利用Fabry-Perot谐振腔和介质谐振天线实现约瑟夫森结阵列的自辐射

本文提出了一种利用Fabry-Perot谐振腔和介质谐振天线,同时集成偶极天线阵实现约瑟夫森结阵列自辐射的方法.在介质基片上制作集成偶极天线阵的双晶约瑟夫森结阵列,并将其嵌入到Fabry-Perot谐振腔内.将基片作为一介质谐振天线,使其与Fabry-Perot谐振腔谐振在同一频率下,从而通过高频电磁耦合机制实现结之间以及结与外部微波电路之间的耦合.文中分别进行了数值仿真和实验研究.对一个包含166个双晶约瑟夫森结的结阵列进行了液氮温度时的测试,在片外（off-chip）检测到了75.2GHz,10pW的辐射信号,与仿真结果吻合.该方法为基于约瑟夫森效应的太赫兹（THz）源提供了一种可能.

Self-radiation of Josephson junction arrays by using Fabry-Perot resonators and dielectric resonator antennas

This paper presents a method for self-radiation of Josephson junction arrays by using Fabry-Perot resonators and dielectric resonator antennas. A Josephson junction arrays integrated with dipole arrays was fabricated on dielectric substrates, and embedded in a Fabry-Perot resonator. Considered as a dielectric resonator antenna, the substrate was driven to resonate in appropriate mode at the same frequency as the Fabry-Perot resonator, which realized a coupling between Josephson junctions as well as a coupling between the junctions and microwave structures by means of a resonant interaction between junctions and resonators. Both numerical simulations and experiments were performed. A junction array composed of 166 YBCO bicrystal junctions was measured at liquid nitrogen temperature. And an off-chip radiation of 75.2 GHz and 10 pW was detected, which was in accordance with the simulation result. This method offers a possibility of THz sources based on Josephson Effect.