Bae Systems Information and Electronic Systems Integration Inc.

Oved Zucker

Simon Y London

Yannick C Morel

Vladimir P Leonov

Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.

Method and apparatus for digital synthesis of long multi-cycle microwave pulses

Conductor segments are positioned within a two conductor transmission line in order to generate microwave pulses. The conductor segments are switchably coupled to one or the other of the transmission lines in parallel. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments into the transmission lines. The induced waves travel uninterrupted along the transmission lines in a desired direction.

Method and apparatus for digital synthesis of microwaves

A system for direct optical control of electronic power semiconductors includes an optical triggering circuit at a first location, wherein said optical triggering circuit generates an optical trigger signal, a power circuit located at a second location remote from the first location, wherein said power circuit includes a photoconductor that is responsive to the optical trigger signal generated by the optical triggering circuit, and an optical cable coupling the optical triggering circuit to the power circuit. In operation, the power circuit is directly driven by the transmission of the optical trigger signal from the optical triggering circuit to the power circuit via the optical cable. Inductive elements or transformers may be applied to facilitate triggering performance.

Isolated control apparatus incorporating light controlled power semiconductors

A single fiber optic cable is configured as a multiplexer/demultiplexer that allows wavelengths to exit the fiber along its length and feed an optical sensor network in a cost efficient and space efficient manner. The fiber may be implemented as a multimode optical fiber that includes a plurality of Fiber Bragg Gratings that are tilted relative to the axis of the multimode fiber. Each grating is used to reflect multiple wavelengths of light out of the fiber depending on the diameter and the number of principal modes of the fiber. The plurality of FBGs allows light at multiple wavelengths to be extracted from the fiber at multiple locations along its length. At each location, reflected light at multiple wavelengths extracted from the multimode fiber may be fed through a plurality of fiber optic paths to optical sensors banks of optical sensors.

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Arlington, VA, United States of America

Oved Zucker