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Ku Band High-Q Switchable Cavity Filter Using Vanadium Dioxide (VO2) Microwave Disk-Shaped Switch

机译:使用二氧化钒(VO 2 )微波盘形开关的Ku波段高Q开关腔滤波器

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This paper presents the design, fabrication and measurements of Ku-band high-Q tunable resonator and tunable two-pole filter using Vanadium Dioxide (VO2) Phase Change Material (PCM) diaphragm. The device consists of a copper surface mounted cavity, bonded on a sapphire substrate, on which are processed the VO2-based disk-shaped irises. The irises are located opposite to capacitive posts, in the middle of each cavities, where the E-field of the resonant mode is maximum in order to ensure a wide tuning range. Using the reversible Metal-to-Insulator Transition (MIT) of VO2, the resonant frequency of the resonators is shifted by changing the conductivity of the switches. Electromagnetic simulations have been conducted and exhibits 8% frequency shift from 13.68 GHz to 14.7 GHz and an unloaded quality factor (Qu) from 1198 to 142.
机译:本文介绍了使用二氧化钒(Vo)的Ku波段高Q可调谐谐振器和可调谐两极滤波器的设计,制造和测量 2 )相变材料(PCM)膜片。该器件由铜表面安装的空腔组成,该空腔粘接在蓝宝石衬底上,并在其上加工VO 2 盘状虹膜。虹膜位于电容腔的对面,位于每个腔体的中间,在该腔体中,共振模式的E场最大,以确保宽的调谐范围。使用VO的可逆金属到绝缘体过渡(MIT) 2 ,通过改变开关的电导率来改变谐振器的谐振频率。进行了电磁仿真,并展示了从13.68 GHz到14.7 GHz的8%频移和空载品质因数(Q u )从1198年到142年之间。

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