CN217406537U - RF Systems and Communication Equipment - Google Patents

Abstract

The application provides a radio frequency system and communication equipment, and the radio frequency system includes: the radio frequency transceiver comprises a radio frequency transceiver, a transmitting module, a first receiving module, a second receiving module and a switch module, wherein the transmitting module is used for transmitting the radio frequency signal output by the radio frequency transceiver and transmitting the radio frequency signal from the first antenna to the first receiving module; the first receiving circuit in the first receiving module is used for receiving and processing the radio-frequency signals from the first antenna, the second receiving circuit in the first receiving module is used for receiving and processing the radio-frequency signals from the third antenna, the third receiving circuit in the second receiving module is used for receiving and processing the radio-frequency signals from the second antenna, and the fourth receiving circuit in the second receiving module is used for receiving and processing the radio-frequency signals from the fourth antenna.

Description

RF Systems and Communication Equipment

technical field

The present application relates to the field of radio frequency technology, and in particular, to a radio frequency system and communication equipment.

Background technique

With the development and progress of technology, mobile communication technology has gradually begun to be applied to communication devices with built-in radio frequency systems, such as mobile phones. A traditional radio frequency system can usually support a non-standalone networking mode (Non-standalone, NSA) to be compatible with a standalone networking mode (Standalone, SA). When the radio frequency system works in the SA mode, there will be additional radio frequency components (for example, power amplifiers on the transmit path) in an idle state, which is not conducive to the miniaturization design of the radio frequency system.

Utility model content

The embodiments of the present application provide a radio frequency system and a communication device, which can realize the downlink 4*4 MIMO reception function of radio frequency signals without setting a radio frequency system that supports NSA and is compatible with SA mode, which can reduce costs and is also beneficial to the realization of Product miniaturization design.

A radio frequency system includes: a radio frequency transceiver, a transmitting module, a first receiving module, a second receiving module and a switch module, wherein,

The two first ends of the switch module are respectively connected with the transmitting module and the second receiving module in a one-to-one correspondence, and the two second ends of the switch module are respectively in a one-to-one correspondence with the first antenna and the second antenna connect;

The transmitting module is also connected to the radio frequency transceiver and the first receiving module respectively, and is used for transmitting and processing the radio frequency signal output by the radio frequency transceiver, and transmitting the radio frequency signal from the first antenna. transmitted to the first receiving module;

The first receiving module is configured with a first antenna port and a second antenna port, the first receiving module includes a first receiving circuit and a second receiving circuit, and the first receiving circuit passes through the first antenna port is connected with a transmitting module for receiving and processing the radio frequency signal from the first antenna; the second receiving circuit is connected with a third antenna via the second antenna port, and is used for receiving and processing the radio frequency signal from the third antenna The radio frequency signal of the antenna is received and processed;

The second receiving module is configured with a third antenna port and a fourth antenna port, the second receiving module includes a third receiving circuit and a fourth receiving circuit, and the third receiving circuit passes through the third antenna port is connected to the switch module for receiving and processing the radio frequency signal from the second antenna, and the fourth receiving circuit is connected to the fourth antenna via the fourth antenna port for receiving and processing the radio frequency signal from the second antenna. The radio frequency signal of the fourth antenna is received and processed.

An embodiment of the present application provides a communication device, including the above-mentioned radio frequency system.

The above-mentioned radio frequency system and communication equipment, the radio frequency system includes: a radio frequency transceiver, a transmitting module, a first receiving module, a second receiving module and a switch module, wherein the transmitting module can transmit and process the radio frequency signal output by the radio frequency transceiver, and transmit The radio frequency signal from the first antenna is transmitted to the first receiving module; the first receiving module includes a first receiving circuit and a second receiving circuit, and the first receiving circuit is connected to the transmitting module through the first antenna port, and is used for receiving signals from the first antenna. The second receiving circuit is connected to the third antenna through the second antenna port, and is used to receive and process the radio frequency signal from the third antenna; the second receiving module includes a third receiving circuit and a fourth receiving circuit , the third receiving circuit is connected to the switch module through the third antenna port for receiving and processing the radio frequency signal from the second antenna, the fourth receiving circuit is connected to the fourth antenna through the fourth antenna port, and is used for receiving and processing the radio frequency signal from the fourth antenna The radio frequency signal of the antenna is received and processed. The radio frequency system can support the reception of 4-stream data by configuring two receiving circuits in the first receiving module and the second receiving module respectively. Therefore, the downlink 4*4MIMO receiving function of the radio frequency signal can be realized, so that the radio frequency system can receive It only works in SA mode, and does not need to set up an RF system that supports NSA and is compatible with SA mode, which can reduce the development of additional 2-stream data, reduce R&D and material costs, and save the space occupied by the RF system. Conducive to the realization of product miniaturization design.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is one of the structural block diagrams of the radio frequency system in one embodiment;

Fig. 2 is the second structural block diagram of the radio frequency system in one embodiment;

Fig. 3 is the third structural block diagram of the radio frequency system in one embodiment;

Fig. 4 is the fourth structural block diagram of the radio frequency system in one embodiment;

Fig. 5 is the fifth structural block diagram of the radio frequency system in one embodiment;

Fig. 6 is the sixth structural block diagram of the radio frequency system in one embodiment;

Fig. 7 is the seventh structural block diagram of the radio frequency system in one embodiment;

Fig. 8 is the eighth structural block diagram of the radio frequency system in one embodiment;

FIG. 9 is a structural block diagram of a communication device in one embodiment.

Detailed ways

In order to facilitate the understanding of the present application, and to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Numerous specific details are set forth in the following description to facilitate a thorough understanding of the present application, and preferred embodiments of the present application are set forth in the accompanying drawings. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure of this application is provided. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise. In the description of this application, "several" means at least one, such as one, two, etc., unless expressly and specifically defined otherwise.

The radio frequency system involved in the embodiments of the present application may be applied to a communication device with a wireless communication function, and the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing device connected to a wireless modem, and various forms of The user equipment (User Equipment, UE) (for example, a mobile phone), a mobile station (MobileStation, MS) and so on. For convenience of description, the devices mentioned above are collectively referred to as communication devices.

As shown in FIG. 1 , in one embodiment, an embodiment of the present application provides a radio frequency system. The radio frequency system includes: a radio frequency transceiver 10 , a transmitting module 20 , a first receiving module 30 , a second receiving module 40 , and a switch module 50. The two first ends of the switch module 50 are respectively connected to the transmitting module 20 and the second receiving module 40 in a one-to-one correspondence, and the two first ends of the switch module 50 are respectively connected to the first antenna ANT1 and the second antenna ANT2 one-to-one. corresponding connection. The transmitting module 20 and the second receiving module 40 can be switched and connected to the first antenna ANT1 and the second antenna ANT2 through the switch module 50 .

The transmitting module 20 is connected to the radio frequency transceiver 10 and the first receiving module 30 respectively, and is used for transmitting and processing the radio frequency signal output by the radio frequency transceiver 10 and transmitting the radio frequency signal from the antenna to the first receiving module 30 . The transmission module 20 may support transmission processing of radio frequency signals. Exemplarily, the transmitting module 20 may be configured to perform power amplification processing on the radio frequency signal output by the radio frequency transceiver 10 , and switch the power amplified radio frequency signal to output to the first antenna ANT1 and the second antenna ANT2 through the switch module 50 . Optionally, the transmitting module 20 may further perform power amplification and filtering processing on the radio frequency signal output by the radio frequency transceiver 10 , and switch the filtered radio frequency signal to output to the first antenna ANT1 and the second antenna ANT2 through the switch module 50 . The radio frequency signal may be a 4G LTE signal or a 5G NR signal. For ease of description, in the embodiments of the present application, the radio frequency signal is an example of a 5G NR signal for description, wherein the radio frequency signal may be a single-band 5G NR signal, or may include a 5G NR signal of multiple frequency bands.

The first receiving module 30 is configured with a first antenna port and a second antenna port. The first receiving module 30 includes a first receiving circuit 310 and a second receiving circuit 320, wherein the first receiving circuit 310 and the second receiving circuit 320 Both refer to support for receiving and processing radio frequency signals. The first receiving circuit 310 is connected to the transmitting module 20 through the first antenna port. Specifically, the transmitting module 20 can receive the radio frequency signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50, and transmit the received radio frequency signal to the first receiving circuit 310 through the first antenna port, and the first receiving circuit 310 The radio frequency signal from the first antenna ANT1 or the second antenna ANT2 may be received and processed. The second receiving circuit 320 is connected to the third antenna ANT3 through the second antenna port, and is used for receiving and processing the radio frequency signal from the third antenna ANT3. Exemplarily, the transmitting module 20 can transmit and process the radio frequency signal output by the radio frequency transceiver, and transmit it to the free space through the first antenna ANT1, and the first receiving circuit 310 can transmit the radio frequency signal through the first antenna port, the transmitting module 20, and the switch. The module 50 receives and processes the radio frequency signal from the first antenna ANT1.

The second receiving module 40 is configured with a third antenna port and a fourth antenna port, and the second receiving module 40 includes a third receiving circuit 410 and a fourth receiving circuit 420 . The third receiving circuit 410 is connected to the switch module 50 via the third antenna port, and is used for receiving and processing the radio frequency signal from the antenna. The fourth receiving circuit 420 is connected to the fourth antenna ANT4 via the fourth antenna port, and is used for receiving and processing the radio frequency signal from the fourth antenna ANT4.

The first receiving module 30 and the second receiving module 40 may be respectively multi-channel multi-mode low noise amplifier modules (Low Noise Amplifier bank, LNA bank), which may be referred to as LNA bank devices for short. That is, the first receiving module 30 and the second receiving module 40 may be radio frequency chips, in which a plurality of receiving circuits composed of a plurality of low noise amplifiers are integrated. Wherein, the first antenna port, the second antenna port, the third antenna port and the fourth antenna port are respectively the radio frequency terminals or lead terminals on the LNA bank device.

It should be noted that the first receiving circuit 310 can receive and process the radio frequency signal from one of the first antenna ANT1 and the second antenna ANT2, and the third receiving circuit 410 can receive and process the radio frequency signal from one of the first antenna ANT1 and the second antenna ANT2 The other radio frequency signal is received and processed. The first receiving circuit 310 and the third receiving circuit 410 can respectively receive radio frequency signals from different antennas, and simultaneously support the receiving and processing of the radio frequency signals.

In this embodiment of the present application, the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4 can all support the sending and receiving of radio frequency signals of different frequency bands. Each antenna may be formed using any suitable type of antenna. For example, each antenna may include an antenna with resonating elements formed from the following antenna structures: array antenna structures, loop antenna structures, patch antenna structures, slot antenna structures, helical antenna structures, strip antennas, monopole antennas, even At least one of the pole antennas, etc. Different types of antennas can be used for different frequency bands and combinations of frequency bands. In this embodiment of the present application, the types of the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4 are not further limited.

The above radio frequency system includes: a radio frequency transceiver 10, a transmitting module 20, a first receiving module 30, a second receiving module 40 and a switch module 50, wherein the transmitting module 20 can transmit and process the radio frequency signal output by the radio frequency transceiver 10, and transmit the radio frequency signal from the antenna to the first receiving module 30; the first receiving module 30 includes a first receiving circuit 310 and a second receiving circuit 320, the first receiving circuit 310 is connected to the transmitting module 20 through the first antenna port, and For receiving and processing the radio frequency signal from the antenna; the second receiving circuit 320 is connected to the third antenna ANT3 through the second antenna port, for receiving and processing the radio frequency signal from the third antenna ANT3; the second receiving module 40 includes a first Three receiving circuits 410 and a fourth receiving circuit 420. The third receiving circuit 410 is connected to the switch module 50 through the third antenna port for receiving and processing the radio frequency signal from the antenna. The fourth receiving circuit 420 is connected to the switching module 50 through the fourth antenna port. The fourth antenna ANT4 is connected for receiving and processing the radio frequency signal from the fourth antenna ANT4. Obviously, the radio frequency system can support the reception of 4-stream data by configuring two receiving circuits in the first receiving module 30 and the second receiving module 40 respectively. Therefore, the downlink 4*4 MIMO receiving function of the radio frequency signal can be realized, It can support the RF system to work only in the SA mode, without setting the RF system that supports the NSA mode and is compatible with the SA mode, which can reduce the development of additional 2-stream data, reduce R&D and material costs, and save the RF system. The space occupied is conducive to the realization of product miniaturization design. Among them, the 5G NSA standard specified by 3GPP adopts the LTE and 5G NR new air interface dual connection (EN-DC) method, with 4G as the anchor point of the control plane, the 4G base station (eNB) as the master station, and the 5G base station (gNB) as the slave. station and continue to use the 4G core network. Among them, C-plane is responsible for processing control signals, that is, managing call connections, and U-plane is responsible for processing voice signals, that is, managing call content. In NSA mode, you can only connect to the 5G network after connecting to the 4G network through the C-plane.

As shown in FIG. 2, in one embodiment, the first receiving circuit includes a first low-noise amplifier 311, the second receiving circuit includes a second low-noise amplifier 321, the third receiving circuit includes a third low-noise amplifier 411, and the third receiving circuit includes a third low-noise amplifier 411. The quad reception circuit includes a fourth low noise amplifier 421 . It should be noted that the numbers of the first antenna port, the second antenna port, the third antenna port and the fourth antenna port are respectively equal, and the number of each antenna port may be equal to the number of frequency bands included in the radio frequency signal.

For convenience of description, the radio frequency signal is a single-band signal, such as the N1 or N41 frequency band, as an example for description. It should be noted that the radio frequency signal may also be a 5G NR signal of a low frequency, an intermediate frequency or a high frequency frequency band of other frequency bands. The input end of the first low-noise amplifier 311 is connected to the first antenna port, and the output end of the first low-noise amplifier 311 is connected to the radio frequency transceiver 10, and is used to perform low noise amplifier operation on the radio frequency signal received by the first antenna port deal with. It can be understood that the first low noise amplifier 311 can receive the radio frequency signal from the first antenna ANT1 through the first antenna port, the transmitting module 20 and the switch module 50, and perform low noise amplification processing on it to support the radio frequency signal. The first channel of reception processing (or the main set of reception processing). The transmitting module 20 may filter the radio frequency signal from the first antenna ANT1, and transmit the filtered radio frequency signal to the first antenna port.

The input end of the second low noise amplifier 321 is connected to the second antenna port, and the output end of the second low noise amplifier 321 is connected to the radio frequency transceiver 10 for performing low noise amplifier processing on the radio frequency signal received by the second antenna port. It can be understood that the second low-noise amplifier 321 can be connected to the third antenna ANT3 via the second antenna ANT2 port. Therefore, the second low-noise amplifier 321 can perform low-noise amplification processing on the radio frequency signal from the third antenna ANT3 to Supports the second channel reception processing (or main set MIMO reception processing) of the radio frequency signal.

The input end of the third low noise amplifier 411 is connected to the third antenna port, and the output end of the third low noise amplifier 411 is connected to the radio frequency transceiver 10 for performing low noise amplifier processing on the radio frequency signal received by the third antenna port. It can be understood that the third low noise amplifier 411 can receive the radio frequency signal from the second antenna ANT2 through the third antenna port and the switch module 50, and perform low noise amplification processing on it to support the third channel reception of the radio frequency signal. processing (or diversity reception processing).

The input end of the fourth low noise amplifier 421 is connected to the fourth antenna port, and the output end of the fourth low noise amplifier 421 is connected to the radio frequency transceiver 10 for performing low noise amplifier processing on the radio frequency signal received by the fourth antenna port. It can be understood that the fourth low-noise amplifier 421 can be connected to the fourth antenna ANT4 through the fourth antenna ANT4 port. Therefore, the fourth low-noise amplifier 421 can perform low-noise amplification processing on the radio frequency signal from the fourth antenna ANT4 to Supports the fourth channel receiving processing (or diversity MIMO receiving processing) for the radio frequency signal.

In this embodiment, the first receiving module 30 is provided with two low-noise amplifiers, which can support low-noise amplification processing of two channels of radio frequency signals at the same time, so as to support the receiving and processing of two channels of radio frequency signals. In addition, the second receiving module Two low-noise amplifiers are set in 40, which can support low-noise amplification processing of two channels of radio frequency signals at the same time, so as to support the reception and processing of two channels of radio frequency signals. Obviously, the first receiving module 30 and the second receiving module 40 are provided with a total of four low-noise amplifiers, which can work together to support four-way reception of radio frequency signals. Compared with the radio frequency system supporting the NSA working mode, each receiving module can Setting two less low-noise amplifiers can reduce the cost and the area occupied by the low-noise amplifiers, which is beneficial to the miniaturized design of the radio frequency system.

Please continue to refer to FIG. 2 , in one embodiment, the first receiving module 30 is further configured with a plurality of first output ports, and the second receiving module 40 is further configured with a plurality of second output ports. The first output port and the second output port are radio frequency terminals on the LNA bank device, which can be used to connect with the radio frequency transceiver 10 . Specifically, the first receiving module 30 further includes a first radio frequency switch 330 , two first ends of the first radio frequency switch 330 are respectively connected with the output end of the first low noise amplifier 311 and the output end of the second low noise amplifier 321 one by one. Correspondingly connected, the two second ends of the first radio frequency switch 330 are respectively connected to the two first output ports in a one-to-one correspondence. The first low noise amplifier 311 and the second low noise amplifier 321 can selectively output radio frequency signals to the radio frequency transceiver 10 through the first radio frequency switch 330 . The second receiving module 40 further includes a second radio frequency switch 430. The two first ends of the second radio frequency switch 430 are respectively connected to the output end of the third low noise amplifier 411 and the output end of the fourth low noise amplifier 421 in a one-to-one correspondence. The two second ends of the first radio frequency switch 330 are respectively connected to the two second output ports in a one-to-one correspondence. The third low noise amplifier 411 and the fourth low noise amplifier 421 can selectively output radio frequency signals to the radio frequency transceiver 10 through the second radio frequency switch 430 .

Optionally, the first radio frequency switch 330 and the second radio frequency switch 430 may be a multiplexer, respectively, or a double-pole double-throw switch.

In the embodiment of the present application, by disposing the first radio frequency switch 330 in the first receiving module 30 and disposing the second radio frequency switch 430 in the second receiving module 40, the output of different low noise amplifiers to the radio frequency transceiver 10 can be improved. A transmission channel is used to expand the reception link of the radio frequency system, thereby improving the reception performance of the radio frequency signal to the radio frequency signal.

As shown in FIG. 3 , in one embodiment, the radio frequency system further includes a first filtering module 60 and a second filtering module 70 . The first filtering module 60 is respectively connected to the first receiving module 30 and the third antenna ANT3, and is used to support filtering processing of the radio frequency signal from the third antenna ANT3. Specifically, the first filtering module 60 can transmit the filtered radio frequency signal to the first receiving module 30, and the first receiving module 30 performs low-noise amplification processing on the filtered radio frequency signal, and outputs it to the radio frequency transceiver The device 10 is used to realize the reception and processing of the radio frequency signal. The second filtering module 70 is connected to the second receiving module 40, the switching module 50, and the fourth antenna ANT4 respectively, and is used to support the filtering processing of the radio frequency signal from the antenna, and transmit the filtered radio frequency signal to the second receiving module ANT4. module 40, and the second receiving module 40 performs low-noise amplification processing on the filtered radio frequency signal, and outputs it to the radio frequency transceiver 10, so as to realize the receiving and processing of the radio frequency signal.

The first filtering module 60 may include at least one first filter, wherein the number of the first filters is the same as the number of frequency bands included in the radio frequency signal. Exemplarily, if the radio frequency signal only includes 5G NR signals of a single frequency band, the number of first filters is one; if the radio frequency signal includes 5G NR signals of two frequency bands, the number of first filters is two, and two The first filters can respectively filter the 5G NR signals of the two frequency bands to filter out spurious waves, so as to output the 5G NR signals of the two frequency bands respectively. The second filter module 70 may include two filter circuits, wherein each filter circuit may include at least one second filter, wherein the number of the second filters is the same as the number of frequency bands included in the radio frequency signal. Exemplarily, if the radio frequency signal only includes 5G NR signals of a single frequency band, the number of second filters is one; if the radio frequency signal includes 5G NR signals of two frequency bands, the number of second filters is two, and two The second filter can filter the 5G NR signals of the two frequency bands respectively to filter out spurious waves, so as to output the 5G NR signals of the two frequency bands respectively.

As shown in FIG. 4 , in one of the embodiments, for the convenience of description, the radio frequency signal may include a 5GNR signal of a single frequency band, such as an N41 frequency band signal, as an example for description.

Both the first filter 610 and the two second filters 710 can support filtering processing of N41 frequency-occurring signals, and filter out spurious waves other than the N41 frequency band, so as to output only the N41 frequency band signal. The first filter 610 can filter the signal from the third antenna ANT3 to output the N41 frequency band signal to the second low noise amplifier 321 , which is processed by the low noise amplifier and then output to the radio frequency transceiver 10 . A second filter 710 can filter the signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50 to output the N41 frequency band signal to the third low noise amplifier 411, and after the low noise amplifier processing, output to the radio frequency transceiver 10 . Another second filter 710 can filter the signal from the fourth antenna ANT4 to output the N41 frequency band signal to the fourth low noise amplifier 421 , which is processed by the low noise amplifier and then output to the radio frequency transceiver 10 .

As shown in FIG. 5 , in one embodiment, the radio frequency signal includes a first signal and a second signal, and the frequency bands of the first signal and the second signal are different. For ease of description, the radio frequency signal may include dual-band 5G NR signals, which may be respectively recorded as a first signal and a second signal, wherein the first signal is an N41 frequency band signal, and the second signal is an N1 frequency band signal as an example for description. Wherein, the number of the first antenna port, the second antenna port, the third antenna port and the fourth antenna port is two respectively. Wherein, the number of the first filters 610 is two, and each filtering unit may include two second filters 710 . Among them, the two first filters 610 and the two second filters 710 can respectively implement filtering processing on the N1 and N41 frequency band signals to filter out spurious waves and output only the N1 and N41 frequency band signals.

Optionally, the two first filters 610 may be the first dual-band filters 601 , wherein one filter circuit may include the second dual-band filter 701 , and the other filter circuit may include the third dual-band filter 702 . The two first ends of the first dual-band filter 601 are respectively connected to a first antenna port and a second antenna port in a one-to-one correspondence, and the second end of the first dual-band filter 601 is connected to the third antenna ANT3 . The two first ends of the second dual-band filter 701 are respectively connected to a third antenna port and a fourth antenna port in a one-to-one correspondence, and the second end of the second dual-band filter 701 is connected to a first end of the switch module 50 . The two first ends of the third dual-band filter 702 are respectively connected to another third antenna port and another fourth antenna port in a one-to-one correspondence, and the second end of the second dual-band filter 701 is connected to the fourth antenna port. Antenna ANT4 connection.

The input ends of the first low noise amplifier 311 are respectively connected to the two first antenna ports, and the output end of the first low noise amplifier 311 is connected to the radio frequency transceiver 10 . Specifically, the input end of the first low noise amplifier 311 can be connected to the transmitting module 20 via a first antenna port, so as to receive the first signal from the first antenna ANT1 via the switch module 50, and perform low noise amplification processing on it, In order to realize the main set reception of the first signal; the input end of the first low noise amplifier 311 can also receive the second signal from the third antenna ANT3 through another first antenna port, the first dual-band filter 601, and receive the second signal from the third antenna ANT3. It performs low-noise amplification processing to achieve main set MIMO reception of the second signal.

The input ends of the second low noise amplifier 321 are respectively connected to the two second antenna ports, and the output end of the second low noise amplifier 321 is connected to the radio frequency transceiver 10 . Specifically, the input end of the second low-noise amplifier 321 can receive the second signal from the first antenna ANT1 through a second antenna port and the transmitting module 20, and perform low-noise amplification processing on it, so as to realize the transmission of the second signal. Main set reception; the input end of the second low noise amplifier 321 can also receive the first signal from the third antenna ANT3 through another second antenna port and the first dual-band filter 601, and perform low noise amplification processing on it, to achieve diversity MIMO reception of the first signal.

The input ends of the third low noise amplifier 411 are respectively connected to the two third antenna ports, and the output end of the third low noise amplifier 411 is connected to the radio frequency transceiver 10 . Specifically, the input end of the second low-noise amplifier 321 can receive the first signal from the second antenna ANT2 via a third antenna port, the second dual-band filter 701 and the switch module 50, and perform low-noise amplification processing on it. , so as to realize diversity reception of the first signal; the input end of the third low noise amplifier 411 can also receive the second signal from the fourth antenna ANT4 through another third antenna port and the third dual-band filter 702, and receive the second signal from the fourth antenna ANT4. It performs low noise amplification processing to achieve diversity MIMO reception of the second signal.

The input ends of the fourth low noise amplifier 421 are respectively connected to the two fourth antenna ports, and the output end of the fourth low noise amplifier 421 is connected to the radio frequency transceiver 10 . Specifically, the input end of the fourth low-noise amplifier 421 can receive the second signal from the second antenna ANT2 via a fourth antenna port, the second dual-band filter 701, and the switch module 50, and perform low-noise amplification processing on it. , so as to realize diversity reception of the second signal; the input end of the fourth low-noise amplifier 421 can also receive the first signal from the fourth antenna ANT4 through another fourth antenna port, and perform low-noise amplification processing on it to Main set MIMO reception of the first signal is achieved.

In the embodiment of the present application, by setting the first filtering module 60 and the second filtering module 70, the filtering processing of each radio frequency signal (the second signal and the first signal) from the antenna can be performed without additionally adding a low-noise amplifier. In this case, it can support the 4*4 MIMO function of 5G NR signals in multiple frequency bands, which can improve the reception performance of 5G NR signals in multiple frequency bands.

In one of the embodiments, the first filtering module may be built in the first receiving module. Optionally, the second filtering module may be built in the second receiving module. By embedding at least one of the first filtering module and the second filtering module in the corresponding receiving module, the integration degree of the radio frequency system can be further improved, so as to further facilitate the design of the miniaturization of the radio frequency system.

As shown in FIG. 5 , in one embodiment, the transmitting module 20 includes a power amplifying unit 210 and a filtering unit 220 . The power amplifying unit 210 is connected to the radio frequency transceiver 10 and the first receiving module 30 respectively, and is used to perform power amplifying processing on the radio frequency signal output by the radio frequency transceiver 10 . Wherein, the power amplifier may be a multimode multiband power amplifier (Multimode Multiband Power Amplifier, MMPA), referred to as an MMPA device. Wherein, at least one power amplifier may be set in the power amplifier, so as to realize the power amplification processing of the 5G NR signal of at least one frequency band.

The filtering unit 220 is connected to the power amplifying unit 210 and the switch module 50 respectively, and is used for filtering the power-amplified radio frequency signal, outputting the filtered radio frequency signal to the switch module 50, and filtering the radio frequency signal from the antenna. After filtering, it is transmitted to the first receiving module 30 through the power amplifying unit 210 . Exemplarily, the filtering unit 220 may include a filter, and the filter is disposed on the radio frequency path between the power amplifying unit 210 and the switch module 50 . The filter can filter the radio frequency signal output by the power amplifying unit 210 , and transmit the filtered signal to the first antenna ANT1 or the second antenna ANT2 through the switch module 50 . The filter can also receive the signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50, perform filtering processing on it, and transmit the filtered radio frequency signal to the first receiving module 30 through the power amplifying unit 210, So that the first receiving module 30 realizes the receiving and processing of the radio frequency signal.

As shown in FIG. 6 , in one embodiment, the transmitting module 20 includes a power amplifying unit 210 and a filtering unit 220 . The difference from the previous embodiment is that the filtering is connected to the power amplifying unit 210 , the first receiving module 30 and the switching module 50 respectively, and the power amplifying unit 210 is not connected to the first receiving module 30 and is independent of each other. The filtering unit 220 is configured to filter the power amplified radio frequency signal, output the filtered radio frequency signal to the switch module 50 , and filter the radio frequency signal from the antenna and transmit it to the first receiving module 30 . Exemplarily, the filtering unit 220 may include two filters, and the two filters are respectively disposed on the transmit path and the receive path of the radio frequency signal. One of the filters can filter the radio frequency signal output by the power amplifying unit 210 , and transmit the filtered signal to the first antenna ANT1 or the second antenna ANT2 through the switch module 50 , and the other filter can pass through the switch module 50 Receive the signal from the first antenna ANT1 or the second antenna ANT2, filter it, and transmit the filtered radio frequency signal to the first receiving module 30, so that the first receiving module 30 can receive and process the radio frequency signal . Optionally, the filtering unit 220 may include a duplexer, wherein a first end of the duplexer is connected to the output end of the second power amplifier 212 through a fourth output port, and the other first end of the duplexer is connected. A first antenna port is connected to the input end of the first low noise amplifier 311 , and the second end of the duplexer is connected to the switch module 50 . Exemplarily, the switch module 50 may be a DP4T switch or a DP3T switch.

In the embodiment of the present application, the transmitting module 20 can support power amplification and filtering processing of radio frequency signals to support the transmitting processing of radio frequency signals, and at the same time, the transmitting module 20 can also perform filtering processing on radio frequency signals from the antenna, Then, the filtered radio frequency signal is transmitted to the first receiving module 30, and the transmitting module 20 can also realize the receiving and transmission of the radio frequency signal, and can realize the filtering processing of the radio frequency signal on the receiving path and the transmitting path, and further improve the radio frequency. system integration.

As shown in FIG. 8 , in one embodiment, the radio frequency signal includes a first signal and a second signal, and the frequency bands of the first signal and the second signal are different, wherein the transmitting module 20 includes a power amplifying unit 210, a first filtering unit 230 and second filtering unit 240. The power amplifying unit 210 is connected to the radio frequency transceiver 10 and the first receiving module 30 respectively, and is used to perform power amplifying processing on the first signal and the second signal output by the radio frequency transceiver 10 . The first filtering unit 230 is connected to the power amplifying unit 210 and the switch module 50, respectively, and is used for filtering the first signal after power amplification, and outputting the filtered first signal to the switch module 50, and for filtering the first signal after the power amplification. The first signal of the antenna is filtered and transmitted to the first receiving module 30 through the power amplifying unit 210 . The second filtering unit 240 is connected to the power amplifying unit 210 , the first receiving module 30 and the switch module 50 respectively, and is used for filtering the power amplified second signal and outputting the filtered second signal to the switch module 50 , and the second signal from the antenna is filtered and transmitted to the first receiving module 30 .

It should be noted that the parameters of the second filtering unit 240 and the second filtering unit 240 can be respectively the filtering unit 220 shown in FIG. 5 and FIG. 6 , and details are not repeated here.

Please continue to refer to FIG. 8 , in one embodiment, the power amplifying unit 210 is configured with a third output port, a fourth output port and an auxiliary port. The third output port, the fourth output port and the auxiliary port can be used as radio frequency terminals of the MMPA device. The third output port and the fourth output port can be used to connect with the radio frequency transceiver 10, and the auxiliary port can be connected to the outside. The power amplifying unit 210 includes a first power amplifier 211 , a second power amplifier 212 and a switch unit 213 . The switch unit 213 is respectively connected to the output end, the auxiliary port and the third output port of the first power amplifier 211 . Exemplarily, the switch unit 213 may be a single-pole double-throw switch. The input end of the first power amplifier 211 is connected to the radio frequency transceiver 10 for performing power amplification processing on the first signal. The input end of the second power amplifier 212 is connected to the radio frequency transceiver 10, and the input end of the second power amplifier 212 is connected to the fourth output port for performing power amplification processing on the second signal.

Specifically, the first power amplifier 211 can perform power amplifying processing on the first signal, and transmit the power-amplified first signal to the first filtering unit 230, and after filtering processing, transmit the first signal to the first antenna through the switch module 50 ANT1 or the second antenna ANT2 to realize the transmission processing of the first signal. The first signal from the first antenna ANT1 or the second antenna ANT2 can be transmitted by the switchable module 50 to the first filtering unit 230, and the filtered first signal can be transmitted to the first signal through the third antenna port, the switching unit 213, and the auxiliary port. A low-noise amplifier in the receiving module 30 transmits the low-noise amplified first signal to the radio frequency transceiver 10 to implement receiving and processing of the first signal. The second power amplifier 212 can perform power amplifying processing on the second signal, and transmit the power-amplified second signal to the second filtering unit 240, and after filtering processing, the second signal is transmitted to the first antenna ANT1 or the first antenna ANT1 or the first antenna ANT1 through the switch module 50 after filtering processing. Two antennas ANT2, so as to realize the transmission processing of the second signal. The second signal from the first antenna ANT1 or the second antenna ANT2 can be transmitted to the switchable module 50 to the second filtering unit 240, the filtered second signal can be transmitted to the low noise amplifier in the first receiving module 30, and the The low-noise amplified second signal is transmitted to the radio frequency transceiver 10 to implement receiving and processing of the second signal.

Optionally, each filtering unit 220 included in the transmitting module 20 may also be integrated in the power amplifying unit 210 . By integrating each filtering unit 220 in the power amplifying unit 210, the integration degree of the radio frequency system can be further improved, so as to further facilitate the miniaturized design of the radio frequency system.

For ease of description, the working principle of the radio frequency signal operating in the SA mode is described by taking the first signal as an N41 frequency band signal and the second signal as an N1 frequency band signal as an example.

N41 SA Mode:

For the N41 transmit path, the N41 band signal is output from the third output port (eg, the high frequency HB port) of the first power amplifier, enters the B41 filter 230, and then passes through the switch module 50 (eg, DP4T switch) by the first antenna ANT1 launch out.

For the N41 receiving channel, the main set of N41 received PRx signals are received by the first antenna ANT1, and then sent to the N41 PRx filter 230 through the switch module 50 respectively, and then transmitted to the first low-noise amplifier 311 through the switch unit 213. After the noise is amplified, it is output to the radio frequency transceiver 10 for demodulation. The diversity receiving DRx signal of N41 is received by the second antenna ANT2, and then sent to the N41 DRx filter 701 through the switch module 50 respectively. After filtering, it is transmitted to the third low-noise amplifier 411. After low-noise amplification, the output to the radio frequency transceiver 10 for demodulation. The PRx MIMO signal of N41 is received by the fourth antenna ANT4, and sent to the N41 PRx MIMO filter 702 for filtering processing. The filtered N41 PRx MIMO signal is transmitted to the fourth low-noise amplifier 421, and then output to the fourth low-noise amplifier 421 after low-noise amplification processing. The radio frequency transceiver 10 performs demodulation. The DRx MIMO signal of N41 is received by the third antenna ANT3, and sent to the N41 DRx MIMO filter 601 for filtering processing. The filtered N41 DRx MIMO signal is transmitted to the second low-noise amplifier 321, and after low-noise amplification processing, it is output to The radio frequency transceiver 10 performs demodulation.

N1 SA mode:

For the N1 transmit path, the N1 band signal is output from the fourth output port (eg, the IF MB port) of the second power amplifier, enters the N1 filter 240, and is then transmitted by the first antenna ANT1 through the switch module 50 (eg, DP4T switch) go out.

For the N1 receiving path, the main set of N1 received PRx signals are received by the first antenna ANT1, and then sent to the N1 PRx filter 240 through the switch module 50 respectively. After filtering, they are output to the second low-noise amplifier 321. After being amplified, it is output to the radio frequency transceiver 10 for demodulation. The diversity receiving DRx signal of N1 is received by the second antenna ANT2, and then sent to the N1 DRx filter 701 through the switch module 50 respectively. After filtering, it is transmitted to the fourth low-noise amplifier 421. After low-noise amplification, the output to the radio frequency transceiver 10 for demodulation. The PRx MIMO signal of N1 is received by the third antenna ANT3, and sent to the N1 PRx MIMO filter 601 for filtering processing. The filtered N1 PRx MIMO signal is transmitted to the first low-noise amplifier 311, and after low-noise amplification processing, it is output to The radio frequency transceiver 10 performs demodulation. The DRx MIMO signal of N1 is received by the fourth antenna ANT4, and sent to the N1 DRx MIMO filter 702 for filtering processing. The filtered N1 DRx MIMO signal is transmitted to the third low-noise amplifier 411, and is output to the radio frequency after low-noise amplification processing. Transceiver 10 performs demodulation.

The above radio frequency system can work in the SA working mode, and can realize the uplink function of the first signal and the second signal and the downlink 4*4 MIMO receiving function. The radio frequency system only works in the SA mode, which supports NSA compared to the related technologies The RF system of the mode is compatible with the SA mode, which can reduce the development of additional 2-stream data, reduce R&D and material costs, and also save the space occupied by the RF system, which is conducive to the realization of product miniaturization design.

An embodiment of the present application further provides a communication device, where the radio frequency system in any of the foregoing embodiments is set on the communication device. By setting the radio frequency system on the communication device, the uplink function of the first signal and the second signal and the downlink 4*4 MIMO receiving function can be realized. The radio frequency system only works in the SA mode, which supports the NSA mode compared to the related art. The RF system is compatible with the SA mode, which can reduce the development of additional 2-stream data, reduce R&D and material costs, and save the space occupied by the RF system, which is conducive to the realization of product miniaturization design.

As shown in FIG. 9 , further, the communication device is a mobile phone 11 as an example for illustration. Specifically, as shown in FIG. 9 , the mobile phone 11 may include a memory 21 (which optionally includes one or more computer-readable storage devices). medium), processing circuit 22, peripheral interface 23, radio frequency system 24, input/output (I/O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29 . Those skilled in the art can understand that the mobile phone 11 shown in FIG. 9 does not constitute a limitation on the mobile phone, and may include more or less components than shown, or combine some components, or arrange different components. The various components shown in Figure 9 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplarily, the software components stored in the memory 21 include an operating system 211, a communication module (or instruction set) 212, a global positioning system (GPS) module (or instruction set) 213, and the like.

Processing circuitry 22 and other control circuitry, such as control circuitry in radio frequency system 24 , may be used to control the operation of handset 11 . The processing circuit 22 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

The processing circuit 22 may be configured to implement a control algorithm that controls the use of the antenna in the handset 11 . The processing circuit 22 may also issue control commands and the like for controlling the switches in the radio frequency system 24 .

I/O subsystem 26 couples input/output peripherals such as keypads and other input control devices on handset 11 to peripherals interface 23 . The I/O subsystem 26 optionally includes a touch screen, keys, tone generators, accelerometers (motion sensors), ambient light sensors and other sensors, light emitting diodes and other status indicators, data ports, and the like. Illustratively, a user may control the operation of cell phone 11 by supplying commands via I/O subsystem 26 and may use the output resources of I/O subsystem 26 to receive status information and other output from cell phone 11 . For example, the user can press the button 261 to turn on the cell phone or turn off the cell phone.

The radio frequency system 24 may be the radio frequency system in any of the foregoing embodiments.

The above examples only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. A radio frequency system, comprising: a radio frequency transceiver, a transmitting module, a first receiving module, a second receiving module and a switch module, wherein, The two first ends of the switch module are respectively connected with the transmitting module and the second receiving module in a one-to-one correspondence, and the two second ends of the switch module are respectively in a one-to-one correspondence with the first antenna and the second antenna connect; The transmitting module is also connected to the radio frequency transceiver and the first receiving module respectively, and is used for transmitting and processing the radio frequency signal output by the radio frequency transceiver, and transmitting the radio frequency signal from the first antenna. transmitted to the first receiving module; The first receiving module is configured with a first antenna port and a second antenna port, the first receiving module includes a first receiving circuit and a second receiving circuit, and the first receiving circuit passes through the first antenna port is connected with a transmitting module for receiving and processing the radio frequency signal from the first antenna; the second receiving circuit is connected with a third antenna via the second antenna port, and is used for receiving and processing the radio frequency signal from the third antenna The radio frequency signal of the antenna is received and processed; The second receiving module is configured with a third antenna port and a fourth antenna port, the second receiving module includes a third receiving circuit and a fourth receiving circuit, and the third receiving circuit passes through the third antenna port is connected to the switch module for receiving and processing the radio frequency signal from the second antenna, and the fourth receiving circuit is connected to the fourth antenna via the fourth antenna port for receiving and processing the radio frequency signal from the second antenna. The radio frequency signal of the fourth antenna is received and processed. 2. The radio frequency system according to claim 1, wherein the radio frequency system further comprises: a first filtering module, connected to the first receiving module and the third antenna, respectively, and configured to support filtering processing of the radio frequency signal from the third antenna; The second filtering module is connected to the second receiving module, the switch module, and the fourth antenna respectively, and is used for supporting filtering processing of the radio frequency signal from the antenna, and filtering the radio frequency signal after filtering processing. The signal is output to the second receiving module. 3. The radio frequency system according to claim 2, wherein the radio frequency signal comprises a first signal and a second signal, and the frequency bands of the first signal and the second signal are different, wherein the first antenna The number of the port, the second antenna port, the third antenna port and the fourth antenna port is two respectively; The first filtering module includes a first dual-band filter, wherein the two first ends of the first dual-band filter are in one-to-one correspondence with a first antenna port and a second antenna port respectively connection, the second end of the first dual-band filter is connected to the third antenna; The second filtering module includes a second dual-band filter and a third dual-band filter, wherein the two first ends of the second dual-band filter are respectively connected with a third antenna port, a The fourth antenna ports are connected in one-to-one correspondence, the second end of the second dual-band filter is connected to a first end of the switch module; the two first ends of the third dual-band filter are respectively connected to the other end. One of the third antenna ports and the other of the fourth antenna ports are connected in a one-to-one correspondence, and the second end of the second dual-band filter is connected to the fourth antenna. 4 . The radio frequency system according to claim 3 , wherein the first receiving circuit comprises a first low-noise amplifier, and the input ends of the first low-noise amplifier are respectively connected to the two first antenna ports. 5 . , the output end of the first low noise amplifier is connected to the radio frequency transceiver, and is used to perform low noise amplifier processing on the radio frequency signal received by the first antenna port; The second receiving circuit includes a second low-noise amplifier, the input ends of the second low-noise amplifier are respectively connected to the two second antenna ports, and the output end of the second low-noise amplifier is connected to the radio frequency transceiver is connected to a low-noise amplifier for processing the radio frequency signal received by the second antenna port; The third receiving circuit includes a third low-noise amplifier, the input ends of the third low-noise amplifier are respectively connected to the two third antenna ports, and the output end of the third low-noise amplifier is connected to the radio frequency transceiver is connected to a low-noise amplifier for processing the radio frequency signal received by the third antenna port; The fourth receiving circuit includes a fourth low-noise amplifier, the input ends of the fourth low-noise amplifier are respectively connected to the two fourth antenna ports, and the output end of the fourth low-noise amplifier is connected to the radio frequency transceiver The device is connected to a low-noise amplifier for processing the radio frequency signal received by the fourth antenna port. 5. The radio frequency system according to claim 4, wherein the first receiving module is further configured with a plurality of first output ports, and the second receiving module is further configured with a plurality of second output ports; The first receiving module further includes a first radio frequency switch, two first ends of the first radio frequency switch are respectively connected with the output end of the first low noise amplifier and the output end of the second low noise amplifier one by one. Correspondingly connected, the two second ends of the first radio frequency switch are respectively connected to the two first output ports in a one-to-one correspondence; The second receiving module further includes a second radio frequency switch, two first ends of the second radio frequency switch are respectively connected with the output end of the third low noise amplifier and the output end of the fourth low noise amplifier one by one. Correspondingly connected, the two second ends of the first radio frequency switch are respectively connected to the two second output ports in a one-to-one correspondence. 6. The radio frequency system according to claim 1, wherein the transmitting module comprises: a power amplifying unit, connected to the radio frequency transceiver and the first receiving module respectively, and configured to perform power amplifying processing on the radio frequency signal output by the radio frequency transceiver; The filtering unit is connected to the power amplifying unit and the switch module, respectively, and is used for filtering the power-amplified radio frequency signal, and outputting the filtered radio frequency signal to the switch module. The radio frequency signal of the antenna is filtered and transmitted to the first receiving module through the power amplifying unit. 7. The radio frequency system according to claim 1, wherein the transmitting module comprises: a power amplifying unit, connected to the radio frequency transceivers respectively, and configured to perform power amplifying processing on the radio frequency signals output by the radio frequency transceivers; a filtering unit, connected to the power amplifying unit, the first receiving module, and the switching module, respectively, for filtering the power-amplified radio frequency signal, and outputting the filtered radio frequency signal to the switch module, and the radio frequency signal from the antenna is filtered and then transmitted to the first receiving module. 8 . The radio frequency system according to claim 1 , wherein the radio frequency signal comprises a first signal and a second signal, and the frequency bands of the first signal and the second signal are different, wherein the transmitting module comprises: 9 . : a power amplifying unit, connected to the radio frequency transceiver and the first receiving module respectively, and configured to perform power amplifying processing on the first signal and the second signal output by the radio frequency transceiver; a first filtering unit, connected to the power amplifying unit and the switch module respectively, and used for filtering the power amplified first signal, and outputting the filtered first signal to the switch module , and filter the first signal from the antenna and transmit it to the first receiving module through the power amplifying unit; A second filtering unit, connected to the power amplifying unit, the first receiving module, and the switching module respectively, is used for filtering the power amplified second signal, and filtering the filtered second signal. The second signal is output to the switch module, and the second signal from the antenna is filtered and transmitted to the first receiving module. 9. The radio frequency system according to claim 8, wherein the power amplifying unit is configured with a third output port, a fourth output port and an auxiliary port, and the power amplifying unit comprises: a first power amplifier, the input end of the first power amplifier is connected to the radio frequency transceiver, and is used for performing power amplification processing on the first signal; a second power amplifier, the input end of the second power amplifier is connected to the radio frequency transceiver, the input end of the second power amplifier is connected to the fourth output port, and is used to power the second signal enlarge processing; The switch unit is respectively connected with the output end of the first power amplifier, the auxiliary port and the third output port. 10. A communication device, comprising: the radio frequency system according to any one of claims 1-9.

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