The Department of Defense (DOD) is seeking proposals for an innovative low profile, foldable, high power microwave antenna. The objective is to develop a lightweight, affordable, and frequency-scalable antenna design to improve the performance of High Power Microwave (HPM) weapons. The antenna system must be capable of handling high power use up to 100 MW peak power and be waveguide fed. The technology is restricted under export control laws, and offerors must disclose any proposed use of foreign nationals. The key antenna parameters include operating frequency in the range of 1-20 GHz, reliable operation at peak power levels, maximum possible gains, and a foldable design for stowage and transportation. The project will be conducted in three phases: Phase I involves consultation and design strategies, Phase II includes building and testing the antenna subsystem at low power, and Phase III focuses on high-power testing and characterization. The work in Phase II and III may become classified. The selected contractor must be U.S. owned and operated with no foreign influence. The proposal submission deadline is February 21, 2024. For more information, visit the solicitation link: DOD SBIR 24.1 BAA.