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公开(公告)号：US20240356205A1
公开(公告)日：2024-10-24
申请号：US18668707
申请日：2024-05-20
申请人： Viasat, Inc.
CPC分类号： H01Q1/288 , H01Q19/17 , H04B7/0851
摘要： An antenna system of a satellite may consist of an antenna receiver that is coupled to a plurality of flexible couplings. The couplings may each be affixed to one or more antenna elements. The couplings may be deployed in space in an uncontrolled manner. Additionally, the spacing between the couplings, and in turn the antenna elements, may be spaced in an uncontrolled manner. The antenna elements may have no pointing requirements. The antenna system may receive training signals and associate an antenna element to a time of arrival based on the training signal. Upon receiving a data signal, the antenna system may apply coefficients determined from the association of the antenna element to the time of arrival to the data signal to discover wanted signal coherence among the antenna elements.
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公开(公告)号：US20240313418A1
公开(公告)日：2024-09-19
申请号：US18606423
申请日：2024-03-15
摘要： Self-deploying reflector array architectures include stacked multiple panels attached to a central panel by sets of heat actuated flexible hinges on their non-functional sides create surface of revolution, cylindrical and flat reflector arrays in accordance with panel curvature. Robotic in-space assembly of multiple smaller arrays allows for creation of reflector array of 10 or more meters to support S-band and above RF (≥2 GHz) transmission.
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公开(公告)号：US20240305015A1
公开(公告)日：2024-09-12
申请号：US18258428
申请日：2021-12-21
发明人： Marco FORMAGGI
摘要： It is disclosed a waveguide array antenna for satellite communications. The antenna is configured to transmit and/or receive a first polarization signal and a second polarization signal, the second polarization being orthogonal to the first polarization, and comprises an array of unit cells, each comprising a radiating element. The antenna comprises: a grid configured to divide each radiating element into sub-elements having an inter-element distance lower than or equal to the wavelength at a highest frequency of operation of the antenna; and an electromagnetic band gap layer configured to support the grid above the radiating elements. The grid comprises a number of grid unit portions, and the electromagnetic band gap layer consists of a number of pins protruding from the walls of each grid unit portion.
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公开(公告)号：US12088016B2
公开(公告)日：2024-09-10
申请号：US18463763
申请日：2023-09-08
申请人： ViaSat, Inc.
IPC分类号： H04B7/10 , H01Q1/27 , H01Q1/28 , H01Q3/26 , H01Q3/28 , H01Q3/30 , H01Q3/36 , H01Q15/24 , H01Q21/22 , H01Q21/24 , H04B7/0408 , H04B7/15 , H04B7/185 , H04W72/0453 , H04W72/21 , H04W72/23
CPC分类号： H01Q21/22 , H01Q1/27 , H01Q1/288 , H01Q3/26 , H01Q3/36 , H01Q15/242 , H04B7/0408 , H04B7/10 , H04B7/18515 , H04B7/1858 , H04B7/18593 , H04W72/0453 , H04W72/21 , H04W72/23
摘要： In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.
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公开(公告)号：US20240297442A1
公开(公告)日：2024-09-05
申请号：US18432664
申请日：2024-02-05
申请人： VIASAT, INC.
CPC分类号： H01Q15/006 , H01Q1/288 , H01Q21/26
摘要： An artificial magnetic conductor (AMC) antenna apparatus includes a ground plane and a flexible antenna element layer above the ground plane. The ground plane includes a conductive base surface, a plurality of memory metal wires, and a frequency selective surface (FSS) layer above the base surface, where the FSS layer includes a plurality of conductive patches separated from one another. Each of the memory metal wires electrically connects one of the conductive patches to the base surface. Each of the memory metal wires is rigid in a memory-shaped state, causing the FSS layer to be fixedly spaced from the base surface during operation of the AMC antenna apparatus. The memory metal wires are each flexible in a non-memory-shaped state, enabling the FSS layer to be collapsed towards the base surface when the antenna apparatus is stowed.
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公开(公告)号：US20240275071A1
公开(公告)日：2024-08-15
申请号：US18626902
申请日：2024-04-04
申请人： Blue Digs LLC
发明人： Chris Cosner , Ying Feria , Raenaurd Turpin , Andre Houle , Richard Aston , Brett Cope , Ricardo Leon
CPC分类号： H01Q21/0018 , B64G1/641 , H01Q1/288 , H01Q5/42 , H01Q5/50 , B64G1/643 , H01Q1/08 , H04B7/18513 , H04B7/18515
摘要： A satellite system can include one or more satellites that orbit the Earth. The one or more satellites may have satellite buses that support antenna arrays. The antenna arrays may include space fed arrays. Each space fed array may have an antenna feed array and an inner array that is coupled to a direct radiating array. The direct radiating array may operate in the same satellite band as the space fed array, or upconversion and downconversion circuitry may be used to communicatively couple a direct radiating array that operates in a different satellite band to the space fed array. The satellites may have peripheral walls with corner fittings that can be selected to provide the satellite bus with particular leg strengths. This can reduce overall mass of the satellites in a payload fairing while accommodating different types of antenna arrays.
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公开(公告)号：US20240275062A1
公开(公告)日：2024-08-15
申请号：US18169570
申请日：2023-02-15
发明人： Rifaqat HUSSAIN
CPC分类号： H01Q13/103 , H01Q1/288 , H01Q1/48 , H01Q5/307 , H01Q13/106
摘要： A frequency reconfigurable (FR) slot-based UHF antenna for use in Cube-Sat is described. The antenna includes a dielectric circuit board, a metallic layer, a meandered slot line formed in the metallic layer, a feed horn is connected to a first edge of the circuit board, a reverse biased varactor diode, a ground terminal connected to the metallic layer and a biasing circuit configured to bias the reverse biased varactor diode. The biasing circuit causes the antenna to resonate in a frequency range of 300 MHz to 450 MHz. The meandered slot line includes a heptagonal path connected to and enclosing a rectangular path. An open end of the feed horn is directed towards the apex of the heptagonal path. The reverse biased varactor diode is connected to the metallic layer across the rectangular path and parallel to a central axis.
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公开(公告)号：US12046831B1
公开(公告)日：2024-07-23
申请号：US17543060
申请日：2021-12-06
申请人： AST & Science, LLC
发明人： Sriram Jayasimha , Huiwen Yao
CPC分类号： H01Q3/30 , H01Q1/288 , H01Q9/0407
摘要： A phased array has a plurality of antenna element structures each having a planar surface. The antenna element structures are connected to form a structural array with a planar array surface. A processing device generates a beam having a beam phase at the plurality of antenna element structures, monitors and determines in real time for structural displacement of the plurality of structures, determines a correction, and adjusts the beam phase based on the correction.
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公开(公告)号：US12027762B2
公开(公告)日：2024-07-02
申请号：US17650574
申请日：2022-02-10
发明人： Francis E. Parsche
摘要： A communications device includes an RF device, and an antenna coupled to the RF device. The antenna includes a conductive ground plane, an elongate support extending from the conductive ground plane, a helically wound conductive strip carried by a proximal end of the elongate support, and spaced apart conductive elements carried by a distal end of the elongate support to define an RF lens for the helically wound conductive strip.
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公开(公告)号：US11984966B2
公开(公告)日：2024-05-14
申请号：US17509579
申请日：2021-10-25
申请人： Maxar Space LLC
发明人： Seyed Tabatabaei , Jim Sowers , Ghislain Turgeon
CPC分类号： H04B7/18515 , H01Q1/288 , H03F1/0288 , H03F3/195 , H03F3/245 , H04B1/04 , H04B1/0458 , H04B1/0483 , H04B1/18 , H03F2200/451 , H04B2001/045
摘要： A solid state power amplifier uses a Doherty power amplifier that can be implemented as a monolithic microwave integrated circuit. By adjusting the DC bias of the amplifying stages in each branch of the Doherty amplifier, the output power, linearity, and DC power can be adjusted to provide a specified output, where the specification for the output can include the maintaining of desired DC power and linearity. The Doherty power amplifier can be used in a satellite payload or other application utilizing solid state power amplifiers, while providing the proper amount of RF output power and DC power. A single amplifier can have its bias levels adjusted for different output levels, helping to minimize the number of designs that are required for a given satellite payload, reducing the variety of parts in a satellite payload.
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