Lawrence Livermore National Security, LLC

Socal Simulations, LLC

Benjamin J Fasenfest

Lars F Voss

Adam M Conway

Peter M Asbeck

Tiziana C Bond

Neil Reginald Beer

Mihail Bora

John Chang

Victor V Khitrov

Tammy Chang

Elaine M Behymer

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.

High efficiency photoconductive semiconductor switch-based amplifier for high power microwave transmission

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.

Instantaneous in-line heating of samples on a monolithic microwave integrated circuit microfluidic device

Tunable plasmon resonant cavity arrays in paired parallel nanowire waveguides are presented. Resonances can be observed when the waveguide length is an odd multiple of quarter plasmon wavelengths, consistent with boundary conditions of node and antinode at the ends. Two nanowire waveguides can satisfy the dispersion relation of a planar metal-dielectric-metal waveguide of equivalent width equal to the square field average weighted gap. Confinement factors of over 10are possible due to plasmon focusing in the inter-wire space.

Plasmon resonant cavities in vertical nanowire arrays

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Union City, CA, United States of America

Benjamin J Fasenfest