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公开(公告)号：US12126084B2
公开(公告)日：2024-10-22
申请号：US17413724
申请日：2019-12-25
Applicant: SEKISUI CHEMICAL CO., LTD.
Inventor： Katsunori Mutou , Sachiko Nakao , Hideki Hayashi
IPC: H01Q17/00
CPC classification number: H01Q17/00
Abstract: An object of the present invention is to provide a radio wave absorber that has excellent radio wave absorption against oblique incidence, particularly against oblique incidence of radio waves at around 60 GHz. The object can be achieved by a radio wave absorber that has an absorption range with absorption performance of 15 dB or more within the frequency band of 55 to 65 GHz of 4 GHz or more in a circular polarization measurement at 45° incidence.
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公开(公告)号：US12126080B2
公开(公告)日：2024-10-22
申请号：US18045828
申请日：2022-10-11
Applicant: HL Klemove Corp.
Inventor： Hyunseok Lee , Sung Joon Heo
Abstract: An antenna module is provided. According to an aspect of the present disclosure, an antenna module attached to a support surface provided in a vehicle radar sensor to transmit and receive radio waves may include an antenna body in which one surface is stacked on the support surface; a through path formed inside the antenna body and extending in one direction; at least one slot formed through the through path toward the other surface of the antenna body and extending in the one direction; and a first radio wave absorbing member extending in the one direction and disposed parallel to opposite sides of the through path.
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公开(公告)号：US20240154318A1
公开(公告)日：2024-05-09
申请号：US18540057
申请日：2023-12-14
Applicant: Mitsubishi Chemical Corporation
Inventor： Shuta ISEKI , Hidekazu SHOJI
IPC: H01Q17/00 , B23K26/21 , B23K103/00 , C08K3/04 , G01S7/02
CPC classification number: H01Q17/00 , B23K26/21 , C08K3/041 , G01S7/027 , B23K2103/42 , C08K2201/001
Abstract: A structure contains a first member formed from a thermoplastic resin composition A and a second member formed from a thermoplastic resin composition B, the first member and the second member being joined at least partially, wherein the thermoplastic resin composition A molded into a molding with a thickness of 2 mm has a transmittance of 70.0% or more at a frequency of 76.5 GHz; the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has a transmittance of less than 50.0% at a frequency of 76.5 GHz; and the thermoplastic resin composition B molded into a molding with a thickness of 2 mm has an absorbance of 40.0% or more at a frequency of 76.5 GHz:
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公开(公告)号：US11924963B2
公开(公告)日：2024-03-05
申请号：US17649875
申请日：2022-02-03
Applicant: Raytheon Company
Inventor： David D. Crouch , Jennifer Marie de la Barrera
CPC classification number: H05K1/0216 , H01P1/365 , H01Q1/38 , H01Q1/48 , H01Q1/525 , H01Q17/00 , H05K1/0206 , H05K3/4644 , H05K2201/10098
Abstract: An apparatus includes an isolation barrier configured to absorb electromagnetic energy. The isolation barrier includes multiple layers stacked on one another. Each of the multiple layers includes at least one dielectric material, at least one thin-film resistive material carried by the at least one dielectric material, and conductive strips in electrical contact with the at least one thin-film resistive material. The isolation barrier also includes vias through the multiple layers. Multiple ones of the vias are positioned along each of the conductive strips, and the vias electrically couple the conductive strips in the multiple layers to one another. The isolation barrier is configured to guide the electromagnetic energy through the multiple layers to enable absorption of the electromagnetic energy by the at least one thin-film resistive material.
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公开(公告)号：US20230360828A1
公开(公告)日：2023-11-09
申请号：US18353428
申请日：2023-07-17
Applicant: FUJIFILM Corporation
Inventor： Kiyotaka FUKAGAWA
CPC classification number: H01F1/344 , H01Q17/00 , C01G49/0045 , H05K9/0075 , C01P2004/22 , C01P2004/61 , C01P2006/90 , C01P2002/72 , C01P2004/03
Abstract: The magnetic powder for a radio wave absorber is a powder of a hexagonal ferrite having a composition represented by Formula 1, a region B is present on the particle surface of the powder, and Expression 2: 0.3≤content of A atom in region B/content of Al atom in region B≤23.0 and Expression 3: 1.2≤total of content of A atom and content of Al atom in region B/total of content of A atom and content of Al atom in entire powder≤2.5 are satisfied. The region B is a region that is observed as a bright region having a long side diameter of 0.1 μm to 0.6 μm in an image subjected to binarization processing. A represents one or more kinds of atoms (A atom) selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 0.10≤x≤5.00.
AFe(12-x)AlxO19 (Formula 1)-
Patent Agency Ranking
公开(公告)号：US20230327321A1
公开(公告)日：2023-10-12
申请号：US18021022
申请日：2021-09-24
Applicant: Sumitomo Electric Industries, Ltd.
Inventor： Masami SEKIGUCHI , Manabu SHIOZAKI
Abstract: A reflection unit of this disclosure is a reflection unit installed in a wireless transmission path between a first wireless device configured to at least transmit a wireless communication signal and a second wireless device configured to at least receive the wireless communication signal, in order to change a direction of the wireless transmission path. The reflection unit includes a plurality of reflectors configured to reflect the wireless communication signal. The plurality of reflectors include at least one reflectarray reflector.
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公开(公告)号：US20230187974A1
公开(公告)日：2023-06-15
申请号：US17882791
申请日：2022-08-08
Applicant: UTC Fire & Security Corporation
Inventor： Christopher C. Fuller , Edward Goff
CPC classification number: H02J50/23 , H02J50/70 , H02J50/27 , H01Q7/00 , H01Q15/02 , H01Q19/062 , H01Q11/08 , H01Q19/06 , H01Q17/00
Abstract: A system for providing wireless power transfer includes a primary antenna having a primary lens surrounding the primary antenna and a secondary antenna having a secondary lens surrounding the secondary antenna. The secondary antenna is operatively connected to power at least one sensor. A mains power source is operatively connected to power the primary antenna. The primary and secondary antennas are separated a distance apart to wirelessly transfer power from the primary antenna to the secondary antenna.
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公开(公告)号：US10085370B2
公开(公告)日：2018-09-25
申请号：US14216800
申请日：2014-03-17
Applicant: Flextronics AP, LLC
Inventor： Peter Suorsa
CPC classification number: H05K9/0088 , G02B2207/121 , H01Q17/00 , H01Q17/002 , H05K1/0233 , H05K1/0236 , H05K1/024 , H05K2201/083 , Y10T29/49018 , Y10T156/1002
Abstract: A method for producing a magnetic resonant frequency (MRF) absorber and apparatus for an MRF absorber are described herein. The method comprises processing a high permeability material such as permalloy comprising 80% nickel, 18% iron, 2% molybdenum to create a specific geometric form factor such as a flake, sphere, or rod. The geometric form factor may then be encapsulated in an insulating matrix. The insulating matrix may be a Potassium Silicate (SiO3K2). The insulated flake, sphere, or rod form factor may be introduced to a powder coating process. The insulated flake, sphere, or rod form factor may then be mixed with a polymeric coating powder at a weight ratio based on a desired performance for absorbing electromagnetic interference (EMI).
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公开(公告)号：US10054623B2
公开(公告)日：2018-08-21
申请号：US14234359
申请日：2012-07-19
Applicant: Eric Estebe , Pierre Levy , Alain Bouedo
Inventor： Eric Estebe , Pierre Levy , Alain Bouedo
CPC classification number: G01R29/105 , G01R29/10 , G01S7/4026 , G01S2007/4086 , H01Q3/267 , H01Q17/00
Abstract: A device includes a test enclosure defining a cavity forming an anechoic chamber, having a test probe placed inside the cavity. The cavity comprises an aperture against which the radiating surface of antenna is positioned. The device includes a microwave-frequency test signal generator and a receiver for microwave-frequency signal emitted by the antenna under test and for measuring its amplitude and its phase in relation to a reference. Depending on the depth of the cavity and the dimensions of the radiation pattern of a test probe, the device comprises one or more test probes placed in fixed positions in the cavity or a mobile probe that can be positioned in various locations of the cavity, the probe or probes being configured and arranged to illuminate the whole active surface of the antenna and that the radiation pattern of each radiating element illuminates at least one test probe.
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公开(公告)号：US09961812B2
公开(公告)日：2018-05-01
申请号：US14216768
申请日：2014-03-17
Applicant: Flextronics AP, LLC
Inventor： Peter Suorsa
CPC classification number: H05K9/0088 , G02B2207/121 , H01Q17/00 , H01Q17/002 , H05K1/0233 , H05K1/0236 , H05K1/024 , H05K2201/083 , Y10T29/49018 , Y10T156/1002
Abstract: A method and apparatus for producing a radio frequency absorber (RFA) or perfect microwave absorber (PMA) skin is described herein. A metamaterial layer may be applied to a low dielectric substrate. Resistive and capacitive components may then be added to the metamaterial layer. The metamaterial layer may then be formed into an RFA or PMA skin, which may then be applied to a multi-layered assembly for absorption of electromagnetic radiation in a frequency range such as the microwave frequency spectrum in a final product including but limited to cell phones, communication devices, or other electronic devices.
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