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通过适当的控制已生长成了面积达几个平方厘米,厚达20μ高质量的外延钇铁石榴石(YIG)膜,这就可以进行两种各不相同然而却是重要的新颖微波集成电路类型的研究。第一种是基于电调谐振器实现了平面园盘化。例如,含有四个单元的带节滤波器组(bandsectioning filter bank)已实现,单个带宽为2.4MHz,插入损耗为15db。第二种是基于在YIG膜中传输磁波。这种技术是对表面声波技术的有效的补充,它具有在微波频率操作方便的优点。用适当编码的换能器色散和非色散的终端性质都是可以作到的。而借助磁波传输的各向异性又可制作电调延迟线。YIG样品的选择刻蚀法使可以与其它器件集成化的磁波导和定向耦合器有实现的可能。
With appropriate control, epitaxial yttrium iron garnet (YIG) films have been grown to high quality up to several centimeters in area and up to 20μ thick, allowing for two distinct but important new types of microwave integrated circuits Research. The first is based on the ESC resonator to achieve a flat disk. For example, a bandsectioning filter bank with four cells is implemented, with a single bandwidth of 2.4MHz and an insertion loss of 15db. The second is based on the transmission of magnetic waves in a YIG film. This technique is an effective complement to SAW technology and has the advantage of being easy to operate at microwave frequencies. Dispersion and non-dispersive termination properties with properly coded transducers are all possible. With the anisotropy of magnetic wave transmission can also produce ESC delay line. The choice of YIG samples Etching allows magnetic waveguides and directional couplers that can be integrated with other devices.