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公开(公告)号：US20180323857A1
公开(公告)日：2018-11-08
申请号：US15847615
申请日：2017-12-19
Applicant: MOVANDI CORPORATION
Inventor： Kartik Sridharan , Ahmadreza Rofougaran , Michael Boers , Seunghwan Yoon , Sam Gharavi , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
CPC classification number: H04B7/0842 , H04B7/0617 , H04B7/0837 , H04B17/21 , H04B17/318
Abstract: A calibration system, in a receiver chip, receives a plurality of receive signals at a plurality of receive paths. A first receive path and a second receive path is selected for a first receive signal and a second receive signal, respectively. A first signal parameter of the second receive signal is adjusted relative to the first signal parameter of the first receive signal to maximize a first signal strength value of an added signal or minimize a second signal strength value of a subtracted signal. Based on the adjusted first signal parameter, an offset of the first signal parameter is calibrated. Further, based on a matching of the second signal parameter in the second receive path relative to the second signal parameter in the first receive path, value of the second signal parameter is calibrated.
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公开(公告)号：US12046820B2
公开(公告)日：2024-07-23
申请号：US17943300
申请日：2022-09-13
Applicant: Movandi Corporation
Inventor： Seunghwan Yoon , Zhihui Wang , Franco De Flaviis , Alfred Grau Besoli , Kartik Sridharan , Ahmadreza Rofougaran , Michael Boers , Sam Gharavi , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
CPC classification number: H01Q21/065 , H01Q1/2283 , H01Q9/045 , H01Q21/0025
Abstract: An antenna module that includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells on a first surface of the antenna substrate, a plurality of packaged circuitry on a second surface of the antenna substrate, and a plurality of supporting balls mounted on the second surface of the antenna substrate. The plurality of packaged circuitry includes a plurality of radio-frequency (RF) chips on the second surface of the antenna substrate. Each of the plurality of 3-D antenna cells comprises a raised antenna patch with a plurality of projections and a plurality of supporting legs, where at least a relief cut is provided between one of the plurality of projections and one of the plurality of supporting legs.
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公开(公告)号：US11901635B2
公开(公告)日：2024-02-13
申请号：US17898706
申请日：2022-08-30
Applicant: Movandi Corporation
Inventor： Seunghwan Yoon , Franco De Flaviis , Alfred Grau Besoli , Kartik Sridharan , Ahmadreza Rofougaran , Michael Boers , Sam Gharavi , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
CPC classification number: H01Q21/065 , H01Q1/2283 , H01Q9/045 , H01Q21/0025
Abstract: An apparatus includes a plurality of antenna modules and a printed circuit board (PCB) having a plurality of holes embedded with a heat sink. Each antenna module includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells mounted on a first surface of the antenna substrate, and a plurality of packaged circuitry mounted on a second surface of the antenna substrate. The plurality of packaged circuitry are electrically connected with the plurality of 3-D antenna cells. Each of the plurality of antenna modules is mounted on a plurality of portions of the heat sink such that a corresponding packaged circuitry of the plurality of packaged circuitry is in a direct contact with the plurality of portions of the heat sink embedded within the plurality of holes.
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公开(公告)号：US11664884B2
公开(公告)日：2023-05-30
申请号：US17863874
申请日：2022-07-13
Applicant: Movandi Corporation
Inventor： Sam Gharavi , Ahmadreza Rofougaran , Michael Boers , Seunghwan Yoon , Kartik Sridharan , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
IPC: H04L5/14 , H04B7/155 , H04B7/204 , H04B7/165 , H04W52/24 , H04B7/06 , H04B17/318 , H04B7/0413 , H04B7/15 , H04W52/46 , H04L5/00
CPC classification number: H04B7/15514 , H04B7/0413 , H04B7/0617 , H04B7/15 , H04B7/1555 , H04B7/165 , H04B7/2041 , H04B17/318 , H04W52/245 , H04W52/46 , H04L5/0023 , H04L5/14
Abstract: A device includes a primary sector and secondary sectors communicatively coupled to the primary sector. The processor included in the primary sector is configured to down convert a Radio Frequency (RF) signals with a first frequency to an analog baseband (IQ) signal with a second frequency, and receive a second digital baseband signal that comprises a first digital baseband signal and a digital echo signal. The first digital baseband signal comprises a training sequence signal. Further, the processor estimates a plurality of filter taps of the FIR filter based on the digital echo signal and estimate the digital echo signal in the received second digital baseband signal based on the first digital baseband signal and the plurality of filter taps of the FIR filter. The estimated digital echo signal is removed from at least one current digital baseband signal based on the down conversion of the RF signals.
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公开(公告)号：US11659409B2
公开(公告)日：2023-05-23
申请号：US17243747
申请日：2021-04-29
Applicant: Movandi Corporation
Inventor： Ahmadreza Rofougaran , Sam Gharavi , Kartik Sridharan , Michael Boers , Seunghwan Yoon , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
CPC classification number: H04W16/28 , H01Q1/242 , H03F3/602 , H04B3/232 , H04B7/0408 , H04B7/0695 , H04W24/02 , H03G3/3052
Abstract: A system, in an active reflector device, adjusts a first amplification gain of each of a plurality of radio frequency (RF) signals received at a receiver front-end from a first equipment via a first radio path of an NLOS radio path. A first phase shift is performed on each of the plurality of RF signals with the adjusted first amplification gain. A combination of the plurality of first phase-shifted RF signals is split at a transmitter front-end. A second phase shift on each of the split first plurality of first phase-shifted RF signals is performed. The plurality of RF signals as a directed beam is transmitted to a second equipment via a second radio path of the NLOS radio path.
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Patent Agency Ranking
公开(公告)号：US11616564B2
公开(公告)日：2023-03-28
申请号：US17863874
申请日：2022-07-13
Applicant: Movandi Corporation
Inventor： Sam Gharavi , Ahmadreza Rofougaran , Michael Boers , Seunghwan Yoon , Kartik Sridharan , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
IPC: H04L5/14 , H04B7/155 , H04B7/204 , H04B7/165 , H04W52/24 , H04B7/06 , H04B17/318 , H04B7/0413 , H04B7/15 , H04W52/46 , H04L5/00
Abstract: A device includes a primary sector and secondary sectors communicatively coupled to the primary sector. The processor included in the primary sector is configured to down convert a Radio Frequency (RF) signals with a first frequency to an analog baseband (IQ) signal with a second frequency, and receive a second digital baseband signal that comprises a first digital baseband signal and a digital echo signal. The first digital baseband signal comprises a training sequence signal. Further, the processor estimates a plurality of filter taps of the FIR filter based on the digital echo signal and estimate the digital echo signal in the received second digital baseband signal based on the first digital baseband signal and the plurality of filter taps of the FIR filter. The estimated digital echo signal is removed from at least one current digital baseband signal based on the down conversion of the RF signals.
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17.发明授权公开(公告)号：US11552401B2
公开(公告)日：2023-01-10
申请号：US17329276
申请日：2021-05-25
Applicant: Movandi Corporation
Inventor： Seunghwan Yoon , Ahmadreza Rofougaran , Sam Gharavi , Kartik Sridharan , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran , Alfred Grau Besoli , Enver Adas
Abstract: An antenna system includes a first substrate, a plurality of chips and a waveguide antenna element based beam forming phased array that includes a plurality of radiating waveguide antenna cells for millimeter wave communication. Each radiating waveguide antenna cell includes a plurality of pins where a first pin is connected with a body of a corresponding radiating waveguide antenna cell and the body corresponds to ground for the pins. The first pin includes a first and a second current path, the first current path being longer than the second current path. A first end of the radiating waveguide antenna cells is mounted on the first substrate, where the plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells.
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18.发明授权公开(公告)号：US11539143B2
公开(公告)日：2022-12-27
申请号：US17365037
申请日：2021-07-01
Applicant: Movandi Corporation
Inventor： Seunghwan Yoon , Ahmadreza Rofougaran , Sam Gharavi , Kartik Sridharan , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran , Alfred Grau Besoli , Enver Adas , Zhihui Wang
Abstract: An antenna system, includes a first substrate, a plurality of chips, and a waveguide antenna element based beam forming phased array. The waveguide antenna element based beam forming phased array includes a plurality of radiating waveguide antenna cells. Each radiating waveguide antenna cell includes a plurality of pins that are connected to ground. A body of each radiating waveguide antenna cell corresponds to the ground. The plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming through a second end of the plurality of radiating waveguide antenna cells.
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公开(公告)号：US11424814B2
公开(公告)日：2022-08-23
申请号：US17171521
申请日：2021-02-09
Applicant: Movandi Corporation
Inventor： Sam Gharavi , Ahmadreza Rofougaran , Michael Boers , Seunghwan Yoon , Kartik Sridharan , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
IPC: H04L5/14 , H04B7/155 , H04B7/204 , H04B7/165 , H04W52/24 , H04B7/06 , H04W52/46 , H04B17/318 , H04B7/0413 , H04B7/15 , H04L5/00
Abstract: An active repeater device includes a primary sector and one or more secondary sectors, receives a first beam of input RF signals. A first set of analog baseband signals, are generated based on received first beam of input RF signals. The first set of analog baseband signals are converted to a first set of coded data signals and control information is extracted from the first set of coded data signals by decoding only a header portion of the first set of coded data signals without demodulation of data portion of the first set of coded data signals. Based on the extracted control information, the first set of coded data signals are transmitted as beams of output RF signals to remote user equipment. The transmission is independent of demodulation of the data portion within the active repeater device to reduce latency for transmission of the first set of coded data signals.
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公开(公告)号：US11064368B2
公开(公告)日：2021-07-13
申请号：US16866536
申请日：2020-05-04
Applicant: Movandi Corporation
Inventor： Ahmadreza Rofougaran , Sam Gharavi , Kartik Sridharan , Michael Boers , Seunghwan Yoon , Donghyup Shin , Farid Shirinfar , Stephen Wu , Maryam Rofougaran
Abstract: A system, in an active reflector device, adjusts a first amplification gain of each of a plurality of radio frequency (RF) signals received at a receiver front-end from a first equipment via a first radio path of an NLOS radio path. A first phase shift is performed on each of the plurality of RF signals with the adjusted first amplification gain. A combination of the plurality of first phase-shifted RF signals is split at a transmitter front-end. A second phase shift on each of the split first plurality of first phase-shifted RF signals is performed. A second amplification gain of each of the plurality of second phase-shifted RF signals is adjusted.
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