CN205028992U - Improve POI delivery outlet return loss's link structure - Google Patents
Improve POI delivery outlet return loss's link structure Download PDFInfo
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- CN205028992U CN205028992U CN201520858680.0U CN201520858680U CN205028992U CN 205028992 U CN205028992 U CN 205028992U CN 201520858680 U CN201520858680 U CN 201520858680U CN 205028992 U CN205028992 U CN 205028992U
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- input port
- circulator module
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- return loss
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Abstract
The utility model relates to an improve POI delivery outlet return loss's link structure, first circulator module has an input port, and its two output port links to each other with an input port of a 3dB electric bridge module and an input port of the 2nd 3dB electric bridge module respectively, second circulator module has an input port, and its two output port links to each other with another input port of a 3dB electric bridge module and another input port of the 2nd 3dB electric bridge module respectively, two output port of a 3dB electric bridge module link to each other with an input port of third circulator module and an input port of fourth circulator module respectively, two output port of the 2nd 3dB electric bridge module link to each other with another input port of third circulator module and another input port of fourth circulator module respectively, third circulator module and fourth circulator module all have an output port. Ingenious matching link design makes POI antenna output mouth return loss improve greatly.
Description
Technical field
The utility model relates to a kind of link structure improving POI delivery outlet return loss, belongs to microwave telecommunication devices technical field.
Background technology
POI is a multisystem mixing platform, the signal of FDD and TDD system can be closed road, link design often needs to carry out combination with 3dB bridge modules and narrow band filter and closes road, in order to POI antenna delivery outlet has good return loss, usually need to install isolator additional in 3dB bridge modules input port and carry out Broadband Matching.But for the system of TDD mode, as LTE system, due to receiving and transmitting signal stream, to be that timesharing changes nyctitropic, and inconvenience uses isolator, and make the POI system matches difficulty comprising TDD standard, POI antenna delivery outlet return loss worsens.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art existence, provides a kind of link structure improving POI delivery outlet return loss.
The purpose of this utility model is achieved through the following technical solutions:
Improve the link structure of POI delivery outlet return loss, feature is: comprise four circulator modules and two 3dB bridge modules, first circulator module has an input port, and its two output port is connected with an input port of the 2nd 3dB bridge modules with an input port of a 3dB bridge modules respectively;
Second circulator module has an input port, and its two output port is connected with another input port of the 2nd 3dB bridge modules with another input port of a 3dB bridge modules respectively;
Two output ports of the one 3dB bridge modules are connected with an input port of the 4th circulator module with an input port of the 3rd circulator module respectively;
Two output ports of the 2nd 3dB bridge modules are connected with another input port of the 4th circulator module with another input port of the 3rd circulator module respectively;
3rd circulator module and the 4th circulator module all have an output port.
Further, the link structure of above-mentioned raising POI delivery outlet return loss, wherein, described first circulator module and the second circulator module are SMT surface-adhered type circulator module.
Further, the link structure of above-mentioned raising POI delivery outlet return loss, wherein, described 3rd circulator module and the 4th circulator module are SMT surface-adhered type circulator module.
Again further, the link structure of above-mentioned raising POI delivery outlet return loss, wherein, a described 3dB bridge modules and the 2nd 3dB bridge modules are SMT surface-adhered type bridge modules.
The substantive distinguishing features that technical solutions of the utility model are outstanding and significant progress are mainly reflected in:
Mating link design cleverly makes POI antenna delivery outlet return loss greatly improve, effectively prevent the inconvenience of TDD standard to install isolator additional to carry out mating and the delivery outlet return loss deterioration problem that causes, make whole POI system matched well in whole passband, thus effectively improve POI antenna delivery outlet return loss.Have structure simple, be easy to manufacture, stable performance, cost is low, is applicable to the features such as large-scale production simultaneously.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model.
Embodiment
As shown in Figure 1, improve the link structure of POI delivery outlet return loss, comprise four circulator modules and two 3dB bridge modules, first circulator module 101 has an input port A1, and its two output port is connected with an input port of the 2nd 3dB bridge modules 202 with an input port of a 3dB bridge modules 201 respectively; Second circulator module 102 has an input port A2, and its two output port is connected with another input port of the 2nd 3dB bridge modules 202 with another input port of a 3dB bridge modules 201 respectively; Two output ports of the one 3dB bridge modules 201 are connected with an input port of the 4th circulator module 104 with an input port of the 3rd circulator module 103 respectively; Two output ports of the 2nd 3dB bridge modules 202 are connected with another input port of the 4th circulator module 104 with another input port of the 3rd circulator module 103 respectively; 3rd circulator module 103 has an output port C1, and the 4th circulator module 104 has an output port C2.
Wherein, the first circulator module 101 and the second circulator module 102 are PCB SMT surface-adhered type circulator module.3rd circulator module 103 and the 4th circulator module 104 are PCB SMT surface-adhered type circulator module.One 3dB bridge modules 201 and the 2nd 3dB bridge modules 202 are PCB SMT surface-adhered type bridge modules.
First adopt circulator module to be opened by receiving and transmitting signal flow point, then pass through 3dB bridge modules by equidirectional signal combination, and then by circulator module again by transmitting-receiving synthesis one road duplex simultaneous two-way signal.Such coupling link design makes POI antenna delivery outlet return loss greatly improve, and representative value is that return loss is increased to 18dB by original 6dB, effectively prevents that isolator coupling is installed in the inconvenience of TDD standard additional and the delivery outlet return loss that causes worsens.
This design chain route circulator module and isolator module mixing composition, for mating the POI link containing TDD system, efficiently solve and can not install isolator additional in TDD link and the problem causing POI antenna delivery outlet return loss extreme difference, make whole POI system matched well in whole passband, thus effectively improve POI antenna delivery outlet return loss.
Mating link design cleverly makes POI antenna delivery outlet return loss greatly improve, and effectively prevents the inconvenience of TDD standard to install isolator additional and carries out mating and the delivery outlet return loss deterioration problem that causes.Have structure simple, be easy to manufacture, stable performance, cost is low, is applicable to the features such as large-scale production simultaneously.
It is to be understood that: the above is only preferred implementation of the present utility model; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. improve the link structure of POI delivery outlet return loss, it is characterized in that: comprise four circulator modules and two 3dB bridge modules, first circulator module has an input port, and its two output port is connected with an input port of the 2nd 3dB bridge modules with an input port of a 3dB bridge modules respectively;
Second circulator module has an input port, and its two output port is connected with another input port of the 2nd 3dB bridge modules with another input port of a 3dB bridge modules respectively;
Two output ports of the one 3dB bridge modules are connected with an input port of the 4th circulator module with an input port of the 3rd circulator module respectively;
Two output ports of the 2nd 3dB bridge modules are connected with another input port of the 4th circulator module with another input port of the 3rd circulator module respectively;
3rd circulator module and the 4th circulator module all have an output port.
2. the link structure of raising POI delivery outlet return loss according to claim 1, is characterized in that: described first circulator module and the second circulator module are SMT surface-adhered type circulator module.
3. the link structure of raising POI delivery outlet return loss according to claim 1, is characterized in that: described 3rd circulator module and the 4th circulator module are SMT surface-adhered type circulator module.
4. the link structure of raising POI delivery outlet return loss according to claim 1, is characterized in that: a described 3dB bridge modules and the 2nd 3dB bridge modules are SMT surface-adhered type bridge modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858680.0U CN205028992U (en) | 2015-10-30 | 2015-10-30 | Improve POI delivery outlet return loss's link structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858680.0U CN205028992U (en) | 2015-10-30 | 2015-10-30 | Improve POI delivery outlet return loss's link structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028992U true CN205028992U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520858680.0U Expired - Fee Related CN205028992U (en) | 2015-10-30 | 2015-10-30 | Improve POI delivery outlet return loss's link structure |
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| CN (1) | CN205028992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244584A (en) * | 2015-10-30 | 2016-01-13 | 世达普(苏州)通信设备有限公司 | Link structure capable of improving return loss of POI output port |
-
2015
- 2015-10-30 CN CN201520858680.0U patent/CN205028992U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244584A (en) * | 2015-10-30 | 2016-01-13 | 世达普(苏州)通信设备有限公司 | Link structure capable of improving return loss of POI output port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20181030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |