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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

    Applicant: Aviat U.S., Inc.

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

    IPC: H04L1/20 ,  H04L27/38

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 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 wireless communication using polarization diversity
    4.
    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

    Applicant: Aviat U.S., Inc.

    Inventor： Youming Qin ,  Frank Matsumoto

    IPC: H04W4/00 ,  H04B7/10 ,  H04B7/0413

    CPC classification number: H04B7/10 ,  H04B7/0413

    Abstract: 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
    5.
    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

    Applicant: Aviat U.S., Inc.

    Inventor： Jayesh Nath ,  Ying Shen ,  Frank Matsumoto ,  Youming Qin ,  David C.M. Pham

    IPC: H04B1/04

    CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/345 ,  H03F3/19 ,  H03F3/245 ,  H03F3/60 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/423 ,  H04B2001/0425

    Abstract: 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.

    Abstract translation: 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。

    Microphonics suppression in high-speed communications systems
    6.
    发明授权
    Microphonics suppression in high-speed communications systems 有权
    高速通信系统中的麦克风抑制

    公开(公告)号：US09113554B2

    公开(公告)日：2015-08-18

    申请号：US14158422

    申请日：2014-01-17

    Applicant: Aviat U.S., Inc.

    Inventor： Youming Qin ,  Frank S. Matsumoto ,  Eric Tiongson

    IPC: H05K5/00 ,  H05K5/02 ,  H05K7/14 ,  H05K13/00

    CPC classification number: H05K5/0217 ,  H05K7/142 ,  H05K13/00 ,  Y10T29/49002

    Abstract: One design aspect in electronic systems, such as communication systems, is noise suppression. More particularly, this relates to microphonics suppression in high-speed communication systems, such as microwave wireless radio systems. The present invention contemplates system design for substantially eliminating microphonic behavior created by mechanical stimulus such as vibrations and the drum effect. A preferred approach includes isolating the motherboard from its mounting harnesses (mechanical interconnection) and adding an echo damping and shock absorption pad to the underside of the enclosure cover to stiffen the enclosure cover while maintaining its light weight. Preferably also, this approach isolates the entire motherboard rather than a particular component. A design using this approach is particularly useful in an outdoor unit (ODU) of a split-mount microwave radio system.

    Abstract translation: 诸如通信系统的电子系统中的一个设计方面是噪声抑制。 更具体地说，这涉及在诸如微波无线电系统的高速通信系统中的麦克风抑制。 本发明考虑了用于基本上消除由诸如振动和鼓效应的机械刺激产生的麦克风行为的系统设计。 优选的方法包括将主板与其安装线束（机械互连）隔离，并将回波阻尼和减震垫添加到外壳盖的下侧，以在保持其重量的同时加强外壳盖。 优选地，这种方法隔离整个母板而不是特定的部件。 使用这种方法的设计在分体式微波无线电系统的室外单元（ODU）中特别有用。

    Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment
    7.
    发明授权
    Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 有权

    公开(公告)号：US09042853B2

    公开(公告)日：2015-05-26

    申请号：US14155211

    申请日：2014-01-14

    Applicant: Aviat U.S., Inc.

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

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

    Abstract: 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.

    SYSTEMS AND METHODS FOR BIASING AMPLIFIERS DURING HIGH-POWER OPERATION WITH ADAPTIVE CLOSED-LOOP CONTROL
    8.
    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

    Applicant: AVIAT U.S., INC.

    Inventor： Frank Matsumoto ,  Youming Qin ,  Andres Goytia ,  Cuong Nguyen

    IPC: H03F3/21

    CPC classification number: H03F3/21 ,  H03F1/0272 ,  H03F1/3247 ,  H03F3/19 ,  H03F3/245

    Abstract: 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).

    Abstract translation: 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 asynchronous re-modulation with adaptive I/Q adjustment
    9.
    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：US08630600B1

    公开(公告)日：2014-01-14

    申请号：US13627996

    申请日：2012-09-26

    Applicant: Aviat U.S., Inc.

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

    IPC: H04B17/00

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 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到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。

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