These antennas were designed and fabricated to handle high power microwave pulses at five different frequencies.

Outdoor diagonal horns were designed at S, C, X and Ku bands with gains ranging from 32 to 26 DB. These diagonal antennas presently handle peak pulsed power from 0.25 to 20 megawatts and average powers up to 7 kilowatt.

In addition, a conical horn (with 25 DB gain, 25 megawatts pulse power and 10 KW average power) handles the L band frequency. The diagonal horns yield essentially equal E and H beamwidths. Also vertical and horizontal polarizations are readily available in both diagonal and conical configurations.

The system utilizing these antennas is located at a large avionics firm in Sweden. It is used to test aircraft and electronic sub-systems under high electric field intensities at these frequencies.

Lenses are used at the output of these horns to adjust aperture phase distribution and contain internal sulphur hexaflorine gas.

Smaller antennas of the diagonal design are used for indoor testing.