Electromagnetic susceptibility testing apparatus

摘要

Frequency-dependent phase center movement in near-field, unshielded, electromagnetic susceptibility testing using a log-periodic dipole can be significantly reduced by bending the rearmost dipole elements forward. Each bent dipole element has an inner portion and an outer portion connected to each other at a bend, the inner portion extending outward from a boom in substantially perpendicular relation to the boom, and the outer portion extending obliquely outward and forward from the bend. The frequency range of the antenna can be extended by forming each element of the longest dipole with an undulating shape when viewed in a direction along the boom.