ORBIT FR Ventilated Absorbers - AEPV User Manual

>

Ventilated Absorbers - AEPV Series

Ventilated absorber

> Applications:

• Chamber HVAC systems where air passage is critical

• Medium power applications

> Key features:

• Allows air to move freely through absorber

> Shape:

• Pyramidal

• Wedge

• Flat

> Frequency band:

• From 125 MHz to 18 GHz

> Standard base size:

• 2’ x 2’ (60.96 cm x 60.96 cm)

Adapted Absorbers

> Height:

• 4’’ to 72’’ (10.2 cm to 121.9 cm)

> Operating conditions:

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

• Relative humidity: 55 % RH +/-15 %

> Indoor/outdoor:

• Indoor

> Related certifications:

• NRL 8093 – 1, 2, 3

> Ordering code:

• AEPV-XX, where XX designates absorber

height in inches

27

1/ Description

Ventilated absorbers are manufactured from special reticulated (open cell) foam. When used as a vent material, this
product allows air to move freely.

2/ Specifications

AEPV-4 AEPV-6 AEPV-8 AEPV-12 AEPV-18 AEPV-24 AEPV-36 AEPV-48

Height in 4 6 8 12 18 24 36 48

cm 10.2 15.2 20.3 30.5 45.7 61 91.4 121.9

Pyramids per block 144 64 64 36 16 9 4 4

@ 125 MHz dB 28

@ 250 MHz dB 30 32 35

@ 500 MHz dB 30 35 37 40

@ 1.0 GHz dB 30 35 37 40 45 45

@ 3.0 GHz dB 30 33 37 40 45 45 50 50

@ 6.0 GHz dB 35 37 45 45 50 50 50 50

@ 10.0 GHz dB 40 40 50 50 50 50 50 50

@ 15.0 GHz dB 45 50 50 50 50 50 50 50

Absorption @ Normal Incidence

@ 18.0 GHz dB 50 50 50 50 50 50 50 50

Power Watt/in2 1 1 1 1 1 1 1 1

Watt/m2 1550 1550 1550 1550 1550 1550 1550 1550

Weight lbs/pc. 2.5 3.5 4.5 6.5 8 11.5 16 22
kg/pc. 1.1 1.6 2 2.9 3.6 5.2 7.3 10

3/ Medium Power Absorber Specifications

When the material is used as a medium power absorber,
it can safely dissipate 1 W/in2 CW with standard convec­tion cooling. This is accomplished by the open cell cha­racteristics of the reticulated foam, which increases the
ability of the absorber to dissipate the heat generated
by the absorption of the microwave energy. For higher
power applications of 2 - 3 W/in2 CW, material must be
force-cooled.

4/ Pressure Drop Specifications

HVAC professionals use pressure drop calculations to
ensure adequate air flow for proper air turn-over within
a chamber.

AEPV-18 mechanical drawing

18’’

6’’

24”

24”

3’’

28