Low-Profile Magnetic Shielding for Circuit Board Electronics Navy SBIR FY2008.1 Sol No.: Navy SBIR FY2008.1 Topic No.: N08-060 Topic Title: Low-Profile Magnetic Shielding for Circuit Board Electronics Proposal No.: N081-060-1057 Firm: NVE Corp. (formerly Nonvolatile Electronics, Inc.) 11409 Valley View Road Eden Prairie, Minnesota 55344-3617 Contact: Catherine Nordman Phone: (952) 996-1629 Web Site: www.nve.com Abstract: Electronic components sensitive to magnetic fields, such as superconducting digital electonics, require magnetic shielding from ambient fields and magnetic pulses. While enclosures of high permeability magnetic materials are commonly used to achieve passive flux shunting, the structures are substantially larger than the circuitry being protected. For military and commercial satellites, this adds undesired volume and weight. A substantially lower-profile solution is proposed here in which stray magnetic fields are both passively shunted and actively nulled. The shielding assemblies are small and can be used alone or in arrays to cover desired areas of electronic components on printed circuit boards. The assemblies are expected to produce substantial magnetic-field reductions and yet have at least three times less the volume and weight of a purely passive shield. Benefits: Potential applications include shielding sensitive electronics in military and commercial satellites, anti-tamper technology, computers, medical electronics, cell phones, personal audio equipment, gaming electronics, and miniature audio-visual electronics. Return