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公开(公告)号：US10536308B2
公开(公告)日：2020-01-14
申请号：US15784747
申请日：2017-10-16
Applicant: Analog Devices Global Unlimited Company
Inventor： Sudarshan Onkar , Michael O'Brien
Abstract: In a communication receiver circuit, an amplifier circuit can include an adjustable gain. A signal corresponding to a portion of a transmitted frame can be received, and a gain of the receiver circuit can be adjusted such as automatically, and such adjustment can be referred to as automatic gain control (AGC). An offset correction can be performed to adjust for an error in a received representation of a transmitted carrier, and such offset correction can be referred to as carrier frequency offset (CFO) correction. A portion of the received signal can be dynamically allocated between AGC and CFO correction, such as allocating a longer duration to CFO correction when AGC results in a relatively higher receiver gain, and allocating a shorter duration to CFO correction when AGC results in a relatively lower receiver gain.
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2.发明授权公开(公告)号：US10116368B2
公开(公告)日：2018-10-30
申请号：US14912057
申请日：2014-08-15
Applicant: Analog Devices Global
Inventor： Conor O'Keeffe , Michael O'Brien , Sean Sexton
IPC: H01Q1/24 , H01Q3/26 , H04B7/04 , H04B7/06 , H04B17/11 , H04B17/12 , H04B17/14 , H04W16/28 , H04B7/0408 , H04B7/0491
Abstract: A communication unit comprises a plurality of antenna element feeds (203, 205) for coupling to a plurality of antenna elements of an antenna array, where each antenna element feed comprises at least one coupler; and a plurality of transmitters operably coupled to the plurality of antenna element feeds. At least one transmitter of the plurality of transmitters comprises: an input for receiving a first signal and at least one second signal; beamformer logic arranged to apply independent beamform weights (RefBF1, RefBF2) on the first signal and the at least one second signal of the transmitter respectively, wherein each of the independent beamform weights is allocated on a per sector basis; and a signal combiner arranged to combine the first signal and the second signal to produce a combined signal, such as that the combined signal supports a plurality of sectored beams.
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公开(公告)号：US20160191176A1
公开(公告)日：2016-06-30
申请号：US14912065
申请日：2014-08-15
Applicant: ANALOG DEVICES GLOBAL
Inventor： Conor O'Keeffe , Michael O'Brien , Sean Sexton
CPC classification number: H04B17/11 , H01Q3/267 , H04B7/0617 , H04B17/00
Abstract: A method for calibrating an antenna array coupled to a plurality of transmitters via a plurality of couplers and a plurality of antenna element feeds is described. The method comprises, at a communication unit: selecting and coupling at least one coupler to a calibration receiver in a feedback path in the communication unit; scaling at least one first signal by at least one first beamform weight; applying the scaled at least one first signal to a first transmitter of the plurality of transmitters and routing the scaled at least one first signal via the selected at least one coupler to the calibration receiver; generating a reference signal by selecting and scaling the at least one first signal by at least one second beamform weight substantially equal to the at least one first beamform weight; comparing the at least one first signal scaled with the at least one first beamform weight with the at least one first signal reference signal scaled by the at least one second beamform weight to determine at least one first parameter result; storing the at least one first parameter result of the comparison associated with the first transmitter; repeating for subsequent transmitters the steps of selecting and coupling a further coupler, scaling, applying at least one further signal to a further transmitter of the plurality of transmitters, generating a further reference signal, comparing and storing at least one further parameter result until the plurality of couplers have been selected; and determining at least one calibration correction coefficient from a plurality of parameter results for applying to at least one second signal input to at least one transmitter of the plurality of transmitters coupled to the antenna array to substantially equalise a transfer function of a plurality of transmit paths to antenna element feeds for the at least one second signal having beamform weights applied thereto.
Abstract translation: 描述了经由多个耦合器和多个天线元件馈送来校准耦合到多个发射器的天线阵列的方法。 该方法包括：在通信单元处：在通信单元中的反馈路径中选择和耦合至少一个耦合器到校准接收器; 通过至少一个第一波束束重量来缩放至少一个第一信号; 将所述缩放的至少一个第一信号应用于所述多个发射机中的第一发射机，并且经由所选择的至少一个耦合器将所述经缩放的至少一个第一信号路由到所述校准接收机; 通过基本上等于所述至少一个第一波束形式权重的至少一个第二波束形状权重来选择和缩放所述至少一个第一信号来产生参考信号; 将与所述至少一个第一波束形式权重缩放的所述至少一个第一信号与由所述至少一个第二波束形式权重缩放以确定至少一个第一参数结果的所述至少一个第一信号参考信号进行比较; 存储与第一发射机相关联的比较的至少一个第一参数结果; 为后续发射机重复步骤，选择和耦合另一个耦合器，缩放，将至少一个另外的信号施加到多个发射机中的另外的发射机，产生另外的参考信号，比较并存储至少一个其它参数结果，直到多个 的耦合器被选中; 以及从多个参数结果确定至少一个校准校正系数，以应用至少一个第二信号，所述至少一个第二信号输入到耦合到所述天线阵列的所述多个发射机中的至少一个发射机，以基本上均衡多个发射路径的传递函数 至少一个具有施加到其上的波束成形权重的第二信号的天线元件馈送。
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4.发明授权公开(公告)号：US10193603B2
公开(公告)日：2019-01-29
申请号：US14912057
申请日：2014-08-15
Applicant: Analog Devices Global
Inventor： Conor O'Keeffe , Michael O'Brien , Sean Sexton
IPC: H01Q1/24 , H01Q3/26 , H04B7/04 , H04B7/06 , H04B17/11 , H04B17/12 , H04B17/14 , H04W16/28 , H04B7/0408 , H04B7/0491
Abstract: A communication unit comprises a plurality of antenna element feeds (203, 205) for coupling to a plurality of antenna elements of an antenna array, where each antenna element feed comprises at least one coupler; and a plurality of transmitters operably coupled to the plurality of antenna element feeds. At least one transmitter of the plurality of transmitters comprises: an input for receiving a first signal and at least one second signal; beamformer logic arranged to apply independent beamform weights (RefBF1, RefBF2) on the first signal and the at least one second signal of the transmitter respectively, wherein each of the independent beamform weights is allocated on a per sector basis; and a signal combiner arranged to combine the first signal and the second signal to produce a combined signal, such as that the combined signal supports a plurality of sectored beams.
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Patent Agency Ranking
公开(公告)号：US10090940B2
公开(公告)日：2018-10-02
申请号：US14912065
申请日：2014-08-15
Applicant: Analog Devices Global
Inventor： Conor O'Keeffe , Michael O'Brien , Sean Sexton
Abstract: A method for calibrating an antenna array coupled to a plurality of transmitters via a plurality of couplers and a plurality of antenna element feeds is described. The method comprises, at a communication unit: selecting and coupling at least one coupler to a calibration receiver in a feedback path in the communication unit; scaling at least one first signal by at least one first beamform weight; applying the scaled at least one first signal to a first transmitter of the plurality of transmitters and routing the scaled at least one first signal via the selected at least one coupler to the calibration receiver; generating a reference signal by selecting and scaling the at least one first signal by at least one second beamform weight substantially equal to the at least one first beamform weight; comparing the at least one first signal scaled with the at least one first beamform weight with the at least one first signal reference signal scaled by the at least one second beamform weight to determine at least one first parameter result; storing the at least one first parameter result of the comparison associated with the first transmitter; repeating for subsequent transmitters the steps of selecting and coupling a further coupler, scaling, applying at least one further signal to a further transmitter of the plurality of transmitters, generating a further reference signal, comparing and storing at least one further parameter result until the plurality of couplers have been selected; and determining at least one calibration correction coefficient from a plurality of parameter results for applying to at least one second signal input to at least one transmitter of the plurality of transmitters coupled to the antenna array to substantially equalize a transfer function of a plurality of transmit paths to antenna element feeds for the at least one second signal having beamform weights applied thereto.
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公开(公告)号：US20180167091A1
公开(公告)日：2018-06-14
申请号：US15372723
申请日：2016-12-08
Applicant: Analog Devices Global
Inventor： Patrick Pratt , Michael O'Brien
CPC classification number: H04B1/0475 , H04B1/0483 , H04B7/0617 , H04B2001/0425 , Y02D70/40 , Y02D70/444
Abstract: Power amplifier circuits can behave in a non-linear manner particularly when operated to produce output signal swings approaching an amplifier saturation region. A pre-distortion signal can be applied to a signal to be transmitted to compensate for such power amplifier non-linearity. In applications where two or more transmitter power amplifiers are used, a beam-former can be configured to modify a digitally pre-distorted transmission signal by applying respective beam-forming weighting factors to the digitally pre-distorted transmission signal to provide input transmission signals for respective ones of the power amplifier circuits. The pre-distortion signal can be established at least in part using one or more of a sensed or estimated representation of a transmitted beam formed by spatially aggregating transmitted outputs from the two or more power amplifier circuits. In this manner, power amplifier efficiency can be enhanced without entirely separate pre-distortion compensation for each of the power amplifier circuits.
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公开(公告)号：US10298276B2
公开(公告)日：2019-05-21
申请号：US15372723
申请日：2016-12-08
Applicant: Analog Devices Global
Inventor： Patrick Pratt , Michael O'Brien
Abstract: Power amplifier circuits can behave in a non-linear manner particularly when operated to produce output signal swings approaching an amplifier saturation region. A pre-distortion signal can be applied to a signal to be transmitted to compensate for such power amplifier non-linearity. In applications where two or more transmitter power amplifiers are used, a beam-former can be configured to modify a digitally pre-distorted transmission signal by applying respective beam-forming weighting factors to the digitally pre-distorted transmission signal to provide input transmission signals for respective ones of the power amplifier circuits. The pre-distortion signal can be established at least in part using one or more of a sensed or estimated representation of a transmitted beam formed by spatially aggregating transmitted outputs from the two or more power amplifier circuits. In this manner, power amplifier efficiency can be enhanced without entirely separate pre-distortion compensation for each of the power amplifier circuits.
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8.发明申请COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD FOR GENERATING A PLURALITY OF SECTORED BEAMS 审中-公开通信单元，集成电路和产生多个部门的方法公开(公告)号：US20160197660A1
公开(公告)日：2016-07-07
申请号：US14912057
申请日：2014-08-15
Applicant: Conor O'KEEFFE , Michael O'BRIEN , Sean SEXTON , ANALOG DEVICES GLOBAL
Inventor： Conor O'Keeffe , Michael O'Brien , Sean Sexton
CPC classification number: H04B7/0617 , H01Q1/246 , H01Q3/267 , H04B7/0408 , H04B7/0491 , H04B17/11 , H04B17/12 , H04B17/14 , H04W16/28
Abstract: A communication unit comprises a plurality of antenna element feeds (203, 205) for coupling to a plurality of antenna elements of an antenna array, where each antenna element feed comprises at least one coupler; and a plurality of transmitters operably coupled to the plurality of antenna element feeds. At least one transmitter of the plurality of transmitters comprises: an input for receiving a first signal and at least one second signal; beamformer logic arranged to apply independent beamform weights (RcfBF1, RcfBF2) on the first signal and the at least one second signal of the transmitter respectively, wherein each of the independent beamform weights is allocated on a per sector basis; and a signal combiner arranged to combine the first signal and the second signal to produce a combined signal, such as that the combined signal supports a plurality of sectored beams.
Abstract translation: 通信单元包括用于耦合到天线阵列的多个天线元件的多个天线元件馈送（203,205），其中每个天线元件馈送包括至少一个耦合器; 以及可操作地耦合到所述多个天线元件馈送的多个发射器。 所述多个发射机中的至少一个发射机包括：用于接收第一信号和至少一个第二信号的输入; 波束形成器逻辑被布置成分别对所述发射机的第一信号和所述至少一个第二信号分别应用独立的波束形成权重（RcfBF1，RcfBF2），其中每个独立的波束形成权重分配在每个扇区的基础上; 以及信号组合器，被布置为组合第一信号和第二信号以产生组合信号，例如组合信号支持多个扇区波束。
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公开(公告)号：US10674459B2
公开(公告)日：2020-06-02
申请号：US15455556
申请日：2017-03-10
Applicant: Analog Devices Global
Inventor： Michael O'Brien , Sean Francis Sexton , Joshua Nekl , Dermot G. O'Keeffe
Abstract: An improved receiver for use in a data pocket communications is provide, where the process of configuring the gain of the receiver and identifying a preamble in the data packet are made more robust. The improved receiver does not need to rely on the received power level exceeding a trigger threshold to initiate the gain control. Instead the gain control runs while the receiver is waiting for a data packet. The frequency correction process can run concurrently with the gain control process.
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