CN218351699U - Communication device and filter - Google Patents
Communication device and filter Download PDFInfo
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- CN218351699U CN218351699U CN202222933034.9U CN202222933034U CN218351699U CN 218351699 U CN218351699 U CN 218351699U CN 202222933034 U CN202222933034 U CN 202222933034U CN 218351699 U CN218351699 U CN 218351699U
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Abstract
The utility model relates to a communication equipment and wave filter can form resonance structure in order additionally to increase a set of zero point through first resonance minor matters and second resonance minor matters, need not increase the improvement that extra minor matters number can realize the suppression to, utilize the PCB body as supporting, do not need extra medium to support, not only can alleviate the weight of wave filter, can reduce the material cost moreover.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a communication equipment and wave filter.
Background
With the rapid development of mobile communication technology, higher and higher requirements are also put forward on the index performance of devices such as filters and the like. Conventional filters typically employ a metal plate supplemented with a dielectric support, resulting in an increase in both weight and cost of the overall filter.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a communication device and a filter for solving the problem of increase in weight and cost.
The technical scheme is as follows:
in one aspect, a filter is provided, including:
a PCB body having first and second oppositely spaced sides;
the main transmission line comprises a first strip line and a second strip line which are oppositely arranged and electrically connected, the first strip line is arranged on the first side surface, and the second strip line is arranged on the second side surface;
the first resonance branch knot is arranged on the first side face and is electrically connected with the first live wire; and
the second resonance branch knot is arranged on the second side face and is arranged at an interval with the second strip line;
the first resonance branch and the second resonance branch are arranged on the same side of the main transmission line, the first resonance branch is close to one side of the first strip line and is in coupling connection with the second resonance branch, one side of the first strip line, which is far away from the first resonance branch, is electrically connected with the second resonance branch, and an earthing end and a suspension end which are arranged at intervals are arranged on one side of the first resonance branch, which is far away from the first strip line.
The technical solution is further explained below:
in one embodiment, the first resonant branch includes a first branch and a second branch, one side of the first branch is electrically connected to the first strip line, the other side of the first branch is spaced from the second branch, the ground terminal and the free end are disposed on one side of the second branch away from the first branch, the first branch is coupled to the second resonant branch, and the second branch is electrically connected to the second resonant branch.
In one embodiment, a projection of the first branch on the second side surface and a projection of the second branch on the second side surface partially coincide with a projection of the second resonant branch on the second side surface.
In one embodiment, the PCB body is provided with at least one first metalized via, and the second stub is electrically connected to the second resonance stub through the first metalized via.
In one embodiment, the second branch includes a first branch and a second branch arranged at an included angle, one end of the first branch is electrically connected to one end of the second branch and arranged at an interval with the first branch, the other end of the first branch is provided with the grounding terminal, the other end of the second branch is provided with the suspension terminal, and the first branch and the second branch are both electrically connected to the second resonance branch.
In one embodiment, the included angle between the first branch segment and the second branch segment is alpha, and 0 ° < alpha < 180 °.
In one embodiment, the number of the second branches is at least two, one end of each of the second branches is electrically connected to one end of the first branch, the other end of each of the second branches is provided with the suspension end, and each of the second branches is electrically connected to the second resonant branch.
In one embodiment, the first branch is electrically connected to the second resonant branch through at least one of the first metalized vias, and the second branch is electrically connected to the second resonant branch through at least one of the first metalized vias.
In one embodiment, the PCB body is provided with at least one second metalized via along an extending direction of the main transmission line, and the first strip line and the second strip line are electrically connected through the second metalized via.
In another aspect, a communication device is provided, comprising the filter.
The communication equipment and the filter of the embodiment can form the resonance structure through the first resonance branch and the second resonance branch to additionally increase a group of zero points, the suppression can be improved without increasing additional branches, and the PCB body is used as a support without additional medium support, so that the weight of the filter can be reduced, and the material cost can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a filter according to one embodiment;
FIG. 2 is a schematic diagram of the filter of FIG. 1 from a perspective;
fig. 3 is a schematic structural diagram of the filter of fig. 1 from another view angle.
Description of reference numerals:
100. a PCB body; 110. a first side surface; 120. a second side surface; 130. a second metallized via; 140. a first metallized via; 200. a main transmission line; 210. a first strip line; 220. a second strip line; 300. a resonant structure; 310. a first resonant stub; 311. a first branch section; 312. a second branch knot; 3121. a first branch knot; 3122. a second branch node; 313. a ground terminal; 314. a free end; 320. a second resonant stub.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
As shown in fig. 1 to 3, in one embodiment, a filter having a filtering function is provided, and includes a PCB (Printed Circuit Board) body 100, a main transmission line 200, a first resonance branch 310, and a second resonance branch 320.
The PCB body 100 may serve as a main supporting structure, and the PCB body 100 has a first side 110 and a second side 120 spaced apart from each other.
As shown in fig. 2, the main transmission line 200 may serve as a main transmission path of current, the main transmission line 200 includes a first strip line 210 and a second strip line 220 that are disposed opposite to each other, the first strip line 210 and the second strip line 220 are electrically connected to each other, the first strip line 210 is disposed on the first side surface 110 by plating or the like, the second strip line 220 is disposed on the second side surface 120 by plating or the like, that is, the first strip line 210 and the second strip line 220 are disposed on two opposite side surfaces of the PCB body 100, respectively.
Both the first strip line 210 and the second strip line 220 may be metal sheets such as copper foil and aluminum foil. The electrical connection between the first strip line 210 and the second strip line 220 can be realized by a form of a metalized via.
Specifically, the PCB body 100 is provided with at least one second metalized via 130 along the extending direction of the main transmission line 200, so that the first strip line 210 and the second strip line 220 are electrically connected through the second metalized via 130, and the PCB body 100 is used as a support, thereby avoiding additional electrical connection components, simplifying the structure, and facilitating the processing.
The actual number of the second metalized vias 130 can be flexibly adjusted or designed according to actual use requirements, and may be, for example, one, two, three or more.
The first resonant branch 310 is disposed on the first side surface 110 by means of adhesion, pressure welding, and the like, and the first resonant branch 310 is electrically connected to the first strip line 210, that is, one side of the first resonant branch 310 is in contact with the first strip line 210 to achieve electrical conduction.
Alternatively, the first resonant stub 310 may be a metal sheet such as a copper foil or an aluminum foil.
The second resonant branch 320 is disposed on the second side surface 120 by bonding, crimping, or the like, and the second resonant branch 320 is disposed at an interval from the second strip line 220, that is, a gap exists between one side of the second resonant branch 320 and the second strip line 220 to achieve the interval.
Alternatively, the second resonant branch 320 may be a metal sheet such as a copper foil or an aluminum foil.
It should be noted that the interval between the second resonant branch 320 and the second strip line 220 can be flexibly designed or adjusted according to actual design or use requirements, and it is only necessary to satisfy that mutual coupling does not occur or is very small between the second strip line 220 and the second resonant branch 320.
Meanwhile, the first resonance branch 310 and the second resonance branch 320 are both disposed on the same side of the main transmission line 200, one side of the first resonance branch 310 close to the first strip line 210 is coupled with the second resonance branch 320, one side of the first resonance branch 310 far away from the first strip line 210 is electrically connected with the second resonance branch 320, and one side of the first resonance branch 310 far away from the first strip line 210 is provided with a grounding terminal 313 and a suspension terminal 314 which are disposed at intervals. Thus, the first resonant stub 310 and the second resonant stub 320 can be matched with each other to form the resonant structure 300, so that a set of zero points can be additionally added, and the suppression can be further improved.
In the conventional filter, in order to improve the suppression, the number of branches is generally required to be increased, so that the medium support is required to be increased, and the metal plate is combined, so that the weight of the conventional filter is increased, and the material cost is increased. In the filter of the embodiment of the application, the resonant structure 300 can be formed by the first resonant branch 310 and the second resonant branch 320 to additionally add a group of zero points, and the improvement of suppression can be realized without adding additional branches, and the PCB body 100 is used as a support without additional medium support, so that not only the weight of the filter can be reduced, but also the material cost can be reduced.
It should be noted that, as shown in fig. 1, one main transmission line 200 may be correspondingly provided with a plurality of resonant structures 300, that is, a plurality of resonant structures 300 are provided along the extending direction of the main transmission line 200. In addition, the filter may also include other auxiliary structures, which are not described herein since they may belong to the prior art.
Optionally, as shown in fig. 2, the first resonant stub 310 includes a first stub 311 and a second stub 312. One side of the first branch 311 is electrically connected to the first strip line 210, the other side of the first branch 311 is spaced from the second branch 312, and a ground end 313 and a suspension end 314 are disposed on a side of the second branch 312 away from the first branch 311. The first branch 311 is coupled to the second resonant branch 320, and the second branch 312 is electrically connected to the second resonant branch 320. Therefore, the current of the first strip line 210 flows into the first branch 311, and then is coupled to the second resonance branch 320 through the coupling of the first branch 311 and the second resonance branch 320 to generate an induced current, and then is electrically connected between the second resonance branch 320 and the second branch 312, so that the induced current flows into the second branch 312, and further the first branch 311, the second branch 312 and the second resonance branch 320 are mutually matched to form the resonance structure 300, thereby additionally adding a set of zero points, and further improving the suppression. Moreover, the first branch 311 is coupled to the second resonant branch 320, and the second branch 312 is electrically connected to the second resonant branch 320, so that a capacitor structure and an inductor structure can be formed, which is beneficial to additionally increasing a set of zero points, and further can improve the suppression.
It should be noted that, the interval between the first branch 311 and the second branch 312 can be flexibly designed or adjusted according to actual design or use requirements, and only the first branch 311 and the second branch 312 need to have little or no mutual coupling.
Further, the projection of the first branch 311 on the second side surface 120 and the projection of the second branch 312 on the second side surface 120 are overlapped with the projection of the second resonant branch 320 on the second side surface 120, so that the first branch 311 and a part of the second resonant branch 320 can be coupled to form a capacitor structure, the second branch 312 and a part of the second resonant branch 320 can be electrically connected to form an inductor structure, and further the first branch 311, the second branch 312 and the second resonant branch 320 are matched with each other to form the resonant structure 300.
It should be noted that the partial overlap means that the projection of the first branch 311 on the second side surface 120 partially overlaps the projection of the second resonant branch 320 on the second side surface 120; meanwhile, the projection of the second branch 312 on the second side surface 120 is partially overlapped with the projection of the second resonant branch 320 on the second side surface 120.
The electrical connection between the second branch 312 and the second resonant branch 320 can be realized by a metallized via.
Specifically, as shown in fig. 2 and 3, the PCB body 100 is provided with at least one first metalized via 140, and the second branch 312 is electrically connected to the second resonant branch 320 through the first metalized via 140. Thus, the electrical connection between the second branch 312 and the second resonance branch 320 is realized through the first metalized via hole 140, the PCB body 100 is fully utilized as a support, an additional electrical connection part is avoided, the structure is simplified, and the processing is also facilitated.
Further, as shown in fig. 2, the second branch node 312 includes a first branch node 3121 and a second branch node 3122 disposed at an included angle. One end of the first branch 3121 is electrically connected to one end of the second branch 3122 and is spaced apart from the first branch 311, so that mutual coupling between the first branch 3121 and the second branch and the first branch 311 is avoided or very small mutual coupling is avoided, and direct coupling between the first branch 311 and the second resonance is ensured. The other end of the first branch 3121 is provided with a ground terminal 313, the other end of the second branch 3122 is provided with a free end 314, and the first branch 3121 and the second branch 3122 are both electrically connected to the second resonant branch 320. Thus, the first branch 311, the first branch 3121, the second branch 3122, and the second resonant branch 320 cooperate with each other to form the resonant structure 300.
Wherein, the included angle between first branch node 3121 and second branch node 3122 can carry out nimble adjustment according to actual use and design needs.
In one embodiment, as shown in fig. 2, the included angle between the first branch node 3121 and the second branch node 3122 is α, and 0 ° < α < 180 °, preferably, the first branch node 3121 and the second branch node 3122 are perpendicular to each other, that is, the extending direction of the first branch node 3121 is perpendicular to the extending direction of the second branch node 3122, so that the space of the first side surface 110 can be fully utilized, and the ground end 313 and the suspended end 314 are spaced far from each other, thereby avoiding interference or influence. Of course, in other embodiments, the included angle between the first branch node 3121 and the second branch node 3122 may also be 60 °, 120 °, or other suitable angles.
The extending direction is a direction from one end to the other end.
In addition, the number of the second branch nodes 3122 can be flexibly adjusted or designed according to actual use requirements.
In one embodiment, there are at least two second branch nodes 3122. One end of each second branch node 3122 is electrically connected to one end of the first branch node 3121, the other end of each second branch node 3122 is provided with a suspension end 314, and each second branch node 3122 is electrically connected to the second resonance branch node 320. In this way, the number of the second branch nodes 3122 can be increased, thereby further improving suppression.
Specifically, the number of the second branch nodes 3122 may be two, three, or more.
In addition, the actual number of the first metalized vias 140 can be flexibly adjusted or designed according to the actual use requirement, and may be, for example, one, two, three or more.
In one embodiment, the first branch 3121 is electrically connected to the second resonant branch 320 through at least one first metalized via 140, and the second branch 3122 is electrically connected to the second resonant branch 320 through at least one first metalized via 140. So, can guarantee effectively that first branch knot 3121 and second branch knot 3122 all directly through first metallized via hole 140 and second resonance branch knot 320 electric connection for the electric current distributes more evenly on first branch knot 3121 and second branch knot 3122.
In one embodiment, there is also provided a communication device comprising the filter of any of the above embodiments.
In the communication device of the above embodiment, the resonant structure 300 can be formed by the first resonant branch 310 and the second resonant branch 320 to add an extra set of zero points, and the suppression can be improved without adding extra branches, and the PCB body 100 is used as a support without extra dielectric support, so that not only the weight of the filter can be reduced, but also the material cost can be reduced.
The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.
It should be noted that, the components included in the "unit", "assembly", "mechanism" and "apparatus" of the present application can also be flexibly combined, i.e. can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" 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 "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It should also be understood that in interpreting the connection or positional relationship of the elements, although not explicitly described, the connection and positional relationship are to be interpreted as including a range of error that should be within an acceptable range of deviation from the particular values as determined by one skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present 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 filter, comprising:
a PCB body having first and second oppositely spaced sides;
the main transmission line comprises a first strip line and a second strip line which are oppositely arranged and electrically connected, the first strip line is arranged on the first side surface, and the second strip line is arranged on the second side surface;
the first resonance branch knot is arranged on the first side face and is electrically connected with the first strip line; and
the second resonance branch knot is arranged on the second side face and is arranged at an interval with the second strip line;
the first resonance branch and the second resonance branch are arranged on the same side of the main transmission line, the first resonance branch is close to one side of the first strip line and is in coupling connection with the second resonance branch, one side of the first strip line, which is far away from the first resonance branch, is electrically connected with the second resonance branch, and an earthing end and a suspension end which are arranged at intervals are arranged on one side of the first resonance branch, which is far away from the first strip line.
2. The filter of claim 1, wherein the first resonant branch comprises a first branch and a second branch, one side of the first branch is electrically connected to the first strip line, the other side of the first branch is spaced from the second branch, the ground terminal and the free end are disposed on a side of the second branch away from the first branch, the first branch is coupled to the second resonant branch, and the second branch is electrically connected to the second resonant branch.
3. The filter of claim 2, wherein a projection of the first stub on the second side and a projection of the second stub on the second side partially coincide with a projection of the second resonant stub on the second side.
4. The filter of claim 2, wherein the PCB body is provided with at least one first metalized via, and the second stub is electrically connected to the second resonant stub through the first metalized via.
5. The filter according to claim 4, wherein the second branch node comprises a first branch node and a second branch node arranged at an included angle, one end of the first branch node is electrically connected to one end of the second branch node and spaced from the first branch node, the other end of the first branch node is provided with the grounding terminal, the other end of the second branch node is provided with the suspension terminal, and the first branch node and the second branch node are both electrically connected to the second resonance branch node.
6. The filter according to claim 5, wherein the angle between the first branch segment and the second branch segment is α, and 0 ° < α < 180 °.
7. The filter according to claim 5, wherein the number of the second branches is at least two, one end of each of the second branches is electrically connected to one end of the first branch, the other end of each of the second branches is provided with the free end, and each of the second branches is electrically connected to the second resonant branch.
8. The filter of claim 5, wherein the first stub is electrically connected to the second resonant stub through at least one of the first metalized vias, and wherein the second stub is electrically connected to the second resonant stub through at least one of the first metalized vias.
9. The filter of any one of claims 1 to 8, wherein the PCB body is provided with at least one second metalized via along an extension direction of the main transmission line, and the first strip line and the second strip line are electrically connected through the second metalized via.
10. A communication device comprising a filter according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222933034.9U CN218351699U (en) | 2022-11-03 | 2022-11-03 | Communication device and filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222933034.9U CN218351699U (en) | 2022-11-03 | 2022-11-03 | Communication device and filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218351699U true CN218351699U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222933034.9U Active CN218351699U (en) | 2022-11-03 | 2022-11-03 | Communication device and filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218351699U (en) |
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- 2022-11-03 CN CN202222933034.9U patent/CN218351699U/en active Active
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