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公开(公告)号：US11637374B2
公开(公告)日：2023-04-25
申请号：US16876180
申请日：2020-05-18
发明人： Yang-Ki Hong , Woncheol Lee , Hoyun Won
摘要： In an aspect, the disclosed technology relates to embodiments of a lossy ferrite-core and dielectric-shell (LFC-DS) structure in an axial-mode helical antenna (AM-HA) or a meandered dipole antennas. The instant topology can be used to facilitates the broader use of ferrite materials, including lossy ferrite material, for a miniature AM-HA or meandered dipole antennas, e.g., by overcoming the lossy characteristics of the lossy ferrite. The resulting miniature AM-HA can be used for high frequency operation, including at over 1 GHz, making the instant topology suitable for very high frequency (VHF) and ultra-high Frequency (UHF) applications.
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公开(公告)号：US11600926B2
公开(公告)日：2023-03-07
申请号：US16419568
申请日：2019-05-22
发明人： Francis E. Parsche
摘要： An eLORAN receiver may include an antenna and eLORAN receiver circuitry coupled to the antenna. The antenna may have a ferromagnetic core including a ferromagnetic medial portion and ferromagnetic arms extending outwardly from the ferromagnetic medial portion, a respective electrically conductive winding surrounding each of the ferromagnetic arms, and an electrically conductive patch element adjacent the ferromagnetic core.
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公开(公告)号：US11569577B2
公开(公告)日：2023-01-31
申请号：US16963961
申请日：2019-01-29
申请人： LG INNOTEK CO., LTD.
发明人： In Seong Sohn , Dong Hyeok Choi
摘要： An antenna module according to one embodiment of the present invention, comprises: a coil layer including a wound first coil; a shield layer disposed on the coil layer and including a plurality of sequentially stacked magnetic sheets; and a protection layer disposed on the shield layer, wherein the thickness of an edge of the shield layer is greater than the thickness of the center of the shield layer, and the total separation distance between the plurality of magnetic sheets at the edge of the shield layer is greater than the total separation distance between the plurality of magnetic sheets at the center of the shield layer.
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公开(公告)号：US20230013250A1
公开(公告)日：2023-01-19
申请号：US17786606
申请日：2020-11-23
摘要： The present disclosure relates to a lighting technology device, comprising a controller, a memory functionally connected to the controller, and an NFC antenna integrated in a casing or arranged on a board carrying the controller and the memory, wherein the antenna comprises two planar antenna wing elements arranged at an angle between 80° and 100°, preferably 85° to 95° with respect to each other, and wherein the controller is configured to process NFC data received from the antenna and store in said memory said data for programming the lighting technology device.
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公开(公告)号：US20220390644A1
公开(公告)日：2022-12-08
申请号：US17835806
申请日：2022-06-08
申请人： ROBERT ALFANO
发明人： ROBERT ALFANO
摘要： The focus of the teachings is on using Compact ferrite antenna to detect the motion of metal objects using a very low frequency (VLF) square wave, propagated between a pair of compact ferrite-particle dielectric-core RWA antennas in free space. The two salient features in the signal are observed; both of which are characteristic of Brillouin-precursor propagation: (1) a temporal Bessel-like waveform; and (2) an algebraic, rather than exponential, attenuation with distance over three meters. The key element teaching shows pair of source and detector antenna enables the detection of metals (weapon gun, knife) on a person or package between the ferrite- particle dielectric-core antennas- source (S) and detector (D) pairs or arrays of S-D tractor. The detection consisted of a change in the amplitude of the Bessel-like waveform of the received signal for security system to detect weapons.
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公开(公告)号：US20220344820A1
公开(公告)日：2022-10-27
申请号：US17640829
申请日：2020-06-17
发明人： Xiaoming Fan
摘要： The invention provides a signal isolation and transmission device, comprising a high-frequency amplitude modulation circuit, a signal demodulation circuit, a first H-field antenna and a second H-field antenna. The first H-field antenna and second H-field antenna are both loop antennas with an external conductive shielding layer, and an insulating layer is wrapped outside the conductive shielding layer. The annular parts of the first H-field antenna and second H-field antenna face and abut each other. The high-frequency amplitude modulation circuit is connected with a pin of the first H-field antenna, and a pin of the second H-field antenna is connected with the signal demodulation circuit. The signal to be tested is modulated onto a high-frequency carrier signal by the high-frequency amplitude modulation circuit, and then isolated and transmitted by the two H-field antennas, which greatly improves the anti-interference effect, reduces the attenuation degree and improves the coupling degree of the signals.
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公开(公告)号：US11431090B2
公开(公告)日：2022-08-30
申请号：US16985795
申请日：2020-08-05
申请人： Tom Lavedas
发明人： Tom Lavedas
摘要： A sensor probe with reduced coupling between the various antenna elements and suppression of radio frequency interference. In one embodiment the sensor probe comprises a first antenna and a second antenna. A first and a second decoupling loop is electrically connected to one of the first and second antennas with current flow in opposite directions in the first and second decoupling loops. A third decoupling loop is electrically connected to another one of the first and second antennas and physically disposed between the first and second decoupling loops. Coupling between the first and second antennas is responsive to a location of the third decoupling loop relative to the first and second decoupling loops.
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公开(公告)号：US11183762B2
公开(公告)日：2021-11-23
申请号：US16548105
申请日：2019-08-22
申请人： SIVANTOS PTE. LTD.
发明人： Johannes Kuhn , Peter Nikles
摘要： A magnetic-inductive antenna for a hearing instrument includes two antenna surfaces which are formed from magnetic, flexible foil, and a base which is wound with an antenna winding. The antenna surfaces are formed from magnetic foil blanks which are separated from one another. The base has, at each of its end sides, a respective opening into which a respective one of the foil blanks is inserted. A hearing instrument and a method for producing a magnetic-inductive antenna for a hearing instrument are also provided.
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公开(公告)号：US20210344227A1
公开(公告)日：2021-11-04
申请号：US16863703
申请日：2020-04-30
申请人： NuCurrent, Inc.
发明人： Andrew Kovacs , Mark Melone , Md Nazmul Alam
摘要： A power transmitter for wireless power transfer at extended distances is configured for vehicular utilization. The power transmitter includes vehicular power input regulator configured for receiving input power and filtering the input power to a filtered input power, the vehicular power input regulator including an input protection circuit and a DC/DC voltage converter. The power transmitter further includes a control and communications circuit and an inverter circuit. The power transmitter further includes a coil for transmitting the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, each of the at least one layer having N turns, the coil defining, at least a top face and a shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.
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公开(公告)号：US20210143550A1
公开(公告)日：2021-05-13
申请号：US16621348
申请日：2018-06-07
申请人： HITACHI METALS, LTD.
发明人： Hiroki YAMAMOTO , Tomoyuki TADA , Satoru TANAKA
摘要： A coil device comprising a coil, and a ferrite core arranged in a hollow portion of the coil, and a resin covering them; the ferrite core being a Ni ferrite core having initial permeability μi of 450 or more at a frequency of 100 kHz and a temperature of 20° C., and an average crystal grain size of 5-9 μm, both of temperature-dependent inductance change ratios TLa and TLb and stress-dependent inductance change ratios PLa and PLb being −0.6% to +0.6%, and both of the sum of TLa and PLa and the sum of TLb and PLb being more than −1.0% and less than +1.0%; and an antenna comprising it.
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