CN203466845U - GSM-R out-of-band signal filtering device - Google Patents
GSM-R out-of-band signal filtering device Download PDFInfo
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- CN203466845U CN203466845U CN201320560370.1U CN201320560370U CN203466845U CN 203466845 U CN203466845 U CN 203466845U CN 201320560370 U CN201320560370 U CN 201320560370U CN 203466845 U CN203466845 U CN 203466845U
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Abstract
The utility model provides a GSM-R out-of-band signal filtering device. The GSM-R out-of-band signal filtering device comprises main control equipment, a first transceiver and a first double-band-pass filter. The main control equipment is equipped with a first radio-frequency port, the first double-band-pass filter is serially connected between the first radio-frequency port and the first transceiver, and conduction frequency ranges of the first double-band-pass filter are 885MHz-889MHz and 930MHz-934MHz. A useless frequency range of 889MHz-930MHz is filtered, so intermodulation interference signals are reduced, the sensitivity of a receiver is increased, and the bit error rate is reduced at the same time.
Description
Technical field
The utility model belongs to railway wireless dispatching communication apparatus field, relates in particular to a kind of GSM-R out of band signal filtering device and filtering method.
Background technology
Communication is one of important leverage measure of safety of railway traffic, and GSM-R communication system is one of railway wireless communication Main Patterns.GSM-R standard derives from the GSM system of public network.
The GSM frequency point ranges of public network is: 885MHz～934MHz, the use frequency of the GSM-R equipment of railway is narrow, only has 885MHz～889MHz and 889MHz～934MHz, two sections of each 4MHz bandwidth.But first the equipment providing due to the whole set equipment supplier of railway GSM-R met the frequency band of public network, and concerning railway, useless frequency has also entered GSM-R equipment.Meanwhile, the existing filter of railway is also that 885MHz～934MHz band is logical.Because existing filter does not have filtering unwanted signal, GSM-R equipment also can receive these unwanted signals simultaneously, this can cause these signals useless for GSM-R also to enter GSM-R receive path, thereby causes various interference, affects the normal operation of communication equipment.Especially in the developed regions such as coastal, public network arrangement of base stations density is very large, and it is more obvious that this problem embodies, and has been found that GSM-R communication often has indescribable reason, causes communication normally to carry out in part railway of passengers' private line.
Utility model content
The utility model is to provide a kind of GSM-R out of band signal filtering device, with the unwanted signal between 889MHz～930MHz in the above-mentioned prior art of filtering.
A GSM-R out of band signal filtering device, comprising: main control device, the first transceiver, the first dual band pass filter;
Described main control device is with the first prevention at radio-frequency port;
Described the first dual band pass filter is serially connected between described the first prevention at radio-frequency port and described the first transceiver;
Described the first dual band pass filter by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range.
Also comprise: the second dual band pass filter and the second transceiver;
Described main control device is also with the second prevention at radio-frequency port, and described the second dual band pass filter is serially connected between described the second prevention at radio-frequency port and the second transceiver;
Described the second dual band pass filter by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range.
The utility model also provides a kind of GSM-R out of band signal filtering device, comprising: main control device, the first transceiver, the first dual band pass filter, first single band pass filter and second single band pass filter;
Described main control device is with the first prevention at radio-frequency port, the second prevention at radio-frequency port and the 3rd prevention at radio-frequency port;
Described the first dual band pass filter is serially connected between described the first prevention at radio-frequency port and described the first transceiver;
Described first single band pass filter is serially connected between described the second prevention at radio-frequency port and described the first transceiver;
Described second single band pass filter is serially connected between described the 3rd prevention at radio-frequency port and described the first transceiver.
Described the first dual band pass filter by frequency range, be 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
Described first single band pass filter by frequency range, be: 475MHz～469MHz frequency range;
Described second single band pass filter by frequency range, be: 821MHz～869MHz frequency range.
Also comprise; The second transceiver, the second dual band pass filter, the 3rd single band pass filter and the 4th single band pass filter;
Described main control device is also with the 4th prevention at radio-frequency port, the 5th prevention at radio-frequency port and the 6th prevention at radio-frequency port;
Described the second dual band pass filter is serially connected between described the 4th prevention at radio-frequency port and the second transceiver;
Described the 3rd single band pass filter is serially connected between described the 5th prevention at radio-frequency port and the second transceiver;
Described the 4th single band pass filter is serially connected between described the 6th prevention at radio-frequency port and the second transceiver.
Described the second dual band pass filter by frequency range, be 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
Described the 3rd single band pass filter by frequency range, be: 821MHz～869MHz frequency range;
Described the 4th single band pass filter by frequency range, be: 2400MHz～2483MHz frequency range.
Described the first dual band pass filter, described first single band pass filter, described second single band pass filter, described the second dual band pass filter, described the 3rd single band pass filter, described the 4th single band pass filter form the multiband mixer of six end inputs, two ends output;
Described the first dual band pass filter, described first single band pass filter and described second single band pass filter are the first filter unit, and its output connects, and is connected with described the first transceiver;
Described the second dual band pass filter, described the 3rd single band pass filter and the described the 4th but band pass filter is the second filter unit, its output connects, and is connected with described the second transceiver.
Multiband mixer, coupler or antenna that described the first transceiver and the second transceiver are at least one.
Described main control device is mobile console or base station equipment.
GSM-R out of band signal filtering device in the utility model, has the following advantages:
1, by described the first dual band pass filter and described the second dual band pass filter, by the frequency range in main signal and feedback signal, be the unwanted signal filtering between 889MHz～930MHz.
accompanying drawing explanation
A kind of GSM-R out of band signal of Fig. 1 filtering device structured flowchart;
The another kind of GSM-R out of band signal of Fig. 2 filtering device structured flowchart.
Embodiment
The following description and drawings illustrate specific embodiments of the present utility model fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise logic, logical order and other change.Embodiment only represents possible variation.Unless explicitly requested, otherwise independent step and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present utility model comprises the gamut of claims, and all obtainable equivalent of claims, and if in fact disclose the utility model that surpasses, not that the scope that will automatically limit this application is any single utility model or utility model design.
As shown in Figure 1, the utility model provides a kind of GSM-R out of band signal filtering device, comprising: main control device 101, the first dual band pass filter 104, the first transceiver 102;
On main control device 101 with the first prevention at radio-frequency port;
The first dual band pass filter 104 is serially connected between first prevention at radio-frequency port and the first transceiver 102 of main control device 101;
The first dual band pass filter 104 by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
For with GSM-R system be that multiple signals are gathered, the present embodiment adopts two paths of signals is gathered, preferred, also comprises: the second dual band pass filter 105 and the second transceiver 103;
Main control device 101 is also with the second prevention at radio-frequency port;
The second dual band pass filter 105 is serially connected between second prevention at radio-frequency port and the second transceiver 103 of main control device 101;
The second dual band pass filter 105 by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range.
As shown in Figure 2, the utility model also provides a kind of GSM-R out of band signal filtering device, comprising:
On main control device 201 with the first prevention at radio-frequency port, the second prevention at radio-frequency port and the 3rd prevention at radio-frequency port;
The first dual band pass filter 206 is serially connected between first prevention at radio-frequency port and the first transceiver 202 of main control device 201;
First single band pass filter 204 is serially connected between second prevention at radio-frequency port and the first transceiver 202 of main control device 201;
Second single band pass filter 205 is serially connected between the 3rd prevention at radio-frequency port and the first transceiver 202 of main control device 201;
Wherein, the single band pass filter 204 of the first dual band pass filter 206, first is connected with the output of second single band pass filter 205, for filtered signal is synthesized to a road;
The first dual band pass filter 206 by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
First single band pass filter 204 by frequency range, be: 475MHz～469MHz frequency range;
Second single band pass filter 205 by frequency range, be: 821MHz～869MHz frequency range.
For with GSM-R system be that multiple signals are gathered, the present embodiment adopts two paths of signals is gathered, preferably, also comprise: the second transceiver 203, the second dual band pass filter the 209, the 3rd single band pass filter 207 and the 4th single band pass filter 208.
On main control device 201 also with the 4th prevention at radio-frequency port, the 5th prevention at radio-frequency port and the 6th prevention at radio-frequency port;
The second dual band pass filter 209 is serially connected between the 4th prevention at radio-frequency port and the second transceiver 203 of main control device 201;
The 3rd single band pass filter 207 is serially connected between the 5th prevention at radio-frequency port and the second transceiver 203 of main control device 201;
The 4th single band pass filter 208 is serially connected between the 6th prevention at radio-frequency port and the second transceiver 203 of main control device 201;
Wherein, second dual band pass filter the 209, the 3rd single band pass filter 207 is connected with the output of the 4th single band pass filter 208, for filtered signal is synthesized to a road;
Preferably, the single band pass filter 205 of the single band pass filter 204, second of the first dual band pass filter 206, first, second dual band pass filter the 209, the 3rd single band pass filter 207 and the 4th single band pass filter 208 form multiband mixer;
Multiband mixer is six end inputs, and two ends export structure, comprising two filter units, is respectively the first filter unit, the second filter unit;
Wherein, the first filter unit consists of the single band pass filter 204 of the first dual band pass filter 206, first and second single band pass filter 205;
The second filter unit consists of the single band pass filter 207 of the second dual band pass filter 209, the three and the 4th single band pass filter 208;
Above-mentioned main control device is mobile console or base station equipment.
Above-mentioned the first transceiver is coupler or antenna.
Above-mentioned the second transceiver is coupler or antenna.
For each process of setting forth in the utility model embodiment, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. a GSM-R out of band signal filtering device, is characterized in that, comprising: main control device, the first transceiver, the first dual band pass filter;
Described main control device is with the first prevention at radio-frequency port;
Described the first dual band pass filter is serially connected between described the first prevention at radio-frequency port and described the first transceiver;
Described the first dual band pass filter by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range.
2. GSM-R out of band signal filtering device according to claim 1, is characterized in that, also comprises: the second dual band pass filter and the second transceiver;
Described main control device is also with the second prevention at radio-frequency port, and described the second dual band pass filter is serially connected between described the second prevention at radio-frequency port and the second transceiver;
Described the second dual band pass filter by frequency range, be: 885MHz～889MHz frequency range and 930MHz～934MHz frequency range.
3. a GSM-R out of band signal filtering device, is characterized in that, comprising: main control device, the first transceiver, the first dual band pass filter, first single band pass filter and second single band pass filter;
Described main control device is with the first prevention at radio-frequency port, the second prevention at radio-frequency port and the 3rd prevention at radio-frequency port;
Described the first dual band pass filter is serially connected between described the first prevention at radio-frequency port and described the first transceiver;
Described first single band pass filter is serially connected between described the second prevention at radio-frequency port and described the first transceiver;
Described second single band pass filter is serially connected between described the 3rd prevention at radio-frequency port and described the first transceiver.
4. GSM-R out of band signal filtering device according to claim 3, is characterized in that,
Described the first dual band pass filter by frequency range, be 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
Described first single band pass filter by frequency range, be: 475MHz～469MHz frequency range;
Described second single band pass filter by frequency range, be: 821MHz～869MHz frequency range.
5. GSM-R out of band signal filtering device according to claim 3, is characterized in that, also comprises; The second transceiver, the second dual band pass filter, the 3rd single band pass filter and the 4th single band pass filter;
Described main control device is also with the 4th prevention at radio-frequency port, the 5th prevention at radio-frequency port and the 6th prevention at radio-frequency port;
Described the second dual band pass filter is serially connected between described the 4th prevention at radio-frequency port and the second transceiver;
Described the 3rd single band pass filter is serially connected between described the 5th prevention at radio-frequency port and the second transceiver;
Described the 4th single band pass filter is serially connected between described the 6th prevention at radio-frequency port and the second transceiver.
6. GSM-R out of band signal filtering device according to claim 5, is characterized in that, described the second dual band pass filter by frequency range, be 885MHz～889MHz frequency range and 930MHz～934MHz frequency range;
Described the 3rd single band pass filter by frequency range, be: 821MHz～869MHz frequency range;
Described the 4th single band pass filter by frequency range, be: 2400MHz～2483MHz frequency range.
7. GSM-R out of band signal filtering device according to claim 5, it is characterized in that, described the first dual band pass filter, described first single band pass filter, described second single band pass filter, described the second dual band pass filter, described the 3rd single band pass filter, described the 4th single band pass filter form the multiband mixer of six end inputs, two ends output;
Described the first dual band pass filter, described first single band pass filter and described second single band pass filter are the first filter unit, and its output connects, and is connected with described the first transceiver;
Described the second dual band pass filter, described the 3rd single band pass filter and described the 4th single band pass filter are the second filter unit, and its output connects, and is connected with described the second transceiver.
8. according to GSM-R out of band signal filtering device described in claim 2,5,6 or 7 any one, it is characterized in that multiband mixer, coupler or antenna that described the first transceiver and the second transceiver are at least one.
9. according to GSM-R out of band signal filtering device described in claim 1 to 7 any one, it is characterized in that, described main control device is mobile console or base station equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560370.1U CN203466845U (en) | 2013-09-10 | 2013-09-10 | GSM-R out-of-band signal filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560370.1U CN203466845U (en) | 2013-09-10 | 2013-09-10 | GSM-R out-of-band signal filtering device |
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| Publication Number | Publication Date |
|---|---|
| CN203466845U true CN203466845U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320560370.1U Expired - Lifetime CN203466845U (en) | 2013-09-10 | 2013-09-10 | GSM-R out-of-band signal filtering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009767A (en) * | 2014-04-23 | 2014-08-27 | 南京泰通科技有限公司 | GSM-R base station with high interference signal restraining capability |
| CN107786213A (en) * | 2017-11-02 | 2018-03-09 | 深圳市桑达无线通讯技术有限公司 | A kind of device for lifting interference free performance |
-
2013
- 2013-09-10 CN CN201320560370.1U patent/CN203466845U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009767A (en) * | 2014-04-23 | 2014-08-27 | 南京泰通科技有限公司 | GSM-R base station with high interference signal restraining capability |
| CN104009767B (en) * | 2014-04-23 | 2016-08-10 | 南京泰通科技股份有限公司 | A kind of GSM-R base station with interference signal height suppression |
| CN107786213A (en) * | 2017-11-02 | 2018-03-09 | 深圳市桑达无线通讯技术有限公司 | A kind of device for lifting interference free performance |
| CN107786213B (en) * | 2017-11-02 | 2019-07-30 | 深圳市桑达无线通讯技术有限公司 | A kind of device promoting interference free performance |
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Granted publication date: 20140305 |