Radio frequency front-end module, wireless communication circuit, chip and electronic equipment

Abstract

The utility model relates to the technical field of radio frequency transceiving circuits, in particular to a radio frequency front-end module, a wireless communication circuit, a chip and electronic equipment. The radio frequency front-end module comprises a first amplifier, a first switch and a first filter; wherein the first end of the first amplifier is connected with at least one transmitting end of a radio frequency integrated module in a wireless communication circuit where the radio frequency front-end module is located, and the second end of the first amplifier is connected with the first end of the first switch; the first switch further comprises a second end, and the second end of the first switch is connected with the first end of the first filter; the first filter is a single-input single-output multi-passband filter, and the second end of the first filter is connected with an antenna module in a wireless communication circuit where the radio frequency front-end module is located. The radio frequency front-end circuit can ensure simultaneous transceiving of multi-band signals and improve the bandwidth of a single channel, thereby greatly improving the efficiency of uplink and downlink data transmission.

Description

Technical Field

[0001] The present application relates to the technical field of radio frequency transceiver circuits, and in particular to a radio frequency front-end module, a wireless communication circuit, a chip and an electronic device. Background Art

[0002] The RF front end is a core component of wireless communication circuits and is crucial to the wireless communication performance of electronic devices. With the development of communication technology, the communication bandwidth and transmission rate requirements of electronic devices are getting higher and higher. An electronic device needs to support multiple frequency bands. The increase in frequency bands directly leads to an increase in the complexity of RF front-end design, which in turn leads to an increase in the number of required working components and a further increase in costs.

[0003] Therefore, under the premise of supporting multiple communication frequency bands, how to reduce the complexity of the RF front-end circuit, support higher communication bandwidth capabilities, and more efficiently utilize spectrum resources is an urgent problem that needs to be solved. Utility Model Content

[0004] The embodiments of the present application provide a radio frequency front-end module, a wireless communication circuit, a chip and an electronic device, which are used to reduce the complexity of the radio frequency front-end, and can expand the communication bandwidth and improve the communication efficiency.

[0005] In a first aspect, the present application provides a radio frequency front-end module, which includes a first amplifier, a first switch and a first filter; wherein the first end of the first amplifier is connected to at least one transmitting end of a radio frequency integrated module in a wireless communication circuit where the radio frequency front-end module is located, and the second end of the first amplifier is connected to the first end of the first switch; the first switch also includes a second end, wherein the second end of the first switch is connected to the first end of the first filter; the first filter is a single-input and single-output multi-passband filter, and the second end of the first filter is connected to the antenna module in the wireless communication circuit where the radio frequency front-end module is located.

[0006] According to the embodiment of the present application, the single-input single-output multi-passband filter allows signals of different frequency bands to pass through at the same time, and only one connection port needs to be set between the single-input single-output multi-passband filter and the first switch. In this way, the transceiver channels of different frequency bands can be merged into one channel, and the channel can support the transceiver of signals of multiple frequency bands at the same time, which can ensure that the transceiver of signals of multiple frequency bands can work simultaneously. In addition, by merging channels, the devices required for the channels of different frequency bands can be merged, thereby reducing the circuit cost, and the bandwidth of a single channel can be increased, thereby greatly improving the uplink and downlink data transmission rates.

[0007] In some embodiments of the first aspect above, the first filter includes at least one of a dual-passband filter, a triple-passband filter, and a quad-passband filter.

[0008] In this way, one channel can transmit at least two different frequency band signals through one switch and using the same transmission channel, thereby achieving simultaneous transmission of signals in different frequency bands, thereby improving communication efficiency.

[0009] In some embodiments of the first aspect above, the RF front-end module also includes a second switch, and the first filter is connected to the antenna module through the second switch; wherein the first end of the second switch is connected to the antenna module, and the second end of the second switch is connected to the second end of the first filter.

[0010] In this way, the passage between the first filter and the antenna module can be connected and controlled by the second switch, thereby realizing the conduction or disconnection of the transceiver channel.

[0011] In some embodiments of the first aspect above, the RF front-end module also includes a second amplifier, the first switch also includes a third end, the third end of the first switch is connected to the first end of the second amplifier, and the second end of the second amplifier is connected to at least one receiving end of the RF integrated module in the wireless communication circuit where the RF front-end module is located.

[0012] In this way, setting the second amplifier can enable the first filter to obtain the signal of the first frequency band and the signal of the second frequency band from the first received signal, thereby achieving simultaneous reception of signals of different frequency bands.

[0013] In some embodiments of the first aspect above, the RF front-end module also includes a third switch, and the first switch is connected to the second amplifier through the third switch; wherein the first end of the third switch is connected to the third end of the first switch, and the second end of the third switch is connected to the first end of the second amplifier.

[0014] In this way, the path between the first switch and the second amplifier can be connected and controlled by the third switch to achieve the conduction or disconnection of the receiving channel.

[0015] In some embodiments of the first aspect above, the RF front-end module also includes a third amplifier, a fourth switch, and a second filter; wherein the first end of the third amplifier is connected to at least one transmitting end of the RF integrated module in the wireless communication circuit where the RF front-end module is located, and the second end of the third amplifier is connected to the first end of the fourth switch; the fourth switch also includes a second end, wherein the second end of the fourth switch is connected to the first end of the second filter; the second filter is a single-passband filter, and the second end of the second filter is connected to the antenna module in the wireless communication circuit where the RF front-end module is located.

[0016] In this way, during the signal transmission and reception stages, the first filter and the second filter can work simultaneously, that is, the transmission and reception of multiple frequency band signals can be performed simultaneously, which greatly improves the transmission bandwidth and communication efficiency.

[0017] In some embodiments of the first aspect above, the second filter and the antenna module are connected via a second switch, the second switch further includes a third end, and the third end of the second switch is connected to the second end of the second filter.

[0018] In this way, the passage between the second filter and the antenna module can be connected and controlled by the second switch, thereby realizing the conduction or disconnection of the transceiver channel.

[0019] In some embodiments of the first aspect above, the RF front-end module also includes a third filter, and the first switch also includes a fourth end; wherein the third filter is a single-input single-output multi-passband filter, the fourth end of the first switch is connected to the first end of the third filter, and the second end of the third filter is connected to the antenna module in the wireless communication circuit where the RF front-end module is located.

[0020] It can be understood that the third filter and the first filter can both receive and transmit signals in different frequency bands at the same time. By setting the third filter on the basis of the first filter, the communication bandwidth can be further expanded and the communication receiving and transmitting efficiency can be improved.

[0021] In some embodiments of the first aspect above, the third filter of the RF front-end module and the antenna module are connected through a second switch, and the second switch also includes a fourth end, and the fourth end of the second switch is connected to the second end of the third filter.

[0022] In this way, the passage between the third filter and the antenna module can be connected and controlled by the second switch, thereby realizing the conduction or disconnection of the transceiver channel.

[0023] In a second aspect, an embodiment of the present application provides a wireless communication circuit, which includes a radio frequency integrated module, the radio frequency front-end module of the above-mentioned first aspect, and an antenna module; wherein the radio frequency integrated module includes at least one transmitting end and at least one receiving end, and is connected to the radio frequency front-end module through the transmitting end and the receiving end; the radio frequency front-end module is connected to the antenna module.

[0024] In some embodiments of the second aspect above, the wireless communication circuit further includes a modulation and demodulation module, and the radio frequency integrated module further includes a processing end, and the processing end is connected to the modulation and demodulation module.

[0025] In a third aspect, an embodiment of the present application provides a chip, the chip includes a wireless communication circuit, the wireless communication circuit includes a radio frequency integrated module, the radio frequency front-end module of the above-mentioned first aspect, and an antenna module; wherein the radio frequency integrated module includes at least one transmitting end and at least one receiving end, and is connected to the radio frequency front-end module through the transmitting end and the receiving end; the radio frequency front-end module is connected to the antenna module.

[0026] In a fourth aspect, an embodiment of the present application provides an electronic device, which includes a wireless communication circuit, the wireless communication circuit includes a radio frequency integrated module, the radio frequency front-end module of the above-mentioned first aspect, and an antenna module; wherein the radio frequency integrated module includes at least one transmitting end and at least one receiving end, and is connected to the radio frequency front-end module through the transmitting end and the receiving end; the radio frequency front-end module is connected to the antenna module.

[0027] The beneficial effects of the second to fourth aspects mentioned above can be referred to the relevant descriptions in the first aspect and various embodiments of the first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present application, the drawings used in the description of the implementation methods are briefly introduced below.

[0029] Figure 1 According to some embodiments of the present application, a schematic diagram of the structure of a mobile phone 10 is shown;

[0030] Figure 2A According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200 is shown;

[0031] Figure 2B According to some embodiments of the present application, it is shown Figure 2A Specific circuit structure diagram;

[0032] Figure 3A According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200' is shown;

[0033] Figure 3B According to some embodiments of the present application, it is shown Figure 3A Specific circuit structure diagram;

[0034] Figure 3C According to some embodiments of the present application, a circuit structure diagram of a wireless communication module 200" is shown;

[0035] Figure 4 According to some embodiments of the present application, a circuit structure diagram of a radio frequency front-end module 230a is shown;

[0036] Figure 5A According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200a is shown;

[0037] Figure 5B According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200b is shown;

[0038] Figure 5CAccording to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200c is shown;

[0039] Fig. 6A According to some embodiments of the present application, a schematic diagram of the communication frequency band before and after the first circuit improvement is shown;

[0040] Figure 6B According to some embodiments of the present application, a schematic diagram of the communication frequency band before and after the improvement of the second circuit is shown;

[0041] Figure 6C According to some embodiments of the present application, a schematic diagram of the communication frequency band before and after the third circuit improvement is shown;

[0042] Fig. 7A According to some embodiments of the present application, another circuit structure schematic diagram of a radio frequency front-end module 230a is shown;

[0043] Figure 7B According to some embodiments of the present application, a circuit structure diagram of a radio frequency front-end module 230b is shown;

[0044] Figure 7C According to some embodiments of the present application, a circuit structure diagram of a radio frequency front-end module 230c is shown;

[0045] Fig.7D According to some embodiments of the present application, a circuit structure diagram of a radio frequency front-end module 230d is shown. DETAILED DESCRIPTION

[0046] The illustrative embodiments of the present application include, but are not limited to, radio frequency front-end modules, wireless communication circuits, chips, and electronic devices.

[0047] At present, most electronic devices use duplex communication technology to achieve two-way communication with other devices. Duplex communication technology includes frequency division duplexing (FDD) and time division duplexing (TDD). In order to achieve frequency division duplexing and time division duplexing, the RF front end is required to set a pair of transmitting channels and receiving channels for each working frequency band to realize the transmission and reception of RF signals in each working frequency band.

[0048] It should be understood that the RF front-end module provided in the embodiment of the present application can be applied to any electronic device including one that can realize wireless communication function. Among them, electronic devices include but are not limited to any communication electronic devices such as mobile phones, tablet computers, computers, watches, wearable devices, augmented reality (AR) devices, etc. The embodiment of the present application does not limit the type and form of electronic devices. For ease of understanding, the following description is taken as an example of a mobile phone.

[0049] like Figure 1 The mobile phone 10 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 200, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0050] It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the mobile phone 10. In other embodiments of the present application, the mobile phone 10 may include more or fewer components than shown in the figure, or combine some components, or separate some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0051] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0052] The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0053] In some embodiments, the processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0054] The charging management module 140 is used to receive charging input from a charger.

[0055] The power management module 141 is used to connect the battery 142 , the charging management module 140 and the processor 110 .

[0056] The wireless communication function of the mobile phone 10 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 200, the modem processor and the baseband processor.

[0057] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in mobile phone 10 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization rate of the antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0058] The mobile communication module 150 can provide wireless communication solutions including 2G / 3G / 4G / 5G etc. applied on the mobile phone 10 .

[0059] The modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110 and be set in the same device as the mobile communication module 150 or other functional modules.

[0060] The wireless communication module 200 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the mobile phone 10. The wireless communication module 200 can be one or more devices integrating at least one communication processing module. The wireless communication module 200 receives electromagnetic waves via the antenna 2, modulates the frequency of the electromagnetic wave signal and performs filtering, and sends the processed signal to the processor 110. The wireless communication module 200 can also receive the signal to be sent from the processor 110, modulate the frequency of it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

[0061] In some embodiments, the antenna 1 of the mobile phone 10 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 200, so that the mobile phone 10 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology. The GNSS may include a global positioning system (GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS) and / or a satellite based augmentation system (SBAS).

[0062] The mobile phone 10 implements the display function through a GPU, a display screen 194, and an application processor.

[0063] Display screen 194 is used to display images, videos, etc.

[0064] The mobile phone 10 can realize the shooting function through ISP, camera 193, video codec, GPU, display screen 194 and application processor.

[0065] The camera 193 is used to capture still images or videos.

[0066] The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the mobile phone 10.

[0067] The internal memory 121 may be used to store computer executable program codes, wherein the executable program codes include instructions.

[0068] The mobile phone 10 can implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor.

[0069] The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals.

[0070] The speaker 170A, also called a "horn", is used to convert audio electrical signals into sound signals.

[0071] The receiver 170B, also called a "handset", is used to convert audio electrical signals into sound signals.

[0072] Microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals.

[0073] The earphone jack 170D is used to connect a wired earphone.

[0074] Buttons 190 include a power button, a volume button, and the like.

[0075] Motor 191 can generate vibration prompts.

[0076] Indicator 192 may be an indicator light, which may be used to indicate charging status, power changes, messages, missed calls, notifications, etc.

[0077] The SIM card interface 195 is used to connect a SIM card.

[0078] Specifically, Figure 2A According to some embodiments, a block diagram of a wireless communication circuit 200 is shown. The wireless communication circuit 200 includes a modem 210, a radio frequency integrated module 220, a radio frequency front-end module 230, and a radio frequency front-end module 240. The radio frequency integrated module 220 is connected to the modem 210, the radio frequency front-end module 230, and the radio frequency front-end module 240, respectively. The radio frequency front-end module 230 and the radio frequency front-end module 240 are connected to the antenna 21 and the antenna 22, respectively. The radio frequency front-end module 230 and the radio frequency front-end module 240 can respectively perform the work of sending and receiving radio frequency signals.

[0079] Figure 2BAccording to some embodiments, a circuit structure diagram of a wireless communication circuit 200 is shown. The wireless communication circuit 200 includes a radio frequency front-end module 230 and a radio frequency front-end module 240. In each radio frequency front-end module, the signal transmission phase and the reception phase may be performed simultaneously or not simultaneously. During the transmission phase, of the channels controlled by the same transmission switch, at most only one channel (one frequency band) can work at the same time, and multiple channels (multiple frequency bands) cannot work at the same time. For example, at time t1, the radio frequency front-end module 230 is in the signal transmission state, then only one path can be turned on in a transmission switch, so that the channel corresponding to the path transmits the signal, while other transmission channels are not turned on.

[0080] Specifically, the RF integrated module 220 includes two groups of transceiver ports, such as the first group of transmitters TX1_1 and TX1_2, the first group of receivers RX1_1, RX2_1 and RX3_1, and the second group of transmitters TX2_1 and TX2_2, the second group of receivers RX1_2, RX2_2 and RX3_2.

[0081] The specific structure of the RF front-end module 230 is described below. Figure 2B As shown, the RF front-end module 230 includes an amplifier 2301, an amplifier 2302, a switch 2303, a switch 2304, a single passband filter 2305, a single passband filter 2306, a single passband filter 2307, a switch 2308, a switch 2309, a switch 2310, an amplifier 2311, an amplifier 2312 and an amplifier 2313.

[0082] The RF front-end module 230 is connected to the transmitting terminals TX1_1 and TX1_2, and the receiving terminals RX1_1, RX2_1, and RX3_1. The input terminal MB_PA_IN_1 of the amplifier 2301 is connected to the transmitting port TX1_1 of the RF integrated module 220, and transmits a frequency signal of a lower frequency band, such as the B34 or B39 frequency band. The input terminal HB_PA_IN_1 of the amplifier 2302 is connected to the transmitting terminal TX1_2 of the RF integrated module 220, and transmits a frequency signal of a high frequency band, such as the B41 frequency band. The power supply terminal of the amplifier 2301 and the power supply terminal of the amplifier 2302 are both connected to the power supply voltage VCC. The output end of the amplifier 2301 is connected to the fixed end S10 of the switch 2303, the single passband filter 2305, the single passband filter 2306, the switch 2309 and the switch 2310 are respectively connected to the switching ends S11, S12, S13 and S14 of the switch 2303, and the single passband filter 2305, the single passband filter 2306 and the single passband filter 2307 are respectively connected to the ports X11, X12 and X13 of the switch 2308, and the output end of the amplifier 2302 is connected to the switch 2 The fixed end S20 of switch 2304, one end of the single passband filter 2307 and the amplifier 2313 are connected to the switching ends S21 and S22 of switch 2304 respectively, the input end of amplifier 2311 is connected to switch 2309, the input end of amplifier 2312 is connected to switch 2310, and the output ends of amplifier 2311, amplifier 2312 and amplifier 2313 are connected to the receiving ports RX1_1, RX2_1 and RX3_1 of RF integrated module 220 respectively. Antenna 21 is connected to the fixed end X10 of switch 2308. Switch 2308 may include different ports inside, and different signals may be collected in the same internal port (fixed end X10) after entering through different ports, and the internal port transmits signals to antenna 21; switch 2308 may also be provided with multiple output ends to connect other antennas.

[0083] The specific structure of the RF front-end module 240 is described below. Figure 2B As shown, the RF front-end module 240 includes an amplifier 2401, an amplifier 2402, a switch 2403, a switch 2404, a single passband filter 2405, a single passband filter 2406, a single passband filter 2407, a switch 2408, a switch 2409, a switch 2410, an amplifier 2411, an amplifier 2412 and an amplifier 2413.

[0084] Since the RF front-end module 240 is configured as a circuit structure similar to that of the RF front-end module 230, the connection relationship in the circuit structure of the RF front-end module 240 can refer to the relevant description of the RF front-end module 230, and will not be repeated. The difference between the RF front-end module 240 and the RF front-end module 230 is that the two are connected to different ports of the RF integrated module 220, and the RF front-end module 240 is connected to the transmitting terminals TX2_1 and TX2_2, and the receiving terminals RX1_2, RX2_2, and RX3_2.

[0085] For the convenience of description, the signal transceiver working principle in the circuit is introduced below by taking the RF front-end module 230 as an example, wherein the signal frequency bands are taken as the B34 frequency band, the B39 frequency band and the B41 frequency band. The working principle corresponding to the RF front-end module 240 is similar to that of the RF front-end module 230, and will not be repeated here.

[0086] It is understandable that Figure 2A and 2B As shown, for the RF front-end module 230, three transmission channels can be formed, specifically including:

[0087] Transmitting channel 1: transmitting port TX1_1, amplifier 2301, switch 2303, single passband filter 2305, switch 2308 and antenna 21. When two ports S10 and S11 of switch 2303 are connected, and two ports X11 and X10 of switch 2308 are connected, transmitting channel 1 is in the on state, otherwise transmitting channel 1 is in the off state.

[0088] Transmitting channel 2: transmitting port TX1_1, amplifier 2301, switch 2303, single passband filter 2306, switch 2308 and antenna 21. When the two ports S10 and S12 of switch 2303 are connected, and the two ports X12 and X10 of switch 2308 are connected, transmitting channel 2 is in the on state, otherwise transmitting channel 2 is in the off state.

[0089] Transmitting channel 3: transmitting port TX1_2, amplifier 2302, switch 2304, single passband filter 2307, switch 2308, antenna 21. When the two ports S20 and S21 of switch 2304 are connected, and the two ports X13 and X10 of switch 2308 are connected, transmitting channel 3 is in the on state, otherwise transmitting channel 3 is in the off state.

[0090] Specifically, in the transmission phase of the RF front-end module 230: when operating in the B34 frequency band, when S10 and S11 are turned on, the transmission channel 1 is turned on, and the RF front-end module 230 transmits the signal of the B34 frequency band to the antenna 21. Since the S10 end in the switch 2303 cannot be connected to multiple ports at the same time, the single-passband filter 2306 cannot be turned on at this time. Therefore, the B39 frequency band corresponding to the single-passband filter 2306 cannot transmit signals. Similarly, when the RF front-end module 230 operates in the B39 frequency band, when S10 and S12 are turned on, the transmission channel 2 is turned on, and the RF front-end module 230 transmits the signal of the B39 frequency band to the antenna 21. At this time, the B34 frequency band corresponding to the single-passband filter 2305 cannot transmit signals. In addition, since the transmission channel 3 uses a single switch 2304, its corresponding transmission frequency band (for example, the B41 frequency band) can be transmitted simultaneously with the B34 frequency band, and can also be transmitted simultaneously with the B39 frequency band, but cannot be transmitted simultaneously with both the B34 and B39 frequency bands.

[0091] Based on the above principles, it can be understood that Figure 2B The wireless communication circuit 200 includes a RF front-end module 230 and a RF front-end module 240. Therefore, the wireless communication circuit 200 can support two B34 transmission channels working at the same time, or two B39 transmission channels working at the same time, or can support one B34 transmission channel and one B39 transmission channel working at the same time, but cannot support two B34 transmission channels and two B39 transmission channels working at the same time.

[0092] It is understandable that in some other embodiments, for signal transmission in other frequency bands, among the single-passband filters connected to the same transmitting switch, only one of them can be turned on at the same time to transmit the signal of the frequency band corresponding to the single-passband filter, and other frequency bands cannot be turned on, resulting in a low signal receiving and transmitting capability of the RF technology.

[0093] Figure 3A and Figure 3B According to some embodiments, a structural block diagram and a specific circuit structure diagram of another wireless communication circuit 200' are shown. Compared with the above-mentioned wireless communication circuit 200, the wireless communication circuit 200' combines the wires connecting the two single-passband filters to the switch 2308 into one, thereby saving one wiring, but in the signal transmission and reception stage, the working principle of its transmission and reception channels is essentially the same as that of the wireless communication circuit 200, that is, the wireless communication circuit 200' also does not realize the function of simultaneously transmitting and receiving multi-band signals in one transmission switch.

[0094] The wireless communication circuit 200' includes a modem 210, a radio frequency integrated module 220, and radio frequency front-end modules 230' and 240'. The wireless communication circuit 200' is similar in structure to the wireless communication circuit 200, and the difference between the two is that: Figure 3B As shown in the dotted boxes inside the RF front-end modules 230' and 240', the single passband filter 2305' and the single passband filter 2306' in the RF front-end module 230' are connected to the same end of the switch 2308, rather than different ports, so that two frequency bands (such as the B34 frequency band and the B39 frequency band) can be connected to the switch 2308 using one wire, but as shown in the dotted boxes above, the single passband filter 2305' and the single passband filter 2306' are still controlled by different ports in the switch 2303, respectively. Therefore, in the RF front-end module 230', the B34 frequency band and the B39 frequency band cannot transmit signals at the same time. The RF front-end module 240' has a similar structure and the same working principle as the RF front-end module 230', that is, the single passband filter 2405' and the single passband filter 2406' are still controlled by different ports in the switch 2403, respectively, and will not be repeated. Therefore, the working mode that can be realized by the wireless communication circuit 200 ′ is the same as that of the wireless communication circuit 200 , which results in a lower signal transceiver capability of the radio frequency technology part and a larger size of the electronic device.

[0095] To support the simultaneous operation of two B34 and two B39 frequency bands, it can be achieved through carrier aggregation (CA) or supplementary up link (SUL) and other technologies, but additional chips are needed. Figure 3C Another wireless communication circuit 200' is shown in some embodiments. The difference between it and 200' is that an additional radio frequency integrated circuit (RFIC) is added, that is, a radio frequency integrated module 220 and a communication interface between the radio frequency integrated module 220 and the modem 210 are added, and a radio frequency front-end module 230' and a radio frequency front-end module 240', as well as an antenna 21 and an antenna 22 are added. The specific structure and connection relationship of the radio frequency front-end module 230' and the radio frequency front-end module 240' refer to the above text and will not be repeated. That is to say, although the wireless communication circuit 200" can support simultaneous transmission of more frequency bands, the corresponding control circuit and the electronic devices constituting the circuit are also multiplied, resulting in the circuit area required for the entire communication system being too large and the cost being too high, thereby reducing the chip integration.

[0096] Based on the above scenario, the number of channels supported by the RF transceiver chip at the same time is relatively small. If you want to increase the number of transmission channels working simultaneously, you can only do so by adding additional chips. In other words, each frequency band requires an independent filter and corresponding control circuit, which results in an excessively large circuit area and high cost.

[0097] In order to solve the above problems, an embodiment of the present application provides a radio frequency front-end module, which adopts a single-input single-output multi-passband filter. The single-input single-output multi-passband filter allows signals of different frequency bands to pass through at the same time, and only one connection port needs to be set between the single-input single-output multi-passband filter and the transmitting switch. In this way, the transceiver channels of different frequency bands can be merged into one channel, and the channel can support the transmission and reception of signals of multiple frequency bands at the same time, thereby ensuring that the transmission and reception of signals of multiple frequency bands can work simultaneously. Moreover, by merging the channels, the devices required for different frequency band paths can be merged, thereby reducing the circuit cost, and the bandwidth of a single channel can be increased, thereby greatly improving the capacity of uplink and downlink data transmission rates.

[0098] In some embodiments of the present application, the single-input single-output multi-passband filter may refer to at least one of the dual-passband filter, triple-passband filter, and quad-passband filter mentioned in the present application. Among them, the dual-passband filter may be composed of two single-passband filters that can pass signals of different frequencies, the triple-passband filter may be composed of three single-passband filters that can pass signals of different frequencies, and the quad-passband filter may be composed of four single-passband filters that can pass signals of different frequencies. The dual-passband filter, triple-passband filter, and quad-passband filter may also have other structures, which are not limited here.

[0099] In some embodiments of the present application, specifically, Figure 4 It is a circuit structure diagram of a radio frequency front-end module 230a, taking a dual-passband filter as an example, wherein the radio frequency front-end module 230a has a transmitting channel 4, and components of the transmitting channel 4 include: a power amplifier 2301 (an example of the first amplifier of the present application), a transmitting switch 2303 (an example of the first switch of the present application), a dual-passband filter 2314 (an example of the first filter of the present application) and an antenna switch 2308 (an example of the second switch of the present application).

[0100] Specifically, the output end (second end) of the power amplifier 2301 is connected to the transmit fixed end S10 (first end) of the transmit switch 2303, the first end of the dual-passband filter 2314 is connected to the switching end S11 (second end) of the transmit switch 2303, the second end of the dual-passband filter 2314 is connected to the second end X12 of the antenna switch 2308, the dual-passband filter 2314 is connected to the antenna module through the antenna switch 2308, and the first end X10 of the antenna switch 2308 is connected to the antenna module.

[0101] During the signal transmission stage in the transmission channel 4, when the transmission switch 2303 is thrown to the switching end S11 and the transmission fixed end S10, the first end of the dual-passband filter 2314 receives the first RF signal transmitted by the power amplifier 2301, and the first RF signal includes a first transmission signal. The dual-passband filter 2314 is used to obtain the signal of the first frequency band and the signal of the second frequency band from the first transmission signal. The first transmission signal is transmitted to the antenna module connected to X10 via ports X12 and X10 of the antenna switch 2308.

[0102] In the above-mentioned transmission stage, due to the setting of the dual-passband filter 2314, one channel can transmit two different frequency band signals via a transmission switch 2303 using the same transmission channel 4, thereby merging the transmission channels 1 and 2 into one transmission channel 4, which not only expands the transmission bandwidth and improves the communication efficiency, but also reduces the number of electronic components, improves chip integration and reduces costs.

[0103] Specifically, the antenna switch 2308 can control the path between the filter connected thereto and the antenna, thereby realizing the conduction or disconnection of the corresponding transceiver channel.

[0104] In some embodiments of the present application, Figure 4 and Figure 5A As shown, in the signal receiving stage, when the transmitting switch 2303 is thrown to the switching end S11 and the switching end S13 (the third end), the second end of the dual-passband filter 2314 receives the first RF signal transmitted by the antenna 21 via the ports X10 and X12 of the antenna switch 2308, and the first RF signal includes a first received signal. The dual-passband filter 2314 is used to obtain the signal of the first frequency band and the signal of the second frequency band from the first received signal, thereby realizing the simultaneous reception of signals of different frequency bands.

[0105] Figure 5A According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200a is shown. The wireless communication circuit 200a includes a modem 210, a radio frequency integrated module 220, a radio frequency front-end module 230a, a radio frequency front-end module 240a, an antenna 21 (an example of an antenna module of the present application) and an antenna 22. The radio frequency integrated module 220 is respectively connected to the modem 210, the radio frequency front-end module 230a and the radio frequency front-end module 240a, and the radio frequency front-end module 230a and the radio frequency front-end module 240a are respectively connected to the antenna 21 and the antenna 22.

[0106] The specific structure and working principle of the transmission channel 4 of the RF front-end module 230a can refer to the above Figure 4The relevant text of the power amplifier 2301 is not repeated here. The input terminal (first terminal) MB_PA_IN_1 of the power amplifier 2301 is connected to the transmitting terminal TX1_1 of the RF integrated module 220 .

[0107] In addition, if Figure 2B As shown, in addition to the above-mentioned transmission channels 1, 2 and 3, the RF front-end module 230 or 240 can also perform signal reception. Taking the RF front-end module 230 as an example, three receiving channels can be formed, specifically including:

[0108] Receiving channel 1: antenna 21, switch 2308, single passband filter 2305, switch 2303, switch 2309, amplifier 2311, receiving port RX1_1. The two ports X11 and X10 of switch 2308 are connected, the two ports S11 and S13 of switch 2303 are connected, and when switch 2309 is turned on, receiving channel 1 is in the on state, otherwise receiving channel 1 is in the off state.

[0109] Receiving channel 2: antenna 21, switch 2308, single passband filter 2306, switch 2303, switch 2310, amplifier 2312, receiving port RX2_1. The two ports X12 and X10 of switch 2308 are connected, the two ports S12 and S14 of switch 2303 are connected, and when switch 2310 is turned on, receiving channel 2 is in the on state, otherwise receiving channel 2 is in the off state.

[0110] Receiving channel 3: antenna 22, switch 2308, single passband filter 2307, switch 2304, amplifier 2313, receiving port RX3_1. When the two ports X13 and X10 of switch 2308 are connected and the two ports S21 and S22 of switch 2304 are connected, receiving channel 3 is in the on state, otherwise receiving channel 3 is in the off state.

[0111] In the receiving stage of the RF front-end module 230: when the RF front-end module 230 operates in the B34 frequency band, the receiving channel 1 is turned on, and the RF front-end module 230 receives the signal in the B34 frequency band; when the RF front-end module 230 operates in the B39 frequency band, the receiving channel 2 is turned on, and the RF front-end module 230 receives the signal in the B39 frequency band; when the RF front-end module 230 operates in the B41 frequency band, the receiving channel 3 is turned on, and the RF front-end module 230 receives the signal in the B41 frequency band. Figure 3B Therefore, although the signals of the B34 band, the B39 band and the B41 band can be received simultaneously, the three receiving channels use their own receiving switches, low noise amplifiers and receiving ports to receive the signals of their respective frequency bands, which requires more components, larger equipment size and higher cost.

[0112] The RF front-end module provided in this application can also solve the above-mentioned receiving channel problem. Figure 5A As shown, taking the RF front-end module 230a as an example, the RF front-end module 230a also has a receiving channel 4, and the components of the receiving channel 4 include: an antenna 21, an antenna switch 2308, a dual-passband filter 2314, a transmitting switch 2303, a receiving switch 2309 (an example of the third switch of the present application), a low-noise amplifier 2311 (an example of the second amplifier of the present application), and a receiving port RX1_1.

[0113] Specifically, the switching end S13 (third end) of the transmitting switch 2303 is connected to the first end of the low noise amplifier 2311 , and the output end (second end) of the low noise amplifier 2311 is connected to the receiving end RX1_1 of the RF integrated module 220 .

[0114] The transmitting switch 2303 is connected to the low noise amplifier 2311 through the receiving switch 2309, the first end of the receiving switch 2309 is connected to the switching end S13 of the transmitting switch 2303, and the second end of the receiving switch 2309 is connected to the input end (first end) of the low noise amplifier 2311. Specifically, the receiving switch 2309 can control the path between the transmitting switch 2303 and the low noise amplifier 2311 connected thereto, thereby realizing the conduction or disconnection of the corresponding receiving channel.

[0115] In receiving channel 4, two ports X11 and X10 of antenna switch 2308 are connected, two ports S11 and S13 of transmitting switch 2303 are connected, and when receiving switch 2309 is turned on, receiving channel 4 is in the on state, otherwise receiving channel 4 is in the off state.

[0116] Since the dual-passband filter 2314 is used in the receiving channel 4, it is possible to use one receiving channel 4 to receive signals of two frequency bands, so that the receiving channel 1 and the receiving channel 2 can be combined into one receiving channel 4. Figure 5A As shown, Figure 2B In comparison, the switch 2310, the amplifier 2312 and the receiving port RX2_1 connected thereto do not need to be set in the circuit, thereby saving space in the electronic device and reducing the size of the device. These devices can also continue to be used for receiving other frequency bands (not shown) as needed to improve the efficiency of circuit utilization, and their use is not limited here. Therefore, the above-mentioned wireless communication circuit 200a can save receiving devices while improving the transmission efficiency and supporting higher communication bandwidth capabilities, thereby reducing the complexity of the circuit in the communication device and reducing the size and cost of the device.

[0117] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0118] Figure 4 and Figure 5A The RF front-end module 230a in the embodiment also includes a power amplifier 2302 (an example of the third amplifier of the present application), a transmitting switch 2304 (an example of the fourth switch of the present application) and a single-passband filter 2307 (an example of the second filter of the present application). The input end HB_PA_IN_1 (first end) of the power amplifier 2302 is connected to the transmitting end TX1_2 of the RF integrated module 220. The output end (second end) of the power amplifier 2302 is connected to the transmitting fixed end S20 (first end) of the transmitting switch 2304, the first end of the single-passband filter 2307 is connected to the switching end S21 (second end) of the transmitting switch 2304, and the second end of the single-passband filter 2307 is connected to the third end X13 of the antenna switch 2308. The single-passband filter 2307 and the antenna module are connected through the antenna switch 2308.

[0119] In some embodiments of the present application, the RF front-end module 230a also has a transmission channel 5 similar to the above-mentioned transmission channel 3. In the signal transmission stage of the transmission channel 5, when the transmission switch 2304 is thrown to ports S21 and S20, the first end of the single-passband filter 2307 receives the second transmission signal transmitted by the power amplifier 2302, and the single-passband filter 2307 obtains a single-band signal from the second transmission signal, and the second transmission signal is transmitted to the antenna module via ports X13 and X10 of the antenna switch 2308. Similarly, in the signal reception stage, when the transmission switch 2304 is thrown to ports S21 and S22, the second end of the single-passband filter 2307 receives the second reception signal transmitted by the antenna module via ports X10 and X13 of the antenna switch 2308, and the single-passband filter 2307 obtains a single-band signal from the second reception signal. Among them, in the signal transmission and reception stages, the single-passband filter 2307 and the dual-passband filter 2314 can work simultaneously, that is, in the above-mentioned RF front-end module 230a, three frequency band signals can be transmitted and received simultaneously, which greatly improves the transmission bandwidth and communication efficiency.

[0120] In some embodiments of the present application, the RF front-end module 230a further includes a low noise amplifier 2313. The input end of the low noise amplifier 2313 is connected to the port S22 of the transmitting switch 2304, and the output end is connected to the receiving end RX3_1 of the RF integrated module 220 to receive the second receiving signal transmitted by the single passband filter 2307, and the second receiving signal includes a signal of a frequency band. The RF front-end module 230a also has a receiving channel 5 similar to the above-mentioned receiving channel 3, which will not be repeated here.

[0121] In some embodiments of the present application, Figure 5A The RF front-end module 240a has the same structure as the RF front-end module 230a, and includes a power amplifier 2401, a transmit switch 2303, a dual-passband filter 2414, an antenna switch 2408, a power amplifier 2402, a transmit switch 2404, a single-passband filter 2407, a receive switch 2409, a low noise amplifier 2411, and a low noise amplifier 2413. The receive switch 2410 and the low noise amplifier 2412 can be set as needed, please refer to the above text, and will not be repeated here.

[0122] Since the RF front-end module 240a is configured as the same circuit structure as the RF front-end module 230a, the connection relationship can refer to the relevant description of the RF front-end module 230a, which will not be repeated here. The difference between the RF front-end module 240a and the RF front-end module 230a is that the two are connected to different ports of the RF integrated module 220, that is, the input end MB_PA_IN_2 of the power amplifier 2401 is connected to the transmitting end TX2_1 of the RF integrated module 220, the input end HB_PA_IN_2 of the power amplifier 2402 is connected to the transmitting end TX2_2 of the RF integrated module 220, and the output end of the low noise amplifier 2411, the output end of the low noise amplifier 2412 and the output end of the low noise amplifier 2413 are respectively connected to the receiving ends RX1_2, RX2_2 and RX3_2 of the RF integrated module 220. Among them, since the dual-passband filter 2414 merges the receiving channels of two frequency bands, the receiving switch 2410, the low noise amplifier 2412 and its receiving end RX2_2 can be saved and can also continue to be used for receiving other frequency bands as needed to improve circuit utilization efficiency.

[0123] The RF front-end module 240a is the same as the RF front-end module 230a, that is, it can also transmit signals of two frequency bands simultaneously in one transmission channel, or receive signals of two frequency bands simultaneously in one reception channel. For example, the RF front-end module 240a can transmit or receive signals of one B34 and one B39 frequency band simultaneously. Therefore, the wireless communication circuit 200a provided with the RF front-end module 230a and the RF front-end module 240a can support the transmission channels of two B34 frequency bands and two B39 frequency bands to work simultaneously, so that the communication efficiency is greatly improved.

[0124] Figure 5B According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200b is shown. The structure of the wireless communication circuit 200b is basically the same as that of the wireless communication circuit 200a, and the same parts are not repeated. The only difference between the two is that the wireless communication circuit 200b uses a radio frequency integrated module 220 with three sets of transmitting ports and three sets of receiving ports, which has one more set of transmitting ports (transmitting ends TX3_1 and TX3_2) and receiving ports (receiving ends RX1_3, RX2_3, RX3_3) than the wireless communication circuit 200a, that is, the wireless communication circuit 200b can have three sets of transmitting ports (transmitting ends TX3_1 and TX3_2) and receiving ports (receiving ends RX1_3, RX2_3, RX3_3) at the same time. Figure 4 The RF front-end modules shown in the figure can increase the number of frequency bands that can be transmitted and received simultaneously, thereby greatly improving the signal transmission and reception efficiency and greatly reducing the design complexity and cost of the front-end circuit.

[0125] Figure 5C According to some embodiments of the present application, a circuit structure diagram of a wireless communication circuit 200c is shown. Both the wireless communication circuit 200c and the wireless communication circuit 200b use a radio frequency integrated module 220 with three sets of transmitting ports and three sets of receiving ports. Therefore, the radio frequency integrated module 220 can be connected to three radio frequency front-end modules. Figure 5C In the embodiment, the structure of one of the RF front-end modules 230a is arranged similar to Figure 5A The structure of the RF front-end module 230a is the same as that of the RF front-end module 230a, and it is connected to the antenna 21; the other two RF front-end modules 230' and 240' adopt Figure 3B The circuit structure of the RF front-end modules 230' and 240' is set, and the antenna 22 and the antenna 23 are connected respectively. Since the structure and connection relationship of the RF front-end modules 230a, 230' and 240' have been described in the above text, they will not be repeated. Therefore, the wireless communication circuit 200c can combine RF front-end modules that simultaneously transmit and receive different frequency bands, and at least one of the RF front-end modules includes at least one single-input and single-output multi-band filter, so that the signal transmission bandwidth can be widened under different demand scenarios, thereby improving the signal receiving and transmitting capabilities.

[0126] It can be understood that the three sets of transmitting ports and three sets of receiving ports of the RF integrated module 220 can also be connected to other different combinations of RF front-end modules. For example, the RF integrated module 220 can be connected to the RF front-end modules 230a, 240a and 240a in the above embodiment, or the RF integrated module 220 can be connected to the RF front-end modules 230a, 240a and 240 in the above embodiment, or the RF integrated module 220 can be connected to the RF front-end modules 230a, 240a and 240' in the above embodiment, etc. The combination selection and combination order of the three sets of transmitting ports and three sets of receiving ports of the RF integrated module 220 with different RF front-end modules can be changed according to actual conditions, and the RF front-end module including at least one single-input single-output multi-passband filter can also be combined with other RF front-end modules not mentioned in the embodiments of the present application.

[0127] In some other embodiments, the modem 210 can also be connected to two or more RF integrated modules 220, and each RF integrated module 220 can be connected to one, two or more RF front-end modules. The internal structure of the RF front-end module can be set according to the aforementioned embodiments and will not be repeated here.

[0128] It should be noted that the low noise amplifier mentioned in the embodiments of the present application may include a low noise power amplifier (LNA).

[0129] Fig. 6A , Figure 6B and Figure 6C , respectively, shows a comparison diagram of the communication frequency bands of different wireless communication circuits. FIG. 6A to FIG. 6C Corresponding to the left side Figure 2B The wireless communication circuit 200 shown in the figure can simultaneously transmit and receive communication frequency bands, and the right side corresponds to Figure 5A The wireless communication circuit 200a shown is capable of simultaneously transmitting and receiving communication frequency bands.

[0130] like Fig. 6A As shown, the wireless communication circuit 200 can simultaneously transmit and receive two B39 frequency bands (F frequency bands), and the single-channel communication bandwidth is 35MHz. The wireless communication circuit 200a can simultaneously transmit and receive two B34 frequency bands (A frequency bands) on the basis of two B39 frequency bands (F frequency bands), and the single-channel communication bandwidth is increased from 35MHz to 50MHz;

[0131] like Figure 6BAs shown, the wireless communication circuit 200 can simultaneously transmit and receive two B34 frequency bands (A frequency bands), and the single-channel communication bandwidth is 15MHz. The wireless communication circuit 200a can simultaneously transmit and receive two B39 frequency bands (F frequency bands) on the basis of two B34 frequency bands (A frequency bands), and the single-channel communication bandwidth is increased from 15MHz to 50MHz;

[0132] like Fig. 6A As shown, the wireless communication circuit 200 can simultaneously transmit and receive a B39 frequency band (F frequency band) and a B34 frequency band (A frequency band), and the single-channel communication bandwidth is 15MHz and 35MHz respectively. The wireless communication circuit 200a can simultaneously transmit and receive frequency bands based on a B39 frequency band (F frequency band) and a B34 frequency band (A frequency band), and an additional B39 frequency band (F frequency band) and a B34 frequency band (A frequency band), and the single-channel communication bandwidth is increased from 15 or 35MHz to 50MHz.

[0133] Therefore, in the above embodiment, the signal receiving and sending capability of the wireless communication circuit 200a is improved by at least 40%. While saving the receiving and sending channels and the corresponding switches and amplifiers, it can also construct an uplink or downlink cross-band large carrier channel, thereby improving the uplink or downlink data transmission rate, and achieving a low-cost, small-area communication capability improvement.

[0134] The following embodiments give examples of the frequency bands that can be combined in the present application. It should be noted that the number and combination of frequency bands that can be supported in the wireless communication circuit of the present application include but are not limited to the embodiments provided below.

[0135] Combine the following Fig. 7A A first frequency band combination embodiment in a wireless communication circuit is described.

[0136] Fig. 7A The circuit structure diagram of a radio frequency front-end module 230a is shown. The dual-passband filter 2314 can simultaneously perform B34 and B39 frequency band transmission and reception work. Figure 4 In addition, the RF front-end module 230a further includes a single passband filter 2315 , a single passband filter 2316 , a single passband filter 2317 and a single passband filter 2318 .

[0137] The single passband filter 2315 is connected to the switch end S15 of the transmitting switch 2303, and the single passband filter 2317 is connected to the switch end S16 of the transmitting switch 2303. Similarly, the single passband filter 2316 and the single passband filter 2318 are also connected to the switch end (not shown) of the transmitting switch 2303. The single passband filter 2315 and the single passband filter 2316 are both connected to the X14 port of the antenna switch 2308, and the single passband filter 2317 and the single passband filter 2318 are both connected to the X15 port of the antenna switch 2308. The receiving channels corresponding to each filter are similar to the receiving channel settings in the above embodiment, and will not be repeated here.

[0138] Among them, the single passband filter 2307, the single passband filter 2315, the single passband filter 2316, the single passband filter 2317 and the single passband filter 2318 can respectively support the working channels of B41 frequency band transceiver, B1 frequency band transmission, B1 / B66 frequency band reception, B3 frequency band transmission, and B3 frequency band reception, and the RF front-end module 230a can only support the transceiver work of one of the channels at the same time. The dual passband filter 2314 supports the transceiver work of the two frequency bands of B34 and B39, that is, it can perform the transceiver work of the dual frequency bands at the same time, thereby expanding the communication bandwidth and improving the communication transceiver efficiency.

[0139] Combine the following Figure 7B A second frequency band combination embodiment in a wireless communication circuit is described.

[0140] Figure 7B The circuit structure diagram of a radio frequency front-end module 230b is shown, which can simultaneously perform B34 and B39, or B1 and B3 frequency band transmission and reception work. Fig. 7A The repeated structure of the circuit is not repeated. Among them, the RF front-end module 230b replaces the single passband filter 2315 and the single passband filter 2316 in the RF front-end module 230a with a dual passband filter 2319 (an example of the third filter of the present application), which can simultaneously transmit and receive signals in two frequency bands. Among them, the first end of the dual passband filter 2319 is connected to the switching end S15 (the fourth end) of the transmitting switch 2303, and the second end of the dual passband filter 2319 is connected to the antenna module through the X14 port (the fourth end) of the antenna switch 2308.

[0141] The dual passband filter 2319, the single passband filter 2317 and the single passband filter 2318 are all connected to the X14 port of the antenna switch 2308. Specifically, the dual passband filter 2319 can transmit signals of the two frequency bands B1 and B3 at the same time, the single passband filter 2307, the single passband filter 2317 and the single passband filter 2318 can respectively support the working channels of B41 frequency band transceiver, B1 / B66 frequency band reception and B3 frequency band reception, and the dual passband filter 2314 can transmit and receive signals of the two frequency bands B34 and B39 at the same time.

[0142] Combine the following Figure 7C A third frequency band combination embodiment in a wireless communication circuit is described.

[0143] Figure 7C The circuit structure diagram of a radio frequency front-end module 230c is shown, which can simultaneously perform B34 and B39, or B1 and B3, or B1 / B66 and B3 frequency band transmission and reception work. Figure 7B The repeated structure of the circuit is not repeated. Among them, the RF front-end module 230c combines the single passband filter 2317 and the single passband filter 2318 in the RF front-end module 230b into a dual passband filter 2320, which can simultaneously transmit and receive signals of two frequency bands.

[0144] Specifically, the dual passband filter 2319 can simultaneously transmit signals in the B1 and B3 frequency bands, the dual passband filter 2320 can simultaneously receive signals in the B1 and B3 frequency bands or simultaneously receive signals in the B66 and B3 frequency bands, the dual passband filter 2314 can simultaneously transmit and receive signals in the B34 and B39 frequency bands, and the single passband filter 2307 can support the working channel for transmitting and receiving in the B41 frequency band.

[0145] Combine the following Fig.7D A fourth frequency band combination embodiment in a wireless communication circuit is described.

[0146] Fig.7D The circuit structure diagram of a radio frequency front-end module 230d is shown, which can simultaneously perform B34, B39 and B41 frequency band transmission and reception work. Figure 7C In addition, the RF front-end module 230d replaces the single passband filter 2307 and the dual passband filter 2314 in the RF front-end module 230c with a triple passband filter 2321, which is connected to the switch end S11 of the transmitting switch 2303 and the X12 port of the antenna switch 2308. It can simultaneously transmit and receive signals of three frequency bands, and can save the transmitting switch 2304 and the power amplifier 2313 (originally connected to the single passband filter 2307) Figure 5A), further improving the integration of electronic equipment and reducing equipment size and cost.

[0147] Specifically, the dual-passband filter 2319 can transmit signals in the B1 and B3 frequency bands simultaneously, the dual-passband filter 2320 can receive signals in the B1 and B3 frequency bands simultaneously or receive signals in the B66 and B3 frequency bands simultaneously, and the triple-passband filter 2321 can transmit and receive signals in the B34, B39 and B41 frequency bands simultaneously, thereby increasing the number of frequency band channels connected to the same transmitting switch and capable of working simultaneously in an RF front-end module to three, greatly improving the efficiency of wireless communications.

[0148] In other embodiments, in addition to the above-mentioned dual-passband filter and triple-passband filter, devices such as quad-passband filters may also be used to perform simultaneous transmission and reception of different frequency band combinations, which is not limited here.

[0149] The above-mentioned RF front-end module combines the scattered frequency bands currently supported by FDD or TDD into a single-channel transmission or reception to construct an uplink or downlink cross-band large carrier working channel, thereby improving the uplink or downlink data transmission rate, and supporting high uplink throughput at low cost and small area. It should be noted that the communication modes supported in the above-mentioned circuit can be new radio (NR), CA, long term evolution (LTE) and NR dual connectivity (enhanced new radio dual connectivity, ENDC) and other communication standards, or other communication modes that may develop and evolve.

[0150] In an exemplary embodiment, the present application also provides a wireless communication circuit, which includes a RF integrated module, a RF front-end module as described in any one of the embodiments of the present application, and an antenna module; wherein the RF integrated module includes at least one transmitting end and at least one receiving end, and is connected to the RF front-end module through the transmitting end and the receiving end; the RF front-end module is connected to the antenna module.

[0151] In some embodiments of the present application, the wireless communication circuit further includes a modulation and demodulation module, and the radio frequency integrated module further includes a processing end, which is connected to the modulation and demodulation module. Specifically, the modulation and demodulation module may include a modem.

[0152] In an exemplary embodiment, the present application also provides a chip, which includes a wireless communication circuit, the wireless communication circuit includes a radio frequency integrated module, a radio frequency front-end module as described in any one of the embodiments of the present application, and an antenna module; wherein the radio frequency integrated module includes at least one transmitting end and at least one receiving end, and is connected to the radio frequency front-end module through the transmitting end and the receiving end; the radio frequency front-end module is connected to the antenna module.

[0153] In an exemplary embodiment, the present application also provides an electronic device, which includes a wireless communication circuit, the wireless communication circuit includes a radio frequency integrated module, a radio frequency front-end module as described in any one of the embodiments of the present application, and an antenna module; wherein the radio frequency integrated module includes at least one transmitting end and at least one receiving end, and is connected to the radio frequency front-end module through the transmitting end and the receiving end; the radio frequency front-end module is connected to the antenna module.

[0154] In the accompanying drawings, some structural features may be shown in a particular arrangement and / or order. However, it should be understood that such a particular arrangement and / or ordering may not be required. Instead, in some embodiments, these features may be arranged in an order different from that shown in the illustrative drawings. In addition, the inclusion of structural features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features may not be included or may be combined with other features.

[0155] It should be noted that the units / modules mentioned in the various device embodiments of the present application are all logical units / modules. Physically, a logical unit / module can be a physical unit / module, or a part of a physical unit / module, or can be implemented as a combination of multiple physical units / modules. The physical implementation method of these logical units / modules themselves is not the most important. The combination of functions implemented by these logical units / modules is the key to solving the technical problems proposed by the present application. In addition, in order to highlight the innovative part of the present application, the above-mentioned device embodiments of the present application do not introduce units / modules that are not closely related to solving the technical problems proposed by the present application, which does not mean that there are no other units / modules in the above-mentioned device embodiments.

[0156] It should be noted that in the examples and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0157] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present application.

Claims

1. A radio frequency front-end module, characterized in that: It includes a first amplifier, a first switch and a first filter; wherein, A first end of the first amplifier is connected to at least one transmitting end of a radio frequency integrated module in a wireless communication circuit where the radio frequency front-end module is located, and a second end of the first amplifier is connected to a first end of the first switch; The first switch further includes a second end, wherein the second end of the first switch is connected to the first end of the first filter; The first filter is a single-input single-output multi-passband filter, and the second end of the first filter is connected to the antenna module in the wireless communication circuit where the radio frequency front-end module is located.

2. The RF front-end module according to claim 1, characterized in that: The first filter includes at least one of a dual-passband filter, a triple-passband filter, and a quad-passband filter.

3. The RF front-end module according to claim 1, characterized in that: The RF front-end module further includes a second switch, and the first filter is connected to the antenna module via the second switch; wherein, A first end of the second switch is connected to the antenna module, and a second end of the second switch is connected to a second end of the first filter.

4. The RF front-end module according to claim 3, characterized in that: The RF front-end module also includes a second amplifier, and the first switch also includes a third end, the third end of the first switch is connected to the first end of the second amplifier, and the second end of the second amplifier is connected to at least one receiving end of the RF integrated module in the wireless communication circuit where the RF front-end module is located.

5. The RF front-end module according to claim 4, characterized in that: The RF front-end module further includes a third switch, and the first switch is connected to the second amplifier through the third switch; wherein, A first end of the third switch is connected to the third end of the first switch, and a second end of the third switch is connected to the first end of the second amplifier.

6. The RF front-end module according to claim 3, characterized in that: The RF front-end module also includes a third amplifier, a fourth switch and a second filter; wherein, The first end of the third amplifier is connected to at least one transmitting end of the RF integrated module in the wireless communication circuit where the RF front-end module is located, and the second end of the third amplifier is connected to the first end of the fourth switch; The fourth switch further includes a second end, wherein the second end of the fourth switch is connected to the first end of the second filter; The second filter is a single-passband filter, and the second end of the second filter is connected to the antenna module in the wireless communication circuit where the RF front-end module is located.

7. The radio frequency front-end module according to claim 6, characterized in that: The second filter and the antenna module are connected via the second switch. The second switch further includes a third end. The third end of the second switch is connected to the second end of the second filter.

8. The radio frequency front-end module according to claim 3, characterized in that: The RF front-end module further includes a third filter, and the first switch further includes a fourth terminal; wherein, The third filter is a single-input single-output multi-passband filter, the fourth end of the first switch is connected to the first end of the third filter, and the second end of the third filter is connected to the antenna module in the wireless communication circuit where the RF front-end module is located.

9. The radio frequency front-end module according to claim 8, characterized in that: The third filter and the antenna module are connected via the second switch. The second switch further includes a fourth end. The fourth end of the second switch is connected to the second end of the third filter.

10. A wireless communication circuit, characterized in that: It comprises a radio frequency integrated module, a radio frequency front-end module as claimed in any one of claims 1 to 9, and an antenna module; wherein: The RF integrated module includes at least one transmitting end and at least one receiving end, and is connected to the RF front-end module through the transmitting end and the receiving end; The radio frequency front-end module is connected to the antenna module.

11. The wireless communication circuit according to claim 10, characterized in that: The wireless communication circuit further includes a modulation and demodulation module, and the radio frequency integrated module further includes a processing end, and the processing end is connected to the modulation and demodulation module.

12. A chip, characterized in that: It comprises a wireless communication circuit, wherein the wireless communication circuit comprises a radio frequency integrated module, a radio frequency front-end module according to any one of claims 1 to 9, and an antenna module; wherein, The RF integrated module includes at least one transmitting end and at least one receiving end, and is connected to the RF front-end module through the transmitting end and the receiving end; The radio frequency front-end module is connected to the antenna module.

13. An electronic device, characterized in that: It comprises a wireless communication circuit, wherein the wireless communication circuit comprises a radio frequency integrated module, a radio frequency front-end module according to any one of claims 1 to 9, and an antenna module; wherein, The RF integrated module includes at least one transmitting end and at least one receiving end, and is connected to the RF front-end module through the transmitting end and the receiving end; The radio frequency front-end module is connected to the antenna module.

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