General Atomics, Inc.

The United States of America As Represented by the United States

John S deGrassie

Hiroyuki Ikezi

Yuh-Ren Lin-Liu

A high power multiple pulse generator includes a plurality of transmission line sections, adjacent sections of which are coupled together by a saturable inductor. One transmission line section is switchably connected to a load impedance through an output switch. With the output switch open, the coupled transmission line sections are charged to a desired voltage potential. A burst of multiple pulses is generated by closing the output switch, causing the charge on the transmission line section connected to the load through the closed switch to be delivered to the load as a first pulse. This first pulse has an amplitude equal to one half of the charging potential and a duration that is a function of the length of the transmission line section. Once this first pulse is delivered to the load, a voltage is developed across the saturable inductor coupling the discharged transmission line section with an adjacent charged transmission line section, causing current to flow therethrough. When the current flowing through the inductor reaches a certain amplitude, the saturable inductor saturates, effectively transferring the charge of the next transmission line section to the load as a second pulse. The interval between the first and second pulses is a function of the saturation time of the saturable inductor. This process continues with the number of pulses delivered to the load being equal to the number of transmission line sections.

Multiple pulse generator using saturable inductor

A pulse compressor for solitons includes a continuous dispersive non-linear propagation structure so constructed so that the wavefront of an individual soliton pulse is steepened. In addition, the pulse compressor has a continuously reduced time constant on a spatial, as opposed to a temporal basis. Various structures of the pulse compressor are described.

Soliton pulse compressor

A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other.

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Encinitas, CA, United States of America

John S deGrassie