The Diamond Engineering Reference Horn Antenna has been designed to eliminate the need for multiple reference antennas when testing a broad frequency spectrum. Capable of operating from 700mhz to 26ghz while being completely system compatible, it is ideal for measurements or communications. Unlike most other reference horns on the market, the impedance is 50 ohms from DC to the band. Additionally, the Diamond Engineering reference horn also features a dielectric lens which dramatically improves beam profile and gain. In fact, the gain actually increases with frequency, similar to true aperture gain! The excellent match and monotonic gain provides the combination of application and performance.