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公开(公告)号：US10903918B2
公开(公告)日：2021-01-26
申请号：US15833709
申请日：2017-12-06
Inventor： Tamal Bose , Hao Xin , Michael Marefat , Hamed Asadi , Ahmed Abdelrahman , Min Liang
Abstract: A cognitive HF radio is disclosed having a cognitive engine that optimizes HF transmission parameters on the basis of learned experience with previous transmission under varying transmission and environmental conditions. Additionally, electrically small HF antennas optionally using non-Foster matching elements are disclosed. Furthermore, another electrically small HF antenna and associated impedance matching networks are disclosed, including an impedance matching network using non-Foster matching elements.
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公开(公告)号：US20180159642A1
公开(公告)日：2018-06-07
申请号：US15833709
申请日：2017-12-06
Inventor： Tamal Bose , Hao Xin , Michael Marefat , Hamed Asadi , Ahmed Abdelrahman , Min Liang
IPC: H04B17/309 , H01Q1/36 , H01Q1/48 , H04B1/48 , H01Q9/38
CPC classification number: H04B17/309 , H01Q1/362 , H01Q1/48 , H01Q9/38 , H04B1/48
Abstract: A cognitive HF radio is disclosed having a cognitive engine that optimizes HF transmission parameters on the basis of learned experience with previous transmission under varying transmission and environmental conditions. Additionally, electrically small HF antennas optionally using non-Foster matching elements are disclosed. Furthermore, another electrically small HF antenna and associated impedance matching networks are disclosed, including an impedance matching network using non-Foster matching elements.
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公开(公告)号：US11303036B2
公开(公告)日：2022-04-12
申请号：US16622811
申请日：2018-06-15
IPC: H01Q15/10
Abstract: A hollow light-weight, low-cost, and high-performance 3D Luneburg lens structure using partially-metalized thin film, string, threads, fiber or wire base metamaterial to implement the continuously varying relative permittivity profile, characteristic of Luneburg lens structures, is disclosed. The hollow light-weight lens structure is based on the effective medium approach and may be implemented by a number of means. Further, most of the volume of the lens structure is free-space, thus the weight of the lens is significantly less than conventional 3D Luneburg lens structures of the same dimensions.
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Patent Agency Ranking
公开(公告)号：US11340342B2
公开(公告)日：2022-05-24
申请号：US16325111
申请日：2017-08-15
Inventor： Hao Xin , Min Liang , Siyang Cao
IPC: G01S13/42 , G01S13/931 , G05D1/02 , B33Y80/00
Abstract: A high performance, low-cost automotive radar is designed by mounting receivers around a 3D printed Luneburg lens. With this configuration, the antenna radiation pattern is maintained for all angles, (which means no beam deformation). Further, the present radar is capable of performing detection at all azimuth and elevation angles with high angle resolution and broadband operation. The radar adaptively adjusts its spatial sensing pattern, sweeping frequency band, pulse repetition frequency and coherent processing interval according to the environment. This is accomplished by initially performing a rough scan, which updates sensing results via a narrow bandwidth waveform and wide beam scanning. When interested objects are identified, a high-resolution detailed scan is performed in a specific region of interest. In this way, a much more effective detection can be obtained. Moreover, a method of mitigating interference of the 3D printed Luneburg lens based radar and a method of improving the angle resolution using a lens based MIMO approach is disclosed.
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5.发明申请公开(公告)号：US20170254750A1
公开(公告)日：2017-09-07
申请号：US15451160
申请日：2017-03-06
Inventor： Hao Xin , Min Liang , Mark A. Neifeld , Tim Harvey
CPC classification number: G01N21/55 , G01N22/00 , G01N2201/123 , G01N2201/126 , G01V8/005 , H03M7/30 , H03M7/3062
Abstract: A threat detection system having a reconfigurable reflect-array and compressive sensing unit to effectively detect objects that are a threat is presented. A statistical library, having a wide range of threat and non-threat examples and capable of incorporating new examples while being used, is utilized by several optimization algorithms to calculate an optimal illumination pattern for compressive sensing detection. The reflect-array is configured to produce the optimal illumination pattern via a plurality of reflect-array elements. In this way, a plurality of data may be parallel processed, thereby increasing the detection speed and reducing cost.
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公开(公告)号：US20210278518A1
公开(公告)日：2021-09-09
申请号：US16325111
申请日：2017-08-15
Inventor： Hao Xin , Min Liang , Siyang Cao
IPC: G01S13/42 , G01S13/931 , G05D1/02
Abstract: A high performance, low-cost automotive radar is designed by mounting receivers around a 3D printed Luneburg lens. With this configuration, the antenna radiation pattern is maintained for all angles, (which means no beam deformation). Further, the present radar is capable of performing detection at all azimuth and elevation angles with high angle resolution and broadband operation. The radar adaptively adjusts its spatial sensing pattern, sweeping frequency band, pulse repetition frequency and coherent processing interval according to the environment. This is accomplished by initially performing a rough scan, which updates sensing results via a narrow bandwidth waveform and wide beam scanning. When interested objects are identified, a high-resolution detailed scan is performed in a specific region of interest. In this way, a much more effective detection can be obtained. Moreover, a method of mitigating interference of the 3D printed Luneburg lens based radar and a method of improving the angle resolution using a lens based MIMO approach is disclosed.
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公开(公告)号：US20210151894A1
公开(公告)日：2021-05-20
申请号：US16622811
申请日：2018-06-15
IPC: H01Q15/10
Abstract: A hollow light-weight, low-cost, and high-performance 3D Luneburg lens structure using partially-metalized thin film, string, threads, fiber or wire base metamaterial to implement the continuously varying relative permittivity profile, characteristic of Luneburg lens structures, is disclosed. The hollow light-weight lens structure is based on the effective medium approach and may be implemented by a number of means. Further, most of the volume of the lens structure is free-space, thus the weight of the lens is significantly less than conventional 3D Luneburg lens structures of the same dimensions.
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8.发明授权公开(公告)号：US09970870B2
公开(公告)日：2018-05-15
申请号：US15451160
申请日：2017-03-06
Inventor： Hao Xin , Min Liang , Mark A. Neifeld , Tim Harvey
CPC classification number: G01N21/55 , G01N22/00 , G01N2201/123 , G01N2201/126 , G01V8/005 , H03M7/30 , H03M7/3062
Abstract: A threat detection system having a reconfigurable reflect-array and compressive sensing unit to effectively detect objects that are a threat is presented. A statistical library, having a wide range of threat and non-threat examples and capable of incorporating new examples while being used, is utilized by several optimization algorithms to calculate an optimal illumination pattern for compressive sensing detection. The reflect-array is configured to produce the optimal illumination pattern via a plurality of reflect-array elements. In this way, a plurality of data may be parallel processed, thereby increasing the detection speed and reducing cost.
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