建筑室内S带电磁污染控制板材的薄形化研究

本文报道了基于k／4型电磁波吸收原理，通过理论设计和模拟分析，以石膏板为介电材料，采用住相调制膜设计制备吸波体，成功实现了电磁波吸收体的薄化。研究表明，多边形及圆环形位相调制膜结构都可以实现吸收体的薄化和吸收宽化，但多边形效果更好。实验表明，环宽度15mm，间距为10mm的正六边形三环结构膜可以实现在2．2GHz附近，达到-25dB吸收，并呈现更大宽化，整体-10dB带宽达到70％且可减少介电层厚度15％。新材料可用于室内电磁环境的改善和污染控制。

The Research on Thinning of S--band Boards for the Electromagnetic--pollute Protection in Buildings

This paper reports that based on the principle of λ/4 type electromagnetic wave absorption, through theoretical design and simulation analysis , use plasterboard as dielectric material , design and preparation absorber by phase modulation membrane , has successfully achieved the thinning of the absorber. The research have shown that the polygon and annular phase-modulated film structure can make absorber thin and widen the absorption, but the effect of polygon phase--modulated film structure is better than that of the annular. Experiments show that, an hexagon three--ring structure film whose Width of 15ram and spacing of 10mm can be achieved at 2. 2GHz nearby, --25dB absorption is reached , greater widening is presented. when all the bandwidths are --10dB, the rang of absorbing are up to 70%, the thickness of the dielectric layer is also reduced by 15 %. The New materials can be used for indoor electromagnetic environmental improvement and pollution control.