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    • 51. 发明公开
    • 노이즈 필터의 실장구조
    • 噪声滤波器安装结构
    • KR1020060006928A
    • 2006-01-20
    • KR1020057019767
    • 2004-09-27
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 사이토켄이치오시마히사토오오이타카아키무라카미토시노리타나카요시미
    • H03H7/075
    • H01G4/35H01F17/06H01F27/40H01F2017/065H01G4/40H03H1/0007H05K1/0243H05K1/18H05K2201/1006H05K2201/10969
    • A noise filter (21) includes a capacitor (22) having a hot-side input terminal (28), a hot-side output terminal (29), a ground-side input terminal (32), and a ground-side output terminal (33). On a wiring board (51), there are formed a hot-side input electrode (58) to be connected to the hot-side input terminal, a hot-side output electrode (59) to be connected to the hot-side output terminal, a ground-side input electrode (60) to be connected to the ground-side input terminal, and a ground-side output electrode (61) to be connected to the ground-side output terminal. In order to make the impedance of the ground- side input terminal viewed from the ground-side output electrode greater than the impedance of the ground-side output terminal viewed from the ground-side output electrode and the impedance of the hot-side output terminal viewed from the ground-side output electrode, the interval (a) between the input electrode (60) and the output electrode (61) of the ground side is increased, thereby reducing the stray capacitance formed between them and obtaining preferable noise removal characteristics.
    • 噪声滤波器(21)包括具有热侧输入端子(28)的电容器(22),热侧输出端子(29),接地侧输入端子(32)和接地侧输出端子 (33)。 在布线板(51)上形成有与热侧输入端子连接的热侧输入电极(58),与热侧输出端子连接的热侧输出电极(59) ,与接地侧输入端子连接的接地侧输入电极(60)和与接地侧输出端子连接的接地侧输出电极(61)。 为了使从接地侧输出电极观察到的接地侧输入端子的阻抗大于从接地侧输出电极观察到的接地侧输出端子的阻抗和热侧输出端子的阻抗 从接地侧输出电极观察,输入电极(60)和接地侧的输出电极(61)之间的间隔(a)增加,从而减小它们之间形成的杂散电容,并获得优选的噪声去除特性。
    • 52. 发明公开
    • 래더 필터
    • 梯子过滤器
    • KR1020010040154A
    • 2001-05-15
    • KR1020000062113
    • 2000-10-21
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 야마모토다카시
    • H03H7/075
    • H03H7/075H03H9/05H03H9/54H03H9/58
    • PURPOSE: To prevent a position deviation of a piezoelectric resonator, to utilize a terminal board without spring property and also to reduce the kinds of metallic terminal boards to be used in a ladder filter. CONSTITUTION: A bent resonator 24 is fixed onto one surface of the metallic terminal board 29 by a conductive pillow 30 and the conductive pillow 33 is arranged on the other surface in a first member 23. Only the conductive pillow 33 is disposed on one surface of the sama metallic terminal board 29 in the second member 21. The bent resonator 24 is fixed onto one surface of the same metallic terminal board 29 by the conductive pillow 30 in the third member 22. The first, second and third members are superimposed and the conductive pillow 33 arranged in the first and the second members 23 and 21 is brought into contact with the bent resonator 24 of the adjacent member.
    • 目的:为了防止压电谐振器的位置偏移,使用无弹性的端子板,并且还可以减少梯形滤波器中使用的金属端子板的种类。 构成:弯曲谐振器24通过导电枕头30固定在金属端子板29的一个表面上,并且导电枕头33布置在第一构件23的另一个表面上。只有导电枕头33设置在 第二构件21中的金属端子板29.弯曲谐振器24通过第三构件22中的导电枕头30固定在同一金属端子板29的一个表面上。第一,第二和第三构件叠加, 布置在第一和第二构件23和21中的导电枕头33与邻近构件的弯曲共振器24接触。