Title :
Preparation and Application on Antenna of Soft Ferrite Core for Wireless Sensor Networks
Author :
Li, L. ; Fang, Y.K. ; Liu, Y.J.
Author_Institution :
State Key Lab. of Networking & Switching Technol., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, soft magnetic Mn-Zn ferrite samples have been prepared through oxide processes. The magnetic properties and the phase structures were investigated. It was found that the optimal sintering temperature is about 1360 °C. The initial permeability of the samples is 1700-2300, Curie temperature Tc is about 140 °C-180 °C, and cutoff frequency fr is about 1 MHz. Moreover, the initial permeability of the samples is relatively stable, and its temperature coefficient is ~10-6/°C at the temperature range of 20 °C-60 °C. High-frequency simulation results show that the Mn-Zn ferrites samples are suitable for the application of the wireless sensor networks in theory.
Keywords :
Curie temperature; ferrites; magnetic cores; magnetic permeability; manganese alloys; sintering; soft magnetic materials; wireless sensor networks; zinc alloys; Curie temperature; Mn-Zn; frequency 1 MHz; high-frequency simulation; optimal sintering temperatur; oxide process; permeability; phase structure; soft ferrite core antenna; soft magnetic Mn-Zn ferrite samples; temperature 140 degC to 180 degC; temperature 20 degC to 60 degC; temperature coefficient; wireless sensor network; Antennas; Ferrites; Permeability; Soft magnetic materials; Temperature; Temperature measurement; Wireless sensor networks; HFSS; High-frequency structural simulator (HFSS); Mn-Zn soft ferrites; Mn???Zn soft ferrites; permeability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2450220
