CN208939956U - Single cable MIMO signal transmitting device - Google Patents
Single cable MIMO signal transmitting device Download PDFInfo
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- CN208939956U CN208939956U CN201822141896.1U CN201822141896U CN208939956U CN 208939956 U CN208939956 U CN 208939956U CN 201822141896 U CN201822141896 U CN 201822141896U CN 208939956 U CN208939956 U CN 208939956U
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Abstract
The utility model discloses single cable MIMO signal transmitting devices, it is arranged on the cable between signal transmitting terminal and antenna, including sequentially connected combiner, frequency mixer and filter, the filter is connected with cable, and the input terminal of the frequency mixer is connected with a local oscillator chip.List cable MIMO signal transmitting device described in being equipped with two groups on cable between signal transmitting terminal and antenna, wherein first group of list cable MIMO signal transmitting device setting emits end side in signal, second group of list cable MIMO signal transmitting device is arranged in antenna side, single cable MIMO signal transmission method, bypass signal transmits in cable after frequency mixer frequency conversion, because frequency conversion is other frequencies, it is mutually independent of each other so transmitting MIMO signal in the same feeder line, to after antenna side, bypass frequency variation signal is original frequency through frequency mixer frequency conversion, launched by antenna, realize single cable MIMO double-stream mode.
Description
Technical field
The utility model belongs in the field of communication, and in particular to single cable MIMO signal transmitting device.
Background technique
Currently, the use of indoor flow substantially increases, and each operator takes up in-door covering with the granting of 5G licence plate
Construction, 5G will use signal compared with 4G higher frequency, it is meant that space loss increases, and penetration capacity is deteriorated, and shows after actual measurement, 5G letter
Number transmission in 7/8 feeder line (length about 100m), attenuation increases during this cable transmission compared to 900MHz is about
Hundred meters of 4.1dB/；It is about 0.4dB/ that the pad value of combiner, which increases,；In addition the complexity of room time-sharing environment, link load is excessive,
Also increase the difficulty of in-door covering.
Multi-standard RRU+DAS system in existing in-door covering scheme, have it is reliable and stable, cost is low compared with base station, can prop up
2G+3G+4G is held, radio frequency connection, information source requires low；Photoelectric mixed cable transmission, but disadvantage is also evident from: and capacity is low, and dilatation is difficult,
Failure is difficult to monitor, and needing to construct again is laid with photoelectric mixed cable or surpasses 5 class lines, property difficult coordination.
The characteristics of novel covering scheme such as Lampsite or Qcell is optical fiber or cable connection, and reliable and stable, maximum can
Support 4T4R；It is laid with optical fiber or cable the disadvantage is that needing to construct again, needs power supplied locally, power is lower, and 5G high frequency attenuation
Greatly, penetration power is poor, works under complex environment indoors, and single area coverage is small, and unit area covers cost highest；According to actual measurement
Power consumption is about 40W to every Lampsite under normal operation, increases the power cost of great number, and meeting cover strip
It needs to increase matched power supply system under part.
In view of this, special propose the utility model.
Utility model content
The purpose of the utility model is to provide a kind of single cable MIMO signal transmitting devices, solve in single line cable and transmit together
The double-current problem of frequency, makes 4G and 5G transmit MIMO signal in conventional wire cable simultaneously, enhances downloading rate, improves user and perceives effect
Fruit, solves the Utilizing question of old coaxial network for no reason at all, at the same during solving 5G signal list cable MIMO transmission 5G in cable
The excessive problem of middle transmission loss.
To achieve the goals above, a kind of single cable MIMO signal transmitting device provided by the utility model, is arranged in signal
On cable between transmitting terminal and antenna, including sequentially connected combiner, frequency mixer and filter, the filter and cable
It is connected, the input terminal of the frequency mixer is connected with a local oscillator chip.
Preferably, equipped with the transmission dress of list cable MIMO signal described in two groups on the cable between signal transmitting terminal and antenna
It sets.
Further, the setting of list cable MIMO signal transmitting device described in first group emits end side, the letter in the signal
The output end of number transmitting terminal connects the input terminal of the combiner, and the output end of the combiner connects the input of the frequency mixer
End, the output end of the frequency mixer connect the input terminal of the filter, the output end connection cables of the filter.
Further, the setting of list cable MIMO signal transmitting device described in second group is in the antenna side, described in cable connection
The input terminal of filter, the output end of the filter connect the input terminal of the frequency mixer, and the output end of the frequency mixer connects
The input terminal of the combiner is connect, the output end of the combiner connects the antenna.
Preferably, the signal transmitting terminal output 4G signal and/or 5G signal.
List cable MIMO signal transmitting device provided by the utility model, has the following beneficial effects:
1, signal transmits in cable after frequency mixer frequency conversion, because frequency conversion is other frequencies, so in the same feeder line
Transmission MIMO signal is mutually independent of each other, and to after antenna side, frequency variation signal is original frequency through frequency mixer frequency conversion, is emitted by antenna
It goes out, realizes single cable MIMO double-stream mode, the speed of download for the user that is multiplied；
2, MIMO signal is transmitted using conventional wire cable, transformation network environment target can be reached by not needing rewiring,
That is 4G and 5G covers indoor environment simultaneously in the mimo mode, facilitates rebuilding construction；
3, cost is reduced, equipment power dissipation is reduced.
Detailed description of the invention
Fig. 1 is first group of list cable MIMO signal transmitting device that signal is arranged in present embodiment and emits end side
Structural schematic diagram.
Fig. 2 is that the structure for second group of list cable MIMO signal transmitting device that antenna side is arranged in present embodiment is shown
It is intended to.
Fig. 3 is that the structure that first group of list cable MIMO signal transmitting device that signal emits end side is arranged in of embodiment 1 is shown
It is intended to.
Fig. 4 is the structural schematic diagram of second group of list cable MIMO signal transmitting device that antenna side is arranged in of embodiment 1.
In figure:
1. 2. frequency mixer of combiner, 3. local oscillator chip, 4. filter.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, right With reference to embodiment
The utility model is described in further detail.
Two groups of list cables are arranged on the cable between signal transmitting terminal and antenna in a kind of list cable MIMO signal transmitting device
MIMO signal transmitting device, wherein first group of list cable MIMO signal transmitting device setting emits end side in signal, wherein second group
Single cable MIMO signal transmitting device is arranged in antenna side, and single cable MIMO signal transmitting device makes 4G and 5G simultaneously in conventional wire cable
MIMO signal is transmitted, single cable MIMO signal transmitting device includes sequentially connected combiner 1, frequency mixer 2 and filter 4, wherein
The input terminal of frequency mixer 2 connects the output end of a local oscillator chip 3；Filter 4 is connected with cable.
As shown in Figure 1, the combiner 1 that first group of list cable MIMO signal transmitting device of signal transmitting end side is arranged in receives
Two groups of signals of signal transmitting terminal transmission are respectively main road initial signal and bypass initial signal, and main road initial signal is different frequencies
The signal f1 and f2 of rate, bypass initial signal are also the signal f1 and f2 of different frequency, and main road initial signal is straight by combiner 1
It connects and is transported in cable, bypass initial signal is transported to frequency mixer 2 by combiner 1, and frequency mixer 2 is sent to using local oscillator chip 3
The local oscillation signal of frequency mixer 2 carries out frequency conversion to bypass initial signal f1 and f2 respectively, and bypass initial signal f1 and f2 distinguish frequency conversion
For bypass frequency variation signal f1 ' and f2 ', bypass frequency variation signal f1 ', f2 ' are transferred in cable after wave filter 4, deposit in cable
In signal f1, f2, f1 of four different frequencies ' and f2 ', it is noiseless from each other.
As shown in Fig. 2, main road is initially believed after main road initial signal f1, f2 and bypass frequency variation signal f1 ', f2 ' to antenna side
Number f1, f2 are launched by antenna；The filter 4 that second group of list cable MIMO signal transmitting device of antenna side is arranged in receives
Bypass frequency variation signal f1 ', f2 ', bypass frequency variation signal f1 ', f2 ' are transported to frequency mixer 2 by filter 4, and frequency mixer 2 uses local oscillator
The local oscillation signal that chip 3 is sent to frequency mixer 2 carries out frequency conversion, bypass frequency variation signal to bypass frequency variation signal f1 ' and f2 ' respectively
Frequency conversion is bypass final signal f1 and f2 identical with original bypass initial signal frequency to f1 ' and f2 ' respectively, and bypass is finally believed
Number antenna is transferred to by combiner 1, bypass final signal f1, f2 are launched by antenna, realize single cable MIMO double fluid mould
Formula, the speed of download for the user that is multiplied.
Single cable MIMO signal transmission method uses two groups of list cables being arranged on the cable between signal transmitting terminal and antenna
MIMO signal transmitting device, wherein first group of list cable MIMO signal transmitting device setting emits end side, second group of list cable in signal
MIMO signal transmitting device is arranged in antenna side, includes the following steps:
It is respectively that main road is initial that the combiner 1 of (1) first group of list cable MIMO signal transmitting device, which receives two groups of initial signals,
Signal and bypass initial signal, and bypass initial signal is transported to the mixing of first group of list cable MIMO signal transmitting apparatus
Main road initial signal is delivered directly in cable by device 2；
The frequency mixer 2 of (2) first groups of list cable MIMO signal transmitting devices is sent to first group of list cable using local oscillator chip 3
The local oscillation signal of the frequency mixer 2 of MIMO signal transmitting device carries out frequency conversion to bypass initial signal, obtains bypass frequency variation signal；
(3) the bypass frequency variation signal that step (2) obtains is passed by the filter 4 of first group of list cable MIMO signal transmitting device
It is defeated to arrive cable.
The filter 4 of (4) second groups of list cable MIMO signal transmitting devices receives bypass frequency variation signal and by bypass frequency conversion
Signal is transported to the frequency mixer 2 of second group of list cable MIMO signal transmitting device；
The frequency mixer 2 of (5) second groups of list cable MIMO signal transmitting devices is sent to second group of list cable using local oscillator chip 3
The local oscillation signal of the frequency mixer 2 of MIMO signal transmitting device carries out frequency conversion to bypass frequency variation signal, obtains at the beginning of with original bypass
The identical bypass final signal of beginning signal frequency；
(6) the bypass final signal that step (5) obtains is passed by the combiner 1 of second group of list cable MIMO signal transmitting device
Defeated to arrive antenna, the main road initial signal in bypass final signal and cable is launched by antenna, realizes single cable MIMO double fluid
Mode, the speed of download for the user that is multiplied.
Embodiment 1
As shown in figure 3, by signal transmitting terminal in the existing net of single cable MIMO signal transmitting device of 4GRRU and 5GRRU access and
It, can simultaneous transmission MIMO signal by frequency conversion on cable between antenna.The 4G of main road initial signal and bypass initial signal
Signal is 2345MHz, and the 5G signal of main road initial signal and bypass initial signal is 3.5GHz, local oscillation signal 500MHz；It is main
Road initial signal is directly transferred to cable by combiner 1；Frequency mixer 2 is using local oscillation signal to the bypass 4G for being delivered to frequency mixer 2
Signal carries out up-converting to 2845MHz, and frequency mixer 2 carries out down the bypass 5G signal for being delivered to frequency mixer 2 using local oscillation signal
Frequency conversion is 3GHz, and the signal after frequency conversion is all transmitted to cable, and there are bypass frequency variation signal 2845MHz, 3GHz and main roads in cable
The signal that tetra- frequencies of initial signal 2345MHz, 3.5GHz are not interfered mutually.
As shown in figure 4, four signals are transferred to antenna side, main road initial signal 2345MHz, 3.5GHz is delivered to by cable
By aerial radiation to space after antenna side；Bypass frequency variation signal 2845MHz, 3GHz is transported to frequency mixer 2 by filter 4, mixes
Frequency device 2 carries out frequency conversion, bypass frequency variation signal using local oscillation signal 500MHz centering bypass frequency variation signal 2845MHz and 3GHz respectively
Bypass final signal 2345MHz and 3.5GHz identical with original bypass original frequency is returned in 2845MHz and 3GHz difference frequency conversion,
The bypass final signal that frequency is 2345MHz and 3.5GHz also passes through aerial radiation to space, reaches MIMO mode covering.
Such list cable MIMO signal transmitting device, can transmit with frequency double fluid in single line cable, believe 4G, 5G of main road
Number and 4G, 5G signal of bypass transmit MIMO signal in conventional wire cable simultaneously, enhance downloading rate, improve user and perceive effect
Fruit, solve the Utilizing question of old coaxial network for no reason at all, while reducing equipment power dissipation, reducing cost etc..
Specific case used herein elaborates inventive concept, the explanation of above example is only intended to
Help understands the core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from the inventive concept, any obvious modification, equivalent replacement or the other improvements made should be included in this
Within the protection scope of utility model.
Claims (5)
1. single cable MIMO signal transmitting device, which is characterized in that it is arranged on the cable between signal transmitting terminal and antenna, including
Sequentially connected combiner, frequency mixer and filter, the filter are connected with cable, the input terminal connection of the frequency mixer
There is a local oscillator chip.
2. list cable MIMO signal transmitting device according to claim 1, which is characterized in that signal transmitting terminal and antenna it
Between cable be equipped with two groups described in list cable MIMO signal transmitting device.
3. list cable MIMO signal transmitting device according to claim 2, which is characterized in that the letter of list cable MIMO described in first group
The setting of number transmitting device emits end side in the signal, and the output end of the signal transmitting terminal connects the input of the combiner
End, the output end of the combiner connect the input terminal of the frequency mixer, and the output end of the frequency mixer connects the filter
Input terminal, the output end connection cables of the filter.
4. list cable MIMO signal transmitting device according to claim 2, which is characterized in that the letter of list cable MIMO described in second group
Number transmitting device is arranged in the antenna side, and cable connects the input terminal of the filter, the output end connection of the filter
The input terminal of the frequency mixer, the output end of the frequency mixer connect the input terminal of the combiner, the output of the combiner
End connects the antenna.
5. list cable MIMO signal transmitting device according to claim 1, which is characterized in that the signal transmitting terminal exports 4G
Signal and/or 5G signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141896.1U CN208939956U (en) | 2018-12-19 | 2018-12-19 | Single cable MIMO signal transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822141896.1U CN208939956U (en) | 2018-12-19 | 2018-12-19 | Single cable MIMO signal transmitting device |
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| Publication Number | Publication Date |
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| CN208939956U true CN208939956U (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822141896.1U Active CN208939956U (en) | 2018-12-19 | 2018-12-19 | Single cable MIMO signal transmitting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450502A (en) * | 2018-12-19 | 2019-03-08 | 北京唯得科技有限公司 | Single cable MIMO signal transmitting device and transmission method |
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2018
- 2018-12-19 CN CN201822141896.1U patent/CN208939956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450502A (en) * | 2018-12-19 | 2019-03-08 | 北京唯得科技有限公司 | Single cable MIMO signal transmitting device and transmission method |
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| GR01 | Patent grant | ||
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Effective date of registration: 20200826 Address after: 102600 207, 2 / F, building 1, yard 3, Xinghua Street (Section 2), Daxing District, Beijing Patentee after: Beijing Boda chuangji Network Technology Development Co.,Ltd. Address before: Room 702-1, 7th floor, No. 3 Building, 22 Ronghua Middle Road, Daxing Economic and Technological Development Zone, Beijing, 100176 Patentee before: BEIJING WIDE TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220803 Address after: 100176 room 702-1, 7th floor, building 3, yard 22, Ronghua Middle Road, economic and Technological Development Zone, Daxing District, Beijing Patentee after: BEIJING WIDE TECHNOLOGY CO.,LTD. Address before: Room 207, 2nd Floor, Building 1, Yard 3, Xinghua Street (Second Section), Daxing District, Beijing 102600 Patentee before: Beijing Boda chuangji Network Technology Development Co.,Ltd. |