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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, Sang-EuiKim, Han-JoonLee, Jae-HoOh, Kyoung-SubHahn, H. ThomasChoi, Ji-Woong
DGIST Authors
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/20.500.11750/5023
DOI
10.1016/j.matlet.2016.08.100
Publisher
Elsevier B.V.
Related Researcher
  • Author Choi, Ji Woong CSP(Communication and Signal Processing) Lab
  • Research Interests Communication System; Signal Processing; Communication Circuit Design; 생체 신호 통신 및 신호 처리; 뇌-기계 인터페이스(BMI); 차세대 교차계층 통신 및 신호 처리; 5G 모바일 통신
Files:
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Collection:
Department of Information and Communication EngineeringCSP(Communication and Signal Processing) Lab1. Journal Articles


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