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公开(公告)号：US20240030598A1
公开(公告)日：2024-01-25
申请号：US18224354
申请日：2023-07-20
发明人： Shouyuan Shi , Dennis Prather
IPC分类号： H01Q3/26 , H04B10/2575 , H01Q21/00 , H04B10/00 , H04B10/40
CPC分类号： H01Q3/2676 , H04B10/2575 , H01Q21/0025 , H04B10/00 , H04B10/40 , H04B2210/006
摘要： Disclosed herein is a swappable modular-based radiofrequency (RF) frontend that is reconfigurable to form transmitting (TX) and receiving (RX) phased array systems for diverse applications. Such swappable RF frontend may be used with unique spatial and spectral optical processing of complex RF signals over an ultra-wide frequency band. The swappable RF front end may be used in conjunction with an optically upconverted imaging receiver and/or in conjunction with optically addressed phased array technologies transmitters.
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22.发明授权公开(公告)号：US11799202B2
公开(公告)日：2023-10-24
申请号：US17314640
申请日：2021-05-07
发明人： Janusz Murakowski
IPC分类号： H01Q3/26 , H04B10/548 , H01Q21/00 , H04B10/00
CPC分类号： H01Q3/2676 , H01Q21/0025 , H04B10/00 , H04B10/548 , H04B2210/006
摘要： The subject matter described herein relates to various antenna element configurations, antenna array configurations, their operations including various systems and methods to generate modulated data for transmission by an RF antenna array via an optical processing engine. The subject matter includes optical processing engine structure and methods (e.g., modulating in the optical domain, MIMO and spatial modulation via RF beam formation, coherent transmission of RF signal components, coherent operation of spatially separate RF antenna arrays) that may be implemented with the various RF antenna array structures. In some examples, the system combines the virtues of digital, analog and optical processing to arrive at a solution for scalable, non-blocking, simultaneous transmission to multiple UE-s. Much of the system architecture is independent of the RF carrier frequency, and different frequency bands can be accessed easily and rapidly by tuning the optical source (TOPS). In some examples, multiple communication channels may be transmitted simultaneously to different locations. The transmitter may be formed by an array of optically fed antennas.
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公开(公告)号：US11424594B2
公开(公告)日：2022-08-23
申请号：US17214354
申请日：2021-03-26
发明人： Dennis Prather
摘要： Example embodiments disclose a tunable optical pair source (TOPS) configured to generate first and second output optical beams having respective first and second frequencies that are phase locked with each other. The TOPS may include a first laser, such as a tunable laser, configured to generate a first laser beam, a radio frequency (RF) oscillator configured to transmit an RF reference signal, a beam splitter in optical communication with the first laser, and an electro-optic modulator configured to modulate the second split beam with the RF reference signal to form a modulated beam having a first sideband comb comprising a plurality of harmonics. Additionally, the TOPS may include an optical filter configured to receive the modulated beam and output a filtered optical beam, and a second laser configured to generate a second laser beam at the second frequency, the second laser being configured to receive the filtered optical beam as a seed.
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24.发明授权公开(公告)号：US11152700B2
公开(公告)日：2021-10-19
申请号：US16386196
申请日：2019-04-16
摘要： In the disclosed optically-fed transmitting phased-array architecture, transmitting signals are converted between the electrical domain and the optical domain by using electro-optic (EO) modulators and photodiodes. RF signal(s) generated from a relatively low frequency source modulate an optical carrier signal. This modulated optical signal can be remotely imparted to photodiodes via optical fibers. Desired RF signals may be recovered by photo-mixing at the photodiodes whose wired RF outputs are then transmitted to radiating elements of the antennas. The antenna array may generate a physical RF beam that transmits an RF signal that is focused on one or more selectable locations. Multiple RF beams may be simultaneously generated, each RF beam being capable of being directed to focus on a unique location or set of locations.
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公开(公告)号：US11031690B2
公开(公告)日：2021-06-08
申请号：US16198670
申请日：2018-11-21
发明人： Shouyuan Shi , Dennis Prather
IPC分类号： H01Q3/26 , H04B10/2575 , H01Q21/00 , H04B10/00 , H04B10/40
摘要： Disclosed herein is a swappable modular-based radiofrequency (RF) frontend that is reconfigurable to form transmitting (TX) and receiving (RX) phased array systems for diverse applications. Such swappable RF frontend may be used with unique spatial and spectral optical processing of complex RF signals over an ultra-wide frequency band. The swappable RF front end may be used in conjunction with an optically upconverted imaging receiver and/or in conjunction with optically addressed phased array technologies transmitters.
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26.发明授权公开(公告)号：US11005178B2
公开(公告)日：2021-05-11
申请号：US16198652
申请日：2018-11-21
发明人： Janusz Murakowski
IPC分类号： H01Q3/26 , H04B10/548 , H01Q21/00 , H04B10/00
摘要： The subject matter described herein relates to various antenna element configurations, antenna array configurations, their operations including various systems and methods to generate modulated data for transmission by an RF antenna array via an optical processing engine. The subject matter includes optical processing engine structure and methods (e.g., modulating in the optical domain, MIMO and spatial modulation via RF beam formation, coherent transmission of RF signal components, coherent operation of spatially separate RF antenna arrays) that may be implemented with the various RF antenna array structures. In some examples, the system combines the virtues of digital, analog and optical processing to arrive at a solution for scalable, non-blocking, simultaneous transmission to multiple UE-s. Much of the system architecture is independent of the RF carrier frequency, and different frequency bands can be accessed easily and rapidly by tuning the optical source (TOPS). In some examples, multiple communication channels may be transmitted simultaneously to different locations. The transmitter may be formed by an array of optically fed antennas.
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公开(公告)号：US10313012B2
公开(公告)日：2019-06-04
申请号：US15956545
申请日：2018-04-18
IPC分类号： H04B10/2575 , H04B10/69 , H04B10/00
摘要： A system and method reconstructs RF sources in k-space by utilizing interference between RF signals detected by an array of antennas. The system and method may include detecting an RF interference pattern resulting from interference between RF signals in an RF coupler, where the RF signals are detected by the antennas and provided to the RF coupler by RF waveguides. The RF waveguides may have unequal RF path lengths. K-space information of the RF sources may be reconstructed from the detected RF interference pattern using known tomography reconstruction methods.
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公开(公告)号：US09297702B2
公开(公告)日：2016-03-29
申请号：US13104048
申请日：2011-05-10
摘要： A first image may be obtained using locked (relative) phases. A second image may be obtained using unlocked (e.g., randomized) phases. Data of the second image may be subtracted from data of the first image. The result may then undergo further processing, if desired, e.g., to further enhance the resulting image.
摘要翻译： 可以使用锁定（相对）相位获得第一图像。 可以使用解锁（例如，随机化）相获得第二图像。 可以从第一图像的数据中减去第二图像的数据。 如果需要，结果可以进行进一步处理，例如进一步增强所得图像。
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公开(公告)号：US20150139253A1
公开(公告)日：2015-05-21
申请号：US14083671
申请日：2013-11-19
IPC分类号： H04B10/516
CPC分类号： H04B10/5165 , H04B10/5057 , H04B10/50577
摘要： An optical modulation apparatus for modulating an electromagnetic (e.g., radio frequency (RF)) signal onto an optical carrier signal may use carrier recycling to increase modulation efficiency. Such an arrangement may be implemented, e.g., using a Fabry-Perot topology and/or using a travelling-wave modulator.
摘要翻译： 用于将电磁（例如射频（RF））信号调制到光载波信号上的光调制装置可以使用载波回收来提高调制效率。 这种布置可以例如使用法布里 - 珀罗拓扑结构和/或使用行波调制器来实现。
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30.发明公开公开(公告)号：US20240162622A1
公开(公告)日：2024-05-16
申请号：US18370828
申请日：2023-09-20
发明人： Janusz Murakowski
CPC分类号： H01Q15/08 , H01Q19/062
摘要： Novel RF-Photonic antennas and antenna arrays, receivers, transmitters, transceivers and components thereof, and related methods. RF-photonic receivers and transmitters have advantages in processing information of received RF signals and/or RF signals to be transmitted in the optical realm.
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