SUPERCONDUCTIVE EFFECTS IN THIN FILMS.
Abstract
This report describes the mixing of two microwave signals which has been accomplished unambiguously in experiments employing the non-linear I-V characteristic of superconducting tunneling samples. Although a doubly-resonant microwave cavity was used in the earliest experiments, difficulties with cavity Q-values led to the adoption of a scheme in which the sample was situated roughly a quarter guide wavelength from the end of a shorted waveguide. The latter scheme, where the sample sees predominantly rf E-field, was very effective for both mixing and video detection. The 30 Mcps mixed signal was amplified and, finally, displaced on an oscillascope. The noise and rather low sensitivity of the post-mixer amplification and display arrangement precluded obtaining sufficient data for detailed analysis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1963
- Accession Number
- AD0428788
Entities
People
- E. J. Mcniff Jr.
- S. Shapiro
Organizations
- Arthur D. Little