MR2: Cavity Resonance Absorbers

MAST Technologies’ Cavity Resonance Absorber product series is a thin magnetically loaded sheet stock having loss at microwave frequencies, while maintaining the desirable characteristics of elastomeric binders. Cavity Resonance Absorbers are designed to exhibit high loss and are intended to be applied to metal surfaces inside microwave cavities to reduce the Q of the cavity. Cavity Resonance Absorbers attenuate energy at normal and high angles of incidence at frequencies from 1 GHz to 20 GHz. The standard elastomer is silicone, but other elastomer formulations are available.

Typical Applications

  • Specular Return (RCS)
  • Side/Back Lobe Reduction
  • Aircraft Seals
  • Instrument Housings
  • Discrete Frequency
  • Cavity backed antennas

High Loss Products

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Thickness (in/mm) Part Number Elastomer Frequency
0.040/1.0 MR42-0007-20 Silicone 0.8-18 GHz
0.080/2.0 MR42-0008-20 Silicone 0.5-18 GHz

Standard Products

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Thickness (in/mm) Part Number Elastomer Frequency Part Number Elastomer
0.010/0.25 MR21-0012-20 Silicone 16 – 26 GHz
0.020/0.5 MR21-0001-20 Silicone 14 – 18 GHz MR22-0001-00 Nitrile
0.030/0.7 MR21-0002-20 Silicone 13 – 17 GHz MR22-0002-00 Nitrile
0.040/1.0 MR21-0003-20 Silicone 9 – 12 GHz MR22-0003-00 Nitrile
0.050/1.2 MR21-0004-20 Silicone 6 – 11 GHz MR22-0004-00 Nitrile
0.060/1.5 MR21-0005-20 Silicone 5 – 9 GHz MR22-0005-00 Nitrile
0.070/1.8 MR21-0006-20 Silicone 4 – 7 GHz MR22-0006-00 Nitrile
0.080/2.0 MR21-0007-20 Silicone 3 – 7 GHz MR22-0007-00 Nitrile
0.090/2.3 MR21-0008-20 Silicone 2 – 5 GHz MR22-0008-00 Nitrile
0.100/2.5 MR21-0009-20 Silicone 2 – 5 GHz MR22-0009-00 Nitrile
0.125/3.2 MR21-0010-20 Silicone 1 – 3 GHz MR22-0010-00 Nitrile

All MR2 Adhesives

Electrical Performance

The performance plot below shows the performance of several of our tuned frequency materials.