Superconducting Microwave Device Properties and Applications

摘要: The low microwave losses associated with high-temperature superconducting (HTS) thin films allow implementation of a variety passive devices performance superior to similar components made conventional, room-temperature materials. These HTS must, operate at cryogenic temperatures, typically 77 K, which imposes severe requirements on packaging in terms size, weight, and power consumption, perhaps limiting the range applications for this technology. In addition, developments area are tightly coupled cryocooler technology, their reliability cost development an infrastructure suitable production useful reasonably cost. Microwave using deposited single-crystal substrates generally configured planar geometries following well-known device practices such as microstrip, coplanar waveguide, stripline. Both distributed lumped-element have been demonstrated, some being today advanced preproduction stage. fundamental ideas behind will be reviewed chapter, followed by discussion most promising demonstrated date properties potential. point view adopted here is that practical system situations advantages over conventional approaches apparent.