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Magnetodielectric hexaferrite flake/polymer substrate for implantable antenna with an enhanced insensitivity to implant position

Title
Magnetodielectric hexaferrite flake/polymer substrate for implantable antenna with an enhanced insensitivity to implant position
Authors
Lee, SE[Lee, Sang-Eui]Kim, HJ[Kim, Han-Joon]Lee, JH[Lee, Jae-Ho]Oh, KS[Oh, Kyoung-Sub]Hahn, HT[Hahn, H. Thomas]Choi, JW[Choi, Ji-Woong]
DGIST Authors
Kim, HJ[Kim, Han-Joon]; Choi, JW[Choi, Ji-Woong]
Issue Date
2017-01-15
Citation
Materials Letters, 187, 94-97
Type
Article
Article Type
Article
Keywords
Antenna SubstrateAntenna SubstratesAntennasBandwidthCarbon DioxideDielectric MaterialsDielectric SubstratesFerriteHexa-FerriteHexa-FerritesImplantable AntennasImplantable Medical AntennaMagnetodielectricMagnetodielectricsMedical Implant Communication ServicesMICS BandMolten Salt MethodSpiral Antennas
ISSN
0167-577X
Abstract
A magnetodielectric substrate is firstly proposed for implantable antennas in medical implant communication service (MICS) band. Ba3Co2Fe24O41 (Co2Z), Z-type hexaferrite flakes synthesized by molten-salt method were incorporated with a polymer matrix, having a real permeability of 2.88 and a magnetic loss of 0.029 at 402 MHz. A spiral antenna with the magnetodielectric substrate has a bandwidth 70% and 50% broader than that with a commercial dielectric substrate, Rogers 3210, in a 2/3-phantom model and a multi-layered body model, respectively. The band broadening retains the bandwidth to be overlapped after implant positions change, leading to an enhancement in insensitivity to the implant position. © 2016 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/2049
DOI
10.1016/j.matlet.2016.08.100
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Information and Communication EngineeringCSP(Communication and Signal Processing) Lab1. Journal Articles


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