TEM Horn Antenna Design Principles

Certain antennas on the market today are used for electromagnetic compatibility measurements such as radiated immunity and emissions testing. These are designed to cover a broad frequency spectrum while maintaining specified directional properties. However, trying to meet both criteria leads to distortion either in the phase or amplitude properties of the incoming signal. Designing an antenna with desired qualities in the time-domain will translate to an antenna with a broadband response in the frequency domain.