Radio Frequency Interference

RF cosite interference poses serious problems in situations where multiple RF systems are located in a common environment. Modern RF systems operate over much of the RF spectrum (10 KHz through 100+ GHz), using vastly different power levels and modulation schemes. Commercial and military RF systems are designed to performance specifications that dictate both in-band and out-of-band performance. Nonetheless, cosite interference can occur between RF systems that meet their specifications. When antennas are closely located, seemingly insignificant emissions or susceptibilities of transmitters and receivers can result in interference due to high coupling levels. Further, RF transmitter power levels, modulation schemes, harmonics and nonlinear behavior lead to spectral growth both in-band and out-of-band that can overload receivers. In general, receivers have both in-band and out-of-band susceptibilities; mixer products, phase noise and dynamic range issues that make it necessary to consider their wideband performance to determine if they will function properly in a complex RF environment.

ANSYS EMIT takes away the black magic of solving complex cosite interference problems through an intuitive workflow that identifies the root cause of problems. Whether you are considering a handheld device or a large military system, EMIT can help mitigate your most challenging cosite interference problems.