Broadband High Performance RF and Microwave Wedge Absorber

DMC Polyurethane RF and Microwave Wedge Absorbers are mainly used in Antenna test chambers, Compact range and GTEM cells. DMC-PU-WG-MI series microwave wedge absorbers provide excellent performance in normal incidence and off angle incidence in test chamber.

RF and Microwave Wedge Absorber features

Frequency range 500MHz to 110GHz
Typical reflectivity as high as -50dB
Power handling capacity 1.5kW/m²,540 V/m CW Radiated field strength
Fire Retardant per NRL-8093 1,2,3, UL 94 and DIN 4102-B2
Continuous working temperature up-to 90°C
RoHS Compliant
Zero Carbon dust

Part number reference:
DMC-PU-WG-MI-200, DMC-PU-WG-MI-300, DMC-PU-WG-MI-500, DMC-PU-WG-MI-700

Datasheet

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TYPICAL REFLECTIVITY AT NORMAL INCIDENCE OVER FREQUENCY RANGE IN dB

Model Number	500 MHz	1 GHz	3 GHz	6 GHz	10 GHz	18 GHz	40 GHz	110 GHz
DMC-PU-WG-MI-200		25	32	35	42	48	50	45
DMC-PU-WG-MI-300		30	38	45	48	50	50	45
DMC-PU-WG-MI-500	20	35	43	50	50	50	50	45
DMC-PU-WG-MI-700	25	40	50	50	50	50	50	45

DMC-PU-WG-MI-300

DMC-PU-WG-MI-500

DMC-PU-WG-MI-700

Frequently Asked Questions

What is an RF and Microwave Wedge Absorber?

It is a wedge-shaped RF absorbing foam material designed to reduce electromagnetic reflections in RF testing environments such as antenna chambers and GTEM cells.

What frequency range does the wedge absorber support?

The absorber typically operates from 500 MHz up to around 110 GHz, making it suitable for microwave and millimeter-wave applications.

What is the typical reflectivity of this absorber?

The absorber can achieve reflectivity levels up to approximately −50 dB, depending on size and frequency.

Where are RF wedge absorbers commonly used?

They are mainly used in antenna test chambers, compact antenna ranges, GTEM cells, and RF measurement laboratories.

What material is used to manufacture the absorber?

The absorber is typically made from carbon-impregnated polyurethane foam, which efficiently absorbs RF energy.

What is the power handling capability?

It can handle approximately 1.5 kW/m² RF power with continuous wave field strength around 540 V/m.

Is the absorber fire-retardant?

Yes. It complies with NRL-8093, UL-94, and DIN 4102-B2 fire safety standards.

What is the maximum operating temperature?

The absorber can operate continuously at temperatures up to about 90 °C.

What advantages does it provide in RF testing?

It reduces RF reflections, improves antenna measurement accuracy, minimizes signal scattering, and creates a controlled electromagnetic environment for reliable testing.

Is the absorber environmentally compliant?

Yes. The product is RoHS compliant and produces zero carbon dust, making it safe for laboratory environments.

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