A novel low-loss microwave dielectric using (Ca0.8Sr0.2)TiO3-modified (Mg0.95Co0.05)2TiO4 ceramics

Jhih Yong Chen, Cheng-Liang Huang

Research output: Contribution to journalLetter

3 Citations (Scopus)

Abstract

The microwave dielectric properties of conventional solid-state route prepared (1 - x)(Mg0.95Co0.05)2TiO4-x(Ca0.8Sr0.2)TiO3 ceramic system have been investigated. A two-phase system was confirmed by the X-ray diffraction patterns. (Mg0.95Co0.05)TiO3 was also detected as a second phase in the system. The microwave dielectric properties are strongly related to the density and the morphology of the specimens. The presence of the second phase, however, would cause no significant variation in the dielectric properties of the specimen because it possesses similar properties compared to that of the main phase (Mg0.95Co0.05)2TiO4. Specimen using 0.92(Mg0.95Co0.05)2TiO4-0.08(Ca0.8Sr0.2)TiO3 leads to a good combination of microwave dielectric properties with an εr of 19.22, a Q × f of 123,200 GHz (at 9.2 GHz) and a τf value of 2.8 ppm/°C. It is proposed as a candidate dielectric for applications in GPS patch antennas and 3G passive components.

Original languageEnglish
JournalJournal of Alloys and Compounds
Volume496
Issue number1-2
DOIs
Publication statusPublished - 2010 Apr 30

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Dielectric properties
Microwaves
Dielectric properties of solids
Microstrip antennas
Diffraction patterns
Global positioning system
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "A novel low-loss microwave dielectric using (Ca0.8Sr0.2)TiO3-modified (Mg0.95Co0.05)2TiO4 ceramics",
abstract = "The microwave dielectric properties of conventional solid-state route prepared (1 - x)(Mg0.95Co0.05)2TiO4-x(Ca0.8Sr0.2)TiO3 ceramic system have been investigated. A two-phase system was confirmed by the X-ray diffraction patterns. (Mg0.95Co0.05)TiO3 was also detected as a second phase in the system. The microwave dielectric properties are strongly related to the density and the morphology of the specimens. The presence of the second phase, however, would cause no significant variation in the dielectric properties of the specimen because it possesses similar properties compared to that of the main phase (Mg0.95Co0.05)2TiO4. Specimen using 0.92(Mg0.95Co0.05)2TiO4-0.08(Ca0.8Sr0.2)TiO3 leads to a good combination of microwave dielectric properties with an εr of 19.22, a Q × f of 123,200 GHz (at 9.2 GHz) and a τf value of 2.8 ppm/°C. It is proposed as a candidate dielectric for applications in GPS patch antennas and 3G passive components.",
author = "Chen, {Jhih Yong} and Cheng-Liang Huang",
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A novel low-loss microwave dielectric using (Ca0.8Sr0.2)TiO3-modified (Mg0.95Co0.05)2TiO4 ceramics. / Chen, Jhih Yong; Huang, Cheng-Liang.

In: Journal of Alloys and Compounds, Vol. 496, No. 1-2, 30.04.2010.

Research output: Contribution to journalLetter

TY - JOUR

T1 - A novel low-loss microwave dielectric using (Ca0.8Sr0.2)TiO3-modified (Mg0.95Co0.05)2TiO4 ceramics

AU - Chen, Jhih Yong

AU - Huang, Cheng-Liang

PY - 2010/4/30

Y1 - 2010/4/30

N2 - The microwave dielectric properties of conventional solid-state route prepared (1 - x)(Mg0.95Co0.05)2TiO4-x(Ca0.8Sr0.2)TiO3 ceramic system have been investigated. A two-phase system was confirmed by the X-ray diffraction patterns. (Mg0.95Co0.05)TiO3 was also detected as a second phase in the system. The microwave dielectric properties are strongly related to the density and the morphology of the specimens. The presence of the second phase, however, would cause no significant variation in the dielectric properties of the specimen because it possesses similar properties compared to that of the main phase (Mg0.95Co0.05)2TiO4. Specimen using 0.92(Mg0.95Co0.05)2TiO4-0.08(Ca0.8Sr0.2)TiO3 leads to a good combination of microwave dielectric properties with an εr of 19.22, a Q × f of 123,200 GHz (at 9.2 GHz) and a τf value of 2.8 ppm/°C. It is proposed as a candidate dielectric for applications in GPS patch antennas and 3G passive components.

AB - The microwave dielectric properties of conventional solid-state route prepared (1 - x)(Mg0.95Co0.05)2TiO4-x(Ca0.8Sr0.2)TiO3 ceramic system have been investigated. A two-phase system was confirmed by the X-ray diffraction patterns. (Mg0.95Co0.05)TiO3 was also detected as a second phase in the system. The microwave dielectric properties are strongly related to the density and the morphology of the specimens. The presence of the second phase, however, would cause no significant variation in the dielectric properties of the specimen because it possesses similar properties compared to that of the main phase (Mg0.95Co0.05)2TiO4. Specimen using 0.92(Mg0.95Co0.05)2TiO4-0.08(Ca0.8Sr0.2)TiO3 leads to a good combination of microwave dielectric properties with an εr of 19.22, a Q × f of 123,200 GHz (at 9.2 GHz) and a τf value of 2.8 ppm/°C. It is proposed as a candidate dielectric for applications in GPS patch antennas and 3G passive components.

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