The ETS-Lindgren Model 3115 Double Ridged Waveguide Antenna is a linearly polarized broadband antenna covering the frequency range of 750 MHz to 18GHz. The Model 3115 is designed specifically for EMI measurements and specifications compliance testing. However, it may also be utilized for antenna gain, pattern measurement, surveillance and other applications.

The Model 3115 is ideally suited for IEC 61000-4-3 and MIL-STD 461E immunity tests as well as ANSI C634 and EM 55033 emissions testing.