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LIGHTWEIGHT MICROWAVE ABSORBERS WITH LOOP-LIKE SURFACE IRREGULARITIES BASED ON FOILED MATERIALS FOR ANECHOIC CHAMBERS
ABSORBENTES DE MICROONDAS LIGEROS CON IRREGULARIDADES SUPERFICIALES EN FORMA DE BUCLE A BASE DE MATERIALES LAMINADOS PARA CÁMARAS ANECOICAS
DOI:
https://doi.org/10.15446/mo.n69.110073Keywords:
absorption coefficient, electromagnetic radiation, foiled material, microwave absorber (en)coeficiente de absorción, radiación electromagnética, material laminado, absorbente de microondas (es)
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The paper presents new technique of foil-containing microwave absorbers manufacturing. These absorbers surface is characterized by the periodic structure and contain loop-like irregularities made from foiled polymer material. Electromagnetic radiation absorption characteristics in the frequency range 0.7–17.0 GHz of the experimental samples of the absorbers manufactured in accordance to the presented technique are described in the paper. These characteristics were obtained to experimentally justify the presented technique. The amplitude of the described characteristics changes from 0.5 to 0.95 in frequency ranges 0.7–2.0 GHz, 4.0–16.0 GHz. It means that the absorbers, manufactured in accordance to the presented technique are wide-band. Moreover, these absorbers are characterized by lower weight compared to the analogs. They are prospective for use for development of movable partitions for anechoic chambers.
El documento presenta una nueva técnica de fabricación de absorbentes de microondas que contienen láminas. La superficie de estos absorbentes se caracteriza por la estructura periódica y contiene irregularidades en forma de bucle hechas de material polimérico laminado. En el artículo se describen las características de absorción de radiación electromagnética en el rango de frecuencia de 0.7–17.0 GHz de las muestras experimentales de los absorbentes fabricados de acuerdo con la técnica presentada. Estas características se obtuvieron para justificar experimentalmente la técnica presentada. La amplitud de las características descritas cambia de 0.5 a 0.95 en rangos de frecuencia de 0.7–20 GHz, 4.0–16.0 GHz. Esto significa que los absorbentes, fabricados de acuerdo con la técnica presentada, son de banda ancha. Además, estos absorbentes se caracterizan por un menor peso en comparación con los análogos. Su uso está previsto para el desarrollo de tabiques móviles para cámaras anecoicas.
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