This work is supported by the National Key R&D Program of China under Grant 2018YFF01013600; National Natural Science Foundation of China under Grant 61671123; and National Natural Science Foundation of China under Grant 61001027.
机构署名：
本校为其他机构
院系归属：
化学与环境工程学院
摘要：
Liquid crystals (LCs) have already been widely used in reconfigurable microwave devices as an excellent phase change material for their electric tunable dielectric properties. An accurate value of complex permittivity on a given LCs is the most important parameter on designing microwave devices. In this paper, a novel method is proposed to realise a broadband permittivity measurement. On the basis of the theory of perturbation, it consisted of a double-ridge waveguide cavity and the given vector network analyser. In order to have a broadband me...
