At Sonnet, we've been developing 3D planar EM software since 1983, and our software has earned a solid reputation as the world's most accurate commercial planar EM analysis package for single and multi-layer planar circuits and antennas. Sonnet Software Inc., founded by Dr. Rautio, is a private company, dedicated completely to the development of commercial EM software. We take great pride in providing quality technical support for our products--which we believe to be very important for high-end technical software products. Sonnet is based in Syracuse, NY, USA with representatives across the globe.