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美国超导技术公司(STI)是具有世界领先地位的高温超导产品提供商,最近它研制出了第一个完全独立的高温超导微波装置。. 这个公司研制的调频连续波雷达系统(FMCW)包括一个高温超导微波装置,永久性密封杜瓦,闭式循环斯特林低温制冷器和所有必要的微波输出电路。雷达系统的核心部分是一个共面延迟线。延迟线由T_c低于100Κ的TaBaCaCO高温超导薄膜做成。X波段延迟线为一个0.4时的正方形,重33克,比同类RG141同轴电缆延迟线轻50％,小90％。 专门设计的杜瓦/微波装置的封装可以提供长寿真空,低热质,宽频带和低插损。专门的设计效果是通过一个气密封的空杜瓦来实现的。真空夹套里放有吸气剂,用以吸收微波器件可能放出的水
American Superconductivity Inc. (STI), a world leader in high temperature superconducting products, recently developed the first fully independent high temperature superconducting microwave device. The FMCW system developed by the company includes a high temperature superconducting microwave unit, a permanent seal Dewar, a closed loop Stirling cryogenic cooler and all the necessary microwave output circuits. The heart of the radar system is a coplanar delay line. The delay line is made of TaBaCaCO high temperature superconducting thin film with T_c lower than 100K. The X-band delay line is a 0.4-h square with a weight of 33 grams, which is 50% smaller and 90% smaller than a similar RG141 coaxial cable delay line. Dedicated Dewar / microwave device packages provide long life vacuum, low thermal mass, wide bandwidth and low insertion loss. The special design effect is achieved through a hermetically sealed empty Dewar. The vacuum jacket contains a getter to absorb the water that microwave devices may emit