Patents by Inventor Benjamin Fasenfest

Benjamin Fasenfest 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).

  • High efficiency photoconductive semiconductor switch-based amplifier for high power microwave transmission
    Patent number: 11784616
    Abstract: Power amplifier apparatuses and techniques for optimizing the design of power amplifiers are disclosed. In one aspect, a method for optimizing a power amplifier includes selecting a circuit topology for the power amplifier. The circuit topology includes one or more photoconductive switches and an impedance matching network including one or more parameter values representative of the impedance matching network or the photoconductive switches that can be adjusted. The method further includes selecting one or more optimization goals for the impedance matching network and the one or more photoconductive switches, and adjusting the one or more parameter values according to the one or more optimization goals. The one or more optimization goals include an efficiency at a particular power output.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: October 10, 2023
    Assignees: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, SOCAL SIMULATIONS, LLC
    Inventors: Tammy Chang, Adam Conway, Victor Valeryevich Khitrov, Lars Voss, Benjamin Fasenfest, Peter Asbeck
  • HIGH EFFICIENCY PHOTOCONDUCTIVE SEMICONDUCTOR SWITCH-BASED AMPLIFIER FOR HIGH POWER MICROWAVE TRANSMISSION
    Publication number: 20220069785
    Abstract: Power amplifier apparatuses and techniques for optimizing the design of power amplifiers are disclosed. In one aspect, a method for optimizing a power amplifier includes selecting a circuit topology for the power amplifier. The circuit topology includes one or more photoconductive switches and an impedance matching network including one or more parameter values representative of the impedance matching network or the photoconductive switches that can be adjusted. The method further includes selecting one or more optimization goals for the impedance matching network and the one or more photoconductive switches, and adjusting the one or more parameter values according to the one or more optimization goals. The one or more optimization goals include an efficiency at a particular power output.
    Type: Application
    Filed: March 16, 2021
    Publication date: March 3, 2022
    Inventors: Tammy Chang, Adam Conway, Victor Valeryevich Khitrov, Lars Voss, Benjamin Fasenfest, Peter Asbeck
  • Instantaneous in-line heating of samples on a monolithic microwave integrated circuit microfluidic device
    Patent number: 10123380
    Abstract: A micro-electro-mechanical system for heating a sample including a substrate, a micro-channel flow channel in the substrate, a carrier fluid within the micro-channel flow channel for moving the sample in the micro-channel flow channel, and a microwave source that directs microwaves onto the sample in the micro-channel flow channel for heating the sample. The carrier fluid and the substrate are made of materials that are not appreciably heated by the microwaves. The microwave source includes conductive traces or strips and a microwave power source connected to the conductive traces or strips.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: November 6, 2018
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Neil Reginald Beer, Benjamin Fasenfest, John Chang
  • Instantaneous In-Line Heating of Samples on a Monolithic Microwave Integrated Circuit Microfluidic Device
    Publication number: 20100089907
    Abstract: A micro-electro-mechanical system for heating a sample including a substrate, a micro-channel flow channel in the substrate, a carrier fluid within the micro-channel flow channel for moving the sample in the micro-channel flow channel, and a microwave source that directs microwaves onto the sample in the micro-channel flow channel for heating the sample. The carrier fluid and the substrate are made of materials that are not appreciably heated by the microwaves. The microwave source includes conductive traces or strips and a microwave power source connected to the conductive traces or strips.
    Type: Application
    Filed: April 30, 2009
    Publication date: April 15, 2010
    Inventors: Neil Reginald Beer, Benjamin Fasenfest, John Chang