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Patent Agency Ranking
公开(公告)号：US11456760B1
公开(公告)日：2022-09-27
申请号：US17193939
申请日：2021-03-05
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Rodney W. Hagen , Gregory J. Buchwald , Dennis M. Drees , In S. Kim , Arthur Christopher Leyh
IPC: H04B1/04 , H04B17/318 , H04B1/10
Abstract: Apparatus and method for linearizing narrowband carriers with low resolution predistorters are provided. The method includes amplifying, using a power amplifier, one or more broadcast carriers and linearizing, using a predistorter coupled to the power amplifier, the one or more broadcast carriers. The method also includes determining, using an electronic processor, a composite bandwidth of the one or more broadcast carriers and determining, using the electronic processor, whether the composite bandwidth is below a modulation bandwidth of the predistorter. The method further includes controlling, using the electronic processor, a pacification carrier generator coupled to the electronic processor to combine a pacification carrier with the one or more broadcast carriers when the composite bandwidth is below the minimum modulation bandwidth of the predistorter.
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公开(公告)号：US20220286151A1
公开(公告)日：2022-09-08
申请号：US17193939
申请日：2021-03-05
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Rodney W. Hagen , Gregory J. Buchwald , Dennis M. Drees , In S. Kim , Arthur Christopher Leyh
IPC: H04B1/04 , H04B17/318 , H04B1/10
Abstract: Apparatus and method for linearizing narrowband carriers with low resolution predistorters are provided. The method includes amplifying, using a power amplifier, one or more broadcast carriers and linearizing, using a predistorter coupled to the power amplifier, the one or more broadcast carriers. The method also includes determining, using an electronic processor, a composite bandwidth of the one or more broadcast carriers and determining, using the electronic processor, whether the composite bandwidth is below a modulation bandwidth of the predistorter. The method further includes controlling, using the electronic processor, a pacification carrier generator coupled to the electronic processor to combine a pacification carrier with the one or more broadcast carriers when the composite bandwidth is below the minimum modulation bandwidth of the predistorter.
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公开(公告)号：US10763791B2
公开(公告)日：2020-09-01
申请号：US16231353
申请日：2018-12-21
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Rodney W. Hagen , Mitchell R. Blozinski , Dennis M. Drees
Abstract: Apparatus and method for selective linearization of scalable fault tolerant frequency agile transmitters. In one embodiment, the method includes receiving timestamped carrier configurations and segmenting the timestamped carrier configurations into time segments having a pre-determined time length. The method also includes determining composite carrier configuration in a present time segment for a predetermined number of future time segments and determining a correction solution of a plurality of correction solutions associated with the composite carrier configuration in a mapping of a plurality of carrier configurations and the plurality of correction solutions. The method includes providing the correction solution to a linearizer of at least one of a plurality of multi-carrier power amplifiers. The plurality of power amplifiers are provided in one or more banks of multi-carrier power amplifiers.
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公开(公告)号：US10658982B1
公开(公告)日：2020-05-19
申请号：US16231306
申请日：2018-12-21
Applicant: MOTOROLA SOLUTIONS, INC.
Inventor： Dennis M. Drees , Mitchell R. Blozinski , Rodney W. Hagen
Abstract: Apparatus and method for dynamically linearizing multi-carrier power amplifiers. In one example, the method includes storing a correction set including a plurality of correction solutions and loading the correction set into an RF power amplifier linearizer. The method includes determining a first carrier configuration of an RF transmitter during a first timeslot of operation of the RF transmitter and sending a first correction solution index to the RF power amplifier linearizer. The first correction solution index corresponds to a first correction solution of the plurality of correction solutions. The method also includes determining that a carrier configuration change is initiated to operate the RF transmitter with a second carrier configuration during a second timeslot of operation of the RF transmitter and sending a second correction solution index to the RF power amplifier linearizer. The second correction solution index corresponds to a second correction solution of the plurality of correction solutions.
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公开(公告)号：US09136989B2
公开(公告)日：2015-09-15
申请号：US14050934
申请日：2013-10-10
Applicant: MOTOROLA SOLUTIONS, INC
Inventor： Dennis M. Drees , Bryan A. Hoon
Abstract: In an embodiment, an apparatus comprises an in-phase-quadrature (IQ) signal amplifier having an IQ baseband input, an IQ mixer input connected to the IQ signal amplifier, a carrier leakage detector connected to outputs of the IQ mixer, and a carrier-null offset signal generator connected to the carrier leakage detector. The IQ mixer is configured to be driven by an IQ carrier signal. The carrier leakage detector is configured to output an in-phase leakage level measurement and a quadrature leakage level measurement in the absence of an IQ baseband signal at the IQ baseband input. The carrier-null offset signal generator is configured to (i) inject an in-phase carrier-null offset signal based on the in-phase leakage level measurement and (ii) inject a quadrature carrier-null offset signal based on the quadrature leakage level measurement.
Abstract translation: 在一个实施例中，一种装置包括具有IQ基带输入的同相正交（IQ）信号放大器，连接到IQ信号放大器的IQ混频器输入，连接到IQ混频器的输出的载波泄漏检测器，以及载波 - 负偏移信号发生器连接到载波泄漏检测器。 IQ混频器配置为由IQ载波信号驱动。 载波泄漏检测器被配置为在IQ基带输入处没有IQ基带信号的情况下输出同相泄漏电平测量和正交泄漏电平测量。 载波零点偏移信号发生器被配置为（i）基于同相泄漏电平测量注入同相载波偏移信号，以及（ii）基于正交泄漏电平注入正交载波 - 零偏移信号 测量。
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