CN209658373U - A kind of low intermodulation wideband two-way combiner - Google Patents
A kind of low intermodulation wideband two-way combiner Download PDFInfo
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- CN209658373U CN209658373U CN201920558576.8U CN201920558576U CN209658373U CN 209658373 U CN209658373 U CN 209658373U CN 201920558576 U CN201920558576 U CN 201920558576U CN 209658373 U CN209658373 U CN 209658373U
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Abstract
The utility model discloses a kind of low intermodulation wideband two-way combiners, including cavity and cover board, first filter and second filter are equipped in the cavity, the side of cavity is equipped with the first connector and the second connector for exposing cavity, the other side is equipped with the third connector for exposing cavity, the first filter is low-pass filter, and the second filter is high-pass filter, and wherein the impedance line of low-pass filter is set in cavity with "the" shape.Since the structure of low-pass filter entirety is longer, if it is unreasonable to arrange, it is bigger than normal to will lead to combiner shape length or volume partially, it is unfavorable for installing, the impedance line of low-pass filter is designed to the "the" shape of folded bent here, space utilization rate is effectively improved, the volume of entire combiner is reduced, is more convenient for installing.The utility model has the following beneficial effects: return loss is good in passband, insertion loss is small, and stopband Out-of-band rejection is high, small volume, install convenient, and stability is high.
Description
Technical field
The utility model relates to microwave communication transmission field, in particular to a kind of low intermodulation wideband two-way combiner.
Background technique
Frequency range used in mobile communication is more and more wider and the miniaturization of passive device equipment, low weight, high selection
The development trend of property bandwidth, the requirement to broadband combiner are higher and higher.Broadband combiner belongs to the base station of wireless telecommunications system
The passive device of system or indoor distributed system, basic function be exactly the signal of the multiband of input is combined to it is together defeated
Out, communication signal covering is provided to different regions by antenna, reduces communication network and is laid with cost, reduce Intermodulation Interference, and
Passed through with minimal losses.The volume of existing combiner is generally larger, and occupied space is more.
The utility model of publication number CN202172114U discloses a kind of broadband double-frequency combiner, including cavity and cavity
On cover board, inside cavity sets there are two filter, respectively 550 ~ 750MHz low-pass filter and 1710 ~ 2700MHz band logical
Filter is separated by partition wall between two filters；Three connectors that containment portion is arranged in are 550 ~ 750MHz respectively
Low-pass filter port, 1710 ~ 2700MHz bandpass filter port and public port, wherein 550 ~ 750MHz low-pass filter
Port, 1710 ~ 2700MHz bandpass filter port are connected with above-mentioned corresponding filter input end respectively, public port with it is upper
The output end for stating two filters connects jointly, and partition wall of two filters in the junction is provided with through slot and realizes coupling.
The above-mentioned prior art is in the presence of structure is complicated, higher cost, the excessive problem of volume.
Utility model content
For prior art construction complexity, higher cost, the excessive problem of volume, the utility model provides a kind of low mutual
Wideband two-way combiner is adjusted, structure is simple, and cost is relatively low, and small volume is easily installed.
It is the technical solution of the utility model below.
A kind of low intermodulation wideband two-way combiner, including cavity and cover board are equipped with first filter and the in the cavity
Two filters, the side of cavity are equipped with the first connector and the second connector that expose cavity, and the other side is equipped with the third for exposing cavity
Connector, the first filter are low-pass filter, and the second filter is high-pass filter, the wherein resistance of low-pass filter
Anti- line is set in cavity with "the" shape.Since the structure of low-pass filter entirety is longer, if arrangement is unreasonable, will lead to
Combiner shape is partially long or volume is bigger than normal, is unfavorable for installing, the impedance line of low-pass filter is designed to folded bent here
"the" shape effectively improves space utilization rate, reduces the volume of entire combiner, is more convenient for installing.
Preferably, the low-pass filter is 12 grades of low-pass filters, including 6 grades of high impedance lines and 6 grades of low-impedance lines,
High low-impedance line alternately connects, and for the 6th grade of low-impedance line by impedance transformation the first connector of connection, the 1st grade of high impedance line connects the
Three connectors.Entire low-pass filter integration processing, performance are stablized, and intermodulation is very good, and low end frequency range is: 50-520MHz.
Preferably, the high-pass filter is 5 grades of elliptic function high-pass filters, the series connection being sequentially connected in series including 3
Capacitor, 2 shunt inductances and 2 branch capacitors；First series capacitance connects the second connector, and third series capacitance connects third
Connector；First branch capacitor connects the common end of the first series capacitance and the second series capacitance by the first shunt inductance；Second
Branch capacitor connects the common end of the second series capacitance and third series capacitance by the second shunt inductance.High-pass filter is by 5
Grade composition, elliptic function structure, 2 shunt inductances and 2 branch capacitors generate 2 transmission zeros, increase and inhibit, improve microwave
Parameter S21.3 series capacitances are made of upper and lower two coupling pieces, and there is dieelctric sheet support in centre, are fixed on chamber by medium screw
On body, 2 shunt inductances and 2 branch capacitors integrations, branch capacitor is liftoff 0.5mm have dielectric support, branch capacitor passes through
Medium screw is fixed on cavity.High end frequency range: 698-2700MHz.
It is square preferably, the cover board and cavity are correspondingly connected with face.The outer shape of square is easy and each
Kind equipment is coupled, and improves installation effectiveness and space utilization rate.
Preferably, position corresponding with all low-impedance lines is equipped with debugging screw rod on the cover board.Debug screw rod energy
It is enough to be adjusted as needed, improve the flexibility used.
Preferably, the cavity is externally provided with several fixed frames, the fixed frame includes buffer part and mounting portion, described slow
It rushes portion to be arranged between cavity and mounting portion, mounting portion is equipped with screw hole.Buffer part has certain elasticity and adjustable range, makes
It obtains during installation, even if the place of installation is there are radian or not smooth enough, can also adapt to and more securely install.
Preferably, the mounting portion is thin flat sheet of metal, the screw hole of mounting portion is strip screw hole.Strip screw hole makes
Obtaining can be adjusted as needed during installation, to find most suitable position.
Preferably, the buffer part is bending sheet metal.The angle for bending sheet metal has preferably elasticity or plastic
Property, even if there are angles when installation, cavity will not be influenced, stability is improved.
The utility model has the following beneficial effects: return loss is good in passband, insertion loss is small, and stopband Out-of-band rejection is high, body
Smaller, the install convenient of product, stability are high.
Detailed description of the invention
Fig. 1 is the plan view of the utility model embodiment cavity；
Fig. 2 is the equivalent circuit diagram of the utility model embodiment；
Fig. 3 is the fixed frame schematic diagram of the utility model embodiment；
In figure: cavity -1, water proof ring -4, low-impedance line -5, high impedance line -6, high-pass filter -7, shunt inductance -8, branch
Road capacitor -9, medium screw -10, buffer part -21, mounting portion -22.
Specific embodiment
The technical program is further elaborated below in conjunction with Figure of description.
Embodiment:
As shown in Figure 1 it is a kind of low intermodulation wideband two-way combiner, including cavity 1 and cover board, the first filter is equipped in cavity 1
Wave device and second filter, the side of cavity 1 are equipped with the first connector and the second connector that expose cavity 1, and the other side, which is equipped with, exposes
The third connector of cavity 1, first filter are low-pass filter, and second filter is high-pass filter 7, wherein low-pass filter
Impedance line be set in cavity 1 with "the" shape.Cavity 1 is surrounded by water proof ring 4, in conjunction with cover board after have it is preferable anti-
Aqueous energy.
The present embodiment low-pass filter is 12 grades of low-pass filters, including 6 grades of high impedance line 6 and 6 grade low-impedance lines 5, height
Low-impedance line alternately connects, and for the 6th grade of low-impedance line 5 by impedance transformation the first connector of connection, the 1st grade of high impedance line 6 connects the
Three connectors.Entire low-pass filter integration processing, performance are stablized, and intermodulation is very good, and low end frequency range is: 50-520MHz,
Has mark in Fig. 1.Since the structure of low-pass filter entirety is longer, if arrangement is unreasonable, it is inclined to will lead to combiner shape
Long or volume is bigger than normal, is unfavorable for installing, the impedance line of low-pass filter is designed to the "the" shape of folded bent here, effectively
Space utilization rate is improved, reduces the volume of entire combiner, is more convenient for installing.
The high end frequency range of the present embodiment high-pass filter 7: having mark in 698-2700MHz, Fig. 1, high pass filter
Wave device 7 is 5 grades of elliptic function high-pass filters, the series capacitance being sequentially connected in series including 3,2 shunt inductances 8 and 2 branch
Road capacitor 9；First series capacitance connects the second connector, and third series capacitance connects third connector；First branch capacitor 9 passes through the
The common end of one shunt inductance 8 connection the first series capacitance and the second series capacitance；Second branch capacitor 9 passes through the second electricity in parallel
The common end of sense 8 connection the second series capacitance and third series capacitance.2 shunt inductance 8 and 2 branch capacitors 9 generate 2 biographies
Defeated zero point increases and inhibits, and improves microwave parameters S21.3 series capacitances are made of upper and lower two coupling pieces, and there is dieelctric sheet in centre
Support, is fixed on cavity 1 by medium screw 10,2 shunt inductance 8 and 2 branch capacitors, 9 integration, branch capacitor 9 from
Ground 0.5mm, there is dielectric support, and branch capacitor 9 is fixed on cavity 1 by medium screw 10.The advantages of this design is electricity in parallel
Feel 8 ends load branch capacitor 9, can not only increase transmission zero in technical solution, reduce filter order, can also drop
Low cost simplifies combiner structure, improves intermodulation.
It is illustrated in figure 2 the equivalent circuit of the present embodiment, the inductance L1-L6 of low-pass filter corresponds to high impedance line 6, capacitor
C1-C5 corresponds to low-impedance line 5, and first order inductance L1 is convenient to be combined with high-pass filter 7 in common port, behind successively with it is more
Grade inductance and capacitor alternately connect, and 50 Europe of afterbody capacitance connection is matched to combiner input port；The electricity of high-pass filter 7
Appearance C9-C11 is series capacitance, and inductance L8 and inductance L9 are shunt inductance 8, and capacitor C6 and capacitor C8 are branch capacitor 9.
In addition the cover board of the present embodiment and cavity 1 are correspondingly connected with face and are square.Square outer shape be easy and
Various equipment are coupled, and improve installation effectiveness and space utilization rate.
Position corresponding with all low-impedance lines 5 is equipped with debugging screw rod on cover board.Debug screw rod can as needed into
Row adjustment, improves the flexibility used.
As shown in figure 3, cavity 1 is externally provided with several fixed frames, the fixed frame includes buffer part 21 and mounting portion 22, buffering
Portion 21 is arranged between cavity 1 and mounting portion 22, and buffer part 21 is bending sheet metal, and mounting portion 22 is thin flat sheet of metal, peace
The screw hole in dress portion 22 is strip screw hole.Buffer part has certain elasticity and adjustable range, so that during installation, even if installation
Place it is there are radian or not smooth enough, also can adapt to and more securely install.Strip screw hole during installation can
It is adjusted as needed, to find most suitable position.The angle for bending sheet metal has preferably elasticity or plasticity,
Even if when installation, there are angles, will not influence cavity 1, improve stability.
It should be noted that the specific embodiment is only used for that technical solution is further described, it is not used in and limits the skill
The range of art scheme, any modifications, equivalent substitutions and improvements etc. based on this technical solution are regarded as in the utility model
In protection scope.
Claims (8)
1. a kind of low intermodulation wideband two-way combiner, including cavity and cover board, the cavity is interior to be equipped with first filter and second
Filter, the side of cavity are equipped with the first connector and the second connector that expose cavity, and the third that the other side is equipped with exposing cavity connects
Head, which is characterized in that the first filter is low-pass filter, and the second filter is high-pass filter, wherein low pass
The impedance line of filter is set in cavity with "the" shape.
2. a kind of low intermodulation wideband two-way combiner according to claim 1, which is characterized in that the low-pass filter is
12 grades of low-pass filters, including 6 grades of high impedance lines and 6 grades of low-impedance lines, high low-impedance line alternately connect, the 6th grade of low-impedance line
The first connector of connection is converted by impedance, the 1st grade of high impedance line connects third connector.
3. a kind of low intermodulation wideband two-way combiner according to claim 1 or 2, which is characterized in that the high-pass filtering
Device is 5 grades of elliptic function high-pass filters, the series capacitance being sequentially connected in series including 3,2 shunt inductances and 2 branch electricity
Hold；First series capacitance connects the second connector, and third series capacitance connects third connector；First branch capacitor is in parallel by first
The common end of inductance connection the first series capacitance and the second series capacitance；Second branch capacitor passes through the second shunt inductance connection the
The common end of two series capacitances and third series capacitance.
4. a kind of low intermodulation wideband two-way combiner according to claim 1, which is characterized in that the cover board and cavity
The face of being correspondingly connected with is square.
5. a kind of low intermodulation wideband two-way combiner according to claim 2, which is characterized in that on the cover board and all
The corresponding position of low-impedance line is equipped with debugging screw rod.
6. a kind of low intermodulation wideband two-way combiner according to claim 1, which is characterized in that if the cavity is externally provided with
Dry fixed frame, the fixed frame include buffer part and mounting portion, and the buffer part is arranged between cavity and mounting portion, installation
Portion is equipped with screw hole.
7. a kind of low intermodulation wideband two-way combiner according to claim 6, which is characterized in that the mounting portion is flat
Sheet metal, the screw hole of mounting portion are strip screw hole.
8. a kind of low intermodulation wideband two-way combiner according to claim 6, which is characterized in that the buffer part is bending
Sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558576.8U CN209658373U (en) | 2019-04-23 | 2019-04-23 | A kind of low intermodulation wideband two-way combiner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920558576.8U CN209658373U (en) | 2019-04-23 | 2019-04-23 | A kind of low intermodulation wideband two-way combiner |
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| CN209658373U true CN209658373U (en) | 2019-11-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675566A (en) * | 2020-05-15 | 2021-11-19 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| WO2022133637A1 (en) * | 2020-12-21 | 2022-06-30 | 华为技术有限公司 | Antenna and communication device |
-
2019
- 2019-04-23 CN CN201920558576.8U patent/CN209658373U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675566A (en) * | 2020-05-15 | 2021-11-19 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| WO2022133637A1 (en) * | 2020-12-21 | 2022-06-30 | 华为技术有限公司 | Antenna and communication device |
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