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Source conductance scaling for high frequency superconducting quasiparticle receivers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ke, Qing Feldman, M. J. |
| Copyright Year | 1992 |
| Description | It has been suggested that the optimum source conductance G(sub s) for the superconductor-insulator-superconductor (SIS) quasiparticle mixer should have a l/f dependence. This would imply that the critical current density of SIS junctions used for mixing should increase as frequency squared, a stringent constraint on the design of submillimeter SIS mixers, rather than in simple proportion to frequency as previously believed. We have used Tucker's quantum theory of mixing for extensive numerical calculations to determine G(sub s) for an optimized SIS receiver. We find that G(sub s) is very roughly independent of frequency (except for the best junctions at low frequency), and discuss the implications of our results for the design of submillimeter SIS mixers. |
| File Size | 500424 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930018582 |
| Archival Resource Key | ark:/13960/t7rn82t4n |
| Language | English |
| Publisher Date | 1992-01-01 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Volt-ampere Characteristics Sis Superconductors Mixing Circuits Submillimeter Waves Josephson Junctions Radio Receivers Noise Temperature Current Density Quantum Theory Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
