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公开(公告)号：US20220416446A1
公开(公告)日：2022-12-29
申请号：US17903130
申请日：2022-09-06
申请人： Movandi Corporation
发明人： Ahmadreza ROFOUGARAN , Farid SHIRINFAR , Sam GHARAVI , Michael BOERS , Seunghwan YOON , Alfred Grau Besoli , Maryam ROFOUGARAN
摘要： A wireless communication device includes reconfigurable receive transmit antennas having horizontal-polarization antennas and vertical-polarization antennas, where the horizontal-polarization antennas receive or transmit horizontally-polarized signal for a first period of time, where the vertical-polarization antennas transmit or receive vertically-polarized signal for a second period of time, where the horizontal-polarization receive antennas form a receive beam based on receive phase and receive amplitude information provided by a master chip, and where the vertical-polarization transmit antennas form a transmit beam based on transmit phase and transmit amplitude information provided by the master chip.
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公开(公告)号：US20220368407A1
公开(公告)日：2022-11-17
申请号：US17863874
申请日：2022-07-13
申请人： Movandi Corporation
发明人： Sam GHARAVI , Ahmadreza ROFOUGARAN , Michael BOERS , Seunghwan YOON , Kartik SRIDHARAN , Donghyup SHIN , Farid SHIRINFAR , Stephen WU , Maryam ROFOUGARAN
IPC分类号： H04B7/155 , H04B7/204 , H04B7/165 , H04W52/24 , H04B7/06 , H04W52/46 , H04B17/318 , H04B7/0413 , H04B7/15
摘要： 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：US20210336347A1
公开(公告)日：2021-10-28
申请号：US17329276
申请日：2021-05-25
申请人： Movandi Corporation
发明人： Seunghwan YOON , Ahmadreza ROFOUGARAN , Sam GHARAVI , Kartik SRIDHARAN , Donghyup SHIN , Farid SHIRINFAR , Stephen WU , Maryam ROFOUGARAN , Alfred Grau Besoli , Enver Adas
摘要： 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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公开(公告)号：US20210328363A1
公开(公告)日：2021-10-21
申请号：US17365037
申请日：2021-07-01
申请人： Movandi Corporation
发明人： Seunghwan YOON , Ahmadreza ROFOUGARAN , Sam GHARAVI , Kartik SRIDHARAN , Donghyup SHIN , Farid SHIRINFAR , Stephen WU , Maryam ROFOUGARAN , Alfred Grau Besoli , Enver Adas , Zhihui WANG
摘要： 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：US20200212590A1
公开(公告)日：2020-07-02
申请号：US16398156
申请日：2019-04-29
申请人： Movandi Corporation
发明人： Ahmadreza ROFOUGARAN , Alfred Grau Besoli , Seunghwan YOON , Farid SHIRINFAR , Sam GHARAVI , Michael BOERS , Maryam ROFOUGARAN , Enver Adas , Kartik SRIDHARAN
摘要： A communication device includes a first lens and a feeder array. The first lens has a defined shape, a base, a first tubular membrane connected to the base, and a second membrane arranged as a cap on the first tubular membrane. The feeder array includes a plurality of antenna elements that are positioned in a specified proximal distance from the base of the first lens to receive a first lens-guided beam of input radio frequency (RF) signals through the second membrane of the first lens. The first lens of the defined shape covers the feeder array as a radome enclosure. A distribution of a gain from the received first lens-guided beam of input RF signals is substantially equalized across the feeder array to increase at least a reception sensitivity of the plurality of antenna elements of the feeder array.
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公开(公告)号：US20200083916A1
公开(公告)日：2020-03-12
申请号：US16684789
申请日：2019-11-15
申请人： Movandi Corporation
发明人： Farid SHIRINFAR , Ahmadreza ROFOUGARAN , Sam GHARAVI , Kartik SRIDHARAN , Michael BOERS , Seunghwan YOON , Donghyup SHIN , Stephen WU , Maryam ROFOUGARAN
摘要： An outphasing calibration method in an outphasing calibration RF transmitter comprises detection of differences of a first plurality of signal characteristics of a first plurality of amplified RF signals across at least a transmitter antenna and a plurality of load impedances. The first plurality of amplified RF signals corresponds to a first plurality of constant-envelope signals. Accordingly, at least a generation of a second plurality of constant-envelope signals and at least one signal characteristic of each of a second plurality of constant-envelope RF signals on a plurality of transmission paths are controlled. At least one of a first calibration or a second calibration of a second plurality of signal characteristics of the second plurality of constant-envelope signals is executed based on the controlled generation of the second plurality of constant-envelope signals and the at least one controlled signal characteristic of each of the second plurality of constant-envelope RF signals.
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公开(公告)号：US20190356381A1
公开(公告)日：2019-11-21
申请号：US16526544
申请日：2019-07-30
申请人： MOVANDI CORPORATION
发明人： Sam GHARAVI , Ahmadreza ROFOUGARAN , Michael BOERS , Seunghwan YOON , Kartik SRIDHARAN , Donghyup SHIN , Farid SHIRINFAR , Stephen WU , Maryam ROFOUGARAN
IPC分类号： H04B7/155 , H04B7/204 , H04B7/165 , H04B7/06 , H04B7/0413 , H04W52/46 , H04W52/24 , H04B17/318 , H04B7/15
摘要： 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：US20220393757A1
公开(公告)日：2022-12-08
申请号：US17887672
申请日：2022-08-15
申请人： Movandi Corporation
发明人： Sam GHARAVI , Ahmadreza ROFOUGARAN , Michael BOERS , Seunghwan YOON , Kartik SRIDHARAN , Donghyup SHIN , Farid SHIRINFAR , Stephen WU , Maryam ROFOUGARAN
IPC分类号： H04B7/155 , H04B7/204 , H04B7/165 , H04W52/24 , H04B7/06 , H04W52/46 , H04B17/318 , H04B7/0413 , H04B7/15
摘要： An active repeater device includes a primary sector and at least a secondary sector communicatively coupled to the primary sector receives or transmits a first beam of input RF signals having a first beam pattern from or to a base station, respectively. The primary sector includes an baseband signal processor and a first radio head (RH) unit. The secondary sector comprises a second RH unit. Beamforming coefficients are generated to convert the first beam pattern of the first beam of input RF signals to a second beam pattern based on a location of each of a plurality of user equipment (UEs). A second beam of output RF signals in the second beam pattern is transmitted from or received by, respectively, the secondary sector to or from, respectively, the plurality of UEs based on the generated beamforming coefficients and the received first beam of input RF signals.
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公开(公告)号：US20210399767A1
公开(公告)日：2021-12-23
申请号：US17412501
申请日：2021-08-26
申请人： Movandi Corporation
发明人： Ahmadreza ROFOUGARAN , Maryam ROFOUGARAN , Sam GHARAVI , Qiyue "Jack" ZOU , Alan WANG , Farid SHIRINFAR , Mike BOERS
摘要： A communication device includes a donor receiver that receives a plurality of first beam of input radio frequency (RF) signals. The communication device further includes a service transmitter that transmits a plurality of second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes control circuitry that detects an amount and a direction of reflected RF signals at the donor receiver. The control circuitry applies polarization to the plurality of second beam of RF signals and calibrates the polarization to minimize the reflected RF signals at the donor receiver. A second radiation pattern is generated for the plurality of second beam of RF signals and communicated to the UE based on the calibrated polarization.
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公开(公告)号：US20210351516A1
公开(公告)日：2021-11-11
申请号：US17382398
申请日：2021-07-22
申请人： Movandi Corporation
发明人： Ahmadreza ROFOUGARAN , Alfred Grau Besoli , Seunghwan YOON , Farid SHIRINFAR , Sam GHARAVI , Michael BOERS , Maryam ROFOUGARAN , Enver Adas , Kartik Sridharan
摘要： A communication device includes a first lens, a feeder array, and control circuitry communicatively coupled to the feeder array. The first lens is associated with a defined shape, which further exhibits a defined distribution of dielectric constant. The feeder array includes a plurality of antenna elements that are positioned in proximity to the first lens. The control circuitry equalizes a distribution of a gain from the received first lens-guided beam of input RF signals across the feeder array and different scan directions of the plurality of antenna elements. The equalized distribution of gain is based on the defined distribution of dielectric constant within the first lens and the proximity of the feeder array to the first lens.
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