Liquid crystal compound and high-frequency assembly containing same

Abstract

The invention discloses a liquid crystal compound and a high-frequency assembly containing the same. The liquid crystal compound contains 1-100% of a compound as shown in the description, 0-85% of a compound as shown in the description and 0-50% of a compound as shown in the description. The liquid crystal compound not only has low dielectric loss and a high quality factor, but also has the advantage of wide nematic phase temperature interval, and is suitable for the fields of filters, phase shifters, phased array radars, 5G communication networks and the like.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and a high-frequency component containing it, and is mainly applicable to the fields of filters, adjustable frequency selection surfaces, microwave phase shifters, microwave phased array antennas and the like. Background technique [0002] Liquid crystal materials are widely used in optoelectronic display devices. In recent years, liquid crystal materials have also been proposed for use in high-frequency components, such as microwave phase shifters. For example, liquid crystal based microwave phase shifters are reported in: [0003] Muller S.et al.(2004).Tunable passive phase shifter for microwave applications using highly anisotropic liquid crystals.Microwave SymposiumDigest,2004 IEEE MTT-S International. [0004] In a microwave phase shifter, the dielectric tuning rate of the liquid crystal material determines the tuni...

AI Technical Summary

Problems solved by technology

[0020] Although the compound has a large birefringence (Δn=0.35) and good performance at high frequencies, its rotational viscosity γ 1 =1300mPa·s, causing the response speed to become slow

Moreover, the compound has a melting point of 89°C, a higher melting point leads to poor compatibility at low temperatures

Images