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Lossy Foam Absorbers (MF22 Series)
Broadband Insertion Loss.
Inside the Cavity.
Inside the Enclosure.
LOSSY FOAM ABSORBERS
MAST Technologies’ MF22 Series Lossy Foam Absorbers are lightweight, conductive carbon-loaded foam materials engineered to deliver broadband insertion loss at microwave frequencies — for application on metal surfaces inside enclosures, housings, radomes, and antenna systems where geometry allows for foam placement.
MF22
Series Family
500 MHz – 40+ GHz
Broadband Coverage
Indoor + Outdoor
Configurations
AS9100D
Quality Certified
Broadband RF Absorbers for Cavity & Enclosure Applications
Cost-Effective Broadband Attenuation — 500 MHz – 40+ GHz.
MF22 absorbers combine carbon-loaded foam construction with a constant coating to deliver consistent insertion loss across the 500 MHz – 40+ GHz band — the cost-effective workhorse for enclosure-scale RF attenuation across commercial and defense applications.
Performance characteristics vary by thickness, with both standard indoor (MF22) and ruggedized outdoor (MF23) configurations available for the operating environment your installation will see.
KEY CAPABILITIES— MF22 Series
MF22 Series
Frequency Performance
500 MHz – 40+ GHz
Standard products operate from 500 MHz – 40+ GHz depending on thickness
Standard MF22 Series Product Characteristics
Standard Specifications Across the MF22 Series.
Standard Sheet Size
24″ × 24″ (610 × 610 mm)
Thickness Range
0.125″ – 1.000″
(product dependent)
Frequency Range
500 MHz – 40+ GHz
Operating Temperature
−60°F to 250°F
Color
Black
Adhesive Option
PSA Available
on Select Products
Flammability Rating
UL94-HF1 Available
INSERTION LOSS CURVE
Performance Graph
MF22 Series Configurations
Two Sub-Series. Indoor or Ruggedized.
The MF22 Series includes both indoor and ruggedized outdoor configurations to support a wide range of operating environments. Pick the sub-series that matches your installation’s environmental exposure.
MF22 — Indoor Lossy Foam Absorbers
Designed for use in controlled environments where environmental exposure is minimal — the cost-effective default for sheltered installations.
TYPICAL USE CASES
MF23 — Outdoor & Ruggedized Lossy Foam Absorbers
Designed for use in controlled environments where environmental exposure is minimal — the cost-effective default for sheltered installations.
TYPICAL USE CASES
Available Products
Twelve MF22 Configurations.
Match Thickness, Backing & Environment.
PART NUMBER
THICKNESS
FREQUENCY RANGE
PRODUCT SIZE
ADHESIVE
MF22
INDOOR LOSSY FOAM ABSORBERS
MF22-0001-00
0.125″ (3.18 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF22-0001-01
0.125″ (3.18 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
MF22-0002-00
0.250″ (6.35 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF22-0002-01
0.250″ (6.35 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
MF22-0003-00
0.500″ (12.7 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF22-0003-01
0.500″ (12.7 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
MF22-0009-00
1.000″ (25.4 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF22-0009-01
1.000″ (25.4 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
MF23
OUTDOOR & RUGGEDIZED LOSSY FOAM ABSORBERS
MF23-0003-00
0.500″ (12.7 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF23-0003-01
0.500″ (12.7 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
MF23-0009-00
1.000″ (25.4 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
—
MF23-0009-01
1.000″ (25.4 mm)
500 MHz – 40+GHz
24″ × 24″ (610 × 610 mm)
PSA
Greater thickness improves insertion loss performance at lower frequencies. Custom thicknesses and sizes available on request. UL94-HF1 flammability rating available — contact the engineering team for qualification details.
Performance & Test Methods
Characterized Performance — NRL Arch & Transmission Tunnel.
MF22 Series performance is characterized using both free-space reflectivity and transmission tunnel testing — the dual-method qualification engineers expect from absorbers specified into program-level builds.
MF22 Lossy Foam Absorber Applications
Where MF22 Foam Solves the Enclosure Problem.
01
Electronic Enclosures & Housings
02
RF Equipment Cabinets
03
Laboratory & Rack-Mounted Equipment
04
Shielded Cabinets
05
Indoor & Outdoor RF Enclosures
06
Microwave Cavity Damping
Work With Our Engineers
Match the MF22 Configuration to Your Environment & Geometry.
Selecting between MF22 (indoor) and MF23 (ruggedized) starts with the installation environment, then maps to thickness for the frequency response you need. Our engineering team helps you align the sub-series, thickness, and PSA backing to your application — and can qualify UL94-HF1 flammability ratings for programs that require it.
Engineering Question
Indoor or ruggedized — which MF22 fits your installation?
Share the operating environment, the frequency range you need attenuated, and the installation envelope — our engineering team will identify the right MF22 sub-series, thickness, and backing format for your application.
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