USA As Represented by Secretary of the Navy

Michael Patrick Daly

Justin James

John W Rockway

John Harold Meloling

Stephen Douglas Russell

Ayax D Ramirez

Aldo Monges

Marcos Ontiveros

Justin O'Neal James

A method for beam steering and beam forming an antenna is disclosed herein that includes illuminating an optical fiber with a light source, thereby transmitting a signal through the optical fiber to an electro-optical switch. The electro-optical switch is actuated with the signal from the light source, thereby switching an electrical load in the electro-optical switch. At least one antenna element in an array of antenna elements is excited with RF radiation radiated by a driven element via an RF transmission line and reradiated from parasitic elements, thereby beam steering and beam forming the antenna.

Beam steering and beam forming an antenna

A method and system are discussed for providing Unequal Error Protection (UEP) for heterogeneous multi-service provisioning. A transmitter in a network may determine a current status of the network. The transmitter may adaptively adjust a current asymmetric signal constellation and a current channel Forward Error Correction (FEC) coding rate based on the determined current status of the network, and initiate transmission of multi-service data, using the adaptively adjusted asymmetric signal constellation and the adaptively adjusted FEC coding rate for transmission of the multi-service data, based on hybrid Unequal Error Protection (UEP) transmission.

Hybrid unequal error protection (UEP) for heterogeneous multi-service provisioning

A transmitter adjustment value for adjusting modulations at a transmitter may be determined. The transmitter may be configured to transmit in accordance with an asymmetric signal constellation, based on the determined transmitter adjustment value. A legitimate receiver may be provided with a receiver adjustment value corresponding to the determined transmitter adjustment value. At the transmitter, scrambled transmissions may be transmitted, based on transmitting using the determined transmitter adjustment value.

Transmission security based on adaptive multiresolution modulation

A transmitter in a network transmits transmissions in accordance with an asymmetric signal constellation. A channel impairment in the network is detected. In response, a transmitter adjustment value for adjusting modulations at the transmitter is determined, the transmitter adjustment value determined to increase asymmetry of the asymmetric signal constellation. Signal acquisition may be improved by transmitting, at the transmitter, transmissions, based on transmitting using the determined transmitter adjustment value.

Enhanced signal acquisition based on adaptive multiresolution modulation

An aspect of the present invention is drawn to a communication system that includes an electrically steerable parasitic array transmitter antenna, a transmitter driver, an electrically steerable parasitic array receiver antenna, and a receiver driver. The transmitter driver is arranged such that it is operable to enable the electrically steerable parasitic array transmitter antenna to transmit a beam having a first directional vector at a first time, a second directional vector at a second time, and an ndirectional vector at an ntime. The receiver driver is arranged such that it is operable to enable the electrically steerable parasitic array receiver antenna to receive a beam having a third directional vector at a third time, a fourth directional vector at a fourth time, and an mdirectional vector at an mtime.

Method for multiple-input multiple-output communication using single port radiation pattern reconfigurable antennas

An antenna comprising: a loop made of conductive material; two baluns connected to, and intersecting, opposing sides of the loop, wherein each balun has an output; a 180&#xb0; hybrid coupler having two input ports, a sum output port, and a delta output port, wherein the two input ports are connected to the outputs of the baluns; a first low noise amplifier (LNA) connected to the sum output port; a second LNA connected to the delta output port; first and second receivers connected to the first and second LNAs respectively; and wherein the antenna is electrically small and is designed to simultaneously receive wideband signals in real time from 3 to 30 MHz.

High frequency simultaneous metrics antenna (HF-SIMANT)

An antenna comprising: a ground plane having a center; six receive ports mounted to the ground plane in a circular configuration around the center and separated from each other by approximately 60 degrees; three conductive half-loops, disposed in mutually orthogonal planes, wherein each half-loop has two ends that are connected to separate receive ports; and three 180&#xb0; hybrids, each 180&#xb0; hybrid having two input ports, a delta output port, and a sum output port, wherein the two input ports of each 180&#xb0; hybrid are connected to the two receive ports of one of the half-loops.

Growing community of inventors

San Diego, CA, United States of America

Michael Patrick Daly