The IEEE Microwave Theory and Technology Society (MTT-S) is one of the largest and most prestigious technical societies within the IEEE, with over 18,000 (as of December, 2025) members across more than 160 chapters worldwide. Founded in 1952, MTT-S is the premier global community dedicated to advancing the theory, analysis, design, and applications of microwave, millimeter-wave, and terahertz technologies.
MTT-S organises flagship conferences including IMS (International Microwave Symposium), MAPCON, and IMWLC, publishes leading journals including the IEEE Transactions on Microwave Theory and Techniques, and runs an active network of regional chapters, technical committees, and MGA programmes that connect microwave professionals worldwide.