CN210142705U - Dielectric filter assembly and dielectric filter thereof - Google Patents
Dielectric filter assembly and dielectric filter thereof Download PDFInfo
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- CN210142705U CN210142705U CN201921168436.6U CN201921168436U CN210142705U CN 210142705 U CN210142705 U CN 210142705U CN 201921168436 U CN201921168436 U CN 201921168436U CN 210142705 U CN210142705 U CN 210142705U
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Abstract
The utility model discloses a dielectric filter subassembly and dielectric filter thereof, dielectric filter include the medium body, the medium body is including relative first surface and the second surface that sets up, the first surface with the second all is equipped with first conducting layer on the surface, the first surface is equipped with the frequency modulation structure that is used for adjusting the frequency, the second surface is equipped with the port coupling structure that is used for with the inner core electric connection of radio frequency connector, port coupling structure include first conductive part and be used for with first conducting part with the groove is cut off to first conductive part spaced apart, first conductive part with the frequency modulation structure corresponds the setting. The assembly of the dielectric filter and the radio frequency connector is simple, and the production cost is also reduced; therefore, the dielectric filter component adopting the dielectric filter has low assembly difficulty and low production cost.
Description
Technical Field
The utility model relates to a wave filter technical field, concretely relates to dielectric filter subassembly and dielectric filter thereof.
Background
Dielectric waveguide filters typically use rf connectors as signal input and output interfaces. In a traditional connection mode, a blind hole is formed in a medium body and is metalized, a Pin needle (Pin needle) is inserted into the blind hole, and an inner core of a radio frequency connector is tightly connected with the inner side wall of the metalized blind hole through the Pin needle. The assembly process is complicated due to the traditional mode, and meanwhile, the production cost is also improved.
SUMMERY OF THE UTILITY MODEL
Based on the dielectric filter assembly and the dielectric filter thereof, the assembly of the dielectric filter and the radio frequency connector is simple, and the production cost is reduced; therefore, the dielectric filter component adopting the dielectric filter has low assembly difficulty and low production cost.
The technical scheme is as follows:
in one aspect, a dielectric filter is provided, including a dielectric body, where the dielectric body includes a first surface and a second surface that are arranged opposite to each other, the first surface and the second surface are both provided with a first conductive layer, the first surface is provided with a frequency adjusting structure for adjusting frequency, the second surface is provided with a port coupling structure for electrically connecting with an inner core of a radio frequency connector, the port coupling structure includes a first conductive portion and a partition groove for partitioning the first conductive layer from the first conductive portion, and the first conductive portion is arranged corresponding to the frequency adjusting structure.
In the dielectric filter, a frequency adjusting structure for adjusting the frequency of the dielectric filter is arranged on the first surface of the dielectric body, and a port coupling structure is arranged on the second surface opposite to the first surface and spaced from the first surface, wherein the port coupling structure comprises a first conductive part and a separation groove, and the first conductive part is separated from the first conductive layer on the second surface by the separation groove; and attaching the circuit board to the second surface of the medium body, and electrically connecting the inner core of the radio frequency connector with the first conductive part through the mounting part arranged on the circuit board. According to the dielectric filter, the inner core of the radio frequency connector can be electrically connected with the first conductive part only by utilizing the mounting part of the circuit board, so that the radio frequency connector, the circuit board and the dielectric filter can be simply and conveniently assembled; meanwhile, compared with the traditional mode that the inner core of the radio frequency connector is connected with the inner side wall of the blind hole by using the Pin needle, the inner core of the radio frequency connector can be electrically connected with the first conductive part by omitting the Pin needle, and the production cost is reduced.
The technical solution is further explained below:
in one embodiment, the area of the isolation groove and/or the first conductive portion is adjustable. Therefore, the coupling delay bandwidth of the port can be simply and conveniently adjusted by adjusting the area of the isolation groove and/or the area of the first conductive part.
In one embodiment, the frequency adjustment structure is provided as a first adjustment hole, and the position of the first adjustment hole is arranged corresponding to the position of the first conductive part.
In one embodiment, the port coupling structure further includes a second adjusting hole recessed relative to the second surface, a second conductive layer is disposed on an inner wall of the second adjusting hole, and the second conductive layer is electrically connected to the first conductive portion.
In one embodiment, the second adjustment hole is adjustable in depth and/or size. In this way, the coupling delay bandwidth of the port can be adjusted by adjusting the depth and/or size of the second adjusting hole.
In one embodiment, the first conductive part is provided with a circular, elliptical or polygonal outline; the outline of the partition groove is set to be circular, oval or polygonal. In this way, the outline shape of the first conductive part and the outline shape of the isolation groove can be flexibly adjusted according to actual use requirements.
In one embodiment, the cross-sectional area of the first conductive portion is greater than or equal to the cross-sectional area of the inner core of the radio frequency connector. Thus, the inner core can be fully contacted with the first conductive part.
On the other hand, the dielectric filter assembly comprises a circuit board, a radio frequency connector and the dielectric filter, wherein the circuit board is attached to the second surface, and the circuit board is provided with an installation part used for enabling an inner core of the radio frequency connector to be electrically connected with the first conductive part.
In the dielectric filter assembly, a frequency adjusting structure for adjusting the frequency of the dielectric filter is arranged on the first surface of the dielectric body, and a port coupling structure is arranged on the second surface opposite to the first surface and spaced from the first surface, wherein the port coupling structure comprises a first conductive part and a separation groove, and the first conductive part is separated from the first conductive layer by the separation groove; and attaching the circuit board to the second surface of the medium body, and electrically connecting the inner core of the radio frequency connector with the first conductive part through the mounting part arranged on the circuit board. According to the dielectric filter assembly, the inner core of the radio frequency connector can be electrically connected with the first conductive part only by utilizing the mounting part of the circuit board, so that the radio frequency connector, the circuit board and the dielectric filter can be simply and conveniently assembled; meanwhile, compared with the traditional form that the inner core of the radio frequency connector is connected with the inner side wall of the blind hole by using the Pin needle, the electrical connection between the inner core of the radio frequency connector and the first conductive part can be realized by omitting the Pin needle, and the production cost is reduced; and the area of the isolating groove and the area of the first conductive part can be flexibly adjusted according to actual needs, compared with the traditional form that the inner core is matched with the inner side wall of the metallized blind hole by adopting a Pin needle, the adjustment of the coupling delay bandwidth of the port can be realized only by simply and flexibly adjusting the proportional relation between the area of the isolating groove and the area of the first conductive part, the debugging difficulty is low, the debugging effect is strong, the repeated debugging can be realized, the consistency is good, and the mass production is adapted.
In one embodiment, the mounting portion is configured as a first through hole, and the inner core of the rf connector can be electrically connected to the first conductive portion after passing through the first through hole.
In one embodiment, the mounting portion is configured as a via hole and a conductive body passing through the via hole, one end of the conductive body is electrically connected to the first conductive portion, and the other end of the conductive body is electrically connected to the inner core.
Drawings
Fig. 1 is a schematic structural view of a first surface of a dielectric filter of an embodiment;
fig. 2 is a schematic structural view of a second surface of the dielectric filter shown in fig. 1;
FIG. 3 is a cross-sectional view of one embodiment of the dielectric filter of FIG. 1 taken in the direction A-A;
fig. 4 is a partially enlarged view of a portion B of the dielectric filter shown in fig. 3;
fig. 5 is a cross-sectional view of another embodiment in the direction a-a of the dielectric filter shown in fig. 1;
fig. 6 is a partially enlarged view of a portion C of the dielectric filter shown in fig. 5;
fig. 7 is a cross-sectional view of still another embodiment in the a-a direction of the dielectric filter shown in fig. 1;
fig. 8 is a partially enlarged view of a portion D of the dielectric filter shown in fig. 7.
Description of reference numerals:
100. the dielectric substrate comprises a dielectric body, 110, a first surface, 120, a first adjusting hole, 130, a second surface, 140, a first conductive part, 150, a separation groove, 160, a first conductive layer, 170, a second adjusting hole, 180, a second conductive layer, 200, a circuit board, 210, a first through hole, 220, a through hole, 230, a conductive body, 300, a radio frequency connector, 310 and an inner core.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on," "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured" to, or "fixedly coupled" to another element, it can be removably secured or non-removably secured to the other element. When an element is referred to as being "connected," "pivotally connected," to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, the terms "first", "second", "third", and the like do not denote any particular quantity or order, but rather are used to distinguish one name from another.
As shown in fig. 1 to 3, in an embodiment, a dielectric filter is provided, which includes a dielectric body 100, the dielectric body 100 includes a first surface 110 and a second surface 130 that are oppositely disposed, each of the first surface 110 and the second surface 130 is provided with a first conductive layer 160, the first surface 110 is provided with a frequency adjusting structure for adjusting a frequency, the second surface 130 is provided with a port coupling structure for electrically connecting with an inner core 310 of a radio frequency connector 300, the port coupling structure includes a first conductive portion 140 and a blocking groove 150 for blocking the first conductive layer 160 from the first conductive portion 140, and the first conductive portion 140 is disposed corresponding to the frequency adjusting structure.
In the dielectric filter of the above embodiment, a frequency adjustment structure for adjusting the frequency of the dielectric filter is disposed on the first surface 110 of the dielectric body 100, and a port coupling structure is disposed on the second surface 130 spaced opposite to the first surface 110, wherein the port coupling structure includes the first conductive part 140 and the isolation groove 150, and the first conductive part 140 is isolated from the first conductive layer 160 on the second surface 130 by the isolation groove 150; the circuit board 200 is attached to the second surface 130 of the dielectric body 100, and the inner core 310 of the rf connector 300 is electrically connected to the first conductive part 140 through the mounting part disposed on the circuit board 200. In the dielectric filter of the above embodiment, the inner core 310 of the rf connector 300 can be electrically connected to the first conductive part 140 only by using the mounting part of the circuit board 200, so that the assembly among the rf connector 300, the circuit board 200 and the dielectric filter can be simply and conveniently realized; meanwhile, compared with the traditional form that the inner core 310 of the radio frequency connector 300 is connected with the inner side wall of the blind hole by using a Pin needle, the electrical connection between the inner core 310 of the radio frequency connector 300 and the first conductive part 140 can be realized by omitting the Pin needle, and the production cost is reduced.
It should be noted that, the first conductive part 140 and the isolation groove 150 are disposed on the second surface 130, the isolation groove 150 may be formed by removing the first conductive layer 160 according to a predetermined shape on the second surface 130 of the dielectric body 100, and then the first conductive part 140 is disposed in the isolation groove 150; or, a circle of annular first conductive layer 160 may be removed in the opening region of the isolation groove 150 on the second surface 130 of the dielectric body 100 according to a predetermined shape, so as to form the isolation groove 150 and the first conductive part 140, and at this time, the remaining first conductive layer 160 in the isolation groove 150 is used as the first conductive part 140, so that the process is simple, the material is saved, and the production cost is reduced. The dielectric material of the dielectric body 100 is selected from a high dielectric constant material, and can be manufactured in an integral molding manner, so that the dielectric body not only can play a role in signal transmission, but also can play a role in structural support; preferably, the ceramic dielectric filter is made of a ceramic dielectric material with a high dielectric constant, and can be manufactured in a die-casting mode, so that the size and the weight of the whole dielectric filter can be remarkably reduced. The first conductive layer 160 of the dielectric body 100 may be formed by electroplating to perform an electromagnetic shielding function, and the first conductive layer 160 may be a silver plated layer or other metal layer. The corresponding arrangement of the first conductive part 140 and the frequency adjustment structure means that after the frequency adjustment structure is arranged on the first surface 110, the first conductive part 140 is arranged in the projection area of the frequency adjustment structure on the second surface 130.
In one embodiment, the area of the partition groove 150 is adjustable. Thus, the coupling delay bandwidth of the port is correspondingly adjusted by adjusting the area of the blocking slot 150 until the coupling delay bandwidth of the port is adjusted to a required value, so as to adjust the overall performance index of the dielectric filter.
In one embodiment, the area of the first conductive portion 140 is adjustable. Thus, by adjusting the area of the first conductive part 140, the coupling delay bandwidth of the port is correspondingly adjusted until the coupling delay bandwidth of the port is adjusted to a required value, so as to adjust the overall performance index of the dielectric filter.
Of course, in other embodiments, the area of the partition groove 150 and the area of the first conductive portion 140 may be adjusted simultaneously. Therefore, the coupling delay bandwidth of the port can be adjusted correspondingly more flexibly until the coupling delay bandwidth of the port is adjusted to a required value, and the function of adjusting the overall performance index of the dielectric filter is achieved.
Note that the area of the partition groove 150 can be adjusted by adjusting the area of the first conductive layer 160 removed between the inner sidewall of the partition groove 150 and the outer sidewall of the first conductive portion 140; for example, when the outline of the partition groove 150 is a circular ring shape and the outline of the first conductive part 140 is a circular shape, the outer diameter of the partition groove 150 can be adjusted individually (e.g., D in fig. 3 to 8)1Shown) or adjusting the diameter of the first conductive portion 140 alone (as shown in D of fig. 3-8)2Shown), the implementation can also be achieved by adjusting the outer diameter of the partition groove 150 and the diameter of the first conductive part 140 at the same time, wherein the making end of the ratio of the outer diameter of the partition groove 150 to the diameter of the first conductive part 140 is preferably 50 Ω, and of course, may also be according to the actual use requirement instead of 50 Ω; when the outline of the partition groove 150 is a square frame shape, for example, a rectangular shape, of the first conductive part 140When the outline is also rectangular, the side length of the isolation groove 150 or the side length of the first conductive part 140 can be adjusted independently, or the side length of the isolation groove 150 and the side length of the first conductive part 140 can be adjusted simultaneously; it is sufficient that the removal area of the first conductive layer 160 between the inner wall of the isolation groove 150 and the outer wall of the first conductive part 140 can be changed. The area of the isolation groove 150 and the area of the first conductive part 140 can be flexibly adjusted according to actual needs, compared with the traditional form that the inner core 310 is matched with the inner side wall of the metallized blind hole by adopting a Pin needle, the adjustment of the coupling delay bandwidth of the port can be realized only by simply and flexibly adjusting the proportional relation between the area of the isolation groove 150 and the area of the first conductive part 140, the debugging difficulty is low, the debugging effect is strong, the consistency can be repeatedly debugged, and the mass production is adapted.
The frequency adjustment structure may be provided as a groove type, a hole type, or other structure capable of adjusting the frequency of the dielectric filter.
As shown in fig. 1, 3 to 8, in one embodiment, the frequency adjustment structure is provided as a first adjustment hole 120, and the position of the first adjustment hole 120 is provided corresponding to the position of the first conductive part 140. In this way, the first adjusting hole 120 can be used to adjust the frequency of the dielectric filter accordingly, so that the dielectric filter can meet the use requirement. Wherein the first surface 110 and the inner wall of the first adjusting hole 120 are also provided with a first conductive layer 160, respectively.
Further, the depth of the first regulation hole 120 (see H of fig. 3 to 8)1Shown) is adjustable. In this way, the coupling delay bandwidth of the port can be adjusted by changing the depth of the first adjusting hole 120, and the flexibility of adjustment and design is further enhanced. Of course, the area of the partition groove 150 or the depth of the first adjusting hole 120 may be adjusted independently, or the area of the partition groove 150 and the depth of the first adjusting hole 120 may be adjusted simultaneously, and it is only necessary to satisfy that the coupling delay bandwidth of the port can be adjusted according to the actual use requirement.
As shown in fig. 7 and fig. 8, on the basis of any of the above embodiments, the port coupling adjustment structure further includes a second adjustment hole 170 recessed relative to the second surface 130, an inner wall of the second adjustment hole 170 is provided with a second conductive layer 180, and the second conductive layer 180 is electrically connected to the first conductive portion 140. Thus, the second adjusting hole 170 is formed in the first conductive part 140 toward the interior of the dielectric body 100, and the second adjusting hole 170 can also adjust the coupling delay bandwidth of the port accordingly, so that the flexibility of adjustment and design is further enhanced, and the use requirement is met.
As shown in FIGS. 7 and 8, in one embodiment, the depth of the second adjustment hole 170 (see H in FIGS. 7 and 8)2Shown) is adjustable. In this way, the coupling delay bandwidth of the port can be adjusted by changing the depth of the second adjusting hole 170, and the flexibility of adjustment and design is further enhanced. Of course, the area of the partition groove 150, the depth of the first adjusting hole 120, or the depth of the second adjusting hole 170 may be adjusted independently, or the area of the partition groove 150, the depth of the first adjusting hole 120, and the depth of the second adjusting hole 170 may be adjusted simultaneously, and it is only necessary to satisfy the requirement that the coupling delay bandwidth of the port can be adjusted according to the actual use requirement.
As shown in FIG. 8, in one embodiment, the second adjustment aperture 170 is sized (e.g., D of FIG. 8)3Shown) is adjustable. Therefore, the size of the second adjusting hole 170 can be changed, and the diameter of the second adjusting hole 170 can be adjusted, so that the coupling delay bandwidth of the port can be adjusted, and the flexibility of adjustment and design is further enhanced. Of course, the area of the partition groove 150, the depth of the first adjusting hole 120, the depth of the second adjusting hole 170, or the size of the second adjusting hole 170 may be adjusted independently, or the area of the partition groove 150, the depth of the first adjusting hole 120, the depth of the second adjusting hole 170, and the size of the second adjusting hole 170 may be adjusted at the same time, and it is only necessary to satisfy the requirement that the coupling delay bandwidth of the port can be adjusted according to the actual use requirement.
In any of the above embodiments, the outline of the first conductive part 140 is configured to be circular, elliptical or polygonal. In this way, the profile of the first conductive portion 140 can be flexibly processed or designed according to the actual use requirement or process requirement to adapt to the use requirement. The profile of the first conductive portion 140 is preferably circular to facilitate processing and subsequent adjustment of the coupling delay bandwidth of the port by changing the diameter. When the outline of the first conductive part 140 is polygonal, it may be rectangular, square, pentagonal, or the like.
On the basis of any of the above embodiments, the contour of the partition groove 150 is configured to be circular, elliptical or polygonal. In this way, the profile of the partition groove 150 can be flexibly machined or designed according to the actual use requirement or the process requirement to adapt to the use requirement. The contour of the isolation slot 150 is preferably circular for ease of machining and subsequent adjustment of the coupling delay bandwidth of the port by changing the outer diameter. When the outline of the partition groove 150 is polygonal, it may have a rectangular shape, a square shape, a pentagonal shape, or the like.
It should be noted that the outline of the isolation groove 150 may be the same as or different from the outline of the first conductive part 140, and it is only necessary to provide that the inner side wall of the isolation groove 150 and the outer side wall of the first conductive part 140 are oppositely spaced, and the coupling delay bandwidth of the port can be adjusted by adjusting the ratio of the area of the isolation groove 150 to the area of the first conductive part 140. The contour of the partition groove 150 is preferably the same as the contour of the first conductive portion 140, which facilitates processing and also facilitates adjustment of the area of the surrounding region between the inner wall of the partition groove 150 and the outer wall of the first conductive portion 140. The center of the blocking slot 150 may coincide with the center of the first conductive part 140, thus facilitating accurate adjustment of the coupling delay bandwidth of the port; or may be misaligned, thus facilitating processing.
In any of the above embodiments, the cross-sectional area of the first conductive portion 140 is greater than or equal to the cross-sectional area of the inner core 310 of the rf connector 300. Thus, the inner core 310 of the rf connector 300 can be fully contacted with the first conductive part 140, so as to ensure the reliability of connection; meanwhile, the assembly difficulty is reduced, and the mass production is facilitated. The cross-sectional area of first conductive portion 140 is preferably greater than the cross-sectional area of inner core 310, which also facilitates subsequent adjustment of the cross-sectional area of first conductive portion 140 to adjust the coupling delay bandwidth of the port. Of course, in other embodiments, the cross-sectional area of the first conductive part 140 may be smaller than the cross-sectional area of the inner core 310 of the rf connector 300, and it is only necessary to electrically connect the first conductive part 140 and the inner core 310 of the rf connector 300.
As shown in fig. 3 to 8, in an embodiment, a dielectric filter assembly is further provided, which includes a circuit board 200, a radio frequency connector 300, and the dielectric filter of any of the above embodiments, wherein the circuit board 200 is disposed to be attached to the second surface 130, and the circuit board 200 is provided with a mounting portion for electrically connecting the inner core 310 of the radio frequency connector 300 and the first conductive portion 140.
In the dielectric filter assembly of the above embodiment, a frequency adjustment structure for adjusting the frequency of the dielectric filter is disposed on the first surface 110 of the dielectric body 100, and a port coupling structure is disposed on the second surface 130 spaced opposite to the first surface 110, wherein the port coupling structure includes the first conductive part 140 and the isolation groove 150, and the first conductive part 140 on the second surface 130 is isolated from the first conductive layer 160 by the isolation groove 150; the circuit board 200 is attached to the second surface 130 of the dielectric body 100, and the inner core 310 of the rf connector 300 is electrically connected to the first conductive part 140 through the mounting part disposed on the circuit board 200. In the dielectric filter assembly of the above embodiment, the inner core 310 of the rf connector 300 can be electrically connected to the first conductive part 140 only by using the mounting part of the circuit board 200, so that the assembly among the rf connector 300, the circuit board 200 and the dielectric filter can be simply and conveniently realized; meanwhile, compared with the traditional form that the inner core 310 of the radio frequency connector 300 is connected with the inner side wall of the blind hole by using a Pin needle, the inner core 310 of the radio frequency connector 300 can be electrically connected with the first conductive part 140 by omitting the Pin needle, so that the production cost is reduced; in addition, the area of the partition groove 150 and the area of the first conductive part 140 can be flexibly adjusted according to actual needs, compared with the traditional form of matching the inner core 310 with the inner side wall of the metallized blind hole by adopting a Pin needle, the adjustment of the coupling delay bandwidth of the port can be realized only by simply and flexibly adjusting the proportional relation between the area of the partition groove 150 and the area of the first conductive part 140, the debugging difficulty is low, the debugging effect is strong, the repeated debugging can be realized, the consistency is good, and the mass production is suitable.
It should be noted that, attaching the circuit board 200 to the second surface 130 of the dielectric body 100 can attach a corresponding surface to the circuit board 200, and then fixedly connect the circuit board 200 and the dielectric body 100 by soldering.
The inner core 310 of the rf connector 300 is electrically connected to the first conductive part 140 by using the mounting part on the circuit board 200, which may be a through hole formed on the circuit board 200, so that the inner core 310 of the rf connector 300 can directly contact with the first conductive part 140 after passing through the through hole to realize electrical connection; the mounting portion may be an intermediate conductive medium, and the inner core 310 is indirectly electrically connected to the first conductive portion 140 through the action of the intermediate conductive medium; it is only necessary to electrically connect the inner core 310 and the first conductive portion 140.
As shown in fig. 3 and 4, in one embodiment, the mounting portion is a first through hole 210, and the inner core 310 of the rf connector 300 can be electrically connected to the first conductive portion 140 after passing through the first through hole 210. Thus, after the inner core 310 of the rf connector 300 passes through the first through hole 210, the end surface of the inner core 310 is attached to and abutted against the side surface of the first conductive part 140, and the electrical connection between the inner core 310 and the first conductive part 140 can be reliably realized without using a Pin needle, thereby simplifying the assembly process and saving the cost.
As shown in fig. 5 to 8, in one embodiment, the mounting portion is configured as a via 220 and a conductive body 230 passing through the via 220, one end of the conductive body 230 is electrically connected to the first conductive portion 140, and the other end of the conductive body 230 is electrically connected to the inner core 310. Thus, the circuit board 200 is attached to the second surface 130 of the dielectric body 100, so that one end of the conductive body 230 is attached to and contacted with the first conductive part 140, thereby achieving the electrical connection between the conductive body 230 and the first conductive part 140; then, the inner core 310 of the rf connector 300 is fixedly arranged on the circuit board 200, so that the inner core 310 of the rf connector 300 is in contact with the other end of the conductor 230, thereby realizing the electrical connection between the inner core 310 and the conductor 230; further, the electrical connection between the inner core 310 and the first conductive portion 140 is realized by the conductive body 230, which can meet the requirements of different circuit boards 200. The conductive body 230 may be a metallization layer disposed in the via hole 220, or may be a surface mount pad disposed in the via hole 220, as long as the inner core 310 and the first conductive part 140 can be electrically connected. And the inner core 310 can be reliably electrically connected with the first conductive part 140 without adopting a Pin needle, so that the cost is saved. When the conductor 230 is a surface mount pad, the size and shape of the end of the surface mount pad may or may not be the same as the size and shape of the first conductive part 140; preferably, the same, so, the laminating is inseparabler and abundant, and the electrically conductive effect is good.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples represent only a few embodiments of the present invention, which are described in detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A dielectric filter is characterized by comprising a dielectric body, wherein the dielectric body comprises a first surface and a second surface which are arranged oppositely, first conducting layers are arranged on the first surface and the second surface respectively, a frequency adjusting structure for adjusting frequency is arranged on the first surface, a port coupling structure for electrically connecting with an inner core of a radio frequency connector is arranged on the second surface, the port coupling structure comprises a first conducting portion and a separating groove for separating the first conducting layer from the first conducting portion, and the first conducting portion and the frequency adjusting structure are arranged correspondingly.
2. The dielectric filter of claim 1, wherein the area of the isolation groove and/or the first conductive portion is adjustable.
3. The dielectric filter according to claim 1, wherein the frequency adjustment structure is provided as a first adjustment hole, and a position of the first adjustment hole is provided corresponding to a position of the first conductive part.
4. The dielectric filter according to any one of claims 1 to 3, wherein the port coupling structure further comprises a second adjustment hole recessed with respect to the second surface, an inner wall of the second adjustment hole is provided with a second conductive layer, and the second conductive layer is electrically connected to the first conductive portion.
5. A dielectric filter as claimed in claim 4, wherein the second adjustment holes are adjustable in depth and/or size.
6. A dielectric filter as recited in any one of claims 1 to 3, wherein the first conductive part is provided with a circular, elliptical or polygonal outline; the outline of the partition groove is set to be circular, oval or polygonal.
7. A dielectric filter as recited in any one of claims 1 to 3, wherein the cross-sectional area of the first conductive portion is greater than or equal to the cross-sectional area of the inner core of the radio frequency connector.
8. A dielectric filter assembly comprising a circuit board, a radio frequency connector, and a dielectric filter according to any one of claims 1 to 7, wherein the circuit board is disposed in close contact with the second surface, and the circuit board is provided with a mounting portion for electrically connecting an inner core of the radio frequency connector with the first conductive portion.
9. The dielectric filter assembly of claim 8, wherein the mounting portion is configured as a first through hole, and wherein the inner core of the rf connector is electrically connectable to the first conductive portion after passing through the first through hole.
10. The dielectric filter assembly of claim 8, wherein the mounting portion is configured as a via and a conductor passing through the via, one end of the conductor being electrically connected to the first conductive portion, and the other end of the conductor being electrically connected to the inner core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921168436.6U CN210142705U (en) | 2019-07-23 | 2019-07-23 | Dielectric filter assembly and dielectric filter thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921168436.6U CN210142705U (en) | 2019-07-23 | 2019-07-23 | Dielectric filter assembly and dielectric filter thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400993A (en) * | 2019-07-23 | 2019-11-01 | 京信通信技术(广州)有限公司 | Dielectric filter device assembly and its dielectric filter |
| CN111478002A (en) * | 2020-05-29 | 2020-07-31 | 京信射频技术(广州)有限公司 | Dielectric waveguide filter and communication device |
-
2019
- 2019-07-23 CN CN201921168436.6U patent/CN210142705U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400993A (en) * | 2019-07-23 | 2019-11-01 | 京信通信技术(广州)有限公司 | Dielectric filter device assembly and its dielectric filter |
| CN111478002A (en) * | 2020-05-29 | 2020-07-31 | 京信射频技术(广州)有限公司 | Dielectric waveguide filter and communication device |
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