Dielectric resonator having an electromagnetic wave absorbing member and apparatus incorporating the dielectric resonator
    2.
    发明授权
    Dielectric resonator having an electromagnetic wave absorbing member and apparatus incorporating the dielectric resonator 失效
    具有电磁波吸收构件的介电谐振器和结合有介质谐振器的装置

    公开(公告)号:US06388541B1

    公开(公告)日:2002-05-14

    申请号:US09047687

    申请日:1998-03-25

    IPC分类号: H01P710

    CPC分类号: H01P1/2084 H01P7/10

    摘要: There is provided a dielectric resonator which can suppress a spurious output acting as unnecessary resonance and can prevent the out-of-band characteristics of a filter from being degraded. Electrodes having circular openings are formed on a dielectric substrate, and the dielectric substrate is arranged between upper and lower conductive cases. A resonance region is used as a portion between the openings of the dielectric substrate, and columnar members consisting of a wave absorber are arranged between the upper and lower conductive cases.

    摘要翻译: 提供了一种介质谐振器,其可以抑制用作不必要的谐振的寄生输出并且可以防止滤波器的带外特性劣化。 在电介质基板上形成具有圆形开口的电极,电介质基板设置在上下导电壳体之间。 谐振区域用作电介质基板的开口部分之间,并且由波吸收体构成的柱状部件设置在上下导电壳体之间。

    Dielectric filter, duplexer, and communication device
    3.
    发明授权
    Dielectric filter, duplexer, and communication device 失效
    介质滤波器,双工器和通信设备

    公开(公告)号:US06236291B1

    公开(公告)日:2001-05-22

    申请号:US09286518

    申请日:1999-04-06

    IPC分类号: H01P120

    CPC分类号: H01P1/20318

    摘要: A dielectric filter includes a case, a substrate having microstrip lines formed thereon, and a dielectric plate having non-electrode parts serving as dielectric resonators. The case includes a supporting part for supporting the lower surface of the dielectric plate and includes a side wall surrounding the side faces of the dielectric plate wherein the supporting part and the side wall are formed in an integral fashion. The substrate is bonded to the case and the dielectric plate is mounted on the supporting part of the case. A metal cover is then placed on the case such that the opening of the case is closed with the cover. In the dielectric filter constructed in the above-described manner, warping of the case for supporting the dielectric plate is suppressed and thus the stress exerted on the dielectric plate is reduced. As a result, the dielectric plate is prevented from being separated from the case and also prevented from having a crack. The above-described structure also allows the dielectric filter to be formed into a small size. The invention also provides a duplexer and a communication device using such a dielectric filter.

    摘要翻译: 介质滤波器包括壳体,其上形成有微带线的衬底和具有用作介电谐振器的非电极部分的电介质板。 壳体包括用于支撑电介质板的下表面的支撑部分,并且包括围绕电介质板的侧面的侧壁,其中支撑部分和侧壁以一体的方式形成。 基板被接合到壳体上,并且电介质板安装在壳体的支撑部分上。 然后将金属盖放置在壳体上,使得壳体的开口用盖封闭。 在以上述方式构成的介质滤波器中,抑制用于支撑电介质板的壳体的翘曲,因此施加在电介质板上的应力减小。 结果,防止电介质板与壳体分离,并且也防止了开裂。 上述结构还允许将介质滤波器形成为小尺寸。 本发明还提供一种使用这种介质滤波器的双工器和通信设备。

    Perpendicular magnetic recording medium
    4.
    发明授权
    Perpendicular magnetic recording medium 失效
    垂直磁记录介质

    公开(公告)号:US4762742A

    公开(公告)日:1988-08-09

    申请号:US945549

    申请日:1986-12-23

    摘要: A perpendicular magnetic recording medium comprises a base having a main surface and form, and a magnetic layer formed on the main surface, and having a recording surface, formed with a number of fine projections, and a susceptible axis substantially perpendicular to the recording surface. The projections are distributed so that the difference between a height level corresponding to an area ratio of 1.0%, obtained when the projections are cut by an imaginary plane parallel to the recording surface, and another height level corresponding to an area ratio of 99.0%, obtained in a like manner, ranges from 40 to 600 .ANG.. A protective film of a substantially uniform thickness is formed on the recording surface of the magnetic layer.

    摘要翻译: 垂直磁记录介质包括具有主表面和形状的基底和形成在主表面上的磁性层,并且具有形成有多个细小突起的记录表面和基本上垂直于记录表面的易感轴。 这些突起被分布,使得当突起被平行于记录表面的虚拟平面切割时获得的与面积比为1.0%的高度水平之差,以及与面积比为99.0%相对应的另一高度水平, 以类似的方式获得,范围为40至600安培。 在磁性层的记录表面上形成厚度基本均匀的保护膜。

    Image tube having output fluorescent screen coated with porous and solid
aluminum layers
    5.
    发明授权
    Image tube having output fluorescent screen coated with porous and solid aluminum layers 失效
    具有输出荧光屏的图像管涂覆有多孔和固体铝层

    公开(公告)号:US4155024A

    公开(公告)日:1979-05-15

    申请号:US803349

    申请日:1977-06-03

    申请人: Tomiya Sonoda

    发明人: Tomiya Sonoda

    CPC分类号: H01J29/18 H01J29/28

    摘要: An image tube equipped with a fluorescent screen comprising a phosphor layer coated on a transparent substrate, a conductive porous substance layer formed on the surface of the phosphor layer, and a conductive solid substance layer formed on the surface of the porous layer. The image tube exhibits improved contrast and brightness.

    摘要翻译: 配备有荧光屏的图像管,其包括涂覆在透明基板上的荧光体层,形成在荧光体层的表面上的导电多孔物质层和形成在多孔层的表面上的导电固体物质层。 图像管显示改善的对比度和亮度。

    Band-pass filter and communication apparatus
    6.
    发明授权
    Band-pass filter and communication apparatus 失效
    带通滤波器和通信装置

    公开(公告)号:US06809615B2

    公开(公告)日:2004-10-26

    申请号:US10118199

    申请日:2002-04-05

    IPC分类号: H01P120

    CPC分类号: H01P1/20318

    摘要: A band-pass filter includes electrodes formed on both upper and lower surfaces of a dielectric plate, and a plurality of non-electrode portions on the upper and lower surfaces of the dielectric plate so that the non-electrode portions face each other across the dielectric plate to form resonators in regions confined by the non-electrode portions on the dielectric plate. The resonators other than at least input- and output-stage resonators are n&lgr;2 resonators, where &lgr; denotes one wavelength and n is an integer more than one. The first- and second-stage resonators, and the third- and fourth-stage resonators are magnetically (inductively) coupled, and the second- and third-stage resonators are capacitively or inductively coupled. The band-pass filter therefore provides satisfactory attenuation characteristic from the pass band to the stop band, and can also be compact and lightweight.

    摘要翻译: 带通滤波器包括形成在电介质板的上表面和下表面上的电极和电介质板的上表面和下表面上的多个非电极部分,使得非电极部分在电介质上彼此面对 以在由电介质板上的非电极部分限制的区域中形成谐振器。 除了至少输入和输出级谐振器之外的谐振器是nλ2谐振器,其中λ表示一个波长,n是大于1的整数。 第一级和第二级谐振器以及第三级和第四级谐振器被磁耦合(电感),并且第二级和第三级谐振器是电容性或电感耦合的。 因此,带通滤波器因此提供从通带到阻带的令人满意的衰减特性,并且还可以紧凑和重量轻。

    Transmission line connection structure, high frequency module, and communication device
    7.
    发明授权
    Transmission line connection structure, high frequency module, and communication device 有权
    传输线连接结构,高频模块和通信设备

    公开(公告)号:US06538526B2

    公开(公告)日:2003-03-25

    申请号:US09837776

    申请日:2001-04-18

    IPC分类号: H01P502

    CPC分类号: H01P1/2016

    摘要: Electrodes having slot patterns, electrodes having strip patterns, or dielectric strips, for example, form transmission lines and resonator patterns on the upper faces of dielectric substrates or conductive substrates, for example. Resonators formed by the resonator patterns are arranged at the ends of the transmission lines at the end portions of the substrates. A pair of the resonators are electromagnetically coupled to each other, whereby the corresponding transmission lines are also connected to each other.

    摘要翻译: 例如,具有槽形图案的电极,具有带状图案的电极或介质条例如在电介质基板或导电基板的上表面上形成传输线和谐振器图案。 由谐振器图案形成的谐振器被布置在基板的端部处的传输线的端部。 一对谐振器彼此电磁耦合,由此相应的传输线也彼此连接。

    Dielectric filter with a unitary external coupling device coupled to
multiple resonator stages
    9.
    发明授权
    Dielectric filter with a unitary external coupling device coupled to multiple resonator stages 有权
    具有耦合到多个谐振器级的整体外部耦合器件的介质滤波器

    公开(公告)号:US6081173A

    公开(公告)日:2000-06-27

    申请号:US146542

    申请日:1998-09-03

    CPC分类号: H01P1/2086 H01P7/10

    摘要: A dielectric filter utilizing a plurality of serially coupled resonators having attenuation maximums at the lower side or higher side, or both, of a pass band frequency region. The filter may include an input element which is coupled with both of a first resonator and a second resonator, and may also include an output element which is coupled with both the last and the next-to-last resonator. In the dielectric filter, it is not necessary to provide an external wire connection to generate such attenuation maximums.

    摘要翻译: 一种利用多个串联耦合的谐振器的介质滤波器,其具有通带频率区域的下侧或更高侧或两者的衰减最大值。 滤波器可以包括与第一谐振器和第二谐振器两者耦合的输入元件,并且还可以包括与最后和最后一个谐振器耦合的输出元件。 在介质滤波器中,不需要提供外部线连接来产生这种衰减最大值。