Electrically-Small Superconducting Wide-Bandwidth Receiver Based on Series Arrays of Nano-Josephson Junctions

ABSTRACT: In this program, we propose to determine the feasibility to develop a wide-bandwidth receiver utilizing series arrays of high-transition-temperature superconducting (HTS) nano Josephson junctions. We will perform simulations of high-Tc ion-damage junction arrays and investigate the effects of non-uniformity and dimensions on linearity, dynamic range and sensitivity. We will perform mask layout and design to build test high-Tc ion-damage junction arrays with different design criteria to investigate linearity and voltage response. Finally, we will measure the devices to develop enough information to confirm our simulation findings, and to determine which approach holds the most promise for a Phase II effort. Successful completion of these tasks will give us the building blocks to fabricate prototype arrays in Phase II and demonstrate improved receiver capabilities.; BENEFIT: Superconducting circuits are expected to lead to improve wide-band receivers over a broad frequency range for both the military and commercial marketplace.