CN216085259U - Broadband low-frequency antenna combiner - Google Patents
Broadband low-frequency antenna combiner Download PDFInfo
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- CN216085259U CN216085259U CN202122808554.2U CN202122808554U CN216085259U CN 216085259 U CN216085259 U CN 216085259U CN 202122808554 U CN202122808554 U CN 202122808554U CN 216085259 U CN216085259 U CN 216085259U
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Abstract
The utility model provides a broadband low-frequency antenna combiner, and relates to the technical field of communication. In the broadband low-frequency antenna combiner provided by the utility model, a plurality of resonators are arranged in a cavity body and divided into two groups, the first group of resonators form a first filter, the second group of resonators form a second filter, one end of the first filter is connected with a first frequency band interface, the other end of the first filter is connected with a common resonator, one end of the second filter is connected with a second frequency band interface, the other end of the second filter is connected with the common resonator, the common resonator is connected with a common end interface, and the pass band of the first filter is smaller than that of the second filter; the adjacent resonators in the first filter form capacitive coupling and inductive coupling, and an inductive flying rod is connected between the two resonators in the first filter; capacitive coupling and inductive coupling are formed between adjacent resonators inside the second filter. The technical scheme of the utility model can improve the width of the pass band of the low-frequency filter.
Description
Technical Field
The utility model relates to the technical field of communication, in particular to a broadband low-frequency antenna combiner.
Background
The combiner combines two or more radio frequency signals transmitted from different transmitters into one path, and sends the path to a radio frequency device for antenna transmission. The combiner can enable systems working in different frequency bands to share the antenna and the feeder line, and is particularly suitable for the situation that a new station is built and an old station is co-located and co-aerial.
The inventor finds that in the existing antenna combiner, the width of the passband of the low-frequency filter is narrow, and the filtering requirement under some conditions cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a broadband low-frequency antenna combiner which can improve the width of a pass band of a low-frequency filter.
The utility model provides a broadband low-frequency antenna combiner, which adopts the following technical scheme:
the broadband low frequency antenna combiner includes: the device comprises a cavity, an upper cover plate, a lower cover plate, a public end interface, a first frequency band interface, a second frequency band interface, a plurality of resonators, a public resonator and an inductive flying rod; wherein the content of the first and second substances,
the upper cover plate and the lower cover plate are respectively covered on two sides of the cavity, and the public end interface, the first frequency band interface and the second frequency band interface are all arranged on the side wall of the cavity;
the resonators are arranged in the cavity and divided into two groups, the first group of resonators forms a first filter, the second group of resonators forms a second filter, one end of the first filter is connected with the first frequency band interface, the other end of the first filter is connected with the common resonator, one end of the second filter is connected with the second frequency band interface, the other end of the second filter is connected with the common resonator, the common resonator is connected with the common end interface, and the passband of the first filter is smaller than that of the second filter;
adjacent resonators in the first filter form capacitive coupling and inductive coupling, and an inductive flying rod is connected between the two resonators in the first filter;
and adjacent resonators inside the second filter form capacitive coupling and inductive coupling.
Optionally, the wideband low-frequency antenna combiner includes 10 resonators arranged in a line, 5 resonators on one side constitute the first filter, 5 resonators on one side constitute the second filter, and the common resonator is located between the first filter and the second filter.
Optionally, the resonator includes a first portion and a second portion connected to each other, and a size of the first portion is larger than a size of the second portion in an arrangement direction of the resonators.
Optionally, capacitive coupling is formed between first portions of adjacent resonators inside the first filter, and second portions of adjacent resonators inside the first filter are connected through connecting ribs to form inductive coupling; and the first parts of the adjacent resonators in the second filter form capacitive coupling, and the second parts of the adjacent resonators in the second filter are connected through connecting ribs to form inductive coupling.
Optionally, a conductive support is disposed on a side of the second part of the two resonators close to the first part, and a receiving groove is disposed on the conductive support, and the inductive flying bar is placed in the receiving groove.
Optionally, the inductive flying bar is post-welded in the accommodating groove.
Optionally, the inductive flying bar is a silver-plated copper wire.
Optionally, the inductive fly bar is connected between the second resonator and the fourth resonator in the first filter in the arrangement direction of the resonators.
Optionally, the common port, the first band port, and the second band port all use RG402 radio frequency cables.
Optionally, the broadband low-frequency antenna combiner further includes debugging screws corresponding to the resonators, and the upper cover plate is provided with debugging holes for exposing the debugging screws.
The utility model provides a broadband low-frequency antenna combiner, wherein a first filter is a low-frequency filter, adjacent resonators in the first filter form capacitive coupling and inductive coupling, adjacent resonators in a second filter form capacitive coupling and inductive coupling, and an inductive flying rod is connected between the two resonators in the first filter, so that a zero point is generated by the inductive flying rod, broadband filtering can be realized, and the width of a pass band of the low-frequency filter is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective structural view of a broadband low-frequency antenna combiner according to an embodiment of the present invention;
fig. 2 is a front view of a wideband low-frequency antenna combiner according to an embodiment of the present invention;
fig. 3 is a rear view of a wideband low-frequency antenna combiner provided in an embodiment of the present invention;
FIG. 4 is a diagram of the internal structure of the chamber provided in the embodiment of the present invention;
FIG. 5 is an assembly view of an inductive fly stick according to an embodiment of the present invention;
FIG. 6 is a block diagram of a common port provided by an embodiment of the present invention;
fig. 7 is a structural view of an upper cover plate in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the technical features in the embodiments of the present invention may be combined with each other without conflict.
An embodiment of the present invention provides a wideband low-frequency antenna combiner, and specifically, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, fig. 1 is a three-dimensional structure diagram of the wideband low-frequency antenna combiner provided in the embodiment of the present invention, fig. 2 is a front view of the wideband low-frequency antenna combiner provided in the embodiment of the present invention, fig. 3 is a rear view of the wideband low-frequency antenna combiner provided in the embodiment of the present invention, fig. 4 is a structure diagram inside a cavity provided in the embodiment of the present invention, and the wideband low-frequency antenna combiner includes: the inductive flying pole comprises a cavity 10, an upper cover plate 20, a lower cover plate 30, a public end interface 40, a first frequency band interface 50, a second frequency band interface 60, a plurality of resonators 70, a public resonator 80 and an inductive flying pole 90; wherein the content of the first and second substances,
the upper cover plate 20 and the lower cover plate 30 are respectively covered on two sides of the cavity 10, and the common end interface 40, the first frequency band interface 50 and the second frequency band interface 60 are all arranged on the side wall of the cavity 10;
the plurality of resonators 70 are arranged inside the cavity 10, the plurality of resonators 70 are divided into two groups, the first group of resonators 70 form a first filter, the second group of resonators 70 form a second filter, one end of the first filter is connected with the first frequency band interface 50, the other end of the first filter is connected with the common resonator 80, one end of the second filter is connected with the second frequency band interface 60, the other end of the second filter is connected with the common resonator 80, the common resonator 80 is connected with the common end interface 40, and the passband of the first filter is smaller than that of the second filter;
capacitive coupling and inductive coupling are formed between adjacent resonators 70 in the first filter, and an inductive flying bar 90 is connected between the two resonators in the first filter 70;
capacitive coupling and inductive coupling are formed between adjacent resonators 70 inside the second filter.
In the broadband low-frequency antenna combiner, the first filter is a low-frequency filter, capacitive coupling and inductive coupling are formed between adjacent resonators 70 in the first filter, and an inductive flying bar 90 is connected between two resonators 70 in the first filter, so that zero is generated by the inductive flying bar 90, broadband filtering can be realized, the width of a pass band of the low-frequency filter is increased, and the defect that the broadband cannot be realized by hybrid coupling (capacitive coupling and inductive coupling) is overcome.
In addition, adjacent resonators 70 in the second filter form capacitive coupling and inductive coupling, no flying rod is arranged in the second filter, the electrical performance is good, and the production consistency is good.
The following embodiments of the present invention describe each structure of the above wideband low frequency antenna combiner in detail. For reasons of space limitation, details of the structure not mentioned may be referred to in the prior art and will not be described herein.
Optionally, as shown in fig. 4, in the embodiment of the present invention, the wideband low-frequency antenna combiner includes 10 resonators 70 arranged in a line, 5 resonators 70 on one side form a first filter, 5 resonators 70 on one side form a second filter, and the common resonator 80 is located between the first filter and the second filter. In the orientation shown in fig. 4, the left 5 resonators 70 make up the first filter and the right 5 resonators 70 make up the second filter. Optionally, the passband of the first filter is 617MHz to 862MHz, and the passband of the second filter is 880MHz to 960 MHz.
Alternatively, as shown in fig. 4, in the embodiment of the present invention, the resonator 70 includes a first portion 71 and a second portion 72 connected to each other, and the size of the first portion 71 is larger than that of the second portion 72 in the arrangement direction of the resonator 70. The first portion 71 is used to generate capacitive coupling, which may also be referred to as loading capacitance, and the second portion 72 is used to generate inductive coupling, which may also be referred to as resonant rod.
Further, as shown in fig. 4, in the embodiment of the present invention, a capacitive coupling is formed between the first portions 71 of the adjacent resonators 70 inside the first filter, and the second portions 72 of the adjacent resonators 70 inside the first filter are connected by the connecting rib 100 to form an inductive coupling; the first portions 71 of the adjacent resonators 70 in the second filter are capacitively coupled to each other, and the second portions 72 of the adjacent resonators 70 in the second filter are connected to each other by the connecting rib 100 to form inductive coupling.
Optionally, as shown in fig. 5, fig. 5 is an assembly diagram of the inductive fly bar according to an embodiment of the present invention, in the embodiment of the present invention, a conductive support 110 is disposed on one side of the second part 72 of the two resonators 70 close to the first part 71, a receiving groove is disposed on the conductive support 110, and the inductive fly bar 90 is placed in the receiving groove, so that the inductive coupling between the two resonators 70 can be well achieved, and the inductive fly bar 90 is more convenient to install. Further, in the embodiment of the present invention, the inductive flying bar 90 is soldered in the receiving groove of the conductive support 110, so as to improve the structural stability of the inductive flying bar 90.
Optionally, in the embodiment of the present invention, inductive flying bar 90 is a silver-plated copper wire, which not only has good electrical conductivity, but also is easy to solder.
Alternatively, as shown in fig. 4, the inductive fly bar 90 is connected between the second resonator and the fourth resonator in the first filter in the arrangement direction of the resonators 70. Of course, those skilled in the art can select the materials according to actual needs during actual design and use.
Optionally, as shown in fig. 6, fig. 6 is a structural diagram of a common port according to an embodiment of the present invention, in the embodiment of the present invention, the common port 40, the first frequency band port 50, and the second frequency band port 60 all use RG402 radio frequency cables, so that the wideband low-frequency antenna combiner can be conveniently integrated inside an antenna.
Optionally, as shown in fig. 1, fig. 2, fig. 4, and fig. 7, fig. 7 is a structural diagram of an upper cover plate in an embodiment of the present invention, where the broadband low-frequency antenna combiner in the embodiment of the present invention further includes a debugging screw 120 corresponding to each resonator 70, and the upper cover plate 20 is provided with a debugging hole 21 for exposing the debugging screw 120, and in an application process, the coupling effect of the resonator 70 can be adjusted by adjusting a distance between the debugging screw 120 and the resonator 70, the cavity 10, and the like without detaching the upper cover plate 20, so as to adjust a filtering effect of the first filter or the second filter.
Optionally, in the embodiment of the present invention, the upper cover plate 20 and the lower cover plate 30 may be fixed on the cavity 10 by screws.
Optionally, in the embodiment of the present invention, the resonator 70 and the cavity 10 are integrally formed, and a contact interface between the resonator 70 and the cavity 10 is stable and has good consistency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A wideband low frequency antenna combiner, comprising: the device comprises a cavity, an upper cover plate, a lower cover plate, a public end interface, a first frequency band interface, a second frequency band interface, a plurality of resonators, a public resonator and an inductive flying rod; wherein the content of the first and second substances,
the upper cover plate and the lower cover plate are respectively covered on two sides of the cavity, and the public end interface, the first frequency band interface and the second frequency band interface are all arranged on the side wall of the cavity;
the resonators are arranged in the cavity and divided into two groups, the first group of resonators forms a first filter, the second group of resonators forms a second filter, one end of the first filter is connected with the first frequency band interface, the other end of the first filter is connected with the common resonator, one end of the second filter is connected with the second frequency band interface, the other end of the second filter is connected with the common resonator, the common resonator is connected with the common end interface, and the passband of the first filter is smaller than that of the second filter;
adjacent resonators in the first filter form capacitive coupling and inductive coupling, and an inductive flying rod is connected between the two resonators in the first filter;
and adjacent resonators inside the second filter form capacitive coupling and inductive coupling.
2. The wideband low frequency antenna combiner of claim 1, wherein said wideband low frequency antenna combiner comprises 10 said resonators arranged in a row, 5 of said resonators on one side comprising said first filter and 5 of said resonators on one side comprising said second filter, said common resonator being located between said first filter and said second filter.
3. The wideband low frequency antenna combiner of claim 2, wherein the resonator includes a first portion and a second portion connected to each other, the first portion having a size larger than a size of the second portion in an arrangement direction of the resonators.
4. The wideband low frequency antenna combiner of claim 3, wherein a first portion of adjacent resonators inside the first filter forms a capacitive coupling, and a second portion of adjacent resonators inside the first filter forms an inductive coupling by connecting ribs; and the first parts of the adjacent resonators in the second filter form capacitive coupling, and the second parts of the adjacent resonators in the second filter are connected through connecting ribs to form inductive coupling.
5. The wideband low frequency antenna combiner of claim 3, wherein a conductive support is disposed on a side of the second portion of the two resonators adjacent to the first portion, the conductive support having a receiving slot therein, the inductive flying bar being disposed within the receiving slot.
6. The wideband low frequency antenna combiner of claim 5, wherein the inductive flying bar is post-welded into the receiving groove.
7. The wideband low frequency antenna combiner of claim 6, wherein the inductive flying bar is a silver plated copper wire.
8. The wideband low frequency antenna combiner of claim 2 wherein the inductive fly-rod is connected between the second resonator and the fourth resonator of the first filter in the direction of the resonators.
9. The wideband low frequency antenna combiner of claim 1, wherein the common port interface, the first band interface, and the second band interface all employ RG402 radio frequency cables.
10. The wideband low frequency antenna combiner of claim 1, further comprising a tuning screw corresponding to each resonator, wherein the upper cover plate is provided with a tuning hole for exposing the tuning screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122808554.2U CN216085259U (en) | 2021-11-16 | 2021-11-16 | Broadband low-frequency antenna combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122808554.2U CN216085259U (en) | 2021-11-16 | 2021-11-16 | Broadband low-frequency antenna combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216085259U true CN216085259U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122808554.2U Active CN216085259U (en) | 2021-11-16 | 2021-11-16 | Broadband low-frequency antenna combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216085259U (en) |
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- 2021-11-16 CN CN202122808554.2U patent/CN216085259U/en active Active
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