Semiconductor-Tuned HTS Filters for Ultra-Sensitive RF Receivers (SURF)
Abstract
(U) The Semiconductor-Tuned HTS Filters for Ultra-Sensitive RF Receivers (SURF) program will increase the tuning speed of high-temperature semiconducting (HTS) filters, from about a second with present mechanical methods, to microsecond speeds required for systems such as the Joint Tactical Information Distribution System (JTIDS). The technology for such a million-fold improvement relies upon semiconductor tuning, properly mated with the superconducting filter materials; the fundamental challenge – that normal electrical conductivity and superconductivity cannot coexist in the same circuit – has been overcome. In addition to interference-rejection at microsecond speeds, these filters make it possible to perform wide spectral searches with unprecedented frequency resolution, enabling detection of very weak emissions (signatures) characteristic of threat systems. Such a capability within a small add-on box to the RF receiver, will revolutionize the performance of all types of receivers, with applications ranging from communications to signals intelligence, and enable operation in the densest of interference environments.
Document Details
- Document Type
- Accomplishment
- Publication Date
- Oct 01, 2011
- Source ID
- 5feff13f76f454c65ecfd6ab3c7123e4
Related Documents
- Root: ELECTRONICS TECHNOLOGY