CN215498958U - LORA wireless communication module and wireless communication device - Google Patents
LORA wireless communication module and wireless communication device Download PDFInfo
- Publication number
- CN215498958U CN215498958U CN202121203719.7U CN202121203719U CN215498958U CN 215498958 U CN215498958 U CN 215498958U CN 202121203719 U CN202121203719 U CN 202121203719U CN 215498958 U CN215498958 U CN 215498958U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- module
- communication module
- wireless communication
- lora
- 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.)
- Active
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The utility model relates to the technical field of wireless communication, and provides an LORA wireless communication module and a wireless communication device, wherein the module comprises: the LORA communication module, the amplification module and the single-pole double-throw switch module; the serial port end of the LORA communication module is used for being connected with an external main control device, the radio frequency transmitting end is connected with the first end of the amplifying module, the radio frequency receiving end is connected with the second movable end of the single-pole double-throw switch module, and the working state end is connected with the control end of the single-pole double-throw switch module; the first movable end of the single-pole double-throw switch module is connected with the second end of the amplification module, and the fixed end of the single-pole double-throw switch module is used for being connected with an antenna; the utility model adds the amplifying module, realizes the switching of transmitting and receiving through the single-pole double-throw switch module, effectively improves the transmitting power of the LORA wireless communication module and can meet the requirement of high-power application.
Description
Technical Field
The utility model belongs to the technical field of wireless communication, and particularly relates to an LORA wireless communication module and a wireless communication device.
Background
The LORA is a long-distance wireless communication technology, self-networking is realized through interconnection of different module nodes, and the LORA is more and more widely applied to wireless meter reading, security, agriculture, industry and the like by means of strong propagation capacity.
In the prior art, the output power of an integrated LORA communication IC is fixed, and the application requirement of high power cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of this, embodiments of the present invention provide an LORA wireless communication module and a wireless communication device to solve the problem that the integrated LORA communication IC in the prior art cannot meet the requirement of high power application.
A first aspect of an embodiment of the present invention provides an LORA wireless communication module, including: the LORA communication module, the amplification module and the single-pole double-throw switch module;
the LORA communication module is used for connecting a serial port end with an external main control device, a radio frequency transmitting end is connected with a first end of the amplifying module, a radio frequency receiving end is connected with a second movable end of the single-pole double-throw switch module, and a working state end is connected with a control end of the single-pole double-throw switch module;
the first movable end of the single-pole double-throw switch module is connected with the second end of the amplification module, and the stationary end of the single-pole double-throw switch module is used for being connected with an antenna;
when the LORA communication module is in a transmitting state, a channel between a first movable end and a fixed end of the single-pole double-throw switch module is conducted, and a modulation signal output by the LORA communication module is amplified by the amplifying module and then output;
when the LORA communication module is in a receiving state, a passage between the second movable end and the fixed end of the single-pole double-throw switch module is conducted, and the LORA communication module receives a signal to be demodulated.
Optionally, the LORA wireless communication module further includes: a matching module;
the first end of the matching module is connected with the fixed end of the single-pole double-throw switch module, and the second end of the matching module is used for being connected with an antenna;
the matching module is used for output impedance matching.
Optionally, the amplifying module includes: the power amplifier comprises a power amplifier tube, an input matching unit, an output matching unit, a first power supply unit and a second power supply unit;
the grid electrode of the power amplifier tube is respectively connected with the second end of the input matching unit and the output end of the first power supply unit, the drain electrode of the power amplifier tube is respectively connected with the first end of the output matching unit and the output end of the second power supply unit, and the source electrode of the power amplifier tube is grounded;
the first end of the input matching unit is connected with the first end of the amplifying module;
and the second end of the output matching unit is connected with the second end of the amplifying module.
Optionally, the input matching unit includes: the first capacitor, the second capacitor, the third capacitor and the first inductor;
the first end of the first inductor is connected with the first end of the first capacitor and the first end of the third capacitor respectively, and the second end of the first inductor is connected with the first end of the second capacitor and the second end of the input matching unit respectively;
the second end of the third capacitor is connected with the first end of the input matching unit;
the second end of the first capacitor and the second end of the second capacitor are both grounded.
Optionally, the output matching unit includes: a fourth capacitor, a fifth capacitor, a sixth capacitor and a second inductor;
a first end of the second inductor is connected with a first end of the fourth capacitor and a first end of the output matching unit respectively, and a second end of the second inductor is connected with a first end of the fifth capacitor;
the second end of the fifth capacitor is respectively connected with the first end of the sixth capacitor and the second end of the output matching unit;
the second end of the fourth capacitor and the second end of the sixth capacitor are both grounded.
Optionally, the first power supply unit includes: a first resistor and a seventh capacitor;
the first end of the first resistor is connected with the output end of the first power supply unit, the second end of the first resistor is connected with the first end of the seventh capacitor, and the second end of the first resistor is also used for being connected with a first power supply;
and the second end of the seventh capacitor is grounded.
Optionally, the second power supply unit includes: a third inductor and an eighth capacitor;
a first end of the third inductor is connected with the output end of the second power supply unit, a second end of the third inductor is connected with a first end of the eighth capacitor, and the second end of the third inductor is also used for being connected with a second power supply;
and the second end of the eighth capacitor is grounded.
Optionally, the power amplifier tube is an LDMOS tube.
Optionally, the serial port of the LORA communication module is an SPI communication interface.
A second aspect of the present invention provides a wireless communication apparatus, including any of the LORA wireless communication modules in the first aspect of the present invention.
The embodiment of the utility model provides a LORA wireless communication module, which comprises: the LORA communication module, the amplification module and the single-pole double-throw switch module; the LORA communication module is used for connecting a serial port end with an external main control device, a radio frequency transmitting end is connected with a first end of the amplifying module, a radio frequency receiving end is connected with a second movable end of the single-pole double-throw switch module, and a working state end is connected with a control end of the single-pole double-throw switch module; the first movable end of the single-pole double-throw switch module is connected with the second end of the amplification module, and the stationary end of the single-pole double-throw switch module is used for being connected with an antenna; when the LORA communication module is in a transmitting state, the modulation signal output by the LORA communication module is output after being amplified by the amplifying module, so that the transmitting power of the LORA wireless communication module is effectively improved, and the requirement of high-power application can be met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic circuit diagram of a LORA wireless communication module according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of another LORA wireless communication module according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an amplifying module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a LORA communication module according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a single pole double throw switch module according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the utility model. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, in an implementation of the present invention, there is provided a LORA wireless communication module, including: the LORA communication module 11, the amplification module 12 and the single-pole double-throw switch module 13;
a serial port end of the LORA communication module 11 is used for being connected with an external main control device, a radio frequency transmitting end is connected with a first end of the amplifying module 12, a radio frequency receiving end is connected with a second movable end of the single-pole double-throw switch module 13, and a working state end is connected with a control end of the single-pole double-throw switch module 13;
a single-pole double-throw switch module 13, a first movable end of which is connected with the second end of the amplification module 12, and a stationary end of which is used for connecting with an antenna;
when the LORA communication module 11 is in a transmitting state, a path between a first moving end and a fixed end of the single-pole double-throw switch module 13 is conducted, and a modulation signal output by the LORA communication module 11 is amplified by the amplification module 12 and then output;
when the LORA communication module 11 is in the receiving state, the path between the second moving end and the stationary end of the single-pole double-throw switch module 13 is conducted, and the LORA communication module 11 receives the signal to be demodulated.
In the embodiment of the present invention, the LORA communication module 11 has two operating states, i.e., transmitting and receiving states, and the single-pole double-throw switch module 13 switches to different paths according to the operating state signal output from the operating state terminal of the LORA communication module 11. When the LORA communication module 11 is in the transmitting state, the modulation signal output by the LORA communication module 11 is output after being amplified by the amplifying module 12, so that the transmitting power of the LORA wireless communication module is effectively improved, the high-power application requirement can be met, and the LORA communication distance is increased.
In some embodiments, referring to fig. 2, the LORA wireless communication module may further include: a matching module 14;
a matching module 14, a first end of which is connected with the immobile end of the single-pole double-throw switch module 13, and a second end of which is used for being connected with an antenna;
the matching module 14 is used for output impedance matching.
The embodiment of the present invention provides a matching module 14 for matching output impedance.
In some embodiments, referring to fig. 3, the amplification module 12 may include: a power amplifying transistor Q1, an input matching unit 121, an output matching unit 122, a first power supply unit 123, and a second power supply unit 124;
a power amplifier tube Q1, having a gate connected to the second end of the input matching unit 121 and the output end of the first power supply unit 123, a drain connected to the first end of the output matching unit 122 and the output end of the second power supply unit 124, and a source grounded;
a first end of the input matching unit 121 is connected to a first end of the amplification module 12;
a second terminal of the output matching unit 122 is connected to a second terminal of the amplification block 12.
The power amplifier tube Q1 is used to amplify a signal, the input matching unit 121 is used to input end impedance matching, the output matching unit 122 is used to output end impedance matching, the first power supply unit 123 is used to provide a voltage for the gate of the power amplifier tube Q1, and the second power supply unit 124 is used to provide a voltage for the drain of the power amplifier tube Q1. In the embodiment of the utility model, the power amplifying tube Q1 is adopted to amplify the wireless signal, the circuit structure is simple, the cost of components is low, and the practical application requirements can be met.
In some embodiments, referring to fig. 3, the input matching unit 121 may include: a first capacitor C1, a second capacitor C2, a third capacitor C3 and a first inductor L1;
a first inductor L1, a first end of which is connected to the first end of the first capacitor C1 and the first end of the third capacitor C3, respectively, and a second end of which is connected to the first end of the second capacitor C2 and the second end of the input matching unit 121, respectively;
a second terminal of the third capacitor C3 is connected to the first terminal of the input matching unit 121;
the second terminal of the first capacitor C1 and the second terminal of the second capacitor C2 are both grounded.
The third capacitor C3 is used for blocking; the first capacitor C1, the second capacitor C2, and the first inductor L1 form a matching network for input impedance matching, and the output power of the LORA wireless communication module can be adjusted by adjusting parameters of the first capacitor C1, the second capacitor C2, and the first inductor L1.
In some embodiments, referring to fig. 3, the output matching unit 122 may include: a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a second inductor L2;
a second inductor L2, a first end of which is connected to the first end of the fourth capacitor C4 and the first end of the output matching unit 122, respectively, and a second end of which is connected to the first end of the fifth capacitor C5;
a second terminal of the fifth capacitor C5 is connected to the first terminal of the sixth capacitor C6 and the second terminal of the output matching unit 122, respectively;
the second terminal of the fourth capacitor C4 and the second terminal of the sixth capacitor C6 are both grounded.
In a first possible implementation, the fifth capacitor C5 may be arranged at the back end. The output matching unit 122 may include: a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a second inductor L2;
a second inductor L2, a first end of which is connected to the first end of the fourth capacitor C4 and the first end of the output matching unit 122, respectively, and a second end of which is connected to the first end of the sixth capacitor C6 and the first end of the fifth capacitor C5;
a second terminal of the fifth capacitor C5 is connected to the second terminal of the output matching unit 122;
the second terminal of the fourth capacitor C4 and the second terminal of the sixth capacitor C6 are both grounded.
The fifth capacitor C5 is used for blocking; the fourth capacitor C4, the sixth capacitor C6 and the second inductor L2 form a matching network for output impedance matching. Similarly, the output power of the LORA wireless communication module can be adjusted by adjusting the parameters of the fourth capacitor C4, the sixth capacitor C6 and the second inductor L2.
In some embodiments, referring to fig. 3, the first power supply unit 123 may include: a first resistor R1 and a seventh capacitor C7;
a first resistor R1, a first end of which is connected to the output end of the first power supply unit 123, a second end of which is connected to the first end of the seventh capacitor C7, and a second end of which is also used for being connected to a first power supply;
the second terminal of the seventh capacitor C7 is connected to ground.
In some embodiments, referring to fig. 3, the second power supply unit 124 may include: a third inductor L3 and an eighth capacitor C8;
a first end of the third inductor L3 is connected to the output end of the second power supply unit 124, a second end of the third inductor L3 is connected to the first end of the eighth capacitor C8, and the second end of the third inductor L3 is further used for being connected to a second power supply;
a second terminal of the eighth capacitor C8 is connected to ground.
In some embodiments, the power amplifier transistor Q1 may be an LDMOS transistor.
LDMOS (laterally-diffused metal-oxide semiconductor)). The LDMOS has high thermal stability, high frequency stability, high gain, durability, low noise, low feedback capacitance, simple bias current circuit, constant input impedance, good IMD performance, low thermal resistance, and good AGC capability, and is widely applied to radio frequency power circuits.
In some embodiments, the serial port of the LORA communication module 11 may be an SPI communication interface.
In some embodiments, the LORA communication module 11 may include: the LLCC68 chip and a first peripheral circuit;
referring to fig. 4, a detailed circuit schematic diagram is not repeated herein.
In some embodiments, the single pole double throw switch module 13 may include: NZ5758S chip and a second peripheral circuit.
The NZ5758S chip has small volume, low loss, high isolation and high power bearing capacity, and ensures the performance of the single-pole double-throw switch module 13. Referring to fig. 5, a detailed circuit schematic diagram is not repeated herein.
Experiments prove that the transmitting power of an original circuit adopting the NZ5758S chip is 22dBm, the output power of the LORA wireless communication module provided by the embodiment of the utility model can reach 30dBm, and the transmitting power is effectively improved.
Corresponding to any of the above LORA wireless communication modules, an embodiment of the present invention further provides a wireless communication device, which includes any of the above LORA wireless communication modules and has the advantages of the LORA wireless communication module, which are not described herein again.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A LORA wireless communication module, comprising: the LORA communication module, the amplification module and the single-pole double-throw switch module;
the serial port end of the LORA communication module is used for being connected with an external main control device, the radio frequency transmitting end is connected with the first end of the amplifying module, the radio frequency receiving end is connected with the second movable end of the single-pole double-throw switch module, and the working state end is connected with the control end of the single-pole double-throw switch module;
the first movable end of the single-pole double-throw switch module is connected with the second end of the amplification module, and the fixed end of the single-pole double-throw switch module is used for being connected with an antenna;
when the LORA communication module is in a transmitting state, a path between a first movable end and a fixed end of the single-pole double-throw switch module is conducted, and a modulation signal output by the LORA communication module is amplified by the amplifying module and then output;
when the LORA communication module is in a receiving state, a passage between a second movable end and a second immovable end of the single-pole double-throw switch module is conducted, and the LORA communication module receives a signal to be demodulated.
2. The LORA wireless communication module of claim 1, wherein the LORA wireless communication module further comprises: a matching module;
the first end of the matching module is connected with the immobile end of the single-pole double-throw switch module, and the second end of the matching module is used for being connected with the antenna;
the matching module is used for output impedance matching.
3. The LORA wireless communication module of claim 1, wherein the amplification module comprises: the power amplifier comprises a power amplifier tube, an input matching unit, an output matching unit, a first power supply unit and a second power supply unit;
the grid electrode of the power amplifier tube is respectively connected with the second end of the input matching unit and the output end of the first power supply unit, the drain electrode of the power amplifier tube is respectively connected with the first end of the output matching unit and the output end of the second power supply unit, and the source electrode of the power amplifier tube is grounded;
the first end of the input matching unit is connected with the first end of the amplifying module;
and the second end of the output matching unit is connected with the second end of the amplifying module.
4. The LORA wireless communication module of claim 3, wherein the input matching unit comprises: the first capacitor, the second capacitor, the third capacitor and the first inductor;
a first end of the first inductor is connected with a first end of the first capacitor and a first end of the third capacitor respectively, and a second end of the first inductor is connected with a first end of the second capacitor and a second end of the input matching unit respectively;
the second end of the third capacitor is connected with the first end of the input matching unit;
the second end of the first capacitor and the second end of the second capacitor are both grounded.
5. The LORA wireless communication module of claim 3, wherein the output matching unit includes: a fourth capacitor, a fifth capacitor, a sixth capacitor and a second inductor;
a first end of the second inductor is connected with a first end of the fourth capacitor and a first end of the output matching unit respectively, and a second end of the second inductor is connected with a first end of the fifth capacitor;
the second end of the fifth capacitor is respectively connected with the first end of the sixth capacitor and the second end of the output matching unit;
and the second end of the fourth capacitor and the second end of the sixth capacitor are both grounded.
6. The LORA wireless communication module of claim 3, wherein the first power unit comprises: a first resistor and a seventh capacitor;
a first end of the first resistor is connected with an output end of the first power supply unit, a second end of the first resistor is connected with a first end of the seventh capacitor, and the second end of the first resistor is also used for being connected with a first power supply;
and the second end of the seventh capacitor is grounded.
7. The LORA wireless communication module of claim 3, wherein the second power unit comprises: a third inductor and an eighth capacitor;
a first end of the third inductor is connected with an output end of the second power supply unit, a second end of the third inductor is connected with a first end of the eighth capacitor, and the second end of the third inductor is also used for being connected with a second power supply;
and the second end of the eighth capacitor is grounded.
8. The LORA wireless communication module of any of claims 3-7, wherein the power amplifier tube is an LDMOS tube.
9. The LORA wireless communication module of any one of claims 1-7, wherein the serial port of the LORA communication module is an SPI communication interface.
10. A wireless communication device comprising the LORA wireless communication module of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121203719.7U CN215498958U (en) | 2021-05-28 | 2021-05-28 | LORA wireless communication module and wireless communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121203719.7U CN215498958U (en) | 2021-05-28 | 2021-05-28 | LORA wireless communication module and wireless communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215498958U true CN215498958U (en) | 2022-01-11 |
Family
ID=79781741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121203719.7U Active CN215498958U (en) | 2021-05-28 | 2021-05-28 | LORA wireless communication module and wireless communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215498958U (en) |
-
2021
- 2021-05-28 CN CN202121203719.7U patent/CN215498958U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103222188B (en) | There is impedance and increase the low-noise amplifier of circuit | |
| CN111313854B (en) | Radio frequency power amplifier circuit and gain control method | |
| CN103117711B (en) | Monolithic integrated radio frequency high-gain low-noise amplifier | |
| CN103368601B (en) | Wireless communication transceiver front end | |
| CN103580610B (en) | Multimode power amplifier and corresponding mobile communication terminal | |
| CN111293999B (en) | Broadband reconfigurable power amplifier and radar system | |
| CN114567266B (en) | Low-power-consumption low-noise broadband amplifier | |
| CN111510089B (en) | Low-noise amplifying module with bypass function and control method | |
| CN103633946A (en) | Low-noise amplifier for realizing on-chip input and output of 50-ohm matching | |
| CN103401514A (en) | Low-noise amplifier | |
| CN111600556A (en) | Low noise amplifier and radio frequency receiver | |
| CN109245731A (en) | Broadband numerical control Low Noise Variable Gain Amplifier | |
| CN116131770B (en) | High-integration-level high-linearity low-noise amplifier | |
| CN109194291A (en) | A kind of one chip low-noise amplifier of the high-gain High Linear with bypass functionality | |
| KR100471157B1 (en) | Antenna switching module having amplification function | |
| CN215498958U (en) | LORA wireless communication module and wireless communication device | |
| CN210867621U (en) | Amplitude limiting circuit and wireless receiving device | |
| US11296659B2 (en) | Switchless bi-directional amplifier using neutralized differential pair | |
| CN218633923U (en) | Passive circuit under radio frequency receiving module bypass mode and radio frequency receiving module | |
| CN116886052A (en) | Low noise amplifier and RF front-end module | |
| CN116032219A (en) | High-linearity low-noise amplifier, chip and electronic equipment | |
| CN109327194A (en) | A kind of one chip low-noise amplifier of the broadband High Linear with bypass functionality | |
| CN115208331A (en) | Low-noise bidirectional amplifier with substrate series resistor | |
| CN101527542A (en) | Minimized common mode oscillation multistage amplifier circuits, method, and integrated circuit | |
| US20110177789A1 (en) | Low noise amplifier and the uses thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |