Communication devices and electronic equipment

Abstract

The present application provides a communication device and an electronic device, which can reduce the layout area of ​​the communication device. Each receiving frequency band supported by the electronic device shares the same receiving channel, one end of each filter in the filtering module is located in the receiving channel, and the other end is grounded. The current receiving frequency in the radio frequency signal received by the receiving antenna is determined by the radio frequency integrated circuit. The control unit determines the target filter in the filtering module according to the current receiving frequency and the pre-saved target correspondence relationship to control the switch module to turn on the target filter. The target correspondence relationship is the correspondence relationship between the multiple receiving frequency bands supported by the electronic device and the transmitting frequency band corresponding to the receiving frequency band, the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters. The turned-on target filter suppresses the transmitting sub-band corresponding to the receiving sub-band where the current receiving frequency is located, so as to reduce the blocking of the transmitting signal on the receiving signal in the receiving channel.

Description

[0001] This application is a divisional application. The application number of the original application is 202311083340.0, and the original application date is August 28, 2023. The entire content of the original application is incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication device and electronic equipment. Background Art

[0003] An electronic device can achieve wireless communication with other devices through a communication device provided therein. Therefore, the communication device plays a very important role in the communication process of the electronic device.

[0004] The communication device includes an antenna module and a communication circuit, and the antenna module is coupled to the communication circuit to realize the transmission and reception of signals. For example, in the reception (RX) process, the electronic device can convert the electromagnetic waves in the space into current signals with different characteristics through the antenna module, and analyze the current signal through the communication circuit, so that the electronic device can obtain the information carried by the electromagnetic wave. In the transmission (TX) process, the electronic device can also feed the antenna module with an electrical signal loaded with the information to be sent through the communication circuit, so that the antenna module can convert the electrical signal into an electromagnetic wave of the corresponding frequency and transmit it. When other devices receive the electromagnetic wave, they can receive the electromagnetic wave through the antenna module provided therein, thereby realizing wireless transmission of information.

[0005] However, existing communication circuits occupy a large layout area, which is not conducive to the arrangement of other structures in the electronic device. Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a communication device and an electronic device, which can reduce the layout area of ​​the communication device.

[0007] In a first aspect, the present application provides a communication device, which is applied to an electronic device, the communication device comprising: an antenna module and a communication circuit electrically connected to the antenna module; the antenna module comprising at least: a receiving antenna; the communication circuit comprising at least: a radio frequency front-end receiving unit, a radio frequency integrated circuit, and a control unit; the radio frequency front-end receiving unit comprising at least: a switch module and a filter module, the filter module comprising a plurality of filters; first ends of the receiving antenna, the radio frequency integrated circuit, and the switch module are coupled to a node; a second end of the switch module is electrically connected to the first ends of the plurality of filters, respectively; second ends of the plurality of filters are grounded; and the control unit is electrically connected to the radio frequency integrated circuit and a control end of the switch module, respectively; the radio frequency integrated circuit is configured to determine a current receiving frequency in a radio frequency signal received by the receiving antenna; the control unit is configured to determine a target filter in the filter module based on the current receiving frequency and a pre-stored target correspondence relationship, so as to control the switch module to turn on the target filter, wherein the target correspondence relationship refers to a correspondence relationship between multiple receiving frequency bands supported by the electronic device and a transmitting frequency band corresponding to the receiving frequency band, a plurality of receiving sub-bands divided into each receiving frequency band, a plurality of transmitting sub-bands divided into each transmitting frequency band, and a plurality of filters; the turned-on target filter is configured to suppress the transmitting sub-band corresponding to the receiving sub-band where the current receiving frequency is located.

[0008] That is to say, the multiple receiving frequency bands supported by the electronic device can share the receiving channel formed between the radio frequency integrated circuit and the receiving antenna, and the conduction of the corresponding filter is controlled by the control unit to reduce the blocking of the receiving signal in the receiving channel by the transmitting signal. Compared with each receiving frequency band corresponding to a receiving channel, the solution of the present application can reduce the area of ​​the printed circuit board occupied by the communication circuit.

[0009] Exemplarily, the multiple frequency bands supported by the electronic device may include band1 (i.e., B1), band3 (i.e., B3) and band66 (i.e., B66), each frequency band including a receiving frequency band and a transmitting frequency band corresponding to the receiving frequency band, the receiving frequency band corresponding to band1 is 2110MHz-2170 MHz, and the transmitting frequency band is 1920MHz-1980 MHz, the receiving frequency band corresponding to band3 is 1805MHz-1880 MHz, and the transmitting frequency band is 1710MHz-1785 MHz, the receiving frequency band corresponding to band66 is 2110MHz-2200 MHz, and the transmitting frequency band is 1710MHz-1780 MHz.

[0010] For example, the receiving frequency band 1805MHz-1880MHz corresponding to band3 is split into three segments: 1805-1835MHz, 1835-1855MHz and 1855-1880MHz, and the transmitting frequency band 1710MHz-1785MHz is split into three segments: 1710-1740MHz, 1740-1760MHz and 1760-1785MHz. Accordingly, band3 requires three corresponding filters, such as the first filter, the second filter and the third filter. The corresponding relationship between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band and the multiple filters can be, for example: the receiving sub-band 1805-1835MHz and the transmitting sub-band 1710-1740MHz split from band3 correspond to the first filter, the receiving sub-band 1835-1855MHz and the transmitting sub-band 1740-1760MHz split from band3 correspond to the second filter, the receiving sub-band 1855-1880MHz and the transmitting sub-band 1760-1785MHz split from band3 correspond to the third filter. In this way, when the RF integrated circuit and the receiver are connected When the frequency band received by the receiving channel formed between the receiving antennas is, for example, within the 1805-1835 MHz frequency band, the first filter can suppress the transmitted signals in the 1710-1740 MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 1835-1855 MHz frequency band, the second filter can suppress the transmitted signals in the 1740-1760 MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 1855-1880 MHz frequency band, the third filter can suppress the transmitted signals in the 1760-1785 MHz frequency band.

[0011] For example, when the electronic device is a mobile phone, the control unit is, for example, a system-on-chip described below. When the electronic device is another type of electronic device, the control unit may also be another chip.

[0012] Exemplarily, when the electronic device is an electronic device that supports multi-band MIMO receiving channels, the receiving antenna may be a MIMO main receiving antenna or a MIMO diversity receiving antenna.

[0013] Exemplarily, the number of receiving antennas may be one or more.

[0014] According to a first aspect, the multiple receiving frequency bands and transmitting frequency bands corresponding to the receiving frequency bands supported by the electronic device include a first receiving frequency band and a first transmitting frequency band corresponding to the first receiving frequency band, and a second receiving frequency band and a second transmitting frequency band corresponding to the second receiving frequency band. When the first transmitting frequency band and the second transmitting frequency band at least partially overlap, the overlapping portion of the first transmitting frequency band and the second transmitting frequency band shares at least one filter.

[0015] This arrangement can reduce the number of filters in the filter module, further reduce the area of ​​the printed circuit board occupied by the communication circuit, and reduce the cost of the communication circuit.

[0016] For example, the transmission frequency band corresponding to band3 is 1710MHz-1785MHz, the transmission frequency band corresponding to band66 is 1710MHz-1780MHz, the transmission frequency band corresponding to band66 is located within the transmission frequency band corresponding to band3, the receiving frequency band 1805MHz-1880MHz corresponding to band3 is split into three segments: 1805-1835MHz, 1835-1855MHz and 1855-1880MHz, the transmission frequency band 1710MHz-1785MHz is split into three segments: 1710-1740MHz, 1740-1760MHz and 1760-1785MHz, the receiving frequency band 2110MHz-2200MHz corresponding to band66 is split into three segments: 2110MHz-2140MHz, 2140MHz-2160MHz and 2160MHz-2200MHz, the transmission frequency band 1710MHz-1780 Band 3 and band 66 can share three filters, for example, a first filter, a second filter, and a third filter. The first filter suppresses transmitted signals in the 1710-1740 MHz band, the second filter suppresses transmitted signals in the 1740-1760 MHz band, and the third filter suppresses transmitted signals in the 1760-1785 MHz band. In this way, when the receiving band3 frequency is 1805-1835MHz or the receiving band66 frequency is 2110-2140MHz, the first filter can be turned on; when the receiving band3 frequency is 1835-1855MHz or the receiving band66 frequency is 2140-2160MHz, the second filter can be turned on; when the receiving band3 frequency is 1855-1880MHz or the receiving band66 frequency is 2160-2200MHz, the third filter can be turned on. There is no need to set six filters for band3 and band66.

[0017] According to the first aspect, or any implementation of the first aspect above, the receiving antenna includes a MIMO main set receiving antenna, the MIMO main set receiving antenna, the MIMO main set receiving end of the radio frequency integrated circuit and the first end of the switch module are coupled to the first node, and the radio frequency front-end receiving unit includes a MIMO main set radio frequency front-end receiving unit, and the MIMO main set radio frequency front-end receiving unit includes at least: the above-mentioned switch module and the above-mentioned filtering module.

[0018] In other words, this solution is applicable to electronic devices that support multi-band MIMO receive channels, wherein the RF front end in the MIMO main set receive channel corresponding to the MIMO main set receive antenna is the above-mentioned RF front end receiving unit. Of course, this solution is not limited to electronic devices that support multi-band MIMO receive channels.

[0019] According to the first aspect, or any implementation of the first aspect above, the receiving antenna includes a MIMO diversity receiving antenna, the MIMO diversity receiving antenna, the MIMO diversity receiving end of the radio frequency integrated circuit, and the first end of the switch module are coupled to the second node, and the radio frequency front-end receiving unit includes a MIMO diversity radio frequency front-end receiving unit, and the MIMO diversity radio frequency front-end receiving unit includes at least: the above-mentioned switch module and the above-mentioned filtering module.

[0020] That is to say, this solution is applicable to electronic devices that support multi-band MIMO receiving channels, wherein the RF front end in the MIMO diversity receiving channel corresponding to the MIMO diversity receiving antenna is the above-mentioned RF front end receiving unit; or, the RF front end in the MIMO main set receiving channel corresponding to the MIMO main set receiving antenna is the above-mentioned RF front end receiving unit, and the RF front end in the MIMO diversity receiving channel corresponding to the MIMO diversity receiving antenna is the above-mentioned RF front end receiving unit.

[0021] According to the first aspect, or any implementation of the first aspect above, the filter includes a first capacitor, a second capacitor, a first inductor, and a second inductor; the first end of the first capacitor and the first end of the second inductor are both electrically connected to the second end of the switch module, the second end of the first capacitor is electrically connected to the first end of the first inductor, the second end of the second inductor is electrically connected to the first end of the second capacitor, and the second end of the first inductor and the second end of the second capacitor are both grounded. The filter has a simple structure.

[0022] Exemplarily, different filters have different parameter values ​​of at least one of the first capacitor, the second capacitor, the first inductor, and the second inductor to suppress different transmission frequency bands.

[0023] According to the first aspect, or any implementation of the first aspect above, the filter includes a first capacitor, a second capacitor, a first inductor, and a second inductor; the first end of the first capacitor and the first end of the second inductor are both electrically connected to the second end of the switch module, the second end of the first capacitor is electrically connected to the first end of the first inductor, the second end of the second inductor is electrically connected to the first end of the second capacitor, and the second end of the first inductor and the second end of the second capacitor are both grounded. In addition, the filter also includes a third capacitor, a third inductor, or a third capacitor and a third inductor; when the filter also includes a third capacitor, the third capacitor is electrically connected to the second end of the switch module, the second end of the third capacitor is electrically connected to the second end of the second inductor and the first end of the second capacitor; when the filter also includes a third inductor, the first end of the third inductor is electrically connected to the second end of the second inductor and the first end of the second capacitor, and the second end of the third inductor is grounded; when the filter also includes a third capacitor and a third inductor, the third capacitor is electrically connected to the second end of the switch module, the second end of the third capacitor is electrically connected to the second end of the second inductor, the first end of the second capacitor, and the first end of the third inductor, and the second end of the third inductor is grounded.

[0024] In this way, the structure of the filter is more diversified, and different filters can be flexibly selected according to needs, and the structures of the filters can be the same or different.

[0025] Of course, the specific structure of the filter is not limited to the above content, and those skilled in the art can set it according to actual conditions.

[0026] According to the first aspect, or any implementation of the first aspect above, the communication circuit further includes a bandpass filter, and the bandpass filter is located between the node and the receiving antenna.

[0027] This configuration makes the communication device have a wider range of applications, for example, it can be applied to electronic devices that support dual-mode (such as 4G and 5G) simultaneous transmission and reception.

[0028] According to the first aspect, or any implementation of the first aspect above, the insertion loss in the receiving band of the bandpass filter is less than or equal to -1dB and greater than or equal to -3dB, and the suppression of transmission is greater than 20dB, so as to avoid signal interference and loss.

[0029] Exemplarily, the insertion loss in the receiving band of the bandpass filter is -2 dB.

[0030] According to the first aspect, or any implementation of the first aspect above, the bandpass filter includes a fourth capacitor, a fifth capacitor, a sixth capacitor, a fourth inductor, a fifth inductor, a sixth inductor, and a seventh inductor; the first end of the fourth capacitor, the first end of the fifth inductor, and the first end of the fourth inductor are electrically connected to the receiving antenna, the second end of the fourth inductor is grounded, the second end of the fourth capacitor, the second end of the fifth inductor, the first end of the sixth inductor, and the first end of the seventh inductor are all electrically connected to the first end of the fifth capacitor, the second end of the fifth capacitor is electrically connected to the first end of the sixth capacitor, the second end of the sixth inductor is grounded, and the second end of the seventh inductor and the second end of the sixth capacitor are both electrically connected to a node. The bandpass filter has a simple structure.

[0031] According to the first aspect, or any implementation manner of the first aspect above, the bandpass filter includes a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a fourth inductor, a fifth inductor, a sixth inductor, a seventh inductor and an eighth inductor; the first end of the fourth capacitor, the first end of the fifth inductor and the first end of the fourth inductor are electrically connected to the receiving antenna, the second end of the fourth inductor is grounded, the second end of the fourth capacitor, the second end of the fifth inductor and the first end of the sixth inductor are all electrically connected to the first end of the seventh inductor, the second end of the sixth inductor is electrically connected to the first end of the fifth capacitor, the second end of the fifth capacitor is grounded, the second end of the seventh inductor is electrically connected to the first end of the sixth capacitor and the first end of the seventh capacitor, the second end of the sixth capacitor is grounded, the second end of the seventh capacitor and the first end of the eighth inductor are both electrically connected to the node, and the second end of the eighth inductor is grounded.

[0032] This arrangement makes the structure of the bandpass filter more diversified, and different bandpass filters can be flexibly selected according to needs.

[0033] According to the first aspect, or any implementation manner of the above-mentioned first aspect, the above-mentioned band-pass filter includes a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a fourth inductor, a fifth inductor, a sixth inductor, a seventh inductor and an eighth inductor; the first end of the fourth capacitor, the first end of the fifth inductor and the first end of the fourth inductor are electrically connected to the receiving antenna, the second end of the fourth inductor is grounded, the second end of the fourth capacitor, the second end of the fifth inductor and the first end of the sixth inductor are all electrically connected to the first end of the seventh inductor, the second end of the sixth inductor is electrically connected to the first end of the fifth capacitor, the second end of the fifth capacitor is grounded, the second end of the seventh inductor is electrically connected to the first end of the sixth capacitor and the first end of the seventh capacitor, the second end of the sixth capacitor is grounded, the second end of the seventh capacitor and the first end of the eighth inductor are both electrically connected to the node, and the second end of the eighth inductor is grounded, the band-pass filter also includes an eighth capacitor, which is connected in parallel with the seventh inductor.

[0034] This arrangement makes the structure of the bandpass filter more diversified, and different bandpass filters can be flexibly selected according to needs.

[0035] According to the first aspect, or any implementation of the first aspect above, the RF front-end receiving unit further includes: a low noise amplifier located between the node and the RF integrated circuit, for amplifying the signal received by the receiving antenna.

[0036] According to the first aspect, or any implementation method of the first aspect above, the antenna module also includes: a main set transceiver shared antenna and a diversity transceiver shared antenna; the communication circuit also includes: an RF front-end main diversity transceiver unit, the RF front-end main diversity transceiver unit includes: an RF front-end main set transceiver subunit, an RF front-end diversity receiving subunit and a double-pole double-throw switch; the first end of the double-pole double-throw switch is electrically connected to the main set transceiver shared antenna, the second end of the double-pole double-throw switch is electrically connected to the diversity transceiver shared antenna, the third end of the double-pole double-throw switch is electrically connected to the first end of the RF front-end main set transceiver subunit, and the fourth end of the double-pole double-throw switch is electrically connected to the first end of the RF front-end diversity receiving subunit; the second end of the RF front-end main set transceiver subunit is electrically connected to the RF transmitting end of the RF integrated circuit, the third end of the RF front-end main set transceiver subunit is connected to the main set receiving end of the RF integrated circuit, and the second end of the RF front-end diversity receiving subunit is electrically connected to the diversity receiving end of the RF integrated circuit.

[0037] A transmission path may be formed among the RF front-end main transceiver subunit, the RF front-end diversity receiver subunit and the double-pole double-throw switch, and the transmission path is used to transmit the transmission sub-band mentioned above.

[0038] According to the first aspect, or any implementation of the first aspect, the switch module includes but is not limited to a single-pole multi-throw switch.

[0039] In a second aspect, the present application provides an electronic device, comprising: a communication device including the above-mentioned first aspect and any one implementation manner of the first aspect.

[0040] The second aspect and any implementation of the second aspect correspond to the first aspect and any implementation of the first aspect, respectively. The technical effects corresponding to the second aspect and any implementation of the second aspect can be referred to the technical effects corresponding to the first aspect and any implementation of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0042] Figure 2A circuit diagram of a communication device provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of a wireless communication system provided in an embodiment of the present application;

[0044] Figure 4 A circuit diagram of another communication device provided in an embodiment of the present application;

[0045] Figure 5 A circuit diagram of another communication device provided in an embodiment of the present application;

[0046] Figure 6 A circuit diagram of another communication device provided in an embodiment of the present application;

[0047] Figure 7 A circuit diagram of another communication device provided in an embodiment of the present application;

[0048] Figure 8 A circuit diagram of another communication device provided in an embodiment of the present application;

[0049] Figure 9 A schematic diagram of the structure of a filter provided in an embodiment of the present application;

[0050] Figure 10 A schematic diagram of the structure of another filter provided in an embodiment of the present application;

[0051] Figure 11 A schematic diagram of the structure of another filter provided in an embodiment of the present application;

[0052] Figure 12 A schematic diagram of the structure of another filter provided in an embodiment of the present application;

[0053] Figure 13 A circuit diagram of another communication device provided in an embodiment of the present application;

[0054] Figure 14 A schematic structural diagram of a bandpass filter provided in an embodiment of the present application;

[0055] Figure 15 A schematic structural diagram of another bandpass filter provided in an embodiment of the present application;

[0056] Figure 16 This is a schematic structural diagram of another bandpass filter provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0058] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0059] In the description and claims of the embodiments of this application, the terms "first" and "second" are used to distinguish different objects, rather than to describe a specific order of objects. For example, the terms "first target object" and "second target object" are used to distinguish different objects, rather than to describe a specific order of objects.

[0060] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0061] In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more. For example, "multiple processing units" means two or more processing units; "multiple systems" means two or more systems.

[0062] Before describing the technical solutions provided by the embodiments of the present application, a brief description of the related technologies involved in the present application is first given:

[0063] 5G New Radio (5GNR) technology, referred to as NR, is a communication technology that is about to be commercialized on a large scale. There are currently two ways to network 5G base stations, one is standalone networking (StandaloneSA) and the other is non-standalone networking (None-Standalone, NSA). Among them, NSA refers to the way of deploying and networking 5G base stations (g-NodeBgNB) on existing 4G base stations (Evolved Node BeNB). At present, the dual connectivity (Dual Connectivity, DC) method is used in NSA to achieve the collaborative work of 4G and 5G networks. Electronic devices can support 4G (fourth generation mobile communication technology) and 5G (fifth generation mobile communication technology) dual-mode simultaneous transmission and reception.

[0064] It should be noted that the frequency band of the radio frequency signal in the 5G network can be Sub6G, that is, the frequency band below 7.125GHz; the frequency band of the radio frequency signal in the 4G network can be Sub3G, that is, the frequency band below 3GHz.

[0065] From the frequency bands of the radio frequency signals in the above-mentioned 5G network and the frequency bands of the radio frequency signals in the 4G network, it can be found that the frequency bands of the 5G radio frequency signals and the frequency bands of the 4G radio frequency signals overlap, specifically the frequency bands below 3 GHz. Among them, the frequency bands below 3 GHz can include a low frequency band (LB), a middle frequency band (MB), and a high frequency band (HB). Exemplarily, LB is, for example, a frequency band below 1000 MHz, MB is, for example, a frequency band of 1.7 to 2.3 GHz, and HB is, for example, a frequency band of 2.3 to 2.7 GHz.

[0066] In order to better achieve communication, the current 4G frequency and 5G frequency ranges are divided into different frequency bands, and in order to distinguish the divided frequency bands, corresponding frequency band numbers are also assigned to different frequency bands. For example, for the frequency bands divided from the 5G frequency range, the frequency band number starts with "n", such as n3, n41, n7, etc. For the frequencies divided from the 4G frequency range, the frequency band number starts with "B", such as B1, B2, B3, B66, B7, B8, etc. The above-mentioned LBs may include B28, B5, n8, B8, etc.; the above-mentioned MBs may include n3, B1, B2, B3, B66, etc.; the above-mentioned HBs may include n41, B41, n40, B40, n7, B7, etc.

[0067] MIMO (Multiple-Input Multiple-Output) antenna technology uses multiple transmit antennas (e.g., a base station) and receive antennas (e.g., a 4x4 MIMO antenna system) at both the transmitter and receiver ends, thereby improving communication quality. It fully utilizes spatial resources, enabling multiple transmissions and multiple receptions through multiple antennas. This significantly increases system channel capacity without increasing spectrum resources or antenna transmit power. Electronic devices using 4x4 MIMO can achieve high-speed throughput transmission of four signals. These four signal transmission channels are the primary transmit and receive (TRX) channel, the diversity receive (DRX) channel, the MIMO primary receive (PRX) channel, and the MIMO DRX channel.

[0068] It should be understood that the above description is merely an example listed for a better understanding of the technical solution of this embodiment, and is not intended to be the sole limitation on this embodiment.

[0069] The embodiments of the present application provide an electronic device. The electronic device provided in the embodiments of the present application may include but is not limited to mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), personal digital assistants (PDAs), point of sales (POS) machines, intercoms, car computers, televisions, smart wearable devices (such as smart watches or smart bracelets), smart home devices (such as Bluetooth speakers), driving recorders, security equipment, and other electronic devices that can communicate with external devices. The embodiments of the present application do not specifically limit the specific types of the above-mentioned electronic devices. For the convenience of explanation, the following description takes the electronic device as an example.

[0070] See also Figure 1 , Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, wherein: Figure 1 (1) is a schematic diagram of the front structure of the electronic device. Figure 1 (2) in the figure is a schematic diagram of the back structure of the electronic device. Figure 1 As shown, the mobile phone 100 includes a display module 10 , a back cover (also called a battery cover) 20 and a middle frame 30 .

[0071] The display module 10 includes a stacked cover plate and a display screen. The cover plate, for example, protects the display screen. Examples of display screens include liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays, and LED displays. Examples of LED displays include micro-LED displays and mini-LED displays. The present embodiment does not limit the type of display screen.

[0072] The material of the back cover 20 may include, for example, opaque materials such as plastic, plain leather, and fiberglass; or may include translucent materials such as glass. The present embodiment of the application does not limit the material of the back cover 20.

[0073] The middle frame 30 includes an annular appearance member 31 and a support member (not shown) located inside the annular appearance member 31 and between the display module 10 and the back cover 20 .

[0074] The display module 10, the back cover (also called the battery cover) 20 and the annular appearance member 31 surround a housing cavity, in which a battery, a printed circuit board (PCB) 40 and functional components arranged on the PCB 40 are arranged. Figure 1 (not shown in the figure), functional devices may include, for example, a power management module, a charging management module, a system-on-chip (SoC), a radio frequency integrated circuit (RFIC), and a radio frequency front-end module (RFFEM). Each device is electrically connected through the PCB 40 to achieve signal transmission and interaction. The support member can support part of the structure in the accommodating cavity.

[0075] The battery can be electrically connected to the charging management module and PCB 40 through the power management module. The power management module receives input from the battery and / or the charging management module and provides power to the system-on-chip, radio frequency integrated circuit, radio frequency front-end module, display screen, etc. The power management module can also be used to monitor parameters such as battery capacity, battery cycle count, battery health status (leakage, impedance), etc. In some other embodiments, the power management module can also be set in the system-on-chip. In other embodiments, the power management module and the charging management module can also be set in the same device.

[0076] It is understandable that Figure 1The figures below and the accompanying drawings schematically illustrate only some of the components included in the mobile phone 100. In practice, the mobile phone 100 may have more or fewer components than shown in the figures, or some components may be combined or separated, or arranged differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0077] It should be noted that Figure 1 In the embodiment, the mobile phone 100 is in the shape of a rectangular flat plate. In other optional embodiments, the shape of the electronic device can also be a square flat plate, a circular flat plate, an oval flat plate, etc. Of course, the electronic device can also be a foldable electronic device, etc.

[0078] The annular appearance member 31 may include a top frame 311, a bottom frame 312, a left frame 313, and a right frame 314. The top frame 311, bottom frame 312, left frame 313, and right frame 314 form a square ring structure. The top frame 311 and bottom frame 312 are disposed opposite each other, while the left frame 313 and right frame 314 are disposed opposite each other. The top frame 311 is connected to one end of the left frame 313 and one end of the right frame 314 with rounded corners, respectively. The bottom frame 312 is connected to the other end of the left frame 313 and the other end of the right frame 314 with rounded corners, respectively, thereby forming a rounded rectangular area. The annular appearance member 31 may be made of metal, ceramic, glass, or the like. When the annular appearance member 31 is metal, the material of the metal appearance member includes, but is not limited to, aluminum alloy, stainless steel, steel-aluminum composite die-cast plate, or titanium alloy.

[0079] For example, at least a portion of the annular exterior member 31 (e.g., a metal exterior member) can form an antenna module. The antenna module, along with the RF front-end module, RF integrated circuit, and system-on-chip (SoC) on the PCB 40, constitute a communication device, enabling the electronic device to wirelessly communicate with other devices via the communication device.

[0080] It should be noted that the top, bottom, left and right are the positions of the frames when the user holds the mobile phone 100 and the display module 10 of the mobile phone 100 faces the user.

[0081] See also Figure 2 , Figure 2 This is a circuit diagram of a communication device provided in an embodiment of the present application. Figure 2 As shown, the communication device 50 includes an antenna module 51, a radio frequency front-end module 52, a radio frequency integrated circuit 53 and a system-level chip 54. The antenna module 51, the radio frequency front-end module 52, the radio frequency integrated circuit 53 and the system-level chip 54 are coupled to realize various functions associated with transmitting and receiving radio frequency signals.

[0082] For example, when mobile phone 100 transmits a signal, SoC 54 synthesizes the data to be transmitted (digital signal) into a baseband signal to be transmitted, modulates the baseband signal into a baseband modulated signal, and sends it to RFIC 53. RFIC 53 converts the baseband modulated signal into a transmit signal (RF signal). The transmit signal is then processed by RF front-end module 52 for up-conversion, filtering, and amplification before being transmitted to antenna module 51 for transmission. The path by which the transmit signal is sent from SoC 54 to antenna module 51 is referred to as a transmit link (or transmit path).

[0083] Accordingly, when mobile phone 100 needs to receive a signal, antenna module 51 sends the received signal (RF signal) to RF front-end module 52. RF front-end module 52 performs frequency selection, filtering, amplification, down-conversion, and other processing on the RF signal before sending it to RF integrated circuit 53. RF integrated circuit 53 processes the RF signal into a baseband modulated signal and transmits the baseband modulated signal to system-on-chip 54. System-on-chip 54 converts the baseband modulated signal into a baseband signal and then converts the baseband signal into data before performing corresponding processing. The path from antenna module 51 to system-on-chip 54 can be called a receive link (or receive path).

[0084] The above-mentioned electronic device can be an electronic device that supports simultaneous transmission and reception of 4G and 5G dual standards, or it can be an electronic device that only supports transmission and reception of one standard (such as 4G).

[0085] It should be understood that for electronic devices that support simultaneous 4G and 5G dual-mode transmission and reception, the RF front-end module supports simultaneous operation of the 4G and 5G RF front-end pathways. For electronic devices that support transmission and reception of a single standard (such as 4G), the RF front-end module only needs to support operation of the 4G RF front-end pathway.

[0086] It should also be understood that the above description is only an example listed for a better understanding of the technical solution of this embodiment, and is not the only limitation to this embodiment. With the development of communication technology, the above-mentioned electronic device can also be other dual-mode simultaneous transceiver electronic devices, or, electronic devices that only support one mode of transceiver, for example, electronic devices that support 5GNR and future next-generation communication technologies (for example, 6G), or electronic devices that support 4G and future next-generation communication technologies (for example, 6G), or electronic devices that only support future next-generation communication technologies (for example, 6G), etc., which are not limited here.

[0087] Since most current electronic devices (such as mobile phones, tablets, laptops, etc.) support simultaneous transmission and reception of 4G and 5G dual-modes and support 4*4 MIMO, the following content is explained in detail using electronic devices that support simultaneous transmission and reception of 4G and 5G dual-modes and support 4*4 MIMO as an example. The following content does not constitute a limitation on this application.

[0088] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of a wireless communication system provided in an embodiment of the present application. Figure 3 As shown, the wireless communication system may include an electronic device (such as a mobile phone 100) that supports dual-mode simultaneous transmission and reception capabilities, as well as an access network device 1 and an access network device 2. The access network device 1 may be a 4G base station, and the access network device 2 may be a 5G base station, that is, the mobile phone 100 may communicate with the eNB and gNB at the same time.

[0089] See also Figure 4 , Figure 4 This is a circuit diagram of another communication device provided in an embodiment of the present application. Figure 4 As shown, the antenna module 51 in the communication device 50 may include, for example, a first antenna unit 511 and a second antenna unit 512. The first antenna unit 511 includes a main set transmit and receive shared antenna 5111, a diversity transmit and receive shared antenna 5112, a MIMO main set receive antenna 5113, and a MIMO diversity receive antenna 5114. The second antenna unit 512 includes, for example, a main set transmit and receive shared antenna 5121 and a diversity transmit and receive shared antenna 5122. The first antenna unit 511 can receive and transmit 5G frequency band signals, and the second antenna unit 512 can transmit and receive 4G frequency band signals. The main set transmit and receive shared antenna 5111, the diversity transmit and receive shared antenna 5112, the MIMO main set receive antenna 5113, the MIMO diversity receive antenna 5114, the main set transmit and receive shared antenna 5121, and the diversity transmit and receive shared antenna 5122 may be one or more of multi-frequency antennas, array antennas, or on-chip antennas.

[0090] Continue to see Figure 4 The RF front-end module 52 includes a first RF front-end main diversity transceiver unit 521, which includes: an RF front-end main set transceiver subunit 5211, an RF front-end diversity receiving subunit 5212 and a double-pole double-throw switch 5213, and the RF integrated circuit 53 includes an RF transmitting end 531, a main set receiving end 532 and a diversity receiving end 533.

[0091] A first end of the double-pole double-throw switch 5213 is electrically connected to the main transceiver shared antenna 5111, a second end of the double-pole double-throw switch 5213 is electrically connected to the diversity transceiver shared antenna 5112, a third end of the double-pole double-throw switch 5213 is electrically connected to a first end of the RF front-end main transceiver subunit 5211, a fourth end of the double-pole double-throw switch 5213 is electrically connected to a first end of the RF front-end diversity receiver subunit 5212, a second end of the RF front-end main transceiver subunit 5211 is electrically connected to the RF transmitting end 531 of the RF integrated circuit 53, a third end of the RF front-end main transceiver subunit 5211 is electrically connected to the main receiving end 532 of the RF integrated circuit 53, and a second end of the RF front-end diversity receiver subunit 5212 is electrically connected to the diversity receiving end 533 of the RF integrated circuit 53.

[0092] It can be understood that the main set transceiver shared antenna 5111, the double-pole double-throw switch 5213 and the RF front-end main set transceiver subunit 5211 constitute the TRX channel, and the diversity transceiver shared antenna 5112, the double-pole double-throw switch 5213 and the RF front-end diversity receiving subunit 5212 constitute the DRX channel.

[0093] Continue to see Figure 4 The RF front-end module 52 includes a second RF front-end main diversity transceiver unit 522, which includes: an RF front-end main set transceiver subunit 5221, an RF front-end diversity receiving subunit 5222 and a double-pole double-throw switch 5223, and the RF integrated circuit 53 includes an RF transmitting end 534, a main set receiving end 535 and a diversity receiving end 536.

[0094] A first end of the double-pole double-throw switch 5223 is electrically connected to the main transceiver shared antenna 5121, a second end of the double-pole double-throw switch 5223 is electrically connected to the diversity transceiver shared antenna 5122, a third end of the double-pole double-throw switch 5223 is electrically connected to a first end of the RF front-end main transceiver subunit 5221, a fourth end of the double-pole double-throw switch 5223 is electrically connected to a first end of the RF front-end diversity receiver subunit 5222, a second end of the RF front-end main transceiver subunit 5221 is electrically connected to the RF transmitting end 534 of the RF integrated circuit 53, a third end of the RF front-end main transceiver subunit 5221 is electrically connected to the main receiving end 535 of the RF integrated circuit 53, and a second end of the RF front-end diversity receiver subunit 5222 is electrically connected to the diversity receiving end 536 of the RF integrated circuit 53.

[0095] The specific structures of the RF front-end main transceiver subunit 5211 and the RF front-end diversity receiving subunit 5212, as well as the RF front-end main transceiver subunit 5221 and the RF front-end diversity receiving subunit 5222 (for example, including a duplexer, etc.) are similar to those in the existing technology. For details, please refer to the existing technology and will not be repeated here.

[0096] Continue to see Figure 4 The RF front-end module 52 also includes a MIMO main set RF front-end receiving unit 523, which includes at least a MIMO main set RF switch SW1, multiple MIMO main set receiving bandpass filters LB1 and a MIMO main set receiving low noise amplifier LNA1. The RF integrated circuit 53 also includes a MIMO main set receiving end 537. The MIMO main set receiving antenna 5113 is electrically connected to the common port of the MIMO main set RF switch SW1. The multiple frequency division ports of the MIMO main set RF switch SW1 are respectively electrically connected to the first ends of the multiple MIMO main set receiving bandpass filters LB1 in a one-to-one correspondence. The second ends of the multiple MIMO main set receiving bandpass filters LB1 are all electrically connected to the first end of the MIMO main set receiving low noise amplifier LNA1. The second end of the MIMO main set receiving low noise amplifier LNA1 is electrically connected to the MIMO main set receiving end 537 of the RF integrated circuit 53.

[0097] The RF front-end module 52 also includes a MIMO diversity RF front-end receiving unit 524, which includes at least a MIMO diversity RF switch SW2, multiple MIMO diversity receiving bandpass filters LB2 and a MIMO diversity receiving low noise amplifier LNA2. The RF integrated circuit 53 also includes a MIMO diversity receiving end 538. The MIMO diversity receiving antenna 5114 is electrically connected to the common port of the MIMO diversity RF switch SW2. The multiple frequency division ports of the MIMO diversity RF switch SW2 are respectively electrically connected to the first ends of the multiple MIMO diversity receiving bandpass filters LB2 in a one-to-one correspondence. The second ends of the multiple MIMO diversity receiving bandpass filters LB2 are all electrically connected to the first end of the MIMO diversity receiving low noise amplifier LNA2. The second end of the MIMO diversity receiving low noise amplifier LNA2 is electrically connected to the MIMO diversity receiving end 538 of the RF integrated circuit 53.

[0098] It should be noted that the embodiment of the present application is described by taking the example that the MIMO main set RF front-end receiving unit 523 includes three MIMO main set receiving bandpass filters LB1, and the MIMO diversity RF front-end receiving unit 524 includes three MIMO diversity receiving bandpass filters LB2.

[0099] It can be understood that the MIMO main set receiving antenna 5113, one of the MIMO main set receiving bandpass filters LB1 and the MIMO main set receiving low noise amplifier LNA1 constitute a receiving path. Therefore, when the MIMO main set RF front-end receiving unit 523 includes multiple MIMO main set receiving bandpass filters LB1, the MIMO main set receiving antenna 5113, multiple MIMO main set receiving bandpass filters LB1 and the MIMO main set receiving low noise amplifier LNA1 constitute multiple receiving paths (i.e., MIMO PRX channels), and the multiple receiving paths share the MIMO main set receiving low noise amplifier LNA1.

[0100] Exemplarily, when the frequency bands supported by the mobile phone 100 include band1 (i.e., B1), band3 (i.e., B3), and band66 (i.e., B66), the receiving path composed of the MIMO main set receiving antenna 5113, one of the MIMO main set receiving bandpass filters LB1, and the MIMO main set receiving low noise amplifier LNA1 is used to transmit the receiving frequency band of band1 (the transmitting frequency band of band1 is transmitted to the base station end through the above-mentioned TRX channel or DRX channel) and perform corresponding processing on the receiving frequency band of band1; the MIMO main set receiving antenna 5113, another MIMO main set receiving bandpass filter LB1, and the MIMO main set receiving low noise amplifier LNA The receiving path formed by MIMO main set receiving antenna 5113, the third MIMO main set receiving bandpass filter LB1, and the MIMO main set receiving low noise amplifier LNA1 are used to transmit the receiving frequency band of band 66 (the transmitting frequency band of band 66 is transmitted to the base station through the TRX channel or DRX channel) and perform corresponding processing on the receiving frequency band of band 66. The receiving frequency band corresponding to band 1 is 2110 MHz-2170 MHz, and the transmitting frequency band is 1920 MHz-1980 MHz. The receiving frequency band corresponding to band 3 is 1805 MHz-1880 MHz, and the transmitting frequency band is 1710 MHz-1785 MHz. The receiving frequency band corresponding to band 66 is 2110 MHz-2200 MHz, and the transmitting frequency band is 1710 MHz-1780 MHz.

[0101] Accordingly, the MIMO diversity receive antenna 5114, one of the MIMO diversity receive bandpass filters LB2, and the MIMO diversity receive low noise amplifier LNA2 constitute a receive path. Therefore, when the MIMO diversity RF front-end receive unit 524 includes multiple MIMO diversity receive bandpass filters LB2, the MIMO diversity receive antenna 5114, the multiple MIMO diversity receive bandpass filters LB2, and the MIMO diversity receive low noise amplifier LNA2 constitute multiple receive paths (i.e., MIMO DRX channels), and the multiple receive paths share the MIMO diversity receive low noise amplifier LNA2.

[0102] Exemplarily, when the frequency bands supported by the mobile phone 100 include band1 (i.e., B1), band3 (i.e., B3), and band66 (i.e., B66), the receiving path composed of the MIMO diversity receiving antenna 5114, one of the MIMO diversity receiving bandpass filters LB2, and the MIMO diversity receiving low noise amplifier LNA2 is used to transmit the receiving frequency band of band1 (the transmitting frequency band of band1 is transmitted to the base station end through the above-mentioned TRX channel or DRX channel), and the receiving frequency band of band1 is processed accordingly; the MIMO diversity receiving antenna 5114, another MIMO diversity receiving bandpass filter LB2, and the MIMO diversity receiving low noise amplifier LNA2 are used to transmit the receiving frequency band of band1 (the transmitting frequency band of band1 is transmitted to the base station end through the above-mentioned TRX channel or DRX channel), and the receiving frequency band of band1 is processed accordingly; The receiving path formed by the MIMO diversity reception low noise amplifier LNA2 is used to transmit the receiving frequency band of band 3 (the transmit signal of band 3 is transmitted to the base station through the above-mentioned TRX channel or DRX channel) and performs corresponding processing on the receive signal of band 3; the receiving path formed by the MIMO diversity reception antenna 5114, the third MIMO diversity reception bandpass filter LB2 and the MIMO diversity reception low noise amplifier LNA2 is used to transmit the receiving frequency band of band 66 (the transmit signal of band 66 is transmitted to the base station through the above-mentioned TRX channel or DRX channel) and performs corresponding processing on the receive frequency band of band 66.

[0103] Depend on Figure 4 It can be seen that when the electronic device is an electronic device that supports multi-band transmission and reception, the MIMO main set RF front-end receiving unit 523 and the MIMO diversity RF front-end receiving unit 524 need to set a separate receiving channel for each frequency band. For example, the MIMO main set RF front-end receiving unit 523 needs to set three receiving channels for band1 (i.e. B1), band3 (i.e. B3) and band66 (i.e. B66), and the MIMO diversity RF front-end receiving unit 524 needs to set three receiving channels for band1 (i.e. B1), band3 (i.e. B3) and band66 (i.e. B66). Undoubtedly, this will occupy a larger layout area of ​​the printed circuit board, and the frequency band is limited. Each receiving channel can only be used for its corresponding frequency band and cannot be reused for other frequency bands.

[0104] Based on this, an embodiment of the present application provides a communication device. In the communication device provided by the embodiment of the present application, multiple receiving frequency bands supported by the electronic device can share the receiving channel formed between the radio frequency integrated circuit and the receiving antenna, and the conduction of the corresponding filter is controlled by the control unit to reduce the blocking of the receiving signal in the receiving channel by the transmitting signal. Compared with each receiving frequency band corresponding to a receiving channel, the area of ​​the printed circuit board occupied by the communication circuit is reduced.

[0105] The communication device provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings. The following content does not constitute a limitation to the present application.

[0106] See also Figure 5 , Figure 5 A circuit diagram of another communication device is provided for the embodiment of the present application. It should be noted that in order to more clearly demonstrate the inventive point of the present application, Figure 5 Only part of the structure is shown, and the entire structure of the communication device is not shown. The following figures are the same and will not be described in detail. Figure 5 As shown, the above content ( Figure 4 The MIMO main set RF front-end receiving unit 523 includes a switch module 5231, a filter module 5232 and a MIMO main set receiving low noise amplifier LNA1, the filter module 5232 includes multiple filters 52321, the MIMO main set receiving antenna 5113, the first end of the MIMO main set receiving low noise amplifier LNA1 and the first end of the switch module 5231 are coupled to the first node N1, the second end of the switch module 5231 is electrically connected to the first ends of the multiple filters 52321 respectively, the second ends of the multiple filters 52321 are grounded, the system-level chip 54 is electrically connected to the control end of the switch module 5231, and the second end of the MIMO main set receiving low noise amplifier LNA1 is electrically connected to the MIMO main set receiving end 537 of the RF integrated circuit 53. The radio frequency integrated circuit 53 is used to determine the current receiving frequency in the radio frequency signal received by the MIMO main set receiving antenna 5113, and the system-level chip 54 is used to determine the target filter 52321 in the filtering module 5232 based on the current receiving frequency and a pre-saved target correspondence relationship, so as to control the switch module 5231 to turn on the target filter 52321, wherein the target correspondence relationship refers to the correspondence between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters 52321 in the multiple frequency bands supported by the electronic device (each frequency band includes a receiving frequency band and a transmitting frequency band corresponding to the receiving frequency band); the turned-on target filter 52321 is used to suppress the transmitting sub-band corresponding to the receiving sub-band where the current receiving frequency is located.

[0107] It should be noted that the embodiment of the present application does not limit the number of receiving sub-bands split from each receiving frequency band, the number of transmitting sub-bands split from each transmitting frequency band, and the number of filters 52321. Those skilled in the art can split and set them according to actual conditions.

[0108] Exemplarily, the multiple frequency bands supported by the electronic device include, for example, a first frequency band, a second frequency band, and a third frequency band. The first frequency band includes a first receiving frequency band and a first transmitting frequency band corresponding to the first receiving frequency band. The second frequency band includes the first receiving frequency band and a first transmitting frequency band corresponding to the first receiving frequency band. The third frequency band includes the first receiving frequency band and a first transmitting frequency band corresponding to the first receiving frequency band. The above-mentioned receiving frequency band is split into at least two receiving sub-bands. Correspondingly, the transmitting frequency band corresponding to the receiving frequency band is split into at least two transmitting sub-bands. Each receiving sub-band corresponds to a transmitting sub-band, and each transmitting sub-band corresponds to a filter 52321. That is, the transmitting sub-band corresponding to the receiving sub-band is suppressed by the filter 52321.

[0109] For example, the electronic device supports multiple frequency bands such as band1 (i.e. B1), band3 (i.e. B3) and band66 (i.e. B66) (medium frequency band), where the receiving frequency band corresponding to band1 is 2110MHz-2170 MHz, and the transmitting frequency band is 1920MHz-1980 MHz, the receiving frequency band corresponding to band3 is 1805MHz-1880 MHz, and the transmitting frequency band is 1710MHz-1785 MHz, and the receiving frequency band corresponding to band66 is 2110MHz-2200 MHz, and the transmitting frequency band is 1710MHz-1780 MHz.

[0110] For example, the receiving frequency band 1805MHz-1880MHz corresponding to band3 is split into three segments: 1805-1835MHz, 1835-1855MHz, and 1855-1880MHz. The transmitting frequency band 1710MHz-1785MHz is split into three segments: 1710-1740MHz, 1740-1760MHz, and 1760-1785MHz. Accordingly, band3 requires three corresponding filters, such as the first filter, the second filter, and the third filter. The corresponding relationship between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band and the multiple filters can be, for example: the receiving sub-band 1805-1835MHz and the transmitting sub-band 1710-1740MHz split from band3 correspond to the first filter, the receiving sub-band 1835-1855MHz and the transmitting sub-band 1740-1760MHz split from band3 correspond to the second filter, the receiving sub-band 1855-1880MHz and the transmitting sub-band 1760-1785MHz split from band3 correspond to the third filter. In this way, when the RF integrated circuit and the receiver are connected When the frequency band received by the receiving channel formed between the receiving antennas is, for example, within the 1805-1835 MHz frequency band, the first filter can suppress the transmitted signals in the 1710-1740 MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 1835-1855 MHz frequency band, the second filter can suppress the transmitted signals in the 1740-1760 MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 1855-1880 MHz frequency band, the third filter can suppress the transmitted signals in the 1760-1785 MHz frequency band.

[0111] Similarly, the receiving frequency band 2110MHz-2170MHz corresponding to band1 is split into two segments, 2110-2140MHz and 2140-2170MHz, and the transmitting frequency band 1920MHz-1980MHz is split into two segments, 1920-1950MHz and 1950-1980MHz. Accordingly, band1 requires two corresponding filters, such as the fourth filter and the fifth filter. The correspondence between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters can be, for example, as follows: the receiving sub-bands 2110-2140MHz and 1920MHz-1980MHz split from band1 correspond to the fourth filter, and the receiving sub-bands 2140-2170MHz and the transmitting sub-band 1950-1980MHz split from band1 correspond to the fifth filter. In this way, when the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 2110-2140MHz frequency band, the fourth filter can suppress the transmitting signal within the 1920-1950MHz frequency band, and when the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 2140-2170MHz frequency band, the second filter can suppress the transmitting signal within the 1950-1980MHz frequency band.

[0112] Similarly, the receiving frequency band 2110MHz-2200MHz corresponding to band66 is split into three segments: 2110-2140MHz, 2140-2160MHz, and 2160-2200MHz, and the transmitting frequency band 1710MHz-1780MHz is split into three segments: 1710-1740MHz, 1740-1760MHz, and 1760-1780MHz. Accordingly, band1 requires three corresponding filters, such as the sixth filter, the seventh filter, and the eighth filter. The corresponding relationship between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters can be, for example, as follows: the receiving sub-band 2110-2140 MHz and the transmitting sub-band 1710-1740 MHz split from band66 correspond to the sixth filter, the receiving sub-band 2140-2160 MHz and the transmitting sub-band 1740-1760 MHz split from band66 correspond to the seventh filter, the receiving sub-band 2160-2200 MHz and the transmitting sub-band 1760-1780 MHz split from band66 correspond to the eighth filter. In this way, when the receiving channel formed between the radio frequency integrated circuit and the receiving antenna receives a frequency band of, for example, 2110-2140 MHz, the transmitting sub-band 1710-1740 MHz corresponds to the sixth filter, the receiving sub-band 2140-2160 MHz and the transmitting sub-band 1740-1760 MHz split from band66 correspond to the seventh filter, and the receiving sub-band 2160-2200 MHz and the transmitting sub-band 1760-1780 MHz corresponds to the eighth filter. MHz frequency band, the sixth filter can suppress the transmission signal in the 1710-1740 MHz frequency band. When the frequency band received by the receiving channel formed between the RF integrated circuit and the receiving antenna is, for example, in the 2140-2160 MHz frequency band, the seventh filter can suppress the transmission signal in the 1740-1760 MHz frequency band. When the frequency band received by the receiving channel formed between the RF integrated circuit and the receiving antenna is, for example, in the 2160-2200 MHz frequency band, the eighth filter can suppress the transmission signal in the 1760-1780 MHz frequency band.

[0113] For example, the electronic device supports multiple frequency bands such as B28, B8 and B5 (low frequency band), among which the receiving frequency band corresponding to B28 is 758MHz-803 MHz, and the transmitting frequency band is 703MHz-748 MHz; the receiving frequency band corresponding to B8 is 925MHz-960 MHz, and the transmitting frequency band is 880MHz-915 MHz; the receiving frequency band corresponding to B5 is 869MHz-894 MHz, and the transmitting frequency band is 824MHz-849 MHz.

[0114] For example, the receiving frequency band 758MHz-803MHz corresponding to B28 is split into three segments: 758-775MHz, 775-790MHz, and 790-803MHz, and the transmitting frequency band 703MHz-748MHz is split into three segments: 703-720MHz, 720-735MHz, and 735-748MHz. Accordingly, B28 requires three corresponding filters, such as the first filter, the second filter, and the third filter. The corresponding relationship between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band and the multiple filters can be, for example: the receiving sub-band 758-775MHz and the transmitting sub-band 703-720MHz split from B28 correspond to the first filter, the receiving sub-band 775-790MHz and the transmitting sub-band 720-735MHz split from B28 correspond to the second filter, the receiving sub-band 790-803MHz and the transmitting sub-band 735-748MHz split from B28 correspond to the third filter. In this way, when the RF integrated circuit and the receiving antenna When the frequency band received by the receiving channel formed between them is, for example, within the 758-775MHz frequency band, the first filter can suppress the transmission signal in the 703-720MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 775-790MHz frequency band, the second filter can suppress the transmission signal in the 720-735MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 790-803MHz frequency band, the third filter can suppress the transmission signal in the 735-748MHz frequency band.

[0115] Similarly, the receiving frequency band 869MHz-894MHz corresponding to B5 is split into two segments, 869-883MHz and 883-894MHz, and the transmitting frequency band 824MHz-849MHz is split into two segments, 824-838MHz and 838-849MHz. Accordingly, B5 needs to correspond to two filters, such as the fourth filter and the fifth filter. The correspondence between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters can be, for example, as follows: the receiving sub-bands 869-883MHz and 824-838MHz split from B5 correspond to the fourth filter, and the receiving sub-bands 883-894MHz and the transmitting sub-band 838-849MHz split from B5 correspond to the fifth filter. In this way, when the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 869-883MHz frequency band, the fourth filter can suppress the transmitting signal within the 824-838MHz frequency band. When the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 883-894MHz frequency band, the second filter can suppress the transmitting signal within the 838-849MHz frequency band.

[0116] Similarly, the receiving frequency band 925MHz-960MHz corresponding to B8 is split into two segments, 925-945MHz and 945-960MHz, and the transmitting frequency band 880MHz-915MHz is split into two segments, 880-900MHz and 900-915MHz. Accordingly, B8 needs to correspond to two filters, such as the sixth filter and the seventh filter. The correspondence between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters can be, for example, as follows: the receiving sub-bands 925-945MHz and 880-900MHz split from B8 correspond to the sixth filter, and the receiving sub-bands 945-960MHz and the transmitting sub-band 900-915MHz split from B8 correspond to the seventh filter. In this way, when the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 925-945MHz frequency band, the fourth filter can suppress the transmitting signal within the 880-900MHz frequency band, and when the frequency band received by the receiving channel formed between the radio frequency integrated circuit and the receiving antenna is, for example, within the 945-960MHz frequency band, the second filter can suppress the transmitting signal within the 900-915MHz frequency band.

[0117] As can be seen, when mobile phone 100 supports multiple frequency bands, MIMO main RF front-end receiving unit 523 only needs to set up a common receiving channel for multiple frequency bands. Compared with setting up a receiving channel for each receiving frequency band, this reduces the area occupied by the communication device on the printed circuit board. In addition, the system-on-chip 54 controls the conduction of the corresponding filter, thereby reducing the blockage of the receiving sub-band in the receiving channel by the transmitting sub-band.

[0118] Considering that the transmission bands corresponding to some frequency bands (frequency bands supported by electronic devices) overlap, for example, the transmission band corresponding to band 3 is 1710 MHz-1785 MHz, and the transmission band corresponding to band 66 is 1710 MHz-1780 MHz, the transmission band corresponding to band 66 is within the transmission band corresponding to band 3. As can be seen from the foregoing, three filters 52321 are provided for band 3, namely the first filter, the second filter, and the third filter, and three filters 52321 are provided for band 66, namely the sixth filter, the seventh filter, and the eighth filter. However, the frequency bands filtered out by the three filters 52321 corresponding to band 3 are substantially the same as the frequency bands filtered out by the three filters 52321 corresponding to band 66, resulting in waste of filters 52321. Based on this, by providing at least one filter 52321 to be shared by the overlapping portions of multiple transmission bands, the number of filters 52321 in the filter module 5232 can be reduced, further reducing the area occupied by the communication circuit on the printed circuit board, and reducing the cost of the communication circuit.

[0119] For example, the transmission frequency band corresponding to band3 is 1710MHz-1785MHz, the transmission frequency band corresponding to band66 is 1710MHz-1780MHz, the transmission frequency band corresponding to band66 is located within the transmission frequency band corresponding to band3, the receiving frequency band 1805MHz-1880MHz corresponding to band3 is split into three segments: 1805-1835MHz, 1835-1855MHz and 1855-1880MHz, the transmission frequency band 1710MHz-1785MHz is split into three segments: 1710-1740MHz, 1740-1760MHz and 1760-1785MHz, the receiving frequency band 2110MHz-2200MHz corresponding to band66 is split into three segments: 2110MHz-2140MHz, 2140MHz-2160MHz and 2160MHz-2200MHz, the transmission frequency band 1710MHz-1780 Band 3 and band 66 can share three filters, for example, a first filter, a second filter, and a third filter. The first filter suppresses transmitted signals in the 1710-1740 MHz band, the second filter suppresses transmitted signals in the 1740-1760 MHz band, and the third filter suppresses transmitted signals in the 1760-1785 MHz band. In this way, when the receiving frequency of band3 is 1805-1835MHz or the receiving frequency of band66 is 2110-2140MHz, the first filter can be turned on; when the receiving frequency of band3 is 1835-1855MHz or the receiving frequency of band66 is 2140-2160MHz, the second filter can be turned on; when the receiving frequency of band3 is 1855-1880MHz or the receiving frequency of band66 is 2160-2200MHz, the third filter can be turned on. There is no need to set six filters for band3 and band66, that is, the settings of the sixth filter, the seventh filter and the eighth filter are reduced. In this way, the area of ​​the printed circuit board occupied by the communication device is reduced, and the cost of the communication device is reduced.

[0120] In order to better understand this solution, the above content is explained below in conjunction with a practical application scenario. The following content does not constitute a limitation of this application.

[0121] See also Figure 6 , Figure 6 A circuit diagram of another communication device is provided for an embodiment of the present application. Figure 6As shown, the electronic device supports multiple frequency bands, for example, band1 (i.e., B1), band3 (i.e., B3) and band66 (i.e., B66), where the receiving frequency band corresponding to band1 is 2110MHz-2170 MHz, and the transmitting frequency band is 1920MHz-1980 MHz, the receiving frequency band corresponding to band3 is 1805MHz-1880 MHz, and the transmitting frequency band is 1710MHz-1785 MHz, and the receiving frequency band corresponding to band66 is 2110MHz-2200 MHz, and the transmitting frequency band is 1710MHz-1780 MHz.

[0122] The receiving frequency bands of band1, band3 and band66 are divided into six segments: 1805-1835MHz, 1835-1855MHz, 1855-1880MHz, 2110-2140MHz, 2140-2170MHz and 2170-2200MHz; the transmitting frequency bands of band1, band3 and band66 are divided into six segments: 1710-1745MHz, 1745-1785MHz, 1920-1950MHz, 1950-1980MHz, 1735-1755MHz and 1940-1960MHz. Accordingly, band1, band3 and band66 need to correspond to six filters 52321, such as the first filter 52321a, the second filter 52321b and the second filter 52321c. 2321b, a third filter 52321c, a fourth filter 52321d, a fifth filter 52321e and a sixth filter 52321f. The first filter 52321a can filter out the transmission signal in the frequency band of 1710-1745 MHz, the second filter 52321b can filter out the transmission signal in the frequency band of 1745-1785 MHz, the third filter 52321c can filter out the transmission signal in the frequency band of 1920-1950 MHz, the fourth filter 52321d can filter out the transmission signal in the frequency band of 1950-1980 MHz, the fifth filter 52321e can filter out the transmission signal in the frequency band of 1735-1755 MHz, and the sixth filter 52321f can filter out the transmission signal in the frequency band of 1940-1960 MHz.

[0123] Continue to see Figure 6 When the mobile phone 100 operates in the first operator's band 3, where the transmit sub-band is 1710-1735 MHz and the receive sub-band is 1805-1830 MHz, the specific working process of the MIMO PRX channel in the mobile phone 100 is as follows: the MIMO main set receiving antenna 5113 receives the RF signal, and the RF signal is transmitted to the RF integrated circuit 53 through the MIMO main set receiving low noise amplifier LNA1 (the transmission path is as follows Figure 6The RF integrated circuit 53 determines that the current receiving sub-band is 1805-1830 MHz, and sends the determined receiving sub-band 1805-1830 MHz to the system-level chip 54. The system-level chip 54 determines that the first filter 52321a in the filtering module 5232 is the target filter based on the current receiving frequency and the pre-stored target correspondence. The system-level chip 54 turns on the first filter 52321a. In this way, when the transmitting sub-band transmitted by the TRX channel or the DRX channel is 1710-1735 MHz and is coupled to the MIMO PRX channel (the path between the MIMO main set receiving antenna 5113 and the MIMO main set receiving low noise amplifier LNA1), the transmitting sub-band will be transmitted to the first filter 52321a (the transmission path is as shown in FIG. Figure 6 The dotted arrow indicates that the transmitting sub-band 1710-1735 MHz corresponding to the current receiving frequency 1805-1830 MHz is suppressed by the first filter 52321a.

[0124] When the mobile phone 100 operates in the second operator's band 3, where the transmit sub-band is 1740-1750 MHz and the receive sub-band is 1835-1855 MHz, the specific working process of the MIMO PRX channel in the mobile phone 100 is as follows: the MIMO main set receives the RF signal from the antenna 5113, and the RF signal is transmitted to the RF integrated circuit 53 through the MIMO main set receiving low noise amplifier LNA1 (the transmission path is as shown in FIG. Figure 6 The RF integrated circuit 53 determines that the current receiving sub-band is 1835-1855 MHz, and sends the determined receiving sub-band 1835-1855 MHz to the system-level chip 54. The system-level chip 54 determines that the fifth filter 52321e in the filtering module 5232 is the target filter based on the current receiving frequency and the pre-stored target correspondence. The system-level chip 54 turns on the fifth filter 52321e. In this way, when the transmitting sub-band transmitted by the TRX channel or the DRX channel is 1740-1750 MHz and is coupled to the MIMO PRX channel (the path between the MIMO main set receiving antenna 5113 and the MIMO main set receiving low noise amplifier LNA1), the transmitting sub-band will be transmitted to the fifth filter 52321e (the transmission path is as shown in FIG. Figure 6 The fifth filter 52321e suppresses the transmission sub-band 1740-1750 MHz corresponding to the current receiving frequency 1835-1855 MHz.

[0125] It should be noted that the above example is based on the example that the MIMO main set RF front-end receiving unit 523 includes a switch module 5231 and a filter module 5232, etc., but does not constitute a limitation to the present application.

[0126] In another optional embodiment of the present application, the MIMO diversity RF front-end receiving unit 524 may also include the above-mentioned switch module and filter module, etc., for example, see Figure 7 , Figure 7 A circuit diagram of another communication device is provided for an embodiment of the present application. Figure 7 As shown, the MIMO diversity RF front-end receiving unit 524 includes a switch module 5241, a filter module 5242 and a MIMO diversity receiving low noise amplifier LNA2, the filter module 5242 includes multiple filters 52421, the MIMO diversity receiving antenna 5114, the first end of the MIMO diversity receiving low noise amplifier LNA2 and the first end of the switch module 5241 are coupled to the second node N2, the second end of the switch module 5241 is electrically connected to the first ends of the multiple filters 52421 respectively, the second ends of the multiple filters 52421 are grounded, the system-level chip 54 is electrically connected to the control end of the switch module 5241, and the second end of the MIMO diversity receiving low noise amplifier LNA2 is electrically connected to the MIMO diversity receiving end 538 of the RF integrated circuit 53. The RF integrated circuit 53 is used to determine the current receiving frequency in the RF signal received by the MIMO diversity receiving antenna 5114, and the system-level chip 54 is used to determine the target filter 52421 in the filtering module 5242 based on the current receiving frequency and a pre-saved target correspondence relationship, so as to control the switch module 5241 to turn on the target filter 52421, wherein the target correspondence relationship refers to the correspondence between the multiple receiving sub-bands split from each receiving frequency band, the multiple transmitting sub-bands split from each transmitting frequency band, and the multiple filters 52421 in the multiple frequency bands supported by the electronic device (each frequency band includes a receiving frequency band and a transmitting frequency band corresponding to the receiving frequency band); the turned-on target filter 52421 is used to suppress the transmitting sub-band corresponding to the receiving sub-band where the current receiving frequency is located. The specific connection relationship and working principle are similar to the above content. Please refer to the above content for details and will not be repeated here.

[0127] In another optional embodiment of the present application, the MIMO main set RF front-end receiving unit 523 and the MIMO diversity RF front-end receiving unit 524 may include the above-mentioned switch module and filter module, etc., for example, see Figure 8 , Figure 8 A circuit diagram of another communication device is provided for an embodiment of the present application. Figure 8As shown, the MIMO main set RF front-end receiving unit 523 includes a switch module 5231, a filtering module 5232 and a MIMO main set receiving low noise amplifier LNA1, the filtering module 5232 includes multiple filters 52321, the MIMO main set receiving antenna 5113, the first end of the MIMO main set receiving low noise amplifier LNA1 and the first end of the switch module 5231 are coupled to the first node N1, the second end of the switch module 5231 is electrically connected to the first ends of the multiple filters 52321 respectively, the second ends of the multiple filters 52321 are grounded, the system-level chip 54 is electrically connected to the control end of the switch module 5231, and the second end of the MIMO main set receiving low noise amplifier LNA1 is electrically connected to the MIMO main set receiving end 537 of the RF integrated circuit 53. The MIMO diversity RF front-end receiving unit 524 includes a switch module 5241, a filter module 5242 and a MIMO diversity receiving low noise amplifier LNA2. The filter module 5242 includes multiple filters 52421. The MIMO diversity receiving antenna 5114, the first end of the MIMO diversity receiving low noise amplifier LNA2 and the first end of the switch module 5241 are coupled to the second node N2. The second end of the switch module 5241 is electrically connected to the first ends of the multiple filters 52421 respectively. The second ends of the multiple filters 52421 are grounded. The system-level chip 54 is electrically connected to the control end of the switch module 5241. The second end of the MIMO diversity receiving low noise amplifier LNA2 is electrically connected to the MIMO diversity receiving end 538 of the RF integrated circuit 53. The RF integrated circuit 53 is used to determine the current receiving frequency in the RF signal received by the MIMO main receiving antenna 5113 and the MIMO diversity receiving antenna 5114. The system-level chip 54 is used to determine the target filter 52321 in the filtering module 5232 and the target filter 52421 in the filtering module 5242 based on the current receiving frequency and a pre-stored target correspondence relationship, so as to control the switch module 5231 to turn on the target filter 52321 and the switch module 5241 to turn on the target filter 52421. The target correspondence relationship refers to the correspondence between the multiple receiving sub-bands divided into each receiving frequency band, the multiple transmitting sub-bands divided into each transmitting frequency band, and the multiple filters in multiple frequency bands supported by the electronic device (each frequency band includes a receiving frequency band and a transmitting frequency band corresponding to the receiving frequency band). The turned-on target filter is used to suppress the transmitting sub-band corresponding to the receiving sub-band in which the current receiving frequency is located. The specific connection relationship and operating principle are similar to those described above, and can be referred to above for details, and will not be repeated here.

[0128] Of course, this solution is not limited to electronic devices that use 4*4 MIMO. As long as it receives radio frequency signals and does not conflict with the existing structure, this solution can be adopted. That is, whether it is an electronic device that uses 4*4 MIMO or other electronic devices, as long as it uses this communication device, it is within the scope of protection of this application.

[0129] In the following content, the MIMO main set RF front-end receiving unit 523 includes a switch module 5231 and a filter module 5232, and the MIMO diversity RF front-end receiving unit 524 includes a switch module 5241 and a filter module 5242 as an example for description.

[0130] Regarding the specific structure of the switch module, the embodiment of the present application does not limit the structure of the switch module, as long as any filter in the filter module can be turned on and the filters do not interfere with each other.

[0131] Exemplarily, the switch module may include a single-pole multi-throw switch, etc.

[0132] As for the specific structure of the filter, the embodiment of the present application does not limit the structure of the filter, as long as the corresponding transmission sub-band can be filtered out.

[0133] For one possible implementation, see Figure 9 , Figure 9 This is a schematic diagram of the structure of a filter provided in an embodiment of the present application. Figure 9 As shown, the filter includes a first capacitor C1, a second capacitor C2, a first inductor L1 and a second inductor L2; the first end of the first capacitor C1 and the first end of the second inductor L2 are both electrically connected to the second end of the switch module, the second end of the first capacitor C1 is electrically connected to the first end of the first inductor L1, the second end of the second inductor L2 is electrically connected to the first end of the second capacitor C2, and the second end of the first inductor L1 and the second end of the second capacitor C2 are both grounded.

[0134] At least one of the first capacitor C1 , the second capacitor C2 , the first inductor L1 , and the second inductor L2 in different filters has different parameter values ​​to suppress different transmission sub-bands.

[0135] Exemplarily, the parameter values ​​of the first capacitor C1, the second capacitor C2, the first inductor L1 or the second inductor L2 in different filters are different; or, the parameter values ​​of the first capacitor C1 and the second capacitor C2 in different filters are different; or, the parameter values ​​of the first capacitor C1 and the first inductor L1 in different filters are different; or, the parameter values ​​of the first capacitor C1 and the second inductor L2 in different filters are different; or, the parameter values ​​of the second capacitor C2 and the first inductor L1 in different filters are different; or, the parameter values ​​of the second capacitor C2 and the second inductor L2 in different filters are different; or, the parameter values ​​of the first capacitor C1, the second capacitor C2 and the first inductor L1 in different filters are different; or, the parameter values ​​of the first capacitor C1, the second capacitor C2, the first inductor L1 and the second inductor L2 in different filters are all different, etc.

[0136] In another possible implementation, see Figure 10 , Figure 10 This is a structural diagram of another filter provided in an embodiment of the present application. Figure 10 As shown, the filter includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1 and a second inductor L2; the first end of the first capacitor C1 and the first end of the second inductor L2 are both electrically connected to the second end of the switch module, the second end of the first capacitor C1 is electrically connected to the first end of the first inductor L1, the second end of the second inductor L2 is electrically connected to the first end of the second capacitor C2, the second end of the first inductor L1 and the second end of the second capacitor C2 are both grounded, the third capacitor C3 is electrically connected to the second end of the switch module, and the second end of the third capacitor C3 is electrically connected to the second end of the second inductor L2 and the first end of the second capacitor C2.

[0137] At least one of the first capacitor C1 , the second capacitor C2 , the third capacitor C3 , the first inductor L1 , and the second inductor L2 in different filters has different parameter values ​​to suppress different transmission sub-bands.

[0138] Exemplarily, the parameter values ​​of the first capacitor C1 , the second capacitor C2 , the third capacitor C3 , the first inductor L1 or the second inductor L2 in different filters are different.

[0139] In another possible implementation, see Figure 11 , Figure 11 This is a structural diagram of another filter provided in an embodiment of the present application. Figure 11As shown, the filter includes a first capacitor C1, a second capacitor C2, a first inductor L1, a second inductor L2 and a third inductor L3. The first end of the first capacitor C1 and the first end of the second inductor L2 are both electrically connected to the second end of the switch module, the second end of the first capacitor C1 is electrically connected to the first end of the first inductor L1, the second end of the second inductor L2 is electrically connected to the first end of the second capacitor C2, the second end of the first inductor L1 and the second end of the second capacitor C2 are both grounded, the first end of the third inductor L3 is electrically connected to the second end of the second inductor L2 and the first end of the second capacitor C2, and the second end of the third inductor L3 is grounded.

[0140] At least one of the first capacitor C1 , the second capacitor C2 , the first inductor L1 , the second inductor L2 and the third inductor L3 in different filters has different parameter values ​​to suppress different transmission sub-bands.

[0141] Exemplarily, the parameter values ​​of the first capacitor C1 , the second capacitor C2 , the first inductor L1 , the second inductor L2 or the third inductor L3 in different filters are different.

[0142] In another possible implementation, see Figure 12 , Figure 12 This is a structural diagram of another filter provided in an embodiment of the present application. Figure 12 As shown, the filter includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a first inductor L1, a second inductor L2 and a third inductor L3. The first end of the first capacitor C1 and the first end of the second inductor L2 are both electrically connected to the second end of the switch module, the second end of the first capacitor C1 is electrically connected to the first end of the first inductor L1, the second end of the second inductor L2 is electrically connected to the first end of the second capacitor C2, the second end of the first inductor L1 and the second end of the second capacitor C2 are both grounded, the third capacitor C3 is electrically connected to the second end of the switch module, the second end of the third capacitor C3 is electrically connected to the second end of the second inductor L2, the first end of the second capacitor C2 and the first end of the third inductor L3, and the second end of the third inductor L3 is grounded.

[0143] At least one of the first capacitor C1 , the second capacitor C2 , the third capacitor C3 , the first inductor L1 , the second inductor L2 and the third inductor L3 in different filters has different parameter values ​​to suppress different transmission sub-bands.

[0144] Exemplarily, the parameter values ​​of the first capacitor C1 , the second capacitor C2 , the first inductor L1 , the second inductor L2 or the third inductor L3 in different filters are different.

[0145] That is, the structure of the filter is more diversified, and different filters can be flexibly selected according to needs. And the structures of the filters can be the same or different. For example, the multiple filters in the filter module are Figure 9 Alternatively, multiple filters in the filtering module can be partially Figure 9 The filter in Figure 10 Filters in , etc.

[0146] As can be seen from the foregoing, the electronic device provided in the embodiment of the present application can be an electronic device that supports dual-mode simultaneous transmission and reception, such as an electronic device that supports 4G and 5G dual-mode simultaneous transmission and reception. For example, when the 4G B8 and 5G n3 frequency bands (such as ENDC_B8-n3 combination) work simultaneously, ENDC (E-UTRA-NR DualConnevtive) refers to the dual connection between the 4G wireless access network and the 5GNR. Figure 4 , B8 transmits the transmit signal through the channel in the second RF front-end main diversity transceiver unit 522 corresponding to the second antenna unit 512, and n3 transmits the transmit signal through the channel in the first RF front-end main diversity transceiver unit 521 corresponding to the first antenna unit 511.

[0147] In order to transmit the transmit frequency band of B8 to the MIMO PRX channel (the path between the MIMO main receive antenna 5113 and the MIMO main receive low noise amplifier LNA1) and / or the MIMO DRX channel (the path between the MIMO diversity receive antenna 5114 and the MIMO diversity receive low noise amplifier LNA2), the reception of n3 is affected. Figure 13 , Figure 13 This is a circuit diagram of another communication device provided in an embodiment of the present application. Figure 13 As shown, a bandpass filter 55 is provided between the MIMO main receiving antenna 5113 and the first node N1, and / or between the MIMO diversity receiving antenna 5114 and the second node N2.

[0148] Exemplarily, a bandpass filter 55 is provided between the MIMO main set receiving antenna 5113 and the first node N1; or, a bandpass filter 55 is provided between the MIMO diversity receiving antenna 5114 and the second node N2; or, a bandpass filter 55 is provided between the MIMO main set receiving antenna 5113 and the first node N1, and between the MIMO diversity receiving antenna 5114 and the second node N2.

[0149] When the electronic device can be an electronic device that supports dual-mode simultaneous transmission and reception, such a setting can avoid mutual interference of transmission signals during simultaneous transmission, thereby making the application range of the communication device wider.

[0150] The insertion loss of the bandpass filter 55 in the receiving band is, for example, less than or equal to -1dB and greater than or equal to -3dB, and the suppression of transmission is greater than 20dB, so as to better avoid signal interference and loss.

[0151] Exemplarily, the insertion loss in the receiving band of the bandpass filter is -1dB, -1.5dB, -2dB, -2.5dB or -3dB.

[0152] As for the specific structure of the bandpass filter 55 , the embodiment of the present application does not limit the structure of the bandpass filter 55 , as long as the corresponding transmission frequency band can be filtered out.

[0153] For one possible implementation, see Figure 14 , Figure 14 This is a schematic diagram of the structure of a bandpass filter provided in an embodiment of the present application. Figure 14 As shown, the bandpass filter 55 includes a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a fourth inductor L4, a fifth inductor L5, a sixth inductor L6 and a seventh inductor L7; the first end of the fourth capacitor C4, the first end of the fifth inductor L5 and the first end of the fourth inductor L4 are electrically connected to the receiving antenna.

[0154] It is understood that, since a bandpass filter 55 can be provided on the MIMO PRX channel and / or the MIMO DRX channel, when the bandpass filter 55 is provided on the MIMO PRX channel, the first end of the fourth capacitor C4, the first end of the fifth inductor L5, and the first end of the fourth inductor L4 are electrically connected to the MIMO main receive antenna 5113; and when the bandpass filter 55 is provided on the MIMO DRX channel, the first end of the fourth capacitor C4, the first end of the fifth inductor L5, and the first end of the fourth inductor L4 are electrically connected to the MIMO diversity receive antenna 5114. The following contents are the same and are not repeated here.

[0155] The second end of the fourth inductor L4 is grounded, the second end of the fourth capacitor C4, the second end of the fifth inductor L5, the first end of the sixth inductor L6, and the first end of the seventh inductor L7 are all electrically connected to the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is electrically connected to the first end of the sixth capacitor C6, the second end of the sixth inductor L6 is grounded, and the second end of the seventh inductor L7 and the second end of the sixth capacitor C6 are both electrically connected to the node.

[0156] It is understood that, since a bandpass filter 55 may be provided on the MIMO PRX channel and / or the MIMO DRX channel, when the bandpass filter 55 is provided on the MIMO PRX channel, the second end of the seventh inductor L7 and the second end of the sixth capacitor C6 are both electrically connected to the first node; and when the bandpass filter 55 is provided on the MIMO DRX channel, the second end of the seventh inductor L7 and the second end of the sixth capacitor C6 are both electrically connected to the second node. The following contents are the same and are not repeated here.

[0157] For one possible implementation, see Figure 15 , Figure 15 This is a structural diagram of another bandpass filter provided in an embodiment of the present application. Figure 15 As shown, the bandpass filter 55 includes a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a fourth inductor L4, a fifth inductor L5, a sixth inductor L6, a seventh inductor L7 and an eighth inductor L8; the first end of the fourth capacitor C4, the first end of the fifth inductor L5 and the first end of the fourth inductor L4 are electrically connected to the receiving antenna, the second end of the fourth inductor L4 is grounded, the second end of the fourth capacitor C4, the second end of the fifth inductor L5 and the first end of the sixth inductor L6 are all electrically connected to the first end of the seventh inductor L7, the second end of the sixth inductor L6 is electrically connected to the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is grounded, the second end of the seventh inductor L7 is electrically connected to the first end of the sixth capacitor C6 and the first end of the seventh capacitor C7, the second end of the sixth capacitor C6 is grounded, the second end of the seventh capacitor C7 and the first end of the eighth inductor L8 are both electrically connected to the node, and the second end of the eighth inductor L8 is grounded.

[0158] For one possible implementation, see Figure 16 , Figure 16 This is a structural diagram of another bandpass filter provided in an embodiment of the present application. Figure 16As shown, the pass filter 55 includes a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a fourth inductor L4, a fifth inductor L5, a sixth inductor L6, a seventh inductor L7 and an eighth inductor L8; the first end of the fourth capacitor C4, the first end of the fifth inductor L5 and the first end of the fourth inductor L4 are electrically connected to the receiving antenna, the second end of the fourth inductor L4 is grounded, the second end of the fourth capacitor C4, the second end of the fifth inductor L5 and the first end of the sixth inductor L6 are all electrically connected to the first end of the seventh inductor L7, the second end of the sixth inductor L6 is electrically connected to the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is grounded, the second end of the seventh inductor L7 is electrically connected to the first end of the sixth capacitor C6 and the first end of the seventh capacitor C7, the second end of the sixth capacitor C6 is grounded, the second end of the seventh capacitor C7 and the first end of the eighth inductor L8 are both electrically connected to the node, the second end of the eighth inductor L8 is grounded, and the eighth capacitor C8 is connected in parallel with the seventh inductor L7.

[0159] Of course, the bandpass filter 55 can also be other forms of LC filters, or the bandpass filter 55 can also be an integrated device filter, which makes the structure of the bandpass filter 55 more diversified. Those skilled in the art can flexibly select different bandpass filters 55 according to actual needs.

[0160] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication device, characterized in that: Applied to electronic devices, including: antenna modules and communication circuits; The antenna module at least includes: a receiving antenna; The communication circuit at least comprises: a radio frequency front-end receiving unit, a radio frequency integrated circuit and a control unit; the radio frequency front-end receiving unit at least comprises: a switch module and a filter module, the filter module comprises a plurality of filters; the receiving antenna, the radio frequency integrated circuit and the first end of the switch module are coupled to a node, the second end of the switch module is respectively electrically connected to the first ends of the plurality of filters, the second ends of the plurality of filters are grounded, and the control unit is respectively electrically connected to the radio frequency integrated circuit and the control end of the switch module; The radio frequency integrated circuit is used to determine the current receiving frequency in the radio frequency signal received by the receiving antenna; The control unit is used to determine the target filter in the filtering module according to the current receiving frequency and the pre-saved target corresponding relationship, so as to control the switch module to turn on the target filter, wherein the electronic device supports multiple receiving frequency bands and multiple transmitting frequency bands corresponding to the multiple receiving frequency bands, each of the receiving frequency bands is divided into at least two receiving sub-frequency bands, each of the transmitting frequency bands is divided into at least two transmitting sub-frequency bands, each of the receiving sub-frequency bands corresponds to one transmitting sub-frequency band, and each of the transmitting sub-frequency bands corresponds to one filter; the target corresponding relationship refers to the corresponding relationship between the multiple receiving sub-frequency bands, the multiple transmitting sub-frequency bands and the multiple filters; The turned-on target filter is used to suppress the transmitting sub-frequency band corresponding to the receiving sub-frequency band where the current receiving frequency is located.

2. The communication device according to claim 1, characterized in that The multiple receiving frequency bands supported by the electronic device and the transmitting frequency bands corresponding to the receiving frequency bands include a first receiving frequency band and a first transmitting frequency band corresponding to the first receiving frequency band, and a second receiving frequency band and a second transmitting frequency band corresponding to the second receiving frequency band; When the first transmission frequency band and the second transmission frequency band at least partially overlap, the overlapping portion of the first transmission frequency band and the second transmission frequency band shares at least one of the filters.

3. The communication device according to claim 1, characterized in that The receiving antenna includes a MIMO main set receiving antenna, the MIMO main set receiving antenna, the MIMO main set receiving end of the radio frequency integrated circuit and the first end of the switch module are coupled to the first node, and the radio frequency front-end receiving unit includes a MIMO main set radio frequency front-end receiving unit, and the MIMO main set radio frequency front-end receiving unit at least includes: the switch module and the filtering module.

4. The communication device according to any one of claims 1 to 3, characterized in that: The receiving antenna includes a MIMO diversity receiving antenna, the MIMO diversity receiving antenna, the MIMO diversity receiving end of the radio frequency integrated circuit and the first end of the switch module are coupled to the second node, the radio frequency front-end receiving unit includes a MIMO diversity radio frequency front-end receiving unit, and the MIMO diversity radio frequency front-end receiving unit at least includes: the switch module and the filtering module.

5. The communication device according to claim 1, characterized in that: The filter comprises a first capacitor, a second capacitor, a first inductor and a second inductor; The first end of the first capacitor and the first end of the second inductor are both electrically connected to the second end of the switch module, the second end of the first capacitor is electrically connected to the first end of the first inductor, the second end of the second inductor is electrically connected to the first end of the second capacitor, and the second end of the first inductor and the second end of the second capacitor are both grounded.

6. The communication device according to claim 5, characterized in that: The filter further includes a third capacitor, the third capacitor is electrically connected to the second end of the switch module, and the second end of the third capacitor is electrically connected to the second end of the second inductor and the first end of the second capacitor; or, The filter further includes a third inductor, a first end of the third inductor is electrically connected to the second end of the second inductor and the first end of the second capacitor, and a second end of the third inductor is grounded; or, The filter also includes a third capacitor and a third inductor, the third capacitor is electrically connected to the second end of the switch module, the second end of the third capacitor is electrically connected to the second end of the second inductor, the first end of the second capacitor and the first end of the third inductor, and the second end of the third inductor is grounded.

7. The communication device according to claim 1, characterized in that: The communication circuit also includes a bandpass filter located between the node and the receiving antenna.

8. The communication device according to claim 7, characterized in that: The insertion loss of the bandpass filter in the receiving band is less than or equal to -1dB and greater than or equal to -3dB, and the suppression of emission is greater than 20dB.

9. The communication device according to claim 7 or 8, characterized in that: The bandpass filter comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a fourth inductor, a fifth inductor, a sixth inductor and a seventh inductor; The first end of the fourth capacitor, the first end of the fifth inductor and the first end of the fourth inductor are electrically connected to the receiving antenna, the second end of the fourth inductor is grounded, the second end of the fourth capacitor, the second end of the fifth inductor, the first end of the sixth inductor and the first end of the seventh inductor are all electrically connected to the first end of the fifth capacitor, the second end of the fifth capacitor is electrically connected to the first end of the sixth capacitor, the second end of the sixth inductor is grounded, and the second end of the seventh inductor and the second end of the sixth capacitor are both electrically connected to the node.

10. The communication device according to claim 7 or 8, characterized in that: The bandpass filter comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a fourth inductor, a fifth inductor, a sixth inductor, a seventh inductor and an eighth inductor; The first end of the fourth capacitor, the first end of the fifth inductor and the first end of the fourth inductor are electrically connected to the receiving antenna, the second end of the fourth inductor is grounded, the second end of the fourth capacitor, the second end of the fifth inductor and the first end of the sixth inductor are all electrically connected to the first end of the seventh inductor, the second end of the sixth inductor is electrically connected to the first end of the fifth capacitor, the second end of the fifth capacitor is grounded, the second end of the seventh inductor is electrically connected to the first end of the sixth capacitor and the first end of the seventh capacitor, the second end of the sixth capacitor is grounded, the second end of the seventh capacitor and the first end of the eighth inductor are both electrically connected to the node, and the second end of the eighth inductor is grounded.

11. The communication device according to claim 10, characterized in that: The bandpass filter further includes an eighth capacitor connected in parallel with the seventh inductor.

12. The communication device according to claim 1, characterized in that: The RF front-end receiving unit further includes: a low noise amplifier located between the node and the RF integrated circuit.

13. The communication device according to claim 4, characterized in that: The antenna module also includes: a main set transmitting and receiving shared antenna and a diversity transmitting and receiving shared antenna; The communication circuit further comprises: a radio frequency front end main diversity transceiver unit, the radio frequency front end main diversity transceiver unit comprising: a radio frequency front end main diversity transceiver subunit, a radio frequency front end diversity receiving subunit and a double-pole double-throw switch; The first end of the double-pole double-throw switch is electrically connected to the main set transceiver shared antenna, the second end of the double-pole double-throw switch is electrically connected to the diversity transceiver shared antenna, the third end of the double-pole double-throw switch is electrically connected to the first end of the RF front-end main set transceiver subunit, and the fourth end of the double-pole double-throw switch is electrically connected to the first end of the RF front-end diversity receiving subunit; The second end of the RF front-end main transceiver subunit is electrically connected to the RF transmitting end of the RF integrated circuit, the third end of the RF front-end main transceiver subunit is electrically connected to the main receiving end of the RF integrated circuit, and the second end of the RF front-end diversity receiving subunit is electrically connected to the diversity receiving end of the RF integrated circuit.

14. The communication device according to claim 1, characterized in that: The switch module includes a single-pole multi-throw switch.

15. An electronic device, characterized in that: A communication device comprising any one of claims 1-14.

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