Patents by Inventor Mitchell R. Blozinski
Mitchell R. Blozinski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11489548Abstract: Apparatus and methods for providing hot-switching immunity for radio frequency switching circuits are disclosed. A radio frequency switching circuit may include both a mechanical switch and a solid-state switch. The mechanical switch may be configurable to couple an output path of a power amplifier to a subsequent component in its transmission path when in a first mechanical switch state and to decouple the output path of the power amplifier from the subsequent component when in a second mechanical switch state. The solid-state switch may be configurable to operatively decouple the mechanical switch from a radio frequency power source when in a first solid-state switch state but not when in a second solid-state switch state. The solid-state switch may be in the first solid-state switch state during transitions of the mechanical switch between the first and second mechanical switch states.Type: GrantFiled: September 10, 2021Date of Patent: November 1, 2022Assignee: Motorola Solutions, Inc.Inventors: Anders Stensgaard Larsen, Mitchell R. Blozinski, Daniel Studer
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Publication number: 20210409044Abstract: Apparatus and methods for providing hot-switching immunity for radio frequency switching circuits are disclosed. A radio frequency switching circuit may include both a mechanical switch and a solid-state switch. The mechanical switch may be configurable to couple an output path of a power amplifier to a subsequent component in its transmission path when in a first mechanical switch state and to decouple the output path of the power amplifier from the subsequent component when in a second mechanical switch state. The solid-state switch may be configurable to operatively decouple the mechanical switch from a radio frequency power source when in a first solid-state switch state but not when in a second solid-state switch state. The solid-state switch may be in the first solid-state switch state during transitions of the mechanical switch between the first and second mechanical switch states.Type: ApplicationFiled: September 10, 2021Publication date: December 30, 2021Inventors: Anders Stensgaard Larsen, Mitchell R. Blozinski, Daniel Studer
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Patent number: 11165452Abstract: Apparatus and methods for providing hot-switching immunity for radio frequency switching circuits are disclosed. A radio frequency switching circuit may include both a mechanical switch and a solid-state switch. The mechanical switch may be configurable to couple an output path of a power amplifier to a subsequent component in its transmission path when in a first mechanical switch state and to decouple the output path of the power amplifier from the subsequent component when in a second mechanical switch state. The solid-state switch may be configurable to operatively decouple the mechanical switch from a radio frequency power source when in a first solid-state switch state but not when in a second solid-state switch state. The solid-state switch may be in the first solid-state switch state during transitions of the mechanical switch between the first and second mechanical switch states.Type: GrantFiled: December 17, 2019Date of Patent: November 2, 2021Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Anders Stensgaard Larsen, Mitchell R. Blozinski, Daniel Studer
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Publication number: 20210184709Abstract: Apparatus and methods for providing hot-switching immunity for radio frequency switching circuits are disclosed. A radio frequency switching circuit may include both a mechanical switch and a solid-state switch. The mechanical switch may be configurable to couple an output path of a power amplifier to a subsequent component in its transmission path when in a first mechanical switch state and to decouple the output path of the power amplifier from the subsequent component when in a second mechanical switch state. The solid-state switch may be configurable to operatively decouple the mechanical switch from a radio frequency power source when in a first solid-state switch state but not when in a second solid-state switch state. The solid-state switch may be in the first solid-state switch state during transitions of the mechanical switch between the first and second mechanical switch states.Type: ApplicationFiled: December 17, 2019Publication date: June 17, 2021Inventors: Anders Stensgaard Larsen, Mitchell R. Blozinski, Daniel Studer
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Patent number: 10862438Abstract: A method and base station transmitter for providing offline tuning of a base station transmitter. The base station transmitter includes a feed-forward power amplifier comprising a Radio Frequency (RF) input and an RF output. The base station transmitter also includes a simulated carrier generator operatively coupled to the feed-forward power amplifier prior to the carrier cancellation loop. The simulated carrier generator provides a simulated carrier signal including one or more individual carrier frequencies to the RF input. The base station transmitter also includes a processor that is operatively coupled to the feed-forward power amplifier and the simulated carrier generator. The processor performs tuning of a carrier cancellation loop using the simulated carrier signal when the processor determines that a carrier signal is not present.Type: GrantFiled: December 30, 2019Date of Patent: December 8, 2020Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Mitchell R Blozinski, Niels-Henrik Lai Hansen, Rodney W Hagen
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Patent number: 10763791Abstract: 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.Type: GrantFiled: December 21, 2018Date of Patent: September 1, 2020Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Rodney W. Hagen, Mitchell R. Blozinski, Dennis M. Drees
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Publication number: 20200204118Abstract: 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.Type: ApplicationFiled: December 21, 2018Publication date: June 25, 2020Inventors: Rodney W. Hagen, Mitchell R. Blozinski, Dennis M. Drees
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Patent number: 10658982Abstract: 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.Type: GrantFiled: December 21, 2018Date of Patent: May 19, 2020Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Dennis M. Drees, Mitchell R. Blozinski, Rodney W. Hagen
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Patent number: 7760027Abstract: An apparatus and method are provided for reducing the output voltage in a power amplifier. The power amplifier contains a power supply, an amplifier stage, an impedance matching circuit, and a voltage reduction unit connected between the power supply and the amplifier stage. A power amplifier device within the amplifier stage has a gain bandwidth that covers multiple frequency bands. The output voltage of the power amplifier device is a composite voltage that contains fundamental and harmonic components that lie within the gain bandwidth. The voltage reduction unit reduces the supply voltage of the power amplifier device such that the composite output voltage is less than the breakdown voltage in the power amplifier device. The impedance matching circuit is coupled to the power amplifier device output and provides impedance matching for output signals of the fundamental and harmonic frequencies.Type: GrantFiled: May 8, 2008Date of Patent: July 20, 2010Assignee: Motorola, Inc.Inventors: Rizwan Murji, Mitchell R. Blozinski, Rodney W. Hagen
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Publication number: 20090278610Abstract: An apparatus and method are provided for reducing the output voltage in a power amplifier. The power amplifier contains a power supply, an amplifier stage, an impedance matching circuit, and a voltage reduction unit connected between the power supply and the amplifier stage. A power amplifier device within the amplifier stage has a gain bandwidth that covers multiple frequency bands. The output voltage of the power amplifier device is a composite voltage that contains fundamental and harmonic components that lie within the gain bandwidth. The voltage reduction unit reduces the supply voltage of the power amplifier device such that the composite output voltage is less than the breakdown voltage in the power amplifier device. The impedance matching circuit is coupled to the power amplifier device output and provides impedance matching for output signals of the fundamental and harmonic frequencies.Type: ApplicationFiled: May 8, 2008Publication date: November 12, 2009Applicant: MOTOROLA, INC.Inventors: RIZWAN MURJI, MITCHELL R. BLOZINSKI, RODNEY W. HAGEN