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1. 发明申请

US20230064088A1 VARIABLE EXTERNAL STRUCTURES ON SYSTEMS FOR SIGNATURE MANAGEMENT 有权
公开(公告)号：US20230064088A1
公开(公告)日：2023-03-02
申请号：US17894689
申请日：2022-08-24
申请人： The United States of America, as represented by the Secretary of the Navy
发明人： Matthew Michael Sheehan
IPC分类号： H01Q17/00
摘要： Provided is an apparatus and method for radar calibration that utilizes external shielding structures to be constructed around the body frame of a system to manage external signature presence and block unwanted signal emissions and intrusions. The inventive structures can adapt to desired user requirements or to environmental change as needed. The variable shielding with isolating connectors to the body frame of the system allows for aerodynamic needs to be sustained due to the mesh design while also protecting against electromagnetic spectrum interference and electro-optical short wave and long wave infrared signature emissions. The shielding can also be formed to emit a known or desired radio frequency response based on geometric shapes in order to influence radar cross-section readings. Communication with external environment is completed through the use of the shielding as a series of antennas.

2. 发明授权

US11552407B1 RF test hat 有权
公开(公告)号：US11552407B1
公开(公告)日：2023-01-10
申请号：US17830631
申请日：2022-06-02
申请人： The United States of America, as represented by the Secretary of the Navy
发明人： Christian Hugo , Gary Salvail
IPC分类号： H01Q17/00 , G01R29/10
摘要： A radio frequency (RF) test hat. The RF test hat may comprise: a body having a substantially rectangular portion with open forward and aft ends, an end cap, arm and strap assembly, absorber material, a receiving antenna, lens, and upper and lower mesh screens. The end cap may couple to the open forward end of the body. The arm and strap assembly may hingedly couple to the open aft end of the body. The absorber material may be within the end cap. The receiving antenna may be disposed within the first absorber material and may measure the intensity of a beam of electromagnetic radiation. The lens may be located within the middle portion of the body and may spread the beam across a larger surface area of the absorber material. The upper and lower mesh screens may be disposed between the end cap and lens and may comprise openings that are substantially hexagonal in shape.

3. 发明授权

US11509062B2 Broadband wire antenna with resistive patterns having variable resistance 有权
公开(公告)号：US11509062B2
公开(公告)日：2022-11-22
申请号：US16308775
申请日：2017-06-09
申请人： THALES
发明人： Stéphane Mallegol , Michel Jousset , Pierre Belec
IPC分类号： H01Q17/00 , H01Q9/27 , H01Q11/10
摘要： The invention relates to a wire antenna adapted to operate in at least one predetermined frequency band, comprising a plurality of superimposed layers, comprising at least one radiating element placed on a support layer, wherein the support layer is placed on a spacer substrate, and wherein the spacer substrate is placed on a reflector plane comprising at least one resistive layer between the support layer of the radiating element(s) and the substrate spacer, while the resistive layer comprises at least two sets of nested resistive patterns. This antenna is such that the sets of resistive patterns have resistance values gradually varying between a central antenna point and an outer edge of the antenna, in order to achieve a resistance gradient.

4. 发明授权

US11509061B2 Milliwave band radio wave absorption sheet and milliwave radio wave absorption method 有权
公开(公告)号：US11509061B2
公开(公告)日：2022-11-22
申请号：US16756925
申请日：2018-06-27
申请人： KANSAI PAINT CO., LTD.
发明人： Toshiaki Nagano
IPC分类号： H01Q17/00 , H01Q15/14
摘要： Provided is a light weight and remarkably flexible sheet-shaped radio wave absorber having excellent radio wave absorbing capacity in milliwave band frequencies. The invention is a milliwave band radio wave absorption sheet comprising a radio wave reflection layer (A), a radio wave absorption layer (B) disposed above the layer (A) so as to be parallel thereto, and a protective layer (C) disposed above the layer (B) so as to be parallel thereto. The layer (B) has, at a frequency of 79 GHz, a dielectric constant, wherein the real part is 10 to 20 and the absolute value of the imaginary part is 4 to 10. The layer (B) has a film thickness of 200 to 400 μm. The absolute value of the imaginary part/real part from the dielectric constant is within a range of 0.30 to 0.60. The layer (C) has, at a frequency of 79 GHz, a dielectric constant, wherein the real part is 1.5 to 8.0 and the absolute value of the imaginary part is less than 1.0, and has a film thickness of 50 to 200 μm. In the milliwave band radio wave absorption sheet, the optical reflectance at an incident angle of 60° is 50% or greater, and the optical reflectance at an incident angle of 20° is 25% or greater. In addition, the invention provides a milliwave band radio wave absorption method using the radio wave absorption sheet, and a radio wave damage prevention method involving the installation of the radio wave absorption sheet.

5. 发明授权

US11508674B2 High power thermally conductive radio frequency absorbers 有权
公开(公告)号：US11508674B2
公开(公告)日：2022-11-22
申请号：US15370974
申请日：2016-12-06
申请人： THE BOEING COMPANY
发明人： Robert L. Reynolds , Martin W. Bieti , Robert Choo
IPC分类号： H01L23/66 , H01L23/367 , H01Q17/00
摘要： Radio frequency (“RF”) absorbing devices used as RF termination devices or free space absorbers, for example, are formed with a planar wafer made of an inorganic thermally conductive material. The planar wafer has a first surface and a second surface opposite the first surface. A metallized resistive film is disposed on the first surface. A metallized reflective heat sink is disposed on the second surface.

6. 发明授权

US11476956B2 Compact antenna test range equipment 有权
公开(公告)号：US11476956B2
公开(公告)日：2022-10-18
申请号：US17203055
申请日：2021-03-16
申请人： WAVEPRO INCORPORATED
发明人： Rong-Chung Liu
IPC分类号： H04B17/14 , H04B17/16 , H04B17/21 , H01Q17/00 , H01Q15/18
摘要： A compact antenna test range equipment of the invention includes a microwave darkroom including a plurality of walls connected to each other, a reflector disposed in the microwave darkroom and comprising a reflecting surface having a polygon shape comprising a plurality of edges and a plurality of corners, each of the corners is located between two of the edges, wherein each of the corners aiming at one of the walls, a feeding antenna disposed in the microwave darkroom and corresponding to any position of the reflecting surface, and a test turning table disposed in the microwave darkroom and configured to bear a testing piece which is disposed in a quiet zone and exited by a plane electromagnetic wave. The feeding antenna transmits electromagnetic waves to the reflecting surface so as to generate a plane electromagnetic waves or receive electromagnetic waves from the quiet zone.

7. 发明授权

US11417955B2 Antenna device 有权
公开(公告)号：US11417955B2
公开(公告)日：2022-08-16
申请号：US17250502
申请日：2018-08-10
申请人： MORITA TECH CO., LTD.
发明人： Osamu Morita , Akinori Saeki , Kei Okamoto , Satoshi Ogura
IPC分类号： H01Q1/48 , H01Q17/00 , H01Q5/25
摘要： In the antenna device, a first insulating plate, a capacitive coupling portion of a tuning plate, a radio wave absorber, a grounding portion of the tuning plate folded back to the back side of the radio wave absorber, and a tuning coated plate provided with a metallic plated film formed on the surface thereof are sequentially stacked below an antenna element having a shape obtained by removing an arched portion from a copper circular plate. Power is supplied from a center conductor of a semi-rigid signal input member to a power feeding unit of the antenna element. An external conductor is held between the upper and lower conductive cushions. A grounding plate is conductive with the external conductor, to ground the grounding portion and the tuning coated plate.

8. 发明申请

US20220239016A1 ANTENNA MODULE WITH BOARD CONNECTOR 有权
公开(公告)号：US20220239016A1
公开(公告)日：2022-07-28
申请号：US17614979
申请日：2020-06-17
申请人： HUBER+SUHNER AG
发明人： Franz MANSER , Ulf HÜGEL
IPC分类号： H01Q21/26 , H01Q1/24 , H01Q1/38 , H01Q1/50 , H01Q1/52 , H01Q17/00
摘要： An antenna module (1) with a number of antennas (11). Each antenna (11) includes a number of antenna elements and a number of elongated antenna contact elements (112). The antenna contact elements (112) are each configured to establish contact with an associated conductive path of a printed circuit board (2) via a movement of the antennas (11) and the printed circuit board (2) towards each other. The antenna module further includes a shielding with a shielding frame (12) and a shielding cover (15). The shielding frame (12) has a proximal shielding frame end that is configured for mounting on the printed circuit board (2) under circumferential contact. The shielding cover is in circumferential contact with the shielding frame (12). The shielding carrying the number of antennas (11, 11′).

9. 发明授权

US11381002B2 Coating for the concealment of objects from the electromagnetic radiation of antennas 有权
公开(公告)号：US11381002B2
公开(公告)日：2022-07-05
申请号：US16342616
申请日：2017-10-24
申请人： Airbus
发明人： Gérard-Pascal Piau , André De Lustrac , Tatiana Borissov
IPC分类号： H01Q17/00 , H01Q1/32 , H01Q1/38
摘要： An assembly comprising a device and an obstacle subjected to an incident electromagnetic wave of wavelength λ. The obstacle is formed from an electrically conductive material and has a substantially cylindrical shape of transverse dimensions r with respect to a longitudinal axis (O, ez). The longitudinal axis is substantially perpendicular to a propagation direction of the incident electromagnetic wave. The obstacle further has a maximum transverse dimension d such that the ration λ/d is less than 1. The device is placed on all or a part of a surface of the obstacle and comprises a sleeve with a dielectric coating of equivalent relative permittivity EREQ, of height hP along a longitudinal axis of the sleeve, substantially equal to formula A, and a sleeve with an electrically conductive coating placed on the periphery of the dielectric coating.

10. 发明申请

US20220181767A1 ANTENNA COMPONENT AND COMMUNICATION DEVICE 有权
公开(公告)号：US20220181767A1
公开(公告)日：2022-06-09
申请号：US17442184
申请日：2019-11-21
申请人： HuiZhou TCL Mobile Communication Co., Ltd.
发明人： Yi HUANG , Lei CHEN , Wei CHEN , Yibing CHEN
IPC分类号： H01Q1/24 , H01Q1/50 , H01Q17/00 , H01Q23/00
摘要： An antenna component is provided. An orthographic projection of auxiliary antennas on a clearance area is entirely located in, partly located in, or close to a radiation-sensitive area where a specific absorption ratio (SAR) value of a frequency band needs to be reduced, so that a signal emitted from the radiation-sensitive area where the SAR value of the frequency band needs to be reduced on a primary antenna may be absorbed by the auxiliary antennas, and the auxiliary antennas generate secondary radiation.

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