Nuvotronics, LLC

United States of America As Represented by the Secretary of the Air Force

James Robert Reid

David W Sherrer

John S Derov

Paul H Carr

Structures, materials, and methods to control the spread of a solder material or other flowable conductive material in electronic and/or electromagnetic devices are provided.

Devices and methods for solder flow control in three-dimensional microstructures

The present invention relates generally to digital elliptic filters, and more particularly, but not exclusively to multi-layer digital elliptic filters and methods for their fabrication.

Multi-layer digital elliptic filter and method

A reconfigurable photoconducting antenna is created on a semiconductor substrate. At equilibrium, the semiconductor is semi-insulating, and therefore appears as a dielectric. Illuminating a region of the substrate results in the generation of free carriers in the substrate and allows the creation of a conductive region (semi-metallic) in the substrate. This conductive region functions as the radiating element of the antenna. Controlling the pattern of the illuminated region directly controls the pattern of the radiating antenna. By using a digital micromirror device (DMD&trade;) to control the pattern of the light, a desired antenna design may be placed on the semiconductor substrate. The pattern can be dynamically adjusted simply by changing the position of the individual mirrors in the DMD&trade; array. The device operates through a standardized digital interface and can be switched between patterns in a period of approximately 20 microseconds. The pattern of the DMD&trade; can therefore be readily and easily controlled through the use of a digital control system.

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Billerica, MA, United States of America

James Robert Reid