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首页> 外文期刊>Microwave and optical technology letters >A NEW NARROW BAND FREQUENCY SELECTIVE SURFACE GEOMETRY DESIGN AT THE UNLICENSED 2.4-GHz ISM BAND
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A NEW NARROW BAND FREQUENCY SELECTIVE SURFACE GEOMETRY DESIGN AT THE UNLICENSED 2.4-GHz ISM BAND

机译：未许可的2.4 GHz ISM频段上的新型窄带频率选择性表面几何设计

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摘要

Wireless devices in the unlicensed instruments, scientific, and measurements (ISM) bands cause mutual interference in indoor environments. This interference degrades the system performance and compromises security. Transforming existing building walls to a band stop frequency selective surface (FSS) can be an efficient solution for such problems. This work is proposed to design FSS for interference mitigation and network security within the buildings in the unlicensed 2.4-GHz ISM band and to provide maximum transparency at broadcast frequencies. A 2.4-GHz ISM band is a relatively narrow band which cannot be met by a conventional FSS for a wide range of incidence angle. Whereas wireless signals in indoor environment have a wide range of incidence angle. To obtain the desired narrow band response, a new FSSs element geometry is introduced which has a stable frequency response for TE polarization when the angle of incident wave is varied from 0° to 70°. HFSS software is used for simulation and design purposes. The obtained simulation and measurement results show that desired frequency response is achieved for TE polarization successfully.
机译：未经许可的仪器，科学和测量（ISM）频段中的无线设备会在室内环境中引起相互干扰。这种干扰会降低系统性能并损害安全性。将现有建筑物的墙壁转换为带阻频率选择性表面（FSS）可能是解决此类问题的有效方法。提出这项工作的目的是设计FSS，以在免许可的2.4 GHz ISM频带内的建筑物内减轻干扰和提高网络安全性，并在广播频率上提供最大的透明度。 2.4 GHz ISM频带是一个相对较窄的频带，对于宽的入射角范围，常规FSS无法满足。而室内环境中的无线信号的入射角范围很广。为了获得所需的窄带响应，引入了一种新的FSSs元件几何形状，当入射波的角度从0°更改为70°时，该几何形状对TE极化具有稳定的频率响应。 HFSS软件用于仿真和设计目的。所获得的仿真和测量结果表明，成功实现了TE极化所需的频率响应。

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