The 15H3.5CTWR51 horn antenna operates from 15–22 GHz with 15 dB gain and a maximum VSWR of 1.24, featuring an integrated 3.5 mm coax-to-WR51 adapter in a compact design. Equipped with an FBP180 (UBR180) flange and supporting 50 W CW / 3 kW peak power, it is ideal for high-performance microwave systems and precision measurement environments.