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

Author

Sharma, R. ; Durrenfeld, P. ; Ranjbar, M. ; Dumas, R.K. ; Akerman, J. ; Muduli, P.K.

Author_Institution

Dept. of Phys., IIT Delhi, Delhi, India

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

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 f_m = 1 MHz), a limit imposed by our setup and noise generated by the STNO itself. We also report the average amplitude noise (S_δa) and average white frequency noise (S_wh) of the wireless communication system and discuss their dependence on the distance between the antennas.

Keywords

amplitude shift keying; antennas; magnetic tunnelling; nanoelectronics; oscillators; pulse modulation; radiocommunication; amplitude-shift-keying modulation; antenna; average amplitude noise; average white frequency noise; bit rate 6 Mbit/s; distance 25 cm to 150 cm; frequency 1 kHz to 2 MHz; magnetic tunnel junction spin-torque nano-oscillator; pulse modulation frequency; spin-torque oscillator; wireless communication system; Frequency modulation; Oscillators; Signal to noise ratio; Torque; Wireless communication; Amplitude-shift keying (ASK); amplitude shift keying; modulation rate; spin torque oscillators; spin-torque oscillators; wireless communication;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2438033

Filename

7113844