CN113922841A - Lora communication module of wide voltage work - Google Patents
Lora communication module of wide voltage work Download PDFInfo
- Publication number
- CN113922841A CN113922841A CN202111376553.3A CN202111376553A CN113922841A CN 113922841 A CN113922841 A CN 113922841A CN 202111376553 A CN202111376553 A CN 202111376553A CN 113922841 A CN113922841 A CN 113922841A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- lora
- communication module
- module
- lora communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 238000004891 communication Methods 0.000 title claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000005059 dormancy Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 2
- 230000008054 signal transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y30/00—IoT infrastructure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Power Engineering (AREA)
- Transceivers (AREA)
Abstract
The utility model provides a wide voltage work's Lora communication module, including Lora radio frequency transceiver module, Lora radio frequency transceiver module is the control center of whole Lora communication module, and signal control and data processing function concurrently, Lora radio frequency transceiver module is used for sending control command to the radio frequency signal's of Lora communication module receipt and transmission channel realization switch, Lora radio frequency transceiver module is connected with power boost circuit, Lora radio frequency transceiver module is connected with radio frequency and receives matching network and radio frequency transmission matching network. According to the invention, the working voltage range of the Lora communication module is widened by adding the power supply booster circuit, the energy of a battery or a capacitor for supplying power can be fully utilized, the utilization efficiency of the battery or the capacitor is improved, and the hardware cost of the Lora communication system is reduced by reducing the working voltage of the Lora communication module, and meanwhile, the space of an application product is saved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a wide-voltage working Lora communication module.
Background
Lora (Long Range radio) is a low-power consumption local area network wireless standard, is long-distance radio, and the distance that propagates is farther than other wireless mode under the same power consumption condition, has realized low-power consumption and long-Range unity, and Lora communication protocol signal is through the transmission of Lora communication module and receiving, realizes the building of thing networking.
For the application of most of the internet of things, the requirements on the volume and the cost of a circuit module of the internet of things are high, the requirements are low in cost and small in size, but the existing Lora communication module mostly adopts a power supply with a large volume, the working voltage range of the existing power supply is narrow, the electric energy capacity of a battery cannot be fully utilized, and the use cost of the whole Lora module is also increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a Lora communication module which reduces the volume of a power supply battery or a capacitor by reducing the lowest working voltage so as to reduce the hardware cost.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a Lora communication module of wide voltage work includes:
the Lora radio frequency transceiving module is used for sending a control instruction to realize switching of a receiving channel and a transmitting channel of a radio frequency signal of the Lora communication module;
the power supply booster circuit is used for reducing the lowest working voltage of the Lora communication module, and the lowest working voltage of the Lora communication module is reduced to 0.7V from the existing 1.8V by adding the power supply booster circuit to the traditional Lora communication module, so that the working voltage range of the Lora communication module is widened;
the low radio frequency transceiver module connects the power boost circuit, the low radio frequency transceiver module is connected with the antenna, and the low radio frequency transceiver module receives or transmits low radio frequency signals through the antenna, and the low radio frequency transceiver module processes the radio frequency signals.
Preferably, the power supply boosting circuit comprises a control chip U3, a SW pin and a 6 pin of the control chip U3 are connected in parallel to serve as a VIN interface, a 5 pin of the control chip U3 serves as a VOUT interface, the EN pin is a control pin and is connected with the Lora radio frequency transceiver module, the 4 pin of the control chip U3 is a feedback input of output voltage, after the voltage is divided by the resistors R1 and R2, the voltage is introduced into a voltage feedback end 4 pin of the control chip U3 to form a feedback circuit, the voltage is kept constant at a set voltage value, so that the input voltage can be stably output from 0.7V to VOUT, this voltage enables the Lora rf transceiver module to operate stably and continuously, and by pulling the level of the EN pin low, can make power boost circuit's control chip U3 get into the dormant state, cut off power boost circuit's power, fall to the consumption almost zero to the power consumption of greatly reduced Lora communication module when dormancy.
Preferably, be equipped with the radio frequency between Lora radio frequency transceiver module and the antenna and receive the matching network, the radio frequency receives the matching network and is used for right the radio frequency signal that Lora radio frequency transceiver module received carries out the network matching, realizes that the network matching can make the signal transmission of circuit reach the transmission coefficient of the biggest, if mismatch, then can lose power, still can cause the coupling, produces unnecessary spurious signal, receives the matching network through addding the radio frequency and can make whole radio frequency signal reach the biggest transmission rate in receiving and transmitting process, and the signal quality of transmission is preferred.
Preferably, be equipped with radio frequency transmission matching network between Lora radio frequency transceiver module and the antenna, radio frequency transmission matching network is used for right the radio frequency signal that Lora radio frequency transceiver module transmitted carries out the network matching, realizes that the network matching can make the signal transmission of circuit reach the transmission coefficient of the biggest, if mismatch, then can lose power, still can cause the coupling, produces unnecessary spurious signal, can make whole radio frequency signal reach the biggest transmission rate in receiving and transmitting process through addding radio frequency transmission matching network, and the signal quality of transmission is preferred.
Preferably, the Lora rf transceiver module is connected to a crystal oscillator circuit, and the crystal oscillator circuit is configured to enable the Lora rf transceiver module to generate an rf signal with a stable frequency.
Preferably, the power supply boosting circuit is connected with a power supply circuit, and the power supply circuit is used for supplying power to the Lora communication module.
Preferably, the Lora rf transceiver module includes a control chip U1, the DCC pin of the control chip U1 is connected to the power boost circuit through an inductor L7, and the 22 pin of the control chip U1 is connected to an antenna through a capacitor C11.
Preferably, the model of the control chip U1 is LLCC 68.
Preferably, the Lora radio frequency transceiver module controls the turn-off of the power supply booster circuit, when the Lora communication module enters a dormant state, the power supply of the VREG pin of the Lora radio frequency transceiver module is automatically disconnected, and the output voltage is zero.
The invention has the advantages and positive effects that:
1. according to the invention, the power supply booster circuit is added to the traditional Lora communication module, so that the lowest working voltage of the Lora communication module is reduced to 0.7V from the existing 1.8V, the working voltage range of the Lora communication module is widened, the energy of a battery or a capacitor for supplying power can be fully utilized by reducing the working voltage, and the utilization efficiency of the battery or the capacitor is improved.
2. According to the invention, the working voltage of the Lora communication module is reduced, and the capacity of a battery or a capacitor can be reduced, so that the hardware cost of the Lora communication system is reduced, the space of an application product is saved, and the volume of the application product is reduced.
Drawings
FIG. 1 is a block diagram of the module connection of the present invention;
FIG. 2 is a schematic circuit diagram of the Lora RF transceiver module of the present invention;
fig. 3 is a circuit schematic of the power supply boost circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the wide voltage operated Lora communication module according to the present invention includes an Lora rf transceiver module, which is a control center of the whole Lora communication module and combines signal control and data processing functions, the Lora rf transceiver module is used to send a control command to switch on and off the receiving and transmitting channels of the Lora communication module, the Lora rf transceiver module is connected with a power boost circuit, which is used to reduce the minimum working voltage of the Lora communication module, the minimum working voltage of the Lora communication module is reduced from the existing 1.8V to 0.7V by adding the power boost circuit to the conventional Lora communication module, the working voltage range of the Lora communication module is widened, the Lora rf transceiver module is connected with an rf receiving matching network and an rf transmitting matching network, the rf receiving matching network is used to perform network matching on the radio frequency signals received by the Lora rf transceiver module, the radio frequency transmitting and matching network is used for carrying out network matching on radio frequency signals transmitted by the Lora radio frequency transmitting and receiving module, network matching is achieved, the signal transmission of a circuit can reach the maximum transmission coefficient, if the radio frequency signals are not matched, power can be lost, coupling can be caused, unnecessary stray signals are generated, the whole radio frequency signals can reach the maximum transmission rate in the receiving and transmitting processes by additionally arranging the radio frequency receiving and matching network and the radio frequency transmitting and matching network, the quality of transmitted signals is good, the radio frequency receiving and matching network and the radio frequency transmitting and matching network are connected with an antenna, the Lora radio frequency transmitting and receiving module receives or transmits Lora radio frequency signals through the antenna, the radio frequency receiving and matching network and the radio frequency transmitting and matching network transmit the Lora radio frequency signals received by the antenna to the Lora radio frequency transmitting and receiving module, and the Lora radio frequency transmitting and receiving module carries out radio frequency signal processing.
In addition, the Lora radio frequency transceiver module still is connected with crystal oscillator circuit, power boost circuit is connected with power supply circuit, crystal oscillator circuit is used for making Lora radio frequency transceiver module produce the radio frequency signal of frequency stabilization, power supply circuit is used for supplying power for Lora communication module, Lora radio frequency transceiver module controls turn-off of power supply circuit, when Lora communication module gets into the dormant state, the power automatic disconnection of the VREG pin of Lora radio frequency transceiver module, output voltage is zero, make the consumption of Lora communication module under the dormant state reduce to zero, avoid when the dormant state, the power supply condition under the Lora communication module still maintains operating condition, cause unnecessary cost loss.
As shown in fig. 2, which is a schematic diagram of a circuit principle of a Lora radio frequency transceiver module, the Lora radio frequency transceiver module includes a control chip U1, the control chip U1 is of a model number LLCC68, a DCC pin of the control chip U1 is connected to a power supply circuit through an inductor L7, a 22 pin of the control chip U1 is connected to an antenna through a capacitor C11, and in fig. 2, a radio frequency receiving matching network and a radio frequency transmitting matching network are formed by peripheral circuits of the Lora radio frequency transceiver module and serve as a signal transmission network in front of the Lora radio frequency transceiver module and the antenna.
As shown in fig. 3, which is a schematic circuit diagram of a power boost circuit, the power boost circuit includes a control chip U3, a SW pin and a 6 pin of the control chip U3 are connected in parallel to serve as a VIN interface, a 5 pin of the control chip U3 serves as a VOUT interface, a 4 pin of the control chip U3 serves as a feedback input of an output voltage to ensure a stable output operating voltage, and an EN pin thereof serves as a control pin and is connected to a Lora rf transceiver module, as can be seen from fig. 3, after voltage division is performed by resistors R1 and R2, the voltage is introduced to the 4 pin of the control chip U3 to form a feedback circuit, the voltage is kept constant at a set voltage value, so that the input voltage can stably output a VOUT voltage from 0.7V to VOUT, the Lora rf transceiver module can stably and continuously operate, and by pulling down a level of the EN pin, the control chip U3 of the power boost circuit can enter a sleep state, the power of the power supply booster circuit is cut off, and the power consumption is reduced to almost zero, so that the power consumption of the Lora communication module in the dormant state is greatly reduced.
The first embodiment is as follows:
the Lora communication module comprises Lora radio frequency transceiver module, power boost circuit and antenna, and the electric energy is provided by ordinary power, handles radio frequency signal through Lora radio frequency transceiver module, is directly gone out or is received into with radio frequency signal transmission by the antenna again, expands wide by power boost circuit to power supply's voltage range, comes the volume of this compression power, reduce cost.
Example two:
on the basis of the first embodiment, a radio frequency receiving matching network and a radio frequency transmitting matching network are added to improve the transmission rate of radio frequency signals, the functions are unchanged, and the receiving and transmitting of the radio frequency signals are realized.
Example three:
on the basis of the second embodiment, a crystal oscillator circuit is added, the power supply end of the Lora communication module is changed into a power supply circuit, the control end of the power supply circuit is connected to the power supply boosting circuit, the Lora radio frequency transceiver module controls the power supply circuit to be turned off, when the Lora communication module is in a dormant state, the VREG pin of the Lora radio frequency transceiver module is powered off, the power supply state of the power supply circuit is also adjusted to be in the dormant state, power consumption is reduced, the dormant state, namely a non-working state, is an application state of the communication module well known by a person skilled in the art, and details are not repeated herein.
When the system is implemented specifically, the power circuit supplies power to the Lora communication module, the power circuit is controlled through the power boosting circuit, and the Lora radio frequency receiving and transmitting module receives or transmits radio frequency signals to the antenna through the radio frequency receiving matching network and the radio frequency transmitting matching network.
According to the invention, the power supply booster circuit is added to the traditional Lora communication module, so that the lowest working voltage of the Lora communication module is reduced to 0.7V from the existing 1.8V, the working voltage range of the Lora communication module is widened, the energy of a battery or a capacitor for supplying power can be fully utilized by reducing the working voltage, the utilization efficiency of the battery or the capacitor is improved, and the capacity of the battery or the capacitor can be reduced by reducing the working voltage of the Lora communication module, so that the hardware cost of the Lora communication system is reduced, the space of an application product is saved, and the volume of the application product is reduced.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.
Claims (9)
1. The utility model provides a Lora communication module of wide voltage work which characterized in that: the method comprises the following steps:
the Lora radio frequency transceiving module is used for sending a control instruction to switch on and off the receiving and transmitting channels of the radio frequency signals of the Lora communication module;
the power supply booster circuit is used for reducing the lowest working voltage of the Lora communication module;
the low radio frequency transceiver module connects the power boost circuit, the low radio frequency transceiver module is connected with the antenna, and the low radio frequency transceiver module receives or transmits low radio frequency signals through the antenna, and the low radio frequency transceiver module processes the radio frequency signals.
2. The wide voltage Lora communication module of claim 1, wherein: the power supply boosting circuit comprises a control chip U3, a SW pin and a 6 pin of a control chip U3 are connected in parallel to serve as a VIN interface, a 5 pin of the control chip U3 serves as a VOUT interface, a 4 pin of the control chip U3 is used as feedback input of output voltage to ensure stability of output working voltage, and an EN pin of the control chip U3 is used as a control pin and connected to the Lora radio frequency transceiving module.
3. The wide voltage Lora communication module of claim 1, wherein: and a radio frequency receiving matching network is arranged between the Lora radio frequency transceiving module and the antenna and is used for carrying out network matching on the radio frequency signals received by the Lora radio frequency transceiving module.
4. The wide voltage Lora communication module of claim 1, wherein: and a radio frequency transmission matching network is arranged between the Lora radio frequency transceiver module and the antenna and is used for carrying out network matching on the radio frequency signals transmitted by the Lora radio frequency transceiver module.
5. The wide voltage Lora communication module of claim 1, wherein: the Lora radio frequency transceiving module is connected with a crystal oscillation circuit, and the crystal oscillation circuit is used for enabling the Lora radio frequency transceiving module to generate radio frequency signals with stable frequency.
6. The wide voltage Lora communication module of claim 1, wherein: the power supply booster circuit is connected with a power supply circuit, and the power supply circuit is used for supplying power to the Lora communication module.
7. The wide voltage Lora communication module of claim 1, wherein: the Lora radio frequency transceiver module comprises a control chip U1, a DCC pin of the control chip U1 is connected with the power supply boosting circuit through an inductor L7, and a 22 pin of the control chip U1 is connected with an antenna through a capacitor C11.
8. The wide voltage Lora communication module of claim 7, wherein: the model of the control chip U1 is LLCC 68.
9. The wide voltage Lora communication module of claim 1, wherein: the shutdown of power boost circuit is controlled to the Lora radio frequency transceiver module, and when the Lora communication module got into dormancy state, the power of the VREG pin of Lora radio frequency transceiver module was automatic to be cut off, and output voltage was zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376553.3A CN113922841A (en) | 2021-11-19 | 2021-11-19 | Lora communication module of wide voltage work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376553.3A CN113922841A (en) | 2021-11-19 | 2021-11-19 | Lora communication module of wide voltage work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113922841A true CN113922841A (en) | 2022-01-11 |
Family
ID=79247617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111376553.3A Pending CN113922841A (en) | 2021-11-19 | 2021-11-19 | Lora communication module of wide voltage work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113922841A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202856409U (en) * | 2012-10-10 | 2013-04-03 | 惠州市米琦通信设备有限公司 | Mobile phone boost charging wire and mobile phone charging system |
| CN207134838U (en) * | 2017-09-15 | 2018-03-23 | 深圳市泰比特科技有限公司 | A kind of voltage booster circuit for battery based on LoRa terminals |
| CN207380887U (en) * | 2017-08-26 | 2018-05-18 | 中软电科智能技术有限公司 | A kind of LORA wireless communication modules |
| CN208015773U (en) * | 2018-04-17 | 2018-10-26 | 珠海巨晟科技股份有限公司 | A kind of Internet of Things communication module based on the LoRa communication technologys |
| CN216290903U (en) * | 2021-11-19 | 2022-04-12 | 杭州朗亦通科技有限公司 | Lora communication module of wide voltage work |
-
2021
- 2021-11-19 CN CN202111376553.3A patent/CN113922841A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202856409U (en) * | 2012-10-10 | 2013-04-03 | 惠州市米琦通信设备有限公司 | Mobile phone boost charging wire and mobile phone charging system |
| CN207380887U (en) * | 2017-08-26 | 2018-05-18 | 中软电科智能技术有限公司 | A kind of LORA wireless communication modules |
| CN207134838U (en) * | 2017-09-15 | 2018-03-23 | 深圳市泰比特科技有限公司 | A kind of voltage booster circuit for battery based on LoRa terminals |
| CN208015773U (en) * | 2018-04-17 | 2018-10-26 | 珠海巨晟科技股份有限公司 | A kind of Internet of Things communication module based on the LoRa communication technologys |
| CN216290903U (en) * | 2021-11-19 | 2022-04-12 | 杭州朗亦通科技有限公司 | Lora communication module of wide voltage work |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100461677C (en) | Radio frequency head end device for wireless sensor network node application | |
| CN216290903U (en) | Lora communication module of wide voltage work | |
| CN206353863U (en) | NB IoT radio communication devices | |
| CN101645715B (en) | Terminal power saving method and terminal | |
| CN109150224A (en) | Wireless signal transceiver and its energy-saving control method | |
| CN216290902U (en) | Full-automatic receiving and dispatching switching Lora communication module | |
| CN113922841A (en) | Lora communication module of wide voltage work | |
| CN103117707B (en) | Lower power consumption high gain upper mixer | |
| CN211530859U (en) | Wireless charging transmitting terminal, wireless charging receiving terminal and wireless charging system | |
| CN212305326U (en) | Highly integrated NB-IoT wireless communication module | |
| CN212381209U (en) | 4T4 RWIFII module based on MIMO technique | |
| CN212137678U (en) | Satellite ground communication circuit based on AD9364 radio frequency chip | |
| EP1301998B1 (en) | Personal computer card radio modem using non-standard power output level | |
| CN220108214U (en) | Dual-mode communication module and intelligent gas meter | |
| CN114722987A (en) | Method and chip for realizing passive AIoT node | |
| CN111147109B (en) | Wireless energy-carrying communication system with scattering communication and voltage monitoring functions | |
| CN208174680U (en) | A kind of interconnection plane NB-IOT module | |
| CN220107980U (en) | Dual-mode communication module and Internet of things gas meter | |
| CN113904702A (en) | Full-automatic receiving and dispatching switching Lora communication module | |
| CN213754498U (en) | Wireless transceiver supporting Wi-SUN protocol | |
| CN211378020U (en) | Low-power consumption wireless transceiver circuit module | |
| CN216134468U (en) | Dual-mode LoRa communication module and communication terminal | |
| CN213342194U (en) | Low-power-consumption radio frequency decoding system | |
| CN217508789U (en) | 470-480MHz gateway module based on LoRa baseband chip | |
| CN202551020U (en) | Modularization digital radio station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |