High-Q, Tunable Microwave Superconducting Strip-Line Filters

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: F19628-01-C-0032
Agency Tracking Number: 01-0360
Amount: $64,867.00
Phase: Phase I
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
2820 East College Avenue, State College, PA, 16801
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dean Anderson
 Director, New Product Dev
 (814) 238-7485
Business Contact
 Wesley Hackenberger
Title: General Manager
Phone: (814) 238-7485
Email: wsh@trsceramics.com
Research Institution
The goal of this SBIR program is to develop a high Q (>10,000) tunable filter by using a cryogenic piezoelectric actuator to adjust the position of a split-ring stripline resonator made from high temperature superconductor. The critical technology in thiswork is the recent development of single crystal piezoelectric materials that have much larger field induced strains and piezoelectric properties than conventional PZT ceramics. In addition, single crystal piezoelectric have cryogenic propertiesequivalent to those of PZT ceramic at room temperature making single crystals, by far, the best cryogenic piezoelectric actuation technology in existence. High-strain, stacked crystal actuators will provide approximately 20% tunability with tuning speedsin the range of 1 to 10 us. Thus, combining single crystal piezoelectrics with superconducting filters will, for the first time, result in a viable high Q tunable filter.As demand for the communications frequency spectrum increases, there is a larger needfor high Q filters to achieve greater frequency discrimination. High temperature superconducting filters can fill this need but to minimize the number of filters and therefore reduce systems costs, the filters need to be tunable. Applications for high Qtunable filters would be any commercial or DOD communications system that requires a high degree of frequency discrimination, for example, increased portable phone usage, increased air traffic frequencies for aircraft safety and wireless data networkservices.

* information listed above is at the time of submission.

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