Abstract: Disclosed is a switchable transmit and receive phased array antenna (“STRPAA”). As an example, the STRPAA may include a housing, a multilayer printed wiring board (“MLPWB”) within the housing having a top surface and a bottom surface, a plurality of radiating elements located on the top surface of the MLPWB, and a plurality of transmit and receive (“T/R”) modules attached to the bottom surface of the MLPWB. The STRPAA may also include a plurality of vias, wherein each via, of the plurality of vias, passes through the MLPWB and is configured as a signal path between a T/R module, of the plurality of T/R modules, on the bottom surface of the MLPWB and a radiating element, of the plurality of radiating elements, located on the top surface of the MLPWB opposite the T/R module.

Abstract: Disclosed is a switchable transmit and receive phased array antenna (“STRPAA”). As an example, the STRPAA may include a housing, a multilayer printed wiring board (“MLPWB”) within the housing having a top surface and a bottom surface, a plurality of radiating elements located on the top surface of the MLPWB, and a plurality of transmit and receive (“T/R”) modules attached to the bottom surface of the MLPWB. The STRPAA may also include a plurality of vias, wherein each via, of the plurality of vias, passes through the MLPWB and is configured as a signal path between a T/R module, of the plurality of T/R modules, on the bottom surface of the MLPWB and a radiating element, of the plurality of radiating elements, located on the top surface of the MLPWB opposite the T/R module.

Abstract: Antenna unit cells suitable for use in antenna arrays are disclosed, as are antenna array and mounting platform such as an aircraft comprising antenna unit cells. In one embodiment, an antenna unit cell comprises a dielectric substrate having a length extending along a first axis and a width extending along a second axis, a first plurality of radiating elements disposed on a first side of the dielectric substrate, and a second plurality of radiating elements disposed on a second side of the dielectric substrate, opposite the first side, wherein the second plurality of radiating elements extend to an edge of the unit cell, and the first plurality of radiating elements overlap portions of the second plurality of radiating elements. Other embodiments may be described.

Abstract: A antenna aperture having electromagnetic radiating elements embedded in structural wall portions of a honeycomb-like core. Independent wall sections each having a plurality electromagnetic radiating elements are formed into the honeycomb-like core. Feed portions of each radiating element form teeth that are copper plated before being assembled onto a back skin panel. Each of the teeth are then generally machined flush with a surface of the back skin to present electrical contact pads which enable electrical coupling to each of the radiating elements by an external antenna electronics board.