Realization of a transmit system using T/R modules applied in the demonstrator of S band active antenna

The paper presents realization, mechanical solution and measurements results of a transmit system used in the Demonstrator of S-band Active Antenna. The transmit system contains T/R modules, where individual module supplies half of antenna row of planar array. The 16 antenna rows form cosecant squared radiation antenna pattern. Brief description of the whole transmit path with special attention to T/R modules is provided. The results of antenna pattern measurements on a tower setup are shown. Additional information about Power Supply System and Cooling System are described as well.