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公开(公告)号：US20250062544A1
公开(公告)日：2025-02-20
申请号：US18451393
申请日：2023-08-17
Inventor： Alexander D. Johnson , James F. Fung
Abstract: An antenna assembly includes a first flare arm, a second flare arm located adjacent to the first flare arm, a feed block having an opening therein, a feed slot extending from the opening to an outer periphery of the feed block, and a feed line integral with the feed block as a contiguous unitary component. The first flare arm and the second flare arm are symmetric about the feed block. The feed line can have a first portion integrated into the feed block and a second portion at least partially extending across the feed slot. A method of fabricating an antenna assembly includes additively manufacturing a feed block having a feed slot adjacent to a first flare arm and a second flare arm, and additively manufacturing a feed line having a first portion integral with the feed block, and a second portion at least partially extending across the feed slot.
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公开(公告)号：US20240250430A1
公开(公告)日：2024-07-25
申请号：US18101450
申请日：2023-01-25
Inventor： Jean L. Kubwimana , Alexander D. Johnson , Jacob Tamasy , James F. Fung , Matthew J. Ney
CPC classification number: H01Q9/0414 , H01Q1/48 , H01Q9/045 , H01Q21/065
Abstract: An antenna assembly includes a first dielectric material, a ground plane above the first dielectric material, and two or more patch antennas above the ground plane. In an example, the ground plane has a first aperture slot, and a second aperture slot that is non-intersecting with the first aperture slot. The antenna assembly further includes a second dielectric material separating the two or more patch antennas from the ground plane. In an example, the first dielectric material comprises a printed circuit board (PCB). In some examples, the ground plane and the two or more patch antennas are manufactured using additive manufacturing techniques (such as three-dimensional printing techniques), and in some such examples, the second dielectric material includes dielectric foam. For example, the dielectric foam supports the two or more patch antennas above the ground plane.
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公开(公告)号：US20250062538A1
公开(公告)日：2025-02-20
申请号：US18451396
申请日：2023-08-17
Inventor： Alexander D. Johnson , James F. Fung
Abstract: An antenna assembly includes an electrically conductive ground plane; a signal pin adjacent to the ground plane; and a tapered conductive surface coupled to the signal pin, the tapered conductive surface being symmetric about an axis passing through the signal pin and orthogonal to the ground plane, where the ground plane and the tapered conductive surface are an additively manufactured contiguous unitary component. The antenna assembly can further include a support structure extending from the ground plane to the tapered conductive surface. The support structure can be coupled to an outer edge of the tapered conductive surface or a center region of the tapered conductive surface. The antenna assembly can further include a cover over the tapered conductive surface thereby forming a hollow region between the cover and the tapered conductive surface.
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公开(公告)号：US20240283168A1
公开(公告)日：2024-08-22
申请号：US18170859
申请日：2023-02-17
Inventor： Jacob Tamasy , Alexander D. Johnson , James F. Fung
Abstract: An antenna assembly includes at least one conductive dipole arm and an adjacent conductive wall (“H-wall”), which enables efficient radiation from the conductive dipole arm without added losses. A single-ended antenna feed is configured to receive a single-ended signal. The antenna assembly further includes a ground plane and a conductive dipole arm in planar alignment with a surface of the ground plane. The conductive wall is electrically coupled with the ground plane and has an end adjacent to, and physically separate from, the conductive dipole arm, an axial length of the H-wall being orthogonal to the ground plane. The antenna assembly further includes a feedline electrically coupled with the conductive dipole arm and the single-ended antenna feed.
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公开(公告)号：US20200014121A1
公开(公告)日：2020-01-09
申请号：US16029222
申请日：2018-07-06
Inventor： Andrew C. Maccabe , James F. Fung , Randall R. Lapierre , Benjamin G. McMahon
Abstract: An array antenna has a plurality of antenna unit cells arranged in rows and columns, or in another configuration. Each unit cell from the plurality of unit cells includes a circularly polarized radiator and a balun. The array antenna further includes a reactive element or a circuit element (such as a capacitor or resistor or even an inductor) on the circularly polarized radiator that is coupled an adjacent unit cell in one of the row and the column. A spacing distance between adjacent unit cells coupled via the circuit element that is at most half of a wavelength at a frequency maximum of the array antenna, wherein the spacing distance reduces likelihood of grating lobes.
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Patent Agency Ranking
公开(公告)号：US11652299B2
公开(公告)日：2023-05-16
申请号：US17184985
申请日：2021-02-25
Inventor： Matilda Livadaru , Mark Fosberry , James F. Fung , Alexander D. Johnson , Randall R. Lapierre , Daniel G. Morin
CPC classification number: H01Q21/062 , H01Q9/285 , H01Q21/26
Abstract: A tightly coupled dipole array is an egg-crate configuration defined by a plurality of electrically connected antenna unit cells. At least one of the unit cells utilizes a short or conductive element that shorts the common mode resonance. Shorting the common mode resonance in an intentional manner removes instances of the common mode resonance. To achieve the shorting of the common mode resonance, a conductive element is connected with one of the dipole arms and connected to the outer conductor of the feed or a ground plane. This creates a grounding loop that pushes the resonance out of the band of interest.
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公开(公告)号：US11600910B1
公开(公告)日：2023-03-07
申请号：US17644821
申请日：2021-12-17
Inventor： Alexander D. Johnson , James F. Fung , William K. Grefe
Abstract: The system for an antenna assembly for use on unmanned underwater vehicles (UUV). The antennas are low-cost, lightweight, single-use, and have a small form factor amenable to use on a micro-UUV. A central post and pivotally attached arms form an antenna (e.g., a monopole) that is lifted via an aerial, kite, or the like, when deployed from the UUV to extend the line of site of the antenna several meters above the surface of the water. In some cases, the antenna may be used on a number of UUVs in a swarm formation.
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公开(公告)号：US11342687B1
公开(公告)日：2022-05-24
申请号：US17235271
申请日：2021-04-20
Inventor： Court E. Rossman , Maxwell L. Affleck , Matthew F. Chrobak , James F. Fung , Paul D. Zemany
Abstract: An endfire antenna structure is disclosed that is for use on aerodynamic systems. The antenna structure includes a first layer of patterned metal, a second layer of patterned metal, and a stack of material layers that includes the first layer of patterned metal and the second layer of patterned metal. The first layer of patterned metal includes a plurality of parallel slots etched through the metal. The second layer of patterned metal includes a tapered radio frequency (RF) feedline having a narrow end coupled to an input/output (I/O) antenna connection. The second layer of patterned metal is aligned over the first layer of patterned metal such that the tapered RF feedline has a length that extends across the plurality of parallel slots. The stack of material layers is flexible such that the stack of material layers is configured to wrap at least partially around the fuselage of an aerodynamic system.
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公开(公告)号：US09560785B1
公开(公告)日：2017-01-31
申请号：US14030525
申请日：2013-09-18
Inventor： David A. Brigham , James F. Fung , Gregory S. Laste , Bryan A. Thibideau , Joseph C. Brackett
CPC classification number: H05K7/10 , H05K1/0286 , H05K3/225 , H05K3/325 , H05K7/1061 , H05K13/00 , H05K2201/10378 , H05K2201/10409 , H05K2201/10719 , H05K2203/176
Abstract: The mezzanine card system and method of use thereof provides a baseboard having opposing sides, each side configured to receive a mezzanine card thereon. A plurality of mezzanine cards are provided having integrated circuits, such as Field Programmable Gate Arrays, fixedly attached thereon. The mezzanine cards of the system reduce reprogramming time from about 15 months to about six weeks. This drastic reduction in reprogramming time provides great advantages for circuitry systems, especially when these systems are used within battlefield and electronic warfare technology. The surfaces of the baseboard are an Electroless Nickel, Electroless Palladium, and Immersion Gold (ENEPIG) plated finish.
Abstract translation: 夹层卡系统及其使用方法提供了具有相对侧的基板，每个侧面配置成在其上接收夹层卡。 提供了多个夹层卡，其具有固定地附接在其上的集成电路，例如现场可编程门阵列。 系统的夹层卡将重编程时间从大约15个月减少到大约六周。 重新编程时间的急剧减少为电路系统提供了巨大的优势，特别是当这些系统在战场和电子战技术中使用时。 踢脚板的表面是无电镀镍，无电镀钯和浸金（ENEPIG）电镀。
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公开(公告)号：US20250030175A1
公开(公告)日：2025-01-23
申请号：US18356595
申请日：2023-07-21
Inventor： Alexander D. Johnson , Jean L. Kubwimana , Jacob Tamasy , James F. Fung
Abstract: An antenna assembly includes a first flexible layer including a conductive ground plane on a first layer of dielectric material, and a second flexible layer including a first array of conductive patches on a second layer of dielectric material. The antenna assembly further includes a second array of conductive patches on a third layer of dielectric material. The first, second, and third flexible layers are rollable or foldable, to provide a stowed position for the antenna assembly and a deployed position for the antenna assembly. In an example, the first array of conductive patches includes at least a first patch and a second patch, and the second array of conductive patches includes at least a third patch and a fourth patch. In the deployed position, the first patch is above the third patch and the ground plane, and the second patch is above the fourth patch and the ground plane.
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