| Title |
Microwave dielectric properties of the BSST ceramics with BaO compositional ratio |
| Keywords |
마이크로파 유전체 공진기 ; 유전상수 ; 품질계수 ; 공진 주파수의 온도계수 Microwave dielectric resonator ; Dielectric constant ; Quality factor ; Temperature coefficient of resonant frequency |
| Abstract |
Microwave dielectric properties of 0.15(B a_{x}S r_{0.05})O-0.15(S m_{2}(1-y)N d_{2y}) O_{3}-0.7Ti o_{2}(x=o.9~0.1[mol.], y=6[m/o]) ceramics were investigated with BaO compositional ratio. Sintered density and resistivity of specimens were independent on the BaO compositional ratio. In the specimen with x=0.975[mol.], dielectric constant, quality factor and temperature coefficient of resonant frequency had good values of 76.52, 3001(at 3[GHz]) and +0.71[ppm/.ceg. C], respectively. By comparing with the stoichiometric compositions of 78.14, 2938(at 3[GHz])+14.19[ppm/.ceg. C], dielectric constant and quality factor showed similar properties, but the temperature coefficient of resonant frequency was highly improved. (author). refs., figs., tabs.s.s. |