The model ATS700M11G stacked log-periodic antenna from AR RF/Microwave Instrumentation supports EMI/RFI testing from 700 MHz to 10.5 GHz. It supplies the high-intensity electromagnetic (EM) fields needed for EMI/RFI testing within and outside of shielded rooms. It meets the needs of the IEC 61000-4-3 standard for the 1-to-6-GHz frequency range. In this range, the antenna provides 9 dBi or more gain while still meeting Uniform Field Area (UFA) requirements of 1.5 m square at a test distance of 3 m. The compact, lightweight, mobile antenna mounts easily on a tripod and is built to withstand the added demands of outdoor use.