CN211017336U - 5G low intermodulation multi-frequency combiner - Google Patents
5G low intermodulation multi-frequency combiner Download PDFInfo
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- CN211017336U CN211017336U CN201922063474.1U CN201922063474U CN211017336U CN 211017336 U CN211017336 U CN 211017336U CN 201922063474 U CN201922063474 U CN 201922063474U CN 211017336 U CN211017336 U CN 211017336U
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Abstract
The utility model discloses a 5G low intermodulation multifrequency combiner, including the combiner cavity and first frequency channel zero band pass filter, second frequency channel zero band pass filter and third frequency channel low pass filter that establish in the combiner cavity, wherein first frequency channel, second frequency channel and third frequency channel are different frequency channels; and the output ends or the input ends of the first frequency band zero band-pass filter, the second frequency band zero band-pass filter and the third frequency band low-pass filter are coupled into a connecting port for outputting or inputting. The advantages are that: the utility model discloses a multifrequency combiner possesses compact structure, small, light in weight, easily installation, the small, low intermodulation of insertion loss, high advantage such as intersystem isolation, satisfies each item index requirement of operator. In addition, the product has high integration level and stable and reliable product performance, is more suitable for batch production, and greatly improves the production efficiency and the product consistency compared with the traditional product.
Description
Technical Field
The utility model relates to a low intermodulation multifrequency combiner of 5G belongs to communication equipment technical field.
Background
With the official release and networking start of the 5G mobile communication commercial license plate, a telecom operator needs to solve the problems of common coverage of the original 2G/3G/4G communication network and the 5G communication network and reduction of mutual interference of various signals between the networks, so that a high-performance multi-frequency combiner is needed. On the basis of summarizing the defects of large structure volume, poor performance and the like of the traditional combiner, the company develops and provides the 5G low-intermodulation multi-frequency combiner by combining practical experience for many years.
Most of the multi-frequency combiners in the current market adopt a band-pass filter combining method, i.e. input or output ports of a plurality of band-pass filters are combined at a common port, and the main defects of the scheme are as follows: technically, the band-pass filter has narrow passband, large insertion loss, poor passive intermodulation and poor product reliability; in the aspect of cost, the low-frequency band-pass filter is large in size, multiple in materials used in combination, high in cost, large in difficulty in machining, assembling and debugging and high in labor cost.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a low intermodulation multifrequency combiner of 5G.
In order to solve the technical problem, the utility model provides a 5G low intermodulation multi-frequency combiner, which comprises a combiner cavity, a first frequency band zero-point band-pass filter, a second frequency band zero-point band-pass filter and a third frequency band low-pass filter, wherein the first frequency band, the second frequency band and the third frequency band are different frequency bands;
and the output ends or the input ends of the first frequency band zero band-pass filter, the second frequency band zero band-pass filter and the third frequency band low-pass filter are coupled into a connecting port for outputting or inputting.
Further, according to the electrical performance index requirement and the filter design principle, the first frequency band zero-point band-pass filter is an 8-order 2-suppression zero-point band-pass filter of 3400-4200 MHz; the second frequency band zero-point band-pass filter is a 7-order 1-suppression zero-point band-pass filter of 4400-4900 MHz; the third band low-pass filter is a 13-order low-pass filter of 728-2170 MHz.
Furthermore, the coupling adopts a common resonant cavity to couple the power of the two paths of band-pass filters to the inner conductor of the combiner terminal connector welded with the low-pass conductor, so that three filters are combined into one port for input or output.
Furthermore, one end of the combiner cavity is provided with a combiner port, and the end opposite to the combiner port is provided with a first frequency band zero band pass filter input/output port, a second frequency band zero band pass filter input/output port and a third frequency band low pass filter input/output port.
Furthermore, the combiner cavity comprises a first frequency band resonant cavity and a second frequency band resonant cavity, eight resonant rods are sequentially arranged in the first frequency band resonant cavity from the input/output port of the first frequency band zero band pass filter to the combining port, and the first frequency band resonant cavity is divided into eight corresponding resonant cavities; seven resonance rods are sequentially arranged in the second frequency band resonant cavity from the input/output port of the second frequency band zero band pass filter to the combining port, and the second frequency band resonant cavity is divided into seven corresponding resonant cavities;
the second resonant cavity, the fourth resonant cavity, the fifth resonant cavity and the seventh resonant cavity in the first frequency band resonant cavity generate two + 90-degree trapped wave suppression zeros through the structures of the coupling window and the coupling step;
a cross coupling component is arranged between a second resonant cavity and a fourth resonant cavity in the second frequency band resonant cavity to generate a-90-degree trapped wave suppression zero point;
and the eighth resonance rod in the first frequency band resonance cavity and the seventh resonance rod in the second frequency band resonance cavity are mutually coupled with the common resonance rod through a coupling step, the inner conductor of the combining end connector penetrates through the common resonance rod and is welded at one end of the low-pass conductor, and the middle part of the inner conductor is fixed by a polytetrafluoroethylene medium to form a combining end mutual coupling structure.
Furthermore, a low-pass conductor is arranged in a combiner cavity between the first frequency band resonant cavity and the second frequency band resonant cavity, one end of the low-pass conductor is connected with an inner conductor of the combiner terminal connector, and the other end of the low-pass conductor is connected with an input/output port of a third frequency band low-pass filter.
Furthermore, a low-pass insulating sleeve is sleeved on the low-pass conductor, so that capacitive coupling is formed between the 7 sections of low-impedance lines of the low-pass conductor and the cavity.
Further, the input/output port of the first frequency band zero band pass filter and the input/output port of the second frequency band zero band pass filter are mutually coupled with the corresponding first resonant rod in the first frequency band resonant cavity and the corresponding first resonant rod in the second frequency band resonant cavity respectively.
Furthermore, a shielding cover plate is arranged on the upper end surfaces of the first frequency band resonant cavity and the second frequency band resonant cavity, and a coupling tuning screw rod corresponding to each resonant cavity is arranged on the shielding cover plate.
Furthermore, in order to meet the use requirement of the outdoor environment of the product, a waterproof cover plate is arranged on the upper end face of the combiner cavity.
The utility model discloses the beneficial effect who reaches:
the utility model discloses a multifrequency combiner possesses compact structure, small, light in weight, easily installation, the small, low intermodulation of insertion loss, high advantage such as intersystem isolation, satisfies each item index requirement of operator. In addition, the product has high integration level and stable and reliable product performance, is more suitable for batch production, and greatly improves the production efficiency and the product consistency compared with the traditional product.
Drawings
Fig. 1 is a schematic diagram of the internal structure of the present invention.
In the figure, 1 is a combiner cavity, 2 is a resonance rod, 3 is a common resonance rod, 4 is a cross coupling component, 5 is a low-pass conductor, 6 is a low-pass insulating sleeve, 7 is a fixing medium, 8 is a coupling tuning screw rod, 9 is a shielding cover plate screw, and 10 is a waterproof cover plate screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a 5G low intermodulation multi-frequency combiner includes a combiner cavity, and a first frequency band zero-point band-pass filter, a second frequency band zero-point band-pass filter and a third frequency band low-pass filter which are arranged in the combiner cavity, wherein the first frequency band, the second frequency band and the third frequency band are different frequency bands;
and the output ends or the input ends of the first frequency band zero band-pass filter, the second frequency band zero band-pass filter and the third frequency band low-pass filter are coupled into a combining port for outputting or inputting.
The low-pass conductor is sleeved with an insulating medium and then is installed in the combiner cavity 1, the resonance rod 2 is integrally processed in the resonance cavities of the two paths of band-pass filters, the two paths of band-pass filters are respectively positioned on two sides of the low-pass filter, a common resonance rod 3 is formed at a coupling port, the inner conductor of the coupling port penetrates through the common resonance rod 3 (the middle of the inner conductor is fixed by a polytetrafluoroethylene medium 7) and is connected with one end of the low-pass conductor 5 and welded by soldering tin to form a complete common port impedance matching structure for combining the low-pass filter and the two paths of band-pass filters, the other end of the low-pass conductor 5 is connected with the inner conductor of the input/output end connector and welded, and the inner conductors of the input/output end connector of the other two. The cross coupling component 4 is arranged between the second resonant cavity and the fourth resonant cavity of the bandpass filter with the frequency band of 4400-4900MHz, a trap suppression zero point of minus 90 degrees is generated, and the suppression of minus 60dB of the frequency band of the other path of bandpass filter outside the band is achieved. The second and fourth resonant cavities and the fifth and seventh resonant cavities of the band-pass filter with the frequency band of 3400-4200MHz pass through the structures of the coupling window and the coupling step to generate two + 90-degree trap suppression zeros to suppress the out-of-band 4400-4900MHz frequency band to 60 dB. The shielding cover plate is arranged on the upper end surfaces of the resonant cavities through shielding cover plate screws 9, the coupling tuning screw rods 8 corresponding to the resonant cavities are arranged on the shielding cover plate, and the waterproof cover plate is fixedly arranged on the upper end surface of the cavity through waterproof cover plate screws 10.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. A5G low intermodulation multi-frequency combiner is characterized by comprising a combiner cavity, and a first frequency band zero-point band-pass filter, a second frequency band zero-point band-pass filter and a third frequency band low-pass filter which are arranged in the combiner cavity, wherein the first frequency band, the second frequency band and the third frequency band are different frequency bands;
and the output ends or the input ends of the first frequency band zero band-pass filter, the second frequency band zero band-pass filter and the third frequency band low-pass filter are coupled into a connecting port for outputting or inputting.
2. The 5G low intermodulation multi-frequency combiner as claimed in claim 1, wherein the first band zero band pass filter is an 8-order 2-suppression zero band pass filter of 3400 and 4200 MHz; the second frequency band zero-point band-pass filter is a 7-order 1-suppression zero-point band-pass filter of 4400-4900 MHz; the third band low-pass filter is a 13-order low-pass filter of 728-2170 MHz.
3. The 5G low intermodulation multi-frequency combiner of claim 1, wherein the coupling uses a common resonator to couple two bandpass filter powers onto the inner conductor of the combiner terminal connector welded to the low pass conductor, resulting in three filters combined into one port input or output.
4. The 5G low intermodulation multi-frequency combiner of claim 3, wherein one end of the combiner cavity is provided with a coupling port, and the opposite end of the combiner cavity is provided with a first band zero band pass filter input/output port, a second band zero band pass filter input/output port and a third band low pass filter input/output port.
5. The 5G low-intermodulation multi-frequency combiner of claim 4, wherein the combiner cavity comprises a first band resonator and a second band resonator, eight resonant rods are sequentially arranged in the first band resonator from the input/output port of the first band zero band pass filter to the coupling port, and the first band resonator is divided into eight corresponding resonators; seven resonant rods are sequentially arranged in the second frequency band resonant cavity from the input/output port of the second frequency band zero band pass filter to the coupling port, and the second frequency band resonant cavity is divided into seven corresponding resonant cavities;
the second resonant cavity, the fourth resonant cavity, the fifth resonant cavity and the seventh resonant cavity in the first frequency band resonant cavity generate two + 90-degree trapped wave suppression zeros through the structures of the coupling window and the coupling step;
a cross coupling component is arranged between a second resonant cavity and a fourth resonant cavity in the second frequency band resonant cavity to generate a-90-degree trapped wave suppression zero point;
and the eighth resonance rod in the first frequency band resonance cavity and the seventh resonance rod in the second frequency band resonance cavity are mutually coupled with the common resonance rod through a coupling step, the inner conductor of the combining end connector penetrates through the common resonance rod and is welded at one end of the low-pass conductor, and the middle part of the inner conductor is fixed by a polytetrafluoroethylene medium to form a combining end mutual coupling structure.
6. The 5G low intermodulation multi-frequency combiner of claim 5, wherein a low pass conductor is disposed in the combiner cavity between the first band resonator and the second band resonator, and one end of the low pass conductor is connected to the inner conductor of the combiner terminal connector, and the other end is connected to the input/output port of the third band low pass filter.
7. The 5G low intermodulation multi-frequency combiner of claim 6, wherein the low pass conductor is jacketed with a low pass insulating sleeve.
8. The 5G low intermodulation multi-frequency combiner of claim 5, wherein the input/output ports of the first band-zero band-pass filter and the second band-zero band-pass filter are mutually coupled with the corresponding first resonant rod in the resonant cavity of the first frequency band and the corresponding first resonant rod in the resonant cavity of the second frequency band, respectively.
9. The 5G low intermodulation multi-frequency combiner of claim 5, wherein the first band resonator and the second band resonator have shielding cover plates on their upper end surfaces, and the shielding cover plates have coupling tuning screws corresponding to the resonators.
10. The 5G low intermodulation multi-frequency combiner of claim 1, wherein a waterproof cover plate is installed on the upper end surface of the combiner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922063474.1U CN211017336U (en) | 2019-11-26 | 2019-11-26 | 5G low intermodulation multi-frequency combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922063474.1U CN211017336U (en) | 2019-11-26 | 2019-11-26 | 5G low intermodulation multi-frequency combiner |
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| CN211017336U true CN211017336U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922063474.1U Expired - Fee Related CN211017336U (en) | 2019-11-26 | 2019-11-26 | 5G low intermodulation multi-frequency combiner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141004A1 (en) * | 2020-12-28 | 2022-07-07 | 华为技术有限公司 | Signal transceiving apparatus, feed structure, and antenna |
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- 2019-11-26 CN CN201922063474.1U patent/CN211017336U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022141004A1 (en) * | 2020-12-28 | 2022-07-07 | 华为技术有限公司 | Signal transceiving apparatus, feed structure, and antenna |
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Granted publication date: 20200714 |