-
公开(公告)号：US20210281324A1
公开(公告)日：2021-09-09
申请号：US17322156
申请日：2021-05-17
IPC分类号： H04B10/516 , H01Q3/26 , H04B10/2575 , H04B1/16 , H04B10/11 , H04B10/64
摘要： A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal.
-
公开(公告)号：US10536220B2
公开(公告)日：2020-01-14
申请号：US16214998
申请日：2018-12-10
IPC分类号： H04B10/00 , H04B10/516 , H01Q3/26 , H04B10/2575 , H04B1/16 , H04B10/11 , H04B10/64
摘要： A method of RF signal processing comprises receiving an incoming RF signal at each of a plurality of antenna elements that are arranged in a first pattern. The received RF signals from each of the plurality of antenna elements are modulated onto an optical carrier to generate a plurality of modulated signals that each have at least one sideband. The modulated signals are directed along a corresponding plurality of optical channels with outputs arranged in a second pattern corresponding to the first pattern. A composite optical signal is formed using light emanating from the outputs of the plurality of optical channels. Non-spatial information contained in at least one of the received RF signals is extracted from the composite signal.
-
公开(公告)号：US10009098B2
公开(公告)日：2018-06-26
申请号：US15227859
申请日：2016-08-03
CPC分类号： H04B10/11 , H04B7/08 , H04B10/00 , H04B10/60 , H04B2210/006
摘要： An optical imaging system and method that reconstructs RF sources in k-space by utilizing interference amongst modulated optical beams. The system and method involves recording with photodetectors the interference pattern produced by RF-modulated optical beams conveyed by optical fibers having unequal lengths. The photodetectors record the interference, and computational analysis using known tomography reconstruction methods is performed to reconstruct the RF sources in k-space.
-
公开(公告)号：US20170041068A1
公开(公告)日：2017-02-09
申请号：US15227859
申请日：2016-08-03
CPC分类号： H04B10/11 , H04B7/08 , H04B10/00 , H04B10/60 , H04B2210/006
摘要： An optical imaging system and method that reconstructs RF sources in k-space by utilizing interference amongst modulated optical beams. The system and method involves recording with photodetectors the interference pattern produced by RF-modulated optical beams conveyed by optical fibers having unequal lengths. The photodetectors record the interference, and computational analysis using known tomography reconstruction methods is performed to reconstruct the RF sources in k-space.
摘要翻译： 通过利用调制光束之间的干扰重建k空间中的RF源的光学成像系统和方法。 该系统和方法涉及用光电检测器记录由具有不等长度的光纤传送的RF调制光束产生的干涉图案。 光电检测器记录干扰，并且使用已知的断层摄影重建方法进行计算分析以重构k空间中的RF源。
-
公开(公告)号：US20240113784A1
公开(公告)日：2024-04-04
申请号：US18508736
申请日：2023-11-14
IPC分类号： H04B10/2575 , G02B6/12 , G02B6/293 , H04R9/08
CPC分类号： H04B10/2575 , G02B6/12019 , G02B6/29344 , H04R9/08 , H04B2210/006
摘要： An apparatus and method is provided to correlate radiation beams, such as RF beams, optical beams, and/or acoustic beams. A plurality of sensors are distributed according to a first pattern and disposed adjacent to a first interference region. The plurality of sensors may capture incoming radiation and convert the incoming radiation to a plurality of signals. A plurality of radiating elements are distributed according to a second pattern that differs from the first pattern and are disposed adjacent to a second interference region. A plurality of channels are connected between the sensors and the radiating elements, each channel connecting a corresponding sensor to receive a corresponding signal. Each of the radiating elements is in communication with a corresponding one of the plurality of channels to provide an outgoing radiation corresponding to the signal received by the channel. The second pattern has a relationship to the first pattern such that first and second beams of incoming radiation in the first interference region captured by the plurality of sensors are respectively mapped to corresponding first and second beams of outgoing radiation emitted by the plurality of radiating elements into the second interference region.
-
公开(公告)号：US20230420841A1
公开(公告)日：2023-12-28
申请号：US18243479
申请日：2023-09-07
发明人： Garrett Schneider , Christopher Schuetz , Janusz Murakowski , Tom Dillon , Shouyuan Shi , Dennis Prather
CPC分类号： H01Q3/2611 , H01Q3/24
摘要： An RF receiver may include antenna elements to receive RF signals, and electro-optic modulators to generate corresponding upconverted optical signals by mixing an RF signal with an optical carrier beam. The RF receiver may include a transmission array having a first bundle of optical waveguides that receive and transmit upconverted optical signals from their ends. The ends may be arranged in a first pattern. The RF receiver may include an interference space to receive the upconverted optical signals to form a composite beam, and an array of single mode optical fibers that have lenses positioned in a detection plane to receive a portion of the composite beam. The first pattern of the ends generates an RF emitter interference pattern at the detection plane, and the single mode optical fiber lenses have a geometric arrangement that corresponds to the first RF emitter interference pattern.
-
公开(公告)号：US11838050B2
公开(公告)日：2023-12-05
申请号：US17151565
申请日：2021-01-18
IPC分类号： H04B10/2575 , H04B10/69 , H04B10/00
CPC分类号： H04B10/2575 , H04B10/00 , H04B10/69 , H04B2210/006
摘要： An optical imaging system and method that reconstructs RF sources in k-space by utilizing interference amongst modulated optical beams. In some examples, the system and method may record the interference pattern produced by RF-modulated optical beams conveyed by optical fibers having unequal lengths. The photodetectors record the interference, and computational analysis using known tomography reconstruction methods is performed to reconstruct the RF sources in k-space.
-
公开(公告)号：US11784406B2
公开(公告)日：2023-10-10
申请号：US17523552
申请日：2021-11-10
发明人： Garrett Schneider , Christopher Schuetz , Janusz Murakowski , Tom Dillon , Shouyuan Shi , Dennis Prather
摘要： An RF receiver may include antenna elements to receive RF signals, and electro-optic modulators to generate corresponding upconverted optical signals by mixing an RF signal with an optical carrier beam. The RF receiver may include a transmission array having a first bundle of optical waveguides that receive and transmit upconverted optical signals from their ends. The ends may be arranged in a first pattern. The RF receiver may include an interference space to receive the upconverted optical signals to form a composite beam, and an array of single mode optical fibers that have lenses positioned in a detection plane to receive a portion of the composite beam. The first pattern of the ends generates an RF emitter interference pattern at the detection plane, and the single mode optical fiber lenses have a geometric arrangement that corresponds to the first RF emitter interference pattern.
-
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.
-
公开(公告)号：US20210257729A1
公开(公告)日：2021-08-19
申请号：US17160676
申请日：2021-01-28
摘要： An apparatus and method is provided to correlate radiation beams, such as RF beams, optical beams, and/or acoustic beams. A plurality of sensors are distributed according to a first pattern and disposed adjacent to a first interference region. The plurality of sensors may capture incoming radiation and convert the incoming radiation to a plurality of signals. A plurality of radiating elements are distributed according to a second pattern that differs from the first pattern and are disposed adjacent to a second interference region. A plurality of channels are connected between the sensors and the radiating elements, each channel connecting a corresponding sensor to receive a corresponding signal. Each of the radiating elements is in communication with a corresponding one of the plurality of channels to provide an outgoing radiation corresponding to the signal received by the channel. The second pattern has a relationship to the first pattern such that first and second beams of incoming radiation in the first interference region captured by the plurality of sensors are respectively mapped to corresponding first and second beams of outgoing radiation emitted by the plurality of radiating elements into the second interference region.
-
-
-
-
-
-
-
-
-
搜索结果
49 条记录 (耗时 0.023 秒)
