TY - JOUR
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
N1 - Funding Information:
This work is supported by the University Research fund under Grant code: DIP-2014-029 and Information and Communication Technology Division, Ministry of Posts, Telecommunication and Information Technology, Dhaka, Bangladesh.
Publisher Copyright:
© 2015, Springer Science+Business Media New York.
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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U2 - 10.1007/s10971-015-3677-5
DO - 10.1007/s10971-015-3677-5
M3 - Article
AN - SCOPUS:84939959141
VL - 74
SP - 557
EP - 565
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
SN - 0928-0707
IS - 2
ER -