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公开(公告)号：US11909424B2
公开(公告)日：2024-02-20
申请号：US17457519
申请日：2021-12-03
发明人： Stefano Galli , Munawar Kermalli , Xiao-Feng Qi , Shouyuan Shi , Dennis Prather , Janusz Murakowski , Garrett Schneider
CPC分类号： H04B1/0064 , H04B10/40 , H04J14/0205 , H04Q11/0071 , H04B2210/006 , H04Q2011/0088
摘要： In certain embodiments, an apparatus includes a switch matrix and frequency band isolation circuitry. The switch matrix is configured to receive, at an input port, an electrical signal, which corresponds to a transmission signal received at antennas of an antenna array. The transmission signal corresponds to a transmission spatial sector of the array. The electrical signal includes first and second signal portions in first and second frequency bands, respectively, the electrical signal having been generated from an optical signal that corresponds to the transmission signal. The switch matrix is configured to direct, via an output port and in accordance with a control signal, the electrical signal to a first of multiple signal conversion paths.
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公开(公告)号：US20220094374A1
公开(公告)日：2022-03-24
申请号：US17457519
申请日：2021-12-03
发明人： Stefano Galli , Munawar Kermalli , Xiao-Feng Qi , Shouyuan Shi , Dennis Prather , Janusz Murakowski , Garrett Schneider
摘要： In certain embodiments, an apparatus includes a switch matrix and frequency band isolation circuitry. The switch matrix is configured to receive, at an input port, an electrical signal, which corresponds to a transmission signal received at antennas of an antenna array. The transmission signal corresponds to a transmission spatial sector of the array. The electrical signal includes first and second signal portions in first and second frequency bands, respectively, the electrical signal having been generated from an optical signal that corresponds to the transmission signal. The switch matrix is configured to direct, via an output port and in accordance with a control signal, the electrical signal to a first of multiple signal conversion paths.
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公开(公告)号：US12051859B2
公开(公告)日：2024-07-30
申请号：US17457528
申请日：2021-12-03
发明人： Stefano Galli , Munawar Kermalli , Xiao-Feng Qi , Shouyuan Shi , Dennis Prather , Janusz Murakowski , Garrett Schneider
CPC分类号： H01Q3/2676 , H04Q11/0005 , H04W16/28 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0058
摘要： In certain embodiments, a system includes an optical switch matrix, an optical lens coupled to the switch matrix, and a wireless transmitter coupled to the lens. The switch matrix is configured to switch first optical signals from input ports to output ports of the switch matrix, and output second optical signals that are based at least partially on the first optical signals. The lens is configured to transform wave formats of the second optical signals based on the output ports over which the second optical signals are received. The transmitter includes an antenna array and circuitry coupled to the array. The circuitry is configured to receive the second optical signals from the lens, convert the second optical signals into beamformed wireless signals in accordance with the transformed formats, and transmit the beamformed wireless signals, which signals have spatial characteristics in accordance with the transformed formats, over the array.
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公开(公告)号：US20220166137A1
公开(公告)日：2022-05-26
申请号：US17457528
申请日：2021-12-03
发明人： Stefano Galli , Munawar Kermalli , Xiao-Feng Qi , Shouyuan Shi , Dennis Prather , Janusz Murakowski , Garrett Schneider
摘要： In certain embodiments, a system includes an optical switch matrix, an optical lens coupled to the switch matrix, and a wireless transmitter coupled to the lens. The switch matrix is configured to switch first optical signals from input ports to output ports of the switch matrix, and output second optical signals that are based at least partially on the first optical signals. The lens is configured to transform wave formats of the second optical signals based on the output ports over which the second optical signals are received. The transmitter includes an antenna array and circuitry coupled to the array. The circuitry is configured to receive the second optical signals from the lens, convert the second optical signals into beamformed wireless signals in accordance with the transformed formats, and transmit the beamformed wireless signals, which signals have spatial characteristics in accordance with the transformed formats, over the array.
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公开(公告)号：US20150333701A1
公开(公告)日：2015-11-19
申请号：US14281522
申请日：2014-05-19
发明人： Munawar Kermalli , Zhengxiang Ma
CPC分类号： H03F3/245 , H01P1/397 , H03F1/02 , H03F1/0294 , H03F3/68 , H03F2200/451 , H03F2201/3212 , H03G1/0005 , H03H7/19 , H03H7/21 , H03H7/40
摘要： Methods and apparatus are provided to improve the efficiency of an outphasing amplifier through modulating the phase angle of a reflected signal in the outphasing amplifier. An outphasing amplifier includes a first amplifier and a second amplifier. A circulator is provided having a first port coupled to an output of the outphasing amplifier, a second port coupled to a load and a third port coupled to a phase shifter. The phase shifter is configured to provide a different phase angle of a reflected signal from the phase shifter to the outphasing amplifier through the circulator.
摘要翻译： 提供了通过调制外相放大器中的反射信号的相位角来提高外相放大器的效率的方法和装置。 外相放大器包括第一放大器和第二放大器。 提供循环器，其具有耦合到外相放大器的输出的第一端口，耦合到负载的第二端口和耦合到移相器的第三端口。 移相器被配置为通过循环器将来自移相器的反射信号的不同相位角提供给外相放大器。
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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
发明人： Markus Novak , Ahmed Hassan Abdelaziz Abdelrahman , Zhengxiang Ma , Munawar Kermalli , Leonard Piazzi
摘要： 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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7.发明申请Apparatus and Method for Asymmetrically Driven Partial Outphasing Power Amplifier 有权非对称驱动部分外相功率放大器的装置和方法公开(公告)号：US20140266464A1
公开(公告)日：2014-09-18
申请号：US14197028
申请日：2014-03-04
发明人： Zhengxiang Ma , Ruikang Yang , Munawar Kermalli
CPC分类号： H03F3/21 , H03F1/0288 , H03F1/0294 , H03F3/211 , H03F3/24 , H03F2200/432
摘要： Apparatus and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. The embodiments include reducing the driving power to two power amplifiers (PAs) of the amplifier circuit in the low input signal power region in an asymmetric manner between the two PAs. An embodiment method includes receiving, at a signal decomposer, an input signal, detecting a power amplitude of the input signal, and determining whether the input signal corresponds to one of a plurality of operation modes according to the detected power amplitude of the input signal and a plurality of power thresholds corresponding to the operation modes. Upon determining that the power amplitude of the input signal corresponds to a first mode from the operation modes, the input signal is decomposed into two component signals including at least one signal that has a reduced and scaled amplitude proportional to the input signal.
摘要翻译： 提供装置和方法实施例用于提高具有非隔离组合器的外相放大器的功率效率。 这些实施例包括以两个PA之间的不对称方式在低输入信号功率区域中降低放大器电路的两个功率放大器（PA）的驱动功率。 一种实施方式包括在信号分解器处接收输入信号，检测输入信号的功率幅度，以及根据检测到的输入信号的功率幅度来确定输入信号是否对应于多种操作模式之一; 对应于操作模式的多个功率阈值。 在确定输入信号的功率幅度对应于来自操作模式的第一模式时，输入信号被分解成包括至少一个具有与输入信号成比例的减小和缩放幅度的信号的两个分量信号。
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公开(公告)号：US11757204B2
公开(公告)日：2023-09-12
申请号：US17677261
申请日：2022-02-22
发明人： Markus Novak , Ahmed Hassan Abdelaziz Abdelrahman , Zhengxiang Ma , Munawar Kermalli , Leonard Piazzi
CPC分类号： H01Q21/0043 , H01Q1/424 , H01Q5/25 , H01Q5/314
摘要： 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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9.发明授权Apparatus and method for a digital transmitter architecture with outphasing power amplifier 有权具有外相功率放大器的数字发射机架构的装置和方法公开(公告)号：US09197465B2
公开(公告)日：2015-11-24
申请号：US14198375
申请日：2014-03-05
发明人： Zhengxiang Ma , Munawar Kermalli
CPC分类号： H04L25/4902 , H03F1/0294 , H03F3/195 , H03F3/217 , H03F3/24 , H03F2200/165 , H03F2200/249 , H03F2200/432 , H04L25/03847
摘要： System and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. Some embodiments include a circuit comprising a signal decomposer configured to receive an input signal, a non-isolating combiner coupled to the signal decomposer and configured to provide an amplified output signal corresponding to the input signal, a first power amplifiers (PA) on a first branch between the signal decomposer and the non-isolating combiner, a second PA on a second branch between the signal decomposer and the non-isolating combiner, and a switch on the second branch between the signal decomposer and the second PA. The switch is configured to disconnect the second PA from the signal decomposer upon determining that the input signal is in a first condition, and further configured to connect the second PA to the signal decomposer upon determining otherwise.
摘要翻译： 提供了系统和方法实施例，用于提高具有非隔离组合器的外相放大器的功率效率。 一些实施例包括电路，其包括被配置为接收输入信号的信号分解器，耦合到信号分解器的非隔离组合器，并且被配置为提供对应于输入信号的放大输出信号，第一功率放大器 信号分解器和非隔离组合器之间的分支，在信号分解器和非隔离组合器之间的第二分支上的第二PA以及信号分解器和第二PA之间的第二分支上的开关。 所述开关被配置为在确定所述输入信号处于第一状态时将所述第二PA与所述信号分解器断开连接，并且还被配置为在另外确定时将所述第二PA连接到所述信号分解器。
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10.发明授权公开(公告)号：US09083294B2
公开(公告)日：2015-07-14
申请号：US14207298
申请日：2014-03-12
发明人： Munawar Kermalli
CPC分类号： H03F3/24 , H03F1/025 , H03F1/0294 , H03F3/211 , H03F3/245 , H03F2200/507 , H03F2200/511
摘要： System and method embodiments are provided for a multilevel outphasing amplifier architecture with a non-isolating or lossless combiner. The multilevel outphasing amplifier with lossless combiner improves power efficiency in comparison to outphasing amplifiers with lossless combiners. The multilevel outphasing amplifier applies different voltage levels to the power amplifiers (PAs) of the circuit according to the input signal power range. Additionally, tunable reactive compensation is applied to the compensation components (capacitor and inductor) of the lossless combiner as a function of the multilevel voltage setting of the PAs. The efficiency at the back-off region is improved by varying the compensation elements of the lossless combiner along with the drain voltage to the PAs as a function of the input signal power or amplitude.
摘要翻译： 为具有非隔离或无损组合器的多电平异相放大器架构提供系统和方法实施例。 与具有无损组合器的外相放大器相比，具有无损组合器的多电平外相放大器提高了功率效率。 多电平旁路放大器根据输入信号功率范围向电路的功率放大器（PA）施加不同的电压电平。 此外，作为PA的多电平电压设置的函数，可调谐无功补偿被应用于无损组合器的补偿组件（电容器和电感器）。 通过将无损组合器的补偿元件以及作为输入信号功率或振幅的函数的漏极电压改变为PA来改善退避区域的效率。
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