发明名称 |
High frequency dielectric ceramic compact, dielectric resonator, dielectric filter, dielectric duplexer, and communication apparatus |
摘要 |
<p>A high-frequency dielectric ceramic compact is provided which has a relative dielectric constant ( epsilon r) of about 20 or less and a Q value of about 20,000 or more at 1 GHz, in which the temperature coefficient ( tau f) can be optionally controlled at about 0 (ppm/ DEG C). When the compact of the dielectric ceramic compact is represented by the formula aBaO.bMeO.cSbO3/2, 0.476 ≤ a ≤ 0.513, 0.160 ≤ b ≤ 0.175, and 0.324 ≤ c ≤ 0.350. In addition, when the compact of the dielectric ceramic compact is represented by the formula dBaO.eMeO.fSbO3/2.gTiO2, 0.476 ≤ d ≤ 0.513, 0.100 ≤ e ≤ 0.175, 0.200 ≤ f ≤ 0.349, and 0 < g ≤ 0.200.</p> |
申请公布号 |
EP1170269(A2) |
申请公布日期 |
2002.01.09 |
申请号 |
EP20010115498 |
申请日期 |
2001.06.27 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
KONO, MIZUKI;TATEKAWA, TSUTOMU;TAKAGI, HITOSHI |
分类号 |
C04B35/00;C04B35/46;C04B35/468;H01B3/12;H01P1/205;H01P1/213;H01P7/04;H01P7/10;(IPC1-7):C04B35/468;C04B35/01 |
主分类号 |
C04B35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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