CN207052733U - A kind of POI (Point Of Interface) for subway communication - Google Patents
A kind of POI (Point Of Interface) for subway communication Download PDFInfo
- Publication number
- CN207052733U CN207052733U CN201720887610.7U CN201720887610U CN207052733U CN 207052733 U CN207052733 U CN 207052733U CN 201720887610 U CN201720887610 U CN 201720887610U CN 207052733 U CN207052733 U CN 207052733U
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- CN
- China
- Prior art keywords
- shell body
- chassis shell
- poi
- wave filter
- interface
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Abstract
The utility model discloses a kind of POI (Point Of Interface) for subway communication, it includes chassis shell body, both sides are separately installed with eight frequency combiners in the chassis shell body, upper top surface is fixed with the first wave filter and 4 3db electric bridges in the chassis shell body, the second wave filter, 1 dual-frequency channel merger are fixed with the chassis shell body on bottom surface, 2 isolators and 3 3db electric bridges, R1 ports, R2 ports and multiple joints are installed on the trailing flank of the chassis shell body.POI of the present utility model has miniaturization, simple in construction, high-power, high-isolation high-quality performance.
Description
Technical field：
It the utility model is related to a kind of POI, more particularly to a kind of POI (Point Of Interface) for subway communication.
Background technology：
Urban construction is rapid at present, has many heavy constructions, all will constantly build in urban operating mechanism etc., such as large-scale museum,
The places such as subway, railway station, airport, government office are required for multiple-network system to access, especially as 4G mobile radio communications
The expansion of network coverage, LTE and 2 are realized there is an urgent need to a | the signal combining of 3G system combinings multiband, multisystem passes
It is defeated, using combination loss is small, interport isolation is high, with outer suppression, system is high, power capacity is big, temperature stability is good, third order intermodulation
Low POI carries out multisystem mixing, avoid interfering between system, small volume, performance are high and meet inexpensive, easy volume production etc.
It is required that.But current POI equipment inner structures are more complicated, and internal component is more, and volume is big, and POI insertion loss is larger, every
From spending poor, the features such as input power is small.
Utility model content：
The purpose of this utility model provides a kind of polyphyly integration for subway communication exactly in order to solve existing issue
Channel platform POI, there is miniaturization, simple in construction, high-power, high-isolation high-quality performance.
Technology solution of the present utility model is as follows：
A kind of POI (Point Of Interface) for subway communication, it includes chassis shell body, two in the chassis shell body
Side is separately installed with eight frequency combiners, and upper top surface is fixed with the first wave filter and 4 3db electric bridges, institute in the chassis shell body
State and be fixed with the second wave filter, 1 dual-frequency channel merger, 2 isolators and 3 3db electric bridges, institute in chassis shell body on bottom surface
State and R1 ports, R2 ports and multiple joints are installed on the trailing flank of chassis shell body；
The R1 ports, input of the R2 ports respectively with eight frequency combiners are connected, the output end of eight frequency combiner
The input with 3db electric bridges is connected respectively, the output end difference of 3 3db electric bridges for being installed on bottom surface in chassis shell body
Be connected with the input of dual-frequency channel merger, the first wave filter and the second wave filter, the dual-frequency channel merger, the first wave filter with
And second the output end of wave filter be connected respectively with joint, the output end of remaining the 4 3db electric bridges is connected with joint.
Preferably, it is connected with isolator on the 3db electric bridges being connected with dual-frequency channel merger.
Preferably, the both sides in the chassis shell body are further fixed on dividing plate, have in the chassis shell body by dividing plate point
Three accommodating chambers, eight frequency combiner are installed in the accommodating chamber of both sides.
Preferably, the chassis shell body outer surface offers heat emission hole.
Preferably, the cabinet leading flank is fixed with handle.
The beneficial effects of the utility model are：
1st, POI performance indications are high.The utility model mainly has combiner, 3dB electric bridges, isolator and wave filter, and will
Its concentration is integrated, and such POI standing-wave ratios are high, and insertion loss is small, and power is big, high-isolation；
2nd, because integrated level is high, reduce the volume and weight of product, be easy to installation of the product in Practical Project, product
MTBF is grown, durable in use.
Brief description of the drawings：
Fig. 1 is the utility model external structure schematic perspective view；
Fig. 2 is that the utility model removes the positive structure schematic after front side board；
Fig. 3 is Fig. 2 D-D directional profile schematic diagrames；
Fig. 4 is Fig. 2 B-B direction schematic diagrams；
Fig. 5 is the utility model rearview；
Fig. 6 is front connection schematic diagram of the present utility model；
Fig. 7 positions back panel wiring schematic diagram of the present utility model；
Fig. 8 is circuit theory diagrams of the present utility model.
In accompanying drawing：1st, chassis shell body；2nd, eight frequency combiner；3rd, the first wave filter；4th, 3db electric bridges；5th, the second wave filter；6、
Dual-frequency channel merger；7th, isolator；8th, R1 ports；9th, R2 ports；10th, joint；11st, dividing plate；12nd, heat emission hole；13rd, handle.
Embodiment：
As shown in figures 1-8, a kind of POI (Point Of Interface) for subway communication, it includes chassis shell body 1, institute
State both sides in chassis shell body 1 and be separately installed with eight frequency combiners 2, upper top surface is fixed with the first wave filter 3 in the chassis shell body 1
And 4 3db electric bridges 4, be fixed with bottom surface in the chassis shell body 15,1, second wave filter dual-frequency channel merger 6,2 every
From device 7 and 3 3db electric bridges 4, R1 ports 8, R2 ports 9 and multiple joints are installed on the trailing flank of the chassis shell body 1
10；
The input of the R1 ports 8, R2 ports 9 respectively with eight frequency combiners 2 is connected, eight frequency combiner 2 it is defeated
Go out input of the end respectively with 3db electric bridges 4 to be connected, the output of 3 3db electric bridges 4 for being installed on bottom surface in chassis shell body 1
Input respectively with dual-frequency channel merger 6, the first wave filter 3 and the second wave filter 5 is held to be connected, the dual-frequency channel merger 6, the
The output end of one wave filter 3 and the second wave filter 5 is connected with joint respectively, the output end of remaining the 4 3db electric bridges 4
It is connected with joint.
Further, it is connected with isolator 7 on the 3db electric bridges 4 being connected with dual-frequency channel merger 6.
Further, the both sides in the chassis shell body 1 are further fixed on dividing plate 11, pass through dividing plate in the chassis shell body 1
11 points have three accommodating chambers, and eight frequency combiner 2 is installed in the accommodating chamber of both sides, not only increase intensity, and save space.
Further, the outer surface of chassis shell body 1 offers heat emission hole 12, beneficial to the radiating of cabinet.
Further, the leading flank of chassis shell body 1 is fixed with handle 13, is easy to extraction to install.
Operation principle of the present utility model is：Telecommunications CDMA (825-835MHz) first connects 3dB electric bridges (823-880MHZ) letter
Number it is divided into two constant amplitudes and with the signal of 90 ° of phase differences each other, is then respectively connected to two eight same frequency combiners；Similarly
UNICOM WCDMA (1940-1980MHz), mobile TD-LTE (2300-2370MHz) and GSM (889-909MHz) and GSM (909-
915MHz) the 3dB electric bridges for accessing corresponding band access eight frequency combiners again；Mobile DCS (1710-1735MHz) and telecommunications
LTE1800 (1765-1780MHz) first passes through combiner combining access 3dB in parallel with UNICOM DCS＆LTE (1735-1765MHz) again
Electric bridge (1710-1880MHz), mobile TD-SCDMA (F＆A) (1880-1915＆2010-2025MHz) signal source and 3dB electric bridges
Increase a dual-frequency channel merger between (1880-2025MHz) to be combined, due to the requirement of isolation, 3dB electric bridges close with double frequency
Increase by two isolators between the device of road；Telecommunications LTE2100 (1920-1935MHz) signal sources and 3dB electric bridges (1920-1980MHz)
Between pass through wave filter (1920-1935MHz) and connect, eight frequency combiners input termination electric bridge, output termination antenna-feedback system.
Performance parameter table of the present utility model is as follows：
From the performance indications in above-mentioned table, standing-wave ratio of the present invention is high, and insertion loss is small, and power is big, high-isolation production
The performance indications such as product MTBF greatly improve.
Preferred embodiment of the present utility model is the foregoing is only, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under the premise of work, it should all belong to the scope of the utility model protection.
Claims (5)
1. a kind of POI (Point Of Interface) for subway communication, it includes chassis shell body（1）, it is characterised in that：It is described
Chassis shell body（1）Interior both sides are separately installed with eight frequency combiners（2）, the chassis shell body（1）Interior upper top surface is fixed with the first filter
Ripple device（3）And 4 3db electric bridges（4）, the chassis shell body（1）The second wave filter is fixed with interior bottom surface（5）, 1 double frequency
Combiner（6）, 2 isolators（7）And 3 3db electric bridges（4）, the chassis shell body（1）Trailing flank on R1 ports are installed
（8）, R2 ports（9）And multiple joints（10）；
The R1 ports（8）, R2 ports（9）Respectively with eight frequency combiners（2）Input be connected, eight frequency combiner（2）
Output end respectively with 3db electric bridges（4）Input be connected, it is described to be installed on chassis shell body（1）3 3db electricity of interior bottom surface
Bridge（4）Output end respectively with dual-frequency channel merger（6）, the first wave filter（3）And second wave filter（5）Input be connected,
The dual-frequency channel merger（6）, the first wave filter（3）And second wave filter（5）Output end be connected respectively with joint, remaining
4 3db electric bridges（4）Output end be connected with joint.
2. the POI (Point Of Interface) according to claim 1 for subway communication, it is characterised in that：It is described and double
Frequency combiner（6）Connected 3db electric bridges（4）On be connected with isolator（7）.
3. the POI (Point Of Interface) according to claim 1 for subway communication, it is characterised in that：The cabinet
Housing（1）Interior both sides are further fixed on dividing plate（11）, the chassis shell body（1）Inside pass through dividing plate（11）Dividing has three accommodating chambers,
Eight frequency combiner（2）It is installed in the accommodating chamber of both sides.
4. the POI (Point Of Interface) according to claim 1 for subway communication, it is characterised in that：The cabinet
Housing（1）Outer surface offers heat emission hole（12）.
5. the POI (Point Of Interface) according to claim 1 for subway communication, it is characterised in that：The cabinet
Housing（1）Leading flank is fixed with handle（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887610.7U CN207052733U (en) | 2017-07-20 | 2017-07-20 | A kind of POI (Point Of Interface) for subway communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887610.7U CN207052733U (en) | 2017-07-20 | 2017-07-20 | A kind of POI (Point Of Interface) for subway communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207052733U true CN207052733U (en) | 2018-02-27 |
Family
ID=61497216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720887610.7U Expired - Fee Related CN207052733U (en) | 2017-07-20 | 2017-07-20 | A kind of POI (Point Of Interface) for subway communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207052733U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450754A (en) * | 2018-12-26 | 2019-03-08 | 江苏贝孚德通讯科技股份有限公司 | A kind of modularization multi-system access platform |
| CN111653857A (en) * | 2020-04-27 | 2020-09-11 | 电子科技大学 | High-power capacity quasi-optical dual-frequency synthesizer based on optical interference principle |
| CN111740199A (en) * | 2020-07-14 | 2020-10-02 | 江苏贝孚德通讯科技股份有限公司 | Novel electric bridge combiner structure |
-
2017
- 2017-07-20 CN CN201720887610.7U patent/CN207052733U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450754A (en) * | 2018-12-26 | 2019-03-08 | 江苏贝孚德通讯科技股份有限公司 | A kind of modularization multi-system access platform |
| CN111653857A (en) * | 2020-04-27 | 2020-09-11 | 电子科技大学 | High-power capacity quasi-optical dual-frequency synthesizer based on optical interference principle |
| CN111653857B (en) * | 2020-04-27 | 2021-08-06 | 电子科技大学 | High-power capacity quasi-optical dual-frequency synthesizer based on optical interference principle |
| CN111740199A (en) * | 2020-07-14 | 2020-10-02 | 江苏贝孚德通讯科技股份有限公司 | Novel electric bridge combiner structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20200720 |