A hybrid antenna having an active array on a tracking pedestal is configured to facilitate simultaneous multibeam operation with first and second satellites. The hybrid antenna system includes a pedestal having a base and a support pivotally mounted with respect to the base about a first axis, a one-dimensional active electronically scanned array (AESA) configured to scan along a scanning plane and rotatably mounted on the support about a skew axis, and a skew positioner configured to rotate the AESA about the skew axis for aligning the scanning plane with the first and second satellites to facilitate the simultaneous multibeam operation with the first and second satellites. A method of using the hybrid antenna having an active array on a tracking pedestal is also disclosed.

A pedestal is provided for mounting a portable antenna onto a platform. The pedestal includes a base, a horn and a prong composed of three-dimensionally printable composite resin. The base includes an outer tube having a pair of axially distributed outer holes. The horn includes an inner tube for insertion into the outer tube and an inverted pyramid that connects to the inner tube. The inner tube includes at least three axially distributed inner holes. The prong has two probes that insert into the outer holes and two of the inner holes to secure the horn to the base.

An antenna arrangement includes a directional antenna assembly, the directional antenna assembly comprising a directional antenna intended to be mounted on an interface delimited by a stationary support structure, the directional antenna generally extending according to a main axis perpendicular to the plane defined by the interface, wherein the antenna arrangement further comprises a rotatable base mounted on the interface, the rotatable base comprising a pole integral with the rotatable base, the pole extending in the direction of the main axis, the rotatable base being rotatable about the main axis 11, a rotation of the rotatable base actuating the rotation of the pole about the main axis.

The disclosed structures and methods are directed to antenna systems configured to transmit and receive a wireless signal in and from different directions. An antenna for transmission of electromagnetic (EM) waves comprises a phased array and a metastructure. The phased array has radiated elements configured to radiate the EM waves. The metastructure is located at a phased array distance from the phased array to receive the EM waves at the first angle and to transmit the EM waves at a second angle, the second angle being larger than the first angle. The metastructure comprises three impedance layers arranged in parallel to each other and each impedance layer comprising a plurality of metallization elements. Each metallization element has a first dipole and a pair of first capacitance arms located on each end of the first dipole approximately perpendicular to the first dipole.

The disclosed structures and methods are directed to antenna systems configured to transmit and receive a wireless signal in and from different directions. An antenna for transmission of electromagnetic (EM) waves comprises a phased array and a metastructure. The phased array has radiated elements configured to radiate the EM waves. The metastructure is located at a phased array distance from the phased array to receive the EM waves at the first angle and to transmit the EM waves at a second angle, the second angle being larger than the first angle. The metastructure comprises three impedance layers arranged in parallel to each other and each impedance layer comprising a plurality of metallization elements. Each metallization element has a first dipole and a pair of first capacitance arms located on each end of the first dipole approximately perpendicular to the first dipole.

A rollable mast system couplable to an undersea vehicle includes a mast made of a bi-stable composite material configured to roll onto itself in a first state and to stiffen into an elongated stable shape in a second state, and a head structure coupled to a distal end of the mast. The rollable mast system further includes a spool configured to support at least a portion of the bi-stable composite material in its first state and a roller in contact with the bi-stable composite material and configured to pay out the bi-stable composite material from the spool in a direction away from a hull of the undersea vehicle. The bi-stable composite material is in the first state as it passes from the spool to the roller, and the bi-stable composite material is in the second state after it passes the roller.

A rollable mast system couplable to an undersea vehicle includes a mast made of a bi-stable composite material configured to roll onto itself in a first state and to stiffen into an elongated stable shape in a second state, and a head structure coupled to a distal end of the mast. The rollable mast system further includes a spool configured to support at least a portion of the bi-stable composite material in its first state and a roller in contact with the bi-stable composite material and configured to pay out the bi-stable composite material from the spool in a direction away from a hull of the undersea vehicle. The bi-stable composite material is in the first state as it passes from the spool to the roller, and the bi-stable composite material is in the second state after it passes the roller.

A communication system using vector and scalar potential is disclosed. The system uses field-free potentials signaling for many applications where the absence of shielding effects in sea water, plasma or other dense media due to the fact that the absence of (E,B) fields eliminates the possibility of induced charge and current response in the media being transited.

An inflatable mast couplable to an underwater vehicle includes a flexible material defining an interior volume, a head structure, and a spring coupled to at least one of the flexible material and the head structure. The flexible material is designed to be filled with air to form an inflated mast structure that extends away from the underwater vehicle. The head structure is disposed at a distal end of the inflated mast structure and in some cases has a rigid shape that forms a panel having an outer surface that is flush with an outer surface of the underwater vehicle, when the mast structure is deflated and stowed. The spring is designed to provide a tensile force on at least one of the flexible material and the head structure when the flexible material is inflated to form the mast structure. A system includes the inflatable mast and a pump.

An inflatable mast couplable to an underwater vehicle includes a flexible material defining an interior volume, a head structure, and a spring coupled to at least one of the flexible material and the head structure. The flexible material is designed to be filled with air to form an inflated mast structure that extends away from the underwater vehicle. The head structure is disposed at a distal end of the inflated mast structure and in some cases has a rigid shape that forms a panel having an outer surface that is flush with an outer surface of the underwater vehicle, when the mast structure is deflated and stowed. The spring is designed to provide a tensile force on at least one of the flexible material and the head structure when the flexible material is inflated to form the mast structure. A system includes the inflatable mast and a pump.