ORBIT FR AEC User Manual

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Convoluted Absorbers - AEC Series

AEC-3

> Applications:

• RCS & antenna measurement chambers

in the microwave & millimeter wave region

> Key features:

• Excellent attenuation properties

• Good absorption characteristics

> Shape:

• Convoluted

> Frequency band:

• From 3 GHz to 30 GHz and higher

> Standard base size:

• 2’ x 2’ (60.96 cm x 60.96 cm)

Standard Absorbers

> Height:

• 1.5’’ to 4’’ (3.8 cm to 10.2 cm)

> Operating conditions:

• Temperature: 70º F +/- 10º (21º C +/- 3º)

• Relative humidity: 55 % RH +/-15 %

> Indoor/outdoor:

• Indoor

> Related certifi cations:

• NRL 8093 – 1, 2, 3

> Ordering code:

• AEC-XX, where XX designates absorber height

in inches

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1/ Description

2/ Exceptional absorption characteristics

AEMI offers Broadband Convoluted absorbers that are
manufactured from lightweight urethane foam impregna­ted with a dielectric material.
The front surface is rippled, providing a good match to the
impinging wavefront.

The convoluted design, when properly loaded, exhibits
exceptional absorption characteristics in the millimeter
range, especially at wide angles of incidence. The convo­luted material has properties desirable for applications
requiring high refl ectivity performance in conjunction with
low forward scattering characteristics.

3/ Specifi cations

AEC-1.5 AEC-3 AEC-4

Height in 1.5 3.0 4.0

cm 3.8 7.6 10.2

@ 3.0 GHz dB 20 25

@ 6.0 GHz dB 20 20 30

@ 10.0 GHz dB 30 30 40

@ 15.0 GHz dB 35 35 45

Absorption @

Normal Incidence

@ 30.0 GHz dB 45 45 50

Weight lbs/pc. 1 2 2.75

kg/pc. 0.5 1 1.2

AEC-4 mechanical drawing

1.0’’

24.0’’

Increase durability
& lifespan by
adding our
rubberized coating!

For more information,
see page 32

4.0’’

24.0’’

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