CN217406537U

CN217406537U - Radio frequency system and communication device

Info

Publication number: CN217406537U
Application number: CN202220912167.5U
Authority: CN
Inventors: 张亭; 仝林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-09-09
Anticipated expiration: 2032-04-19

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

Radio frequency system and communication device

Technical Field

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

Background

With the development and progress of the technology, the mobile communication technology is gradually applied to communication devices, such as mobile phones, etc., which have built-in radio frequency systems. A Non-independent networking mode (NSA) may be supported in a conventional radio frequency system to be compatible with an independent networking mode (SA). When the rf system operates in the SA mode, additional rf components (e.g., power amplifier in the transmit path) are idle, which is not favorable for the miniaturization of the rf system.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a radio frequency system and communication equipment, which can realize the downlink 4 x 4MIMO receiving function of radio frequency signals, does not need to support NSA and is compatible with an SA mode radio frequency system, can reduce the cost and is beneficial to realizing the miniaturization design of products.

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,

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

the transmitting module is also connected with the radio frequency transceiver and the first receiving module respectively, and 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 module is configured with a first antenna port and a second antenna port, and the first receiving module includes a first receiving circuit and a second receiving circuit, and the first receiving circuit is connected to a transmitting module through the first antenna port and is configured to receive the radio frequency signal from the first antenna; the second receiving circuit is connected with a third antenna through the second antenna port and is used for receiving and processing the radio-frequency signal from the third antenna;

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, the third receiving circuit passes through the third antenna port and the switch module is connected for receiving the radio frequency signal from the second antenna, and the fourth receiving circuit passes through the fourth antenna port and the fourth antenna, and is used for receiving the radio frequency signal from the fourth antenna.

The embodiment of the application provides communication equipment, which comprises the radio frequency system.

Above-mentioned radio frequency system and communication equipment, the radio frequency system includes: the antenna comprises 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 radio frequency signals output by the radio frequency transceiver and transmit the radio frequency signals from a first antenna to the first receiving module; the first receiving module comprises a first receiving circuit and a second receiving circuit, the first receiving circuit is connected with the transmitting module through the first antenna port and is used for receiving and processing the radio frequency signal from the first antenna; the second receiving circuit is connected with the third antenna through a second antenna port and is used for receiving and processing the radio-frequency signal from the third antenna; the second receiving module comprises a third receiving circuit and a fourth receiving circuit, the third receiving circuit is connected with the switch module through a third antenna port and used for receiving and processing the radio-frequency signals from the second antenna, and the fourth receiving circuit is connected with the fourth antenna through a fourth antenna port and used for receiving and processing the radio-frequency signals from the fourth antenna. The radio frequency system can support the receiving of 4-stream data by respectively configuring two receiving circuits in the first receiving module and the second receiving module, thereby realizing the downlink 4 x 4MIMO receiving function of the radio frequency signal, enabling the radio frequency system to work only in an SA mode without arranging a radio frequency system which supports NSA and is compatible with the SA mode, reducing the development of additional 2-stream data, reducing the research and development and material cost, saving the space occupied by the radio frequency system and being beneficial to realizing the miniaturization design of products.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of an exemplary RF system;

FIG. 2 is a second block diagram of the RF system according to one embodiment;

FIG. 3 is a third block diagram of an exemplary RF system;

FIG. 4 is a block diagram of the RF system in one embodiment;

FIG. 5 is a block diagram of an embodiment of an RF system;

FIG. 6 is a sixth block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 7 is a seventh block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 8 is an eighth schematic block diagram of an exemplary RF system;

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

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a plurality" means at least one, e.g., one, two, etc., unless explicitly specified otherwise.

The radio frequency system according to the embodiment of the present application may be applied to a communication device with a wireless communication function, where 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 User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a communication device.

As shown in fig. 1, in one embodiment, the present application provides a radio frequency system, including: a radio frequency transceiver 10, a transmission module 20, a first receiving module 30, a second receiving module 40, and a switch module 50. 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 manner, and two first ends of the switch module 50 are respectively connected to the first antenna ANT1 and the second antenna ANT2 in a one-to-one correspondence manner. The transmitting module 20 and the second receiving module 40 may 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 rf transceiver 10 and the first receiving module 30, respectively, and is configured to transmit the rf signal output by the rf transceiver 10 and transmit the rf signal from the antenna to the first receiving module 30. The transmit module 20 may support transmit processing of radio frequency signals. For example, the transmitting module 20 may be configured to perform power amplification on a radio-frequency signal output by the radio-frequency transceiver 10, and switch and output the radio-frequency signal after the power amplification to the first antenna ANT1 and the second antenna ANT2 through the switching 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 and output the radio-frequency signal after the filtering processing 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 convenience of illustration, in the embodiment of the present application, a radio frequency signal is taken as an example of a 5G NR signal, where the radio frequency signal may be a single-band 5G NR signal, or may include multiple bands of 5G NR signals.

The first receiving module 30 is configured with a first antenna port and a second antenna port, and the first receiving module 30 includes a first receiving circuit 310 and a second receiving circuit 320, where each of the first receiving circuit 310 and the second receiving circuit 320 may be configured to support receiving processing of a radio frequency signal. The first receiving circuit 310 is connected to the transmitting module 20 through the first antenna port. Specifically, the transmitting module 20 may receive the rf signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50, and transmit the received rf signal to the first receiving circuit 310 through the first antenna port, and the first receiving circuit 310 may receive the rf signal from the first antenna ANT1 or the second antenna ANT 2. The second receiving circuit 320 is connected to the third antenna ANT3 through the second antenna port, and is configured to perform receiving processing on the radio frequency signal from the third antenna ANT 3. For example, the transmitting module 20 may transmit the rf signal output by the rf transceiver and transmit the rf signal to the free space via the first antenna ANT1, and the first receiving circuit 310 may receive the rf signal from the first antenna ANT1 via the first antenna port, the transmitting module 20 and the switch module 50.

A second receiving module 40 configured with a third antenna port and a fourth antenna port, the second receiving module 40 comprising a third receiving circuit 410 and a fourth receiving circuit 420. The third receiving circuit 410 is connected to the switch module 50 through a third antenna port, and is configured to receive and process the radio frequency signal from the antenna. The fourth receiving circuit 420 is connected to the fourth antenna ANT4 through the fourth antenna port, and is configured to perform receiving processing on the radio frequency signal from the fourth antenna ANT 4.

The first receiving module 30 and the second receiving module 40 may be a multi-channel multi-mode Low Noise Amplifier module (LNA bank), which may be abbreviated as LNA bank devices. 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. The first antenna port, the second antenna port, the third antenna port and the fourth antenna port are respectively a radio frequency terminal or a lead terminal on the LNA bank device.

Note that the first receiving circuit 310 may perform reception processing on a radio frequency signal from one of the first antenna ANT1 and the second antenna ANT2, and the third receiving circuit 410 may perform reception processing on a radio frequency signal from the other of the first antenna ANT1 and the second antenna ANT 2. The first receiving circuit 310 and the third receiving circuit 410 may respectively receive rf signals from different antennas, and simultaneously support receiving processing of the rf signals.

In the embodiment of the present application, the first antenna ANT1, the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4 may support transceiving of radio frequency signals of different frequency bands. Each branch antenna may be formed using any suitable type of antenna. For example, each branch antenna may include an antenna with a resonating element formed from the following antenna structure: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for different frequency bands and frequency band combinations. In the 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: the radio frequency transceiver 10, the transmitting module 20, the first receiving module 30, the second receiving module 40 and the switch module 50, wherein the transmitting module 20 can transmit 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 a first antenna port, and is configured to receive and process a radio frequency signal from an antenna; the second receiving circuit 320 is connected to the third antenna ANT3 through the second antenna port, and is configured to perform receiving processing on the radio frequency signal from the third antenna ANT 3; 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 through a third antenna port for receiving the rf signal from the antenna, and the fourth receiving circuit 420 is connected to the fourth antenna ANT4 through a fourth antenna port for receiving the rf signal from the fourth antenna ANT 4. 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, so that a downlink 4 × 4MIMO receiving function of a radio frequency signal can be realized, the radio frequency system can be supported to operate only in the SA mode, and a radio frequency system supporting the NSA mode and compatible with the SA mode is not required to be provided, so that the development of additional 2-stream data can be reduced, the development and material costs can be reduced, the space occupied by the radio frequency system can be saved, and the product miniaturization design can be favorably realized. The 5G NSA standard specified by 3GPP adopts LTE and 5G NR new air interface dual connectivity (EN-DC), and uses 4G as an anchor point of a control plane, a 4G base station (eNB) as a master station, a 5G base station (gNB) as a slave station, and a 4G core network. The C-plane is responsible for processing control signals, i.e. managing call connections, and the U-plane is responsible for processing voice signals, i.e. managing call contents. In the NSA mode, the 5G network can be connected only by connecting 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 fourth receiving circuit includes a fourth low noise amplifier 421. It should be noted that, the number of the first antenna port, the second antenna port, the third antenna port, and the fourth antenna port is 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 illustration, the rf signal is a single-band signal, such as N1 or N41. It should be noted that the radio frequency signal may also be a 5G NR signal in a low frequency band, an intermediate frequency band, or a high 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 configured to perform low noise amplifier processing on the radio frequency signal received by the first antenna port. It is understood that the first low noise amplifier 311 may receive the rf 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 the rf signal to support a first receiving processing (or a main set receiving processing) on the rf signal. The transmitting module 20 may perform filtering processing on 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, and is configured to perform low noise amplifier processing on the radio frequency signal received by the second antenna port. It is understood that the second low noise amplifier 321 may be connected to the third antenna ANT3 via the second antenna ANT2, and therefore, the second low noise amplifier 321 may perform low noise amplification processing on the radio frequency signal from the third antenna ANT3 to support second receive processing (or main set MIMO receive processing) on 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, and is configured to perform low noise amplifier processing on the radio frequency signal received by the third antenna port. It is understood that the third lna 411 may receive the rf signal from the second antenna ANT2 via the third antenna port and the switching module 50, and perform low noise amplification processing on the rf signal to support third path reception processing (or diversity reception processing) on the rf signal.

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, and is configured to perform low noise amplifier processing on the radio frequency signal received by the fourth antenna port. It is understood that the fourth low noise amplifier 421 may be connected to the fourth antenna ANT4 through the port of the fourth antenna ANT4, and thus, the fourth low noise amplifier 421 may perform low noise amplification processing on the radio frequency signal from the fourth antenna ANT4 to support fourth reception processing (or diversity MIMO reception processing) on the radio frequency signal.

In this embodiment, the first receiving module 30 is provided with two low noise amplifiers, which can simultaneously support the low noise amplification processing of the two rf signals to support the receiving processing of the two rf signals, and the second receiving module 40 is provided with two low noise amplifiers, which can simultaneously support the low noise amplification processing of the two rf signals to support the receiving processing of the two rf signals. Obviously, the first receiving module 30 and the second receiving module 40 are provided with four low noise amplifiers in total, which can cooperate to support four ways of receiving the radio frequency signal, and compared with a radio frequency system supporting the NSA working mode, each receiving module can be provided with two less low noise amplifiers, so that the cost can be reduced, the area occupied by the low noise amplifiers can be reduced, and the miniaturization design of the radio frequency system is facilitated.

With continued reference 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 rf terminals on the LNA bank device, and can be used for connecting with the rf 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 to the output end of the first low noise amplifier 311 and the output end of the second low noise amplifier 321 in a one-to-one correspondence manner, and 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 manner. The first low noise amplifier 311 and the second low noise amplifier 321 can selectively output the rf signal to the rf transceiver 10 through the first rf switch 330. The second receiving module 40 further includes a second rf switch 430, two first ends of the second rf 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 manner, and two second ends of the first rf switch 330 are respectively connected to two second output ports in a one-to-one correspondence manner. The third and fourth

low noise amplifiers

411 and 421 can selectively output the rf signal to the rf transceiver 10 through the second rf switch 430.

Alternatively, the first rf switch 330 and the second rf switch 430 may be respectively a Multiplexer (Multiplexer) or a double-pole double-throw switch.

In the embodiment of the present application, by disposing the first rf switch 330 in the first receiving module 30 and disposing the second rf switch 430 in the second receiving module 40, the transmission paths from different lna outputs to the rf transceiver 10 can be increased to expand the receiving link of the rf system, and further, the receiving performance of the rf signal to the rf signal can be improved.

As shown in fig. 3, in one embodiment, the rf system further includes a first filtering module 60 and a second filtering module 70. The first filtering module 60 is connected to the first receiving module 30 and the third antenna ANT3, respectively, and is configured to support filtering processing of the radio frequency signal from the third antenna ANT 3. Specifically, the first filtering module 60 may transmit the filtered rf signal to the first receiving module 30, and the first receiving module 30 performs low noise amplification on the filtered rf signal and outputs the amplified rf signal to the rf transceiver 10, so as to implement receiving processing on the rf signal. The second filtering module 70 is connected to the second receiving module 40, the switch module 50, and the fourth antenna ANT4, and is configured to support filtering processing of the radio frequency signal from the antenna, transmit the filtered radio frequency signal to the second receiving module 40, perform low noise amplification processing on the filtered radio frequency signal by the second receiving module 40, and output the low noise amplification processed radio frequency signal to the radio frequency transceiver 10, so as to implement receiving 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 rf signal. For example, if the radio frequency signal includes only a single-band 5G NR signal, the number of the first filters is one, and if the radio frequency signal includes two bands of 5G NR signals, the number of the first filters is two, and the two first filters may respectively perform filtering processing on the two bands of 5G NR signals to filter out stray waves, so as to respectively output the two bands of 5G NR signals correspondingly. The second filtering module 70 may include two filtering circuits, wherein each filtering circuit may include at least one second filter, and the number of the second filters is the same as the number of frequency bands included in the radio frequency signal. For example, if the radio frequency signal includes only a single-band 5G NR signal, the number of the second filters is one, and if the radio frequency signal includes two bands of 5G NR signals, the number of the second filters is two, and the two second filters may respectively perform filtering processing on the two bands of 5G NR signals to filter out stray waves, so as to respectively output the two bands of 5G NR signals correspondingly.

In one embodiment, as shown in fig. 4, for convenience of illustration, the rf signal may comprise a single band 5G NR signal, such as an N41 band signal.

The first filter 610 and the two second filters 710 can both support the filtering processing of the N41 frequency signal, and filter out the stray waves outside the N41 frequency band, so as to output only the N41 frequency band signal. The first filter 610 may filter a signal from the third antenna ANT3 to output a signal of the N41 band to the second lna 321, and output the signal to the rf transceiver 10 after performing lna processing. A second filter 710 may filter the signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50 to output the N41 band signal to the third low noise amplifier 411, and output the signal to the rf transceiver 10 after the signal is processed by the low noise amplifier. Another second filter 710 may filter the signal from the fourth antenna ANT4 to output the N41 band signal to the fourth lna 421, and output the signal to the rf transceiver 10 after lna processing.

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 convenience of illustration, the rf signal may include a dual-band 5G NR signal, which may be referred to as a first signal and a second signal, respectively, where the first signal is an N41 band signal, and the second signal is an N1 band signal. Wherein, the quantity of first antenna port, second antenna port, third antenna port and fourth antenna port is two respectively. The number of the first filters 610 is two, and each filtering unit may include two second filters 710. The two first filters 610 and the two second filters 710 may respectively implement filtering processing on the N1 and N41 frequency band signals to filter out stray waves, and only output the N1 and N41 frequency band signals.

Alternatively, the two first filters 610 may be first dual band filters 601, wherein one filtering circuit may include a second dual band filter 701 and the other filtering circuit may include a third dual band filter 702. 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 manner, and a second end of the first dual band filter 601 is connected to the third antenna ANT 3. Two first ends of the second dual-band filter 701 are respectively connected with a third antenna port and a fourth antenna port in a one-to-one correspondence manner, and a second end of the second dual-band filter 701 is connected with a first end of the switch module 50; 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 manner, and a second end of the second dual band filter 701 is connected to the fourth antenna ANT 4.

The input terminals of the first low noise amplifier 311 are connected to two first antenna ports, respectively, and the output terminal 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 may be connected to the transmitting module 20 through a first antenna port, so as to receive the first signal from the first antenna ANT1 through the switch module 50, and perform low noise amplification on the first signal, so as to implement main set reception of the first signal; the input end of the first low noise amplifier 311 may further receive a second signal from the third antenna ANT3 through another first antenna port and the first dual band filter 601, and perform low noise amplification processing on the second signal, so as to implement dominant set MIMO reception on the second signal.

The input terminals of the second low noise amplifier 321 are respectively connected to the two second antenna ports, and the output terminal 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 may 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 the second signal, so as to implement dominant set reception on the second signal; the input of the second low noise amplifier 321 may 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 the first signal, so as to implement diversity MIMO reception on the first signal.

The input terminals of the third low noise amplifier 411 are connected to two third antenna ports, respectively, and the output terminal of the third low noise amplifier 411 is connected to the rf transceiver 10. Specifically, the input end of the second low noise amplifier 321 may receive the first signal from the second antenna ANT2 through a third antenna port, the second dual band filter 701 and the switch module 50, and perform low noise amplification processing on the first signal, so as to implement diversity reception of the first signal; the input of the third low noise amplifier 411 may further receive a second signal from the fourth antenna ANT4 through another third antenna port and the third dual-band filter 702, and perform low noise amplification processing on the second signal, so as to implement diversity MIMO reception on the second signal.

The input terminals of the fourth low noise amplifier 421 are connected to the two fourth antenna ports, respectively, and the output terminal of the fourth low noise amplifier 421 is connected to the rf transceiver 10. Specifically, the input end of the fourth low noise amplifier 421 may receive the second signal from the second antenna ANT2 through a fourth antenna port, the second dual band filter 701, and the switch module 50, and perform low noise amplification processing on the second signal, so as to implement diversity reception on the second signal; the input of the fourth low noise amplifier 421 may also receive the first signal from the fourth antenna ANT4 through another fourth antenna port, and perform low noise amplification processing on the first signal, so as to implement the main set MIMO reception on the first signal.

In the embodiment of the present application, by providing the first filtering module 60 and the second filtering module 70, filtering processing of each rf signal (the second signal and the first signal) from the antenna can be performed, and without adding a low noise amplifier, a 4 × 4MIMO function for 5G NR signals of multiple bands can be supported, and reception performance for the multiband 5G NR signals can be improved.

In one embodiment, the first filtering module may be built into the first receiving module. Alternatively, the second filtering module may be built in the second receiving module. At least one of the first filtering module and the second filtering module is built in the corresponding receiving module, so that the integration level of the radio frequency system can be further improved, and the miniaturization design of the radio frequency system is further facilitated.

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, and is configured to perform power amplification on the radio frequency signal output by the radio frequency transceiver 10. The Power Amplifier may be a multi-mode multi-band Power Amplifier (MMPA), which is abbreviated as an MMPA device. At least one power amplifier can be arranged in the power amplifier 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, and configured to filter the power amplified radio frequency signal, output the filtered radio frequency signal to the switch module 50, and transmit the filtered radio frequency signal from the antenna to the first receiving module 30 through the power amplifying unit 210. Illustratively, the filtering unit 220 may include a filter disposed on the rf path between the power amplifying unit 210 and the switching module 50. The filter may 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 may further receive a signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50, filter the signal, and transmit the filtered rf signal to the first receiving module 30 through the power amplifying unit 210, so that the first receiving module 30 receives the rf signal.

As shown in fig. 6, in one embodiment, the transmitting module 20 includes a power amplifying unit 210 and a filtering unit 220. Unlike the previous embodiment, the filtering is respectively connected to the power amplifying unit 210, the first receiving module 30, and the switch module 50, and the power amplifying unit 210 is not connected to the first receiving module 30 and is independent of the first receiving module 30. 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 transmit the filtered radio frequency signal from the antenna to the first receiving module 30. For example, the filtering unit 220 may include two filters respectively disposed on the transmission path and the reception path of the radio frequency signal. One of the filters may perform filtering processing on 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 may receive the signal from the first antenna ANT1 or the second antenna ANT2 through the switch module 50, perform filtering processing on the signal, and transmit the filtered radio frequency signal to the first receiving module 30, so that the first receiving module 30 implements receiving processing on 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 terminal of the second power amplifier 212 via the fourth output port, another first end of the duplexer is connected to the input terminal of the first low noise amplifier 311 via a first antenna port, and a second end of the duplexer is connected to the switching module 50. For example, the switch module 50 may be a DP4T switch or a DP3T switch.

In this embodiment, the transmitting module 20 may support power amplification and filtering processing on a radio frequency signal, so as to support transmission processing on the radio frequency signal, and meanwhile, the transmitting module 20 may also perform filtering processing on a radio frequency signal from an antenna, and further transmit the radio frequency signal after the filtering processing to the first receiving module 30, and the transmitting module 20 may also implement receiving and transmitting on the radio frequency signal, and may implement filtering processing on radio frequency signals on a receiving path and a transmitting path, thereby further improving the integration level of the radio frequency system.

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 a second filtering unit 240. The power amplifying unit 210 is connected to the radio frequency transceiver 10 and the first receiving module 30, and is configured to perform power amplification 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, and configured to filter the first signal after power amplification, output the first signal after filtering to the switch module 50, and transmit the first signal from the antenna to the first receiving module 30 through the power amplifying unit 210 after filtering. The second filtering unit 240 is connected to the power amplifying unit 210, the first receiving module 30, and the switch module 50, and configured to filter the second signal after power amplification, output the second signal after filtering to the switch module 50, and transmit the second signal from the antenna to the first receiving module 30 after filtering.

It should be noted that, the second filtering unit 240 and the second filtering unit 240 may have parameters like the filtering unit 220 in fig. 5 and fig. 6, which are not described herein again.

With continued reference to fig. 8, in one embodiment, the power amplification 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 may serve as radio frequency terminals of the MMPA device. The third and fourth output ports can be used for connecting with the radio frequency transceiver 10, and the auxiliary port can be connected with the outside. Wherein the power amplifying unit 210 includes a first power amplifier 211, a second power amplifier 212, and a switching unit 213. The switch unit 213 is connected to the output terminal of the first power amplifier 211, the auxiliary port, and the third output port. Illustratively, the switch unit 213 may be a single pole double throw switch. The input terminal of the first power amplifier 211 is connected to the radio frequency transceiver 10, and is configured to perform power amplification processing on the first signal. The input terminal of the second power amplifier 212 is connected to the radio frequency transceiver 10, and the input terminal of the second power amplifier 212 is connected to the fourth output port, and is configured to perform power amplification processing on the second signal.

Specifically, the first power amplifier 211 may perform power amplification on the first signal, transmit the first signal after the power amplification to the first filtering unit 230, and transmit the first signal after the filtering to the first antenna ANT1 or the second antenna ANT2 through the switching module 50, so as to implement the transmission processing on the first signal. The first signal switchable module 50 from the first antenna ANT1 or the second antenna ANT2 may be transmitted to the first filtering unit 230, and the filtered first signal may be transmitted to the low noise amplifier in the first receiving module 30 through the third antenna port, the switching unit 213 and the auxiliary port, and the first signal after low noise amplification processing is transmitted to the radio frequency transceiver 10, so as to implement the receiving processing of the first signal. The second power amplifier 212 may perform power amplification processing on the second signal, transmit the second signal after the power amplification processing to the second filtering unit 240, and transmit the second signal after the filtering processing to the first antenna ANT1 or the second antenna ANT2 through the switch module 50, so as to implement the transmission processing on the second signal. The second signal switchable module 50 from the first antenna ANT1 or the second antenna ANT2 may be transmitted to the second filtering unit 240, and the filtered second signal may be transmitted to the low noise amplifier in the first receiving module 30, and the low noise amplified second signal may be transmitted to the rf transceiver 10, so as to implement the receiving process 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 the filtering units 220 into the power amplifying unit 210, the integration level of the rf system can be further improved, which is further beneficial to the miniaturization of the rf system.

For convenience of illustration, the first signal is an N41 band signal, and the second signal is an N1 band signal, for example, to explain the operation principle of the rf signal in the SA mode.

N41 SA mode:

for the N41 transmit path, the N41 band signal is output from the third output port (e.g., high frequency HB port) of the first power amplifier, enters the B41 filter 230, and is transmitted by the first antenna ANT1 via the switch module 50 (e.g., DP4T switch).

For the N41 receiving path, the primary set receiving PRx signal of N41 is received by the first antenna ANT1, sent to the N41 PRx filter 230 through the switch module 50, transmitted to the first low noise amplifier 311 through the switch unit 213, amplified by low noise, and output to the radio frequency transceiver 10 for demodulation. The diversity reception 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, and after filtering, the signal is transmitted to the third low noise amplifier 411, and after low noise amplification, the signal is output to the rf 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, and the filtered N41 PRx MIMO signal is sent to the fourth low noise amplifier 421, amplified by low noise, and then output to the rf transceiver 10 for demodulation. The DRx MIMO signal of N41 is received by the third antenna ANT3, and is sent to the N41 DRx MIMO filter 601 for filtering, and the filtered N41 DRx MIMO signal is transmitted to the second low noise amplifier 321, amplified by low noise, and output to the rf transceiver 10 for demodulation.

N1 SA mode:

for the N1 transmit path, the N1 band signal is output from the fourth output port (e.g., the mid-frequency MB port) of the second power amplifier, enters the N1 filter 240, and is transmitted by the first antenna ANT1 via the switch module 50 (e.g., the DP4T switch).

For the N1 receiving path, the PRx signal received by the primary set of N1 is received by the first antenna ANT1, and then sent to the N1 PRx filter 240 through the switch module 50, after filtering, the signal is output to the second low noise amplifier 321, and after low noise amplification, the signal is output to the rf transceiver 10 for demodulation. The diversity reception 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, filtered, transmitted to the fourth low noise amplifier 421, amplified by low noise, and output to the rf transceiver 10 for demodulation. The PRx MIMO signal of N1 is received by the third antenna ANT3, and is sent to the N1 PRx MIMO filter 601 for filtering, and the filtered N1 PRx MIMO signal is transmitted to the first low noise amplifier 311, and is output to the radio frequency transceiver 10 for demodulation after low noise amplification. The DRx MIMO signal of N1 is received by the fourth antenna ANT4, and sent to the N1 DRx MIMO filter 702 for filtering, and the filtered DRx MIMO signal of N1 is sent to the third low noise amplifier 411, amplified by low noise, and then output to the rf transceiver 10 for demodulation.

The radio frequency system can work in an SA working mode, can realize an uplink function and a downlink 4 x 4MIMO receiving function of a first signal and a second signal, only works in the SA mode, and is compatible with the SA mode compared with the radio frequency system which supports the NSA mode in the related technology, so that the development of additional 2-stream data can be reduced, the research and development and material cost can be reduced, the space occupied by the radio frequency system can be saved, and the miniaturization design of products can be realized.

The embodiment of the application further provides a communication device, and the communication device is provided with the radio frequency system in any embodiment. By arranging the radio frequency system on the communication equipment, the uplink function and the downlink 4 x 4MIMO receiving function of the first signal and the second signal can be realized, the radio frequency system only works in an SA mode, and compared with the prior art that the radio frequency system supporting an NSA mode is adopted to be compatible with the SA mode, the development of additional 2-stream data can be reduced, the research and development cost and the material cost can be reduced, the space occupied by the radio frequency system can be saved, and the miniaturization design of products can be realized.

As shown in fig. 9, further taking the communication device as an example of a mobile phone 11, specifically, as shown in fig. 9, the mobile phone 11 may include a memory 21 (which optionally includes one or more computer-readable storage media), a processing circuit 22, a peripheral device interface 23, a radio frequency system 24, and an input/output (I/O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. It will be appreciated by those skilled in the art that the handset 11 shown in figure 9 does not constitute a limitation of the handset and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. The various components shown in fig. 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.

The 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. Illustratively, the software components stored in memory 21 include an operating system 211, a communications module (or set of instructions) 212, a Global Positioning System (GPS) module (or set of instructions) 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 circuitry 22 may be configured to implement a control algorithm that controls the use of the antenna in the handset 11. The processing circuitry 22 may also issue control commands or the like for controlling switches in the radio frequency system 24.

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

The rf system 24 may be the rf system of any of the previous embodiments.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

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 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, the third receiving circuit passes through the third antenna port and the switch module is connected for receiving the radio-frequency signal from the second antenna, and the fourth receiving circuit passes through the fourth antenna port and the fourth antenna connection for receiving the radio-frequency signal from the fourth antenna.

2. The radio frequency system of claim 1, further comprising:

the first filtering module is respectively connected with the first receiving module and the third antenna and is used for supporting filtering processing of the radio-frequency signal from the third antenna;

and the second filtering module is respectively connected with the second receiving module, the switch module and the fourth antenna, and is used for supporting filtering processing of the radio-frequency signal from the antenna and outputting the radio-frequency signal after filtering processing 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 number of the first antenna port, the second antenna port, the third antenna port and the fourth antenna port is two respectively;

the first filtering module comprises a first dual-band filter, wherein two first ends of the first dual-band filter are respectively connected with one first antenna port and one second antenna port in a one-to-one correspondence manner, and a second end of the first dual-band filter is connected with the third antenna;

the second filtering module comprises a second dual-band filter and a third dual-band filter, wherein two first ends of the second dual-band filter are respectively connected with a third antenna port and a fourth antenna port in a one-to-one correspondence manner, and a second end of the second dual-band filter is connected with a first end of the switch module; and two first ends of the third dual-band filter are respectively connected with the other third antenna port and the other fourth antenna port in a one-to-one correspondence manner, and a second end of the second dual-band filter is connected with the fourth antenna.

4. The radio frequency system according to claim 3, wherein the first receiving circuit includes a first low noise amplifier, inputs of the first low noise amplifier are respectively connected to two first antenna ports, and an output of the first low noise amplifier is connected to the radio frequency transceiver, for performing low noise amplifier processing on the radio frequency signal received by the first antenna ports;

the second receiving circuit comprises a second low noise amplifier, the input end of the second low noise amplifier is respectively connected with the two second antenna ports, and the output end of the second low noise amplifier is connected with the radio frequency transceiver and is used for performing low noise amplifier processing on the radio frequency signal received by the second antenna port;

the third receiving circuit comprises a third low noise amplifier, the input end of the third low noise amplifier is respectively connected with the two third antenna ports, and the output end of the third low noise amplifier is connected with the radio frequency transceiver and is used for carrying out low noise amplifier processing on the radio frequency signal received by the third antenna port;

the fourth receiving circuit comprises a fourth low noise amplifier, the input end of the fourth low noise amplifier is respectively connected with the two fourth antenna ports, and the output end of the fourth low noise amplifier is connected with the radio frequency transceiver and used for carrying out low noise amplifier processing on the radio frequency signals received by the fourth antenna ports.

5. The radio frequency system according to claim 4, wherein the first receiving module is further configured with a plurality of first output ports, the second receiving module is further configured with a plurality of second output ports;

the first receiving module further comprises 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 in a one-to-one correspondence manner, and two second ends of the first radio frequency switch are respectively connected with two first output ports in a one-to-one correspondence manner;

the second receiving module further comprises 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 in a one-to-one correspondence manner, and two second ends of the first radio frequency switch are respectively connected with two second output ports in a one-to-one correspondence manner.

6. The radio frequency system according to claim 1, wherein the transmission module comprises:

the power amplification unit is respectively connected with the radio frequency transceiver and the first receiving module and is used for performing power amplification processing on the radio frequency signal output by the radio frequency transceiver;

and the filtering unit is respectively connected with the power amplifying unit and the switch module and is used for filtering the radio-frequency signal after power amplification, outputting the radio-frequency signal after filtering to the switch module, and transmitting the radio-frequency signal from an antenna to the first receiving module through the power amplifying unit after filtering.

7. The radio frequency system of claim 1, wherein the transmission module comprises:

the power amplification units are respectively connected with the radio frequency transceivers and are used for performing power amplification processing on the radio frequency signals output by the radio frequency transceivers;

and the filtering unit is respectively connected with the power amplifying unit, the first receiving module and the switch module, and is used for filtering the radio-frequency signal after power amplification, outputting the radio-frequency signal after filtering to the switch module, and transmitting the radio-frequency signal from the antenna to the first receiving module after filtering.

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:

the power amplification unit is respectively connected with the radio frequency transceiver and the first receiving module and is used for performing power amplification processing on the first signal and the second signal output by the radio frequency transceiver;

the first filtering unit is respectively connected with the power amplifying unit and the switch module, and is used for filtering the first signal after power amplification, outputting the first signal after filtering to the switch module, and transmitting the first signal from an antenna to the first receiving module through the power amplifying unit after filtering;

and the second filtering unit is respectively connected with the power amplifying unit, the first receiving module and the switch module, and is used for filtering the second signal after power amplification, outputting the second signal after filtering to the switch module, and transmitting the second signal from the antenna to the first receiving module after filtering.

9. The radio frequency system according to claim 8, wherein the power amplification unit is configured with a third output port, a fourth output port, and an auxiliary port, the power amplification unit comprising:

the input end of the first power amplifier is connected with the radio frequency transceiver and is used for performing power amplification processing on the first signal;

the input end of the second power amplifier is connected with the radio frequency transceiver, and the input end of the second power amplifier is connected with the fourth output port and used for performing power amplification processing on the second signal;

and 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 of any one of claims 1-9.