The Model 3150B Dual Stacked LPDA is a dual stacked log periodic array antenna (LPDA), with each of the two LPDAs being 100 Ω antennas. When arranged in parallel, the result is a 50 Ω input impedance array, which provides increased gain and low VSWR. The 3150B is suitable for situations where high fields need to be generated, such as military and automotive EMC applications. It can also be used as a receive antenna.

When combined with ETS‑Lindgren's 3159 or 3158 High Power Biconical Antennas, the 3150B becomes integral part of ETS‑Lindgren's high severity level immunity solution.