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    • 64. 发明申请
    • Dielectric resonator, dielectric filter and method of producing the same, filter device combined to a transmit-receive antenna and communication apparatus using the same
    • 介质谐振器,介质滤波器及其制造方法,组合到发射 - 接收天线的滤波器装置和使用其的通信装置
    • US20050236103A1
    • 2005-10-27
    • US11148347
    • 2005-06-09
    • Yasuhiro SugayaTomoya MaekawaToru YamadaSeiichi Nakatani
    • Yasuhiro SugayaTomoya MaekawaToru YamadaSeiichi Nakatani
    • H01P1/203H01P11/00C09J5/00
    • H01P1/20345H01P11/007Y10T156/1052
    • A dielectric resonator includes a pair of dielectric substrates opposed to each other and resonator electrodes disposed between the pair of dielectric substrates. The resonator electrodes are disposed so as to be brought into contact with major surfaces of the pair of dielectric substrates, and a bonding layer is disposed around the resonator electrodes so as to bond the pair of dielectric substrates. The pair of dielectric substrates have been sintered in advance at sufficiently high temperature which is a dielectric having an fQ value at 1 GHz in the range of 3×103 to 1×105, and then achieve a high Q value as a filter. The pair of the substrates are provided with a surface roughness of a range of 0.1 to 2.0 μm, and flatness of 10 μm or less between both ends thereof to bring the resonant electrodes in close contact with the surfaces of the substrate. Such ceramic filters are used comfortably for a filter connecting a transmit-receive antenna to a transmitter and receiver, which can provide communication equipment having a good high frequency performance for cellular telephone systems.
    • 介质谐振器包括彼此相对的一对电介质基板和设置在该对电介质基板之间的谐振器电极。 谐振器电极设置成与一对电介质基板的主表面接触,并且在谐振器电极周围设置接合层,以便结合该对电介质基板。 预先将这对电介质基片预先烧成足够高的温度,该电介质具有3×10 3〜1×10 5范围内的1GHz的fQ值, 然后实现高Q值作为滤波器。 一对基板的两端之间的表面粗糙度为0.1〜2.0μm,平坦度为10μm以下,使谐振电极与基板的表面紧密接触。 这种陶瓷滤波器被舒适地用于将发射 - 接收天线连接到发射机和接收机的滤波器,其可以为蜂窝电话系统提供具有良好高频性能的通信设备。