Journal
IEEE MAGNETICS LETTERS
Volume 12, Issue -, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMAG.2021.3088400
Keywords
Spin electronics; spin torque; microwave devices; magnetic sensors; high-frequency applications; microwave magnetics
Funding
- U.S. Air Force Office of Scientific Research under MURI Grant [FA9550-19-1-0307]
- Army Research Office [W911NF-16-1-0472]
- National Science Foundation [DMR-1610146, EFMA-1641989]
- Oakland University Foundation
- Defense Threat Reduction Agency [HDTRA1-161-0025]
- Ministry of Education and Science of Ukraine [19BF052-01]
- National Academy of Sciences of Ukraine [1F]
- North Atlantic Treaty Organization Science for Peace and Security Programme Multi-Year Project [G5792]
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The study demonstrates that using a pair of independent STMDs with different resonance frequencies connected in parallel for signal frequency determination can significantly reduce the frequency determination error to approximately 30 MHz.
A single resonance-type spin-torque microwave diode (STMD) can be used as a quadratic detector to determine the frequency f of an external microwave signal when the power P-rf of this signal is known. However, unless the signal's frequency f exactly coincides with the detector's resonance frequency f(res), there exists a finite frequency determination error Delta f. In this letter,we show theoretically and experimentally that if a pair of independent STMDs with different resonance frequencies connected in parallel is used for the signal frequency determination, knowledge of the signal power is not necessary, and the frequency determination error can be substantially reduced to Lambda f approximate to 30 MHz at the frequency of f approximate to 5.0 GHz.
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