Synthesis and characterization of gahnite-based microwave dielectric ceramics (MDC) for microstrip antennas prepared by a sol–gel method

Ashiqur Rahman, Mohammad Tariqul Islam, Mohd Syafiq Zulfakar, Huda Abdullah

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5 Citations (Scopus)

Abstract

Abstract: Gahnite (zinc aluminate) nanoparticle powder is synthesized by a sol–gel method and used to fabricate a microstrip antenna. X-ray diffraction analysis indicates the formation of a face-centered cubic gahnite structure with an average crystallite size of 19.92 nm. The surface morphology of the gahnite is analyzed with field-emission scanning electron microscopy. The presence of water molecules and nitrates within the material is confirmed by Fourier transform infrared analysis. The measured dielectric constant, bandgap and unloaded quality factor of the synthesized powder are 8.70, 4.08 eV and 4592, respectively. The performance of the microstrip antenna is evaluated using return loss, (S11) parameter analysis. The measured impedance bandwidth is 760 MHz in the low-frequency band and 8.1 GHz in the high-frequency band. The overall performance demonstrates that the fabricated ceramic is suitable for application in a microstrip antenna.

Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)557-565
Number of pages9
JournalJournal of Sol-Gel Science and Technology
Volume74
Issue number2
DOIs
Publication statusPublished - 1 May 2015

Fingerprint

microstrip antennas
Microstrip antennas
Microwaves
ceramics
microwaves
Powders
Frequency bands
synthesis
Crystallite size
Field emission
Nitrates
X ray diffraction analysis
Surface morphology
nitrates
Zinc
Q factors
field emission
Fourier transforms
Energy gap
Permittivity

Keywords

  • Gahnite
  • Microstrip antenna
  • Microwave dielectric ceramics
  • Sol–gel

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Biomaterials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

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title = "Synthesis and characterization of gahnite-based microwave dielectric ceramics (MDC) for microstrip antennas prepared by a sol–gel method",
abstract = "Abstract: Gahnite (zinc aluminate) nanoparticle powder is synthesized by a sol–gel method and used to fabricate a microstrip antenna. X-ray diffraction analysis indicates the formation of a face-centered cubic gahnite structure with an average crystallite size of 19.92 nm. The surface morphology of the gahnite is analyzed with field-emission scanning electron microscopy. The presence of water molecules and nitrates within the material is confirmed by Fourier transform infrared analysis. The measured dielectric constant, bandgap and unloaded quality factor of the synthesized powder are 8.70, 4.08 eV and 4592, respectively. The performance of the microstrip antenna is evaluated using return loss, (S11) parameter analysis. The measured impedance bandwidth is 760 MHz in the low-frequency band and 8.1 GHz in the high-frequency band. The overall performance demonstrates that the fabricated ceramic is suitable for application in a microstrip antenna.Graphical Abstract: [Figure not available: see fulltext.]",
keywords = "Gahnite, Microstrip antenna, Microwave dielectric ceramics, Sol–gel",
author = "Ashiqur Rahman and Islam, {Mohammad Tariqul} and Zulfakar, {Mohd Syafiq} and Huda Abdullah",
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T1 - Synthesis and characterization of gahnite-based microwave dielectric ceramics (MDC) for microstrip antennas prepared by a sol–gel method

AU - Rahman, Ashiqur

AU - Islam, Mohammad Tariqul

AU - Zulfakar, Mohd Syafiq

AU - Abdullah, Huda

PY - 2015/5/1

Y1 - 2015/5/1

N2 - Abstract: Gahnite (zinc aluminate) nanoparticle powder is synthesized by a sol–gel method and used to fabricate a microstrip antenna. X-ray diffraction analysis indicates the formation of a face-centered cubic gahnite structure with an average crystallite size of 19.92 nm. The surface morphology of the gahnite is analyzed with field-emission scanning electron microscopy. The presence of water molecules and nitrates within the material is confirmed by Fourier transform infrared analysis. The measured dielectric constant, bandgap and unloaded quality factor of the synthesized powder are 8.70, 4.08 eV and 4592, respectively. The performance of the microstrip antenna is evaluated using return loss, (S11) parameter analysis. The measured impedance bandwidth is 760 MHz in the low-frequency band and 8.1 GHz in the high-frequency band. The overall performance demonstrates that the fabricated ceramic is suitable for application in a microstrip antenna.Graphical Abstract: [Figure not available: see fulltext.]

AB - Abstract: Gahnite (zinc aluminate) nanoparticle powder is synthesized by a sol–gel method and used to fabricate a microstrip antenna. X-ray diffraction analysis indicates the formation of a face-centered cubic gahnite structure with an average crystallite size of 19.92 nm. The surface morphology of the gahnite is analyzed with field-emission scanning electron microscopy. The presence of water molecules and nitrates within the material is confirmed by Fourier transform infrared analysis. The measured dielectric constant, bandgap and unloaded quality factor of the synthesized powder are 8.70, 4.08 eV and 4592, respectively. The performance of the microstrip antenna is evaluated using return loss, (S11) parameter analysis. The measured impedance bandwidth is 760 MHz in the low-frequency band and 8.1 GHz in the high-frequency band. The overall performance demonstrates that the fabricated ceramic is suitable for application in a microstrip antenna.Graphical Abstract: [Figure not available: see fulltext.]

KW - Gahnite

KW - Microstrip antenna

KW - Microwave dielectric ceramics

KW - Sol–gel

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