Robust phase shift keying modulation method for spin torque nano-oscillator
Autor: | Weisheng Zhao, Yan Zhou, Lang Zeng, Deming Zhang, Youguang Zhang, Hao-Hsuan Chen, Yang Liu |
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Rok vydání: | 2020 |
Předmět: |
Materials science
business.industry Mechanical Engineering Numerical analysis Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Amplitude modulation Mechanics of Materials Robustness (computer science) Phase noise Torque Optoelectronics General Materials Science Electrical and Electronic Engineering 0210 nano-technology business Frequency modulation Phase modulation Phase-shift keying |
Zdroj: | Nanotechnology. 31(37) |
ISSN: | 1361-6528 |
Popis: | The spin torque nano-oscillator (STNO) is a very promising candidate for next generation telecommunication systems due to its small size ~100 nm and high output frequency range. However, it still suffers low output power, usually smaller than µW, and very high phase noise. Also, the modulation method for the STNO should be further developed. The frequency modulation and amplitude modulation method for STNO can be easily applied because of the non-linear nature of STNO, yet it is very rare to see the proposal of a phase modulation method. In this work, we propose a robust phase shift keying modulation method for STNO. Its feasibility is demonstrated with both theoretical and numerical analysis, and its robustness is investigated under room temperature thermal noise. It is shown that our proposed phase modulation method can tune the phase arbitrarily, while the modulation speed can be as fast as 10 ns at room temperature. Comparing with the other phase modulation method, our approach has advantages of larger phase tuning range and stronger robustness against thermal noise. |
Databáze: | OpenAIRE |
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