CN110391486B - Duplexer, dielectric filter and capacitive coupling structure - Google Patents
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Abstract
Description
技术领域Technical Field
本发明涉及滤波器技术领域，具体涉及一种双工器、介质滤波器及其容性耦合结构。The present invention relates to the technical field of filters, and in particular to a duplexer, a dielectric filter and a capacitive coupling structure thereof.
背景技术Background Art
随着通信技术的高速发展，为了满足使用需求，通信器件也日益小型化。介质滤波器因其具备小型化的特点，在通信设备中得到了广泛的应用。With the rapid development of communication technology, communication devices are becoming increasingly miniaturized to meet usage needs. Dielectric filters have been widely used in communication equipment due to their miniaturization characteristics.
为实现良好的损耗和抑制的效果，介质滤波器通常通过增加交叉耦合的方式以达到更好的性能以及更小的体积，因此需在介质滤波器上设置容性耦合结构。介质滤波器为实现容性耦合的目地，传统的做法通常在介质本体中相邻的两个介质谐振器之间设置深孔，通过调节深孔的底壁与介质本体的下表面之间的间距以调节容性耦合带宽，其中，深孔的底壁与介质本体的下表面之间的间距越小，容性耦合带宽越小，为了实现小的容性耦合带宽，深孔的底壁与介质本体的下表面之间的间距需要足够小，在成产过程的烧结工艺中，不利于烧结成型，增加了生产难度，也不利于后续的生产调试。In order to achieve good loss and suppression effects, dielectric filters usually increase cross-coupling to achieve better performance and smaller volume, so a capacitive coupling structure needs to be set on the dielectric filter. In order to achieve the purpose of capacitive coupling, the traditional practice of dielectric filters is to set a deep hole between two adjacent dielectric resonators in the dielectric body, and adjust the capacitive coupling bandwidth by adjusting the distance between the bottom wall of the deep hole and the lower surface of the dielectric body. The smaller the distance between the bottom wall of the deep hole and the lower surface of the dielectric body, the smaller the capacitive coupling bandwidth. In order to achieve a small capacitive coupling bandwidth, the distance between the bottom wall of the deep hole and the lower surface of the dielectric body needs to be small enough, which is not conducive to sintering molding in the sintering process of the production process, increases the difficulty of production, and is not conducive to subsequent production debugging.
发明内容Summary of the invention
基于此，提出了一种双工器、介质滤波器及其容性耦合结构，所述容性耦合结构生产难度低，也方便进行后续的生产调试；如此，采用所述容性耦合结构的介质滤波器的生产难度低，生产调试难度低；如此，采用所述介质滤波器的双工器的生产难度低，生产调试难度低。Based on this, a duplexer, a dielectric filter and a capacitive coupling structure thereof are proposed. The capacitive coupling structure has low production difficulty and is convenient for subsequent production and debugging. Thus, the dielectric filter using the capacitive coupling structure has low production difficulty and low production and debugging difficulty. Thus, the duplexer using the dielectric filter has low production difficulty and low production and debugging difficulty.
其技术方案如下：The technical solution is as follows:
一方面，提供了一种介质滤波器的容性耦合结构，包括设于介质本体中相邻的两个介质谐振器之间、按第一预设长度和预设深度设置的第一调节槽，所述第一调节槽的一端与所述介质本体的一侧壁间隔设置，所述第一调节槽的另一端与所述介质本体的另一侧壁连通或所述第一调节槽的另一端与隔绝窗口连通。On the one hand, a capacitive coupling structure of a dielectric filter is provided, comprising a first adjustment groove arranged between two adjacent dielectric resonators in a dielectric body and set according to a first preset length and a preset depth, one end of the first adjustment groove is spaced apart from a side wall of the dielectric body, and the other end of the first adjustment groove is connected to the other side wall of the dielectric body or the other end of the first adjustment groove is connected to an isolation window.
上述介质滤波器的容性耦合结构，在介质本体相邻的两个介质谐振器之间按第一预设长度灵活的开设出预设深度的第一调节槽，使得第一调节槽的一端与介质本体的一侧壁间隔设置，第一调节槽的另一端与介质本体的另一侧壁连通，即第一调节槽延伸至介质本体的另一侧壁，或第一调节槽的另一端与隔绝窗口连通。上述介质滤波器的容性耦合结构，通过灵活的调节第一调节槽的开设深度以及第一调节槽的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。The capacitive coupling structure of the dielectric filter flexibly opens a first adjustment groove of a preset depth between two adjacent dielectric resonators of the dielectric body according to a first preset length, so that one end of the first adjustment groove is spaced from one side wall of the dielectric body, and the other end of the first adjustment groove is connected to the other side wall of the dielectric body, that is, the first adjustment groove extends to the other side wall of the dielectric body, or the other end of the first adjustment groove is connected to the isolation window. The capacitive coupling structure of the dielectric filter can flexibly adjust the capacitive coupling bandwidth by flexibly adjusting the opening depth of the first adjustment groove and the length of the first adjustment groove. Compared with the traditional blind hole form, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
下面进一步对技术方案进行说明：The technical solution is further described below:
在其中一个实施例中，所述第一调节槽的底壁按第二预设长度设有第二调节槽，所述第二调节槽贯穿所述介质本体，所述第二调节槽的一端与所述介质本体的另一侧壁连通或所述第二调节槽的一端与所述隔绝窗口连通。如此，通过设置第二调节槽，能够进一步灵活的对容性耦合带宽进行调节。In one embodiment, the bottom wall of the first adjustment groove is provided with a second adjustment groove according to a second preset length, the second adjustment groove penetrates the dielectric body, one end of the second adjustment groove is connected to the other side wall of the dielectric body or one end of the second adjustment groove is connected to the isolation window. In this way, by providing the second adjustment groove, the capacitive coupling bandwidth can be further flexibly adjusted.
在其中一个实施例中，所述第二调节槽的长度为W1，且W1可调。如此，通过调节第二调节槽的长度，能够进一步灵活的对容性耦合带宽进行调节。In one embodiment, the length of the second adjustment slot is W 1 , and W 1 is adjustable. Thus, by adjusting the length of the second adjustment slot, the capacitive coupling bandwidth can be further flexibly adjusted.
在其中一个实施例中，所述第二调节槽的另一端的侧壁设置为第一圆弧段，和/或所述第一调节槽的一端的侧壁设置为第二圆弧段。如此，便于对第一调节槽和第二调节槽进行加工。In one embodiment, the side wall of the other end of the second adjustment groove is set as a first arc segment, and/or the side wall of one end of the first adjustment groove is set as a second arc segment. In this way, the first adjustment groove and the second adjustment groove are easily processed.
在其中一个实施例中，所述第一调节槽的长度为W2，且W2可调，和/或所述第一调节槽的深度为H，且H可调。如此，调节方式灵活，结构简单、方便，便于加工。In one embodiment, the length of the first adjustment groove is W 2 , and W 2 is adjustable, and/or the depth of the first adjustment groove is H, and H is adjustable. In this way, the adjustment method is flexible, the structure is simple and convenient, and the processing is easy.
在其中一个实施例中，所述介质本体包括至少三个并列设置的所述介质谐振器，相邻的两个所述介质谐振器之间设有所述第一调节槽，且所述第一调节槽的一端与所述介质本体的一侧壁间隔设置，所述第一调节槽的另一端与所述介质本体的另一侧壁连通。In one of the embodiments, the dielectric body includes at least three dielectric resonators arranged in parallel, the first adjustment groove is provided between two adjacent dielectric resonators, one end of the first adjustment groove is spaced apart from a side wall of the dielectric body, and the other end of the first adjustment groove is connected to the other side wall of the dielectric body.
在其中一个实施例中，所述介质谐振器设有用于调节频率的调节孔。如此，能够根据实际需要对频率进行调节。In one embodiment, the dielectric resonator is provided with an adjustment hole for adjusting the frequency, so that the frequency can be adjusted according to actual needs.
在其中一个实施例中，所述介质本体包括四个所述介质谐振器，四个所述介质谐振器呈两行两列设置，且所述介质本体上设有用于隔绝四个所述介质谐振器的隔绝窗口，相邻的两个所述介质谐振器之间设有所述第一调节槽，所述第一调节槽的一端与所述介质本体的一侧壁间隔设置，所述第一调节槽的另一端与所述隔绝窗口连通。In one embodiment, the dielectric body includes four dielectric resonators, which are arranged in two rows and two columns, and an isolation window for isolating the four dielectric resonators is provided on the dielectric body, and the first adjustment groove is provided between two adjacent dielectric resonators, one end of the first adjustment groove is spaced from a side wall of the dielectric body, and the other end of the first adjustment groove is connected to the isolation window.
另一方面，提供了一种介质滤波器，包括所述的容性耦合结构。On the other hand, a dielectric filter is provided, comprising the capacitive coupling structure.
上述介质滤波器，在介质本体相邻的两个介质谐振器之间按第一预设长度灵活的开设出预设深度的第一调节槽，使得第一调节槽的一端与介质本体的一侧壁间隔设置，第一调节槽的另一端与介质本体的另一侧壁连通，即第一调节槽延伸至介质本体的另一侧壁，或第一调节槽的另一端与隔绝窗口连通。上述介质滤波器，通过灵活的调节第一调节槽的开设深度以及第一调节槽的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。The dielectric filter flexibly opens a first adjustment groove of a preset depth between two adjacent dielectric resonators of the dielectric body according to a first preset length, so that one end of the first adjustment groove is spaced from one side wall of the dielectric body, and the other end of the first adjustment groove is connected to the other side wall of the dielectric body, that is, the first adjustment groove extends to the other side wall of the dielectric body, or the other end of the first adjustment groove is connected to the isolation window. The dielectric filter can flexibly adjust the capacitive coupling bandwidth by flexibly adjusting the opening depth of the first adjustment groove and the length of the first adjustment groove. Compared with the traditional blind hole form, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
再一方面，提供了一种双工器，包括所述的介质滤波器。On the other hand, a duplexer is provided, comprising the dielectric filter.
上述双工器，在介质本体相邻的两个介质谐振器之间按第一预设长度灵活的开设出预设深度的第一调节槽，使得第一调节槽的一端与介质本体的一侧壁间隔设置，第一调节槽的另一端与介质本体的另一侧壁连通，即第一调节槽延伸至介质本体的另一侧壁，或第一调节槽的另一端与隔绝窗口连通。上述双工器，通过灵活的调节第一调节槽的开设深度以及第一调节槽的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。The above duplexer flexibly opens a first adjustment groove of a preset depth between two adjacent dielectric resonators of the dielectric body according to a first preset length, so that one end of the first adjustment groove is spaced from one side wall of the dielectric body, and the other end of the first adjustment groove is connected to the other side wall of the dielectric body, that is, the first adjustment groove extends to the other side wall of the dielectric body, or the other end of the first adjustment groove is connected to the isolation window. The above duplexer can flexibly adjust the capacitive coupling bandwidth by flexibly adjusting the opening depth of the first adjustment groove and the length of the first adjustment groove. Compared with the traditional blind hole form, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为一个实施例的介质滤波器的容性耦合结构的第一表面的结构示意图；FIG1 is a schematic structural diagram of a first surface of a capacitive coupling structure of a dielectric filter according to an embodiment;
图2为图1的介质滤波器的容性耦合结构A-A部分的剖视图；Fig. 2 is a cross-sectional view of a capacitive coupling structure A-A portion of the dielectric filter of Fig. 1;
图3为图1的介质滤波器的容性耦合结构的第二表面的结构示意图；FIG3 is a schematic structural diagram of a second surface of the capacitive coupling structure of the dielectric filter of FIG1 ;
图4为图3的介质滤波器的容性耦合结构B-B部分的剖视图；Fig. 4 is a cross-sectional view of a capacitive coupling structure B-B portion of the dielectric filter of Fig. 3;
图5为另一个实施例的介质滤波器的容性耦合结构的第一表面的结构示意图；FIG5 is a schematic structural diagram of a first surface of a capacitive coupling structure of a dielectric filter according to another embodiment;
图6为图5的介质滤波器的容性耦合结构C-C部分的剖视图；Fig. 6 is a cross-sectional view of a capacitive coupling structure C-C portion of the dielectric filter of Fig. 5;
图7为图5的介质滤波器的容性耦合结构的第二表面的结构示意图；FIG7 is a schematic structural diagram of a second surface of the capacitive coupling structure of the dielectric filter of FIG5 ;
图8为图7的介质滤波器的容性耦合结构D-D部分的剖视图；Fig. 8 is a cross-sectional view of a portion D-D of a capacitive coupling structure of the dielectric filter of Fig. 7;
图9为一个实施例的介质滤波器的容性耦合结构的介质本体的结构示意图；FIG9 is a schematic structural diagram of a dielectric body of a capacitive coupling structure of a dielectric filter according to an embodiment;
图10为一个实施例的介质滤波器的容性耦合结构的W2与容性耦合带宽的关系图；FIG10 is a diagram showing the relationship between W2 and the capacitive coupling bandwidth of a capacitive coupling structure of a dielectric filter according to an embodiment;
图11为另一个实施例的介质滤波器的容性耦合结构的W2与容性耦合带宽的关系图；FIG11 is a diagram showing the relationship between W2 and the capacitive coupling bandwidth of a capacitive coupling structure of a dielectric filter according to another embodiment;
图12为一个实施例的介质滤波器的容性耦合结构的H与容性耦合带宽的关系图；FIG12 is a diagram showing the relationship between H and capacitive coupling bandwidth of a capacitive coupling structure of a dielectric filter according to an embodiment;
图13为一个实施例的介质滤波器的容性耦合结构的W1与容性耦合带宽的关系图。FIG. 13 is a diagram showing the relationship between W1 and the capacitive coupling bandwidth of a capacitive coupling structure of a dielectric filter according to an embodiment.
附图标记说明：Description of reference numerals:
100、介质本体，110、隔绝窗口，120、第一调节槽，121、第二圆弧段，130、第二调节槽，131、第一圆弧段，140、第一表面，150、第二表面，200、导电层，1000、介质谐振器，1100、调节孔。100. Dielectric body, 110. Isolation window, 120. First adjustment groove, 121. Second arc segment, 130. Second adjustment groove, 131. First arc segment, 140. First surface, 150. Second surface, 200. Conductive layer, 1000. Dielectric resonator, 1100. Adjustment hole.
具体实施方式DETAILED DESCRIPTION
为使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施方式，对本发明进行进一步的详细说明。应当理解的是，此处所描述的具体实施方式仅用以解释本发明，并不限定本发明的保护范围。In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.
需要说明的是，当元件被称为“设置于”、“固设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当元件被称为“固设于”另一个元件，或与另一个元件“固定连接”，它们之间可以是可拆卸固定方式也可以是不可拆卸的固定方式。当一个元件被认为是“连接”、“转动连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”、“上”、“下”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or being "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于约束本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.
本发明中所述“第一”、“第二”、“第三”等类似用语不代表具体的数量及顺序，仅仅是用于名称的区分。The terms "first", "second", "third" and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.
如图1至图4所示，在一个实施例中，公开了一种介质滤波器的容性耦合结构，包括设于介质本体100中相邻的两个介质谐振器1000之间、按第一预设长度和预设深度设置的第一调节槽120，第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与介质本体100的另一侧壁连通或第一调节槽120的另一端与隔绝窗口110连通。As shown in FIGS. 1 to 4 , in one embodiment, a capacitive coupling structure of a dielectric filter is disclosed, including a first adjustment groove 120 disposed between two adjacent dielectric resonators 1000 in a dielectric body 100 and arranged according to a first preset length and a preset depth, one end of the first adjustment groove 120 being spaced apart from a side wall of the dielectric body 100 , and the other end of the first adjustment groove 120 being communicated with the other side wall of the dielectric body 100 or the other end of the first adjustment groove 120 being communicated with an isolation window 110 .
上述实施例的介质滤波器的容性耦合结构，在介质本体100相邻的两个介质谐振器1000之间按第一预设长度灵活的开设出预设深度的第一调节槽120，使得第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与介质本体100的另一侧壁连通，即第一调节槽120延伸至介质本体100的另一侧壁，或第一调节槽120的另一端与隔绝窗口110连通。上述实施例的介质滤波器的容性耦合结构，通过灵活的调节第一调节槽120的开设深度以及第一调节槽120的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽120的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。The capacitive coupling structure of the dielectric filter of the above embodiment flexibly opens a first adjustment groove 120 of a preset depth between two adjacent dielectric resonators 1000 of the dielectric body 100 according to a first preset length, so that one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is connected to the other side wall of the dielectric body 100, that is, the first adjustment groove 120 extends to the other side wall of the dielectric body 100, or the other end of the first adjustment groove 120 is connected to the isolation window 110. The capacitive coupling structure of the dielectric filter of the above embodiment can flexibly adjust the capacitive coupling bandwidth by flexibly adjusting the opening depth of the first adjustment groove 120 and the length of the first adjustment groove 120. Compared with the traditional blind hole form, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove 120 separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
需要进行说明的是，第一调节槽120的一侧壁与介质本体100的另一侧壁是指介质本体不同的两个侧壁，例如相对间隔设置的两个侧壁。It should be noted that one side wall of the first adjustment groove 120 and the other side wall of the dielectric body 100 refer to two different side walls of the dielectric body, for example, two side walls arranged relatively spaced apart.
在一个实施例中，第一调节槽120的深度为H，且H可调。第一调节槽120的深度可以根据实际使用需求进行灵活的调节，只需满足改变第一调节槽120的深度能够对容性耦合带宽进行灵活的调节即可。In one embodiment, the depth of the first adjustment groove 120 is H, and H is adjustable. The depth of the first adjustment groove 120 can be flexibly adjusted according to actual use requirements, as long as the depth of the first adjustment groove 120 can be changed to flexibly adjust the capacitive coupling bandwidth.
在一个实施例中，第一调节槽120的长度为W2，且W2可调。第一调节槽120的长度可以根据实际使用需求进行灵活的调节，只需满足改变第一调节槽120的长度能够对容性耦合带宽进行灵活的调节即可。In one embodiment, the length of the first adjustment slot 120 is W 2 , and W 2 is adjustable. The length of the first adjustment slot 120 can be flexibly adjusted according to actual use requirements, as long as the length of the first adjustment slot 120 can be changed to flexibly adjust the capacitive coupling bandwidth.
需要进行说明的是，第一调节槽120的深度和第一调节槽120的长度可以同时进行调节，也能分别进行调节，优选为同时进行调节，相比传统的盲孔形式，同时进行调节能够提高设计的灵活性，降低生产难度，便于进行调试。第一调节槽120优选为长条形或直线形，便于加工，也便于对第一调节槽120的长度进行调节；当然，第一调节槽120也可以为弧形，只需满足能够对第一调节槽120的长度和深度进行调节以调节容性耦合带宽即可。It should be noted that the depth of the first adjustment groove 120 and the length of the first adjustment groove 120 can be adjusted simultaneously or separately, preferably simultaneously. Compared with the traditional blind hole form, simultaneous adjustment can improve the flexibility of design, reduce the difficulty of production, and facilitate debugging. The first adjustment groove 120 is preferably in the shape of a long strip or a straight line, which is convenient for processing and also convenient for adjusting the length of the first adjustment groove 120; of course, the first adjustment groove 120 can also be in an arc shape, as long as the length and depth of the first adjustment groove 120 can be adjusted to adjust the capacitive coupling bandwidth.
如图1至图3所示，在一个实施例中，第一调节槽120的一端的底壁按第二预设长度设有第二调节槽130，第二调节槽130贯穿介质本体100，第二调节槽130的一端与介质本体100的另一侧壁连通或第二调节槽130的一端与隔绝窗口110连通。如此，进一步在第一调节槽120的底壁上按第二预设长度简单、方便的开设出第二调节槽130，通过改变第二调节槽130的长度从而进一步对容性耦合带宽进行调节，进一步增强了调节的灵活性。As shown in FIGS. 1 to 3 , in one embodiment, the bottom wall at one end of the first adjustment groove 120 is provided with a second adjustment groove 130 according to a second preset length, the second adjustment groove 130 penetrates the dielectric body 100, and one end of the second adjustment groove 130 is communicated with the other side wall of the dielectric body 100 or one end of the second adjustment groove 130 is communicated with the isolation window 110. In this way, the second adjustment groove 130 is simply and conveniently opened on the bottom wall of the first adjustment groove 120 according to the second preset length, and the capacitive coupling bandwidth is further adjusted by changing the length of the second adjustment groove 130, thereby further enhancing the flexibility of adjustment.
进一步地，第二调节槽130的长度为W1，且W1可调。如此，第二预设长度也能够根据实际使用需求进行灵活的调节，只需满足改变第二调节槽130的长度能够对容性耦合带宽进行灵活的调节即可。第二调节槽130的轮廓形状可以为弧形，也可以为直线形或条状，只需满足调节第二调节槽130的长度从而能够相应调节容性耦合带宽即可。Furthermore, the length of the second adjustment slot 130 is W 1 , and W 1 is adjustable. In this way, the second preset length can also be flexibly adjusted according to actual use requirements, as long as the length of the second adjustment slot 130 is changed to flexibly adjust the capacitive coupling bandwidth. The contour shape of the second adjustment slot 130 can be an arc, or a straight line or a strip, as long as the length of the second adjustment slot 130 is adjusted to adjust the capacitive coupling bandwidth accordingly.
如图1所示，更进一步地，第二调节槽130的另一端的侧壁设置为第一圆弧段131。如此，便于在第一调节槽120的底壁上加工出第二调节槽130，进一步降低了生产难度。当然，在其他实施例中，第二调节槽130的另一端的侧壁也可以设置为直角过渡段，只需满足调节第二调节槽130的长度从而能够调节容性耦合带宽即可。As shown in FIG1 , further, the side wall at the other end of the second adjustment groove 130 is set as a first arc segment 131. In this way, it is convenient to process the second adjustment groove 130 on the bottom wall of the first adjustment groove 120, further reducing the difficulty of production. Of course, in other embodiments, the side wall at the other end of the second adjustment groove 130 can also be set as a right-angle transition section, as long as the length of the second adjustment groove 130 is adjusted so as to adjust the capacitive coupling bandwidth.
如图3所示，在上述任一实施例的基础上，第一调节槽120的一端的侧壁设置为第二圆弧段121。如此，便于在介质本体100上加工出第一调节槽120，进一步降低了生产难度。当然，在其他实施例中，第一调节槽120的一端的侧壁也可以设置为直角过渡段，只需满足调节第一调节槽120的长度和深度从而能够调节容性耦合带宽即可。As shown in FIG3 , based on any of the above embodiments, the side wall of one end of the first adjustment groove 120 is set as a second arc segment 121. In this way, it is convenient to process the first adjustment groove 120 on the dielectric body 100, further reducing the production difficulty. Of course, in other embodiments, the side wall of one end of the first adjustment groove 120 can also be set as a right-angle transition segment, as long as the length and depth of the first adjustment groove 120 are adjusted to adjust the capacitive coupling bandwidth.
在上述任一实施例的基础上，介质本体100采用高介电常数材质一体成型。如此，将介质本体100采用陶瓷介质等高介电常数材质一体成型，不仅能够起到传输信号的作用，还能起到结构支撑的作用。采用陶瓷介质材质时，介质本体100可以通过压铸成型的方式制得，能够显著减小整个介质波导滤波器的尺寸和重量。Based on any of the above embodiments, the dielectric body 100 is integrally formed using a high dielectric constant material. In this way, the dielectric body 100 is integrally formed using a high dielectric constant material such as a ceramic dielectric, which can not only play a role in transmitting signals, but also play a role in structural support. When a ceramic dielectric material is used, the dielectric body 100 can be manufactured by die-casting, which can significantly reduce the size and weight of the entire dielectric waveguide filter.
如图1及图4所示，在上述任一实施例的基础上，介质谐振器1000设有用于调节频率的调节孔1100。如此，利用调节孔1100可以对频率进行相应的调节。调节孔1100的深度可根据实际需要的频率进行相应的调节，只需满足实际使用需求即可。As shown in FIG. 1 and FIG. 4 , based on any of the above embodiments, the dielectric resonator 1000 is provided with an adjustment hole 1100 for adjusting the frequency. In this way, the frequency can be adjusted accordingly using the adjustment hole 1100. The depth of the adjustment hole 1100 can be adjusted accordingly according to the actual required frequency, and only needs to meet the actual use requirements.
如图1至图4所示，在一个实施例中，介质本体100包括相对间隔设置的第一表面140和第二表面150，第一表面140设有调节孔1100，第一调节槽120设置于第一表面140。如此，将调节孔1100和第一调节槽120均设置于第一表面140上，加工过程中不需对介质本体100进行翻转从而能够快速的在一个平面上将调节孔1100和第一调节槽120加工出来，节省了工序，提高了加工效率。当然，在其他实施例中，如图5至图8所示，调节孔1100设置于第一表面140上后，还可以将第一调节槽120设置于第二表面150，只需满足调节第一调节槽120的长度和深度即可灵活的调节容性耦合带宽即可。As shown in FIGS. 1 to 4 , in one embodiment, the dielectric body 100 includes a first surface 140 and a second surface 150 that are relatively spaced apart, the first surface 140 is provided with an adjustment hole 1100, and the first adjustment groove 120 is provided on the first surface 140. In this way, the adjustment hole 1100 and the first adjustment groove 120 are both provided on the first surface 140, and the dielectric body 100 does not need to be turned over during the processing, so that the adjustment hole 1100 and the first adjustment groove 120 can be quickly processed on a plane, saving the process and improving the processing efficiency. Of course, in other embodiments, as shown in FIGS. 5 to 8 , after the adjustment hole 1100 is provided on the first surface 140, the first adjustment groove 120 can also be provided on the second surface 150, and the capacitive coupling bandwidth can be flexibly adjusted by only adjusting the length and depth of the first adjustment groove 120.
如图2至图4、图5至图8所示，为了实现窄的容性耦合带宽，同时降低生产难度，使得设计加工简单，易于装配，第二调节槽130的长度(以W1表示)、第一调节槽120的长度(以W2表示)和深度(以H表示)，以及第一调节槽120的另一端与介质本体100的侧壁之间的距离(以W3表示)，可以根据实际要求灵活的进行调节，从而可重复进行调试，降低了设计和调试的难度。As shown in FIGS. 2 to 4 and 5 to 8 , in order to achieve a narrow capacitive coupling bandwidth and reduce the difficulty of production, so that the design and processing are simple and easy to assemble, the length (expressed as W1 ) of the second adjustment groove 130, the length (expressed as W2 ) and the depth (expressed as H) of the first adjustment groove 120, and the distance (expressed as W3 ) between the other end of the first adjustment groove 120 and the side wall of the dielectric body 100 can be flexibly adjusted according to actual requirements, so that debugging can be repeated, reducing the difficulty of design and debugging.
如图10所示，在一个实施例中，第二调节槽130的长度W1＝0mm，第一调节槽120的深度H＝0.7mm，第一调节槽120的另一端与介质本体100的侧壁之间的距离W3＝2mm，通过改变第一调节槽120的长度，即调节W2的大小，即可对容性耦合带宽相应进行调节，其中，W2越大，容性耦合带宽越小。As shown in FIG. 10 , in one embodiment, the length W 1 of the second adjustment groove 130 is 0 mm, the depth H of the first adjustment groove 120 is 0.7 mm, and the distance W 3 between the other end of the first adjustment groove 120 and the side wall of the dielectric body 100 is 2 mm. By changing the length of the first adjustment groove 120, that is, adjusting the size of W 2 , the capacitive coupling bandwidth can be adjusted accordingly, wherein the larger the W 2 , the smaller the capacitive coupling bandwidth.
如图11所示，在一个实施例中，第二调节槽130的长度W1＝0mm，第一调节槽120的深度H＝2mm，第一调节槽120的另一端与介质本体100的侧壁之间的距离W3＝2mm，通过改变第一调节槽120的长度，即调节W2的大小，即可对容性耦合带宽相应进行调节，其中，W2越大，容性耦合带宽越小。As shown in FIG. 11 , in one embodiment, the length W 1 of the second adjustment groove 130 is 0 mm, the depth H of the first adjustment groove 120 is 2 mm, and the distance W 3 between the other end of the first adjustment groove 120 and the side wall of the dielectric body 100 is 2 mm. By changing the length of the first adjustment groove 120, that is, adjusting the size of W 2 , the capacitive coupling bandwidth can be adjusted accordingly, wherein the larger the W 2 , the smaller the capacitive coupling bandwidth.
如图12所示，在一个实施例中，第二调节槽130的长度W1＝0mm，第一调节槽120的长度W2＝9mm，第一调节槽120的另一端与介质本体100的侧壁之间的距离W3＝2mm，通过改变第一调节槽120的深度，即调节H的大小，即可对容性耦合带宽相应进行调节，其中，H越小，容性耦合带宽越小。As shown in FIG. 12 , in one embodiment, the length W 1 of the second adjustment groove 130 is 0 mm, the length W 2 of the first adjustment groove 120 is 9 mm, and the distance W 3 between the other end of the first adjustment groove 120 and the side wall of the dielectric body 100 is 2 mm. By changing the depth of the first adjustment groove 120 , that is, adjusting the size of H, the capacitive coupling bandwidth can be adjusted accordingly, wherein the smaller H is, the smaller the capacitive coupling bandwidth is.
如图13示，在一个实施例中，第一调节槽120的长度W2＝9mm，第一调节槽120的深度H＝0.7mm，第一调节槽120的另一端与介质本体100的侧壁之间的距离W3＝2mm，通过改变第二调节槽130的长度，即调节W1的大小，即可对容性耦合带宽相应进行调节，其中，W1越小，容性耦合带宽越小。As shown in FIG. 13 , in one embodiment, the length W 2 of the first adjustment groove 120 is 9 mm, the depth H of the first adjustment groove 120 is 0.7 mm, and the distance W 3 between the other end of the first adjustment groove 120 and the side wall of the dielectric body 100 is 2 mm. By changing the length of the second adjustment groove 130, that is, adjusting the size of W 1 , the capacitive coupling bandwidth can be adjusted accordingly, wherein the smaller W 1 is, the smaller the capacitive coupling bandwidth is.
如图9所示，在一个实施例中，介质本体100包括至少三个并列设置的介质谐振器1000，相邻的两个介质谐振器1000之间设有第一调节槽120，且第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与介质本体100的另一侧壁连通。如此，介质本体100的介质谐振器1000呈线型布置，便于加工，也便于后续通过对第一调节槽120的深度或长度进行调节。As shown in FIG9 , in one embodiment, the dielectric body 100 includes at least three dielectric resonators 1000 arranged in parallel, a first adjustment groove 120 is provided between two adjacent dielectric resonators 1000, and one end of the first adjustment groove 120 is spaced apart from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is connected to the other side wall of the dielectric body 100. In this way, the dielectric resonators 1000 of the dielectric body 100 are arranged in a linear manner, which is convenient for processing and also convenient for subsequent adjustment of the depth or length of the first adjustment groove 120.
在一个实施例中，介质本体100包括三个并列设置的介质谐振器1000，第一个介质谐振器1000与第二个介质谐振器1000之间设有一个第一调节槽120，且该第一调节槽120的一端与介质本体100的一侧壁间隔设置，该第一调节槽120的另一端与介质本体100的另一侧壁连通；第二个介质谐振器1000与第三个介质谐振器1000之间设有一个第一调节槽120，且该第一调节槽120的一端与介质本体100的一侧壁间隔设置，该第一调节槽120的另一端与介质本体100的另一侧壁连通，且该第一调节槽120的另一端的底壁上设有第二调节槽130。In one embodiment, the dielectric body 100 includes three dielectric resonators 1000 arranged in parallel, a first adjustment groove 120 is provided between the first dielectric resonator 1000 and the second dielectric resonator 1000, and one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is communicated with the other side wall of the dielectric body 100; a first adjustment groove 120 is provided between the second dielectric resonator 1000 and the third dielectric resonator 1000, and one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is communicated with the other side wall of the dielectric body 100, and a second adjustment groove 130 is provided on the bottom wall of the other end of the first adjustment groove 120.
在一个实施例中，介质本体100包括四个并列设置的介质谐振器1000，第一个介质谐振器1000与第二个介质谐振器1000之间设有一个第一调节槽120，且该第一调节槽120的一端与介质本体100的一侧壁间隔设置，该第一调节槽120的另一端与介质本体100的另一侧壁连通；第二个介质谐振器1000与第三个介质谐振器1000之间设有一个第一调节槽120，且该第一调节槽120的一端与介质本体100的一侧壁间隔设置，该第一调节槽120的另一端与介质本体100的另一侧壁连通，且该第一调节槽120的另一端的底壁上设有第二调节槽130；第三个介质谐振器1000与第四个介质谐振器1000之间设有一个第一调节槽120，且该第一调节槽120的一端与介质本体100的一侧壁间隔设置，该第一调节槽120的另一端与介质本体100的另一侧壁连通。In one embodiment, the dielectric body 100 includes four dielectric resonators 1000 arranged in parallel, a first adjustment slot 120 is provided between the first dielectric resonator 1000 and the second dielectric resonator 1000, and one end of the first adjustment slot 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment slot 120 is communicated with the other side wall of the dielectric body 100; a first adjustment slot 120 is provided between the second dielectric resonator 1000 and the third dielectric resonator 1000, and the first adjustment slot One end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, the other end of the first adjustment groove 120 is communicated with the other side wall of the dielectric body 100, and a second adjustment groove 130 is provided on the bottom wall of the other end of the first adjustment groove 120; a first adjustment groove 120 is provided between the third dielectric resonator 1000 and the fourth dielectric resonator 1000, and one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is communicated with the other side wall of the dielectric body 100.
如图1至图8所示，在一个实施例中，介质本体100包括四个介质谐振器1000，四个介质谐振器1000呈两行两列设置，且介质本体100上设有用于隔绝四个介质谐振器的隔绝窗口110，相邻的两个介质谐振器1000之间设有第一调节槽120，第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与隔绝窗口110连通。如此，四个介质谐振器1000呈两行两列设置从而形成介质本体100，在介质本体100的中间位置设有用于阻隔介质谐振器1000之间的能量传递的隔绝窗口110，并且，相邻的两个介质谐振器1000之间设置第一调节槽120，使得第一调节槽120的一端与介质本体100的一侧壁间隔设置、第一调节槽120的另一端与隔绝窗口110连通；通过调节第一调节槽120的长度、第一调节槽120的深度，从而相应的调节容性耦合带宽。还可以在第一调节槽120靠近隔绝窗口110的底壁上按第二预设长度开设出第二调节槽130，通过单独调节第一调节槽120的长度、第一调节槽120的深度及第二调节槽130的长度，或同时调节第一调节槽120的长度、第一调节槽120的深度及第二调节槽130的长度，均可以相应的调节容性耦合带宽。再通过电镀的方式在介质本体100的外壁(第一表面140、第二表面150、侧壁、第一调节槽120的内壁、第二调节槽130的内壁、隔绝窗口110的内壁、调节孔1100的内壁)形成导电层200，从而形成电壁，起到电磁屏蔽作用。隔绝窗口110的直径可以根据实际需要进行灵活的调节，从而达到灵活的调节容性耦合带宽的目的。As shown in FIGS. 1 to 8 , in one embodiment, the dielectric body 100 includes four dielectric resonators 1000, which are arranged in two rows and two columns, and an isolation window 110 for isolating the four dielectric resonators is provided on the dielectric body 100, and a first adjustment groove 120 is provided between two adjacent dielectric resonators 1000, one end of the first adjustment groove 120 is spaced from a side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is connected to the isolation window 110. In this way, four dielectric resonators 1000 are arranged in two rows and two columns to form a dielectric body 100, and an isolation window 110 for blocking energy transfer between dielectric resonators 1000 is provided in the middle position of the dielectric body 100, and a first adjustment groove 120 is provided between two adjacent dielectric resonators 1000, so that one end of the first adjustment groove 120 is spaced from a side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is connected to the isolation window 110; by adjusting the length of the first adjustment groove 120 and the depth of the first adjustment groove 120, the capacitive coupling bandwidth can be adjusted accordingly. A second adjustment groove 130 can also be opened on the bottom wall of the first adjustment groove 120 near the isolation window 110 according to a second preset length, and the capacitive coupling bandwidth can be adjusted accordingly by adjusting the length of the first adjustment groove 120, the depth of the first adjustment groove 120 and the length of the second adjustment groove 130 alone, or adjusting the length of the first adjustment groove 120, the depth of the first adjustment groove 120 and the length of the second adjustment groove 130 at the same time. Then, a conductive layer 200 is formed on the outer wall of the dielectric body 100 (the first surface 140, the second surface 150, the side wall, the inner wall of the first adjustment groove 120, the inner wall of the second adjustment groove 130, the inner wall of the isolation window 110, and the inner wall of the adjustment hole 1100) by electroplating, thereby forming an electric wall to play an electromagnetic shielding role. The diameter of the isolation window 110 can be flexibly adjusted according to actual needs, so as to achieve the purpose of flexibly adjusting the capacitive coupling bandwidth.
在一个实施例中，还公开了一种介质滤波器，包括上述任一实施例的容性耦合结构。In one embodiment, a dielectric filter is also disclosed, comprising the capacitive coupling structure of any of the above embodiments.
上述实施例的介质滤波器，在介质本体100相邻的两个介质谐振器1000之间按第一预设长度灵活的开设出预设深度的第一调节槽120，使得第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与介质本体100的另一侧壁连通，即第一调节槽120延伸至介质本体100的另一侧壁，或第一调节槽120的另一端与隔绝窗口110连通。上述实施例的介质滤波器，通过灵活的调节第一调节槽120的开设深度以及第一调节槽120的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽120的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。In the dielectric filter of the above embodiment, a first adjustment groove 120 of a preset depth is flexibly opened between two adjacent dielectric resonators 1000 of the dielectric body 100 according to a first preset length, so that one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is connected to the other side wall of the dielectric body 100, that is, the first adjustment groove 120 extends to the other side wall of the dielectric body 100, or the other end of the first adjustment groove 120 is connected to the isolation window 110. In the dielectric filter of the above embodiment, the capacitive coupling bandwidth can be flexibly adjusted by flexibly adjusting the opening depth of the first adjustment groove 120 and the length of the first adjustment groove 120. Compared with the traditional blind hole form, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove 120 separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
在一个实施例中，还公开了一种双工器，包括上述实施例的介质滤波器。In one embodiment, a duplexer is also disclosed, comprising the dielectric filter of the above embodiment.
上述实施例的双工器，在介质本体100相邻的两个介质谐振器1000之间按第一预设长度灵活的开设出预设深度的第一调节槽120，使得第一调节槽120的一端与介质本体100的一侧壁间隔设置，第一调节槽120的另一端与介质本体100的另一侧壁连通，即第一调节槽120延伸至介质本体100的另一侧壁，或第一调节槽120的另一端与隔绝窗口110连通。上述实施例的双工器，通过灵活的调节第一调节槽120的开设深度以及第一调节槽120的长度，从而能够灵活的对容性耦合带宽进行调节，相比传统的采用盲孔的形式，为了实现小的容性耦合带宽，不需单独对第一调节槽120的深度进行调节，提高了设计的灵活性，降低了生产难度，便于批量化生产，也方便进行后续的生产调试；同时，能够实现相当宽的容性耦合带宽，一致性好，性能良好，节省了生产成本，便于介质滤波器不同零点的控制。In the above-mentioned embodiment, the duplexer is provided with a first adjustment groove 120 of a preset depth flexibly between two adjacent dielectric resonators 1000 of the dielectric body 100 according to a first preset length, so that one end of the first adjustment groove 120 is spaced from one side wall of the dielectric body 100, and the other end of the first adjustment groove 120 is communicated with the other side wall of the dielectric body 100, that is, the first adjustment groove 120 extends to the other side wall of the dielectric body 100, or the other end of the first adjustment groove 120 is communicated with the isolation window 110. In the above-mentioned embodiment, the duplexer can flexibly adjust the capacitive coupling bandwidth by flexibly adjusting the depth of the first adjustment groove 120 and the length of the first adjustment groove 120. Compared with the conventional blind hole, in order to achieve a small capacitive coupling bandwidth, it is not necessary to adjust the depth of the first adjustment groove 120 separately, which improves the design flexibility, reduces the production difficulty, facilitates mass production, and facilitates subsequent production debugging; at the same time, it can achieve a fairly wide capacitive coupling bandwidth, good consistency, good performance, save production costs, and facilitate the control of different zero points of the dielectric filter.
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的约束。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as restrictions on the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
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| CN111224200A (en) * | 2020-03-06 | 2020-06-02 | 广东国华新材料科技股份有限公司 | Capacitive coupling structure and dielectric filter |
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| CN111463526A (en) * | 2020-05-22 | 2020-07-28 | 石家庄市鹿泉区麦特思电子科技有限公司 | Microwave Dielectric Waveguide Filter with Electric Field Diaphragm Coupling |
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