Nonflammable High Power Handling Absorber

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Nonflammable High Power handling Absorbers

Nonflammable high power handling absorbers 3680

Nonflammable high power handling EM absorbers for anechoic chambers

Our Nonflammable high power handling absorber, is a non-woven fabrics based hollow broadband microwave absorbers with fire retardant and microwave absorption impregnated.

It is mainly used in microwave anechoic chambers and can be used to shield the test equipment inside the chamber; under vertical incidence and oblique incidence conditions. It has better broadband performance; meanwhile, it has a very good scattering attenuation and isolation performance, and can be applied for all parts of the anechoic chambers.

It is a hollow broadband microwave absorber which is made of a heat resistance non-woven fabric dipped with flame retardants and microwave absorbing agents. It is mainly used in microwave anechoic chamber and covers the test equipment. Under the condition of normal incidence and oblique incidence, it has better broadband performance as well as scattering and isolation attenuation performance; it can be used in any part of the chamber.

3680-300 (300 mm height Nonflammable high power handling absorbers)

Characteristics:

Good flame retardant characteristics and won’t burn when it comes into contact with fire. It has oxygen index ≥ 60% and flame retardant B1 level.
Excellent high power handling capacity, it can withstand power irradiation (continuous wave) ≥ 6kW/m2
It uses keel mounting method without any adhesive.
The absorbing performance of such absorbers is equal to or better than the PU foam absorber with same height.
It adopts inorganic flame retardants and microwave absorption, not volatile, no smell and non-toxic; it is stable in long-term use.
Working conditions:
- Long-time working temperature: -50 °C ~ 120 °C
  Short-time working temperature: -100 °C ~ 150 °C
- Relative humidity: 55% ± 15%

Schematic diagram of high power handling nonflammable pyramid absorber

Schematic diagram of nonflammable pyramid absorber

Product specification and part numbers:

Part number	*Base size (mmmm)**	Pyramid quantity per unit	*Unit size ACB (mmmmmm)*	Standard weight (kg/m2)
3680-190	500×500	81	190×65×50	10
3680-300		64	300×60×50	13
3680-500		64	500×60×76	19
3680-690		36	690×80×90	20
3680-1000		16	1000×123×160	26
3680-1200		9	1200×163×180	28
3680-1500		9	1500×163×205	29
3680-1600		9	1600×163×220	40

Reflection loss / Shielding performance

Part number	Reflection loss under vertical incidence (-dB @ GHz)											Power handling capacity kW/m2
Part number	0.03	0.08	0.3	0.5	1	3	6	10	18	40	100	Power handling capacity kW/m2
3680-190					27	35	40	45	50	50	45	3
3680-300				25	35	40	50	50	50	50	45	3
3680-500			20	30	40	45	50	50	50	50	45	4
3680-690		8	25	35	40	50	50	50	50	50	45	5
3680-1000		11	30	40	45	50	50	50	50	50	45	5
3680-1200	5	13	35	40	45	50	50	50	50	50	45	6
3680-1500	11	14	35	40	50	50	50	50	50	50	45	6
3680-1600	14	16	35	45	50	50	50	50	50	50	45	6
These values are measured under laboratory conditions. Results may very in other situation. Please read our Guarantee.

Please note:

The 500 MHz data was obtained by low-frequency coaxial test method (GJB5239-2004); while 1 GHz data was obtained by far-field RCS test method (GJB2038A-2011)
The performance data listed in the above table is the guaranteed data, and the measured data would be equal to or better than the guaranteed data.
3680-1600 can also be used in EMC chambers such as 10 meters and 3 meters.
The bold part number is a stock item and can be delivered immediately
Certification: CE RoHS

General documentation

3680 - Nonflammable High Power Handling Absorbers TDS

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Nonflammable High Power Handling Absorber