Aerospace and defense engineers opt for innovative EMI and RFI shielding solutions and materials to protect safety- and mission-critical systems from intentional and unintended electronics emissions.
Aerospace and defense applications, platforms, and environments are undergoing a digital transformation, and the proliferation of portable electronics devices and embedded electronics systems is contributing to a significant increase in RF emissions that could cause interference, data corruption, or worse.
The number and complexity of electronics equipment and the threat of electronic countermeasures (ECM), ranging from radar jamming and deception to a devastating electromagnetic pulse (EMP) attack, are on the rise. All these factors are driving the need for greater protection from electromagnetic interference (EMI) and radio-frequency interference (RFI), both of which challenge aerospace and defense engineers today and could have disastrous effects on safety- and mission-critical systems.
Fiber-optic interconnect solutions are ideally suited for high-speed, high-reliability, EMI/RFI-immune, digital data transmission in harsh environment applications, such as airborne avionics and computers, battlefield communications, and weapon systems,” officials at Amphenol in Wallingford, Conn., say. “A large amount of data, voice, and video has to be securely transmitted in these applications, sometimes over long distances. Fiber-optic links, with large bandwidth and a small diameter, provide a fast, reliable, lightweight, and simple method to transmit a huge amount of information between various systems.
“As electronics become more complex, they require more radio-frequency (RF) shielding. Fly-by-wire systems in aircraft, safety systems, and even passengers carrying tablets or phones, and there’s more electronic interference around than there was just a few years ago,” says Scott Gunderson, global aerospace and defense market manager at Parker Chomerics in Woburn, Mass. EMI/RFI shielding is important to be able to ground those emissions – provide essentially a ground plane around the equipment where the equipment inside is protected from those harmful emissions,” Hutchinson says. “Almost all military applications require some form of EMI emissions control; that’s why we have a military specification called MIL-STD-461,” Hutchinson explains