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Monolithic Spin-Torque Microwave Diode Spectrograph

Award Information
Agency: Department of Defense
Branch: Army
Contract: W56HZV-17-C-0039
Agency Tracking Number: A16A-016-0130
Amount: $140,534.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: A16A-T016
Solicitation Number: 2016.0
Solicitation Year: 2016
Award Year: 2016
Award Start Date (Proposal Award Date): 2016-11-17
Award End Date (Contract End Date): 2017-05-16
Small Business Information
11409 Valley View Road
Eden Prairie, MN 55344
United States
DUNS: 114264351
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Joseph Davies
 (952) 918-1154
Business Contact
 Curt Reynders
Phone: (952) 829-9170
Research Institution
 Oregon State University
 Patricia Hawk
3001 Kelley Engineering Center \N
Corvallis, OR 97331
United States

 (541) 737-4933
 Nonprofit College or University

This Phase I Small Business Technology Transfer program will simulate and demonstrate the feasibility of a Spin-torque microwave diode spectrograph for real-time determination and monitoring of incident microwave signals. The microwave detection will be performed by a bandwidth encompassing parallel array of nano-patterned magnetic tunnel junctions (MTJs). When an ac current of microwave frequency flows through an MTJ the magnetization of the free layer begins to precess. The MTJ resistance change couples to the ac current resulting in a measurable change in dc voltage. The sensitivity of this dc bias has been shown to be comparable to that of state-of-the-art Schottky diode detection with the advantage that the proposed detector is also frequency selective. In this program we use a combination of micromagnetic modeling, coupled with circuit simulations and expreimental fabrication and analysis of MTJ arrays to develop the best approach to prototyping the spectrograph. Consideration will be given to not just the array, but how the microwave input signal is conditioned and what the output will consist of. This will allow the opportunity to tune the circuit to the MTJs for optimal performance and result in a robust prototype design.

* Information listed above is at the time of submission. *

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