CN208401852U - A kind of LoRaWan or more isofrequency full-duplex module - Google Patents
A kind of LoRaWan or more isofrequency full-duplex module Download PDFInfo
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- CN208401852U CN208401852U CN201821174599.0U CN201821174599U CN208401852U CN 208401852 U CN208401852 U CN 208401852U CN 201821174599 U CN201821174599 U CN 201821174599U CN 208401852 U CN208401852 U CN 208401852U
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- lorawan
- duplexer
- radio
- frequency front
- frequency
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Abstract
The utility model discloses a kind of LoRaWan or more isofrequency full-duplex modules, the main system is connected by spi bus with the input terminal of LoRaWAN controller, the output end of the LoRaWAN controller is connected by SPI with the output of LoRaWAN radio-frequency front-end, the LoRaWAN radio-frequency front-end output is connected with the receiving port of duplexer, receiving channel is provided between the duplexer and LoRaWAN radio-frequency front-end output, the emission port of the duplexer is connected with the input of LoRaWAN radio-frequency front-end, transmission channel is provided between the transmitting terminal of the duplexer and LoRaWAN radio-frequency front-end input.The utility model has the advantages that passing through the isofrequency full-duplex duplexer up and down of setting, guarantee under tranmitting frequency, other frequencies are not inserted into loss, and the significant interval of two frequencies of duplexer is 10MHz, it can be realized preferable frequency boundary, uplink and downlink split by two different frequency ranges come transmitting-receiving does not disturb mutually, the interference between uplink and downlink radio channel is efficiently solved, ensure that the reliability of two-way isofrequency full-duplex transmitting-receiving communication.
Description
Technical field
The utility model relates to internet of things field more particularly to a kind of LoRaWan or more isofrequency full-duplex modules.
Background technique
Since LoRaWAN agreement uses the unauthorized frequency range of Sub1G, and according to the specification of unauthorized frequency range, in China, according to
The setting of international LoRaWAN alliance contains 96 data feedback channels using the frequency range of 470-510MHz in this frequency range, use frequency
Section is 470-490MHz, 48 down going channels, frequency range 500-510MHz, in order to guarantee the full duplex operation of uplink and downlink, it is desirable that
Uplink and downlink is transmitted using alien frequencies, i.e., 8 channels in 470-490 frequency range can only be used for receiving the news that child node transmits
Breath, and 1 channel in 500-510 frequency range can only be used to be used to send message to child node, other any frequency ranges cannot all go out
What incumbent spuious phenomenon.
Traditional LORAWAN mode, be it is semiduplex, without duplexer or transmission or receiving, transceiver insulation is difficult
It does, will have a direct impact on the system performance of equipment, can not work and influence the wireless communication of user under serious situation completely.
Utility model content
For the problems in the relevant technologies, the utility model proposes a kind of LoRaWan or more isofrequency full-duplex module, with gram
Take above-mentioned technical problem present in existing the relevant technologies.
The technical solution of the utility model is achieved in that
A kind of LoRaWan or more isofrequency full-duplex module, including main system, the main system by spi bus with
The input terminal of LoRaWAN controller is connected, and the output end of the LoRaWAN controller passes through SPI and LoRaWAN radio-frequency front-end
Output is connected, and LoRaWAN radio-frequency front-end output is connected with the receiving port of duplexer, the duplexer with it is described
It is provided with receiving channel between the output of LoRaWAN radio-frequency front-end, the emission port and LoRaWAN radio-frequency front-end of the duplexer are defeated
Enter to be connected, is provided with transmission channel between the transmitting terminal of the duplexer and LoRaWAN radio-frequency front-end input, and described
It is provided with upstream filter on transmission channel, downstream filter, the upstream filter and institute are provided in the receiving channel
It states and is connected between downstream filter and the duplexer by PCB printed circuit board, the LoRaWAN radio-frequency front-end output
Signal filters to the duplexer through the downstream filter and emits signal by LoRaWAN high-gain aerial, and described
LoRaWAN high-gain aerial receive signal by the duplexer be transmitted to the upstream filter and with before LoRaWAN radio frequency
End input is connected, and the LoRaWAN radio-frequency front-end input is connected with the input terminal of the LoRaWAN controller.
Further, absorption resonant cavity is provided between the transmission channel and the receiving channel.
Further, the weld part of the duplexer pin is provided on the PCB printed circuit board.
The beneficial effects of the utility model are: the utility model devises about one isofrequency full-duplex duplexer, guarantee
470-490 receives in frequency range again, other frequencies are not inserted into loss, guarantees under the tranmitting frequency of 500-510, other
Frequency is not inserted into loss, and the significant interval of two frequencies of duplexer is 10MHz, can be realized preferable frequency boundary, will
Uplink and downlink is split by two different frequency ranges come transmitting-receiving does not disturb mutually, efficiently solves between uplink and downlink radio channel
Interference, and Out-of-band rejection is carried out outside to 470-490,500-510M frequency range, and ensure out of 30K-17GHz routine radio band
Do not have spuious, ensure that the reliability of two-way isofrequency full-duplex transmitting-receiving communication.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of LoRaWan or more isofrequency full-duplex module；
Fig. 2 is a kind of structural block diagram of duplexer in LoRaWan or more isofrequency full-duplex module；
Fig. 3 is a kind of structural schematic diagram of PCB printing plate in LoRaWan or more isofrequency full-duplex module.
In figure:
1, main system；2, LoRaWAN controller；3, LoRaWAN radio-frequency front-end inputs；4, transmission channel；5, LoRaWAN high
Gain antenna；6, duplexer；7, receiving channel；8, LoRaWAN radio-frequency front-end exports；9, downstream filter；10, uplink filters
Device；11, PCB printed circuit board；12, weld part.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Embodiment according to the present utility model provides a kind of LoRaWan or more isofrequency full-duplex module.
Referring to Fig.1-3, according to LoRaWan or more the isofrequency full-duplex module of the utility model embodiment, including main system
1, the main system 1 is connected by spi bus with the input terminal of LoRaWAN controller 2, the LoRaWAN controller 2 it is defeated
Outlet is connected by SPI with LoRaWAN radio-frequency front-end output 8, and the LoRaWAN radio-frequency front-end output 8 connects with duplexer 6
Receiving end mouth is connected, and receiving channel 7 is provided between the duplexer 6 and LoRaWAN radio-frequency front-end output 8, described double
The emission port of work device 6 is connected with LoRaWAN radio-frequency front-end input 3, the transmitting terminal and the LoRaWAN of the duplexer 6
It is provided with transmission channel 4 between radio-frequency front-end input 3, and is provided with upstream filter 10 on the transmission channel 4, the reception
It is provided with downstream filter 9 on channel 7, leads between the upstream filter 10 and the downstream filter 9 and the duplexer 6
It crosses PCB printed circuit board 11 to be connected, the signal of the LoRaWAN radio-frequency front-end output 8 is arrived through the downstream filter 9 filtering
The duplexer 6 simultaneously emits signal by LoRaWAN high-gain aerial 5, and the LoRaWAN high-gain aerial 5 receives signal
The upstream filter 10 is transmitted to by the duplexer 6 and is connected with LoRaWAN radio-frequency front-end input 3, it is described
LoRaWAN radio-frequency front-end input 3 is connected with the input terminal of the LoRaWAN controller 2.
In one embodiment, absorption resonant cavity is provided between the transmission channel 4 and the receiving channel 7.
In one embodiment, the weld part 12 of 6 pin of duplexer is provided on the PCB printed circuit board 11.
In conclusion by means of the above-mentioned technical proposal of the utility model, including main system 1, the main system 1 pass through
Spi bus is connected with the input terminal of LoRaWAN controller 2, the output end of the LoRaWAN controller 2 by SPI with
LoRaWAN radio-frequency front-end output 8 is connected, and the LoRaWAN radio-frequency front-end output 8 is connected with the receiving port of duplexer 6,
Receiving channel 7, the transmitting terminal of the duplexer 6 are provided between the duplexer 6 and LoRaWAN radio-frequency front-end output 8
Mouth is connected with LoRaWAN radio-frequency front-end input 3, the transmitting terminal of the duplexer 6 and LoRaWAN radio-frequency front-end input 3
Between be provided with transmission channel 4, and be provided with upstream filter 10 on the transmission channel 4, be provided in the receiving channel 7
Downstream filter 9 passes through PCB printed circuit between the upstream filter 10 and the downstream filter 9 and the duplexer 6
Plate 11 is connected, and the signal of the LoRaWAN radio-frequency front-end output 8 arrives the duplexer 6 simultaneously through the downstream filter 9 filtering
Emit signal by LoRaWAN high-gain aerial 5, and the LoRaWAN high-gain aerial 5 receives signal and passes through the duplexer
6 are transmitted to the upstream filter 10 and are connected with LoRaWAN radio-frequency front-end input 3, the LoRaWAN radio-frequency front-end input
3 are connected with the input terminal of the LoRaWAN controller 2.
The utility model has the beneficial effects that the utility model devises about one isofrequency full-duplex duplexer, guarantee again
470-490's receives in frequency range, other frequencies are not inserted into loss, guarantees under the tranmitting frequency of 500-510, other frequencies
Rate is not inserted into loss, and the significant interval of two frequencies of duplexer is 10MHz, can be realized preferable frequency boundary, will be upper
Downlink is split by two different frequency ranges come transmitting-receiving does not disturb mutually, efficiently solves doing between uplink and downlink radio channel
It disturbs, and Out-of-band rejection is carried out outside to 470-490,500-510M frequency range, and ensure and do not have out of 30K-17GHz routine radio band
Have spuious, ensure that the reliability of two-way isofrequency full-duplex transmitting-receiving communication.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (3)
1. a kind of LoRaWan or more isofrequency full-duplex module, which is characterized in that including main system (1), the main system (1) is logical
It crosses spi bus to be connected with the input terminal of LoRaWAN controller (2), the output end of the LoRaWAN controller (2) passes through SPI
It is connected with LoRaWAN radio-frequency front-end output (8), the receiving end of the LoRaWAN radio-frequency front-end output (8) and duplexer (6)
Mouth is connected, and is provided with receiving channel (7) between the duplexer (6) and LoRaWAN radio-frequency front-end output (8), described
The emission port of duplexer (6) and LoRaWAN radio-frequency front-end input (3) are connected, the transmitting terminal of the duplexer (6) with it is described
It is provided with transmission channel (4) between LoRaWAN radio-frequency front-end input (3), and is provided with uplink filtering on the transmission channel (4)
Device (10) is provided with downstream filter (9) on the receiving channel (7), the upstream filter (10) and the downstream filtering
It is connected between device (9) and the duplexer (6) by PCB printed circuit board (11), the LoRaWAN radio-frequency front-end output
(8) signal emits through the downstream filter (9) filtering to the duplexer (6) and by LoRaWAN high-gain aerial (5)
Signal, and the LoRaWAN high-gain aerial (5) receives signal and is transmitted to the upstream filter by the duplexer (6)
(10) and with LoRaWAN radio-frequency front-end input (3) it is connected, the LoRaWAN radio-frequency front-end input (3) and the LoRaWAN
The input terminal of controller (2) is connected.
2. a kind of LoRaWan or more isofrequency full-duplex module according to claim 1, which is characterized in that the transmitting is logical
Absorption resonant cavity is provided between road (4) and the receiving channel (7).
3. a kind of LoRaWan or more isofrequency full-duplex module according to claim 1, which is characterized in that the PCB printing
The weld part (12) of the duplexer (6) pin is provided on circuit board (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821174599.0U CN208401852U (en) | 2018-07-24 | 2018-07-24 | A kind of LoRaWan or more isofrequency full-duplex module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821174599.0U CN208401852U (en) | 2018-07-24 | 2018-07-24 | A kind of LoRaWan or more isofrequency full-duplex module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208401852U true CN208401852U (en) | 2019-01-18 |
Family
ID=65128625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821174599.0U Expired - Fee Related CN208401852U (en) | 2018-07-24 | 2018-07-24 | A kind of LoRaWan or more isofrequency full-duplex module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208401852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112367148A (en) * | 2020-10-22 | 2021-02-12 | 华南农业大学 | Large-area hillside orchard LoRa wireless transmission frame loss detection method and device |
-
2018
- 2018-07-24 CN CN201821174599.0U patent/CN208401852U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112367148A (en) * | 2020-10-22 | 2021-02-12 | 华南农业大学 | Large-area hillside orchard LoRa wireless transmission frame loss detection method and device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 Termination date: 20210724 |