-
公开(公告)号：US11923619B2
公开(公告)日：2024-03-05
申请号：US17126983
申请日：2020-12-18
发明人： Idan Michael Horn , Shay Landis , Assaf Touboul
IPC分类号： H01Q3/40 , H04B7/0417 , H04B7/06
CPC分类号： H01Q3/40 , H04B7/0421 , H04B7/0617
摘要： Aspects of disclosure relate to beam steering at a multi-antenna device. The device receives an activation signal to activate one or more input ports of a Butler matrix and outputs signals from all output ports of the Butler matrix based on activation of the one or more input ports. The signals output from the output ports have varying phase shifts relative to each other. Moreover, the device phase shifts the signals output from the output ports via a plurality of phase shifters respectively coupled to the output ports. The phase shifted signals have further varying phase shifts relative to each other and a phase difference between adjacent phase shifted signals. Each one of a plurality of antenna elements at the device receives a phase shifted signal from an associated phase shifter and outputs a beam based on the phase shifted signal received from the associated phase shifter.
-
公开(公告)号：US20240039155A1
公开(公告)日：2024-02-01
申请号：US17877972
申请日：2022-07-31
IPC分类号： H01Q3/40
CPC分类号： H01Q3/40
摘要： A method of selecting an antenna beam includes: selecting a beam port of a first phase progression matrix having a first subset of antenna ports terminated in respective first characteristic impedances; selecting a beam port of a second phase progression matrix that is separate from the first phase progression matrix and has a second subset of antenna ports terminated in respective second characteristic impedances; and at least one of: combining a first receive signal portion from the selected beam port of the first phase progression matrix and a second receive signal portion from the selected beam port of the second phase progression matrix, or providing a first portion of a transmit signal to the selected beam port of the first phase progression matrix and a second portion of the transmit signal to the selected beam port of the second phase progression matrix.
-
公开(公告)号：US11777573B2
公开(公告)日：2023-10-03
申请号：US17639678
申请日：2019-09-20
发明人： Pål Frenger , Emil Björnson , Erik G. Larsson
IPC分类号： H04B7/06 , H01Q3/40 , H04B7/0495
CPC分类号： H04B7/0617 , H01Q3/40 , H04B7/0495
摘要： An antenna system includes at least a first antenna processing unit, APU1, and a second antenna processing unit, APU2, adjacently connected to each other through a serialized front haul. Each one of the APU1 and APU2 has at least two antenna elements. The antenna elements of APU1 are connected to their respective Radio Frequency, RF, chains via a first beamforming unit, and the antenna elements of APU2 are connected to their respective RF chains via a second beamforming unit. A network node configures the first beamforming unit and the second beamforming unit such that an absolute value of an angular difference between at least one of the beam directions generated by the first beamforming unit and each of the beam directions generated by the second beamforming unit exceeds or is equal to a threshold value.
-
公开(公告)号：US11709248B2
公开(公告)日：2023-07-25
申请号：US17094338
申请日：2020-11-10
发明人： Jasbir Singh
IPC分类号： G01S13/58 , G01S13/02 , G01S7/35 , G01S13/931 , H01Q3/40
CPC分类号： G01S13/584 , G01S7/352 , G01S13/0209 , G01S7/356 , G01S13/931 , H01Q3/40
摘要： A non-transitory computer-readable medium stores instructions that cause processors to obtain an N×M range matrix comprising radar data indexed by velocity and antenna and an M×S steering matrix comprising expected phases indexed by antenna and hypothesis angle. For each unique X×Y range slice corresponding to a particular set of X velocities, processors store the particular range slice in a first buffer. For each unique Y×Z steering slice corresponding to a particular set of Y antenna, processors store the particular steering slice in a second buffer. The processors perform beamforming operations on the range, steering, and intermediate slices, storing the result in a third buffer as the intermediate slice. After each steering and range slice for the particular set of X velocities has been iterated through, the processors store the intermediate slice as a beamforming slice for the particular set of X velocities and the hypothesis angles.
-
公开(公告)号：US20190115650A1
公开(公告)日：2019-04-18
申请号：US16158876
申请日：2018-10-12
摘要： In one example, the present disclosure provides a phased array antenna system with a first array of antenna elements and a first radio frequency beamforming network configured to split the power of a radio frequency signal for transmission into a first plurality of component signals comprising drive signals for the first array of antenna elements, the first radio frequency beamforming network further configured to combine a radio frequency signal for reception by the phased array antenna system from a second plurality of component signals from the first array of antenna elements, where a radio frequency power distribution of the first radio frequency beamforming network is arranged to provide a weighting of the first plurality and the second plurality of component signals processed via antenna elements towards one end of the first array.
-
公开(公告)号：US20180351636A1
公开(公告)日：2018-12-06
申请号：US16055703
申请日：2018-08-06
申请人： ViaSat, Inc.
CPC分类号： H04B7/18513 , H01Q1/06 , H01Q1/247 , 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 , H04W16/26 , H04W16/28 , H04W40/20 , H04W76/02 , H04W76/10 , H04W84/06 , 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：US20180205447A1
公开(公告)日：2018-07-19
申请号：US15919664
申请日：2018-03-13
申请人： ViaSat, Inc.
CPC分类号： H04B7/18513 , H01Q1/06 , H01Q1/247 , H01Q1/288 , H01Q3/247 , H01Q3/40 , H01Q5/50 , H01Q19/132 , H01Q21/0025 , H01Q21/24 , H01Q25/001 , H04B7/0617 , H04B7/18508 , H04B7/18515 , H04B7/18517 , H04B7/1858 , H04B7/18586 , H04B7/18589 , H04B7/204 , H04B7/2041 , H04B10/118 , H04W16/26 , H04W16/28 , H04W40/20 , H04W76/02 , H04W76/10
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：US09979447B2
公开(公告)日：2018-05-22
申请号：US14987513
申请日：2016-01-04
发明人： Zhengxiang Ma , Leonard Piazzi , Huairen Yi
IPC分类号： H04B7/02 , H04B7/0452 , H01Q21/00 , H01Q21/29 , H01Q25/00 , H04B7/0408 , H01Q3/40 , H01Q21/08 , H04B7/06 , H04B7/10
CPC分类号： H04B7/0452 , H01Q3/40 , H01Q21/0006 , H01Q21/08 , H01Q21/293 , H01Q25/00 , H01Q25/001 , H04B7/0408 , H04B7/0617 , H04B7/10
摘要： A RF distribution network for split beam antennas is disclosed. The split beam antennas may include four-column cross-polarized user specific tilt antennas implemented in a 4T4R or 4T8R system. A RF distribution network may provide transmit signals from transmitters to antennas while also providing receive signals from the antennas. A RF distribution network may include 180° 6.9 dB combiners coupled to the antennas and also coupled 90° hybrids. A 180° 6.9 dB combiner may include a transmission network with transmission lines in a 4T4R system. Alternatively, a 180° 6.9 dB combiner may include a transmission network with transmit and receive filters in a 4T8R system. The transmission network couples the transmit filter and two filters by at least three λ/4 transmission lines. A transmission network provides isolation between two receive signal paths and, at the same time, provides power splitting of transmitter power to two duplexed transmit signal paths.
-
公开(公告)号：US09967087B2
公开(公告)日：2018-05-08
申请号：US15715049
申请日：2017-09-25
申请人： Movandi Corporation
发明人： Sam Gharavi , Farid Shirinfar , Michael Boers , Seunghwan Yoon , Alfred Grau Besoli , Maryam Rofougaran , Ahmadreza Rofougaran
摘要： A wireless receiver is disclosed. The wireless receiver includes a phased array antenna panel having a plurality of antennas, and a low resolution analog-to-digital (A/D) converter coupled to each of the plurality of antennas, where the low resolution A/D converter is configured to provide a digital output based on comparing a reference value with a sum of noise value and signal value of an analog input received by the corresponding one of the plurality of antennas. Noise signals received by the plurality of antennas are uncorrelated, and a signal to noise ratio (SNR) of the analog input can be less than one. The low resolution A/D converter can be a one-bit A/D converter. The one-bit A/D converter can be a comparator receiving the sum of noise value and signal value as one comparator input, and receiving the reference value as another comparator input.
-
公开(公告)号：US09954601B2
公开(公告)日：2018-04-24
申请号：US15719272
申请日：2017-09-28
申请人： ViaSat, Inc.
CPC分类号： H04B7/18513 , H01Q1/06 , H01Q1/247 , H01Q1/288 , H01Q3/247 , H01Q3/40 , H01Q5/50 , H01Q19/132 , H01Q21/0025 , H01Q21/24 , H01Q25/001 , H04B7/0617 , H04B7/18508 , H04B7/18515 , H04B7/18517 , H04B7/1858 , H04B7/18586 , H04B7/18589 , H04B7/204 , H04B7/2041 , H04B10/118 , H04W16/26 , H04W16/28 , H04W40/20 , H04W76/02 , H04W76/10
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.
-
-
-
-
-
-
-
-
-
搜索结果
671 条记录 (耗时 0.037 秒)
