Experiment of low-frequency-compensated TEM horn antenna

The low-frequency-compensation principle for TEM-horn antenna was verified by experiment. The low frequency transmission and radiation characters were improved by the low-frequency-compensation. When the magnitudes and directions of the electric and magnetic dipoles were matched, the radiation in backward and sideward direction was obviously restrained. When the magnetic dipole moment made by low-frequency-compensation loop was large enough, the magnitude of radiation in forward direction would be enhanced and the low frequency component would be increased.