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1. 发明授权

US5436602A Ceramic filter with a transmission zero 失效
标题翻译：陶瓷过滤器带传动零点
公开(公告)号：US5436602A
公开(公告)日：1995-07-25
申请号：US234339
申请日：1994-04-28
申请人： Thomas McVeety , David G. Clifford, Jr.
发明人： Thomas McVeety , David G. Clifford, Jr.
IPC分类号： H01P1/205
CPC分类号： H01P1/2056
摘要： A ceramic filter with a high side transmission zero. The ceramic filter (10) has: a filter body (12) of a dielectric material having top, bottom and side surfaces (14, 16, 18, 20, 22, 24). Two through-holes extending from the top (14) to the bottom surface (16), defining resonators (26,28) are included. The surfaces are substantially covered with a conductive material, defining a metallized layer (30), with the exception that the top surface (14) is substantially uncoated and with the additional exception that a portion of the side surface is also uncoated (32) in proximity to the bottom surface (16), and it extends laterally at least in proximity to the resonators (26,28), defining a magnetic transmission line (32) for magnetically coupling the resonators (26,28). Surface mountable first and second input-output pads (34,38) are also provided.
摘要翻译：陶瓷滤波器，具有高端传输零点。陶瓷过滤器（10）具有：具有顶部，底部和侧面（14,16,18,20,22,24）的电介质材料的过滤体（12）。包括从顶部（14）延伸到底部表面（16），限定谐振器（26,28）的两个通孔。所述表面基本上被导电材料覆盖，所述导电材料限定了金属化层（30），除了所述顶表面（14）基本上未涂覆之外，另外例外的是所述侧表面的一部分也未被涂覆（32）靠近底表面（16），并且其至少邻近谐振器（26,28）横向延伸，限定用于磁耦合谐振器（26,28）的磁传输线（32）。还提供了可表面安装的第一和第二输入 - 输出焊盘（34,38）。

2. 发明授权

US5602518A Ceramic filter with channeled features to control magnetic coupling 失效
标题翻译：陶瓷过滤器具有通道特征，用于控制磁耦合
公开(公告)号：US5602518A
公开(公告)日：1997-02-11
申请号：US410024
申请日：1995-03-24
申请人： David G. Clifford, Jr. , Brian C. Walker
发明人： David G. Clifford, Jr. , Brian C. Walker
IPC分类号： H01P1/205
CPC分类号： H01P1/2056
摘要： A ceramic filter (120) with at least one transmission zero is disclosed. The filter (120) has a filter body comprising a block of dielectric material and having top (110), bottom (112), and side surfaces, and having metallized through-holes extending from the top to the bottom surfaces defining resonators. The surfaces are substantially covered with a conductive material defining a metallized layer. The top surface (110) is uncoated. The filter (120) can also include input-output pads ( 104, 106). The bottom surface (112) has a channel (108) defining a magnetic coupling between the resonators. The channel configuration and placement can vary depending on the desired frequency response.
摘要翻译：公开了具有至少一个传输零点的陶瓷过滤器（120）。过滤器（120）具有包括电介质材料块并具有顶部（110），底部（112）和侧表面的过滤器主体，并且具有从顶部延伸到限定谐振器的底部表面的金属化通孔。表面基本上覆盖有限定金属化层的导电材料。顶表面（110）是未涂覆的。过滤器（120）还可以包括输入 - 输出垫（104,106）。底表面（112）具有限定谐振器之间的磁耦合的通道（108）。通道配置和布局可以根据所需的频率响应而变化。

3. 发明授权

US5721520A Ceramic filter with ground plane features which provide transmission zero and coupling adjustment 失效
标题翻译：具有接地平面特征的陶瓷过滤器，其提供传动零点和联轴器调节
公开(公告)号：US5721520A
公开(公告)日：1998-02-24
申请号：US514581
申请日：1995-08-14
申请人： Thomas G. McVeety , Truc G. N. Hoang , David G. Clifford, Jr.
发明人： Thomas G. McVeety , Truc G. N. Hoang , David G. Clifford, Jr.
IPC分类号： H01P1/205 , H01P1/20
CPC分类号： H01P1/2056
摘要： A ceramic filter (10) is shown and described. The filter (10) has a filter body having top (14), bottom (16), and side surfaces (18, 20, 22 and 24) with through holes (26, 28) extending from the top (14) to the bottom surfaces (16) defining resonators. The surfaces are substantially covered with a conductive material defining a metallized layer, with the exception that the top surface (14) is substantially uncoated, and with an additional exception that a portion of a side surface is substantially uncoated in proximity to the top surface (14) and extending at least in proximity to between the resonators (26, 28), defining an unmetallized coupling region for electrically coupling the resonators. The filter (10) also has first and second input-output pads (34, 38) on a side surface for facilitating connection to a circuit board, for example.
摘要翻译：示出并描述陶瓷过滤器（10）。过滤器（10）具有具有顶部（14），底部（16）和侧表面（18,20,22和24）的过滤器本体，其具有从顶部（14）延伸到底部的通孔（26,28）限定谐振器的表面（16）。表面基本上被限定金属化层的导电材料覆盖，除了顶表面（14）基本上未涂覆之外，并且除了侧表面的一部分基本上未涂覆在顶表面附近外 14）并且至少在谐振器（26,28）之间延伸，限定用于电耦合谐振器的未金属化耦合区域。例如，过滤器（10）还在侧表面上具有第一和第二输入 - 输出焊盘（34,38），以便于连接到电路板。

4. 发明授权

US4800348A Adjustable electronic filter and method of tuning same 失效
标题翻译：可调电子滤波器及其调谐方法
公开(公告)号：US4800348A
公开(公告)日：1989-01-24
申请号：US81264
申请日：1987-08-03
申请人： George C. Rosar , David G. Clifford, Jr.
发明人： George C. Rosar , David G. Clifford, Jr.
IPC分类号： H01P1/202 , H01P1/205 , H01P7/04
CPC分类号： H01P1/2056
摘要： An adjustable electronic filter apparatus is disclosed comprising a dielectric block having one or more through-holes and having a conformal conductive coating substantially over all outside surfaces as well as each through-hole therein. Each through-hole so plated forms a resonator from a transmission line which includes an open portion, for providing capacitive reactance at a first end, and a short-circuited end as a base, for providing an associated distributed inductance at a second end thereof. A unique method of tuning the adjustable electronic filter, whether a single resonator, a plurality of resonators, or a plurality of intercoupled multi-resonator filters, is disclosed that permits bi-directional tuning for at least one resonator in each of the above exemplary embodiments. By selectively adjusting an inductive portion of the plating at the base of each resonator so tuned, a resonator is quickly and accurately adjusted to a desired frequency. The selective adjusting may be accomplished by subtractive processes, such as abrasion or laser trimming, or by an additive process, such as by adding conductive paint for partially filling in a removed or absent portion of the plating at the base of a resonator.
摘要翻译：公开了一种可调节的电子滤波器装置，其包括具有一个或多个通孔并具有基本上在所有外表面上的共形导电涂层的介质块以及其中的每个通孔。每个通孔如此形成一个传输线的谐振器，该传输线包括开口部分，用于在第一端提供容抗，而短路端作为基极，用于在其第二端提供相关的分布电感。公开了一种独特的调谐可调电子滤波器的方法，无论是单个谐振器，多个谐振器还是多个互耦合多谐振器滤波器，其允许在上述每个示例性实施例中的至少一个谐振器的双向调谐。通过选择性地调整如调谐的每个谐振器的基极处的电镀的感应部分，谐振器被快速且准确地调节到期望的频率。选择性调整可以通过减法处理，例如磨损或激光修整，或者通过添加工艺来实现，例如通过添加用于部分填充在谐振器底部的镀层的去除或不存在部分的导电涂料来实现。

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