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71. 发明申请

US20110095955A1 FRACTAL ANTENNAS AND FRACTAL RESONATORS 审中-公开
标题翻译：分离天线和分离谐振器
公开(公告)号：US20110095955A1
公开(公告)日：2011-04-28
申请号：US12829622
申请日：2010-07-02
申请人： Nathan Cohen
发明人： Nathan Cohen
IPC分类号： H01Q19/10 , H01Q15/14
CPC分类号： H01Q21/205 , H01Q1/246 , H01Q1/36 , H01Q1/38 , H01Q21/28
摘要： An antenna includes at least one element whose physical shape is at least partially defined as a second or higher iteration deterministic fractal. The resultant fractal antenna does not rely upon an opening angle for performance, and may be fabricated as a dipole, a vertical, or a quad, among other configurations. The number of resonant frequencies for the fractal antenna increases with iteration number N and more such frequencies are present than in a prior art Euclidean antenna. Further, the resonant frequencies can include non-harmonically related frequencies. At the high frequencies associated with wireless and cellular telephone communications, a second or third iteration, preferably Minkowski fractal antenna is implemented on a printed circuit board that is small enough to fit within the telephone housing.
摘要翻译：天线包括至少一个元件，其物理形状至少部分地被定义为第二或更高的迭代确定性分形。所得到的分形天线不依赖于性能的打开角度，并且可以制造为偶极子，垂直或四边形以及其他构造。分形天线的谐振频率数量随着迭代数N的增加而增加，并且存在比现有技术的欧几里得天线更多的频率。此外，谐振频率可以包括非谐波相关频率。在与无线和蜂窝电话通信相关联的高频下，第二或第三迭代，优选地，明科夫斯基分形天线被实现在足够小以装配在电话机壳内的印刷电路板上。

72. 发明申请

US20110050360A1 WIDEBAND ELECTROMAGNETIC CLOAKING SYSTEMS 审中-公开
标题翻译：宽带电磁悬挂系统
公开(公告)号：US20110050360A1
公开(公告)日：2011-03-03
申请号：US12732059
申请日：2010-03-25
申请人： Nathan Cohen , Obinna Okkorra , Phillip Salkind
发明人： Nathan Cohen , Obinna Okkorra , Phillip Salkind
IPC分类号： H01P5/12
CPC分类号： H01Q21/205
摘要： Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures.
摘要翻译：描述了非周期配置中的谐振器的布置，其可以用于物体的电磁遮蔽。作为结构的谐振器的总体组件并不都周期性地重复，并且至少一些谐振器被间隔开，使得它们的相位中心被多于一个波长分开。这些布置可以包括布置成使得每个尺寸或几何形状对应于在特定频率范围内共振的中等或高“Q”响应的几种不同尺寸和/或几何形状的谐振器，并且在该特定组中的该类别元件的排列是周期性的在整体结构上。分组的相对间距和布置可以通过自相似性和原点对称性来定义。描述基于分形的散射。进一步描述了可以激活和去活性的伪装/透镜结构的结合状态层结构。

73. 发明申请

US20100134373A1 ANTENNA SYSTEM FOR RADIO FREQUENCY IDENTIFICATION 审中-公开
标题翻译：用于无线电频率识别的天线系统
公开(公告)号：US20100134373A1
公开(公告)日：2010-06-03
申请号：US12701721
申请日：2010-02-08
申请人： Nathan Cohen
发明人： Nathan Cohen
IPC分类号： H01Q9/16 , H01Q1/38
CPC分类号： H01Q1/2225 , H01Q1/22 , H01Q1/2208 , H01Q1/38 , H01Q9/16 , H01Q9/26 , H01Q9/42 , H01Q15/0093
摘要： An antenna including an electrically conductive portion defined substantially by a self-similar geometry present at multiple resolutions. The electrically conductive portion includes two or more angular bends and is configured to radiate broadband electromagnetic energy. The antenna further includes an electrically non-conductive portion that structurally supports the electrically conductive portion.
摘要翻译：天线包括基本上由多个分辨率存在的自相似几何形状限定的导电部分。导电部分包括两个或多个角弯曲并且被配置成辐射宽带电磁能。天线还包括在结构上支撑导电部分的非导电部分。

74. 发明申请

US20090153420A1 Wideband Antenna System for Garments 有权
标题翻译：宽带天线系统的服装
公开(公告)号：US20090153420A1
公开(公告)日：2009-06-18
申请号：US12118957
申请日：2008-05-12
申请人： Nathan Cohen , David Moschella
发明人： Nathan Cohen , David Moschella
IPC分类号： H01Q1/12
CPC分类号： H01Q1/273 , H01Q1/36 , H01Q9/16 , H01Q9/30
摘要： A portable antenna system includes an antenna that is substantially defined by one or more portions that include electrically conductive self-similar extensions. The system also includes an article of clothing in which the antenna is attached to a surface of the article of clothing such that electrically conductive self-similar extensions extend across the surface of the article of clothing.
摘要翻译：便携式天线系统包括基本上由包括导电自相似扩展部分的一个或多个部分限定的天线。该系统还包括一件衣服，其中天线附接到衣服的表面，使得导电的自相似延伸部延伸穿过衣物表面。

75. 发明公开

US20230304834A1 CONFORMAL APERTURE ENGINE SENSORS AND MESH NETWORK 审中-公开
公开(公告)号：US20230304834A1
公开(公告)日：2023-09-28
申请号：US18325254
申请日：2023-05-30
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen , Alexander Shelman-Cohen
IPC分类号： G01D11/30 , H05K1/14 , H05K3/46 , H05K3/36
CPC分类号： G01D11/30 , H05K1/144 , H05K3/4635 , H05K3/361 , G01D7/00
摘要： Wireless sensor devices are described which harvest energy and provide an antenna or antennas for wireless communication on a relatively small form factor, preferably one that is co-extensive with a largest component of the device, e.g., an antenna layer or sensor layer. The devices are able to sense and/or control certain specific parameters of a system; store energy, e.g., in a supercapacitor system or battery system; transmit that as information/signals via a wireless link, e.g., RF or optical link; receive information from other devices and relay that information. Such devices accordingly may be self-powered and wireless devices, and not dependent on a separate device or form factor to provide a power source. Such devices can be entirely autonomous or substantially so, can be mobile or fixed, and may require little servicing over a period of time. The devices can be used as sensor nodes in a wireless mesh network.

76. 发明申请

US20220381686A1 METHOD AND APPARATUS FOR DETECTION OF A METASURFACE 有权
公开(公告)号：US20220381686A1
公开(公告)日：2022-12-01
申请号：US17818124
申请日：2022-08-08
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen
IPC分类号： G01N21/45 , G01N21/31
摘要： Systems, apparatus, and methods are described that provide for detection of a metamaterial surface (metasurface) on a device or object. Multitone EM radiation is transmitted to the object having the metasurface. Two or more heterodyned tones are backscattered from the object and detected.

77. 发明授权

US11408976B1 Method and apparatus for detection of a metasurface 有权
公开(公告)号：US11408976B1
公开(公告)日：2022-08-09
申请号：US16399778
申请日：2019-04-30
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen
IPC分类号： G01S7/41 , G01S13/88
摘要： Systems, apparatus, and methods are described that provide for detection of a metamaterial surface (metasurface) on a device or object. Multitone EM radiation is transmitted to the object having the metasurface. Two or more heterodyned tones are backscattered from the object and detected.

78. 发明申请

US20220244369A1 SATELLITE ORBITAL MONITORING AND DETECTION SYSTEM USING FRACTAL SUPERSCATTERER SATELLITE REFLECTORS (FSR) 有权
公开(公告)号：US20220244369A1
公开(公告)日：2022-08-04
申请号：US17672071
申请日：2022-02-15
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen , Alexander Shelman-Cohen
IPC分类号： G01S13/06 , H01Q15/00 , G01S13/75 , B64G3/00 , B64G1/22
摘要： Metamaterials are described which can be employed with satellites, e.g., small sats, to increase the observability of such satellites. Any type of suitable metamaterial can be used. In exemplary embodiments fractal-based patterns or structures may be used.

79. 发明授权

US11322850B1 Deflective electromagnetic shielding 有权
公开(公告)号：US11322850B1
公开(公告)日：2022-05-03
申请号：US15845184
申请日：2017-12-18
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen
IPC分类号： H01Q15/00 , F41H3/00 , H01Q17/00 , G02B5/00
摘要： Systems according to the present disclosure provide one or more surfaces that function as power transferring surfaces for which at least a portion of the surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission.

80. 发明授权

US11249178B2 Satellite orbital monitoring and detection system using fractal superscatterer satellite reflectors (FSR) 有权
$Satellite orbital monitoring and detection system using fractal superscatterer satellite reflectors (FSR)$
公开(公告)号：US11249178B2
公开(公告)日：2022-02-15
申请号：US16733116
申请日：2020-01-02
申请人： Fractal Antenna Systems, Inc.
发明人： Nathan Cohen
IPC分类号： G01S13/06 , H01Q15/00 , G01S13/75 , B64G3/00 , B64G1/22
摘要： Metamaterials are employed with satellites, e.g., small satellites, to increase the observability of such satellites. Any type of suitable metamaterial can be used. In exemplary embodiments fractal-based patterns or structures may be used. A super scatterer having a metasurface is employed for the satellite and enhances the radar reflection for a given area of the satellite. Such detection can be used for monitoring and/or controlling the orbits of satellite space craft.

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