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在现代建筑设计中,节能玻璃得到了越来越广泛的应用。节能玻璃表面镀上了一层阻性金属氧化物,这层金属氧化物能有效地屏蔽射向室内的红外线,同时将室内物体所辐射的长波保留在室内,能够起到很好的隔热作用并提高能量利用率,从而使建筑物冬暖夏凉。需要指出的是,阻性金属氧化物表面对移动信号、GPS等电磁波的衰减高达30dB。通过将金属氧化物层刻蚀出具有带通特性的频率选择表面(Frequency Selective Surface,FSS)单元,可以保证在阻隔红外线能量的情况下大大提高微波射频信号的透波率。本文在节能玻璃上设计了3种不同的带通FSS,与以往文献提出的十字形FSS相比,能够在保证900～2000MHz频段信号同等透波率的情况下,隔热效果更好。
In modern architectural design, energy-saving glass has been more and more widely used. Energy-saving glass surface coated with a layer of resistive metal oxide, this layer of metal oxide can effectively shield the infrared radiation into the room, while the long-wave radiation in the interior objects remain indoors, can play a good thermal insulation And improve energy efficiency, making the building warm in winter and cool in summer. It should be pointed out that the resistive metal oxide surface of mobile signals, GPS and other electromagnetic wave attenuation up to 30dB. By etching the metal oxide layer with frequency selective surface (FSS) unit with bandpass characteristic, it is ensured that the microwave radio frequency signal has a great improvement in the transmissivity when the infrared energy is blocked. In this paper, three different FSSs are designed on the energy-saving glass. Compared with the cross-shaped FSS proposed in the prior art, the present invention can provide better insulation under the same signal transmission rate of 900-2000MHz.