RFMW (San Jose, CA) has announced the availability of a white paper discussing the proper selection of microwave absorbing and EMI shielding products. This Technical Bulletin from MAST Technologies defines the characteristic properties of various elastomers used in the manufacture of microwave absorbing products. For example, Nitriles show excellent resistance to petroleum based fuel and oil products so are superior to Silicone in aerospace and flight line environments. Features include:

• Viton based absorber for high temperature applications or where dilute acids may be encountered.
• Elastomer based absorbers for a variety of commercial and military applications where unwanted RF emissions cause system degradation.
• MAST elastomers can be custom tuned for frequencies ranging from 1MHz to greater than 40GHz. 

For more information, visit www.rfmw.com