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Modulation Rate Study in a Spin-Torque Oscillator-Based Wireless Communication System

Journal article
Authors R. Sharma
Philipp Dürrenfeld
Mojtaba Ranjbar
Randy K. Dumas
Johan Åkerman
Pranaba Muduli Kishor
Published in Ieee Transactions on Magnetics
Volume 51
Issue 11
Pages Article nr. 1401304
ISSN 0018-9464
Publication year 2015
Published at Department of Physics (GU)
Pages Article nr. 1401304
Language en
Keywords Amplitude-shift keying (ASK), modulation rate, spin-torque oscillators, wireless communication, spintronics, memory, Engineering, Physics
Subject categories Physical Sciences


We study a wireless communication system based on a magnetic tunnel junction spin-torque nano-oscillator (STNO) by employing amplitude-shift-keying modulation. By varying the pulse modulation frequency (f(m)) from 1 kHz to 2 MHz and distance (D) between the antenna from 25 to 150 cm, we show a maximum data rate of 6 Mb/s (at D = 25 cm and fm = 1 MHz), a limit imposed by our setup and noise generated by the STNO itself. We also report the average amplitude noise (S-delta a) and average white frequency noise (S-wh) of the wireless communication system and discuss their dependence on the distance between the antennas.

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