摘要
本文设计了一套工作于Ka波段、用于大气环境下高达1600℃超高温条件下低损耗介质材料复介电常数测量的椭球开放腔测量系统。与传统用于复介电常数高温测量的半球型开放腔相比,该系统因介质片及其支架与测量系统组件不接触,因此适用于更高温度的测量,且保留了其测量精度高的优点。本文完成了测量系统的设计与常温下的仿真验证工作,给出了相对介电常数的反演公式,并通过CST仿真结果验证了公式的正确性。实物测试及损耗正切的测量验证将在后续进行。
In this paper, a novel set of ellipsoidal open cavity system operating in Ka-band for dielectric constant measurement at super-high temperatures up to 1600℃ in air is designed. Compared to traditional hemispherical open cavity for high-temperature measurements, this system is particularly suitable for measuring at higher temperature environments because the sample and its holder are thermally insulated from system components and retains the advantage of high measurement precision. This paper provides the design procedure and simulation verification of the measurement system at room temperature, gives the deduced formula of relative dielectric constant, and verifies the correctness of the formula by CST simulation results. Physical testing and verification of loss tangent will be carried out later.
出处
《微波学报》
CSCD
北大核心
2017年第S1期310-313,共4页
Journal of Microwaves
基金
国家自然科学基金(61671146)
关键词
相对介电常数
超高温测量
椭球腔
开放腔法
dielectric constant
super-high temperature measurements
ellipsoidal open cavity
open-cavity method
