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Microwave Materials with High Q and Low Dielectric Constant for Wireless Communications.

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Abstract

Microwave dielectrics with high Q and low εr are expected for millimeterwave applications. In this paper the preparation and properties of some candidates for microwave dielectrics such as forsterite, willemite, alumina, corundum-type compounds, green phase of Y2BaCuO5 are presented. High purity forsterite has low εr of 7.0 high Q·f of 270000 GHz and τf of −65ppm/°C. Willemite also has low εr of 6.5, and high Q·f of 160000 GHz. Alumina has ultra high Q·f of 680000GHz with εr of 10.05, and τf of −60 ppm/°C. Mg4(Nb2-xTax)O9 which belongs to corundum group has εr of 11.5, Q·f of 350000 GHz, and τf of −70ppm/°C. Y2Ba(Cu1/4Zn3/4)O5 which belongs to green phase group has εr of 15.4, Q·f of 220000 GHz. The τf’s of these materials, which are an important property for millimeterwave applications, have been adjusted to zero ppm/°C by the addition of rutile, or adjustment of solid solution composition.

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References

  1. H. Ohsato, Bulletin of the Ceramics Society of Japan, 39 (8), 578 (2004) (In Japanese.)

    CAS  Google Scholar 

  2. W. Mueller, “A Brief Overview of FBAR Technology” Agilent Technologies, http://www.agilent.com/about/newsroom/features/2002jul29 fbar.pdf

  3. R. C. Buchanan, Ceramic Materials for Electronics, Marcel Dekker, Inc., New York and Basel, pp. 1–8 (1986).

    Google Scholar 

  4. M. Andou, T. Tsunooka, Y. Higashida, H. Sugiura, and H. Ohsato, Abstracts for Microwave Materials and Their Applications, pp141, 1–3 Sept. 2002 York, UK.

    Google Scholar 

  5. Y. Guo, H. Ohsato, and K. Kakimoto, J. Eur. Ceram. Soc., 2005 (Accepted).

    Google Scholar 

  6. N. M. Alford and S. J. Penn, J. Appl. Phys., 80 (10) 5895 (1996).

    Article  CAS  Google Scholar 

  7. S. J. Penn, N. M. Alford, A. Templeton, X. Wang, M. Xu, M. Reece and K. Schrapel, J. Am. Ceram. Soc., 80 (7) 1885 (1997).

    Article  CAS  Google Scholar 

  8. H. Ogawa, A. Kan, S. Ishihara and Y. Higashida, J the Euro. Ceram. Soc., 23 (14), 2485(2003)

    Article  CAS  Google Scholar 

  9. H. Ogawa, A. Kan, S. Ishihara and Y. Higashida, J. Euro. Ceram. Soc., 21, 1731 (2003).

    Article  Google Scholar 

  10. B. W. Hakki and P. D. Coleman, IRE Trans. Microwave Theory & Tech., MTT-8, 402 (1960).

    Article  Google Scholar 

  11. Y. Kobayasi, and M. Kato, IEEE Trans.Microwave Theory & Tech., MTT-33, 586 (1985).

    Article  Google Scholar 

  12. H. Ohsato, T. Tsunooka, M. Andou, Y. Ohishi, Y. Miyauchi, and K. Kakimoto, J. Korean Ceram. Soc., 40, 350 (2003).

    Article  CAS  Google Scholar 

  13. H. Ohsato, H. Kato, M. Mizuta, S. Nishigaki and T. Okuda, Jpn. J. Appl. Phys., 34 5413 (1995).

    Article  CAS  Google Scholar 

  14. T. Tsunooka, M. Andou, Y. Higashida, H. Sugiura, and H. Ohsato, J. Eur. Ceram. Soc., 23(14), 2573 (2003)

    Article  CAS  Google Scholar 

  15. Y. Ohishi, Y. Miyauchi, H. Ohsato and K. Kakimoto, Jpn. J. Appl. Phys., 43, 6A, 749(2004).

    Article  Google Scholar 

  16. A. Kan, Dr. Thesis, Meijyo-University, 2004

Download references

Acknowlegements

The authors would like to thank Professor H. Ogawa and Dr. A. Kan in Meijyo-University, Professor K. Kakimoto, Dr. M. Sebastian, Dr. Y. Guo, Mr. S. Tsunooka, Mr. T. Sugiyama in Nagoya Institute of Technology, and Mr. T. Miyauchi in TDK co. ltd., M. Ando in Japan Fine Ceramics Center (JFCC) for collaborations on this study. The authors also would like to thank Mr. A. Harada, President of Daiken Chemical Co., Ltd., Mr. I. Suzuki, President of Marusu Graze & Co., Lid., and Mr. T. Yasufuku, President of Co., Ltd., Yasufuku-Ceramics for foundation of this study. A part of this study was supported by following projects: The NITECH 21st Century COE (Center of Excellence) program “World Ceramics Center for Environmental Harmony” supported by Japanese Ministry of Education, Science and Culture, and “NIT-Seto Ceramics R & D Project” supported by Japanese Ministry of Education, Science and Culture.

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  1. Materials Science and Engineering, Shikumi-College, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan

    Hitoshi Ohsalo

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  1. Hitoshi Ohsalo
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Ohsalo, H. Microwave Materials with High Q and Low Dielectric Constant for Wireless Communications.. MRS Online Proceedings Library 833, 1–8 (2004). https://doi.org/10.1557/PROC-833-G2.4

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  • DOI: https://doi.org/10.1557/PROC-833-G2.4

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