Investigation of Superconductive Quasiparticle Mixers for Astronomical Receivers

摘要 利希滕贝格W. AST-9618747 资金将用于支持为亚毫米射电天文学接收机开发超导体-绝缘体-超导体（SIS）混频器的四项举措。 在这些任务的第一个集成平衡铌混频器电路将被开发，以减少大气和本地振荡器的SIS接收机系统的噪声。 微机械SIS混频器电路将作为观测扩展源的接收机设计的基础进行研究。 基于Nb/Al边缘结的行波混频器将被制造和评估。 在第四项任务中，将使用离子束蚀刻技术来生产尺寸非常小的测辐射热混频器。

Abstract LICHTENBERGER, A. W. AST-9618747 Funds will be used to support four initiatives in the development of Superconductor-Insulator-Superconductor (SIS) mixers for submillimeter radioastronomy receivers. In the first of these tasks integrated balanced Nb mixer circuits will be developed to reduce atmospheric and local oscillator noise in SIS receiver systems. Micromachined SIS mixer circuits will be investigated as a basis of receiver design for observing extended sources. Traveling wave mixers based on Nb/Al edge junctions will be fabricated and evaluated. In the fourth task ion beam etching techniques will be used to produce bolometric mixers with very small dimensions.