ORBIT FR Walkway Absorbers - AEWW User Manual

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Walkway Absorbers - AEWW Series

Walkway Steps

AEWW-18

> Applications:

• In-chamber access to devices, antennas under

test and support equipment

> Key features:

• Excellent load bearing and wear characteristics

> Shape:

• Flat

• Step

> Frequency band:

• From 250 MHz to 30 GHz

> Standard base size:

• 2’ x 2’ (60.96 cm x 60.96 cm)

> Height:

• Standard: 4’’ to 24’’ (10.2 cm to 61 cm)

Custom sizes available up to 72’’

•

> 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:

• AEWW-XX, where XX designates internal absorber

height in inches

Adapted Absorbers

19

1/ Description

AEMI’s broadband walkway RF absorber is composed of a self-extinguishing polystyrene core placed in an interloc­king pattern over a standard AEP type material. This structure is topped with a higher density polystyrene laminate.
The AEWW materials offer excellent load bearing and wear characteristics. The material’s ability to withstand higher
loads than most walkway materials is due to the construction technique.
At microwave frequencies, walkway performance is 10 to 15 dB less than standard absorbers of similar size.
Custom sizes and shapes can be provided. The walkway absorber is taller than standard absorber. We generally
recommend using walkways one size smaller than surrounding absorbers.

2/ Specifi cations

AEWW-4 AEWW-8 AEWW-12 AEWW-18 AEWW-24

Internal Height in 4 8 12 18 24
cm 10.2 20.3 30.5 45.7 61

Size in 24 x 24 x 5.5 24 x 24 x 9.5 24 x 24 x 14.5 24 x 24 x 21.5 24 x 24 x 29.5
cm 61 x 61 x 14 61 x 61 x 24.1 61 x 61 x 36.8 61 x 61 x 54.6 61 x 61 x 74.9

@ 250 MHz dB 20

@ 500 MHz dB 20 25

@ 1.0 GHz dB 20 20 25 30

@ 3.0 GHz dB 20 27 30 30 35

@ 6.0 GHz dB 25 35 35 35 40

@ 10.0 GHz dB 30 40 40 40 40

@ 15.0 GHz dB 35 40 40 40 40

@ 30.0 GHz dB 40 40 40 40 40

Absorption @ Normal Incidence
Power Watt/in
Watt/m2 775 775 775 775 775

Weight lbs/pc. 5.5 7 9 17.5 21.5
kg/pc. 2.5 3.2 4.1 7.9 9.8

Load capacity lbs 300 300 300 400 400

kg 136 136 136 181 181

2

0.5 0.5 0.5 0.5 0.5

20

AEWW-18 24” x 48” mechanical drawing AEWW-12 mechanical drawing

21 1/2’’

24”

48”

14 1/2’’

24”

Custom walkway step

10 3/4’’

21 1/2’’

24”

24”

24”