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1. 发明授权

US11709251B1 Radar node with full azimuthal coverage, and associated surveillance methods 有权
公开(公告)号：US11709251B1
公开(公告)日：2023-07-25
申请号：US17117031
申请日：2020-12-09
申请人： FIRST RF Corporation
发明人： Farzin Lalezari , Ian Rumsey , Luke Sankey
IPC分类号： G01S13/87 , G01S7/00 , G01S13/00 , G01S13/931 , G01S13/66 , G01S13/42
CPC分类号： G01S13/87 , G01S7/003 , G01S13/003 , G01S13/42 , G01S13/66 , G01S13/931
摘要： A pair of radar nodes, each with full azimuthal coverage, cooperate to identify the position of an object without explicit measurements of the object's azimuthal coordinate. A first radar node, operating within a first azimuth field of view (FOV), measures a first elevation angle and a first slant range of the object. A second radar node, operating within a second azimuth FOV, measures a second elevation angle and a second slant range of the object. The second radar node transmits the data to the first radar node, which identifies, based on the first and second azimuth FOVs, an object half space within which the object is located. The first radar node then calculates the position of the object without an ambiguous solution. Alternatively, the first radar uses the first and second azimuth FOVs to identify and reject the ambiguous solution.

2. 发明授权

US10714837B1 Array antenna with dual polarization elements 有权
公开(公告)号：US10714837B1
公开(公告)日：2020-07-14
申请号：US16176217
申请日：2018-10-31
申请人： FIRST RF Corporation
发明人： Ian S. Rumsey , Sean P. McDevitt , Robert T. Rebich , Dean A. Paschen , Luke S. Sankey
IPC分类号： H01Q13/10 , H01Q21/00 , H01Q15/24 , H01Q21/06 , H01Q1/48
摘要： An array antenna with dual polarization elements is provided. Each dual polarization element comprises a first sub-element and a second sub-element, each of which comprises a radiator that is embodied in and/or on a planar member and a balanced feed for the radiator that divides the radiator into two sections that that are mirror images of one another relative to a plane that passes through the balanced feed structure and is perpendicular to the planar member. Further, the radiator of the first sub-element is positioned to lie in an isolation plane associated with the second sub-element. Two such elements are positioned with respect to one another so that the planar members associated with the first elements are coplanar.

3. 发明授权

US09673526B1 Dual-frequency stacked patch antenna 有权
公开(公告)号：US09673526B1
公开(公告)日：2017-06-06
申请号：US14656646
申请日：2015-03-12
申请人： FIRST RF Corporation
发明人： Anthony J. Jensen , P. Keith Kelly
IPC分类号： H01Q13/10 , H01Q9/04 , H01Q1/12
CPC分类号： H01Q9/0414 , H01Q13/10 , H01Q21/28
摘要： The invention is directed to a dual-frequency stacked patch antenna. In one embodiment, the antenna comprises a pair of electrically conductive, nested, tub-like structures and a feed surface. The edges of the tub-like structures and the feed surface define a surface that is adapted to be conformal to an application surface that defines a cavity in which the antenna is positioned. The edges of the tub-like structures and the edge of the feed surface define a pair of slots for receiving and/or transmitting two signals with different center frequencies. Located and extending throughout each of the slots is a slot modification structure comprised of inter-digitated fingers that provide capacitive loading and enhance the low observability of the antenna.

4. 发明授权

US08248298B2 Orthogonal linear transmit receive array radar 有权
标题翻译：正交线性发射接收阵列雷达
公开(公告)号：US08248298B2
公开(公告)日：2012-08-21
申请号：US12610318
申请日：2009-10-31
申请人： Farzin Lalezari
发明人： Farzin Lalezari
IPC分类号： G01S13/08 , G01S13/00 , H01Q3/00 , H01Q21/08
CPC分类号： H01Q21/24 , H01Q21/08
摘要： A radar system having orthogonal antenna apertures is disclosed. The invention further relates to an antenna system wherein the orthogonal apertures comprise at least one transmit aperture and at least one receive aperture. The cross-product of the transmit and receive apertures provides a narrow spot beam and resulting high resolution image. An embodiment of the invention discloses orthogonal linear arrays, comprising at least one electronically scanned transmit linear array and at least one electronically scanned receive linear array. The design of this orthogonal linear array system produces comparable performance, clutter and sidelobe structure at a fraction of the cost of conventional 2D filled array antenna systems.
摘要翻译：公开了一种具有正交天线孔径的雷达系统。本发明还涉及一种天线系统，其中所述正交孔包括至少一个发射孔和至少一个接收孔。发射和接收孔的交叉产物提供窄的点光束和所得到的高分辨率图像。本发明的实施例公开了包括至少一个电子扫描的发射线性阵列和至少一个电子扫描的接收线性阵列的正交线性阵列。这种正交线性阵列系统的设计以常规2D填充阵列天线系统的成本的一小部分产生可比较的性能，杂波和旁瓣结构。

5. 发明授权

US09397404B1 Crossed-dipole antenna array structure 有权
标题翻译：交叉偶极天线阵列结构
公开(公告)号：US09397404B1
公开(公告)日：2016-07-19
申请号：US14268626
申请日：2014-05-02
申请人： FIRST RF Corporation
发明人： Sean P. McDevitt , Ian S. Rumsey , Joseph Mruk , P. Keith Kelly
IPC分类号： H01Q21/26 , H01Q9/16
CPC分类号： H01Q9/16 , H01Q1/246 , H01Q21/08 , H01Q21/26
摘要： The invention is directed to a crossed-dipole antenna structure that, in one embodiment, is comprised of: (a) a first planar dielectric substrate with a feed portion and an antenna portion that supports a first dipole antenna and (b) a second planar dielectric substrate that supports a second dipole antenna or substantial portion of such an antenna. The first and second planar dielectric substrates are positioned substantially perpendicular to one another and so as to form a crossed-dipole antenna from the first and second dipole antennas. The feed portion of the first planar dielectric substrate is electrically and mechanically connected to the second planar substrate by a plurality of solder joints established in the corners defined by the intersections of the first and second planar dielectric substrates.
摘要翻译：本发明涉及一种交叉偶极子天线结构，其在一个实施例中包括：（a）具有馈电部分的第一平面介质衬底和支撑第一偶极子天线的天线部分，以及（b）第二平面支持第二偶极天线或这种天线的大部分的介质基片。第一和第二平面电介质基板彼此基本垂直地定位，以便从第一和第二偶极天线形成交叉偶极天线。第一平面电介质基片的馈电部分通过由第一和第二平面电介质基片的交点限定的拐角中建立的多个焊接点电连接和机械连接到第二平面基片。

6. 发明授权

US08884834B1 Antenna system with an antenna and a high-impedance backing 有权
标题翻译：具有天线和高阻抗背衬的天线系统
公开(公告)号：US08884834B1
公开(公告)日：2014-11-11
申请号：US13624048
申请日：2012-09-21
申请人： FIRST RF Corporation
发明人： Dean Alan Paschen
IPC分类号： H01Q9/44
CPC分类号： H01Q9/28 , H01Q15/006
摘要： The present invention is directed to an antenna system that includes a broadband free-space antenna (i.e., an antenna that does not utilize a ground plane to create a resonant structure) and a high-impedance backing that allows the antenna to be positioned adjacent to a conductive surface that but for the high impedance backing would adversely affect the broadband operation of the antenna. The high-impedance backing substantially preserves the bandwidth of the antenna while also allowing the antenna to be positioned within λ/4 of the conductive surface and accommodate a predetermined amount of power.
摘要翻译：本发明涉及一种天线系统，其包括宽带自由空间天线（即，不利用接地平面以产生谐振结构的天线）和允许天线邻近定位的高阻抗背衬的天线系统但是对于高阻抗背衬而言，导电表面将不利地影响天线的宽带操作。高阻抗背衬基本上保持天线的带宽，同时还允许天线定位在导电表面的λ/ 4内并且适应预定量的功率。

7. 发明授权

US11621748B1 High-power transmit beamforming with impedance-mismatched antenna arrays 有权
公开(公告)号：US11621748B1
公开(公告)日：2023-04-04
申请号：US17530223
申请日：2021-11-18
申请人： FIRST RF Corporation
发明人： Arian C. Lalezari , Farzin Lalezari , Michael R. Markey , Michael R. Goulder
IPC分类号： H04B7/0426 , H04B7/0456 , H04B7/06
摘要： A method for controlling an antenna array includes determining, based on a beamstate, an initial weight vector of excitations. The initial weight vector is transformed into an active-impedance vector. When the modulus of any element of the active-impedance vector exceeds a threshold, the initial weight vector is unsafe. In this case, a substitute weight vector is identified such that (i) the initial and substitute weight vectors have a similarity measure that exceeds a similarity threshold and (ii) the substitute weight vector is safe. The antenna array may then be driven according to the substitute weight vector to emit radiation having a radiation pattern that approximates that of the beamstate. The substitute weight vector may be found by searching a library of safe weight vectors or by adjusting the excitations of the initial weight vector until a safe alternative is found.

8. 发明授权

US10535917B1 Antenna structure for use with a horizontally polarized signal 有权
公开(公告)号：US10535917B1
公开(公告)日：2020-01-14
申请号：US15970528
申请日：2018-05-03
申请人： FIRST RF Corporation
发明人： Farzin Lalezari , Michael R. Goulder
IPC分类号： H01Q1/28 , H01Q1/48 , H01Q9/04 , H01Q3/34 , H01Q21/06 , H01Q1/42 , H01Q1/52 , H01Q1/30 , H01Q9/16 , H01Q9/18 , H01Q9/20 , H01Q9/06
摘要： The invention is directed to an antenna structure for producing a horizontally polarized beam. In one embodiment, the antenna structure includes a first quarter-wave patch antenna and a second quarter-wave patch antenna that are positioned such that the ground planes of the patch antennas or a ground plane shared by the patch antennas is disposed between the patches of the two antennas and the shorting structures associated with the antennas are substantially aligned. In operation, the antenna structure is capable of processing an omni-directional, horizontally polarized beam.

9. 发明授权

US10374299B1 Method for making a radiator structure for a helical antenna 有权
公开(公告)号：US10374299B1
公开(公告)日：2019-08-06
申请号：US14615879
申请日：2015-02-06
申请人： FIRST RF Corporation
发明人： Robert J. Marshall
IPC分类号： H01Q1/36 , H01Q11/08
摘要： An embodiment of the invention is directed to a method for manufacturing a radiator structure for a conical helical antenna that includes: (a) processing a piece of metal so as to produce a first metal structure with conical exterior and interior surfaces, and (b) processing the first metal structure to remove material between the conical exterior and interior surfaces to yield a radiator structure with a conical helical shaped conductor that can be combined with a ground plane to produce a conical helical antenna. In one embodiment, the radiator structure includes a matching structure and a cap with the conical helical conductor, matching structure, and cap being a single piece of metal.

10. 发明授权

US08508404B1 Fuze system that utilizes a reflected GPS signal 有权
标题翻译： Fuze系统利用反射的GPS信号
公开(公告)号：US08508404B1
公开(公告)日：2013-08-13
申请号：US13175758
申请日：2011-07-01
申请人： Benjamin R. Wilmhoff
发明人： Benjamin R. Wilmhoff
IPC分类号： G01S19/18
CPC分类号： G01S19/18 , F42C13/045
摘要： The present invention is directed to fuze system for munition that produces a height-of-burst (HOB) signal using two Global Positioning System (GPS) signals, the first signal being from a particular GPS satellite (the direct GPS signal) and the second signal being the GPS signal from the same GPS satellite after the signal has been reflected from the surface adjacent to the target. In one embodiment, the HOB signal is generated when there is a substantial correlation between the reflected GPS signal and direct GPS delayed by an amount of time that is indicative of the desired HOB.
摘要翻译：本发明涉及使用两个全球定位系统（GPS）信号产生高度突发（HOB）信号的弹药引信系统，第一信号来自特定GPS卫星（直接GPS信号）和第二信号信号是信号从邻近目标的表面反射后来自同一GPS卫星的GPS信号。在一个实施例中，当反射的GPS信号和直接GPS延迟指示期望的HOB的时间量之间存在实质相关性时，生成HOB信号。

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