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    • 2. 发明授权
    • Ultrasonic transducer and ultrasonic apparatus having the same
    • 超声波换能器和具有相同功能的超声波装置
    • US07847468B2
    • 2010-12-07
    • US12057546
    • 2008-03-28
    • Wataru KimuraHideaki Taki
    • Wataru KimuraHideaki Taki
    • H01L41/053
    • B06B1/0618H01L41/0472H01L41/0474H01L41/0536H01L41/0838
    • An ultrasonic transducer (101, 102, 103) includes: a front member (1, 1a) having a front side on which an ultrasonic radiating surface (11) is provided and a back side which is opposite to the front side; a side member (2, 2a); a backing member (3, 3a); and a piezoelectric ceramic body (4), which are provided axially integrally, wherein one end side of the side member (2, 2a) is fitted to the back side of the front member (1, 1a), one end side of the backing member (3, 3a) is fitted to another end side of the side member (2, 2a), and the piezoelectric ceramic body (4) is interposed between the front member (1, 1a) and the backing member (3, 3a).
    • 超声波换能器(101,102,103)包括:具有前侧的前部件(1,1a),其上设置有超声波辐射表面(11)和与前侧相对的后侧; 侧构件(2,2a); 背衬构件(3,3a); 以及轴向一体地设置的压电陶瓷体(4),其中所述侧构件(2,2a)的一端侧嵌合在所述前构件(1,1a)的后侧,所述背衬的一端侧 构件(3,3a)安装在侧构件(2,2a)的另一端侧,并且压电陶瓷体(4)插入在前构件(1,1a)和背衬构件(3,3a)之间, 。
    • 3. 发明授权
    • Dielectric filter having increased bandwidth
    • 介质滤波器具有增加的带宽
    • US06844796B2
    • 2005-01-18
    • US10395303
    • 2003-03-25
    • Hideaki TakiKazuto Fuzisaka
    • Hideaki TakiKazuto Fuzisaka
    • H01P1/205H01P7/10H01P1/213H03K5/00
    • H01P7/10H01P1/205
    • A dielectric filter includes a plurality of resonators provided in a dielectric block in parallel to each other. Each resonator is formed through providing an inner conductor on a wall surface of a through-hole extending between first and second end surfaces of the block. An outer conductor is provided on end and side surfaces of the block except for the first end surface. The inner conductor and the outer conductor are connected together so that the second end surface serves as a short circuit end surface, and the first end surface serves as an open end surface. A pair of input-output terminals are provided on a side surface of the block so that the input-output terminals are located adjacent to the open end surface at respective positions corresponding to open ends of two of the resonators. Insulating sections on the side surface isolate corresponding input-output terminals from the outer conductor formed on the side surface of the block. A section without a conductor thereon is used in controlling filter characteristics. This section is provided on the side surface between the input-output terminals and extends for a predetermined distance along the insulating sections from an edge between the side surface and the open end surface.
    • 介质滤波器包括彼此平行地设置在介质块中的多个谐振器。 每个谐振器通过在块的第一和第二端面之间延伸的通孔的壁表面上提供内导体而形成。 外部导体设置在除了第一端面之外的块的端部和侧表面上。 内导体和外导体连接在一起,使得第二端面用作短路端面,第一端面用作开口端面。 一对输入输出端子设置在块的侧表面上,使得输入输出端子位于与两个谐振器的开路端对应的各个位置处邻近开口端表面。 侧面的绝缘部分将相应的输入输出端子与形成在块体的侧表面上的外部导体隔离。 在其上没有导体的部分用于控制滤波器特性。 该部分设置在输入 - 输出端子之间的侧表面上,并且沿着绝缘部分从侧表面和开口端表面之间的边缘延伸预定距离。