-
公开(公告)号：US10741930B2
公开(公告)日：2020-08-11
申请号：US16404578
申请日：2019-05-06
申请人： VIASAT, INC.
摘要： Disclosed is a shaped horn in conjunction with a dielectric tube for enhanced aperture directivity that can achieve a near optimum efficiency. The shaped horn provides additional mode control to provide an improved off-axis cross-polarization response. The horn shape can be individually optimized for isolated horns or for horns in a feed array. The feed array environment can produce results that lead to a different optimized shape than the isolated horn. Lower off axis cross-polarization can result in improved efficiency and susceptibility to interference.
-
公开(公告)号：US10686235B2
公开(公告)日：2020-06-16
申请号：US16269907
申请日：2019-02-07
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.
-
公开(公告)号：US10326210B2
公开(公告)日：2019-06-18
申请号：US15806181
申请日：2017-11-07
申请人： VIASAT, INC.
摘要： Disclosed is a shaped horn in conjunction with a dielectric tube for enhanced aperture directivity that can achieve a near optimum efficiency. The shaped horn provides additional mode control to provide an improved off-axis cross-polarization response. The horn shape can be individually optimized for isolated horns or for horns in a feed array. The feed array environment can produce results that lead to a different optimized shape than the isolated horn. Lower off axis cross-polarization can result in improved efficiency and susceptibility to interference.
-
公开(公告)号：US11165151B2
公开(公告)日：2021-11-02
申请号：US16403439
申请日：2019-05-03
申请人： VIASAT, INC.
发明人： Donald L Runyon
摘要： Systems, devices, and methods for determining and applying true time delay (TTD) values for compensating for free-space path length differences between a phased array and a reflector in wideband communication are disclosed. TTD values are determined for individual and groups of antenna elements in phased array fed reflector (PAFR) antennas based distances from a focal region of the reflector. The distance from the focal region of the reflector and the offset of the phased array from the reflectors focal plane can be used to determine path length differences. Corresponding TTD values for antenna elements are then determined based on the path length difference associated with the antenna elements. Each antenna element can be coupled to a TTD element to provide the corresponding TTD value to the signals received by and generated by the antenna elements of the phased array. The TTD elements include transverse electromagnetic (TEM) mode mechanisms.
-
公开(公告)号：US10096906B2
公开(公告)日：2018-10-09
申请号：US15059214
申请日：2016-03-02
申请人： VIASAT, INC.
发明人： Anders Jensen , Donald L Runyon
摘要： An antenna may include a reflector and a multi-band feed assembly. A support member may be coupled to the multi-band feed assembly to orient the multi-band feed assembly for direct illumination of the reflector. The multi-band feed assembly may include first and second feeds, each having a respective septum polarizer coupled between a respective common waveguide and a respective pair of waveguides. A housing of the support member may contain the respective septum polarizers and the respective pairs of waveguides.
-
公开(公告)号：US09184482B2
公开(公告)日：2015-11-10
申请号：US14622430
申请日：2015-02-13
申请人： VIASAT, INC.
CPC分类号： H01Q1/02 , H01P1/00 , H01P5/12 , H01P11/001 , H01Q1/28 , H01Q13/02 , H01Q21/0037 , H01Q21/0075 , Y10T29/49002 , Y10T29/49016
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.
摘要翻译： 在示例实施例中，方位组合器包括：隔膜层，包括多个隔膜分隔件; 第一和第二壳体层附接到隔膜层的第一和第二侧; 在组合器的第一端上的端口的线性阵列; 其中所述第一和第二壳体层各自包括波导H平面T形接头; 其中所述波导T形结可以被配置为执行功率分配/组合; 并且其中所述隔膜层将所述线性阵列阵列的每个端口均匀地平分。 这种方位组合器的堆叠可以形成端口的二维平面阵列，其可以添加喇叭孔径层和栅格层，以形成双极化双BFN双频天线阵列。
-
公开(公告)号：US11973572B2
公开(公告)日：2024-04-30
申请号：US17375485
申请日：2021-07-14
申请人： ViaSat, Inc.
IPC分类号： H04B7/185 , H01Q1/06 , 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 , H04W16/28 , H04W40/20 , H04W76/10 , H04W84/06 , H01Q1/24 , H04W16/26
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 , H05K999/99
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.
-
公开(公告)号：US10333218B2
公开(公告)日：2019-06-25
申请号：US15162428
申请日：2016-05-23
申请人： VIASAT, INC.
发明人： Donald L Runyon
摘要： Systems, devices, and methods for determining and applying true time delay (TTD) values for compensating for free-space path length differences between a phased array and a reflector in wideband communication are disclosed. TTD values are determined for individual and groups of antenna elements in phased array fed reflector (PAFR) antennas based distances from a focal region of the reflector. The distance from the focal region of the reflector and the offset of the phased array from the reflectors focal plane can be used to determine path length differences. Corresponding TTD values for antenna elements are then determined based on the path length difference associated with the antenna elements. Each antenna element can be coupled to a TTD element to provide the corresponding TTD value to the signals received by and generated by the antenna elements of the phased array. The TTD elements include transverse electromagnetic (TEM) mode mechanisms.
-
公开(公告)号：US10135126B2
公开(公告)日：2018-11-20
申请号：US15165539
申请日：2016-05-26
申请人： VIASAT, INC.
发明人： Lance B Diamond , Donald L Runyon
IPC分类号： H01Q1/28 , H01Q3/24 , H01Q3/08 , H01Q21/06 , H04B7/06 , H01Q1/42 , H01Q3/02 , H01Q21/28 , H04B7/08
摘要： In one embodiment, 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 an amount of interference with an adjacent satellite reaches a threshold due to the wide beamwidth axis of the asymmetric antenna beam pattern.
-
公开(公告)号：US20170256864A1
公开(公告)日：2017-09-07
申请号：US15059214
申请日：2016-03-02
申请人： VIASAT, INC.
发明人： Anders Jensen , Donald L Runyon
CPC分类号： H01Q15/16 , H01P1/17 , H01P5/12 , H01P5/16 , H01Q3/08 , H01Q5/35 , H01Q5/55 , H01Q13/0241 , H01Q13/0258 , H01Q19/08 , H01Q19/17
摘要： An antenna may include a reflector and a multi-band feed assembly. A support member may be coupled to the multi-band feed assembly to orient the multi-band feed assembly for direct illumination of the reflector. The multi-band feed assembly may include first and second feeds, each having a respective septum polarizer coupled between a respective common waveguide and a respective pair of waveguides. A housing of the support member may contain the respective septum polarizers and the respective pairs of waveguides.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.015 秒)
