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Microwave Absorbers

Microwave Absorbers
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Absorber forMicrowave andMillimeter WaveTest Chambers >

History > With a worldwide reputation for high quality and innovative absorber techniques, TDK has established itself as the premierdesigner of anechoic chambers for use in microwave measurements. As the original inventor of ferrite and ferrite for use in RF suppression techniques, as well as an innovator of subsequent designs involving RF absorbing foams, TDK has benefited from almost seventy years of accumulated experience in the field. With so many years of RF technology expertise and many global installations successfully completed, our team has what it takes to design and validate your...

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TDK is the only company that manufactures both the ferrite tile andthe complementary foam absorber. This is both advantageous and critical for both low and high frequency performance, high power dissipation, and broadband behavior. TDK uses very sophisticated manufacturing techniques to create both our ferrite and our foam absorber materials. These techniques allow us to control every parameter of the materials which impact perfor- mance and safety. By adhering to strict quality production checks throughout the creation process, we can bypass many time- consuming and unnecessary steps (e.g....

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700 W/m > 2 power handling Excellent performance at normal and oblique angles Clean room rated Closed-cell polyethylene construction Fire retardant > Clean Room RatingFS 209E Class 100; FrequencyReflectivityReflectivity ISO 14644-1 Class 5 Range(Typical)(Guaranteed) Fire RetardancyNRL 8093 Test 1, 2, and 3; UL94HBF .5GHz .8GHz֖30 dB25 dB > Data Sheet Tensile Stability4 kg/cm > 2 .8GHz ֖ 1GHz40 dB֖35 dB Product Safety UL ListedHumidity ResistanceNo deterioration from water. 1GHz 1.5GHz֖40 dB35 dB 1.5GHz ֖ 2GHz40 dB֖35 dB No hydrolysis effect.Chemical StabilityNot readily attacked by acids,...

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700 W/m > 2 power handling Normal & oblique performance Clean room rated Closed-cell polystyrene construction Fire retardant > Clean Room RatingFS 209E Class 10; ISO 14644-1 Class 4 FrequencyReflectivityReflectivity Fire RetardancyNRL 8093 Test 1, 2, and 3; UL94HBF Range(Typical)(Guaranteed) Tensile Stability4 kg/cm > 2 20MHz 80MHz֖25 dB20 dB > Data Sheet Product Safety UL ListedHumidity ResistanceNo deterioration from water. 80MHz ֖ 100MHz25 dB֖20 dB .1GHz .5GHz֖25 dB20 dB No hydrolysis effect.Chemical StabilityNot readily attacked by acids, alkalines, .5GHz ֖ 1GHz30 dB֖25 dB 1GHz 2GHz֖45...

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50 kW/m > 2 power handling Heat handling < 800 > o C Clean room rated Good high frequency performance Fire retardant > Clean Room RatingFS 209E Class 100; FrequencyReflectivityReflectivity ISO 14644-1 Class 5 Range(Typical)(Guaranteed) Fire RetardancyNRL 8093 Test 1, 2, and 3; UL94HBF 1GHz 2GHz֖25 dB20 dB > Data Sheet Tensile Stability10 kg/cm > 2 2GHz ֖ 5GHz35 dB֖30 dB Humidity ResistanceNo deterioration from water. 5GHz 10GHz֖40 dB35 dB No hydrolysis effect.Chemical StabilityNot readily attacked by acids, alkalines, 10GHz ֖ 20GHz40 dB֖35 dB or petroleum-based liquids 20GHz 40GHz֖40 dB35...

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THE TDK ISO-CERTIFIED MANUFACTURING TDK ABSORBING MATERIALS 11 >

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FrequencyEvaluation RangeMethod 110 MHz to 200 MHzTri-plate Strip Line 2200 MHz to 500 MHzParallel Plate Strip Line 380 MHz to 10 GHzNRL Arch and VSWR Method 41 GHz to 100 GHzFree Space VSWR Method >

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The clean room classification standards FS 209E and ISO 14644-1 require specific particle count measurements and calculations to classify the cleanliness level of a clean room or clean area. TDK absorber is a closed cell material that is well suited for FS and ISO clean room requirements. The reflectivity performance of the absorber from 80 MHz to10 GHz is measured by the NRL method by comparing the difference between the reflection from a reference metal plate and that of the absorbers, which are positioned by the lifting system. The normal incident angle test setup is shown below.The...

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