Characterization and dielectric properties of novel dielectric ceramics Ca<inf>x</inf>Zn<inf>(1-x)</inf>Al<inf>2</inf>O<inf>4</inf> for GPS patch antennas

Wan Nasarudin Wan Jalal, Huda Abdullah, Mohd Syafiq Zulfakar, Sahbudin Shaari, Mohammad Tariqul Islam

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A solgel method was used to prepare Ca<inf>x</inf>Zn<inf>(1-x)</inf>Al<inf>2</inf>O<inf>4</inf> thin films and fabricate GPS patch antennas. The addition of calcium (Ca) has increased the ε<inf>r</inf>, crystallite size, and grain size, to increase the ceramics density. The three highest Q × f values appear at the position of x = 0.05 (31,091 MHz), 0.15 (63,906 MHz), and 0.25 (40,609 MHz), respectively. The best combination of microwave dielectric properties (ε<inf>r</inf> ~ 9.02), Q × f ~ 63,906 MHz and with the lowest return lost (-25 dB) is obtained for specimen using Ca<inf>0.15</inf>Zn<inf>0.85</inf>Al<inf>2</inf>O<inf>4</inf> (x = 0.15) ceramics, which is the suggested material for GPS patch antennas.

Original languageEnglish
Pages (from-to)E32-E42
JournalInternational Journal of Applied Ceramic Technology
Volume12
Issue numberS1
DOIs
Publication statusPublished - 1 Jan 2015

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patch antennas
Microstrip antennas
Dielectric properties
Global positioning system
dielectric properties
ceramics
Crystallite size
Q factors
calcium
Calcium
grain size
Microwaves
microwaves
Thin films
thin films
Microwave

ASJC Scopus subject areas

  • Ceramics and Composites
  • Marketing
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Characterization and dielectric properties of novel dielectric ceramics Ca<inf>x</inf>Zn<inf>(1-x)</inf>Al<inf>2</inf>O<inf>4</inf> for GPS patch antennas. / Wan Jalal, Wan Nasarudin; Abdullah, Huda; Zulfakar, Mohd Syafiq; Shaari, Sahbudin; Islam, Mohammad Tariqul.

In: International Journal of Applied Ceramic Technology, Vol. 12, No. S1, 01.01.2015, p. E32-E42.

Research output: Contribution to journalArticle

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AU - Shaari, Sahbudin

AU - Islam, Mohammad Tariqul

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