ORBIT FR Pyramidal Absorbers User Manual

>

Pyramidal Absorbers - AEP Series

AEP-96-TW

AEP-18

> Applications:

• All chamber types: aerospace & defense, telecom,

automotive, academic & research institutes

> Key features:

• Excellent absorption over a broad frequency

range

> Shape:

• Conventional pyramid: AEP-4 to AEP-60

•

Twisted pyramid: AEP-36 to AEP-96, except AEP-60

> Frequency band:

• From 30 MHz to 18 GHz

> Standard base size:

• 2’ x 2’ (60.96 cm x 60.96 cm)

Standard Absorbers

> Height:

• 4’’ to 96’’ (10.2 cm to 243.8 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:

• AEP-XX, where XX designates absorber height

in inches

11

1/ Description

Broadband pyramidal absorber is manufactured
in two basic geometries, depending on size and
performance requirements:

• Conventional right pyramid

• Twisted pyramid

The AEP-4 to AEP-60 absorbers are a conventional
pyramid with a square base of uniform thickness, tapered
to a point.

2/ Increase wide angle performances with Twisted

Pyramid

The Twisted Pyramid shape increases wide angle perfor­mance and the peak’s mechanical support.
The AEP-72 to AEP-96 absorbers are based on a
unique geometry that has the peak twisted at 45 degrees,
creating alternate peaks and valleys, which increases
performance and reduces mismatch at the base tran­sition. This twisted confi guration is also available in
AEP-36, AEP-48 and AEP-60 upon request.

Increase durability & lifespan by
adding our rubberized coating!

For more information, see page 32

3/ Specifi cations

AEP-4 AEP-6 AEP-8 AEP-12 AEP-18 AEP-24 AEP-36 AEP-48 AEP-60 AEP-72 AEP-96

Geometry Right/Twisted R R R R R R R/T R/T R T T

Height in 4 6 8 12 18 24 36 48 60 72 96

cm 10.2 15.2 20.3 30.5 45.7 61 91.4 122 152.4 182.9 243.8

Pyramids/Blocks per block 144 64 64 36 16 9 4 4 1 1 1

@ 30 MHz dB 5 7 8 9 15

@ 80 MHz dB 12 15 18 20 25

@ 125 MHz dB 15 28 30 33 35

@ 250 MHz dB 30 32 35 37 37 40

@ 500 MHz dB 30 35 37 40 40 43 45

@ 1.0 GHz dB 30 35 40 40 42 45 47 48 50

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

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

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

Absorption @ Normal Incidence

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

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

2

Power Watt/in
Watt/m

Weight lbs/pc. 2.5 3 4.5 6 9 13.5 18.5 25 30 42 60

kg/pc. 1.1 1.4 2 2.7 4.1 6.1 8.4 11.3 13.6 19 27.2

0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

2

775 775 775 775 775 775 775 775 775 775 775

12

AEP-4 mechanical drawing AEP-48-TW mechanical drawing

4”

2”

24”

24”

1”

48”

24”

12”

4”

24”