中文摘要：

针对高温超导约瑟夫森结器件的电磁辐射效率低、实用性差的问题,采用嵌入Quasi-Optical谐振腔的方式,研究YBa2Cu3O7高温超导双晶约瑟夫森结阵列的毫米波辐射特性。将基片作为介质谐振器,通过双晶约瑟森结阵列、介质谐振器和Quasi-Optical谐振腔的共同谐振作用加强了结阵列与外部微波电路的耦合。使用混频检测技术,在78.6K温度下,实验制备并测量了由644个双晶约瑟夫森结组成的串联结阵列的毫米波辐射特性,得到辐射峰的中心频率为69.3GHz,检测到的辐射功率约为20pW,提高了辐射效率。

英文摘要：

In view of the low efficiency and practicability of the electromagnetic radiation of high temperature superconducting Josephson junction devices, the millimeter-wave radiation characteristics of YBa2 Cu3 07 high temperature superconducting bicrystal Josephson junction arrays embedded in a Quasi-Optical resonator is studied. The substrate is taken as a dielectric resonator, the high-frequency electromagnetic coupling between Josephson junction arrays and external microwave circuits is improved by the interaction of Josephson junction arrays, the dielectric resonator and Quasi-Optical resonator. The radiation properties of serial arrays containing 644 bicrystal Josephson junctions are measured by superheterodyne technology at the temperature of 78.6 K,and the detected radiation power is approximately 20 pW at the central frequency of 69.3 GHz. The radiation efficiency is improved.