CN219610718U

CN219610718U - Broadband five-way combiner structure

Info

Publication number: CN219610718U
Application number: CN202223549196.9U
Authority: CN
Inventors: 余胜敏; 梁国春; 江文权; 江顺喜
Original assignee: Pivotone Communication Technologies Inc
Current assignee: Pivotone Communication Technologies Inc
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-08-29
Anticipated expiration: 2032-12-30

Abstract

The embodiment of the utility model discloses a broadband five-way combiner structure, and belongs to the technical field of combiners. The broadband five-way combiner structure comprises a cavity and a cover plate, wherein the cavity comprises a low-pass filter, a first band-pass filter, a second band-pass filter, a third band-pass filter, a fourth band-pass filter, a first public cavity, a second public cavity, a third public cavity and a fourth public cavity; the cavity body comprises five input connectors and one output connector, the five input connectors are respectively connected with the input ends of the filters, and 2G, 3G, 4G and 5G frequency bands can be covered by the filters, so that the problem of mutual interference of signals among networks in the same frequency band is solved; the high-power high-isolation low-intermodulation high-isolation high-power circuit breaker is simple and compact in structure, convenient to produce and assemble and capable of meeting the high-power high-isolation low-intermodulation technical requirements of the circuit breaker.

Description

Broadband five-way combiner structure

Technical Field

The embodiment of the utility model relates to the technical field of a combiner, in particular to a broadband five-way combiner structure.

Background

With the development of the fifth Generation mobile communication technology (5 th-Generation, 5G), the development of the communication technology has changed from the amount of change over the years, and the 5G communication is a communication technology currently being comprehensively constructed, and has the advantages of high frequency and wide operating frequency band.

However, under the condition of not being fully covered, the practical problem that the original 2G, 3G, 4G communication networks and 5G communication networks are covered together and the mutual interference of signals among the networks in different frequency bands is solved is considered.

Thus, it is critical to design a high performance multiplexer with low intermodulation, high isolation, low loss to solve the above problems.

Disclosure of Invention

The embodiment of the utility model provides a broadband five-way combiner structure. The technical scheme is as follows:

the embodiment of the utility model provides a broadband five-way combiner structure, which comprises a cavity and a cover plate, wherein the cavity comprises a low-pass filter, a first band-pass filter, a second band-pass filter, a third band-pass filter, a fourth band-pass filter, a first public cavity, a second public cavity, a third public cavity and a fourth public cavity;

the cavity comprises five input connectors and an output connector, and the five input connectors are respectively connected with the input ends of the filters.

Optionally, the low-pass filter is composed of twelve stages of connections, each stage of connection includes a high-impedance structure and a low-impedance structure, wherein the high-impedance structure realizes an equivalent inductance, and the low-impedance structure realizes an equivalent capacitance.

Optionally, the low-pass filter has a frequency band of 617-960 MHz and a transmission zero.

Optionally, the first band-pass filter is formed by connecting two band-pass filters in parallel, the frequency bands of the two band-pass filters are 1695-1780MHz and 2110-2200MHz respectively, and the tail ends of the two band-pass filters are combined through the fourth common cavity to form a port;

the band-pass filter corresponding to 1695-1780MHz consists of 5 resonators, and an inductive transmission zero point is arranged;

the band-pass filter corresponding to 2110-2200MHz consists of 5 resonators, and no transmission zero point is set.

Optionally, the second band-pass filter has a frequency range of 1850-2000MHz, is composed of 7 resonators, and is provided with a capacitive transmission zero.

Optionally, the third band-pass filter has a frequency band of 2300-2700MHz, is composed of 8 resonators, and is provided with a capacitive transmission zero.

Optionally, the frequency band of the fourth band-pass filter is 3300-4200MHz, and the fourth band-pass filter is composed of 11 resonators, and no transmission zero point is set.

Optionally, the working frequency bands of the taps of the first public cavity, the second public cavity, the third public cavity and the fourth public cavity are 1700-4200 MHz.

Optionally, the cover plate includes an inner cover plate and an outer cover plate.

Optionally, the broadband five-way combiner structure is outdoor, and the protection level is IP67.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

in the broadband five-path combiner structure, 2G, 3G, 4G and 5G frequency bands can be covered by each filter, so that the problem of mutual interference of signals among networks in the same frequency band is solved; the high-power high-isolation low-intermodulation high-isolation high-power circuit breaker is simple and compact in structure, convenient to produce and assemble and capable of meeting the high-power high-isolation low-intermodulation technical requirements of the circuit breaker.

Drawings

Fig. 1 illustrates a schematic diagram of a broadband five-way combiner architecture according to an exemplary embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

References herein to "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

As shown in fig. 1, a schematic diagram of a broadband five-way combiner structure according to an exemplary embodiment of the present utility model is shown.

In the embodiment of the present utility model, for a complete wideband five-way combiner structure, at least a cavity 10 and a cover plate are included, where the cavity includes a low-pass filter (i.e. filter 1), a first band-pass filter (i.e. filter 2), a second band-pass filter (i.e. filter 3), a third band-pass filter (i.e. filter 4), a fourth band-pass filter (i.e. filter 5), a first common cavity (i.e. common cavity 1), a second common cavity (i.e. common cavity 2), a third common cavity (i.e. common cavity 3) and a fourth common cavity (i.e. common cavity 4). The broadband five-way combiner is of an outdoor type and has the protection grade of IP67.

In one possible embodiment, as shown in fig. 1, the outside of the cavity comprises five input connectors 6 and one output connector 7, which are connected to the input of each filter, respectively.

The structural features and functional parameters of the individual filters are described below.

For the low-pass filter, the frequency band of the low-pass filter is 617-960 MHz, and the low-pass filter has a transmission zero point. The low-pass filter is composed of twelve stages of connection, each stage of connection comprises a high-impedance structure and a low-impedance structure, wherein the high-impedance structure realizes equivalent inductance, and the low-impedance structure realizes equivalent capacitance.

Specifically, the low-pass filter is formed by silver plating by processing a copper sheet with the thickness of 1mm, equivalent inductance is realized by using a high-impedance structure with the width of 1.5mm and the thickness of 1mm, equivalent capacitance is realized by using a low-impedance structure with the width of 18mm, the thickness of 1mm and the ground clearance of 0.5mm, inductance is equivalently realized by using high impedance at the 1 st stage of low pass, inductance is realized by using the 2 nd stage of parallel capacitance (low-impedance structure), inductance is connected in series (high-impedance structure) at the 3 rd stage, inductance (high-impedance structure) and parallel capacitance (low-impedance structure) are alternated in sequence, the 12 th stage of parallel capacitance (low-impedance structure) is connected with an inner conductor of 50 ohms to a connector, and the low-pass series capacitance is fixed on a cavity through a medium screw.

For the first band-pass filter, the first band-pass filter is formed by connecting two band-pass filters in parallel, the frequency bands of the two band-pass filters are 1695-1780MHz and 2110-2200MHz respectively, and the tail ends of the two band-pass filters are combined through the fourth common cavity to form a port. The band-pass filter corresponding to 1695-1780MHz consists of 5 resonators, and an inductive transmission zero point is arranged; the band-pass filter corresponding to 2110-2200MHz consists of 5 resonators, and no transmission zero point is set.

For the second band-pass filter, the frequency band of the second band-pass filter is 1850-2000MHz, and the second band-pass filter consists of 7 resonators, and a capacitive transmission zero point is arranged.

For the third band-pass filter, the frequency band of the third band-pass filter is 2300-2700MHz, and the third band-pass filter consists of 8 resonators and is provided with a capacitive transmission zero point.

For the fourth band-pass filter, the frequency band of the fourth band-pass filter is 3300-4200MHz, and the fourth band-pass filter consists of 11 resonators, and no transmission zero point is set.

With respect to each common cavity, the working frequency bands of the first common cavity, the second common cavity, the third common cavity and the fourth common cavity tap are 1700-4200 MHz.

Alternatively, as shown in fig. 1, the cover plate includes an inner cover plate 11 and an outer cover plate 12.

In addition, as shown in FIG. 1, filter 2, filter 3, filter 4 and filter 5 are coupled out of common cavity 1, common cavity 2 and common cavity 3, respectively, common cavity 1 is coupled out of passband 3300-4200MHz of filter 5 and passband 1695-2700MHz of filter 2-4, common cavity 2 is coupled out of passband 2300-2700MHz of filter 4 and passband 1695-2200MHz of filter 2-3, and common cavity 3 is coupled out of passband 1850-2000MHz of filter 3 and passband 1695-1780MHz/2110-2200MHz of filter 2.

In one possible implementation, each bandpass filter is typically implemented as a coaxial structural cavity, with taps of the common cavity being implemented with either disk-coupled or probe-coupled capacitive structures.

Based on the broadband five-way combiner structure, the tap coupling strength can be adjusted. In one possible implementation, the connector is partially mismatched, and the tap coupling strength is adjusted; adjusting the height of the tap and adjusting the coupling strength of the tap; adjusting the diameter of a coupling disc and adjusting the coupling strength of a tap; adjusting the length of the probe entering the resonant rod and adjusting the coupling strength of the tap; adjusting the diameter and thickness of the medium and adjusting the coupling strength of the tap; and adjusting the length of the first-stage inductor with low pass and the connection position of the first-stage inductor with the tap, and adjusting the coupling strength of the tap.

In summary, the utility model provides a broadband five-way combiner structure, which can cover 2G, 3G, 4G and 5G frequency bands through each filter, thereby solving the problem of signal mutual interference among networks in the same frequency band; the high-power high-isolation low-intermodulation high-isolation high-power circuit breaker is simple and compact in structure, convenient to produce and assemble and capable of meeting the high-power high-isolation low-intermodulation technical requirements of the circuit breaker.

In addition, in the implementation process, the bandwidth of the filter is 2505MHz and the relative bandwidth reaches 84.7% because of the bandwidth 1700-4200 MHz of the passband of the common cavity, the theoretical tap time delay of the filter is about 0.22ns, the time delay is too small, the time delay is difficult to separate in simulation software, the time delay is smaller than low noise, and whether the tap strength reaches the requirement can not be judged only by the reflection time delay of the simulation tap. In order to better apply the broadband five-way combiner structure, a tap model can be established in three-dimensional electromagnetic field simulation software, a pnp file is exported, the pnp file is imported into the path simulation software and then is comprehensively optimized, S parameters are used as references, whether the tap strength is proper or not is judged according to standing waves, and the internal structure is optimized to meet the technical requirements.

It should be understood that references herein to "and/or" describe relationships of schema objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The foregoing description of the exemplary embodiments of the utility model is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The broadband five-way combiner structure is characterized by comprising a cavity and a cover plate, wherein the cavity comprises a low-pass filter, a first band-pass filter, a second band-pass filter, a third band-pass filter, a fourth band-pass filter, a first public cavity, a second public cavity, a third public cavity and a fourth public cavity;

2. The broadband five-way combiner structure of claim 1, wherein the low pass filter is comprised of twelve stages of connections, each stage of connection comprising a high impedance structure and a low impedance structure, wherein the high impedance structure achieves an equivalent inductance and the low impedance structure achieves an equivalent capacitance.

3. The broadband five-way combiner structure of claim 1, wherein the low-pass filter has a frequency band of 617-960 mhz and a transmission zero.

4. The broadband five-way combiner structure according to claim 1, wherein the first band-pass filter is formed by connecting two band-pass filters in parallel, the frequency bands of the two band-pass filters are 1695-1780mhz and 2110-2200mhz respectively, and the tail ends of the two band-pass filters are combined through the fourth common cavity to form a port;

the band-pass filter corresponding to 2110-2200MHz consists of 5 resonators, and no transmission zero point is arranged.

5. The broadband five-way combiner structure according to claim 1, wherein the second band-pass filter has a frequency band of 1850-2000mhz, is composed of 7 resonators, and is provided with a capacitive transmission zero.

6. The broadband five-way combiner structure according to claim 1, wherein the third band-pass filter has a frequency band of 2300-2700mhz, is composed of 8 resonators, and is provided with a capacitive transmission zero.

7. The broadband five-way combiner structure according to claim 1, wherein the fourth bandpass filter has a frequency band of 3300-4200MHz, is composed of 11 resonators, and does not provide a transmission zero.

8. The broadband five-way combiner structure according to any one of claims 1 to 7, wherein the working frequency bands of the first common cavity, the second common cavity, the third common cavity and the fourth common cavity tap are 1700-4200 mhz.

9. The broadband five-way combiner structure of any one of claims 1-7, wherein the cover comprises an inner cover and an outer cover.

10. The broadband five-way combiner architecture of any one of claims 1-7, wherein the broadband five-way combiner architecture is outdoor and has a protection class IP67.