Hrl Laboratories, LLC

Other

Richard P Berg

James H Schaffner

Daniel Frederic Sievenpiper

Matthew W Ganz

Christopher Paul Henry

David M Pepper

Walter S Wall

Carson R White

Tsung-Yuan Hsu

David S Sumida

Floyd L Berg

Tethered Unmanned Aircraft Antenna utilizing a Vertical Take Off and Landing (VTOL) Unmanned Aerial System (UAS) which may be provided by quadcopter drone (for example) constrained by a tether connected at one end to a maritime or land-based platform, the tether also being used as a RF antenna. The tether is capable of transmitting DC power to the UAS or drone at a desired antenna height and simultaneously supports RF transmission power with the help of a DC power isolation circuit. The tether is desirously lightweight and corona resistant.

Tethered unmanned aircraft antenna

A chaff element for interfering with radar signals. The chaff element has a dielectric substrate and a pair of elongate electrically conductive elements, having a total length of approximately one-half wavelength of the radar signals or otherwise tuned to the radar signals, disposed on the dielectric substrate. A switch is arranged to electrically couple the pair of elongate elements together in response to a control signal generated by an oscillator circuit and a battery. The chaff element can be used in a method of providing a countermeasure against radar signals. A plurality of chaff elements can be deployed in an airspace above a radar unit emitting a radar signal and interfere with the radar signal by opening and closing the switches of the chaff elements while deployed in said airspace above the radar unit.

Smart chaff

An optical time delay module has a plurality of time delay elements connected in a series and a plurality an optical output couplers wherein each of said optical output couplers is operationally connected between one or more time delay elements in said series, the optical output couplers providing a plurality of optical outputs from said module with different optical delays controlled by an analog voltage.

Optical tapped time delay modules and arrays

The disclosed technology provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with the disclosed technology, two optical beams emanate from transceivers at two different locations. Each beam may not see the other beam point of origin (non-line-of-sight link), but both beams can see a third platform that contains the system of the disclosed technology. Each beam incident on the interconnection system is directed into the reverse direction of the other, so that each transceiver will detect the beam which emanated from the other transceiver. The system dynamically compensates for propagation distortions preferably using closed-loop optical devices, while preserving the information encoded on each beam.

Dynamic optical interconnect system reference signal formation

An optically controlled mechanical device actuated by electrostatic forces. The device includes electrostatic plates disposed on opposing portions of the device to accumulate charge; conductors to conduct charge to the electrostatic plates from a bias supply; and a photoelectric element having a photoresistive element arranged to affect a quantity of charge reaching the electrostatic plates from the bias supply. The device is caused to actuate to one position when the photoresistive element is exposed to a first level of illumination, and to a another position when the photoresistive element is exposed to a different second level of illumination.

Optically controlled MEMS devices

An indicating system for a washing device having has at least one rack for holding articles during the washing of same and a door for gaining access to the articles. The indicating system includes a detector for sensing whether or not the rack holds articles and logic circuits responsive to the detector and to the operating state of the washer for providing an indication that the articles have been cleaned when a predetermined operating state is detected and for providing an indication that any articles in the washer are not clean after the detector senses that the articles in the rack were removed from the at least one rack.

Growing community of inventors

Driggs, ID, United States of America

Richard P Berg