CN212380536U - Honeycomb/WLAN two-frequency combiner - Google Patents
Honeycomb/WLAN two-frequency combiner Download PDFInfo
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- CN212380536U CN212380536U CN201921437006.XU CN201921437006U CN212380536U CN 212380536 U CN212380536 U CN 212380536U CN 201921437006 U CN201921437006 U CN 201921437006U CN 212380536 U CN212380536 U CN 212380536U
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Abstract
The utility model discloses a honeycomb/WLAN two-frequency combiner, which comprises a cavity and a cover plate, wherein one side wall of the cavity is respectively provided with a honeycomb signal input port and a WLAN signal input port, and the other side wall opposite to the side wall is provided with an output port; the cavity is internally provided with a partition plate and a plurality of resonance columns, and the partition plate divides the cavity into a first cavity and a second cavity; and one end of each of the first cavity and the second cavity is coupled with the output port, and the other end of each of the first cavity and the second cavity is coupled with the cellular signal input port and the WLAN signal input port respectively. The utility model discloses simple structure, convenient assembling can improve production efficiency, has the coupling performance of preferred to unique frequency-selecting characteristic has.
Description
Technical Field
The utility model relates to the field of communication, especially, relate to a honeycomb WLAN two-frequency combiner.
Background
The combiner generally comprises a cavity resonator and a circulator, wherein the cavity resonator is a high-Q-value and low-insertion-loss band-pass filter. The circulator is a three-fracture device with small forward loss (0.8dB) and large reverse loss (20 dB). In order to enhance the working stability of the combiner, an internal matching technology is generally adopted at present, namely, flexible cables are not used for connecting the cavities. In order to reduce the volume, a square cavity structure is generally adopted.
The combiner is also divided into a same-frequency combiner and a different-frequency-band combiner. For combining (synthesizing) signals in the same frequency band, because the channel interval is very small (250KHz), a resonant cavity frequency selection mode cannot be adopted for combining, and a 3dB bridge is usually adopted. The different-frequency-band combiner is used for combining the signal power of two different frequency bands. Such as CDMA and GSM power combining; CDMA & GSM and DCS power synthesis. Because the frequency interval of the two signals is larger, a resonant cavity frequency selection mode can be selected to synthesize the two signals, the combiner has the advantages of small insertion loss and high out-of-band rejection degree, and the out-of-band rejection index is one of the more important indexes of the combiner, and if the out-of-band rejection is not enough, the mutual interference between GSM and CDMA can be caused. In contrast to band pass filters, band reject filters are used to reject signals in a certain frequency band, while passing signals in other frequency bands. The combiner is typically implemented by a band pass filter or a band stop filter. Common band-stop filters are classified into two types, one is a narrow-band rejection band-stop filter (short for a narrow-band rejection filter), and the other is a wide-band rejection band-stop filter (short for a wide-band rejection filter). Narrow band reject filters are typically implemented using a combination of bandpass filters and subtractor circuits. Narrow band stop filters are commonly used as single frequency traps, also known as traps. Wide band reject filters are typically implemented using a low pass filter and a high pass filter in summation.
With the increasingly wide application of the combiner, the multi-band design of the combiner is required. The design, specification and the like of the combiner greatly influence the performance of the combiner, and the development of the current communication technology still needs more combiners with better performance, special requirements and lower cost, and the related technology needs to be continuously improved and enriched.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a cellular/WLAN two-frequency combiner with good performance, low cost and better frequency selection characteristic is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the cellular/WLAN two-frequency combiner comprises a cavity and a cover plate, wherein one side wall of the cavity is respectively provided with a cellular signal input port and a WLAN signal input port, and the other side wall opposite to the side wall is provided with an output port;
the cavity is internally provided with a partition plate and a plurality of resonance columns, and the partition plate divides the cavity into a first cavity and a second cavity; one end of each of the first cavity and the second cavity is coupled with an output port, the other end of each of the first cavity and the second cavity is coupled with a cellular signal input port and a WLAN signal input port, and the first cavity and the second cavity are communicated at the output ports;
a coupling rod is arranged in the second cavity, two ends of the coupling rod are respectively connected with a WLAN signal input port and an output port, and a plurality of band-stop resonant cavities are arranged in the second cavity; the resonance column comprises a first resonance column and a second resonance column; a plurality of coupling windows are disposed in the first cavity.
Further, the volume of the cavity is 178 x 84 x 22 mm;
the number of the first resonance columns is two, the number of the second resonance columns is four, and the second resonance columns are located between the first resonance columns;
the diameter, the height, the inner hole diameter, the hole depth of resonance post do respectively:
a first resonant column: 7.5mm, 11.5mm, 5.8mm, 9.5 mm;
a second resonant column: 8.5mm, 13mm, 6.5mm, 9 mm.
Further, the coupling structure of the cellular signal input port and the first cavity is a connecting rod for connecting the cellular signal input port and the closest resonant column in the first cavity, and the coupling structure of the first cavity and the output port is a connecting rod for connecting the coupling rod and the closest resonant column in the first cavity.
Furthermore, a connecting hole matched with the connecting rod is formed in the first resonance column.
Furthermore, the cover plate is installed on the cavity through screws, adjusting rod installation holes corresponding to the resonance columns are formed in the cover plate, and adjusting rods are installed in the adjusting rod installation holes.
And the second resonant column and the cavity are integrally formed into a structure in a die-casting manner.
Wherein, the resonance column is a silver-plated copper pipe.
The beneficial effects of the utility model reside in that: the utility model discloses a set up the division board in the cavity and divide into first cavity and second cavity with the cavity, first cavity and second cavity are respectively one end and are coupled with the output port, the respective other end of first cavity and second cavity respectively with honeycomb signal input port and WLAN signal input port coupling; in order to increase the coupling effect, a coupling rod is arranged in the second cavity, two ends of the coupling rod are respectively connected with the cellular signal input port and the output port, the second cavity forms a band-stop filter and has better intermodulation performance, a plurality of band-stop resonant cavities are arranged in the second cavity, a plurality of resonant columns are accommodated in the first cavity, and the size and the number of the resonant columns can enable the combiner to have different coupling frequencies and meet the communication requirement of specific frequency, specifically, the coupling frequency range of the cellular signal input port is 800-shaped and 2200MHz, and the coupling frequency range of the WLAN signal input port is 2400-shaped and 2500 MHz. The utility model discloses simple structure, convenient assembling can improve production efficiency, has the coupling performance of preferred to unique frequency-selecting characteristic has.
Drawings
Fig. 1 is a schematic structural diagram of a cellular/WLAN two-frequency combiner of the present invention;
fig. 2 is a schematic diagram of a cavity in the cellular/WLAN two-frequency combiner of the present invention;
FIG. 3 is a schematic perspective view of FIG. 2;
fig. 4 is a schematic structural view of the coupling rod of the present invention;
fig. 5 is a schematic structural diagram of a first resonant column in the present invention;
fig. 6 is a schematic structural diagram of a second resonant column in the present invention.
Description of reference numerals:
1. a cavity; 2. a cellular signal input port; 3. a WLAN signal input port; 4. an output port; 5. a first cavity; 6. a second cavity; 7. a resonant cavity is blocked; 81. a first resonant column; 810. connecting holes; 82. a second resonant column; 9. a coupling rod; 10. a fixing hole; 11. a partition plate.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the cavity is divided into two cavities by the partition plate, the coupling rod is accommodated in the second cavity, the band-stop resonant cavities for accommodating copper wires are arranged in the second cavity, the resonant columns are arranged in the first cavity, the combiner can have different coupling frequencies, the communication requirement of specific frequency is met, and the band-stop resonant cavity has the advantages of simple structure, low production cost and better frequency selection performance.
Referring to fig. 1 to 6, a cellular/WLAN two-frequency combiner includes a cavity 1 and a cover plate, wherein a cellular signal input port 2 and a WLAN signal input port 3 are respectively disposed on a sidewall of the cavity 1, and an output port 4 is disposed on another sidewall opposite to the sidewall;
a partition plate 11 and a plurality of resonance columns are arranged in the cavity 1, and the cavity 1 is divided into a first cavity 5 and a second cavity 6 by the partition plate 11; one end of each of the first cavity 5 and the second cavity 6 is coupled to the output port 4, the other end of each of the first cavity 5 and the second cavity 6 is coupled to the cellular signal input port 2 and the WLAN signal input port, and the first cavity 5 and the second cavity 6 are communicated with each other at the output port 4;
a coupling rod 9 is arranged in the second cavity 6, two ends of the coupling rod 9 are respectively connected with the WLAN signal input port 3 and the output port 4, and a plurality of band-stop resonant cavities 7 are arranged in the second cavity 6; the resonant columns comprise a first resonant column 81 and a second resonant column 82; a plurality of coupling windows are provided in the first cavity 5.
From the above description, the beneficial effects of the present invention are: the utility model adopts the structure that the cavity 1 is divided into the first cavity 5 and the second cavity 6 by arranging the division plate 11 in the cavity 1, one end of each of the first cavity 5 and the second cavity 6 is respectively coupled with the output port 4, and the other end of each of the first cavity 5 and the second cavity 6 is respectively coupled with the honeycomb signal input port 2 and the WLAN signal input port 3; in order to increase the coupling effect, a coupling rod 9 is disposed in the second cavity 6, two ends of the coupling rod 9 are respectively connected to the cellular signal input port 2 and the output port 4, the second cavity 6 forms a band-stop filter, and has a better intermodulation performance, a plurality of band-stop resonant cavities 7 are disposed in the second cavity 6, a plurality of resonant columns are disposed in the first cavity 5, and the size and number of the resonant columns enable the combiner to have different coupling frequencies, so as to meet the communication requirement of specific frequencies, specifically, the coupling frequency range of the cellular signal input port 2 is 800-2500 MHz, and the coupling frequency range of the WLAN signal input port 3 is 2400-2500 MHz. The utility model discloses simple structure, convenient assembling can improve production efficiency, has the coupling performance of preferred to unique frequency-selecting characteristic has.
Further, the volume of the chamber 1 is 178 x 84 x 22 mm;
the number of the first resonant columns 81 is two, the number of the second resonant columns 82 is four, and the second resonant columns are located between the first resonant columns 81;
the diameter, the height, the inner hole diameter, the hole depth of resonance post do respectively:
first resonant column 81: 7.5mm, 11.5mm, 5.8mm, 9.5 mm;
second resonant column 82: 8.5mm, 13mm, 6.5mm, 9 mm.
As can be seen from the above description, the size and number of the first resonant columns 81 and the second resonant columns 82 can adjust the coupling frequency of the signal input port.
Further, the coupling structure of the cellular signal input port 2 and the first cavity 1 is a connecting rod for connecting the cellular signal input port 2 and the closest resonant column in the first cavity 5, and the coupling structure of the first cavity 5 and the output port 4 is a connecting rod for connecting the coupling rod 9 and the closest resonant column in the first cavity 5.
According to the description, the signal combining performance of the combiner can be greatly improved at the welding position of each resonance column and the connecting rod, the failure rate is low, and the reliability is high.
Further, a connecting hole 810 matched with the connecting rod is formed in the first resonant column 81. The coupling hole 810 facilitates a welding assembly.
Furthermore, the cover plate is installed on the cavity 1 through screws, adjusting rod installation holes corresponding to the resonance columns are formed in the cover plate, and adjusting rods are installed in the adjusting rod installation holes. The corner of the chamber 1 is provided with a fixing hole 10.
As can be seen from the above description, the tuning bar enables fine tuning of the coupling frequency of the resonant beam.
Further, the second resonant column 82 and the cavity 1 are integrally formed in a die-casting manner.
As can be seen from the above description, the integral die-casting structure is beneficial to improving the production efficiency, is convenient to process and is beneficial to large-scale production.
Furthermore, the resonance column is a silver-plated copper pipe. The copper pipe has low manufacturing cost, and the silver can be conveniently and electrically connected, so that the product performance is improved.
The upper table is the performance parameters of the cellular/WLAN two-frequency combiner embodiment of the present invention.
To sum up, the cellular/WLAN two-frequency combiner provided by the present invention adopts a partition plate disposed in a cavity to partition the cavity into a first cavity and a second cavity, wherein one end of each of the first cavity and the second cavity is coupled to an output port, and the other end of each of the first cavity and the second cavity is coupled to a cellular signal input port and a WLAN signal input port; in order to increase the coupling effect, a coupling rod is arranged in the second cavity, two ends of the coupling rod are respectively connected with the cellular signal input port and the output port, the second cavity forms a band-stop filter, the band-stop filter has better intermodulation performance, a plurality of band-stop resonant cavities are arranged in the second cavity, a plurality of resonant columns are accommodated in the first cavity, and the size and the number of the resonant columns can enable the combiner to have different coupling frequencies and meet the communication requirement of specific frequency, specifically, the coupling frequency range of the cellular signal input port is 800-minus 2500MHz, and the coupling frequency range of the WLAN signal input port is 2400-minus 2500MHz, so that the coupling device has the following advantages:
1. the two-frequency combiner can allow multi-frequency signal coupling, and has high coupling performance;
2. the cost is low: all the resonant columns and the cavity can be integrally die-cast to form a structure, namely the combiner can be manufactured in a die-opening mode, the integral design enables the volume of the whole product to be greatly reduced, and the time cost and the material cost are greatly reduced;
3. the manufacturing efficiency is high: all the resonant columns and the cavity can be integrally die-cast to form a structure and are formed at one time, and the step of additionally mounting the resonant columns is not needed, so that the production and manufacturing efficiency is particularly high;
4. the combiner adopts a design of a band-stop line, and can effectively restrain stray output of a high-power transmitter and a parasitic passband generated by a nonlinear power amplifier or a band-pass filter.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (7)
1. A honeycomb/WLAN two-frequency combiner comprises a cavity and a cover plate, and is characterized in that one side wall of the cavity is provided with a honeycomb signal input port and a WLAN signal input port respectively, and the other side wall opposite to the side wall is provided with an output port;
the cavity is internally provided with a partition plate and a plurality of resonance columns, and the partition plate divides the cavity into a first cavity and a second cavity; one end of each of the first cavity and the second cavity is coupled with an output port, the other end of each of the first cavity and the second cavity is coupled with a cellular signal input port and a WLAN signal input port, and the first cavity and the second cavity are communicated at the output ports;
a coupling rod is arranged in the second cavity, two ends of the coupling rod are respectively connected with a WLAN signal input port and an output port, and a plurality of band-stop resonant cavities are arranged in the second cavity; the resonance column comprises a first resonance column and a second resonance column; a plurality of coupling windows are disposed in the first cavity.
2. The cellular/WLAN two-frequency combiner of claim 1, wherein the volume of the cavity is 178 x 84 x 22 mm;
the number of the first resonance columns is two, the number of the second resonance columns is four, and the second resonance columns are located between the first resonance columns;
the diameter, the height, the inner hole diameter, the hole depth of resonance post do respectively:
a first resonant column: 7.5mm, 11.5mm, 5.8mm, 9.5 mm;
a second resonant column: 8.5mm, 13mm, 6.5mm, 9 mm.
3. The cellular/WLAN two-frequency combiner of claim 1, wherein: the coupling structure of the honeycomb signal input port and the first cavity is a connecting rod for connecting the honeycomb signal input port and the nearest resonance column in the first cavity, and the coupling structure of the first cavity and the output port is a connecting rod for connecting the coupling rod and the nearest resonance column in the first cavity.
4. The cellular/WLAN two-frequency combiner of claim 1, wherein: and the first resonance column is provided with a connecting hole matched with the connecting rod.
5. The cellular/WLAN two-frequency combiner according to any one of claims 1 to 4, wherein: the cover plate is installed on the cavity through screws, adjusting rod installation holes corresponding to the resonance columns are formed in the cover plate, and adjusting rods are installed in the adjusting rod installation holes.
6. The cellular/WLAN two-frequency combiner according to any one of claims 1 to 4, wherein: and the second resonant column and the cavity are integrally formed in a die-casting mode.
7. The cellular/WLAN two-frequency combiner according to any one of claims 1 to 4, wherein: the resonance column is a silver-plated copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437006.XU CN212380536U (en) | 2019-08-30 | 2019-08-30 | Honeycomb/WLAN two-frequency combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437006.XU CN212380536U (en) | 2019-08-30 | 2019-08-30 | Honeycomb/WLAN two-frequency combiner |
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| Publication Number | Publication Date |
|---|---|
| CN212380536U true CN212380536U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921437006.XU Active CN212380536U (en) | 2019-08-30 | 2019-08-30 | Honeycomb/WLAN two-frequency combiner |
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| CN (1) | CN212380536U (en) |
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- 2019-08-30 CN CN201921437006.XU patent/CN212380536U/en active Active
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