Patents by Inventor Dwayne Allen
Dwayne Allen 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: 9935588Abstract: Circuits, devices and methods related to multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a first stage and a second stage, with each stage including a transistor. The PA assembly can further include a biasing circuit having a first bias path between a supply node and the base of a corresponding transistor. The PA assembly can further include a linearizing circuit implemented as either or both of a second bias path and a coupling path relative to the first bias path. The second bias path can be configured to provide an additional base bias current to the base under a selected condition. The coupling path can be configured to improve linearity of the corresponding transistor operating in a first mode while allowing a ballast resistance to be sufficiently robust for the corresponding transistor operating in a second mode.Type: GrantFiled: October 17, 2016Date of Patent: April 3, 2018Assignee: Skyworks Solutions, Inc.Inventors: Jianxing Ni, Michael Lynn Gerard, Ramanan Bairavasubramanian, Dwayne Allen Rowland, Matthew Lee Banowetz
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Publication number: 20170294880Abstract: Bias circuit for radio-frequency amplifier. In some embodiments, an amplifier circuit for radio-frequency applications can includes an amplifying transistor having an input. The amplifier circuit can further include a bias circuit having a first bias path implemented between a supply node and the input to provide a bias signal to the input of the amplifying transistor, and a second bias path implemented between the supply node and the input to provide an additional bias signal to the input of the amplifying transistor under a selected condition. The first bias path can include a first transistor configured to facilitate the bias signal provided to the input of the amplifying transistor, and the second bias path can include a second transistor configured to facilitate the additional bias signal provided to the input of the amplifying transistor.Type: ApplicationFiled: April 25, 2017Publication date: October 12, 2017Inventors: Michael Lynn GERARD, Ramanan BAIRAVASUBRAMANIAN, Dwayne Allen ROWLAND, Matthew Lee BANOWETZ
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Publication number: 20170266653Abstract: Methods of concentrating beads in a droplet and/or loading beads on a fluidic device are provided, including among other things, a method of concentrating beads in a droplet, the method comprising: (a) providing a droplet actuator comprising: (i) an interior droplet operations volume; and (ii) a reservoir exterior to the interior volume; (iii) a droplet established in a liquid path extending from the reservoir into the interior volume; (b) providing magnetically responsive beads in the portion of the droplet which is in the reservoir; (c) magnetically attracting the magnetically responsive beads through the liquid path into the portion of the droplet which is in the interior volume; and (d) forming a droplet comprising one or more of the magnetically responsive beads in the interior volume.Type: ApplicationFiled: June 6, 2017Publication date: September 21, 2017Inventors: Michael G. POLLACK, Ramakrishna SISTA, Zhishan HUA, Vamsee K. PAMULA, Arjun SUDARSAN, Vijay SRINIVASAN, Prasanna THWAR, Alexander SHENDEROV, Dwayne ALLEN
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Patent number: 9675972Abstract: Methods of concentrating beads in a droplet and/or loading beads on a fluidic device are provided, including among other things, a method of concentrating beads in a droplet, the method comprising: (a) providing a droplet actuator comprising: (i) an interior droplet operations volume; and (ii) a reservoir exterior to the interior volume; (iii) a droplet established in a liquid path extending from the reservoir into the interior volume; (b) providing magnetically responsive beads in the portion of the droplet which is in the reservoir; (c) magnetically attracting the magnetically responsive beads through the liquid path into the portion of the droplet which is in the interior volume; and (d) forming a droplet comprising one or more of the magnetically responsive beads in the interior volume.Type: GrantFiled: March 9, 2009Date of Patent: June 13, 2017Assignee: ADVANCED LIQUID LOGIC, INC.Inventors: Michael G. Pollack, Ramakrishna Sista, Zhishan Hua, Vamsee K. Pamula, Arjun Sudarsan, Vijay Srinivasan, Prasanna Thwar, Alexander Shenderov, Dwayne Allen
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Publication number: 20170133987Abstract: Circuits, devices and methods related to multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a first stage and a second stage, with each stage including a transistor. The PA assembly can further include a biasing circuit having a first bias path between a supply node and the base of a corresponding transistor. The PA assembly can further include a linearizing circuit implemented as either or both of a second bias path and a coupling path relative to the first bias path. The second bias path can be configured to provide an additional base bias current to the base under a selected condition. The coupling path can be configured to improve linearity of the corresponding transistor operating in a first mode while allowing a ballast resistance to be sufficiently robust for the corresponding transistor operating in a second mode.Type: ApplicationFiled: October 17, 2016Publication date: May 11, 2017Inventors: Jianxing NI, Michael Lynn GERARD, Ramanan BAIRAVASUBRAMANIAN, Dwayne Allen ROWLAND, Matthew Lee BANOWETZ
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Patent number: 9634619Abstract: Improved power amplifier (PA) bias circuit having parallel emitter follower. In some embodiments, a bias circuit for a PA can include a first bias path implemented to couple a base node of an amplifying transistor and a supply node, with the first bias path being configured to provide a base bias current to the base node. The PA can further include a second bias path implemented to be electrically parallel with the first bias path between the base node and the supply node. The second bias path can be configured to provide an additional base bias current to the base node under a selected condition.Type: GrantFiled: November 3, 2014Date of Patent: April 25, 2017Assignee: Skyworks Solutions, Inc.Inventors: Michael Lynn Gerard, Ramanan Bairavasubramanian, Dwayne Allen Rowland, Matthew Lee Banowetz
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Patent number: 9473076Abstract: Improved linearity performance for multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a first stage and a second stage, with each stage including a transistor. The PA assembly can further include a biasing circuit having a first bias path between a supply node and the base of a corresponding transistor. The PA assembly can further include a linearizing circuit implemented as either or both of a second bias path and a coupling path relative to the first bias path. The second bias path can be configured to provide an additional base bias current to the base under a selected condition. The coupling path can be configured to improve linearity of the corresponding transistor operating in a first mode while allowing a ballast resistance to be sufficiently robust for the corresponding transistor operating in a second mode.Type: GrantFiled: November 6, 2014Date of Patent: October 18, 2016Assignee: Skyworks Solutions, Inc.Inventors: Jianxing Ni, Michael Lynn Gerard, Ramanan Bairavasubramanian, Dwayne Allen Rowland, Matthew Lee Banowetz
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Publication number: 20150360609Abstract: A safety alert comprises a first vehicle with a microchip, a Global Position Satellite, and a second vehicle with a GPS monitor. The microchip broadcasts a signal through the GPS to the GPS monitor, alerting the second vehicle's driver that there is a first vehicle nearby, thereby reducing the likelihood of a collision.Type: ApplicationFiled: June 11, 2014Publication date: December 17, 2015Inventor: Roger Dwayne Allen
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Publication number: 20150349715Abstract: Improved power amplifier (PA) bias circuit having parallel emitter follower. In some embodiments, a bias circuit for a PA can include a first bias path implemented to couple a base node of an amplifying transistor and a supply node, with the first bias path being configured to provide a base bias current to the base node. The PA can further include a second bias path implemented to be electrically parallel with the first bias path between the base node and the supply node. The second bias path can be configured to provide an additional base bias current to the base node under a selected condition.Type: ApplicationFiled: November 3, 2014Publication date: December 3, 2015Inventors: Michael Lynn GERARD, Ramanan BAIRAVASUBRAMANIAN, Dwayne Allen ROWLAND, Matthew Lee BANOWETZ
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Publication number: 20150171797Abstract: Improved linearity performance for multi-mode power amplifiers. A power amplifier (PA) assembly can include a radio-frequency (RF) amplification path having a first stage and a second stage, with each stage including a transistor. The PA assembly can further include a biasing circuit having a first bias path between a supply node and the base of a corresponding transistor. The PA assembly can further include a linearizing circuit implemented as either or both of a second bias path and a coupling path relative to the first bias path. The second bias path can be configured to provide an additional base bias current to the base under a selected condition. The coupling path can be configured to improve linearity of the corresponding transistor operating in a first mode while allowing a ballast resistance to be sufficiently robust for the corresponding transistor operating in a second mode.Type: ApplicationFiled: November 6, 2014Publication date: June 18, 2015Inventors: Jianxing NI, Michael Lynn GERARD, Ramanan BAIRAVASUBRAMANIAN, Dwayne Allen ROWLAND, Matthew Lee BANOWETZ
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Patent number: 8852952Abstract: The invention provides droplet actuators and droplet actuator cassettes including reagent storage capabilities, as well as methods of making and using the droplet actuators and cassettes. The invention also provides continuous flow channel elements and techniques for using electrodes to manipulate droplets in flowing streams. The invention also discloses methods of separating compounds on a droplet actuator. Various other aspects of the invention are also disclosed.Type: GrantFiled: May 4, 2009Date of Patent: October 7, 2014Assignee: Advanced Liquid Logic, Inc.Inventors: Michael G. Pollack, Prasanna Thwar, Vamsee K. Pamula, Allen Eckhardt, Alexander Shenderov, Dwayne Allen, Vijay Srinivasan
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Publication number: 20140174933Abstract: A droplet actuator comprising: (a) a base substrate comprising electrodes configured for conducting droplet operations on a droplet operations surface thereof; (b) a droplet comprising one or more beads situated on the droplet operations surface; (c) a barrier arranged in relation to the droplet and the electrodes such that a droplet may be transported away from the beads using one or more droplet operations mediated by one or more of the electrodes while transport of the beads is restrained by a barrier.Type: ApplicationFiled: November 25, 2013Publication date: June 26, 2014Applicant: Advanced Liquid Logic, Inc.Inventors: ARJUN SUDARSAN, MICHAEL G. POLLACK, PRASANNA THWAR, DWAYNE ALLEN
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Patent number: 8591830Abstract: A droplet actuator comprising: (a) a base substrate comprising electrodes configured for conducting droplet operations on a droplet operations surface thereof; (b) a droplet comprising one or more beads situated on the droplet operations surface; (c) a barrier arranged in relation to the droplet and the electrodes such that a droplet may be transported away from the beads using one or more droplet operations mediated by one or more of the electrodes while transport of the beads is restrained by a barrier. Related methods and kits are also provided.Type: GrantFiled: August 25, 2008Date of Patent: November 26, 2013Assignee: Advanced Liquid Logic, Inc.Inventors: Arjun Sudarsan, Michael G. Pollack, Prasanna Thwar, Dwayne Allen
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Publication number: 20110303542Abstract: The invention relates to a droplet actuator with a substrate comprising electrodes arranged for conducting droplet operations on a droplet operations surface of the substrate; a filler fluid phase in contact with the droplet operations surface at least partially surrounding a droplet phase comprising a droplet arranged on one or more of the electrodes, the droplet comprising: (i) a target substance susceptible to loss from the droplet phase into the filler fluid phase; and (ii) an additive which reduces loss of the target substance to the filler fluid phase relative to a corresponding droplet not comprising the additive. The invention also relates to various compositions and methods.Type: ApplicationFiled: August 8, 2008Publication date: December 15, 2011Applicant: ADVANCED LIQUID LOGIC, INC.Inventors: Vijay Srinivasan, Michael G. Pollack, Vamsee K. Pamula, Dwayne Allen
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Publication number: 20110104816Abstract: The invention provides droplet actuators and droplet actuator cassettes including reagent storage capabilities, as well as methods of making and using the droplet actuators and cassettes. The invention also provides continuous flow channel elements and techniques for using electrodes to manipulate droplets in flowing streams. The invention also discloses methods of separating compounds on a droplet actuator. Various other aspects of the invention are also disclosed.Type: ApplicationFiled: May 4, 2009Publication date: May 5, 2011Applicant: ADVANCED LIQUID LOGIC, INC.Inventors: Michael G. Pollack, Prasanna Thwar, Vamsee K. Pamula, Vijay Srinivasan, Allen Eckhardt, Alexander Shenderov, Dwayne Allen
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Publication number: 20110104747Abstract: Methods of concentrating beads in a droplet and/or loading beads on a fluidic device are provided, including among other things, a method of concentrating beads in a droplet, the method comprising: (a) providing a droplet actuator comprising: (i) an interior droplet operations volume; and (ii) a reservoir exterior to the interior volume; (iii) a droplet established in a liquid path extending from the reservoir into the interior volume; (b) providing magnetically responsive beads in the portion of the droplet which is in the reservoir; (c) magnetically attracting the magnetically responsive beads through the liquid path into the portion of the droplet which is in the interior volume; and (d) forming a droplet comprising one or more of the magnetically responsive beads in the interior volume.Type: ApplicationFiled: March 9, 2009Publication date: May 5, 2011Applicant: ADVANCED LIQUID LOGIC, INC.Inventors: Michael G. Pollack, Ramakrishna Sista, Zhishan Hua, Vamsee K. Pamula, Arjun Sudarsan, Vijay Srinivasan, Prasanna Thwar, Alexander Shenderov, Dwayne Allen
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Publication number: 20110086377Abstract: A droplet actuator comprising: (a) a base substrate comprising electrodes configured for conducting droplet operations on a droplet operations surface thereof; (b) a droplet comprising one or more beads situated on the droplet operations surface; (c) a barrier arranged in relation to the droplet and the electrodes such that a droplet may be transported away from the beads using one or more droplet operations mediated by one or more of the electrodes while transport of the beads is restrained by a barrier. Related methods and kits are also provided.Type: ApplicationFiled: August 25, 2008Publication date: April 14, 2011Applicant: ADVANCED LIQUID LOGIC, INC.Inventors: Prasanna Thwar, Dwayne Allen, Philip Paik
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Patent number: 6952717Abstract: Document and message exchange can be facilitated using a Application Service Provider model. Assigning unique identifiers for data fields allows multiple databases to exchange information using relational databases. A project can be initiated and participants invited to collaborate using a distributed computing environment, such as the global Internet. Participants retain ownership of information by selecting the information to be shared, and optionally storing their information on databases restricted to them. Information is routed between collaborators using unique identifiers. Unique identifiers and their corresponding data fields can be mapped to a user's local computing area. Changes in documents and responses to documents can be monitored by inserting new records reflecting the changes into document tables.Type: GrantFiled: October 20, 2000Date of Patent: October 4, 2005Assignee: Emerging Solutions, Inc.Inventors: Dushan G. Monchilovich, Joshua D. Burt, Daniel T. Fossi, Dwayne Allen Emerick, Matthew E. Wheelis
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Patent number: 6216679Abstract: An ignition coil for an internal combustion engine improves high-voltage sealing performance and moreover reduces housing outer diameter. The ignition coil for an internal combustion engine is made up of a transformer portion of cylindrical configuration housed within a housing chamber of a case, a control-circuit portion, that is positioned on one end portion of this transformer portion, causing primary current of the transformer portion to be intermittent, and a connecting portion that is positioned on another end portion of the transformer portion, supplying secondary voltage of the transformer portion to a spark plug. A silicone rubber injection molding serves as the encapsulant while forming the high voltage boot to the plug.Type: GrantFiled: July 27, 1999Date of Patent: April 17, 2001Assignee: Delphi Technologies, Inc.Inventors: Albert Anthony Skinner, James Alva Boyer, Dwayne Allen Huntzinger
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Patent number: 5706792Abstract: A spark plug and ignition coil having concentrically wound primary and secondary coils about a plastic coated iron core are integrated in a dielectric fluid filled assembly characterized by advantageous employment of structurally inherent capacitances for radio frequency attenuation.Type: GrantFiled: December 10, 1996Date of Patent: January 13, 1998Assignee: General Motors CorporationInventors: James Alva Boyer, Dwayne Allen Huntzinger, Harry Oliver Levers, Jr., Albert Anthony Skinner, Richard Laurence Haisley, Raymond Ora Butler, Jr.