Abstract: A method of making a reconfigurable antenna comprises the steps of applying one or more first layers of a prepreg laminate fabric to a form having a desired contour; applying a pattern corresponding to an antenna shape to the first layers of prepreg fabric; applying one or more second layers of the prepreg laminate fabric atop the pattern to form a laminate stack; curing the laminate stack; and removing the pattern to form channels in the antenna shape. The desired contour may be an aircraft skin panel or an airfoil panel. The pattern may be a polymer sheet with an applied cPLA antenna design. The curing step may be performed in a vacuum bag under the application of vacuum and heat. The removing step may be performed by heating the cured laminate stack to remove the pattern.

Abstract: A reconfigurable antenna comprises a panel having a liquid metal pump coupled to a power supply; a liquid metal reservoir in fluid communication with the pump; one or more channels for transporting the liquid metal, each of the one or more channels having a proximal end in fluid communication with the pump, each of the one or more channels having a vent at a distal end, wherein application of power to the pump moves the liquid metal into or out of the channels thereby reconfiguring the antenna. The pump may be a pneumatic pump or a magnetohydrodynamic pump, and a layer of a phosphonic acid may be included on the liquid metal-bearing surfaces of the channels. The phosphonic acid may be decylphosphonic acid (DPA), fluorobenzylphosphonic acid (FPA), or difluorobenzylphosphonic acid (DFPA), and one or more sensors may be coupled to the panel for determining the position of the liquid metal in the channels.

Abstract: The geo-security method and system uses spatio-temporal radio channel information during authentication to grant permission to access, use and/or operate the intended device. The geo-security method and system uses a wideband radio channel impulse response (or transfer function of radio channel) from antenna of RF source to antenna of a RF receiver at the device position to determine the legitimacy of the intended device's location.

Abstract: The reconfigurable radio direction finder system and method uses a reconfigurable antenna to electronically cycle through a plurality of different antenna configurations to determine a signal direction. Specifically, the reconfigurable antenna is cycled through N different antenna configurations, where N is an integer greater than one, where each antenna configuration has a pointing direction associated therewith defined by an elevation angle ?n of an n-th antenna configuration, where n is an integer between 1 and N, and an azimuthal angle ?n of the n-th antenna configuration. A received signal strength of the radio signal is measured for each of the antenna configurations as a power output of the n-th antenna configuration, Pn.

Abstract: The geo-security method and system uses spatio-temporal radio channel information during authentication to grant permission to access, use and/or operate the intended device. The geo-security method and system uses a wideband radio channel impulse response (or transfer function of radio channel) from antenna of RF source to antenna of a RF receiver at the device position to determine the legitimacy of the intended device's location.

Abstract: The reconfigurable radio direction finder system and method uses a reconfigurable antenna to electronically cycle through a plurality of different antenna configurations to determine a signal direction. Specifically, the reconfigurable antenna is cycled through N different antenna configurations, where N is an integer greater than one, where each antenna configuration has a pointing direction associated therewith defined by an elevation angle ?n of an n-th antenna configuration, where n is an integer between 1 and N, and an azimuthal angle ?n of the n-th antenna configuration. A received signal strength of the radio signal is measured for each of the antenna configurations as a power output of the n-th antenna configuration, Pn.

Abstract: An antenna device includes a dielectric layer, an electrical ground layer carried on one side of the dielectric layer, and an antenna arrangement carried on another side of the dielectric layer. This arrangement includes two parasitic microstrip elements and a microstrip signal element. The signal element is structured to radiate an electromagnetic signal in response to application of a corresponding electrical communication signal. The parasitic antenna elements extend along opposing longitudinal sides of the signal element and each includes an adjustable component operatively connected between two microstrips. The adjustable component is structured to selectively adjust operable length of a selected one of the parasitic antenna elements to change a maximum radiation direction of the antenna device.