These companies manufacture a variety of magnetics, absorbers, and shielding
for use in RF applications. Applications range from RFI/EMI enclosures to screen
rooms, custom shielding for PCBs, and machined chassis, noise filters, or ferrites
for keeping RF energy on the right side of a conductor can be found here.
Achieving a successful RF design is often dependent upon proper implementation
of shielding. The higher the frequency, the higher the power levels, or the more
crowded the frequency band, the more difficult it is to design shielding that will
provide the necessary level of isolation. Fortunately, there is a lot of design
information available in the form of white papers, datasheets, and online write-ups.
For most applications, it is possible to obtain success using off-the-shelf components
and well-tried methods. Sometimes, though, it is necessary to secure the assistance
of engineers whose experience lies in the realm of shielding.
| 905-738-7973 | Toronto, Ontario, Canada
RF/EMI shielding enclosures including true multi-cavity solutions.
Adams Magnetic Products | 800-747-7543 | Elmhurst,
Ferrite cores & accessories, flexible, ceramic, alnico, Samarium Cobalt
magnets, Neodymium products, magnetic assemblies, and more.
AFT Microwave | +49 7191 9659 0 | Germany
components including circulators, isolators, waveguide and coaxial components, phase
shifters, ferrites, thin film technology.
Amuneal Manufacturing Corp | 800-755-9843 | Philadelphia,
EMF & magnetic shielding, metal components & assemblies, sheet metal
and machined components and assemblies.
Arc Technologies | 978-388-2993 | Amesbury, MA
reticulated, & Lossy foams, EMI absorbers, EMI shielding gaskets, magnetic absorbers
(MAGRAM), radar absorbing structures (RAS), dielectric materials.
Atenlab | +886
2 2799 8715 | Taiwan City, Taiwan
Hundreds of chambers sold and installed
around the world. Over-the-Air (OTA) measurement systems perform comprehensive measurement
and test in a controlled environment. Compact Antenna Test Range (CATR) with one-touch
operation supports multiple standards and major instrument brands. Multi-probe OTA
measurement systems offer reduced time measurements over single-probe systems.
Braden Shielding Systems | 918-624-2888 | Tulsa, OK
Medical enclosures, pyramidal anechoic chambers, shielded doors, Solidcore Modular
Systems, welded enclosures.
Chomerics | 781-935-4850 | Woburn, MA
tape, EMI shielding, elastomer EMI gaskets, thermal management.
Coiltech | 714-708-8715 | Costa Mesa, CA
is a leading manufacturer of high quality surface-mount inductors, chokes, and coils.
Coiltronics (now Cooper Bussmann, now Eaton)
| Ellisville, MO
Transformers & inductors for DC-DC & switchmode applications
requiring high frequency magnetics.
Concentric Technology Solutions (CTS) | 1-817-503-8862
| Fort Worth, TX
Concentric Technology Solutions (CTS) is your one source for
off-the-shelf RF Shield Box and RF Enclosures when you need RF shielding with a
solid construction and repeatable results. Also customized integrated RF Shield
Box or RF Enclosure test solution for manual or automatic testing at an off-the-shelf
Credowan (now Cobham) | +44 (0) 1243 670711 | UK
Manufacturer and supplier of microwave equipment including waveguides, couplers,
diplexers, anechoic chambers, antenna rotary joints, antenna, radar & satellite
communications subsystems & components for commercial and military applications.
Cuming Lehman Chambers | 717-264-2265 | Chambersburg,
Design and construction of RF shielded anechoic chambers for the commercial
and defense markets.
Cuming Microwave Corporation | 800-432-6464 | Avon,
RF absorbers, dielectric materials, anechoic materials & chambers, syntactic
foam flotation equipment, syntactic foam insulation.
Cybershield | 888-725-5361 | Dallas/ TX
shielding solutions using plating, vacuum metallization and conductive paint. Dispensed
conductive gaskets. 3D metal patterns on plastic including printed antennas.
Delta Electronics | 510-668-5100 | Fremont, CA
power supplies, chip inductors, DC/DC converters, voltage regulator modules, EMI
filters, voltage controlled oscillators (VCO), temperature controllers, thermal
management products, video displays.
EAC Shielding | 562-926-7742 | Santa Fe Springs, CA
EMI/RFI Shielding products, EMI/RFI honeycomb panels, EMI shielding air vents, wire
mesh, gaskets, connector gaskets, die cutting, bonding.
Eagle Group Northeast Corp | 508-384-9700 | Woonsocket,
EMI | RFI & microwave foil shielding, RF absorbers, injection molding.
Eastern Components | 800-862-1640 | W. Conshohocken,
Cores and shielding for electronic applications.
Elna Magnetics | 800-553-2870 | Woodstock, NY
components, in standard and non-standard core shapes, soft ferrites, amorphous alloy,
powdered iron, MPP and Sendust cores & accessories, core gapping, CNC machining,
conventional grinding, and assembly of ferrite & other magnetic products.
Emicon Corporation | 915-590-0795 | El Paso, TX
Custom manufacturer of coils, powerline filters, signal line filters, EMI filters,
low pass filters and inductors.
Emerson & Cuming Microwave Products (now Laird)
| 781-961-9600 | Randolph, MA
Eccosorb microwave & RF absorbers, anechoic
chambers. They have a really nice chart available for determining the dielectric
constant and loss tangent.
Espey Mfg & Electronics Corp | 518-245-4400 | Saratoga
Custom magnetic design, mW to MegaW, all forms including pulse, impedance
matching, SMPS, power, rectifier, inductor, reactor, mag-amp, CT, PT, high voltage
ETS-Lindgren | 512-531-6400 | Cedar Park, TX
chambers, absorbers, antennas, filters, Helmholtz coils, probes, meters, TEM cells,
shielded enclosures, screen rooms, positioners.
Fair-Rite Products | 800-836-0426 | Wallkill, NY
Large toroids, chip beads, chip inductors.
FDK | 858-558-8368
| San Diego, CA | Japan
Piezoelectric buzzers, capacitors, inductors, resistors,
transformers, anechoic chambers, ferrites, VCO's, power supplies, circulators, combiners/dividers,
motors, optics, synthesizers, batteries, RF absorbers, switches.
Ferrishield | 212-268-4020 | New York, NY
RFI cable chokes.
Ferronics | 716-388-1020 | Fairport, NY
beads, baluns, multi-hole cores.
Ferroxcube | 915-599-2616 | El Paso, TX
products & accessories, integrated inductive components, multilayer suppressors &
Fischer Custom Communications | 310-891-0635 | Torrance,
TEM cells, EMI filters, Helmholtz coils.
Holland Shielding Systems BV | +31 78 613 13 66 | The
RF shielding, Faraday cages, EMI shielding gaskets, conductive foil
tape, conductive glue, conductive paint.
| 214-956-0055 | Dallas, TX
Custom fabrication of EMI/RFI shielding and gasketing,
dielectric insulation, laminates, foils, tapes, adhesives.
| +44 (0)1376 348115 | Braintree, Essex, UK
EMI shielding conductive fabric for
cable shielding, stainless wire mesh, conductive tube, conductive | EMI shielding
fabric adhesive tape and all kinds of gasket, etc.
KOA Speer Electronics | 814-362-5536 | Bradford, PA
Resistors, capacitors, 3-terminal EMI/RFI filters, circuit protection, inductors,
Laird Technologies | 800-843-4556 | Delaware Water
EMI shielding, BeCu, fabric over foam, knitted mesh wire, surface mount
shields, conductive elastomers.
LBA Group | 252-757-0279 | Greenville, NC
wireless telecommunications industry products & services including antennas,
capacitors, inductors, shielding systems, test equipment, testing and technical
services. RF Awareness & Antenna Co-Location Training.
Leader Tech | 813-855-6921 | Tampa, FL
electronic shielding products including gasketing that help prevent electromagnetic
or radio frequency interference (EMI/RFI) on circuit board applications.
Lindgren RF (now ETS-Lindgren) | 512-531-6400 | Cedar
Absorbers, antennas, shielded fiber optic camera systems, RF Microwave
test chambers, EMF instruments, power and signal line filters, positioners, probes,
Magnetic Component Engineering | 800-989-5656 | Torrance,
Blocks, discs, rings, and round bars in various materials, services including
magnetizing, testing, stabilization, calibration of magnets, advanced coatings &
platings, assembly of PM systems & structures, design, engineering, plate magnets,
tube magnet assembly, pulleys, Hopper Grates, magnetic sweepers, stationary overhead
Magnetics | 800-245-3984 | Pittsburgh, PA
cores for high frequency power transformers and inductors, EMC filters, and other
applications, powder cores for switched-mode power supplies, switching regulators,
and noise filters, strip wound cores come as tape cores, cut cores, miniature bobbin
cores, or ring cores and are used in safety critical applications, aerospace, and
MAJR Products | 888-763-2952 | Saegertown, PA
Interference | Radio Frequency Interference (EMI/RFI) Shielding - gaskets, elastomers,
fingerstock and air ventilation, filtration panels, grounding washers, ferrites,
Masach Technologies Ltd | 972-2-5356607 | Israel
Customized RF shielding, RF shields, RMI solutions, RFI solutions. Fast, high quality,
cost effective RF shields, standard and custom designed.
MAST Technologies | 858-452-1700 | San Diego
manufactures innovative RF absorbers, microwave absorbers, and EMI shielding materials
for integration into military and electronics solutions.
Metglas | 800-581-7654 | Conway, SC
ribbon and components used in the production of electrical distribution transformers,
high frequency magnetic components for power electronics, material for anti-theft
tags, brazing alloys, solder, and toroid cores.
Micrometals | 800-356-5977 | Anaheim, CA
iron powder cores for power conversion & line filter applications & radio
frequency applications, magnetic alloy core materials for high temperature applications,
inductor design software (free).
MuShield | 888-669-3539 | Goffstown, NH
monitor enclosures, raw materials for low frequency RF shielding up to 50 kHz.
MWT Materials | 973-472-5161 | Passaic, NJ
Microwave absorbers for the DOD and commercial markets.
Orbel | 610-829-5000 | Easton, PA
board level RF shielding, multi-cavity shields, finger stock, chemical etched metal
parts, metal stamping and electroplating services.
Panashield | 203-866-5888 | Norwalk, CT
chambers, shielded enclosures, reverberation chambers.
P & P Technology
Ltd | +44 (0) 1376 550525 | UK
Manufacturer of EMI | RFI shielding
gaskets, meshes and vents.
Precision Incorporated | 800-749-3677 | Minneapolis,
Switchmode, power pulse, linear single phase, linear three phase transformers,
common mode chokes, CRT magnetics, antenna, solenoid, armature coils.
Precision Micro Ltd | +44 121 380 0100 | UK
shielding solutions, from design to compliance. Precision manufacturing technologies
from Ion beam and electroforming to photo etch and laser cutting.
Precision Photofab | 800-875-1093 | Buffalo, NY
Heating elements, filters & screens, encoder discs, RF shields, recharge grids,
stamping, forming, plating, sub assembly, painting, heat treating, laser services.
Premier Magnetics | 949-452-0511 | Lake Forest, CA
Gaskets, shielding, line filters.
RFI Corporation | 631-231-6400 | Bay Shore, NY
chassis feedthrough filters.
| +61 3 8739 6700 | Victoria, Australia
Design, fabricate, install and test all
types of R shielded enclosures, from a small bench top model for laboratory use
to a large complex for military vehicle testing. Testing services.
SAS Industries | 631-727-1441 | Manorville, NY
in the manufacture of EMI shielding, waveguide, connector, conductive, non-conductive,
washer style, co-elastomer gaskets, fluid sealing products, static and reciprocating
seals, and O-rings. Capabilities include die cutting, molding, laser cutting, extruding,
and water jet cut gaskets, along with a wide variety of stocked sheet and roll goods.
Schlegel Systems | 800-204-0863 | Rochester, NY
Gaskets, I/O backplane shielding gaskets, BeCu Fingerstock, conductive envelopes,
Shielding Solutions Limited | 01376 330033 | Braintree
Design, manufacture and application of components and materials for
the control of electromagnetic interference EMI and environmental sealing.
Silver Cloud Manufacturing | 856-825-8900 | Millville,
EMI/RFI shielding, ESD protection, custom filters & lenses, anti reflective
surfaces, display protectors, heat shields, membrane switches.
Spira Manufacturing Corporation | 818-764-8222 | North
EMI shielding, gaskets, spiral wrap, honeycomb filters.
TDK | 516-535-2600 | Garden City, NY
Filters, multi-layer ceramic
capacitors, inductors, EMC components, LAN components, ferrite cores, amorphous
cores, transformers, magnets, magnet applied products, piezoeletronic products,
delay lines, sensors, power supply, RF components, RF modules, and more.
Tech-Etch | 508-747-0300 | Plymouth, MA
shielding, precision parts, flexible circuits.
Tusonix | 520-744-0400 | Tucson, AZ
surface mount EMI filters, variable trimmer capacitors, filtered terminal blocks,
custom EMI filter plate assemblies, ceramic disc capacitors.
West Coast Magnetics | 800-628-1123 | Stockton, CA
Switch mode, 60 Hz, isolation, base drive, current sense transformers, RF, power
inductors, common mode chokes.
W.L. Gore & Assoc | 800-311-3060 | Elkton, MD
Coax cables and harnesses, SMT RF grounding pads, EMI gaskets, thermal interface
materials, dielectric materials.