Communication module and communication device
By introducing a switching switch and processor into the communication module, the problem of functional abandonment caused by insufficient antenna quantity is solved, ensuring that all communication functions can work normally when the number of antennas is insufficient, thus improving the adaptability and flexibility of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FIBOCOM TECHNOLOGY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-31
AI Technical Summary
Due to limitations in equipment structure, existing communication modules have an insufficient number of antennas, resulting in the inability to use some communication functions and the inability to simultaneously achieve diversity communication and GNSS positioning functions.
The design employs a first antenna interface, a second antenna interface, a first radio frequency module, a second radio frequency module, a switch, and a processor. By using the switch, when the first antenna interface is not connected, the connection between the first radio frequency module and the second antenna interface is established, ensuring that both radio frequency modules can operate normally through the second antenna.
This enables the normal use of all communication functions even when the number of antennas is insufficient, avoiding the abandonment of some functions and improving the adaptability and flexibility of the communication module.
Smart Images
Figure CN224583182U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of communication technology, and in particular to a communication module and communication device. Background Technology
[0002] Currently, communication modules on the market have multiple antenna interfaces, each requiring connection to one antenna to achieve the corresponding communication function. However, some devices, due to structural limitations, have fewer antennas than the number of antenna interfaces on the communication module. When multiple antenna interfaces of the communication module are connected to the antennas of these devices, some antenna interfaces are unconnected, rendering some communication functions unusable. For example, a communication module may have a diversity antenna interface and a GNSS (Global Navigation Satellite System) antenna interface. Both the diversity and GNSS antenna interfaces require connections to two separate antennas to achieve diversity communication and GNSS positioning functions. However, some devices may only have one antenna, resulting in only one antenna interface (diversity or GNSS) being connected, leaving the other unconnected. This means only one function (diversity communication or GNSS positioning) can be implemented, while the other function must be discarded. Utility Model Content
[0003] To address the aforementioned technical problems, this application provides a communication module and a communication device.
[0004] This application provides a communication module, comprising a first antenna interface, a second antenna interface, a first radio frequency (RF) module, a second RF module, a switch, and a processor. The first antenna interface is used to connect to a first antenna, and the second antenna interface is used to connect to the second antenna. The second RF module is connected to the second antenna interface and is used to receive external RF signals through the second antenna and / or transmit RF signals output by the second RF module. The switch is connected between the first antenna interface and the second antenna interface and the first RF module, and is used to selectively enable the connection between one of the first antenna interface and the second antenna interface and the first RF module. The processor is used to control the switch to enable the connection between the first RF module and the second antenna interface when the first antenna interface is not connected to the first antenna and the second antenna interface is connected to the second antenna, so that the first RF module receives external RF signals through the second antenna and / or transmits RF signals output by the first RF module.
[0005] The communication module provided in this application, when the first antenna interface is not connected to the first antenna and the second antenna interface is connected to the second antenna, enables the first RF module to receive and / or transmit RF signals via the second antenna by establishing a connection between the first RF module and the second antenna interface. Furthermore, since the second RF module is connected to the second antenna interface, it can also receive and / or transmit RF signals via the second antenna. Therefore, when the first antenna interface is not connected to the first antenna and the second antenna interface is connected to the second antenna (i.e., only the second antenna interface is connected), the communication functions of both the first and second RF modules can be used normally, avoiding the situation where some communication functions are sacrificed.
[0006] A second aspect of this application provides a communication device, which includes the communication module provided in the first aspect.
[0007] The communication device provided in this application includes the same technical features as the communication module provided in the first aspect, and therefore can achieve the same or corresponding beneficial effects as the communication module in the first aspect, which will not be repeated here. Attached Figure Description
[0008] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0009] Figure 1 This is a schematic diagram of the structure of the communication module in some embodiments of this application.
[0010] Figure 2 This is a schematic diagram of the structure of the communication module in some other embodiments of this application.
[0011] Figure 3 This is a schematic diagram of the structure of the communication module in some embodiments of this application.
[0012] Figure 4 This is a schematic diagram of the structure of the communication module in some embodiments of this application.
[0013] Figure 5 This is a schematic diagram of the structure of a communication device in some embodiments of this application. Detailed Implementation
[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0015] In the description of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth," etc., are used to distinguish different objects, not to describe a specific order. The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, "a plurality of" means two or more, and "multiple types" means two or more.
[0016] In the description of this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal connection of two components; it can be a communication connection; or it can be an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0017] It should be noted that the illustrations provided in the embodiments of this application are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0018] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the communication module 100 in some embodiments of this application. For example... Figure 1As shown, the communication module 100 includes a first antenna interface 10, a second antenna interface 20, a first radio frequency (RF) module 30, a second RF module 40, a switching switch SW, and a processor 60. The first antenna interface 10 is used to connect to a first antenna, and the second antenna interface 20 is used to connect to the second antenna. The second RF module 40 is connected to the second antenna interface 20, and the second RF module 40 is used to receive external RF signals through the second antenna and / or transmit RF signals output by the second RF module 40. The switching switch SW is connected between the first antenna interface 10 and the second antenna interface 20 and the first RF module 30, and the switching switch SW is used to selectively enable the connection between one of the first antenna interface 10 and the second antenna interface 20 and the first RF module 30. The processor 60 is used to control the switching switch SW to connect the first radio frequency module 30 and the second antenna interface 20 when the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna, so that the first radio frequency module 30 receives external radio frequency signals through the second antenna and / or transmits the radio frequency signals output by the first radio frequency module 30.
[0019] The communication module 100 provided in this application embodiment, when the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna, enables the first radio frequency module 30 to receive and / or transmit radio frequency signals through the second antenna by establishing a connection between the first radio frequency module 30 and the second antenna interface 20. Furthermore, since the second radio frequency module 40 is connected to the second antenna interface 20, the second radio frequency module 40 can also receive and / or transmit radio frequency signals through the second antenna. Therefore, when the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna (i.e., only the second antenna interface 20 is connected to the antenna), the communication functions of both the first radio frequency module 30 and the second radio frequency module 40 can be used normally, avoiding the situation where some communication functions are abandoned.
[0020] Specifically, when the switching switch SW connects the first RF module 30 and the second antenna interface 20 (i.e., both the first RF module 30 and the second RF module 40 are connected to the second antenna interface 20), the first RF module 30 can receive only external RF signals through the second antenna; or, transmit only the RF signals output by the first RF module 30 through the second antenna; or, simultaneously or time-divisionally receive external RF signals and transmit the RF signals output by the first RF module 30 through the second antenna. Similarly, the second RF module 40 can receive only external RF signals through the second antenna; or, transmit only the RF signals output by the second RF module 40 through the second antenna; or, simultaneously or time-divisionally receive external RF signals and transmit the RF signals output by the second RF module 40 through the second antenna.
[0021] The radio frequency (RF) signal transmission and reception processes of the first RF module 30 and the second RF module 40 can be synchronous or asynchronous. For example, when the first RF module 30 receives RF signals, the second RF module 40 can receive RF signals synchronously or asynchronously, and can also transmit RF signals synchronously or asynchronously; when the first RF module 30 transmits RF signals, the second RF module 40 can receive or transmit RF signals synchronously, and can also transmit RF signals synchronously or asynchronously.
[0022] The first antenna may include a first radiator and a first connection interface connected to each other, the first connection interface being used to connect to the first antenna interface. The second antenna may include a second radiator and a second connection interface connected to each other, the second connection interface being used to connect to the second antenna interface.
[0023] The first antenna interface, the first connection interface, the second connection interface, and the second antenna interface can be soldered onboard interfaces, pluggable RF socket interfaces, or other types of antenna interfaces.
[0024] The processor 60 may be a CPU (Central Processing Unit), DSP (Digital Signal Processor), MCU (Micro Controller Unit), or other processing chips.
[0025] The first antenna and the second antenna may be the same or different.
[0026] In some embodiments, the processor 60 is further configured to control the switching switch SW to connect the first radio frequency module 30 and the first antenna interface 10 when the first antenna interface 10 is connected to the first antenna, so that the first radio frequency module 30 can receive external radio frequency signals and / or transmit the radio frequency signals output by the first radio frequency module 30 through the first antenna. Specifically, the first radio frequency module 30 may receive only external radio frequency signals through the first antenna; or transmit only the radio frequency signals output by the first radio frequency module 30 through the first antenna; or simultaneously or time-divisionally receive external radio frequency signals and transmit the radio frequency signals output by the first radio frequency module 30 through the first antenna.
[0027] Therefore, when both the first antenna interface 10 and the second antenna interface 20 are connected to antennas, the communication functions corresponding to the first radio frequency module 30 and the second radio frequency module 40 can also be used normally. Since the communication functions corresponding to the first radio frequency module 30 and the second radio frequency module 40 can be used normally in both cases where the first antenna interface 10 is not connected to an antenna and when it is connected to an antenna, the communication module 100 is compatible with devices whose number of antennas is less than or equal to the number of antenna interfaces of the communication module 100.
[0028] Specifically, when the switching switch SW connects the second antenna interface 20 and the first radio frequency module 30, it disconnects the first antenna interface 10 and the first radio frequency module 30. Conversely, when the switching switch SW connects the first antenna interface 10 and the first radio frequency module 30, it disconnects the second antenna interface 20 and the first radio frequency module 30.
[0029] In some embodiments, such as Figure 1 As shown, the communication module 100 further includes a detection module 70, which is connected to the first antenna interface 10 and the processor 60. The detection module 70 is used to output a first detection signal to the processor 60 when the first antenna interface 10 is not connected to the first antenna, and to output a second detection signal to the processor 60 when the first antenna interface 10 is connected to the first antenna. The processor 60 is used to control the switching switch SW to connect the first radio frequency module 30 and the second antenna interface 20 when it is determined based on the first detection signal that the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna. The processor 60 is also used to control the switching switch SW to connect the first radio frequency module 30 and the first antenna interface 10 when it is determined based on the second detection signal that the first antenna interface 10 is connected to the first antenna.
[0030] The detection module 70 detects the antenna connection status of the first antenna interface 10, and the processor 60 dynamically adjusts the transmission path of the radio frequency signal to ensure that the communication functions of the first radio frequency module 30 and the second radio frequency module 40 can be realized in both cases where the antenna of the first antenna interface 10 is in place and not in place, thereby improving the adaptability of the communication module 100.
[0031] In some embodiments, the first detection signal is one of a high-level signal and a low-level signal, and the second detection signal is the other of a high-level signal and a low-level signal. For example, the detection module 70 is connected to a high level through a first pull-up resistor, and the detection module 70 is connected to the processor 60 and the first antenna interface 10, with the first antenna grounded through a first inductor. When the first antenna interface 10 is not connected to the first antenna, the processor 60, the detection module 70, and the first pull-up resistor form a complete circuit loop, and the detection module 70 outputs a high-level signal to the processor 60, i.e., the first detection signal is the high-level signal. When the processor 60 receives the high-level signal sent by the detection module 70, it determines that the first antenna interface 10 is not connected to the first antenna. When the first antenna interface 10 is connected to the first antenna, the detection module 70 is grounded through the first inductor and outputs a low-level signal to the processor 60, i.e., the second detection signal is the low-level signal. When the processor 60 receives the low-level signal sent by the detection module 70, it determines that the first antenna interface 10 is connected to the first antenna.
[0032] In other embodiments, the first detection signal includes a first voltage and a first current, and the second detection signal includes a second voltage and a second current. The detection module 70 includes a first impedance detection circuit connected to the first antenna interface 10 and the processor 60. When the first antenna interface 10 is not connected to the first antenna, the first impedance detection circuit samples the first voltage and the first current and sends them to the processor 60. The first detection signal includes the first voltage and the first current. When the processor 60 receives the first voltage and the first current, it calculates a first impedance based on the first voltage and the first current. If the first impedance deviates from a preset impedance range, it determines that the first antenna interface 10 is not connected to the first antenna. When the first antenna interface 10 is connected to the first antenna, the first impedance detection circuit samples a second voltage and a second current and sends them to the processor 60. The second detection signal includes the second voltage and the second current. When the processor 60 receives the second voltage and the second current, it calculates a second impedance based on the second voltage and the second current. If the second impedance is within the preset impedance range, it determines that the first antenna interface 10 is connected to the first antenna. When the antenna interface is connected to the antenna, the impedance at the antenna interface matches the input impedance of the antenna. If the antenna interface is not connected to the antenna, the impedance at the antenna interface will change significantly. Therefore, by detecting the impedance at the antenna interface, it can be determined whether the antenna interface is connected to the antenna.
[0033] In some embodiments, the communication module 100 further includes a detection circuit (not shown), which is connected to the second antenna interface 20 and the processor 60. The detection circuit is configured to output a third detection signal to the processor 60 when the second antenna interface 20 is not connected to the second antenna, and to output a fourth detection signal to the processor 60 when the second antenna interface 20 is connected to the second antenna. The processor 60 is configured to determine, based on the third detection signal, that the second antenna interface 20 is not connected to the second antenna, and to determine, based on the fourth detection signal, that the second antenna interface 20 is connected to the second antenna.
[0034] In some embodiments, the third detection signal is one of a high-level signal and a low-level signal, and the second detection signal is the other of a high-level signal and a low-level signal. For example, the detection circuit is connected to a high level through a second pull-up resistor, and the detection circuit is connected to the processor 60 and the second antenna interface 20, with the second antenna grounded through a second inductor. When the second antenna interface 20 is not connected to the second antenna, the processor 60, the detection circuit, and the second pull-up resistor form a complete circuit loop, and the detection circuit outputs a high-level signal to the processor 60, i.e., the third detection signal is the high-level signal. When the processor 60 receives the high-level signal sent by the detection circuit, it determines that the second antenna interface 20 is not connected to the second antenna. When the second antenna interface 20 is connected to the second antenna, the detection circuit is grounded through the second inductor and outputs a low-level signal to the processor 60, i.e., the fourth detection signal is the low-level signal. When the processor 60 receives the low-level signal sent by the detection circuit, it determines that the second antenna interface 20 is connected to the second antenna.
[0035] In other embodiments, the third detection signal includes a third voltage and a third current, and the fourth detection signal includes a fourth voltage and a fourth current. The detection circuit includes a second impedance detection circuit, which is connected to the second antenna interface 20 and the processor 60. The processor 60 determines the antenna connection state of the second antenna interface 20 based on the detection signal output by the second impedance detection circuit. The determination of the antenna connection state of the first antenna interface 10 based on the detection signal output by the first impedance detection circuit, as described above, will not be repeated here.
[0036] In some other embodiments, the third detection signal includes a first incident power and a first reflected power, and the fourth detection signal includes a second incident power and a second reflected power. The detection circuit includes a power detection circuit for detecting the incident power and the reflected power. When the second antenna interface 20 is not connected to the second antenna, the power detection circuit sends the detected first incident power and first reflected power to the processor 60. The processor 60 calculates a first reflection coefficient based on the received first incident power and first reflected power, and determines that the second antenna interface 20 is not connected to the second antenna when the calculated first reflection coefficient deviates from a preset reflection coefficient range. When the second antenna interface 20 is connected to the second antenna, the power detection circuit sends the detected second incident power and second reflected power to the processor 60. The processor 60 calculates a second reflection coefficient based on the received second incident power and second reflected power, and determines that the second antenna interface 20 is connected to the second antenna when the calculated second reflection coefficient is within a preset reflection coefficient range. When the antenna interface is not connected to the antenna, the radio frequency signal will be reflected at the antenna interface, resulting in an increase in the reflection coefficient. By calculating the reflection coefficient, it can be determined whether the antenna interface is connected to the antenna. This detection method can also be applied to the aforementioned detection of the antenna connection status of the first antenna interface 10.
[0037] In some other embodiments, the detection circuit can be used to acquire RSSI (Received Signal Strength Indicator) values or SNR (Signal-to-Noise Ratio) values. The processor 60 is used to determine that the second antenna interface 20 is not connected to the second antenna when the acquired RSSI or SNR value is lower than the corresponding preset threshold, and to determine that the second antenna interface 20 is connected to the second antenna when the RSSI or SNR value is higher than the corresponding preset threshold.
[0038] In some other embodiments, the detection circuit may include a software protocol interaction detection circuit, which initiates network registration to obtain a registration result and sends the registration result to the processor 60. The processor 60 determines whether the second antenna interface 20 is connected to the second antenna based on the registration result. For example, if registration fails or times out, it is determined that the second antenna interface 20 is not connected to the second antenna; otherwise, it is determined that the second antenna interface 20 is connected to the second antenna. This detection method can also be applied to the aforementioned detection of the antenna connection status of the first antenna interface 10.
[0039] In some embodiments, such as Figure 1As shown, the communication module 100 further includes a radio frequency front-end module 80. The radio frequency front-end module 80 is connected between the second radio frequency module 40 and the first radio frequency module 30 and the second antenna interface 20. When the switching switch SW connects the first radio frequency module 30 and the second antenna interface 20, the radio frequency front-end module 80 is used to extract the radio frequency signal received through the second antenna to obtain a first radio frequency signal and transmit the first radio frequency signal to the first radio frequency module 30, and / or transmit the second radio frequency signal output by the first radio frequency module 30 to the second antenna to transmit the second radio frequency signal through the second antenna. The radio frequency front-end module 80 is also used to extract the radio frequency signal received through the second antenna to obtain a third radio frequency signal and transmit the third radio frequency signal to the second radio frequency module 40, and / or transmit the fourth radio frequency signal output by the second radio frequency module 40 to the second antenna to transmit the fourth radio frequency signal through the second antenna.
[0040] Specifically, the RF front-end module 80 can extract signals of a specific frequency band from received external signals and distribute them to the corresponding RF modules, enabling the corresponding RF modules to receive signals of the corresponding frequency band and thus achieve communication within that frequency band. Furthermore, the RF front-end module 80 can transmit RF signals output from different RF modules to the second antenna interface 20 without interference, and then transmit them through the second antenna.
[0041] In some embodiments, when the RF front-end module 80 is used to extract the first RF signal and the third RF signal from the RF signal received from the second antenna, the RF front-end module 80 can be used to transmit the first RF signal and the third RF signal to the first RF module 30 and the second RF module 40 respectively in a time-division or simultaneously manner. For example, the first receiving link and the second receiving link can be turned on in a time-division manner by the switching device in the RF front-end module 80, so that the first RF signal and the third RF signal can be transmitted to the first RF module 30 and the second RF module 40 respectively through the first receiving link and the second receiving link in a time-division manner. As another example, the first receiving link and the second receiving link can be turned on simultaneously by the switching device in the RF front-end module 80, so that the first RF signal and the third RF signal can be transmitted to the first RF module 30 and the second RF module 40 simultaneously through the first receiving link and the second receiving link respectively.
[0042] In some embodiments, when the RF front-end module 80 is used to transmit the second RF signal and the fourth RF signal to the second antenna, the RF front-end module 80 can be used to transmit the second RF signal and the fourth RF signal to the second antenna in a time-division or simultaneously. For example, the first transmit link and the second transmit link can be simultaneously turned on by the switching device in the RF front-end module 80, so that the second RF signal and the fourth RF signal can be transmitted to the second antenna simultaneously through the first transmit link and the second transmit link, or the first transmit link and the second transmit link can be turned on in a time-division manner, so that the second RF signal and the fourth RF signal can be transmitted to the second antenna in a time-division manner through the first transmit link and the second transmit link.
[0043] In some embodiments, when the RF front-end module 80 is used to transmit the first RF signal to the first RF module 30 and the fourth RF signal to the second antenna, the RF front-end module 80 can be used to transmit the first RF signal to the first RF module 30 and the fourth RF signal to the second antenna in a time-division or simultaneously. For example, the first receiving link and the second transmitting link can be time-divisionally activated by the switching devices in the RF front-end module 80, so that the first RF signal and the fourth RF signal are transmitted to the first RF module 30 and the second antenna respectively through the first receiving link and the second transmitting link in a time-division manner. As another example, the first receiving link and the second transmitting link can be activated simultaneously by the switching devices in the RF front-end module 80, so that the first RF signal and the fourth RF signal are transmitted to the first RF module 30 and the second antenna respectively through the first receiving link and the second transmitting link in a simultaneous manner.
[0044] In some embodiments, when the RF front-end module 80 is used to transmit the second RF signal to the second antenna and the third RF signal to the second RF module 40, the RF front-end module 80 can be used to transmit the second RF signal to the second antenna and the third RF signal to the second RF module 40 in a time-division or simultaneously. For example, the second receiving link and the first transmitting link can be time-divisionally activated by the switching devices in the RF front-end module 80, so that the second RF signal and the third RF signal are transmitted to the second antenna and the second RF module 40 in a time-division manner through the first transmitting link and the second receiving link, respectively. As another example, the first transmitting link and the second receiving link can be simultaneously activated by the switching devices in the RF front-end module 80, so that the second RF signal and the third RF signal are transmitted to the second antenna and the second RF module 40 simultaneously through the first transmitting link and the second receiving link, respectively.
[0045] In some embodiments, the RF front-end module 80 may include one or more of filters, multiplexers, combiners, and circulators. Multiplexers include duplexers, triplets, quadplexers, etc. In some embodiments, the RF front-end module 80 may also include power amplifiers, switching devices, etc.
[0046] In some embodiments, the RF front-end module 80 can process the second RF signal and the fourth RF signal, and transmit the processed RF signal to the second antenna interface 20. The RF front-end module 80 can perform power amplification, filtering, and other processing.
[0047] In some embodiments, the first radio frequency module 30 may include a first radio frequency integrated circuit. The first radio frequency integrated circuit is configured to convert the first radio frequency signal into a first baseband modulated signal and transmit the first baseband modulated signal to the processor 60. The processor 60 is configured to convert the first baseband modulated signal into a first baseband signal, and after converting the first baseband signal into data, determine the information carried in the first radio frequency signal. And / or, the first radio frequency integrated circuit is also configured to convert the second baseband modulated signal output by the processor 60 into a second radio frequency signal and output the second radio frequency signal to a second antenna or a first antenna to transmit the second radio frequency signal via the second antenna or the first antenna.
[0048] In some embodiments, the second radio frequency module 40 may include a second radio frequency integrated circuit. The second radio frequency integrated circuit is used to convert the third radio frequency signal into a third baseband modulation signal and transmit the third baseband modulation signal to the processor 60. The processor 60 is used to convert the third baseband modulation signal into a third baseband signal, and after converting the third baseband signal into data, determine the information carried in the third radio frequency signal. And / or, the second radio frequency integrated circuit is also used to convert the fourth baseband modulation signal output by the processor 60 into a fourth radio frequency signal and output the fourth radio frequency signal to a second antenna for transmission via the second antenna.
[0049] In some embodiments, such as Figure 1 As shown, the switching switch SW is connected between the first antenna interface 10 and the radio frequency front-end module 80 and the first radio frequency module 30, so that the switching switch SW can be integrated into a switch module, which is beneficial to the modularization of the components of the communication module 100, thereby making the assembly and maintenance of the communication module 100 more convenient.
[0050] In some embodiments, such as Figure 1As shown, the switching switch SW may include a single-pole multi-throw switch. The fixed end of the single-pole multi-throw switch is fixedly connected to the first radio frequency module 30, and the throwing end of the single-pole multi-throw switch is used to selectively connect to the first antenna interface 10 or the radio frequency front-end module 80 to establish a connection between the first antenna interface 10 or the radio frequency front-end module 80 and the first radio frequency module 30.
[0051] Specifically, when the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna, the throwing end of the single-pole multi-throw switch selectively connects to the RF front-end module 80 to establish the connection between the first RF module 30 and the second antenna interface 20, and disconnects the connection between the first RF module 30 and the first antenna interface 10, enabling the first RF module 30 to receive and / or transmit RF signals through the second antenna. When the first antenna interface 10 is connected to the first antenna, the throwing end of the single-pole multi-throw switch selectively connects to the first antenna interface 10 to establish the connection between the first RF module 30 and the first antenna interface 10, and disconnects the connection between the first RF module 30 and the second antenna interface 20, enabling the first RF module 30 to receive and / or transmit RF signals through the first antenna.
[0052] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of the communication module 100 in other embodiments of this application. In some embodiments, such as Figure 2 As shown, the switching switch SW may include a first switch SW1 and a second switch SW2. The first switch SW1 is connected between the first antenna interface 10 and the first radio frequency module 30, and the second switch SW2 is connected between the second antenna interface 20 and the first radio frequency module 30.
[0053] Specifically, when the first antenna interface 10 is not connected to the first antenna and the second antenna interface 20 is connected to the second antenna, the second switch SW2 is in the ON state to connect the first RF module 30 and the second antenna interface 20, and the first switch SW1 is in the OFF state to disconnect the first RF module 30 from the first antenna interface 10. When the first antenna interface 10 is connected to the first antenna, the first switch SW1 is in the ON state to connect the first RF module 30 to the first antenna interface 10, and the second switch SW2 is in the OFF state to disconnect the first RF module 30 from the second antenna interface 20.
[0054] In some embodiments, such as Figure 2As shown, the second switch SW2 is connected between the RF front-end module 80 and the first RF module 30.
[0055] In other embodiments, the second switch SW2 is connected between the second antenna interface 20 and the RF front-end module 80. For example, please refer to [link to relevant documentation]. Figure 3 , Figure 3 This is a schematic diagram of the structure of the communication module 100 in some embodiments of this application. For example... Figure 3 As shown, the second switch SW2 is connected between the second antenna interface 20 and the radio frequency front-end module 80.
[0056] In some embodiments, the frequency bands supported by the first radio frequency module 30 include one or more of cellular communication bands, satellite positioning bands, Wi-Fi bands, and Bluetooth bands, and the frequency bands supported by the second radio frequency module 40 include one or more of cellular communication bands, satellite positioning bands, Wi-Fi bands, and Bluetooth bands. Therefore, the communication module 100 supports at least one of cellular communication, satellite positioning communication, Wi-Fi communication, and Bluetooth communication.
[0057] The frequency band supported by the first radio frequency module 30 may be the same as or different from the frequency band supported by the second radio frequency module 40.
[0058] In some embodiments, the frequency band supported by the first radio frequency module 30 includes a cellular communication frequency band, the frequency band supported by the second radio frequency module 40 includes a satellite positioning frequency band, the first antenna is a satellite positioning antenna, and the second antenna is a cellular diversity antenna.
[0059] In some embodiments, the frequency range of the frequency band supported by the second RF module 40 includes the frequency range of the frequency band supported by the first RF module 30, that is, the frequency range of the frequency band supported by the second RF module 40 is greater than or equal to the frequency range of the frequency band supported by the first RF module 30. This allows the first RF module 30 to be connected to the second antenna interface 20 when the switching switch SW is activated, without needing to adjust the matching circuit corresponding to the second antenna. Consequently, when both the first RF module 30 and the second RF module 40 receive and / or transmit RF signals through the second antenna, both can achieve better communication performance.
[0060] In some embodiments, the frequency bands supported by the second radio frequency module 40 include cellular communication frequency bands, with a frequency range of approximately 600MHz to 2700MHz. The frequency bands supported by the first radio frequency module 30 include satellite positioning frequency bands, which include one or more of the following: GPS L1 band, GPS L5 band, and BeiDou satellite positioning band. The frequency range of the GPS L1 band is approximately 1574.397MHz to 1576.443MHz, the frequency range of the GPS L5 band is approximately 1175.427MHz to 1177.473MHz, and the BeiDou satellite positioning frequency band is, for example, the BeiDou B1 band and the BeiDou B2 band. The frequency range of the B1 band is approximately 1559.052MHz to 1591.789MHz, and the frequency range of the B2 band is approximately 1207.140MHz to 1242.390MHz.
[0061] In other embodiments, the frequency bands supported by the second radio frequency module 40 include other frequency bands, such as the WIFI 2.4G band, the WIFI 5G band, the Bluetooth band, etc., and the frequency bands supported by the first radio frequency module 30 include other frequency bands, such as the WIFI 2.4G band, the WIFI 5G band, the Bluetooth band, etc.
[0062] In some other embodiments, the frequency range of the frequency band supported by the second radio frequency module 40 is less than or equal to the frequency range of the frequency band supported by the first radio frequency module 30. For example, the frequency band supported by the second radio frequency module 40 may include a satellite positioning frequency band, and the frequency band supported by the first radio frequency module 30 may include a cellular communication frequency band.
[0063] The first antenna interface 10 includes one or more, the first radio frequency module 30 includes one or more, the switching switch SW includes one or more, the second antenna interface 20 includes one or more, and the second radio frequency module 40 includes one or more. The first antenna includes one or more, and the second antenna includes one or more.
[0064] In some embodiments, the first antenna includes at least two, the first antenna interface 10 includes at least two, and the first radio frequency module 30 includes at least two. The at least two first radio frequency modules 30 support different or the same frequency bands. Each first antenna interface 10 corresponds to one first radio frequency module 30. The second antenna includes one, the second antenna interface 20 includes one, and the second radio frequency module 40 includes one. A switching switch SW is connected between the at least two first antenna interfaces 10 and the at least two second antenna interfaces 20 and the at least two first radio frequency modules 30. The switching switch SW is used to connect one or more of the at least two first radio frequency modules 30 to the second antenna interface 20, or to connect one or more of the at least two first radio frequency modules 30 to the corresponding first antenna interface 10. The processor 60 is configured to, when at least some of the at least two first antenna interfaces 10 are not connected to the first antenna, and the second antenna interface 20 is connected to the second antenna, control the switching switch SW to connect the first radio frequency module 30 corresponding to the first antenna interface 10 that is not connected to the first antenna and the second antenna interface 20, so that the first radio frequency module 30 corresponding to the first antenna interface 10 that is not connected to the first antenna receives and / or transmits radio frequency signals through the second antenna. The processor 60 is also configured to, when at least some of the at least two first antenna interfaces 10 are connected to the first antenna, control the switching switch SW to connect the first radio frequency module 30 corresponding to the first antenna interface 10 connected to the first antenna and the first antenna interface 10, so that the first radio frequency module 30 corresponding to the first antenna interface 10 connected to the first antenna receives and / or transmits radio frequency signals through the first antenna.
[0065] In other embodiments, the first antenna includes at least two, the first antenna interface 10 includes at least two, the first radio frequency module 30 includes at least two, the at least two first radio frequency modules 30 support different or the same frequency bands, the switching switch SW includes at least two, the second antenna includes at least two, the second antenna interface 20 includes at least two, and the second radio frequency module 40 includes at least two, the at least two second radio frequency modules 40 support different or the same frequency bands. Each switching switch SW is connected between a first antenna interface 10 and a second antenna interface 20 and a first radio frequency module 30. Each switching switch SW is used to connect the first radio frequency module 30 connected to the switching switch SW and the first antenna interface 10 connected to the switching switch SW, or to connect the first radio frequency module 30 connected to the switching switch SW and the second antenna interface 20 connected to the switching switch SW. The first antenna interface 10, the second antenna interface 20, and the first radio frequency module 30 connected to each switching switch SW are different.
[0066] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of the communication module 100 in some embodiments of this application. In some embodiments, such as Figure 4 As shown, the communication module 100 further includes a third antenna interface 90 and a third radio frequency module 95 interconnected with each other. The third radio frequency module 95 is connected to the processor 60. The third antenna interface 90 is used to connect to a third antenna. The third radio frequency module 95 is used to receive external radio frequency signals and / or transmit the radio frequency signals output by the third radio frequency module 95 through the third antenna. Specifically, the third radio frequency module 95 may receive only external radio frequency signals through the third antenna; or transmit only the radio frequency signals output by the third radio frequency module 95 through the third antenna; or simultaneously or time-divisionally receive external radio frequency signals and transmit the radio frequency signals output by the third radio frequency module 95 through the third antenna.
[0067] By configuring the third radio frequency module 95 and the third antenna interface 90, the wireless communication function of the communication module 100 can be expanded.
[0068] In some embodiments, the frequency bands supported by the third radio frequency module 95 include one or more of the following: cellular communication bands, satellite positioning bands, WIFI bands, and Bluetooth bands.
[0069] In some embodiments, the frequency band supported by the third radio frequency module 95 includes cellular communication frequency bands, and the third antenna is a cellular master antenna.
[0070] In some embodiments, the communication module 100 further includes a radio frequency (RF) front-end module (not shown). The third RF module 95 may include a third RF circuit. The RF front-end module is connected between the third antenna interface 90 and the third RF circuit. The RF front-end module amplifies and filters the RF signal received through the third antenna and sends the processed RF signal to the third RF circuit. The third RF circuit converts the RF signal sent by the RF front-end module into a fifth baseband modulation signal and sends the fifth baseband modulation signal to the processor 60. The processor 60 converts the fifth baseband modulation signal into a fifth baseband signal and converts the fifth baseband signal into data to determine the information carried by the RF signal received through the third antenna. Alternatively, the processor 60 sends a sixth baseband modulation signal to the third RF circuit. The third RF circuit converts the sixth baseband modulation signal into a sixth RF signal and sends the sixth RF signal to the RF front-end module. The RF front-end module amplifies and filters the sixth RF signal before sending it to the third antenna for transmission. The radio frequency front-end module may include one or more of a power amplifier, a filter, and a duplexer.
[0071] In some embodiments, the first antenna is a satellite positioning antenna, the second antenna is a cellular diversity antenna, and the third antenna is a cellular master antenna.
[0072] Wherein, when the communication module 100 includes the third antenna interface 90 and the third radio frequency module 95, the structure of the switching switch SW in the communication module 100 is not limited to Figure 4 The single-pole multi-throw switch shown can also be Figure 2 The structure is shown. Additionally, the switching switch SW can be connected between the first antenna interface 10, the RF front-end module 80, and the first RF module 30 (e.g., Figure 4 (As shown), it may also include the aforementioned first switch SW1 and second switch SW2, with the first switch SW1 connected between the first antenna interface 10 and the first radio frequency module 30, and the second switch SW2 connected between the second antenna interface 20 and the radio frequency front-end module 80 (as shown). Figure 3 (As shown).
[0073] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a communication device 200 in some embodiments of this application. In some embodiments, such as Figure 5 As shown, the communication device 200 includes the communication module 100 described in any of the foregoing embodiments.
[0074] The communication device 200 can be any device with wireless communication capabilities, including but not limited to vehicle-mounted devices, industrial IoT devices, consumer electronics devices, agricultural and environmental devices, emergency and safety devices, medical devices, positioning devices, etc.
[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0076] The above are the implementation methods of the embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the embodiments of this application, and these improvements and modifications are also considered to be within the protection scope of this application.
Claims
1. A communication module, characterized in that, The communication module includes: The first antenna interface is used to connect to the first antenna; The second antenna interface is used to connect to the second antenna. First radio frequency module; The second radio frequency module is connected to the second antenna interface. The second radio frequency module is used to receive external radio frequency signals through the second antenna and / or transmit the radio frequency signals output by the second radio frequency module. A switching switch is connected between the first antenna interface and the second antenna interface and the first radio frequency module. The switching switch is used to selectively enable the connection between one of the first antenna interface and the second antenna interface and the first radio frequency module. The processor is configured to control the switching switch to connect the first radio frequency module and the second antenna interface when the first antenna interface is not connected to the first antenna and the second antenna interface is connected to the second antenna, so that the first radio frequency module receives external radio frequency signals through the second antenna and / or transmits the radio frequency signals output by the first radio frequency module.
2. The communication module of claim 1, wherein, The processor is further configured to control the switching switch to connect the first radio frequency module and the first antenna interface when the first antenna interface is connected to the first antenna, so that the first radio frequency module receives external radio frequency signals through the first antenna and / or transmits the radio frequency signals output by the first radio frequency module.
3. The communication module of claim 2, wherein, The communication module further includes a detection module connected to the first antenna interface and the processor. The detection module is used to output a first detection signal to the processor when the first antenna interface is not connected to the first antenna and to output a second detection signal to the processor when the first antenna interface is connected to the first antenna. The processor is used to control the switching switch to connect the first radio frequency module and the second antenna interface when it is determined based on the first detection signal that the first antenna interface is not connected to the first antenna and the second antenna interface is connected to the second antenna. The processor is also used to control the switching switch to connect the first radio frequency module and the first antenna interface when it is determined based on the second detection signal that the first antenna interface is connected to the first antenna.
4. The communication module according to any one of claims 1 to 3, characterized in that, The communication module further includes a radio frequency front-end module connected between the second radio frequency module and the interface between the first radio frequency module and the second antenna. The radio frequency front-end module is used to extract the radio frequency signal received through the second antenna to obtain a first radio frequency signal and transmit the first radio frequency signal to the first radio frequency module when the switching switch connects the connection between the first radio frequency module and the second antenna interface, and / or transmit the second radio frequency signal output by the first radio frequency module to the second antenna to transmit the second radio frequency signal through the second antenna. The radio frequency front-end module is also used to extract the radio frequency signal received through the second antenna to obtain a third radio frequency signal and transmit the third radio frequency signal to the second radio frequency module, and / or transmit the fourth radio frequency signal output by the second radio frequency module to the second antenna to transmit the fourth radio frequency signal through the second antenna.
5. The communication module of claim 4, wherein, The switching switch is connected between the first antenna interface and the RF front-end module and the first RF module; or, the switching switch includes a first switch and a second switch, the first switch being connected between the first antenna interface and the first RF module, and the second switch being connected between the second antenna interface and the RF front-end module.
6. The communication module of any of claims 1-3, wherein, The frequency range of the frequency band supported by the second radio frequency module includes the frequency range of the frequency band supported by the first radio frequency module.
7. The communication module of any of claims 1-3, wherein, The first radio frequency module supports one or more of the following frequency bands: cellular communication band, satellite positioning band, WIFI band, and Bluetooth band. The second radio frequency module supports one or more of the following frequency bands: cellular communication band, satellite positioning band, WIFI band, and Bluetooth band.
8. The communication module of any of claims 1-3, wherein, The communication module also includes a third antenna interface and a third radio frequency module that are interconnected. The third radio frequency module is connected to the processor. The third antenna interface is used to connect to a third antenna. The third radio frequency module is used to receive external radio frequency signals through the third antenna and / or to transmit the radio frequency signals output by the third radio frequency module.
9. The communication module of claim 8, wherein, The frequency bands supported by the third radio frequency module include one or more of the following: cellular communication band, satellite positioning band, WIFI band, and Bluetooth band.
10. A communication device, characterized by The communication device includes the communication module as described in any one of claims 1-9.