RF Flat Sheet Absorber-EPP

DMC premium quality high performance Expanded Polypropylene RF Flat Sheet Absorbers are made of High density carbon impregnated polypropylene material. DMC-PP-FLT series microwave flat absorbers are used on Doors, Anechoic chamber corners, RF shielded cabinets.

Frequency range 1GHz to 40GHz
Typical reflectivity as high as -39dB
Power handling capacity 4.8kW/m², 1353 V/m CW Radiated field strength
Fire Retardant per NRL-8093 1,2,3, UL 94:2013, HBF and DIN 4102 and Class B2
Continuous working temperature up-to 120°C
Clean Room suitable per ISO 14644 Class5
Water Resistant per GB/T 4208-2017
RoHS and REACH Compliant
Zero Carbon dust

Part number reference:

DMC-PP-FLT-40, DMC-PP-FLT-100

Datasheet

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TYPICAL REFLECTIVITY AT NORMAL INCIDENCE OVER FREQUENCY RANGE IN dB

Model Number	Thickness	1 GHz	3 GHz	6 GHz	10 GHz	18 GHz	40 GHz
DMC-PP-FLT-40	40 mm	15	24	26	29	33	34
DMC-PP-FLT-100	100 mm	21	27	28	33	37	39

Frequently Asked Questions

What is a Flat Sheet Absorber EPP?

It is an RF absorbing material made from expanded polypropylene (EPP) designed to reduce electromagnetic reflections in RF testing environments such as anechoic chambers.

What frequency range does this absorber support?

The absorber typically operates in the 1 GHz to 40 GHz frequency range, covering many RF and microwave testing applications.

What is the typical reflectivity of this absorber?

It can achieve reflectivity levels up to approximately −39 dB, depending on absorber thickness and frequency.

Where are flat sheet RF absorbers commonly used?

They are commonly installed on anechoic chamber doors, chamber corners, RF shielded cabinets, and antenna testing setups.

What material is used in this absorber?

The absorber is made from high-density carbon-impregnated expanded polypropylene (EPP) material.

What is the power handling capability?

The absorber supports power handling up to about 4.8 kW/m² with CW field strength around 1353 V/m.

Is the absorber fire-retardant?

Yes. It meets several fire safety standards such as NRL-8093, UL-94, and DIN 4102 Class B2.

What is the maximum operating temperature?

The absorber can operate continuously at temperatures up to 120 °C in RF testing environments.

Is the absorber suitable for cleanroom environments?

Yes. The absorber is ISO 14644 Class 5 cleanroom compatible and produces zero carbon dust.

What benefits does it provide in RF testing?

It helps reduce RF reflections, improve antenna measurement accuracy, minimize interference, and optimize electromagnetic testing environments.

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