Southern Microwave Inc.

Southern Microwave, Inc. (SMI), a subsidiary of Electro Technik Industries (ETI), is an ISO 9001:2015-certified manufacturer specializing in high-performance RF ferrite isolators and circulators for commercial and military applications. Located in a 5,000 sq. ft. facility in Riviera Beach, Florida, SMI has delivered over 500,000 units, leveraging advanced design processes and premium materials to ensure reliable performance across demanding environmental conditions. SMI’s product line includes coaxial, drop-in, and surface-mount isolators and circulators covering 450 MHz to 16 GHz, with both COTS and Hi-Rel options available. As part of ETI’s RF/Microwave group—which includes leading brands such as Star Microwave, Nova Microwave, RF Techniques, and Res-Net Microwave—SMI offers flexible, cost-effective solutions, including in-house machining for rapid product customization without impacting lead times.