Published March 1998
| public
Journal Article
Low-loss NbTiN films for THz SIS mixer tuning circuts
Abstract
Recent results at 1 THz using normal-metal tuning circuits have shown that SIS mixers can work well up to twice the gap frequency of the junction material (niobium). However, the performance at 1 THz is limited by the substantial loss in the normal metal films. For better performance superconducting films with a higher gap frequency than niobium and with low RF loss are needed. Niobium nitride has long been considered a good candidate material, but typical NbN films suffer from high RF loss. To circumvent this problem we are currently investigating the RF loss in NbTiN films, a 15K Tc compound superconductor, by incorporating them into quasi-optical slot antenna SIS devices.
Additional Information
© 1998 Plenum Publishing Corporation. Received January 7, 1998. This work was supported in part by NASA grants NAG5-4890 and NAGW-107, NAG2-1068, the NASA/JPL Center for Space Microelectronics Technology and the Caltech Submillimeter (NSF grant AST-9615025).Additional details
- Eprint ID
- 104625
- Resolver ID
- CaltechAUTHORS:20200728-174942088
- NAG5-4890
- NASA
- NAGW-107
- NASA
- NAG2-1068
- NASA
- AST-9615025
- NSF
- Created
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2020-08-04Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field