Electronic tuning of magnetic permeability in Co2Z hexaferrite toward high frequency electromagnetic device miniaturization

2011 ◽  
Vol 98 (20) ◽  
pp. 202502 ◽  
Author(s):  
Yajie Chen ◽  
Andrew Daigle ◽  
Trifon Fitchorov ◽  
Bolin Hu ◽  
Michael Geiler ◽  
...  
Keyword(s):  
Magnetic Permeability ◽  
High Frequency ◽  
Electromagnetic Device ◽  
Electronic Tuning ◽  
Device Miniaturization

High-frequency magnetic permeability of single- and multilayered (Co41Fe39B20) x (SiO2)100–x nanocomposites

2016 ◽  
Vol 58 (12) ◽  
pp. 2453-2456 ◽  
Author(s):  
O. S. Tarasova ◽  
A. V. Sitnikov ◽  
Yu. E. Kalinin ◽  
S. N. Starostenko ◽  
A. B. Granovskii
Keyword(s):  
Magnetic Permeability ◽  
High Frequency

Quad Band Planar Inverted F Antenna for Smart Phone

2014 ◽  
Vol 573 ◽  
pp. 394-399
Author(s):  
R. Manikandan ◽  
P.K. Jawahar
Keyword(s):  
High Frequency ◽  
Smart Phone ◽  
Analysis And Design ◽  
High Frequency Structure Simulator ◽  
Low Profile ◽  
Resonance Frequencies ◽  
Theoretical Predictions ◽  
Communication Devices ◽  
Device Miniaturization ◽  
Good Agreement

In recent years, the demand for compact handheld communication devices has grown significantly. For device miniaturization antenna size is to be reduced. Micro strip and PIFA have been used for past few years. Since it has low profile geometry it can be embedded into devices. This project is to develop a Quad band small size Planar Inverted F Antenna (PIFA) for the operation in modern multi-band mobile transceiver system. Various techniques for analysis and design of such antenna investigated in this project. The design curve is used to design Quad band Planar inverted F Antenna to operate at the 900, 1800, 2100 and 3500 MHz bands. Since High Frequency Structure Simulator (HFSS) simulation result agrees well with the theoretical predictions, this project also designed through HFSS. An antenna designed at the four desired band and optimized to adjust the four resonance frequencies using HFSS simulation. The substrate FR4 (εr=4.4 & tanδ = 0.02) are in good agreement with the simulation result. Further bandwidth enhancements by making defects in the substrate at particular area were need of much reflection.

Increasing the high-frequency magnetic permeability of MnZn ferrite in polyaniline composites by incorporating silver

2013 ◽  
Vol 333 ◽  
pp. 30-38 ◽  
Author(s):  
V. Babayan ◽  
N.E. Kazantseva ◽  
I. Sapurina ◽  
R. Moučka ◽  
J. Stejskal ◽  
...  
Keyword(s):  
Magnetic Permeability ◽  
High Frequency ◽  
Mnzn Ferrite ◽  
Polyaniline Composites

scholarly journals High-frequency magnetic permeability of nanocomposite film

2005 ◽  
Vol 293 (3) ◽  
pp. 938-946 ◽  
Author(s):  
N.A. Buznikov ◽  
I.T. Iakubov ◽  
A.L. Rakhmanov ◽  
A.O. Sboychakov
Keyword(s):  
Magnetic Permeability ◽  
High Frequency ◽  
Nanocomposite Film

Studies of high-frequency magnetic permeability of rod-shaped CrO2nanoparticles

2007 ◽  
Vol 204 (3) ◽  
pp. 755-762 ◽  
Author(s):  
L. Z. Wu ◽  
J. Ding ◽  
C. P. Neo ◽  
L. F. Chen ◽  
C. K. Ong
Keyword(s):  
Magnetic Permeability ◽  
High Frequency

scholarly journals Magnetic Flow Scattering in Ferrite Rings

2019 ◽  
Vol 5 (01) ◽  
Author(s):  
Andrew Chubykalo ◽  
Augusto Espinoza ◽  
Viktor Kuligin
Keyword(s):  
Magnetic Flux ◽  
Magnetic Permeability ◽  
High Frequency ◽  
Experimental Measurements ◽  
Magnetic Flow ◽  
High Magnetic Permeability

It is shown that, contrary to the prevailing opinion, the scattering of the magnetic flux, even in ferrites with high magnetic permeability, is very large. A description of the technique for measuring the parameters of ferrites and inductors on ferrite rings is given. The results of experimental measurements of parameters for various grades of ferrites and various values of magnetic permeability are presented. Recommendations on the design of high-frequency transformers and inductors on ferrite rings are given.

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