CN219761022U - High-sensitivity wireless transceiver module - Google Patents
High-sensitivity wireless transceiver module Download PDFInfo
- Publication number
- CN219761022U CN219761022U CN202321151019.7U CN202321151019U CN219761022U CN 219761022 U CN219761022 U CN 219761022U CN 202321151019 U CN202321151019 U CN 202321151019U CN 219761022 U CN219761022 U CN 219761022U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- receiving
- transmitting
- circuit
- antenna
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 67
- 230000035945 sensitivity Effects 0.000 claims abstract description 17
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001629 suppression Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 235000015429 Mirabilis expansa Nutrition 0.000 description 2
- 244000294411 Mirabilis expansa Species 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 235000013536 miso Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transceivers (AREA)
Abstract
The utility model discloses a high-sensitivity wireless transceiver module, relates to the technical field of the Internet of things, and solves the technical problems that the transceiver sensitivity is improved through multi-band support, chips and network protocol dimensions in an Internet of things receiving module, the technical implementation is complex, and the cost is high. The module comprises a receiving-transmitting chip, a crystal oscillator unit, a transmitting circuit, a receiving circuit, a radio frequency switch and an antenna unit; the crystal oscillator unit, the receiving circuit and the transmitting circuit are all connected with the receiving-transmitting chip; the antenna unit is connected with the transmitting circuit and the receiving circuit through the radio frequency switch; the antenna unit comprises a receiving and transmitting antenna and a matching circuit, and the matching circuit comprises a first capacitor C20, a second capacitor C21, a third capacitor C22, a fourth capacitor C23 and a first inductor L8; the transceiver antenna is an IPEX antenna, the working frequency is 370-600 MHz, and the working frequency is 740-1200 MHz. According to the utility model, the matching circuit is arranged on the receiving and transmitting antenna, so that the effects of impedance matching and harmonic suppression are achieved, and the sensitivity of the wireless receiving and transmitting module is improved.
Description
Technical Field
The utility model relates to the technical field of the Internet of things, in particular to a high-sensitivity wireless transceiver module.
Background
The internet of things (Internet of Things, ioT for short) is a technology for realizing intelligent sensing, identification and management of objects and processes by collecting various needed information such as sound, light, heat, electricity, mechanics, chemistry, biology, positions and the like of the objects or processes in real time through various devices and technologies such as an information sensor, a radio frequency identification technology, a global positioning system, an infrared sensor, a laser scanner and the like. The specific application scene is such as a door magnetic sensor, a smoke detector, a PIR human body infrared detector, a water immersion detector and the like.
In the technology of internet of things, the emphasis is placed on improving the perception sensitivity of a perception module to various information such as sound, light, heat, electricity, mechanics, chemistry, biology, position and the like. The wireless transceiver module is a tie for connecting the sensing network and the traditional communication network, and is also a key infrastructure for sensing data acquisition of the Internet of things. Because the sensing network is generally widely distributed in space and faces different data receiving and transmitting environments, the sensitivity of the receiving and transmitting module is also effectively guaranteed for the working reliability of the Internet of things, the distribution of the spatial distance of the sensing module is influenced, the sensitivity of the wireless receiving and transmitting module is improved, so that a wireless product has the capability of capturing weak signals more strongly, and the sensing data acquisition capability is improved to a certain extent. In the prior art, the transceiving sensitivity of the internet of things is generally improved through multi-band support (publication number CN 208258094U), a specific chip (publication number CN 106374967A), a new network protocol (publication number CN 102761941A) and the like, the technical implementation is complex, the cost is high, and the transceiving sensitivity is improved in an antenna unit.
In carrying out the present utility model, the applicant has found that at least the following problems exist in the prior art:
in the existing internet of things receiving module, the receiving and transmitting sensitivity is generally improved through multi-band support, chips and network protocol dimensions, the technology is complex to realize, and the cost is high.
Disclosure of Invention
The utility model aims to provide a high-sensitivity wireless receiving and transmitting module, which aims to solve the technical problems that in the receiving module of the Internet of things in the prior art, the receiving and transmitting sensitivity is improved generally through multi-band support, chips and network protocol dimensions, the technical implementation is complex, and the cost is high. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a high-sensitivity wireless transceiver module, which comprises a transceiver chip, a crystal oscillator unit, a transmitting circuit, a receiving circuit, a radio frequency switch and an antenna unit, wherein the transceiver chip is connected with the crystal oscillator unit; the crystal oscillator unit, the receiving circuit and the transmitting circuit are all connected with the receiving-transmitting chip; the antenna unit is connected with the transmitting circuit and the receiving circuit through the radio frequency switch; the antenna unit comprises a receiving antenna and a matching circuit, and the matching circuit comprises a first capacitor C20, a second capacitor C21, a third capacitor C22, a fourth capacitor C23 and a first inductor L8; one end of the first capacitor C20 is connected with the third capacitor C22 and the first inductor L8, and the other end of the first capacitor C is grounded; the other end of the third capacitor is connected with the RFC end of the single-pole double-throw switch; the other end of the first inductor L8 is connected with the second capacitor C21 and the fourth capacitor C23; the other end of the second capacitor C21 is grounded, and the other end of the fourth capacitor C23 is connected with the receiving and transmitting antenna; the receiving and transmitting antenna is an IPEX antenna, and the working frequency is 370-600 MHz and 740-1200 MHz.
Preferably, the radio frequency switch is a single-pole double-throw switch, the RFC end of the single-pole double-throw switch is connected with the antenna unit, the RF1 end and the RF2 end of the single-pole double-throw switch are respectively connected with the receiving circuit and the transmitting circuit, and the VC1 end and the VC2 end of the single-pole double-throw switch are respectively connected with the 32 # pin and the 31 # pin of the transceiver chip.
Preferably, the VC1 end of the single pole double throw switch is further connected to a fifth capacitor C43, and the other end of the fifth capacitor C43 is grounded; the VC2 end of the double-throw switch is also connected with a sixth capacitor C41, and the other end of the sixth capacitor C41 is grounded.
Preferably, the capacitance values of the third capacitor C22, the fourth capacitor C23, the fifth capacitor C43 and the sixth capacitor C41 are all 100pF.
Preferably, the nominal frequency of the crystal oscillator is 32MHz, the frequency error is 10ppm, and the load capacitance is 20pF.
Preferably, the transceiver module forms an outgoing interface through a connector J1 and a connector J2, and the number of pins of the connector J1 and the connector J2 is 8, and SMD packaging is adopted.
Preferably, the connector J2 is capable of providing a four-wire SPI interface.
Preferably, the transmitting circuit is connected with a 24-pin of the transceiver chip and is used for outputting high-power PA at a transmitting end.
By implementing one of the technical schemes, the utility model has the following advantages or beneficial effects:
according to the utility model, the matching circuit consisting of 4 capacitors and 1 inductor is arranged on the receiving and transmitting antenna, so that the antenna is better matched, and the effects of impedance matching and harmonic suppression are achieved, thereby improving the sensitivity of the wireless receiving and transmitting module, being applicable to ultra-long-distance spread spectrum communication, being simpler in technical realization of more frequency band support, chip and network protocol dimension improvement receiving and transmitting sensitivity and lower in cost.
Drawings
For a clearer description of the technical solutions of embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, in which:
fig. 1 is a circuit diagram of a high sensitivity wireless transceiver module according to an embodiment of the present utility model.
Detailed Description
For a better understanding of the objects, technical solutions and advantages of the present utility model, reference should be made to the various exemplary embodiments described hereinafter with reference to the accompanying drawings, which form a part hereof, and in which are described various exemplary embodiments which may be employed in practicing the present utility model. The same reference numbers in different drawings identify the same or similar elements unless expressly stated otherwise. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatuses, etc. that are consistent with certain aspects of the present disclosure as detailed in the appended claims, other embodiments may be utilized, or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present disclosure.
In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," and the like are used in an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and to simplify the description, rather than to indicate or imply that the elements referred to must have a particular orientation, be constructed and operate in a particular orientation. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" means two or more. The terms "connected," "coupled" and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, communicatively connected, directly connected, indirectly connected via intermediaries, or may be in communication with each other between two elements or in an interaction relationship between the two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In order to illustrate the technical solutions of the present utility model, the following description is made by specific embodiments, only the portions related to the embodiments of the present utility model are shown.
Embodiment one:
as shown in FIG. 1, the present utility model provides a high-sensitivity wireless transceiver module, which comprises a transceiver chip, a crystal oscillator unit, a transmitting circuit, a receiving circuit, a radio frequency switch and an antenna unit. The model of the transceiver chip is preferably PAN3028, which has 33 pins and can support four bandwidths of 62.5KHz, 125KHz, 250KHz and 500KHz and 6 GPIOs. The crystal oscillator unit, the receiving circuit and the transmitting circuit are all connected with the transceiving chip, the crystal oscillator unit is connected with the 15 pins and the 16 pins of the transceiving chip, the receiving circuit is connected with the 18 pins and the 19 pins of the transceiving chip, and the transmitting circuit is connected with the 24 pins of the transceiving chip. The antenna unit is connected with the transmitting circuit and the receiving circuit through the radio frequency switch, and the radio frequency switch is convenient for switching the connection of the antenna unit with the transmitting circuit and the receiving circuit according to the requirement. The antenna unit comprises a receiving and transmitting antenna and a matching circuit, and the matching circuit comprises a first capacitor C20, a second capacitor C21, a third capacitor C22, a fourth capacitor C23 and a first inductor L8; one end of the first capacitor C20 is connected with the third capacitor C22 and the first inductor L8, and the other end of the first capacitor C is grounded; the other end of the third capacitor is connected with the RFC end of the single-pole double-throw switch; the other end of the first inductor L8 is connected with a second capacitor C21 and a fourth capacitor C23; the other end of the second capacitor C21 is grounded, the other end of the fourth capacitor C23 is connected with a receiving and transmitting antenna, and impedance matching of the antenna is achieved through combination of the capacitor and the inductor. The transceiver antenna is an IPEX antenna, the IPEX antenna is convenient to install, the working frequency is 370-600 MHz, and 740-1200 MHz, the frequency range is relatively low, the wireless communication protocol is mature, the data transceiver requirement of a sensing network in a complex scene of the use of the Internet of things can be met, and the transceiver antenna preferably further comprises an SMD interface U2 to form a patch antenna. According to the utility model, the matching circuit consisting of 4 capacitors and 1 inductor is arranged on the receiving and transmitting antenna, so that the antenna is better matched, the effects of impedance matching and harmonic suppression are achieved, the sensitivity of the wireless receiving and transmitting module is improved, the sensitivity of-140 dBm can be achieved by matching with a PAN3028 chip, the wireless receiving and transmitting module can be used for ultra-long-distance spread spectrum communication, and the technology for improving the receiving and transmitting sensitivity by more frequency band support, chip and network protocol dimension is simpler to realize and lower in cost.
As an alternative implementation mode, the radio frequency switch is a single-pole double-throw switch, the model is preferably CKRF2179MM26, the radio frequency switch comprises 6 pins, the working frequency is 0.05-3.0 GHz, and the radio frequency switch is applicable to the frequency range of the utility model, and has low insertion loss and high isolation. The RFC end of the single-pole double-throw switch is connected with the antenna unit, the RF1 end and the RF2 end of the single-pole double-throw switch are respectively connected with the receiving circuit and the transmitting circuit, and the VC1 end and the VC2 end of the single-pole double-throw switch are respectively connected with the 32-number pin and the 31-number pin of the transceiver chip. The VC1 end of the single-pole double-throw switch is also connected with a fifth capacitor C43, and the other end of the fifth capacitor C43 is grounded; the VC2 end of the double-throw switch is also connected with a sixth capacitor C41, and the other end of the sixth capacitor C41 is grounded. The capacitance values of the third capacitor C22, the fourth capacitor C23, the fifth capacitor C43 and the sixth capacitor C41 are all 100pF.
As an alternative embodiment, the nominal frequency of the crystal oscillator is 32MHz, the frequency error is 10ppm, and the load capacitance is 20pF. The crystal oscillator of this parameter can meet the working requirements of the present utility model.
As an alternative implementation manner, the transceiver module forms an outgoing interface through the connector J1 and the connector J2, the number of pins of the connector J1 and the connector J2 is 8, and SMD packages are adopted. The connector J2 can provide four-wire SPI interface, four corresponding pins are SCK, NSS, MOSI, MISO, SCK is synchronous clock, NSS is chip selection signal, when NSS signal is low level, chip selection is effective, SPI master-slave mode communication is started, MOSI is master-slave input, MISO is master-slave input. And the configuration access to registers and FIFO in the chip is facilitated in a four-wire SPI mode.
As an optional implementation mode, the transmitting circuit is connected with a 24-pin of the transceiver chip and is used for outputting high-power PA at the transmitting end, and the signal intensity of data transmission can be improved through the output of the high-power amplifier PA, so that the sensing module is convenient for data reception.
The embodiment is a specific example only and does not suggest one such implementation of the utility model.
The foregoing is only illustrative of the preferred embodiments of the utility model, and it will be appreciated by those skilled in the art that various changes in the features and embodiments may be made and equivalents may be substituted without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. The high-sensitivity wireless transceiver module is characterized by comprising a transceiver chip, a crystal oscillator unit, a transmitting circuit, a receiving circuit, a radio frequency switch and an antenna unit; the crystal oscillator unit, the receiving circuit and the transmitting circuit are all connected with the receiving-transmitting chip; the antenna unit is connected with the transmitting circuit and the receiving circuit through the radio frequency switch; the antenna unit comprises a receiving antenna and a matching circuit, and the matching circuit comprises a first capacitor C20, a second capacitor C21, a third capacitor C22, a fourth capacitor C23 and a first inductor L8; one end of the first capacitor C20 is connected with the third capacitor C22 and the first inductor L8, and the other end of the first capacitor C is grounded; the other end of the third capacitor is connected with the RFC end of the single-pole double-throw switch; the other end of the first inductor L8 is connected with the second capacitor C21 and the fourth capacitor C23; the other end of the second capacitor C21 is grounded, and the other end of the fourth capacitor C23 is connected with the receiving and transmitting antenna; the receiving and transmitting antenna is an IPEX antenna, and the working frequency is 370-600 MHz and 740-1200 MHz.
2. The high-sensitivity wireless transceiver module according to claim 1, wherein the radio frequency switch is a single-pole double-throw switch, the RFC end of the single-pole double-throw switch is connected with an antenna unit, the RF1 end and the RF2 end of the single-pole double-throw switch are respectively connected with the receiving circuit and the transmitting circuit, and the VC1 end and the VC2 end of the single-pole double-throw switch are respectively connected with a pin number 32 and a pin number 31 of the transceiver chip.
3. The high-sensitivity wireless transceiver module according to claim 2, wherein a fifth capacitor C43 is further connected to the VC1 end of the single pole double throw switch, and the other end of the fifth capacitor C43 is grounded; the VC2 end of the double-throw switch is also connected with a sixth capacitor C41, and the other end of the sixth capacitor C41 is grounded.
4. The high-sensitivity wireless transceiver module according to claim 2, wherein the capacitance values of the third capacitor C22, the fourth capacitor C23, the fifth capacitor C43 and the sixth capacitor C41 are all 100pF.
5. The high sensitivity wireless transceiver module of claim 1, wherein the crystal oscillator has a nominal frequency of 32MHz, a frequency error of 10ppm, and a load capacitance of 20pF.
6. The high-sensitivity wireless transceiver module of claim 1, wherein the transceiver module forms a connection interface through a connector J1 and a connector J2, and the number of pins of the connector J1 and the connector J2 is 8, and SMD packages are adopted.
7. The high sensitivity wireless transceiver module of claim 6, wherein the connector J2 is capable of providing a four-wire SPI interface.
8. The high-sensitivity wireless transceiver module of claim 1, wherein the transmitting circuit is connected to pin 24 of the transceiver chip for transmitting high-power PA output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321151019.7U CN219761022U (en) | 2023-05-12 | 2023-05-12 | High-sensitivity wireless transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321151019.7U CN219761022U (en) | 2023-05-12 | 2023-05-12 | High-sensitivity wireless transceiver module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219761022U true CN219761022U (en) | 2023-09-26 |
Family
ID=88073766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321151019.7U Active CN219761022U (en) | 2023-05-12 | 2023-05-12 | High-sensitivity wireless transceiver module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219761022U (en) |
-
2023
- 2023-05-12 CN CN202321151019.7U patent/CN219761022U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112260717B (en) | Ultra-wideband measurement assembly, device and system | |
| CN110808757A (en) | Radio frequency front-end circuit and terminal equipment | |
| CN219761022U (en) | High-sensitivity wireless transceiver module | |
| CN103501204B (en) | A kind of X-band power output telemetry-acquisition device | |
| CN110794361B (en) | Binary channels tacan signal reconnaissance device | |
| CN209046629U (en) | A kind of channel reception device based on millimeter wave | |
| Qi et al. | Low-power and compact microwave RFID reader for sensing applications in space | |
| Keehr | A low-cost software-defined UHF RFID reader with active transmit leakage cancellation | |
| CN111194083B (en) | Radio positioning system and positioning method thereof | |
| CN213547523U (en) | Active 5GNR time division synchronous antenna detection system and antenna thereof | |
| Galler et al. | Implementation aspects of an SDR based EPC RFID reader testbed | |
| CN214252425U (en) | Data processing system based on hand-held electromagnetic spectrum monitoring facilities | |
| CN114520670B (en) | Ultra-wideband communication system and electronic equipment | |
| CN114844520A (en) | Radio frequency system and SAR value regulation and control method | |
| CN102147456B (en) | Maritime radio communication monitoring and direction finding system | |
| CN211930627U (en) | Radio ranging system | |
| CN208569664U (en) | A kind of electronic mark reader | |
| CN114389647B (en) | Electronic equipment | |
| CN218958912U (en) | Dual radio frequency circuit, electronic equipment board card and electronic equipment | |
| CN219802497U (en) | Multi-mode meter reading device | |
| CN114868344B (en) | Directional calibration device, method, chipset, device and readable storage medium for bidirectional coupler | |
| CN211908799U (en) | WIFI and bluetooth two unification modules with a plurality of printed antenna | |
| CN217932718U (en) | Data monitoring and acquisition circuit based on RFID and device thereof | |
| CN108429554B (en) | 5G signal receiving and transmitting circuit, method and device of router, router and medium | |
| CN212781208U (en) | Continuous wave radar receiving and transmitting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |