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An interesting reflection phenomenon in a dual metal grating (DMG) structure is studied, which is related to the competition between Fabry-Prot (F-P) resonance effect and evanescent-field coupling effect inside the gap between the two composing single metal gratings. This competition leads to high angular sensitivity in response to the refractive index variation of the sample solution in the gap. A reflex optical sensor with high sensitivity based on DMG for detecting the change in refractive index is proposed and its performance theoretically is discussed. 相似文献
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安立公司最新开发出了无线网络仿真器(WNS)软件,用于增强MD8470A信令测试仪的功能.是一种用于移动终端应用软件开发和检验的基站仿真器。 相似文献
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We study transmission properties in configurations composed of two single metal gratings with different thicknesses. Choosing the perfect electric conductor excludes the influence of intrinsic material dispersion on transmission behaviors; and as such, we aim to reveal the contribution of geometric dispersion to electromagnetic transmission. Transmission suppression line, instead of a transmission suppression point, is discovered, denoting the curve of the wavelength versus the interval or the lateral displacement between the two single gratings when the transmission suppression appears. A simplified model is proposed to comprehend the underlying physics of this special phenomenon. 相似文献
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安立最新推出的MT8860 AWLAN测试装置设计用于满足所有集成了IEEE 802.11无线局域网技术的产品对生产测试的需求。MT8860A是一种单独的盒式测试装置,适用于发射机和接收器的测量。虽然它的设计是高度集成的,但是MT8860A替换了当前测试系统中常见的独立测试仪器和黄金射频。 相似文献
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本文主要介绍了中央广播电视总台实时转播报道神舟十六号载人航天飞船发射过程所使用的视频系统架构,并简单介绍摄像机控制单元仿真器在本次转播任务中所发挥的作用。 相似文献
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目前电场传感器只能探测电场强度矢量一维或者二维方向分量,尚无法精确地反映空中及地面电场强度大小。本文介绍一种新型三维电场传感器,由轴向、径向电场测量单元、驱动单元、电路单元、保温单元组成,用于探测空中及地面环境电场强度的三维方向矢量,克服了目前电场传感器探测电场强度时局限在一维或二维方向矢量的缺陷。在高空低温环境模拟试验中,当环境温度降到-50℃以下时,该传感器的保温单元使传感器内部温度一直处于零上,符合了电路板工作温度范围。在实际电场测试试验中,该传感器的电场测量单元验证了输出信号与电场之间的线性关系,与理论分析相符,证明了三维电场传感器的合理性。 相似文献