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公开(公告)号：US11849195B1
公开(公告)日：2023-12-19
申请号：US17841453
申请日：2022-06-15
发明人： Arun Pulasseri Kalam
IPC分类号： H04N21/61 , H01Q1/24 , H04N21/45 , H04N21/426 , H01Q19/12
CPC分类号： H04N21/6143 , H01Q1/247 , H04N21/42607 , H04N21/4524 , H01Q19/12
摘要： Methods and apparatuses for improving satellite broadcasting services by enhancing set-top box (STB) signal reception during weather conditions that obstruct the transmission of RF signals from one or more satellites to a receiving antenna (e.g., a dish antenna) are described. To prevent loss of satellite broadcasting services, an enhanced STB signal system may be arranged between the receiving antenna and an STB in order to provide an enhanced signal to the STB in the event that the RF signals received by the receiving antenna are not able to be decoded. The enhanced STB signal system may transmit an enhanced signal to the STB instead of a signal that was only derived from the receiving antenna. The enhanced signal may comprise a combination of signals that derive from other receiving antennas different from the receiving antenna, as well as the signal derived from the receiving antenna.
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公开(公告)号：US11609324B2
公开(公告)日：2023-03-21
申请号：US16889655
申请日：2020-06-01
申请人： Planet Labs Inc.
IPC分类号： G01S13/90 , G01S7/03 , G01S13/10 , H01Q3/26 , H01Q9/04 , H01Q15/14 , H01Q19/10 , H01Q21/06 , H01Q21/29 , G01S7/02 , G01S13/02 , H01Q1/28 , H01Q3/28 , H01Q3/30 , H01Q19/12
摘要： Synthetic aperture radar transmit and receive antenna systems and methods of transmitting and receiving radar signals are disclosed. In one embodiment, a transmit and receive antenna system includes a transmit antenna array configured to transmit a plurality of radio frequency transmit signals, the transmit antenna array including a plurality of patch antenna elements mounted to a printed circuit board, each patch antenna element belonging to a subarray, and one or more power amplifiers, each power amplifier feeding a subarray of the patch antenna elements, and a reflectarray receive antenna configured to receive radio frequency signals including a plurality of reflectarray antenna elements mounted to a printed circuit board, at least one antenna feed configured to receive radio frequency signals reflected from the plurality of reflectarray antenna elements, and at least one low noise amplifier electrically connected to the at least one antenna feed.
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公开(公告)号：US11545738B2
公开(公告)日：2023-01-03
申请号：US17036848
申请日：2020-09-29
摘要： An antenna system for an unmanned aerial vehicle (UAV) includes one or more antennas, a reflector, and a control system. The control system is configured to determine a density of antenna towers near the UAV, determine a position for an active antenna of the one or more antennas based on the density, and adjust the active antenna to the determined position. In some embodiments, the antenna system further includes one or more switches, each of the one or more antennas is a different distance from the reflector, and the switches are used to adjust the active antenna to the determined position by selecting a one of the one or more antennas closest to the determined position as the active antenna. In some embodiments, the antenna system further includes an actuator and the active antenna is moved to the determined position using the actuator.
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公开(公告)号：US11532892B2
公开(公告)日：2022-12-20
申请号：US17497361
申请日：2021-10-08
发明人： I-Ru Liu , Kai-Jia Yeh
IPC分类号： H01Q19/12
摘要： A parabolic antenna includes a main disc, a transmitting device, and a reflecting member. The main disc has a main surface that is arc-shaped. The transmitting device is disposed on the main disc and includes a transmitter and a reflector. The transmitter corresponds to the reflector. The reflector has a reflecting surface that is arc-shaped and corresponds to the main surface of the main disc. The reflecting member is detachably engaged with the reflecting surface of the reflector and corresponds to the transmitter. By engaging the reflecting member with the reflecting surface of the reflector or detaching the reflecting member from the reflecting surface, the parabolic antenna could form various configurations and provide different reflecting performances.
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公开(公告)号：US11483063B2
公开(公告)日：2022-10-25
申请号：US16910195
申请日：2020-06-24
发明人： Thomas Bögl
摘要： A system for providing air traffic control within a geographic sector to which a communication frequency in the VHF or UHF range is assigned comprises at least one satellite (configured for a communication with an aircraft in the geographic sector using an analog modulated RFF signal at the communication frequency. The system is configured in such a way that at each time, only one satellite is actively transmitting on the communication frequency assigned to the geographic sector.
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公开(公告)号：US20220283280A1
公开(公告)日：2022-09-08
申请号：US17664450
申请日：2022-05-23
摘要： Provided is a resin container which contains a cable, the container being provided with: a container main body which has an opening section which opens upward; a lid which closes the opening section; and a first reflection plate which is configured from one or more reflection plates disposed at a prescribed position inside the lid, wherein, in the inside of the container main body, a wireless communication device provided with a first communication unit that communicates with a wireless communication apparatus is disposed, and, when a signal is transmitted from a second communication unit of the wireless communication device in a state where the lid closes the opening section, the first reflection plate is disposed at a position and an angle at which the signal is reflected and is received by the second communication unit.
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公开(公告)号：US20220149537A1
公开(公告)日：2022-05-12
申请号：US17497361
申请日：2021-10-08
发明人： I-RU LIU , KAI-JIA YEH
IPC分类号： H01Q19/12
摘要： A parabolic antenna includes a main disc, a transmitting device, and a reflecting member. The main disc has a main surface that is arc-shaped. The transmitting device is disposed on the main disc and includes a transmitter and a reflector. The transmitter corresponds to the reflector. The reflector has a reflecting surface that is arc-shaped and corresponds to the main surface of the main disc. The reflecting member is detachably engaged with the reflecting surface of the reflector and corresponds to the transmitter. By engaging the reflecting member with the reflecting surface of the reflector or detaching the reflecting member from the reflecting surface, the parabolic antenna could form various configurations and provide different reflecting performances.
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公开(公告)号：US10476611B2
公开(公告)日：2019-11-12
申请号：US15858722
申请日：2017-12-29
发明人： Corbett Rowell , Benoit Derat
IPC分类号： H04B17/00 , H04B17/12 , H01Q15/14 , H01Q19/12 , H04B7/0413
摘要： A reflector for deflecting electromagnetic waves is provided. Said reflector comprises a resistive material along its edges in a specific pattern, wherein the resistive material has a resistance per square meter being higher than the resistance per square meter of the material of the reflector in order to attenuate and/or absorb electromagnetic energy of the electromagnetic waves.
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公开(公告)号：US10050338B1
公开(公告)日：2018-08-14
申请号：US15158889
申请日：2016-05-19
发明人： James P. O'Loughlin
摘要： Concentric shapes (e.g., discs and rings), are nested and displaced from a central plate. The discs are individually positioned by means of mechanical or electro-mechanical actuators such that the over-all result approximates a spherical surface reflector antenna having an adjustable radius of curvature, with the radii of curvature being equivalent to the focal length of the antenna. Another innovation includes reducing the dimensional positioning of the various discs by a modulo of the wavelength of the operating frequency of the antenna, thus reducing the throw accommodation of the actuators to only one wavelength. Each of the discs and the central plate are designed to have substantially the same area, as a nominal configuration. The accuracy of the approximation is improved as the number of discs is increased; however, very acceptable performance is obtained with as few as ten discs when compared to a perfect spherical surface.
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公开(公告)号：US09806429B2
公开(公告)日：2017-10-31
申请号：US14204296
申请日：2014-03-11
申请人： John Russell Wilbur
发明人： John Russell Wilbur
CPC分类号： H01Q19/12 , H01Q1/1207 , H01Q3/02 , H01Q15/16
摘要： A signal enhancer has a framework, a concave reflector having an axis of reflection, joined to the framework in a manner that direction of the axis of the reflector may be varied, and a support a cellular telephone joined to the axis in a manner that a cellular telephone may be placed and held in the support at different distances from the reflector along the axis of the reflector.
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