CN105244584A - Link structure capable of improving return loss of POI output port - Google Patents
Link structure capable of improving return loss of POI output port Download PDFInfo
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- CN105244584A CN105244584A CN201510726058.9A CN201510726058A CN105244584A CN 105244584 A CN105244584 A CN 105244584A CN 201510726058 A CN201510726058 A CN 201510726058A CN 105244584 A CN105244584 A CN 105244584A
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Abstract
The invention relates to a link structure capable of improving return loss of a POI output port. A first circulator module has an input port; and two output ports are connected with one input port of a first 3dB bridge module and one input port of a second 3db bridge module. A second circulator module has an input port; and two output ports are connected with the other input port of the first 3dB bridge module and the other input port of the second 3dB bridge module. Two output ports of the first 3dB bridge module are connected with one input port of a third circulator module and one input port of a fourth circulator module; and two output ports of the second 3db bridge module are connected with the other input port of the third circulator module and the other input port of the fourth circulator module. The third circulator module and the fourth circulator module are provided with output ports. On the basis of the ingenious matching link design, the return loss of the POI antenna output port is substantially improved.
Description
Technical field
The present invention relates to a kind of link structure improving POI delivery outlet return loss, belong 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.
Summary of the invention
The object of the invention is the deficiency overcoming prior art existence, a kind of link structure improving POI delivery outlet return loss is provided.
Object of the present invention 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 solution of the present invention is 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 invention.
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 the preferred embodiment of the present invention; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
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 |
|---|---|---|---|
| CN201510726058.9A CN105244584A (en) | 2015-10-30 | 2015-10-30 | Link structure capable of improving return loss of POI output port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510726058.9A CN105244584A (en) | 2015-10-30 | 2015-10-30 | Link structure capable of improving return loss of POI output port |
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| Publication Number | Publication Date |
|---|---|
| CN105244584A true CN105244584A (en) | 2016-01-13 |
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| CN201510726058.9A Pending CN105244584A (en) | 2015-10-30 | 2015-10-30 | Link structure capable of improving return loss of POI output port |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10708729B2 (en) * | 2018-09-18 | 2020-07-07 | Alibaba Group Holding Limited | Outputting an entry point to a target service |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546035A (en) * | 2010-12-10 | 2012-07-04 | 中国移动通信集团广东有限公司 | Signal interference suppression device |
| CN202772254U (en) * | 2012-09-14 | 2013-03-06 | 杭州冠腾网络技术有限公司 | Low intermodulation high isolation co-frequency path-combining unit |
| US20130271232A1 (en) * | 2012-04-14 | 2013-10-17 | Electronics Research, Inc. | Ganged circulator device |
| CN205028992U (en) * | 2015-10-30 | 2016-02-10 | 世达普(苏州)通信设备有限公司 | Improve POI delivery outlet return loss's link structure |
-
2015
- 2015-10-30 CN CN201510726058.9A patent/CN105244584A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546035A (en) * | 2010-12-10 | 2012-07-04 | 中国移动通信集团广东有限公司 | Signal interference suppression device |
| US20130271232A1 (en) * | 2012-04-14 | 2013-10-17 | Electronics Research, Inc. | Ganged circulator device |
| CN202772254U (en) * | 2012-09-14 | 2013-03-06 | 杭州冠腾网络技术有限公司 | Low intermodulation high isolation co-frequency path-combining unit |
| CN205028992U (en) * | 2015-10-30 | 2016-02-10 | 世达普(苏州)通信设备有限公司 | Improve POI delivery outlet return loss's link structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10708729B2 (en) * | 2018-09-18 | 2020-07-07 | Alibaba Group Holding Limited | Outputting an entry point to a target service |
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Application publication date: 20160113 |
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