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Patent Agency Ranking
公开(公告)号：US20190123996A1
公开(公告)日：2019-04-25
申请号：US16218240
申请日：2018-12-12
Applicant: Facebook, Inc.
Inventor： Krishna Srikanth Gomadam , Lakshmi Pradeep , Djordje Tujkovic
IPC: H04L12/721 , H04B7/06 , H04L12/24 , H04L12/26 , H04B7/08
CPC classification number: H04L45/26 , H04B7/0617 , H04B7/0695 , H04B7/088 , H04L41/12 , H04L43/08 , H04L43/50
Abstract: Embodiments for a wireless node utilizing a limited memory radio frequency integrated circuit (RFIC) are disclosed. For an embodiment, the wireless node includes a plurality of antennas operative to form a plurality of wireless beams, wherein a direction of each of the plurality of wireless beams is controlled by selecting a phase and amplitude adjustment of a communication signal communicated through each of the plurality of antennas. The wireless node includes a memory that includes a first portion and a second portion, wherein phase and amplitude settings for each of the plurality of targets are stored in the first portion, and wherein alternate phase and amplitude setting are dynamically store in the second portion. Phase and amplitude settings are accessed from the first portion when the wireless node is communicating with targets. The second portion is utilized for storing alternate settings when testing wireless communication with the targets.
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公开(公告)号：US10587499B2
公开(公告)日：2020-03-10
申请号：US16218240
申请日：2018-12-12
Applicant: Facebook, Inc.
Inventor： Krishna Srikanth Gomadam , Lakshmi Pradeep , Djordje Tujkovic
Abstract: Embodiments for a wireless node utilizing a limited memory radio frequency integrated circuit (RFIC) are disclosed. For an embodiment, the wireless node includes a plurality of antennas operative to form a plurality of wireless beams, wherein a direction of each of the plurality of wireless beams is controlled by selecting a phase and amplitude adjustment of a communication signal communicated through each of the plurality of antennas. The wireless node includes a memory that includes a first portion and a second portion, wherein phase and amplitude settings for each of the plurality of targets are stored in the first portion, and wherein alternate phase and amplitude setting are dynamically store in the second portion. Phase and amplitude settings are accessed from the first portion when the wireless node is communicating with targets. The second portion is utilized for storing alternate settings when testing wireless communication with the targets.
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公开(公告)号：US11005581B1
公开(公告)日：2021-05-11
申请号：US16784340
申请日：2020-02-07
Applicant: Facebook, Inc.
Inventor： Krishna Srikanth Gomadam , Walid Ali-Ahmad , Djordje Tujkovic , Alireza Tarighat Mehrabani
IPC: H04B17/12 , H01Q3/26 , H04B7/06 , H04B17/10 , H04B7/0408
Abstract: Apparatuses, methods, and systems for calibrating of an antenna array that uses low-resolution phase shifters, are disclosed. On method includes generating a codebook of phase-shifter setting selections for each of a plurality of antenna elements of an antenna array including communicating a wireless signal between an external calibration antenna and the antenna array through a beam formed by a reference antenna element of the antenna array and an antenna element of the antenna array being calibrated, measuring a signal power of the communicated wireless signal for each of N settings of a digitally selected phase shifter associated with the antenna element of the antenna array being calibrated, and estimating a virtual signal power of each of M settings of the digitally selected phase shifter based on the signal power measurements of the N settings of the digitally selected phase shifter, wherein M is greater than N.
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公开(公告)号：US09948408B1
公开(公告)日：2018-04-17
申请号：US15584130
申请日：2017-05-02
Applicant: Facebook, Inc.
Inventor： Krishna Srikanth Gomadam , William Charles Fujimoto , Djordje Tujkovic , Sanjai Kohli
Abstract: Apparatuses, methods, and systems for calibrating an antenna array are disclosed. One method includes selecting an antenna element of a first antenna subarray and an antenna element of a second antenna subarray, transmitting the signal through the at least one antenna element of the first subarray having a first selected phase, transmitting the signal through the at least one antenna element of the second subarray having a second selected phase, and characterizing a relative phase offset between the antenna element of the first antenna subarray and the antenna element of the second antenna subarray, including adjusting the first selected phase or the second selected phase, and monitoring a receive signal received at a calibration antenna that includes the transmitted signal of the at least one antenna element of the first antenna subarray and the transmitted signal of the at least one antenna element of second antenna subarray.
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公开(公告)号：US10715242B1
公开(公告)日：2020-07-14
申请号：US16582858
申请日：2019-09-25
Applicant: Facebook, Inc.
Inventor： Ahmed Gamal Helmy Mohamed , Krishna Srikanth Gomadam , Sam Padinjaremannil Alex , Walid Ali-Ahmad
IPC: H04B17/12 , H04B7/0456 , H04B7/06 , H01Q1/52 , H01Q3/38
Abstract: Apparatuses, methods, and systems for grouping antenna elements to enhance an antenna array response resolution, are disclosed. One method includes selecting a plurality of groups of antenna elements from an antenna array, wherein each group includes a plurality of antenna elements of the antenna array, determining an optimal phase setting for a beam directed from each group to a target device, and characterizing each of the groups including adjusting a phase of an electronic signal passing through each of the antenna elements of the group based on the optimal phase setting of the group, adjusting an amplitude ai of the electronic signal the passing through each of the antenna elements of the group to compensate for a loss of antenna array gain of the antenna array due to grouping of the antenna elements, and storing the adjusted phase and adjusted amplitude for each of the antenna element.
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