A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator

Raghav Sharma; Naveen Sisodia; Ezio Iacocca; Ahmad A. Awad; Johan Åkerman; P. K. Muduli

doi:10.1038/s41598-017-13551-5

A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator

Raghav Sharma, Naveen Sisodia, Ezio Iacocca, Ahmad A. Awad, Johan Åkerman, P. K. Muduli

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Abstract

An important property of spin-torque nano-oscillators (STNOs) is their ability to produce a frequency modulated (FM) signal, which is very critical for communication applications. We here demonstrate a novel single sideband (SSB) modulation phenomenon using a magnetic tunnel junction (MTJ)-based STNO, which saves transmission bandwidth and in principle should minimize attenuation for wireless communication. Experimentally, lower single sidebands (LSSBs) have been successfully demonstrated over a wide range of modulation frequency, f m = 150 MHz-1 GHz. The observed LSSBs are determined by the intrinsic properties of the device, which can be modeled well by a nonlinear frequency and amplitude modulation formulation and reproduced in macrospin simulations. Moreover, our macrospin simulation results show that the range of modulation current and modulation frequency for generating SSBs can be controlled by the field-like torque and biasing conditions.

Original language	English
Article number	13422
Journal	Scientific Reports
Volume	7
DOIs	https://doi.org/10.1038/s41598-017-13551-5
Publication status	Published - 18 Oct 2017
Externally published	Yes

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title = "A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator",

abstract = "An important property of spin-torque nano-oscillators (STNOs) is their ability to produce a frequency modulated (FM) signal, which is very critical for communication applications. We here demonstrate a novel single sideband (SSB) modulation phenomenon using a magnetic tunnel junction (MTJ)-based STNO, which saves transmission bandwidth and in principle should minimize attenuation for wireless communication. Experimentally, lower single sidebands (LSSBs) have been successfully demonstrated over a wide range of modulation frequency, f m = 150 MHz-1 GHz. The observed LSSBs are determined by the intrinsic properties of the device, which can be modeled well by a nonlinear frequency and amplitude modulation formulation and reproduced in macrospin simulations. Moreover, our macrospin simulation results show that the range of modulation current and modulation frequency for generating SSBs can be controlled by the field-like torque and biasing conditions.",

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doi = "10.1038/s41598-017-13551-5",

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T1 - A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator

AU - Sharma, Raghav

AU - Sisodia, Naveen

AU - Iacocca, Ezio

AU - Awad, Ahmad A.

AU - Åkerman, Johan

AU - Muduli, P. K.

PY - 2017/10/18

Y1 - 2017/10/18

N2 - An important property of spin-torque nano-oscillators (STNOs) is their ability to produce a frequency modulated (FM) signal, which is very critical for communication applications. We here demonstrate a novel single sideband (SSB) modulation phenomenon using a magnetic tunnel junction (MTJ)-based STNO, which saves transmission bandwidth and in principle should minimize attenuation for wireless communication. Experimentally, lower single sidebands (LSSBs) have been successfully demonstrated over a wide range of modulation frequency, f m = 150 MHz-1 GHz. The observed LSSBs are determined by the intrinsic properties of the device, which can be modeled well by a nonlinear frequency and amplitude modulation formulation and reproduced in macrospin simulations. Moreover, our macrospin simulation results show that the range of modulation current and modulation frequency for generating SSBs can be controlled by the field-like torque and biasing conditions.

AB - An important property of spin-torque nano-oscillators (STNOs) is their ability to produce a frequency modulated (FM) signal, which is very critical for communication applications. We here demonstrate a novel single sideband (SSB) modulation phenomenon using a magnetic tunnel junction (MTJ)-based STNO, which saves transmission bandwidth and in principle should minimize attenuation for wireless communication. Experimentally, lower single sidebands (LSSBs) have been successfully demonstrated over a wide range of modulation frequency, f m = 150 MHz-1 GHz. The observed LSSBs are determined by the intrinsic properties of the device, which can be modeled well by a nonlinear frequency and amplitude modulation formulation and reproduced in macrospin simulations. Moreover, our macrospin simulation results show that the range of modulation current and modulation frequency for generating SSBs can be controlled by the field-like torque and biasing conditions.

U2 - 10.1038/s41598-017-13551-5

DO - 10.1038/s41598-017-13551-5

M3 - Article

SN - 2045-2322

VL - 7

JO - Scientific Reports

JF - Scientific Reports

M1 - 13422

ER -

A high-speed single sideband generator using a magnetic tunnel junction spin torque nano-oscillator

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