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公开(公告)号：US11095009B2
公开(公告)日：2021-08-17
申请号：US16870609
申请日：2020-05-08
申请人： VIASAT, INC.
发明人： Anders Jensen , John D. Voss , Donald L. Runyon
摘要： In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.
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公开(公告)号：US10998623B2
公开(公告)日：2021-05-04
申请号：US16598672
申请日：2019-10-10
申请人： Viasat, Inc.
摘要： In one embodiment, an antenna assembly is described. The antenna assembly includes an antenna and an antenna positioner coupled to the antenna. The antenna positioner includes a single drive interface and a plurality of gears. The plurality rotate in a first manner in response to a first drive direction applied through the single drive interface, and rotate in a second manner in response to a second drive applied through the single drive interface. The antenna positioner also includes a threaded rod that moves in a first rod direction and a second rod direction in response to rotation of the plurality of gears in the first manner and the second manner respectively. The antenna positioner also includes a tilt plate contacting the threaded rod. The tilt plate tilts about a pivot line in response to movement of the threaded rod to move a beam of the antenna in a spiral pattern.
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公开(公告)号：US10903580B2
公开(公告)日：2021-01-26
申请号：US16808952
申请日：2020-03-04
申请人： VIASAT, INC
发明人： Anders Jensen , Donald L. Runyon
摘要： An antenna includes a reflector and a waveguide assembly. The waveguide assembly includes a feed assembly and a support member that extends from behind the reflector to orient the feed assembly for direct illumination of the reflector. The waveguide assembly includes a first waveguide coupled to a first portion of a common waveguide, a second waveguide coupled to a second portion of the common waveguide, and a septum layer that includes a septum polarizer coupled between the common waveguide and the first and second waveguides.
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公开(公告)号：US20200259250A1
公开(公告)日：2020-08-13
申请号：US16847783
申请日：2020-04-14
申请人： Viasat, Inc.
IPC分类号： H01Q1/28 , H04B7/185 , H04B7/195 , H04B7/08 , H01Q21/28 , H01Q3/02 , H01Q1/42 , H04B7/06 , H01Q21/06 , H01Q3/08 , H01Q3/24
摘要： In one example, an antenna system is described. The antenna system includes a primary antenna on an aircraft. The primary antenna is mechanically steerable and has an asymmetric antenna beam pattern with a narrow beamwidth axis and a wide beamwidth axis at boresight. The antenna system also includes a secondary antenna on the aircraft, the secondary antenna including an array of antenna elements. The antenna system also includes an antenna selection system to control communication of a signal between the aircraft and a target satellite via the primary antenna and the secondary antenna. The antenna selection system switches communication of the signal from the primary antenna to the secondary antenna when a performance characteristic for communication with the target satellite satisfies a threshold due to a position of the aircraft relative to the target satellite.
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公开(公告)号：US20200185807A1
公开(公告)日：2020-06-11
申请号：US16706051
申请日：2019-12-06
申请人： Viasat, Inc.
摘要： In an example embodiment, an azimuth combiner comprises: a septum layer comprising a plurality of septum dividers; first and second housing layers attached to first and second sides of the septum layer; a linear array of ports on a first end of the combiner; wherein the first and second housing layers each comprise waveguide H-plane T-junctions; wherein the waveguide T-junctions can be configured to perform power dividing/combining; and wherein the septum layer evenly bisects each port of the linear array of ports. A stack of such azimuth combiners can form a two dimensional planar array of ports to which can be added a horn aperture layer, and a grid layer, to form a dual-polarized, dual-BFN, dual-band antenna array.
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公开(公告)号：US20200006859A1
公开(公告)日：2020-01-02
申请号：US16504669
申请日：2019-07-08
申请人： Viasat, Inc.
摘要： A waveguide architecture for a dual-polarized antenna including multiple antenna elements. Aspects are directed to dual-polarized antenna architectures where each antenna element includes a polarizer having an individual waveguide with dual-polarization signal propagation and divided waveguides associated with each basis polarization. The waveguide architecture may include unit cells having corporate waveguide networks associated with each basis polarization connecting each divided waveguide of the polarizers of each antenna element in the unit cell with a respective common waveguide. The waveguide networks may have waveguide elements located within the unit-cell boundary with a small or minimized inter-element distance. Thus, unit cells may be positioned adjacent to each other in a waveguide device assembly for a dual-polarized antenna array without increased inter-element distance between antenna elements of adjacent unit cells. Antenna waveguide ports may be connected to unit cell common waveguides using elevation and azimuth waveguide networks of the corporate type.
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公开(公告)号：US10389035B2
公开(公告)日：2019-08-20
申请号：US15845780
申请日：2017-12-18
申请人： ViaSat, Inc.
摘要： A waveguide architecture for a dual-polarized antenna including multiple antenna elements. Aspects are directed to dual-polarized antenna architectures where each antenna element includes a polarizer having an individual waveguide with dual-polarization signal propagation and divided waveguides associated with each basis polarization. The waveguide architecture may include unit cells having corporate waveguide networks associated with each basis polarization connecting each divided waveguide of the polarizers of each antenna element in the unit cell with a respective common waveguide. The waveguide networks may have waveguide elements located within the unit-cell boundary with a small or minimized inter-element distance. Thus, unit cells may be positioned adjacent to each other in a waveguide device assembly for a dual-polarized antenna array without increased inter-element distance between antenna elements of adjacent unit cells. Antenna waveguide ports may be connected to unit cell common waveguides using elevation and azimuth waveguide networks of the corporate type.
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公开(公告)号：US10211911B2
公开(公告)日：2019-02-19
申请号：US16055703
申请日：2018-08-06
申请人： ViaSat, Inc.
IPC分类号： H04B7/185 , H04B7/06 , H04W84/06 , H01Q25/00 , H01Q21/24 , H01Q19/13 , H04B7/204 , H04W40/20 , H04W16/28 , H01Q1/28 , H01Q3/24 , H04W76/10 , H01Q3/40 , H04B10/118 , H01Q5/50 , H01Q1/06 , H01Q21/00 , H04W16/26 , H01Q1/24
摘要： Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.
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公开(公告)号：US09571183B2
公开(公告)日：2017-02-14
申请号：US14754904
申请日：2015-06-30
申请人： ViaSat, Inc.
发明人： Donald L. Runyon , Sharad V. Parekh
CPC分类号： H04B7/18513 , H01P1/173 , H01Q1/1264 , H01Q1/288 , H01Q1/421 , H01Q13/0258 , H01Q21/245
摘要： The described technology uses a dual circularly polarized panel antenna and equal amplitude variable phase control between the two circularly polarized components to achieve a rotatable linear polarization tracking system. An example antenna system includes a plurality of antenna elements that include a plurality of polarization transducers to generate a first signal component and a second signal component from a received wave. A polarization control network applies a phase difference based on an orientation of the linear polarization of the wave with respect to the antenna system between the signal components to generate adjusted signal components. The polarization control network combines the adjusted signal components to form a composite signal that corresponds to the linear polarization of the wave. Linearly polarized transmit and receive signals may be co-polarized or cross-polarized.
摘要翻译： 所描述的技术使用双圆偏振面板天线和两个圆偏振分量之间的等幅度可变相位控制，以实现可旋转的线性偏振跟踪系统。 示例性天线系统包括多个天线元件，其包括多个极化换能器以从接收波产生第一信号分量和第二信号分量。 偏振控制网络基于相对于信号分量之间的天线系统的波的线性偏振的取向来施加相位差，以产生经调整的信号分量。 偏振控制网络将经调整的信号分量组合以形成对应于波的线偏振的复合信号。 线偏振的发射和接收信号可以是共极化的或交叉极化的。
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公开(公告)号：US20240322900A1
公开(公告)日：2024-09-26
申请号：US18616395
申请日：2024-03-26
申请人： ViaSat, Inc.
IPC分类号： H04B7/185 , H01Q1/06 , H01Q1/24 , H01Q1/28 , H01Q3/24 , H01Q3/40 , H01Q5/50 , H01Q19/13 , H01Q21/00 , H01Q21/24 , H01Q25/00 , H04B7/024 , H04B7/0413 , H04B7/06 , H04B7/204 , H04B10/118 , H04W4/00 , H04W16/26 , H04W16/28 , H04W40/20 , H04W76/10 , H04W84/06
CPC分类号： H04B7/18513 , H01Q1/06 , H01Q1/288 , H01Q3/247 , H01Q3/40 , H01Q5/50 , H01Q19/132 , H01Q21/0025 , H01Q21/24 , H01Q25/001 , H04B7/024 , H04B7/0413 , H04B7/0617 , H04B7/18508 , H04B7/18515 , H04B7/18517 , H04B7/18534 , H04B7/1858 , H04B7/18586 , H04B7/18589 , H04B7/204 , H04B7/2041 , H04B10/118 , H04W4/00 , H04W16/28 , H04W40/20 , H04W76/10 , H04W84/06 , H01Q1/247 , H04W16/26
摘要： Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.
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