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EMF Shielding Services

In many instances, shielding is the option of preference to reduce elevated EMF levels to mitigate equipment interference (EMI) or possible health concerns. Shielding choices can include shielding of either the source or the affected area or device. FMS provides shielding design and implementation services for DC & AC magnetic fields as well as radio frequency (RF) fields.

The shielding of AC magnetic fields is particularly challenging as they pass undiminished through earth, concrete, most conventional building materials including wood, drywall and even a thick layer of lead! Through extensive research, FMS has acquired the unique capability to engineer and execute very high performance AC magnetic field shielding schemes utilizing a superior “eddy current cancellation” shielding technology. To achieve optimum results, this shielding technology requires equally weighted attention be given to:

100% Shielded TEM Microscope Room

Final Testing of Shielded TEM Room

  • The design and engineering of the shield geometry and coverage
  • Specification of conducting shielding material characteristics
  • Critical site installation techniques to insure optimum shield performance

By managing these three key components, FMS has successfully implemented hundreds of successful AC magnetic field schemes throughout the US and with technology partnerships, at numerous sites throughout the world. Through innovative engineering and installation techniques, FMS in some critical use projects, has reduced elevated AC magnetic fields nearly 99.9%. Most notable were requirements in several “Nanotechnology” research laboratory projects for FMS to provide multiple rooms containing TEM microscopes, with ambient EMF environments less than 0.1mG by installation of robust shielding schemes.

To insure that shielding objectives are met, FMS provides a complete AC magnetic field implementation service which includes all design, engineering, shielding material supply and site installation. FMS maintains a team of technicians with the requisite skill sets and experience to successfully accomplish installation of shielding schemes at client locations throughout the world. By controlling all critical aspects, FMS offers a guarantee of performance for the design and installation of its shielding installations.

Recent Projects


FMS as the EMF/EMI Consultant designed and installed the passive and active mitigation systems for this newly established interdisciplinary organization under the Office of Research of the University of California Irvine (UCI) to house state of the art electron-microscope labs (4 imaging cells). The project required analysis of interference potential of all internal and external emission sources, which included vehicle and facility elevators (DC), broadband electrical system (AC) sources, etc.

Harvard LISE

FMS was engaged as the project’s EMI Consultant by the project architect (Wilson Architects) to conduct an electromagnetic field (EMF) analysis in an existing laboratory (shell space) located in the basement level of the Harvard CNS facility.


Seattle Children’s Research Institute is currently in the construction phase of ”Building Cure”, a 540,000 square foot research building, which will be dedicated to developing therapies for children with diseases such as Cancer, Type 1 Diabetes and Sickle Cell Anemia.

Un. of Illinois Urbana-Champaign Electrical and Computer Engineering Bldg.

FMS was engaged to conduct a thorough assessment of the building’s design for EMI interference threat concerns to sensitive research equipment. A document review and extensive 3-Dimension computer simulation studies were conducted to evaluate EMF emissions from the building’s electrical distribution, mechanical and other systems.


Over its 20 years, FMS has successfully completed hundreds of EMI projects which included a diverse range of consulting and mitigation services.

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