Recent development of dielectric resonator materials and filters in Japan

Abstract Since 1970s, many kinds of dielectric resonator materials with improved Q values and improved temperature coefficients have been developed. Representative of them are the systems, (Ba, Sr, Ca)(Zr, Ti)O3, MgTiO3-CaTiO3-La2O3 · TiO2, Ba2Ti9O20, (Zr, Sn)TiO4, (Sr, Ca)[(Li, Nb),Ti]O3, and BaO-Nd2O3-TiO2. In the past 15 years, the Q values of these materials have gradually been improved. Using these new materials, dielectric resonator filters and oscillators are being developed which are more compact and applicable to high power operation. Their main applications are cellular mobile radio systems and SHF-TV systems using direct broadcasting satellite. This paper will present the recent development in Japan of resonator materials and filters.

[1]  R. C. Kell,et al.  High‐Permittivity Temperature‐Stable Ceramic Dielectrics with Low Microwave Loss , 1973 .

[2]  B. W. Hakki,et al.  A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range , 1960 .

[3]  K. Wakino,et al.  High Frequency Dielectrics and Their Applications , 1986, Sixth IEEE International Symposium on Applications of Ferroelectrics.

[4]  K. Wakino,et al.  Quarter Wave Dielectric Transmission Line Diplexer for Land Mobile Communications , 1979, 1979 IEEE MTT-S International Microwave Symposium Digest.

[5]  I. Ueda,et al.  Ba(Zn1/3Ta2/3)O3 Ceramics with Low Dielectric Loss at Microwave Frequencies , 1983 .

[6]  S. Nomura,et al.  Ba(Mg1/3Ta2/3)O3 Ceramics with Temperature-Stable High Dielectric Constant and Low Microwave Loss , 1982 .

[7]  R. C. Miller,et al.  Far Infrared Dielectric Dispersion in BaTiO3, SrTiO3, and TiO2 , 1962 .

[8]  R. O. Bell,et al.  NONLINEARITY AND MICROWAVE LOSSES IN CUBIC STRONTIUM-TITANATE , 1961 .

[9]  K. Wakino,et al.  Miniaturized Diplexer for Land Mobile Communication Using High Dielectric Ceramics , 1981, 1981 IEEE MTT-S International Microwave Symposium Digest.

[10]  K. Wakino,et al.  Dielectric High-Power Bandpass Filter Using Quarter-Cut TE/sub 01delta/ Image Resonator for Cellular Base Stations , 1987, 1987 IEEE MTT-S International Microwave Symposium Digest.

[11]  T. Nishikawa,et al.  Miniaturized Band Pass Filters Using Half Wave Dielectric Resonators with Improved Spurious Response , 1978, 1978 IEEE-MTT-S International Microwave Symposium Digest.

[12]  Y. Ishikawa,et al.  16 channel dielectric transmitter multiplexer for cellular base stations , 1988, 38th IEEE Vehicular Technology Conference.

[13]  H. Tamura,et al.  Lattice Vibrations of Ba(Zn1/3Ta2/3)O3 Crystal with Ordered Perovskite Structure , 1986 .

[14]  Kikuo Wakino,et al.  Far Infrared Reflection Spectra of Ba(ZnTa)O3–BaZrO3 Dielectric Resonator Material , 1985 .

[15]  Y. Kobayashi,et al.  Microwave Measurement of Dielectric Properties of Low-Loss Materials by the Dielectric Rod Resonator Method , 1985 .

[16]  J. Plourde,et al.  A New BaO-TiO2 Compound with Temperature-Stable High Permittivity and Low Microwave Loss , 1974 .

[17]  H. Göbel,et al.  Existence range, structural and dielectric properties of ZrxTiySnzO4 ceramics (x+y+z=2) , 1981 .

[18]  S. Cohn.  Microwave Bandpass Filters Containing High-Q Dielectric Resonators , 1968 .

[19]  D. Kajfex,et al.  Dielectric Resonators , 1986 .

[20]  R. C. Miller,et al.  Far Infrared Dielectric Dispersion in KTaO3 , 1963 .

[21]  Yoshio Kobayashi,et al.  Canonical Bandpass Filters Using Dual-Mode Dielectric Resonators , 1987, 1987 IEEE MTT-S International Microwave Symposium Digest.

[22]  K. Wakino,et al.  Microwave Bandpass Filters Containing Dielectric Resonators with Improved Temperature Stability and Spurious Response , 1975 .

[23]  S. Nishigaki,et al.  BaO‐TiO2‐WO3 Microwave Ceramics and Crystalline BaWO4 , 1988 .