Reticulated foam absorbers solve a specific problem that lossy foam can’t: minimizing front-face reflection across very broad frequency ranges, particularly above 10 GHz. The mechanism is impedance matching. The front face of a reticulated absorber is loaded lightly enough to approximate the impedance of free space (377 ohms), so an incoming wave enters with minimal reflection. Inside the foam, the carbon loading increases progressively toward the back, scattering and absorbing the wave through the open-cell structure as it travels deeper. A conductive backing is mandatory. Without it, the wave passes through and reflects off whatever is behind the foam, defeating the design.

The AF Series Reticulated Foam is most commonly deployed in anechoic chamber linings, mmWave antenna pattern measurement environments, RCS (radar cross-section) measurement setups, automotive radar test fixtures (24 GHz K-band and 77/79 GHz W-band), and any high-frequency anechoic application requiring low reflection across the 4 to 100+ GHz range. Engineers selecting reticulated absorbers should verify mounting on a metal surface during evaluation. Testing on a non-conductive bench will produce misleading results.

The AF Series Reticulated Foam is available in five thicknesses: 0.375″, 0.500″, 0.750″, 1.000″, and 1.250″. Thicker foams extend low-frequency performance further down toward the 4 GHz design floor. Thinner variants suit higher-frequency applications above 18 GHz where shorter wavelengths require less material depth. Custom shapes and dimensions are available through in-house die-cutting and fabrication.

• Broadband performance: Effective attenuation from 4 GHz to 100+ GHz
• Lightweight open-cell polyurethane foam construction
• Reduced reflection: Ideal for chambers, housings, and test setups
• Excellent high-frequency stability: Supports mmWave and 5G applications
• Available in standard sheets or custom-cut assemblies
• RoHS and REACH compliant materials
• Optional ground plane and adhesive backing for easy installation

• Telecom & Wireless: 5G mmWave infrastructure, base stations, antenna housings
• Test & Measurement: Anechoic chambers, free-space measurements, optical benches
• Aerospace & Defense: High-frequency enclosures, payload modules, sensor housings
• Electronics: Broadband suppression in high-speed digital and optical devices
• Industrial: Control panels, RFI suppression in sensitive environments

• 4–18 GHz: Microwave links, radar altimeters, satellite ground stations
• 18–40 GHz: Automotive radar, Ka- and Ku-band telecom, defense systems
• 40–100+ GHz: 5G millimeter-wave, optical transceivers, advanced test environments