An aircraft includes a fuselage, wings coupled to the fuselage, and a transceiver. The aircraft further includes a plurality of planar phased array antennas coupled to the transceiver and fixedly attached to the fuselage or to at least one of the wings. The plurality of planar phased array antennas include a first planar phased array antenna having a first normal vector and a second planar phased array antenna having a second normal vector. The first normal vector is not parallel to the second normal vector.

A structural panel of an aircraft is constructed with a multiphase antenna embedded inside the structural panel between multiple sheets of fiberglass.

An antenna system may include a first antenna, and a second antenna opposite the first antenna, wherein the first antenna and the second antenna are configured to provide omnidirectional coverage.

A component including a substrate with dielectric coating on the substrate. The electrical reactance of the dielectric coating configured for the propagation of electromagnetic surface waves. The dielectric coating is arranged as a plurality of discrete pathways. Also a signal transmission system including a component, an electromagnetic surface wave transmitter coupled to the substrate, and an electromagnetic surface wave receiver also coupled to the substrate.

A system for bistatic radar target detection employs an unmanned aerial vehicle (UAV) having a ramjet providing supersonic cruise of the UAV. Deployable antenna arms support a passive radar receiver for bistatic reception of reflected radar pulses. The UAV operates with a UAV flight profile in airspace beyond a radar range limit. The deployable antenna arms have a first retracted position for supersonic cruise and are adapted for deployment to a second extended position acting as an airbrake and providing boresight alignment of the radar receiver. A mothership aircraft has a radar transmitter for transmitting radar pulses and operates with an aircraft flight profile outside the radar range limit. A communications data link operably interconnects the UAV and the tactical mothership aircraft, transmitting data produced by the bistatic reception of reflected radar pulses in the UAV radar antenna to the mothership aircraft.

An integrated slot waveguide antenna array for a radar system. The antenna array may include substrate integrated waveguide (SIW) elements, transmit, receive and processing electronics in a lightweight, low-cost, highly integrated package. The combination of antenna layout, specific dimensions of SIW features, including vias, terminal edges and slot placement may allow an efficient transmit and receive radar pattern as well as consistent, reliable and low cost manufacturing.

An aircraft includes a fuselage, wings coupled to the fuselage, and a transceiver. The aircraft further includes a plurality of planar phased array antennas coupled to the transceiver and fixedly attached to the fuselage or to at least one of the wings. The plurality of planar phased array antennas include a first planar phased array antenna having a first normal vector and a second planar phased array antenna having a second normal vector. The first normal vector is not parallel to the second normal vector.

In some embodiments, an antenna may include a plurality of reflectarray tiles and a frame including a plurality of frame elements coupled electrically and mechanically. The frame may be configured to conform to a shape of a surface. Each frame element may be configured to receive one of the plurality of reflectarray tiles. In some aspects, the plurality of reflectarray tiles may be illuminated directly or indirectly by a feed.

A system includes a septum sleeve, an aperture fitting, and a removable aperture. The septum sleeve is substantially hollow and is configured to be positioned at least partially within a core of an assembly of an aircraft. The aperture fitting is configured to provide an interface to mechanically fasten the removable aperture. The removable aperture is configured to contain one or more electronic components and to be removably positioned at least partially within the septum sleeve.

A radio frequency quad hat system for decreasing transmission power when conducting tests on aircraft when the aircraft is on ground, the aircraft having two wings and two stabilizers, each wing having a leading edge transmitting conformal IFF antenna and each stabilizer having a trailing edge transmitting conformal IFF antenna. The system includes two forward hats, each forward hat corresponding to a leading edge transmitting conformal IFF antenna, the forward hats comprising of frequency selective material and three dipoles; and, two aft hats, each aft hat corresponding to a trailing edge transmitting conformal IFF antenna, the aft hats comprising of frequency selective material and three dipoles, the two forward hats and the aft hats able to transmit and receive communications at a decreased transmission level during testing.