https://aerospace.honeywell.com/us/en/products-and-services/products/electromagnetic-defense/antennas/spiral/cavity-backed-spiral-antenna-model-ast-1462a-aa.view-all
Cavity Backed Spiral Antenna Model AST-1462A, AA | Honeywell Aerospace
AST-1462A antenna offers circular polarization, broadband gain, and low axial ratio for airborne EW and radar warning applications.
cavitybackedspiralantennamodel