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    • 4. 发明授权
    • Dielectric filter, dielectric duplexer, and communication equipment
    • 介质滤波器,介质双工器和通信设备
    • US06507250B1
    • 2003-01-14
    • US09374476
    • 1999-08-13
    • Hitoshi TadaHideyuki KatoMotoharu HiroshimaHaruo Matsumoto
    • Hitoshi TadaHideyuki KatoMotoharu HiroshimaHaruo Matsumoto
    • H01P1213
    • H01P1/2056H01P1/2136
    • A dielectric filter or a dielectric duplexer is provided which comprises a dielectric block in a substantially rectangular parallelepiped shape, having a pair of opposite parallel end-faces and plural sides extending between the paired opposite end-faces, one of the plural sides being a mounting face; plural resonator holes elongating through the inside of the dielectric block across the paired opposite end-faces; inner conductors provided on the inner walls of the plural resonator holes, respectively; an outer conductor provided on the outside of the dielectric block; input-output electrodes provided only on one of the paired opposite end-faces, separated from the outer conductor, and capacitance-coupled to the predetermined inner conductors, respectively; and conductive terminals for external connection, connected to the input-output electrodes, having at least portions thereof lying substantially in the same plane as the mounting face. In the dielectric filter or the dielectric duplexer, since input-output electrode are provided on the end-face of the dielectric block, not provided on the sides of the dielectric block, the deterioration of Q0, caused by the input-output electrodes, can be reduced. Accordingly, the insertion loss and the attenuation characteristics are improved.
    • 提供一种介质滤波器或介质双工器,其包括基本上为长方体形状的介质块,具有一对相对的平行端面和在所述一对相对端面之间延伸的多个侧面,所述多个侧面中的一个为安装 面对; 多个谐振器孔延伸穿过所述一对相对端面的所述介质块的内部; 分别设置在多个谐振器孔的内壁上的内部导体; 设置在介质块的外侧的外部导体; 输入输出电极仅设置在与外部导体分离的成对的相对端面中的一个上,并且电容耦合到预定的内部导体; 和用于外部连接的导电端子,连接到输入 - 输出电极,其至少部分基本上位于与安装面相同的平面中。 在介质滤波器或介质双工器中,由于输入输出电极设置在不设置在介质块的侧面的介质块的端面上,所以由输入 - 输出电极引起的Q0的劣化可以 减少 因此,插入损耗和衰减特性得到改善。
    • 7. 发明授权
    • Characteristic adjusting method for dielectric filter using a grinding
tool
    • 使用研磨工具的介质过滤器特性调整方法
    • US6078230A
    • 2000-06-20
    • US843433
    • 1997-04-15
    • Haruo MatsumotoYasuo YamadaYukihiro KitaichiTadahiro YoritaHideyuki KatoTatsuya TsujiguchiHisashi MoriHitoshi Tada
    • Haruo MatsumotoYasuo YamadaYukihiro KitaichiTadahiro YoritaHideyuki KatoTatsuya TsujiguchiHisashi MoriHitoshi Tada
    • H01P1/205H01P1/201H01P11/00
    • H01P1/2056Y10T29/49016
    • A method of adjusting characteristics of a dielectric filter having integral electromagnetic shielding, the dielectric filter comprises a dielectric body having an outer surface including first and second end surfaces and side surfaces extending between the first and second end surfaces; an external conductor disposed on the outer surface of the dielectric body and providing integral electromagnetic shielding of the dielectric filter; at least one hole extending through the dielectric body between the first and second end surfaces; a respective pair of internal conductors provided in the at least one hole and conductively connected to the external conductor at respective ends of the hole, a respective non-conductive portion in the hole being spaced from both ends and thereby separating the pair of internal conductors and defining a respective capacitance between the pair of internal conductors; and signal input and output electrodes provided on the outer surface of the dielectric body and electrically isolated from the external conductor. According to the method, a portion of the dielectric material is removed, for example by grinding, to form the respective non-conductive portion in the hole. The hole may have a changing diameter along its length, due to a hollow formed in one end surface, the non-conductive portion being adjacent to the hollow; or due to a narrowed throttle portion formed at or near the end surface, the non-conductive portion being formed on the throttle portion. Alternatively, the hole may have a substantially constant cross-section, and the non-conductive portion may be substantially flush with the inner surface of the hole. The dielectric body may be regular in shape or may have a side surface with portions spaced from the resonator hole by different respective distances.
    • 一种调节具有整体电磁屏蔽的介质滤波器的特性的方法,所述介质滤波器包括具有包括第一和第二端面以及在所述第一和第二端面之间延伸的侧表面的外表面的电介质体; 设置在电介质体的外表面上并提供介质滤波器的整体电磁屏蔽的外部导体; 至少一个孔延伸穿过第一和第二端面之间的电介质体; 设置在所述至少一个孔中的相应的一对内部导体,并且在所述孔的相应端处导电地连接到所述外部导体,所述孔中的相应的非导电部分与两端间隔开,从而将所述一对内部导体和 限定所述一对内部导体之间的相应电容; 以及设置在电介质体的外表面上并与外部导体电隔离的信号输入和输出电极。 根据该方法,例如通过研磨去除介电材料的一部分,以在孔中形成相应的非导电部分。 由于在一个端面形成的中空孔,孔的长度可以具有变化的直径,非导电部分与中空部相邻; 或者由于形成在端面处或附近的节流部分变窄,所以非导电部分形成在节流部分上。 或者,孔可以具有基本上恒定的横截面,并且非导电部分可以与孔的内表面基本上齐平。 电介质体的形状可以是规则的,也可以具有不同的距离的与谐振器孔隔开的侧面。
    • 8. 发明授权
    • Dielectric filter
    • 介质过滤器
    • US5905420A
    • 1999-05-18
    • US783074
    • 1997-01-15
    • Tatsuya TsujiguchiHaruo MatsumotoHideyuki Kato
    • Tatsuya TsujiguchiHaruo MatsumotoHideyuki Kato
    • H01P1/205H01P1/213H01P1/202H01P5/12
    • H01P1/2136H01P1/2056
    • A dielectric filter is provided which permits one to obtain desired external coupling easily without lowering Qo of resonators. The filter comprises a dielectric block having an open end surface and a shorted end surface and provided with resonator holes. Excitation holes are formed in the block outside the resonator holes, respectively. Input/output electrodes are formed on the open end-surface. The electrodes are electrically connected with conductors formed inside the excitation holes but isolated from an outer conductor. The conductors inside the excitation holes are electrically connected with the outer conductor on the shorted end surface. The excitation holes are electromagnetically coupled to the respective adjacent resonator holes, thus providing external coupling.
    • 提供了一种介质滤波器,其允许在容易地获得期望的外部耦合而不降低谐振器的Qo。 该滤波器包括具有开放端面和短路端面并具有谐振孔的电介质块。 在谐振器孔外部的块中分别形成激励孔。 输入/输出电极形成在开口端面上。 电极与形成在激发孔内部但与外部导体隔离的导体电连接。 励磁孔内的导体与短路端面上的外导体电连接。 励磁孔电磁耦合到各个相邻的谐振器孔,从而提供外部耦合。