WO2023226307A1

WO2023226307A1 - Wireless communication module and electronic device

Info

Publication number: WO2023226307A1
Application number: PCT/CN2022/129736
Authority: WO
Inventors: 哈亮
Original assignee: 上海移远通信技术股份有限公司
Priority date: 2022-05-23
Filing date: 2022-11-04
Publication date: 2023-11-30
Also published as: CN217240697U

Abstract

A wireless communication module and an electronic device, relating to the technical field of mobile communication. The wireless communication module comprises an LTE CAT1 radio frequency circuit, a microwave transceiving circuit, a baseband processor circuit, and a power management circuit. The LTE CAT1 radio frequency circuit is connected to at least one of a main antenna, a global navigation satellite system antenna and a diversity antenna; the microwave transceiving circuit is connected to an ultra-wideband (UWB) radio frequency antenna and a Bluetooth low energy (BLE) radio frequency antenna; the baseband processor circuit is respectively connected to the LTE CAT1 radio frequency circuit and the microwave transceiving circuit; and the power management circuit is respectively connected to the LTE CAT1 radio frequency circuit, the microwave transceiving circuit and the baseband processor circuit, and is connected to an external power supply. The wireless communication module achieves the cellular wireless communication function of LTE CAT1, also achieves the function of UWB wireless communication, and meets the requirements of articles on cellular communication as well as outdoor and indoor accurate positioning.

Description

Wireless communication modules and electronic equipment

Cross-references to related applications

This disclosure claims priority from the Chinese patent application with application number 202221359366.4 and titled "Wireless Communication Module and Electronic Device" filed on May 23, 2022, the entire content of which is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the field of mobile communication technology, and in particular, to a wireless communication module and an electronic device.

Background technique

With social development and technological advancement, various industries have increasing demands for indoor and outdoor positioning and navigation. For outdoor navigation, high-precision positioning and guidance can be achieved based on the support of GNSS (Global Navigation Satellite System). However, for indoor navigation, the environment is complex and it is difficult to achieve the same effect with the help of outdoor navigation technology. . In related technologies, some wireless communication modules, used as support products for indoor and outdoor positioning and navigation, lack functions for indoor positioning and cannot achieve high-precision indoor positioning technology.

Contents of the invention

A wireless communication module and electronic equipment. The wireless communication module realizes the cellular wireless communication function of LTE CAT1 (LTE UE-Category1), and also realizes the function of ultra-wideband wireless communication, solving the problem of object-to-cellular communication and outdoor and indoor accuracy. positioning needs.

In a first aspect, the present disclosure proposes a wireless communication module. The wireless communication module includes: LTE CAT1 radio frequency circuit, microwave transceiver circuit, baseband processor circuit and power management circuit. The LTE CAT1 radio frequency circuit is used to connect the main antenna. , at least one of a global navigation satellite system antenna and a diversity antenna, the microwave transceiver circuit is used to connect an ultra-wideband UWB radio frequency antenna and a low-power Bluetooth BLE radio frequency antenna, and the baseband processor circuit is respectively connected to the LTE CAT1 radio frequency circuit Connected to the microwave transceiver circuit, the power management circuit is connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit and the baseband processor circuit respectively, and is used to connect to an external power supply;

The baseband processor circuit includes: a baseband processor and a memory, and the baseband processor is respectively connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit, the memory and the power management circuit;

The baseband processor is communicatively connected to the microwave transceiver circuit through an SPI interface; the baseband processor circuit is communicatively connected to the LTE CAT1 radio frequency circuit through an in-phase quadrature IQ signal interface and a control interface;

The LTE CAT1 radio frequency circuit includes: a first signal converter, a second signal converter, a first surface acoustic filter, a second surface acoustic filter, a third surface acoustic filter, a duplexer, a low noise amplifier, a power Amplifier and radio frequency transceiver, wherein the input end of the power amplifier is connected to the radio frequency transceiver, and the first output end of the power amplifier is connected to the first signal converter through the first surface acoustic filter, The second output end of the power amplifier is connected to the first signal converter through the duplexer. The duplexer is also connected to the radio frequency transceiver. The first signal converter is also used to connect The main antenna; the input end of the second surface acoustic filter is used to connect to the global navigation satellite system antenna, and the output end of the second surface acoustic filter is connected to the radio frequency transceiver through a low noise amplifier; The input end of the second signal converter is used to connect the diversity antenna, and the output end of the second signal converter is connected to the radio frequency transceiver through the third surface acoustic filter; the radio frequency transceiver It is also communicatively connected to the baseband processor circuit through an in-phase quadrature IQ signal interface and a control interface;

The microwave transceiver circuit includes: a UWB module, a BLE module and a level conversion module. The UWB module and the BLE module are integrated to form an integrated module. The level conversion module is connected between the baseband processor and the between integrated modules;

The power management circuit includes: a power management chip and a crystal, and the power management chip is respectively connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit, the baseband processor circuit and the crystal;

The wireless communication module also includes an external communication interface, which is connected to the baseband processor. The external communication interface includes an SPI interface, a UART interface, a USB interface, a GPIO interface, an eSIM interface, and an ESAM interface. At least one of the SD interfaces.

The wireless communication module of the disclosed embodiment covers LTE CAT1 radio frequency circuit, microwave transceiver circuit, baseband processor circuit and power management circuit. The LTE CAT1 radio frequency circuit is used to connect the main antenna, global navigation satellite system antenna and diversity antenna, microwave transceiver circuit Used to connect ultra-wideband UWB radio frequency antenna and low-power Bluetooth BLE radio frequency antenna. The baseband processor circuit is connected to the LTE CAT1 radio frequency circuit and microwave transceiver circuit respectively. The power management circuit is respectively connected to the LTE CAT1 radio frequency circuit, microwave transceiver circuit and baseband processor circuit. connected and used to connect the external power supply. The LTE CAT1 radio frequency circuit realizes the cellular wireless communication function of LTE CAT1. The microwave transceiver circuit integrates ultra-wideband UWB technology and low-power Bluetooth BLE technology, realizing the dual functions of ultra-wideband UWB and low-power Bluetooth BLE, and solving the problem of item-to-cellular communication. and the need for precise positioning both outdoors and indoors.

In a second aspect, the present disclosure proposes an electronic device, including: at least one of a main antenna, a global navigation satellite system antenna, and a diversity antenna; a UWB radio frequency antenna and a BLE radio frequency antenna; a power supply; and the above-mentioned wireless communication module.

The electronic device also includes: a power supply interface base plate, the wireless communication module is welded on the power supply interface base plate, the main antenna, the global navigation satellite system antenna, the diversity antenna, the UWB radio frequency antenna, the BLE The radio frequency antenna and the power supply are both arranged on the power supply interface bottom plate;

The wireless communication module also includes an external communication interface, and the electronic device further includes: functional devices, which are communicatively connected to the wireless communication module through the external communication interface, and the functional devices include a camera, a display screen, At least one of the SIM card holder and the onboard eSIM chip;

The electronic device of the embodiment of the present disclosure realizes the cellular wireless communication function of LTE CAT1 through the above-mentioned wireless communication module. The microwave transceiver circuit integrates ultra-wideband UWB technology and low-power Bluetooth BLE technology, realizing ultra-wideband UWB and low-power Bluetooth BLE dual function solves the needs of items for cellular communication and precise outdoor and indoor positioning.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Description of the drawings

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

Figure 1 is a schematic structural diagram of a wireless communication module according to an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of a baseband processor circuit according to an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of an LTE CAT1 radio frequency circuit according to an embodiment of the present disclosure;

Figure 4 is a schematic structural diagram of a microwave transceiver circuit according to an embodiment of the present disclosure;

Figure 5 is a schematic structural diagram of a power management circuit according to an embodiment of the present disclosure;

Figure 6 is a schematic structural diagram of the external interface of the wireless communication module according to an embodiment of the present disclosure;

Figure 7 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

Figure 8 is a schematic structural diagram of a children's smart watch according to an embodiment of the present disclosure.

Detailed ways

The embodiments of the present disclosure are described in detail below. The embodiments described with reference to the drawings are exemplary, and the embodiments of the present disclosure are described in detail below.

The wireless communication module and electronic device according to the embodiment of the present disclosure will be described in detail below with reference to Figures 1-8 of the description and specific implementation modes.

Figure 1 is a schematic structural diagram of a wireless communication module according to an embodiment of the present disclosure.

In one embodiment of the present disclosure, as shown in Figure 1, the wireless communication module 100 includes: LTE CAT1 radio frequency circuit 10, microwave transceiver circuit 20, baseband processor circuit 30 and power management circuit 40. The LTE CAT1 radio frequency circuit 10 is used to Connected to at least one of the main antenna, the global navigation satellite system antenna and the diversity antenna, the microwave transceiver circuit 20 is used to connect the ultra-wideband UWB radio frequency antenna and the low-power Bluetooth BLE radio frequency antenna, and the baseband processor circuit 30 is respectively connected to the LTE CAT1 radio frequency circuit 10 Connected to the microwave transceiver circuit 20, the power management circuit 40 is connected to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20 and the baseband processor circuit 30 respectively, and is used to connect to an external power supply.

Specifically, the LTE CAT1 radio frequency circuit 10 is used to implement the wireless communication function of the cellular network. The LTE cellular network has levels from CAT1 to CAT10. The higher the level, the faster the transmission rate. Because during the movement of moving objects, the amount of data required to upload path trajectories and time information to the backend server is very small, so choosing CAT1 can meet the communication rate requirements and save costs at the same time. The model of the LTE cellular network can also be selected from any one between CAT2 and CAT10. This disclosure is not limited here. In the following description, CAT1 is used as an example. The LTE CAT1 radio frequency circuit 10 can be connected to at least one of the main antenna, the Global Navigation Satellite System antenna and the diversity antenna. Among them, the Global Navigation Satellite System antenna GNSS antenna can support my country's BDS system, the US GPS system or the Russian GLONASS system or EU's Galileo system.

More specifically, the microwave transceiver circuit 20 is used to implement ultra-wideband UWB and low-power Bluetooth BLE wireless communication functions, and connect the ultra-wideband UWB radio frequency antenna and the low-power Bluetooth BLE radio frequency antenna. The power management circuit 40 is connected to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20 and the baseband processor circuit 30, and provides the corresponding required voltage to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20 and the baseband processor circuit 30. The power management circuit 40 can be connected to an external power supply, and the external power supply supplies power to the power management module 40, or a battery can supply power to the power management module 40, which is not limited here. The baseband processor circuit 30 is connected to the LTE CAT1 radio frequency circuit 10 and the microwave transceiver circuit 20 respectively. The baseband processor circuit 30 is used to process the baseband signal from the LTE CAT1 radio frequency circuit 10 and conduct processing on the LTE CAT1 radio frequency circuit 10 and the microwave transceiver circuit 20. control.

In one embodiment of the present disclosure, as shown in Figure 2, the baseband processor circuit 30 includes: a baseband processor 1 and a memory 2. The baseband processor 1 is connected to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20, the memory 2 and the memory 2 respectively. Power management circuit 40 is connected.

Specifically, the baseband processor 1 receives the baseband signal from the LTE CAT1 radio frequency circuit 10 and the microwave transceiver circuit 20, processes the baseband signal, and feeds back the LTE CAT1 radio frequency circuit 10 and the microwave transceiver circuit 20 according to the processed baseband signal. The baseband processor 1 is connected to the memory 2. The baseband processor 1 stores the processed data in the memory 2 to realize information interaction with the memory 2. The power management circuit 40 is used to power the baseband processor 1 and the memory 2 and provide the voltage required by the baseband processor 1 and the memory. The voltage required by the baseband processor may be 1.8V. A communication interface is required for the baseband processor 1 to communicate with the LTE CAT1 radio frequency circuit 10 and the microwave transceiver circuit 20.

In one embodiment of the present disclosure, the baseband processor 1 can be communicatively connected to the microwave transceiver circuit 10 through an SPI interface; the baseband processor 1 can be communicatively connected to the LTE CAT1 radio frequency circuit through an in-phase quadrature IQ signal interface and a control interface.

Specifically, the baseband processor 1 and the microwave transceiver circuit 20 communicate through the SPI (Serial Peripheral Interface, serial peripheral interface) interface. The communication clock rate of the SPI interface is greater than the first preset rate, such as 8MHz. The baseband processor 1 and LTE The CAT1 radio frequency circuit 10 communicates through an IQ (In-Phase Quadrature, phase difference of 90 degrees) signal interface, and the communication clock rate of the IQ signal interface is greater than the second preset rate, such as 10MHz.

It should be noted that the voltage domain of the baseband processor 1 may be 1.8V, the operating voltage of the microwave transceiver circuit 20 may be 3.3V, and the voltage domain of the LTE CAT1 radio frequency circuit 10 may be 1.8V. Since the operating voltages of the microwave transceiver circuit 20 and the baseband processor 1 are not equal, a level conversion circuit is required for voltage conversion when the baseband processor 1 communicates with the microwave transceiver circuit 20. The operating voltage of the baseband processor 1 and the LTE CAT1 radio frequency circuit 10 can both be 1.8V, so there is no need for level conversion when the baseband processor 1 communicates with the LTE CAT1 radio frequency circuit 10.

In one embodiment of the present disclosure, as shown in Figure 3, the LTE CAT1 radio frequency circuit 10 includes: a first signal converter Switch1, a second signal converter Switch2, a first surface acoustic filter SAW1, a second surface acoustic filter SAW2, the third surface acoustic filter SAW3, the duplexer Duplex, the low noise amplifier LNA, the power amplifier PA and the radio frequency transceiver Transceiver. Among them, the input end of the power amplifier PA is connected to the radio frequency transceiver Transceiver, and the first terminal of the power amplifier PA The output end is connected to the first signal converter Switch1 through the first surface acoustic filter SAW1. The second output end of the power amplifier PA is connected to the first signal converter Switch1 through the duplexer Duplex. The duplexer Duplex is also connected to the radio frequency transceiver. Transceiver is connected, the first signal converter Switch1 is also used to connect the main antenna ANT-MAIN; the input end of the second surface acoustic filter SAW2 is used to connect the global navigation satellite system antenna ANT-GNSS, and the output of the second surface acoustic filter SAW2 The terminal is connected to the RF transceiver Transceiver through the low noise amplifier LNA; the input terminal of the second signal converter Switch2 is used to connect the diversity antenna ANT-DIV, and the output terminal of the second signal converter Switch2 is connected to the RF transceiver through the third surface acoustic filter SAW3 The transceiver Transceiver is connected; the radio frequency transceiver Transceiver is also connected to the baseband processor circuit 30 through an in-phase quadrature IQ signal interface and a control interface.

Specifically, the LTE CAT1 radio frequency circuit 10 is externally connected to the main antenna ANT-MAIN, the global navigation satellite system antenna ANT-GNSS and the diversity antenna ANT-DIV. Among them, the global navigation satellite system antenna ANT-GNSS and the diversity antenna ANT-DIV can only receive radio frequencies. signal, and the main antenna ANT-MAIN can both receive and transmit RF signals. When the LTE CAT1 radio frequency circuit 10 transmits a radio frequency signal, the radio frequency transceiver transmits the modulated transmission signal to the power amplifier PA (Power Amplifier) for amplification. After amplification, it passes through the first surface acoustic filter SAW (Surface Acoustic Wave) 1 and The combination of the duplexer Duplex passes through the first signal converter Switch1. The signal converter here is equivalent to the radio frequency switch, and finally the signal is radiated through the main antenna ANT-MAIN; when the main antenna ANT-MAIN receives the signal, it passes through the first The signal converter Switch1 then receives the modulated signal to the radio frequency transceiver Transceiver for demodulation processing through the duplexer Duplex, and then sends the demodulated baseband signal to the baseband processor circuit 30 for processing.

More specifically, when the global navigation satellite system antenna ANT-GNSS receives a radio frequency signal, it first filters the noise in the radio frequency signal through the second surface acoustic filter SAW2, and then amplifies the radio frequency signal through a low noise amplifier LNA (Low Noise Amplifier) before transmitting it. Processed by the RF transceiver Transceiver; when the diversity antenna ANT-DIV receives the RF signal, the second signal converter Switch2 is turned on to receive the RF signal, and then filters the noise in the RF signal through the third surface acoustic filter SAW3, and finally transmits it to the RF signal. Transceiver is processed.

The disclosed wireless communication function through the cellular network is implemented by the LTE CAT1 radio frequency circuit 10, while the indoor precise positioning function through ultra-wideband UWB and low-power Bluetooth BLE is implemented by the microwave transceiver circuit 20.

In one embodiment of the present disclosure, as shown in Figure 4, the microwave transceiver circuit 20 includes: UWB module 3, BLE module 4 and level conversion module 6. The UWB module 3 and BLE module 4 are integrated to form an integrated module 5. The level conversion module 6 is connected between the baseband processor 1 and the integrated module 5 .

Specifically, the ultra-wideband UWB module 3 of the microwave transceiver circuit 20 is externally connected to the ultra-wideband antenna ANT-UWB to realize the function of wireless communication through ultra-wideband UWB, and the BLE module 4 is externally connected to the low-power Bluetooth antenna ANT-BLE to realize the function of wireless communication through low-power Bluetooth BLE wireless communication capabilities. The microwave transceiver circuit 20 needs to have both ultra-wideband UWB and low-power Bluetooth BLE wireless communication functions, which means that the chip of the microwave transceiver circuit 20 needs to have microwave transceiver functions in two frequency bands to achieve dual-frequency positioning. Optional, The interface chip of the microwave transceiver circuit 20 can be a TSG5162 chip. The model of the interface chip of the microwave transceiver circuit 20 is not limited here, as long as it can realize the microwave transceiver function in two frequency bands. The interface chip of the microwave transceiver circuit 20 can use positioning algorithms such as AOA or AOT to achieve precise indoor positioning. At the same time, the baseband processor 1 controls the interface chip of the microwave transceiver circuit 20 to implement protocol processing of ultra-wideband UWB and low-power Bluetooth BLE.

More specifically, since the working voltage of the baseband processor 1 is not equal to the working voltage of the integrated module 5 in the microwave transceiver circuit 20, communication between the baseband processor circuit 30 and the microwave transceiver circuit 20 needs to be performed through the level conversion module 6 Level conversion, the level conversion module 6 completes the voltage conversion of the baseband processor 1 and the integrated module 5 in the microwave transceiver circuit 20 through the SPI interface.

It should be noted that since the radio frequency transmission and reception of UWB module 3 and BLE module 4 are separate, two microstrip array antennas need to be used to implement microwave transmission and reception. At the same time, the receiving sensitivity of UWB module 3 and BLE module 4 is relatively high. The attenuation on the RF cable does not affect the performance of the whole machine, so there is no need to add a low-noise amplifier to the RF receiving path to amplify the power. The voltage of the level conversion module 6 is also provided by the power management circuit 40 .

In one embodiment of the present disclosure, as shown in Figure 5, the power management circuit 40 includes: a power management chip 7 and a crystal 8. The power management chip 7 is connected to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20, and the baseband processor circuit respectively. 30 is connected to crystal 8.

Specifically, the power management chip 7 is connected to an external power supply, and the voltage input range of the external power supply can be 3.4V-4.3V. Optionally, the voltage of the external power supply is a typical input of 3.8V. The power management chip 7 converts the input 3.8V voltage into the 1.8V voltage required by the LTE CAT1 radio frequency circuit 10, and the maximum current does not exceed 2A; it converts the input 3.8V into the 3.3V voltage required by the microwave transceiver circuit 20, and the maximum current does not exceed 0.2A; convert the input 3.8V into the 1.8V voltage required by the baseband processor circuit 30, and the maximum current does not exceed 0.8A. At the same time, the power management chip 7 needs to be connected to an external crystal 8 to generate a clock required by the baseband processor 1 and provide it to the baseband processor. The frequency of the clock generated by the crystal 8 can be 19.2 MHz.

Further specifically, as shown in Figure 6, the power management chip 7 not only provides power to the LTE CAT1 radio frequency circuit 10, the microwave transceiver circuit 20 and the baseband processor circuit 30 as a whole, but also includes the first signal conversion for the LTE CAT1 radio frequency circuit 10. The converter Switch1, the second signal converter Switch2, the power amplifier PA, the low noise amplifier LNA and the radio frequency transceiver Transceiver provide power to the integrated module 5 and the level conversion module 6 of the microwave transceiver circuit 20, and also to the baseband processor circuit 30 provides power to the baseband processor 1 and memory 2.

In one embodiment of the present disclosure, as shown in Figure 6, the wireless communication module 100 also includes an external communication interface, which is connected to the baseband processor 1, where the external communication interface includes an SPI interface, a UART interface, a USB interface, At least one of the GPIO interface, eSIM interface, ESAM interface, and SD interface.

The wireless communication module of the disclosed embodiment includes an LTE CAT1 radio frequency circuit, a microwave transceiver circuit, a baseband processor circuit and a power management circuit. The LTE CAT1 radio frequency circuit is used to connect the main antenna, the global navigation satellite system antenna and the diversity antenna. The microwave transceiver circuit is used to connect the main antenna, the global navigation satellite system antenna and the diversity antenna. The circuit is used to connect the ultra-wideband UWB RF antenna and the low-power Bluetooth BLE RF antenna. The baseband processor circuit is connected to the LTE CAT1 RF circuit and the microwave transceiver circuit respectively. The power management circuit is connected to the LTE CAT1 RF circuit, the microwave transceiver circuit and the baseband processor respectively. The circuit is connected and used to connect the external power supply. The LTE CAT1 radio frequency circuit realizes the cellular wireless communication function of LTE CAT1. The microwave transceiver circuit integrates ultra-wideband UWB technology and low-power Bluetooth BLE technology, realizing the dual functions of ultra-wideband UWB and low-power Bluetooth BLE, and solving the problem of item-to-cellular communication. and the need for precise positioning both outdoors and indoors.

Based on the above wireless communication module, the present disclosure also provides an electronic device.

In one embodiment of the present disclosure, as shown in Figure 7, the electronic device 1000 includes at least one of a main antenna, a global navigation satellite system antenna and a diversity antenna in the LTE CAT1 radio frequency circuit antenna 300, and the microwave transceiver circuit antenna 400 UWB radio frequency antenna and BLE radio frequency antenna, power supply 200 and the above-mentioned wireless communication module 100.

Specifically, the LTE CAT1 radio frequency circuit antenna 300 provides signals to the LTE CAT1 radio frequency circuit 10 in the wireless communication module 100, and the microwave transceiver circuit antenna 400 provides signals to the UWB module and BLE module in the wireless communication module 100. The power supply 200 is connected to the power management circuit 40 in the wireless communication module 100 and provides power. In addition to providing power, the power supply 200 also includes a power protection circuit.

It should be noted that the microwave transceiver circuit antenna 400 may be an onboard antenna or an external antenna.

As an example, as shown in FIG. 8 , the electronic device 1000 may be a children's smart watch.

In one embodiment of the present disclosure, the children's smart watch electronic device 1000 also includes: a power supply interface base plate, the wireless communication module 100 is welded on the power supply interface base plate, a main antenna, a global navigation satellite system antenna, a diversity antenna, a UWB radio frequency antenna, a BLE The radio frequency antenna and power supply are both set on the power supply interface base plate.

Specifically, the wireless communication module 100 cannot be used alone and needs to be welded on the power supply interface base plate. The wireless communication module 100 serves as the core unit. The power supply interface base plate needs to be designed with a main antenna, a diversity receiving antenna, a GNSS receiving antenna, a UWB radio frequency antenna and a BLE radio frequency antenna. For communication, the power supply 200 can be a battery, that is, the battery is used to directly power the wireless communication module 100, and the voltage provided by the power supply 200 is 3.8V.

In one embodiment of the present disclosure, the wireless communication module 100 in the children's smart watch electronic device 1000 also includes an external communication interface. The children's smart watch electronic device 1000 further includes: a functional device 500. The functional device 500 communicates with the wireless communication module through the external communication interface. For communication connection, the functional device 500 includes at least one of a camera, a display screen, a SIM card holder, and an onboard eSIM chip.

Specifically, the communication interfaces of the camera Camera and the display screen LCD can communicate with the wireless communication module 100 through an SPI interface, a GPIO interface, or an INT interface, and the working voltage of the camera Camera and the display screen LCD can be 1.8V or 2.8V.

More specifically, the wireless communication module 100 reserves two ISO7816 interfaces, so the two communication interfaces designed on the power supply interface chassis are also ISO7816. One is used to communicate with the SIM card or eSIM (Embedded-SIM, embedded SIM) card. Use It is used for identity authentication of cellular networking, and the other is used to communicate with the secure access module SAM (Secure Access Module, Security Control Module) used as BLE communication, and is used for identity authentication of BLE as a payment channel.

The children's smart watch electronic device 1000 according to the embodiment of the present disclosure can achieve precise indoor and outdoor positioning, and parents can know the location of their children more accurately.

The wireless communication module and electronic device of the disclosed embodiment realize the cellular wireless communication function of LTE CAT1 through the LTE CAT1 radio frequency circuit, and also realize the wireless communication function of ultra-wideband and low-power Bluetooth integration through the microwave transceiver circuit, solving the problem Objects require cellular communications and precise positioning outdoors and indoors.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be incorporated into the description of the implementation. An example or example describes a specific feature, structure, material, or characteristic that is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the disclosure. The scope of the disclosure is defined by the claims and their equivalents.

Claims

A wireless communication module, characterized in that the wireless communication module includes: LTE CAT1 radio frequency circuit, microwave transceiver circuit, baseband processor circuit and power management circuit, the LTE CAT1 radio frequency circuit is used to connect the main antenna and global navigation satellites At least one of the system antenna and the diversity antenna, the microwave transceiver circuit is used to connect the ultra-wideband UWB radio frequency antenna and the low-power Bluetooth BLE radio frequency antenna, and the baseband processor circuit is respectively connected to the LTE CAT1 radio frequency circuit and the microwave The transceiver circuit is connected, and the power management circuit is connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit and the baseband processor circuit respectively, and is used to connect to an external power supply.
The wireless communication module according to claim 1, wherein the baseband processor circuit includes: a baseband processor and a memory, and the baseband processor is connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit, and the The memory is connected to the power management circuit.
The wireless communication module according to claim 1, characterized in that:

The baseband processor is communicatively connected to the microwave transceiver circuit through an SPI interface;

The baseband processor is communicatively connected to the LTE CAT1 radio frequency circuit through an in-phase quadrature IQ signal interface and a control interface.
The wireless communication module according to claim 3, characterized in that the LTE CAT1 radio frequency circuit includes: a first signal converter, a second signal converter, a first surface acoustic filter, a second surface acoustic filter, a third Triacoustic meter filters, duplexers, low noise amplifiers, power amplifiers and RF transceivers, among which,

The input end of the power amplifier is connected to the radio frequency transceiver, the first output end of the power amplifier is connected to the first signal converter through the first surface acoustic filter, and the second end of the power amplifier The output end is connected to the first signal converter through the duplexer, the duplexer is also connected to the radio frequency transceiver, and the first signal converter is also used to connect the main antenna;

The input end of the second surface acoustic filter is used to connect to the global navigation satellite system antenna, and the output end of the second surface acoustic filter is connected to the radio frequency transceiver through a low noise amplifier; the second signal The input end of the converter is used to connect the diversity antenna, and the output end of the second signal converter is connected to the radio frequency transceiver through the third surface acoustic filter;

The radio frequency transceiver is also communicatively connected to the baseband processor circuit through an in-phase quadrature IQ signal interface and a control interface.
The wireless communication module according to claim 4, wherein the microwave transceiver circuit includes: a UWB module, a BLE module and a level conversion module, and the UWB module and the BLE module are integrated to form an integrated module. The level conversion module is connected between the baseband processor and the integrated module.
The wireless communication module according to claim 5, wherein the power management circuit includes: a power management chip and a crystal, and the power management chip is respectively connected to the LTE CAT1 radio frequency circuit, the microwave transceiver circuit, and the Baseband processor circuitry is connected to the crystal.
The wireless communication module according to claim 1, characterized in that the wireless communication module further includes an external communication interface, the external communication interface is connected to the baseband processor, wherein the external communication interface includes an SPI interface, At least one of UART interface, USB interface, GPIO interface, eSIM interface, ESAM interface, and SD interface.
An electronic device, characterized by including:

At least one of the main antenna, the GNSS antenna and the diversity antenna;

UWB RF antenna and BLE RF antenna;

power supply;

The wireless communication module according to any one of claims 1-7.
The electronic device according to claim 8, characterized in that the electronic device further includes: a power supply interface base plate, the wireless communication module is welded on the power supply interface base plate, the main antenna, the global navigation satellite system The antenna, the diversity antenna, the UWB radio frequency antenna, the BLE radio frequency antenna and the power supply are all arranged on the power supply interface base plate.
The electronic device according to claim 8, characterized in that the wireless communication module further includes an external communication interface, the electronic device further includes: a functional device, the functional device communicates with the wireless communication through the external communication interface. Module communication connection, the functional device includes at least one of a camera, a display screen, a SIM card holder, and an onboard eSIM chip.