ECCOSORB®AN
Flexible Foam Sheet Broadband Microwave Absorber
FLEXIBLE FOAM SHEET BROADBAND MICROWAVE ABSORBER:
Eccosorb AN is a lightweight, flexible, polyurethane foam sheet broadband microwave absorber.
It is designed to reflect less than -17 dB of normal incident energy above specified frequencies and
relative to a metal plate.
FEATURES AND BENEFITS
•
•
•
•
Carbon loaded, multilayer absorber
Broadband free space absorber
Low weight
RoHS/Reach compliant
MARKETS
• Commercial Telecom
• Security and Defense
• Test & Measurement
SPECIFICATIONS
TYPICAL PROPERTIES
ECCOSORB AN
Front surface color (facing oncoming EMI)
Back surface color
White
Black
Max. Service Temperature °C (°F)
Power Handling, W/cm²
Fire Retardancy
90 (194)
0.15
UL94-HBF
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
APPLICATIONS
• Eccosorb AN is commonly used for the lining of small test chambers to reduce reflections.
• Eccosorb AN is being used for reducing crosstalk between adjacent antennas, shrouding
antennas to improve the antenna patterns and undesired backlobes, as well as selective
shadowing of parts of a target for RCS measurements.
• Shadowing of posts and supports in anechoic chambers, and as absorbing blankets for testing
radar systems without harm to personnel.
• For isolation of components or antennas by means of insertion loss, it can be used without a
metal backing.
AVAILABILITY
• Eccosorb AN is available in six standard grades depending upon the lowest desired frequency of
operation, starting from 600 MHz.
• Standard sheets are 61 cm X 61 cm (24” x 24”)
• Eccosorb AN is available in other sizes and customer specified configurations, incorporating
miter cuts or attachment to metal parts.
• It can be manufactured, on special order, on a mandrel, to take a contoured shape.
Americas: +1.866.928.8181
Europe: +49.(0).8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com
Eccosorb® AN
Typical Reflectivity
Reflectivity
range
Nominal
Thickness
Nominal Weight
0
-5
(>17 dB)
cm (inch)
kg/piece (lb/piece )
AN-72
>20 GHz
0.6 (0.24)
0.25 (0.6)
AN-73
>7.5 GHz
1.0 (0.39)
0.50 (1.1)
AN-74
>3.5 GHz
1.9 (0.75)
0.70 (1.5)
AN-75
>2.4 GHz
2.9 (1.14)
0.80 (1.8)
AN-77
>1.2 GHz
5.7 (2.24)
1.50 (3.3)
AN-79
>600 MHz
11.4 (4.49)
2.95 (6.5)
Reflectivity (dB)
-10
AN-72
AN-73
AN-74
AN-75
AN-77
AN-79
-15
-20
-25
-30
0,5 0,9 1,1 1,5
2
4
6
8
10
12
14
16
18
Frequency (GHz)
ENVIRONMENTAL PROPERTIES
• Eccosorb AN is not waterproof and will not operate correctly when wet. Since there is no
washout, it will function as expected after being allowed to dry.
• A special CERSEAL coating to prevent moisture uptake in high humidity to moderately wet
environments is available on special request.
• For high humidity to moderately wet environments, sealed versions of Eccosorb AN are
available. They are essentially the same material as Eccosorb AN but the absorber is sealed to
provide improved outdoor properties.
The available types are :
Eccosorb AN-xx-W :sealed with neoprene coated nylon fabric, color olive green.
Eccosorb AN-xx-WPC : sealed with a poly-urethane coating, different colors available on request
Eccosorb AN-xx-WPVC :sealed with a PVC plastic, different colors are available on request and
can be provided with eye-lets for fixing
• Reflectivity performance is similar to the standard Eccosorb AN product;
INSTRUCTIONS FOR USE
• To obtain low reflectivity, the absorbers must be mounted on a metal surface. If a metal surface
is not available, Eccosorb AN can be supplied metal backed with aluminum foil (ML).
• For correct operation, Eccosorb AN must have the white (front) face towards the signal to be
attenuated.
• Layering of multiple pieces or slicing off part of the thickness will degrade the overall
performance.
• Reflectivity performance also degrades for off-normal bistatic incidence and at different rates
for different polarizations.
• Eccosorb AN can be securely bonded to itself or to other materials such as metal, wood, and
common plastic composites. Our specific Eccostock® foam adhesive is recommended.
RFP-DS-AN 081215
Any information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird Technologies materials rests with the end user. Laird
Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any
kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2015 Laird Technologies, Inc. All Rights Reserved. Laird, Laird
Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein provides a license
under any Laird Technologies or any third party intellectual property rights.
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