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Title: Flexible Magnetic Polymer Composite Substrate with Ba1.5Sr1.5Z Hexaferrite Particles of VHF/Low UHF Patch Antennas for UAVs and Medical Implant Devices

Journal Article · · Materials
DOI:https://doi.org/10.3390/ma13041021· OSTI ID:1628418
 [1];  [1];  [2]; ORCiD logo [1];  [3];  [4]
  1. Inha Univ., Incheon (Korea). Dept. of Mechanical Engineering
  2. Smart Radar System, Gyeonggi-do (Korea)
  3. Inha Univ., Incheon (Korea). Dept. of Electronic Engineering
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate
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Our goal is to fabricate flexible magnetic polymer composites as antenna substrates for very high frequency (VHF)/low ultra high frequency (UHF) antennas for unmanned aerial vehicles (UAVs) and medical devices. Magnetodielectric materials, which have permeability (μ) similar to permittivity (ε), have attracted great attention, because they facilitate miniaturization of microwave devices while keeping or enhancing electromagnetic characteristics. Mechanically millled Ba1.5Sr1.5Co2Fe24O41 (Ba1.5Sr1.5Z) hexaferrite particles were used to increase permeability in the interesting frequency band. The microwave properties of Ba1.5Sr1.5Z composites were predicted and measured. Hansen’s zero-order analysis of antenna bandwidth and electromagnetic field simulation showed that the hexaferrite-based flexible composite could enhance a bandwidth and achieve the miniaturization of antennas as well. The magnetic antenna substrates can be a good solution to integrate antennas into the UAVs whose dimensions are comparable to or larger than communication wavelength.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1628418
Journal Information:
Materials, Vol. 13, Issue 4; ISSN 1996-1944
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (22)

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Figures / Tables (9)

Figure 1(p. 3)figure Figure 1
Figure 2(p. 3)figure Figure 2
Figure 3(p. 4)figure Figure 3
Figure 4(p. 5)figure Figure 4
Figure 5(p. 6)figure Figure 5
Figure 6(p. 6)figure Figure 6
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Table 1(p. 7)table Table 1
Table 2(p. 7)table Table 2

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Related Subjects

36 MATERIALS SCIENCE
materials science
antenna substrate
magnetodielectric composite
hexaferrite
VHF
UHF
UAV
MICS