CN112350040A

CN112350040A - LTE multi-frequency combiner system

Info

Publication number: CN112350040A
Application number: CN202011206055.XA
Authority: CN
Inventors: 高红; 高中有; 杨世朝
Original assignee: Sichuan Tianyi Comheart Telecom Co Ltd
Current assignee: Sichuan Tianyi Comheart Telecom Co Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-02-09

Abstract

The invention relates to the technical field of communication, and aims to provide an LTE multi-frequency combiner system which comprises a plurality of signal input ports, a plurality of electric bridge combiners, a plurality of combiners, a load and an antenna interface, wherein the electric bridge combiners are connected with the antenna interface through the combiners, each electric bridge combiner comprises a first input end and a second input end, the first input end of each electric bridge combiner is connected with a signal input end, and the second input end of each electric bridge combiner selects a signal input end or a load output end.

Description

LTE multi-frequency combiner system

Technical Field

The invention relates to the technical field of communication, in particular to an LTE multi-frequency combiner system.

Background

The LTE multi-frequency combining system is used for combining carrier frequency signals of different frequency bands from base stations of various mobile operators and sending the carrier frequency signals to a shared antenna feeder distribution system, has the advantages of no additional noise, simple equipment operation and maintenance, low failure rate and the like, does not adopt active equipment for an indoor POI combining platform, and mainly comprises passive devices such as a broadband bridge combiner, a multi-frequency band combiner, a load and the like.

1. The indoor combiner system is in a modular design.

2. The indoor combiner is one of key devices of the system and can be divided into an uplink unit and a downlink unit.

3. The indoor type combining system uplink unit has the main functions that signals sent by mobile phones of different standards are transmitted to the indoor type combining system uplink unit through the collection of antenna feeders and the transmission of feeders, and the signals of different frequency bands are detected by the combining system and then are transmitted to different operator base stations; the main function of the downlink unit of the combining system is to synthesize carrier signals of different frequency bands of each operator and send the synthesized carrier signals to a shared antenna feed system.

4. Through reasonable design, the indoor combiner system uses the load to the minimum extent, so that the insertion loss of the system is reduced to the minimum.

And 5, the LTE considers double flows, and the POI output end supports uplink and downlink signals of the LTE.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an LTE multi-frequency combiner system which can combine 4 channel signals and is provided with two signal output ports, so that the requirement of MIMO networking dual channels in LTE network construction can be met.

The purpose of the invention is realized by the following technical scheme: an LTE multi-frequency combiner system comprises a plurality of signal access ends, a plurality of electric bridge combiners, a plurality of combiners, a load and an antenna interface, wherein the electric bridge combiners are connected with the antenna interface through the combiners, each electric bridge combiner comprises a first input end and a second input end, the first input end of each electric bridge combiner is connected with the signal access end, the second input end of each electric bridge combiner selects the signal access end or the load output end, the number of the signal access ends is four, the combiners select three-frequency combiners, and each electric bridge combiner is respectively connected with two three-frequency combiners,

the three-frequency combiner comprises a cavity, a signal output port is arranged at the front end of the cavity, three signal input ports are arranged at the rear end of the cavity, three filtering cavities are correspondingly arranged in the cavity, a plurality of resonant columns are distributed in the three filtering cavities, two public resonant columns are arranged in the resonant columns, a public port is connected with the two public resonant columns and the signal output port, and any two resonant columns except the two public resonant columns in the cavity are connected.

Preferably, two clapboards are arranged on a bottom plate of the cavity, and the cavity is divided into the three filtering cavities by the two clapboards and the inner wall of the cavity.

Preferably, form first filtering cavity, second filtering cavity and third filtering cavity in the cavity, first filtering cavity with first public resonance post has between the second filtering cavity, second filtering cavity with the third filtering cavity has the public resonance post of second, the both ends of common port respectively with first public resonance post, the public resonance post coupling of second are connected for communicate each other between each filtering cavity.

Preferably, one of the signal access terminals is selected as an input port for communicating LTE1.8G signals.

Preferably, one of the signal access terminals is selected as an input port of a telecommunication FDD-LTE 2.1G signal.

Preferably, one of the signal access terminals is selected as an input port of a mobile TD-lte (e)2.3G frequency band signal.

Preferably, one of the signal access terminals is an input port for communicating WCDMA frequency band signals.

Preferably, the three-port combiner is a 1.8G, 2.1G or 2.3G three-port combiner.

The invention has the beneficial effects that: the invention provides an LTE multi-frequency combiner system which can combine 4 channel signals and is provided with two signal output ports, and the requirement of MIMO networking dual channels in LTE network construction can be met.

(1) The invention can meet the combination of signals of 4 frequency bands, and can achieve the combination of signals with more than 4 frequencies through system expansion;

(2) the invention has two signal output ports, and can meet the requirement of MIMO networking dual channels in LTE network construction;

(3) the invention adopts the modular design, has good capacity expansion performance and convenient maintenance, and can meet the requirements of different systems/frequency bands.

Drawings

Fig. 1 is a block diagram of an LTE multi-frequency combiner system according to the present invention;

fig. 2 is a structural diagram of the three-frequency combiner of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to fig. 1 to 2 of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other implementations made by those of ordinary skill in the art based on the embodiments of the present invention are obtained without inventive efforts.

In the description of the present invention, it is to be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting.

As shown in fig. 1, an LTE multi-frequency combiner system includes a plurality of signal access terminals, a plurality of bridge combiners, a plurality of combiners, a load and an antenna interface, wherein the bridge combiners are connected to the antenna interface through the combiner, each bridge combiner includes a first input terminal and a second input terminal, the first input terminal of the bridge combiner is connected to the signal access terminal, the second input terminal of the bridge combiner selects the signal access terminal or the load output terminal, the number of the signal access terminals is four, the combiner selects a three-frequency combiner, each bridge combiner is respectively connected to two three-frequency combiners,

The improved filter is characterized in that two partition plates are arranged on a bottom plate of the cavity, the two partition plates and the inner wall of the cavity divide the cavity into three filter cavities, a first filter cavity, a second filter cavity and a third filter cavity are formed in the cavity, a first public resonance column is arranged between the first filter cavity and the second filter cavity, a second public resonance column is arranged between the second filter cavity and the third filter cavity, and two ends of a public port are respectively in coupling connection with the first public resonance column and the second public resonance column so that the filter cavities are communicated with one another.

It should be noted that one of the signal access terminals is selected as an input port for communicating LTE1.8G signals, one of the signal access terminals is selected as an input port for telecommunication FDD-LTE 2.1G signals, one of the signal access terminals is selected as an input port for mobile TD-LTE (e)2.3G frequency band signals, one of the signal access terminals is selected as an input port for communicating WCDMA frequency band signals, and the three-port combiner is a 1.8G, 2.1G and 2.3G three-port combiner.

It should be noted that like element numbers in the figures represent like elements. As described above, the invention provides a three-frequency combiner, and a metal rod wave trap is further arranged on a cavity of the three-frequency combiner, and the metal rod wave trap is connected with any two resonance columns except the two common resonance columns; the metal rod wave trap can enhance the coupling between signals in the three-frequency combiner, and the whole three-frequency combiner is simple in structure and low in cost.

Referring to fig. 1 and fig. 2, an embodiment of the triple-band combiner of the present invention includes a cavity 10, a signal output port 20 is disposed at a front end of the cavity 10, and three signal input ports, namely, a GSM signal input port 30, a CDMA signal input port 40, and a WLAN signal input port 50, are disposed at a rear end of the cavity 10.

Specifically, two

partition plates

102 and 103 are arranged on a bottom plate 101 of the cavity 10, and the cavity 10 is divided into the three filter cavities by the two

partition plates

102 and 103 and the inner wall of the cavity 10. Wherein the first filter cavity 104 corresponds to GSM signals, the second filter cavity 105 corresponds to CDMA signals, and the third filter cavity 106 corresponds to WLAN signals. The first filter chamber 104 is formed by the partition plate 102 and the inner wall of the chamber 10, the second filter chamber 105 is formed by the partition plate 102 and the partition plate 103, and the third filter chamber 106 is formed by the partition plate 103 and the inner wall of the chamber 10.

A plurality of resonant columns are arranged in each filter cavity, a first common resonant column 1041 is arranged between the first filter cavity 104 and the second filter cavity 105, and a second common resonant column 1051 is arranged between the second filter cavity 105 and the third filter cavity 106. The first filter cavity 104 is composed of eleven common resonant columns 1042 and a first common resonant column 1041, the second filter cavity 105 is composed of eight common resonant columns 1042 and a first common resonant column 1041, and the third filter cavity 106 is composed of four common resonant columns 1042 and a second common resonant column 1051. The three

signal input ports

30, 40, 50 are connected to the resonant columns in the

filter cavities

104, 105, 106 by coupling wires 60, respectively.

The cavity 10 is further provided with a common port 107 and a metal rod trap 108, the common port 107 enables the filter cavities to be communicated with each other, two ends of the common port 107 are respectively coupled with the first common resonance column 1041 and the second common resonance column 1051, and the common port 107 is further connected with the signal output port 20.

The LTE multi-frequency combining system can combine signals of 4 channels, can combine signals of more than 4 frequencies by expansion, has two signal output ports, and can meet the requirement of MIMO networking dual channels in LTE network construction. The requirements of the multi-band signal combining and dual-port antenna feeder network of the new generation of LTE mobile communication are met.

Claims

1. An LTE multi-frequency combiner system is characterized by comprising a plurality of signal access ends, a plurality of bridge combiners, a plurality of combiners, a load and an antenna interface, wherein the bridge combiners are connected with the antenna interface through the combiners, each bridge combiner comprises a first input end and a second input end, the first input end of each bridge combiner is connected with the signal access end, the second input end of each bridge combiner selects the signal access end or the load output end, the number of the signal access ends is four, the combiners select three-frequency combiners, each bridge combiner is respectively connected with two three-frequency combiners, each three-frequency combiner comprises a cavity, the front end of each cavity is provided with a signal output end, the rear end of each cavity is provided with three signal input ports, three filter cavities are correspondingly arranged in the cavities, and a plurality of resonant columns are distributed in the three filter cavities, the resonant columns are provided with two public resonant columns, a public port is connected with the two public resonant columns and the signal output port, and any two resonant columns except the two public resonant columns in the cavity are connected.

2. The LTE multi-frequency combiner system of claim 1, wherein two partition plates are disposed on a bottom plate of the cavity, and the two partition plates and an inner wall of the cavity divide the cavity into the three filter cavities.

3. The LTE multi-frequency combiner system of claim 2, wherein a first filter cavity, a second filter cavity and a third filter cavity are formed in the cavity, a first common resonant column is disposed between the first filter cavity and the second filter cavity, a second common resonant column is disposed between the second filter cavity and the third filter cavity, and two ends of the common port are respectively coupled to the first common resonant column and the second common resonant column, so that the filter cavities are communicated with each other.

4. The LTE multi-frequency combiner system of claim 3, wherein one of the signal access terminals is selected to be an input port for a Unicom LTE1.8G signal.

5. The LTE multi-frequency combiner system of claim 3, wherein one of the signal access terminals is selected to be an input port for a telecommunication FDD-LTE 2.1G signal.

6. The LTE multi-frequency combiner system of claim 3, wherein one of the signal access ports is selected to be an input port for a mobile TD-LTE (E)2.3G frequency band signal.

7. The LTE multi-frequency combiner system of claim 3, wherein one of the signal access ports is selected to be an input port for communicating WCDMA band signals.

8. The LTE multi-frequency combiner system of claim 3, wherein the three-frequency combiner is a 1.8G, 2.1G, and 2.3G three-port combiner.