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    • 4. 发明授权
    • Method of manufacturing a ceramic electronic component
    • 制造陶瓷电子部件的方法
    • US5769988A
    • 1998-06-23
    • US752837
    • 1996-11-20
    • Hiroshi KagataIchiro KameyamaTatsuya InoueJunichi Kato
    • Hiroshi KagataIchiro KameyamaTatsuya InoueJunichi Kato
    • C04B35/00C04B35/64C04B41/51C04B41/88H01G4/12H01P7/04H01P11/00C04B37/00B05D5/12
    • C04B41/009C04B41/5116C04B41/88H01P11/008C04B2111/00844
    • A method of manufacturing a ceramic electronic component having a dielectric ceramic and a conductor containing Ag as a main component, wherein a dielectric resonator with a high Q value is produced by heat treating at 400.degree. C. or more in an atmosphere containing 10% or less by volume of oxygen after sintering the dielectric ceramic. Using a BaO--TiO.sub.2 --Nd.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 based composition (.epsilon..sub.r =92, Qf=5000 GHz) as a dielectric, a coaxial type dielectric ceramic is produced by granulating calcined powder of the dielectric and then compacting the powder, followed by sintering. A dielectric resonator of .lambda./4 is produced by coating the dielectric ceramic with Ag paste at a position other than either the upper or lower side and then burning the paste. Thereafter, the electrodes(1,4) are formed by burning the paste at 400.degree. C. or more in an atmosphere containing 10% or less by volume of oxygen. The coaxial type dielectric resonator accepts electromagnetic waves from the open end and obtains output by utilizing TEM mode.
    • 一种制造具有介电陶瓷和含有Ag作为主要成分的导体的陶瓷电子部件的制造方法,其特征在于,在含有10%以上的气氛中,在400℃以上的温度下进行热处理, 烧结介电陶瓷后的氧气体积小。 使用BaO-TiO2-Nd2O3-Bi2O3基组合物(ε= r = 92,Qf = 5000GHz)作为电介质,通过对电介质的煅烧粉末进行造粒,然后压实粉末,随后烧结来制造同轴型电介质陶瓷。 通过在不同于上侧或下侧的位置用Ag浆料涂覆电介质陶瓷,然后燃烧该糊料来制造λ/ 4的介质谐振器。 此后,通过在含有10体积%以下氧气的气氛中,在400℃以上的温度下将糊状物烧成而形成电极(1,4)。 同轴型介质谐振器从开口端接受电磁波,并利用TEM模式获得输出。
    • 8. 发明授权
    • SAW antenna duplexer having a phase shifter with less than 50 ohm characteristic impedance
    • SAW天线双工器具有具有小于50欧姆特性阻抗的移相器
    • US06714098B2
    • 2004-03-30
    • US09914263
    • 2001-10-19
    • Kazushi NishidaKatsuya FujiiIchiro KameyamaToru SakuragawaHiroshi Fujinaka
    • Kazushi NishidaKatsuya FujiiIchiro KameyamaToru SakuragawaHiroshi Fujinaka
    • H03H972
    • H04B1/52H03H9/0576H03H9/72H03H9/725
    • An antenna duplexer capable of optimally decreasing the insertion loss and the voltage standing wave ratio (VSWR) at a center frequency and its vicinity in the pass band in transmitter-band of the device. The output port of transmitter surface-acoustic-wave (SAW) filter (11) is electrically connected with phase shift circuit (13), to which receiver SAW filter (12) is also electrically connected. The transmitter and receiver SAW filters have different pass bands and attenuate the other pass band with each other. Phase shift circuit (13) shifts the phase of receiver SAW filter (12) in the transmitter-band. In addition, phase shift circuit (13) has the characteristic impedance in which the magnitude of the reflection coefficient at the center frequency in the transmitter-band of receiver SAW filter (12) is to be not less than 0.8 and the phase angle of reflection coefficient at the center frequency in the transmitter-band of receiver SAW filter (12) takes the range from 0° to 45°.
    • 一种天线双工器,其能够最佳地降低设备的发射机频带中的中心频率及其附近的插入损耗和电压驻波比(VSWR)。 发射器表面声波(SAW)滤波器(11)的输出端口与相移电路(13)电连接,接收器SAW滤波器(12)也电连接到该相移电路。 发射器和接收器SAW滤波器具有不同的通带,并使另一个通带衰减。 相移电路(13)使接收器SAW滤波器(12)的相位在发射机频带中移位。 此外,相移电路(13)具有特征阻抗,其中接收机SAW滤波器(12)的发射机频带中的中心频率处的反射系数的大小不得小于0.8,反射相位角 接收机SAW滤波器(12)的发射机频带中心频率处的系数取0°至45°的范围。