Bae Systems Information and Electronic Systems Integration Inc.

Other

Alexander B Kozyrev

Simon Y London

Yannick C Morel

John E McGeehan

Somnath Sengupta

Yeuan-Ming Sheu

Clint J Novotny

Stuart E Clark

Mark T Walter

The current disclosure is directed to a radar system. More particularly, the current disclosure relates to a fabrication of aperture-matched array of TEM horn antenna system and use of the same. Specifically, the current disclosure is directed to a compact and lightweight impulse radiating TEM array antenna system with high forward-to-back lobe ratio. Furthermore, the current TEM horn antenna system shows radiation efficiency close to 1 at the frequency bands between 150 and 250 MHz. More particularly, the current disclosure provides transverse electromagnetic (TEM) horn antenna including a curved surface extending arcuately at least 180&#xb0; degrees from an antenna aperture opening defined at a signal-receiving forward end of a horn structure, wherein the curved surface is adapted to suppress large back-lobe properties.

Transverse electromagnetic horn antenna having a curved surface

A tunable frequency transmission line pulse forming network circuit for forming a waveform having a spectral content. The pulse forming network circuit comprises a dielectric material; a ground section; a stepped shaped charged section, with the charged section having a plurality of stages including a first stage; a power supply coupled to the pulse forming network circuit for charging the pulse forming network circuit; a switch coupled to the pulse forming network circuit for periodically discharging the pulse forming network circuit; and an antenna coupled to the pulse forming network circuit for propagating a high-power microwave signal from the pulse forming network circuit into the environment. At least the first stage of pulse forming network circuit has one of a tunable magnetic material and a nonlinear magnetic which facilitates adjusting the waveform and the spectral content of the waveform emitted by the pulse forming network circuit into the surrounding environment.

Tunable-frequency pulse forming networks for high power microwave applications

A steerable high-power microwave beam array includes an optical sub-system comprising a laser and an optical time delay unit and a parallel set of RF time delay units. The optical system and/or the RF delay subsystem are utilized to precisely delay the pulses from the microwave antenna elements to provide steerable beam forming.

High-power microwave beam steerable array and related methods

A method for generating high power pulsed RF waveforms comprises the steps of charging a transmission line in a pulse forming network with a high-voltage and discharging the voltage on the transmission line to ground utilizing a gallium nitride photoconductive switch.

Generation of flexible high power pulsed waveforms

A system and method for generating high power pulses including a photoconductive semiconductor switch (PCSS), a laser for triggering the PCSS and a bipolar pulse generator coupled to the PCSS. The bipolar pulse generator is activated when the PCSS is triggered. A bipolar pulse is generated by the activated bipolar pulse generator. A modulator unit modulates the bipolar pulse to create a modulated bipolar pulse. The modulator unit is a nonlinear transmission line (NLTL).

System and method for generating high power pulses

A systems, pulse generators, apparatus and methods for generating a high power signal are presented. A pulse generator includes a generator and a modulator unit. The generator generates a bipolar signal. The modulator unit modulates the bipolar signal with oscillating signals to generate a modulated bipolar signal with oscillating portions. The frequency spectrum of the modulated bipolar signal contains very little to no direct current (DC) component.

Growing community of inventors

Rockville, MD, United States of America

Alexander B Kozyrev