 为了增加SNR，可以基于在由I / Q调制器下游的解调器解调期间为瞬态信号确定的计算误差来调整Q信号。

    Systems and methods for biasing amplifiers during high-power operation with adaptive closed-loop control
    6.
    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）。

    Systems and Methods for Adaptive Power Amplifier Linearization
    7.
    发明申请
    Systems and Methods for Adaptive Power Amplifier Linearization 有权
    自适应功率放大器线性化的系统和方法

    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。

    Systems and methods for wireless communication using polarization diversity
    9.
    发明授权
    Systems and methods for wireless communication using polarization diversity 有权

    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.

    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
    10.
    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。