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公开(公告)号：US20150333780A1
公开(公告)日：2015-11-19
申请号：US14704393
申请日：2015-05-05
Applicant: Futurewei Technologies, Inc.
Inventor： Leonard Piazzi , Zhengxiang Ma
CPC classification number: H04B1/0475 , H03F1/0294 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/336 , H04B1/40 , H04B2001/0416 , H04L25/08
Abstract: System and method embodiments are provided for null filling of IQ waveform. In an embodiment method, samples below a predetermined threshold are selected from a plurality of samples of an input signal. Amplitude values of a complex null-fill function are then calculated to push amplitudes of the samples below the predetermined threshold to a signal level at the predetermined threshold. The phase values of the complex null-fill function are calculated to push the samples of the input signal in an IQ plane in a defined direction from a point closest to a zero signal value. The resulting complex null-fill function is filtered within a predetermined bandwidth of the input signal, and then added to the input signal to provide a modified input signal for amplification.
Abstract translation: 提供系统和方法实施例用于零填充IQ波形。 在一个实施方式中，从输入信号的多个采样中选出低于预定阈值的采样。 然后计算复零填充函数的幅度值，以将低于预定阈值的样本的幅度推到预定阈值的信号电平。 计算复杂零填充函数的相位值，以便从最接近零信号值的点在指定方向上将IQ平面中的输入信号的样本推送到定义的方向。 所得到的复零填充函数在输入信号的预定带宽内被滤波，然后被加到输入信号上以提供修改的输入信号用于放大。
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12.发明授权Methods and systems for beam steering crest factor reduction (CFR) clip noise 有权波束转向波峰因数降低（CFR）剪辑噪声的方法和系统公开(公告)号：US08995570B2
公开(公告)日：2015-03-31
申请号：US13797408
申请日：2013-03-12
Applicant: FutureWei Technologies, Inc.
Inventor： Leonard Piazzi , Zhengxiang Ma
CPC classification number: H04B1/10 , H04B7/0465 , H04L27/2623
Abstract: Signal-to-noise ratios (SNRs) and/or amplifier performance can be improved in crest factor reduction (CFR) applications by steering clipping noise in a different direction than the data signal achieving upon reception. Indeed, using clipping noise signals that have a different amplitude-phase relationship than the input/baseline signal causes the clipping noise signal and data signal to exhibit different antenna patterns, effectively steering the clipping noise in a different direction than the data signal. For instance, clipping noise can be steered away from potential receivers to improve received signal quality. In addition, higher magnitude clipping noise can be used to achieve improved power amplifier performance without increasing received SNR.
Abstract translation: 通过在与接收时实现的数据信号不同的方向上引导削波噪声，可以在波峰因数降低（CFR）应用中提高信噪比（SNR）和/或放大器性能。 实际上，使用与输入/基线信号不同的幅度相位关系的削波噪声信号会导致削波噪声信号和数据信号呈现不同的天线方向图，有效地在与数据信号不同的方向上引导限幅噪声。 例如，削波噪声可以被引导离开潜在的接收机，以改善接收的信号质量。 此外，可以使用更高幅度的限幅噪声来实现改进的功率放大器性能而不增加接收的SNR。
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公开(公告)号：US20190158159A1
公开(公告)日：2019-05-23
申请号：US16251276
申请日：2019-01-18
Applicant: Futurewei Technologies, Inc.
Inventor： Leonard Piazzi , Renjian Zhao , Zhengxiang Ma , Stefan Feuchtinger
IPC: H04B7/0456 , H04B7/10 , H04B7/06 , H01Q25/00 , H01Q21/24 , H04B7/0452 , H01Q3/26 , H01Q1/24
Abstract: Using High-beam and low-beam transmission signals that have different antenna tilts, different beam-widths, and different polarizations than one another may provide performance advantages in wireless networks. The high-beam transmission signal and the low-beam transmission signal may have orthogonal polarizations. For example, the high-beam transmission signal and the low-beam transmission signal may be linearly polarized signals having different electromagnetic field (E-field) polarization angles with respect to the y-axis, e.g., +/−forty-five degrees with respect to a vertically polarized wave. As another example, the high-beam transmission signal may be a vertically polarized signal, and the low-beam transmission signal may be a horizontally polarized signal, or vice-versa. In addition to having orthogonal polarizations, the low-beam transmission signal may have a greater antenna beam down-tilt angle, and a wider beam-width than the high-beam transmission signal.
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公开(公告)号：US09584166B2
公开(公告)日：2017-02-28
申请号：US14704393
申请日：2015-05-05
Applicant: Futurewei Technologies, Inc.
Inventor： Leonard Piazzi , Zhengxiang Ma
CPC classification number: H04B1/0475 , H03F1/0294 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/336 , H04B1/40 , H04B2001/0416 , H04L25/08
Abstract: System and method embodiments are provided for null filling of IQ waveform. In an embodiment method, samples below a predetermined threshold are selected from a plurality of samples of an input signal. Amplitude values of a complex null-fill function are then calculated to push amplitudes of the samples below the predetermined threshold to a signal level at the predetermined threshold. The phase values of the complex null-fill function are calculated to push the samples of the input signal in an IQ plane in a defined direction from a point closest to a zero signal value. The resulting complex null-fill function is filtered within a predetermined bandwidth of the input signal, and then added to the input signal to provide a modified input signal for amplification.
Abstract translation: 提供系统和方法实施例用于零填充IQ波形。 在一个实施方式中，从输入信号的多个采样中选出低于预定阈值的采样。 然后计算复零填充函数的幅度值，以将低于预定阈值的样本的幅度推到预定阈值的信号电平。 计算复杂零填充函数的相位值，以便从最接近零信号值的点在指定方向上将IQ平面中的输入信号的样本推送到定义的方向。 所得到的复零填充函数在输入信号的预定带宽内被滤波，然后被加到输入信号上以提供修改的输入信号用于放大。
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公开(公告)号：US09553642B2
公开(公告)日：2017-01-24
申请号：US14609251
申请日：2015-01-29
Applicant: Futurewei Technologies, Inc.
Inventor： Zhengxiang Ma , Leonard Piazzi , Renjian Zhao , Jian Wang
CPC classification number: H04B7/0469 , H01Q1/246 , H01Q25/001 , H03F1/02 , H03F3/24 , H04B1/04 , H04B7/0456 , H04B7/0617 , H04B7/10 , H04B2001/045 , H04L5/14
Abstract: Embodiments are provided for cross-polarized antennas design with different down tilt angles that support versatile functionality, such as for MIMO or beamforming. An embodiment antenna circuit comprises a baseband signal processor, a pair of RF transmitters coupled to the baseband signal processor, a pair of PAs coupled to the RF transmitters, a 90°/180° hybrid coupler coupled to the RF transmitters, a pair of duplexers and two antennas coupled to the PAs. The two antennas are down tilted at different down tilt angles. A pair of signals is generated using the baseband signal processor, transmitted by the RF transmitters, and amplified using the PAs. Additionally, a 90° or 180° phase difference is introduced into the signals using the 90°/180° hybrid coupler. After the amplifying and introducing the phase difference, the signals are polarized at two different polarizations and down tilted at different down tilt angles using the two antennas.
Abstract translation: 为具有不同下倾角的交叉极化天线设计提供实施例，其支持多功能功能，例如用于MIMO或波束形成。 实施例天线电路包括基带信号处理器，耦合到基带信号处理器的一对RF发射器，耦合到RF发射器的一对PA，耦合到RF发射器的90°/ 180°混合耦合器，一对双工器 和耦合到PA的两个天线。 两个天线在不同的向下倾斜角度下倾斜。 使用由RF发射机发送的基带信号处理器生成一对信号，并使用PA进行放大。 另外，使用90°/ 180°混合耦合器将90°或180°的相位差引入信号。 在放大和引入相位差之后，信号以两个不同的极化极化，并使用两个天线以不同的向下倾斜角向下倾斜。
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Patent Agency Ranking
16.发明授权Apparatus and method for an active antenna system with near-field radio frequency probes 有权一种具有近场射频探头的有源天线系统的装置和方法公开(公告)号：US09130271B2
公开(公告)日：2015-09-08
申请号：US13775002
申请日：2013-02-22
Applicant: FutureWei Technologies, Inc.
Inventor： Zhengxiang Ma , Leonard Piazzi , Alexis Pierides
CPC classification number: H01Q3/267 , G01S7/023 , G01S7/2813 , G01S7/40 , G01S7/4008 , G01S7/4017 , G01S7/4021 , H01Q1/246 , H01Q19/106 , H01Q23/00
Abstract: Field-serviceable radio frequency modules can be achieved by replacing hard-wired radio frequency (RF) feedback paths with external near-field RF probes. Notably, the near-field RF probes may allow for the RF module to be installed/re-installed on a backplane or other support structure without fowling factory calibration settings. Multiple near-field RF probes can monitor a single RF module. Additionally, a single near-field RF probe can monitor multiple RF modules.
Abstract translation: 可以通过用外部近场RF探针替换硬连线射频（RF）反馈路径来实现现场可用的射频模块。 值得注意的是，近场RF探头可以允许RF模块安装/重新安装在背板或其他支撑结构上，而不会影响出厂校准设置。 多个近场RF探头可以监控单个RF模块。 另外，单个近场RF探头可以监视多个RF模块。
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17.发明申请METHODS AND SYSTEMS FOR BEAM STEERING CREST FACTOR REDUCTION (CFR) CLIP NOISE 有权光束转向系数（CFR）CLIP NOISE的方法和系统公开(公告)号：US20140270016A1
公开(公告)日：2014-09-18
申请号：US13797408
申请日：2013-03-12
Applicant: FutureWei Technologies, Inc.
Inventor： Leonard Piazzi , Zhengxiang Ma
IPC: H04B1/10
CPC classification number: H04B1/10 , H04B7/0465 , H04L27/2623
Abstract: Signal-to-noise ratios (SNRs) and/or amplifier performance can be improved in crest factor reduction (CFR) applications by steering clipping noise in a different direction than the data signal achieving upon reception. Indeed, using clipping noise signals that have a different amplitude-phase relationship than the input/baseline signal causes the clipping noise signal and data signal to exhibit different antenna patterns, effectively steering the clipping noise in a different direction than the data signal. For instance, clipping noise can be steered away from potential receivers to improve received signal quality. In addition, higher magnitude clipping noise can be used to achieve improved power amplifier performance without increasing received SNR.
Abstract translation: 通过在与接收时实现的数据信号不同的方向上引导削波噪声，可以在波峰因数降低（CFR）应用中改善信噪比（SNR）和/或放大器性能。 实际上，使用与输入/基线信号不同的幅度相位关系的削波噪声信号会导致削波噪声信号和数据信号呈现不同的天线方向图，有效地在与数据信号不同的方向上引导限幅噪声。 例如，削波噪声可以被引导离开潜在的接收机，以改善接收的信号质量。 此外，可以使用更高幅度的限幅噪声来实现改进的功率放大器性能而不增加接收的SNR。
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18.发明申请Apparatus and Method for an Active Antenna System with Near-field Radio Frequency Probes 有权具有近场射频探头的有源天线系统的装置和方法公开(公告)号：US20130234883A1
公开(公告)日：2013-09-12
申请号：US13775002
申请日：2013-02-22
Applicant: FUTUREWEI TECHNOLOGIES, INC.
Inventor： Zhengxiang Ma , Leonard Piazzi , Alexis Pierides
IPC: H01Q3/26
CPC classification number: H01Q3/267 , G01S7/023 , G01S7/2813 , G01S7/40 , G01S7/4008 , G01S7/4017 , G01S7/4021 , H01Q1/246 , H01Q19/106 , H01Q23/00
Abstract: Field-serviceable radio frequency modules can be achieved by replacing hard-wired radio frequency (RF) feedback paths with external near-field RF probes. Notably, the near-field RF probes may allow for the RF module to be installed/re-installed on a backplane or other support structure without fowling factory calibration settings. Multiple near-field RF probes can monitor a single RF module. Additionally, a single near-field RF probe can monitor multiple RF modules.
Abstract translation: 可以通过用外部近场RF探针替换硬连线射频（RF）反馈路径来实现现场可用的射频模块。 值得注意的是，近场RF探头可以允许RF模块安装/重新安装在背板或其他支撑结构上，而不会影响出厂校准设置。 多个近场RF探头可以监控单个RF模块。 另外，单个近场RF探头可以监视多个RF模块。
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公开(公告)号：US20220181790A1
公开(公告)日：2022-06-09
申请号：US17677261
申请日：2022-02-22
Applicant: Futurewei Technologies, Inc. , Novaa Ltd.
Inventor： Markus Novak , Ahmed Hassan Abdelaziz Abdelrahman , Zhengxiang Ma , Munawar Kermalli , Leonard Piazzi
Abstract: A modular wideband antenna includes a ground plane, first and second antenna elements disposed on a first surface of a substrate, a first portion of a two-layer feed balun disposed on the first surface of the substrate, and electrically coupled to the first and second antenna elements, and to the ground plane, a second portion of the two-layer feed balun disposed on a second surface of the substrate, the second portion of the two-layer feed balun being electrically coupled to a signal feed, and being capacitively coupled to the first portion of the two-layer feed balun, first and second coupling capacitances disposed on the second surface of the substrate, the first coupling capacitance being capacitively coupled to the first antenna element, and the second coupling capacitance being capacitively coupled to the second antenna element, and first and second grounding posts being electrically coupled to the first and second coupling capacitances.
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公开(公告)号：US10567052B2
公开(公告)日：2020-02-18
申请号：US16251276
申请日：2019-01-18
Applicant: Futurewei Technologies, Inc.
Inventor： Leonard Piazzi , Renjian Zhao , Zhengxiang Ma , Stefan Feuchtinger
IPC: H04B7/0456 , H04B7/0452 , H01Q1/24 , H01Q3/26 , H01Q21/24 , H01Q25/00 , H04B7/10 , H04B7/06 , H01Q3/04 , H04W88/08
Abstract: Using High-beam and low-beam transmission signals that have different antenna tilts, different beam-widths, and different polarizations than one another may provide performance advantages in wireless networks. The high-beam transmission signal and the low-beam transmission signal may have orthogonal polarizations. For example, the high-beam transmission signal and the low-beam transmission signal may be linearly polarized signals having different electromagnetic field (E-field) polarization angles with respect to the y-axis, e.g., +/−forty-five degrees with respect to a vertically polarized wave. As another example, the high-beam transmission signal may be a vertically polarized signal, and the low-beam transmission signal may be a horizontally polarized signal, or vice-versa. In addition to having orthogonal polarizations, the low-beam transmission signal may have a greater antenna beam down-tilt angle, and a wider beam-width than the high-beam transmission signal.
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