ROHS Radar Absorber Material EMI Foam Absorber Radar Absorbent Material

ROHS Foam Absorbing Material For Radar System Clutter Suppression

Product description

Foam Absorbing Material for radar system clutter suppression is a high-performance microwave absorption solution engineered to minimize unwanted reflections and background interference in radar environments. Manufactured from lightweight, open-cell or closed-cell foam combined with advanced absorbing fillers, this material effectively converts incident radar energy into thermal energy, significantly reducing multipath reflections and electromagnetic clutter. Unlike conventional shielding materials, foam absorbers are designed to absorb rather than reflect RF signals, creating a cleaner electromagnetic environment for accurate radar detection and measurement.

In radar systems, internal reflections from enclosures, support structures, and surrounding surfaces can generate false targets and degrade signal-to-noise ratio. Foam absorbing material is strategically applied to antenna surroundings, radar housings, test fixtures, and chamber walls to suppress these unwanted echoes. Its flexible structure allows easy installation on flat or curved surfaces, while customizable thicknesses enable optimization across different frequency bands, including challenging low-frequency ranges.

This absorbing material offers excellent environmental stability, maintaining consistent performance under temperature variation and long-term operation. It can be supplied in sheets, blocks, or custom-cut shapes to match specific radar layouts. Widely used in aerospace, automotive radar testing, defense systems, and RF laboratories, foam absorbing material provides an effective and lightweight solution for clutter reduction, improved target resolution, and enhanced overall radar system reliability.

Main features 

(1) The product is light in weight, which can meet the lightweight requirements of testing equipment

(2) It can be designed in multiple layers and has good absorption effect

(3) Easy to cut, can be processed into various shapes

(4) High product reliability and stable performance

(5) It can be covered with film to meet the requirements of waterproof and moisture-proof, without powder falling, and has good anti-vibration

(6) Meet the requirements of RoHS environmental protection directive, and the flame retardant performance can reach HF-1 level

Size of product

The standard size is: 400mm x 400mm; the tolerance ±5mm can be machined according to demand

Product structure

Polyurethane waterproof membrane

Absorbed foam (multi-layer)

Polyurethane waterproof membrane

Some product models and parameters

Note: ① The parameters shown are for reference only, and the actual test and technical agreement shall prevail; ② The front and back are distinguished. For coated products, the blue surface is the absorption surface; optional non-coated products, the non-coated products, and the light-colored surface is the absorption surface; ③ The metal back is the best for wave absorption effect.

Application fields

Communication and radar system clutter suppression. Absorption components, test chamber, etc.