WO2021143756A1

WO2021143756A1 - Radio frequency system and electronic device

Info

Publication number: WO2021143756A1
Application number: PCT/CN2021/071720
Authority: WO
Inventors: 陈宪龙; 杨金胜
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-01-17
Filing date: 2021-01-14
Publication date: 2021-07-22

Abstract

The present application provides a radio frequency system and an electronic device, comprising a radio frequency transceiver, a radio frequency processing circuit, a transfer switch module, a first antenna, and a second antenna; the radio frequency processing circuit comprises a first emission module, a second emission module, a primary receive module, a diversity receive module, a first multiplexer, a second multiplexer, and a directional coupler; the radio frequency system is used for implementing EN-DC dual connectivity communication of a first low frequency band and a second low frequency band. In being able to use two multiplexers and a combination radio frequency circuit design, and using special devices to achieve an antenna combining design, two antennas are able to complete double low frequency band non-standalone networking, greatly increasing the usability of double low frequency band non-standalone networking in electronic devices.

Description

RF system and electronic equipment

Technical field

This application relates to the field of radio frequency technology, in particular to a radio frequency system and electronic equipment.

Background technique

With the widespread application of smart phones and other electronic devices, smart phones can support more and more applications, with more and more powerful functions. Smart phones are developing in a diversified and personalized direction and become an indispensable electronic product in users’ lives. . Electronic devices in the 4th Generation (4G) mobile communication system generally adopt a single-antenna or dual-antenna radio frequency system architecture. The radio frequency framework of 4G scheme is relatively simple, including transmitting device, receiving device, switch and antenna. The transmitting device may include a low-band (LB) transmitting module and a middle-high-band (MHB) transmitting module, and the receiving device may include a primary receive (PRX) module and a diversity receive (DRX) module. ) Module.

Dual low-band non-independent networking means that the 4G low-frequency band and the 5G low-frequency band work together, requiring two power amplifiers to work at the same time to transmit signals, and both the 4G low-frequency band and the 5G low-frequency band require two antennas, so 4 antennas are required . However, the size of the low-band antenna is too large, and small electronic devices cannot accommodate 4 antennas.

Summary of the invention

Based on the above problems, this application proposes a radio frequency system and electronic equipment, which can adopt two multiplexers and combined radio frequency circuit design, and use special devices for combined antenna design, so that two antennas can complete dual low frequency independent Networking greatly improves the versatility of dual-low-band non-independent networking on electronic equipment.

In the first aspect, an embodiment of the present application provides a radio frequency system, and the radio frequency system includes:

A radio frequency transceiver, a radio frequency processing circuit, a switch module, a first antenna and a second antenna, the radio frequency transceiver is connected to the radio frequency processing circuit, and the radio frequency processing circuit is connected to the first antenna through the switch module An antenna is connected to the second antenna;

The radio frequency processing circuit includes a first transmitting module, a second transmitting module, a main receiving module, a diversity receiving module, a first multiplexer, a second multiplexer, and a directional coupler;

The first port of the radio frequency transceiver is connected to the first port of the first transmitting module, and the second port of the first transmitting module is connected to the first port of the first multiplexer. The second port of the multiplexer is connected to the switch module through the directional coupler, the third port of the first multiplexer is connected to the third port of the diversity receiving module, the diversity receiving module The first port of the radio frequency transceiver is connected to the third port of the radio frequency transceiver, the second port of the diversity receiving module is connected to the switch module, and the second port of the radio frequency transceiver is connected to the second transmitting module The second port of the second transmitter module is connected to the third port of the second multiplexer, and the third port of the second transmitter module is connected to the second port of the second multiplexer. Two ports, the fourth port of the second transmitting module is connected to the switch module, the fifth port of the second transmitting module is connected to the third port of the main receiving module, and the second The first port of the multiplexer is connected to the second port of the main receiver module, and the first port of the main receiver module is connected to the fourth port of the radio frequency transceiver;

The radio frequency system is used to realize EN-DC dual-connection communication in the first low-frequency band and the second low-frequency band.

In the second aspect, an embodiment of the present application provides an electronic device that includes the radio frequency system described in any one of the first aspect of the embodiments of the present application, and the radio frequency system is used to implement the first low frequency band and the second Two EN-DC dual connection communication in low frequency band.

It can be seen that in the embodiment of this application, two multiplexers and combined radio frequency circuit design can be used, and special devices are used for combined antenna design, so that two antennas can complete dual low-frequency non-independent networking, which greatly improves This improves the versatility of dual-low-band non-independent networking in electronic equipment.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a radio frequency system provided by an embodiment of the application;

FIG. 2 is a schematic structural diagram of another radio frequency system provided by an embodiment of the application;

FIG. 3 is a schematic structural diagram of a triplexer provided by an embodiment of the application;

4 is a schematic structural diagram of a quadruplexer provided by an embodiment of the application;

FIG. 5a is a schematic structural diagram of a radio frequency system with a 3P3T switch provided by an embodiment of the application;

5b is a schematic structural diagram of a radio frequency system with a DP3T switch provided by an embodiment of the application;

FIG. 5c is a schematic structural diagram of a radio frequency system in which the switch module is a combination switch of SP2T and DPDT according to an embodiment of the application;

FIG. 5d is a schematic structural diagram of a radio frequency system with a DP4T switch provided by an embodiment of the application;

FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific sequence. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally also includes Other steps or units inherent in a process, product, or equipment.

The reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

The electronic devices involved in the embodiments of this application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE) (for example, mobile phone), mobile station (Mobile Station, MS), terminal device (terminal device), and so on. For ease of description, the devices mentioned above are collectively referred to as electronic devices.

Please refer to FIG. 1, which is a schematic structural diagram of a radio frequency system according to an embodiment of the present application. The radio frequency system 100 includes a radio frequency transceiver 11, a radio frequency processing circuit 12, a switch module 13, a first antenna 141, and a second antenna. Antenna 142, the above-mentioned radio frequency transceiver 11 is connected to the above-mentioned radio frequency processing circuit 12;

Specifically, the above-mentioned radio frequency processing circuit includes a first transmitting module 121, a diversity receiving module 122, a first multiplexer 123, a directional coupler 124, a second transmitting module 125, a main receiving module 126, and a second multiplexer. A multiplexer 127, the first multiplexer 123 may be a triplexer or a quadruplexer, and the second multiplexer may be a triplexer;

The first port 111 of the radio frequency transceiver is connected to the first port 1211 of the first transmitting module 121, and the second port 1212 of the first transmitting module 121 is connected to the first port 1231 of the first multiplexer 123. The second port 1232 of the first multiplexer 123 is connected to the switch module 13 through the directional coupler 124, and the third port 1233 of the first multiplexer 123 is connected to the third port 1223 of the diversity receiving module 122, The first port 1221 of the diversity receiving module 122 is connected to the third port 113 of the radio frequency transceiver 11, the second port 1222 of the diversity receiving module 122 is connected to the switch module 13, and the second port 1222 of the radio frequency transceiver 11 is The port 112 is connected to the first port 1251 of the second transmitting module 125, and the second port 1252 of the second transmitting module 125 is connected to the third port 1273 of the second multiplexer 127. The third port 1253 is connected to the second port 1272 of the second multiplexer 127, the fourth port 1254 of the second transmitting module 125 is connected to the switch module 13, and the fifth port 1255 of the second transmitting module 125 Connected to the third port 1263 of the main set receiving module 126, the first port 1271 of the second multiplexer 127 is connected to the second port 1262 of the main set receiving module 126, and the first port 1262 of the main set receiving module 126 The port 1261 is connected to the fourth port 114 of the radio frequency transceiver 11, and the switch module 13 is connected to the first antenna 141 and the second antenna 142.

When the radio frequency system 100 is in a non-standalone (Non-Standalone, NSA) working mode, the first antenna 141 is used for the transmission of the first low frequency band, and the diversity reception of the combination of the first and second low frequency bands. The second antenna 142 is used for the transmission of the second low-frequency frequency band, and the main set reception of the combination of the first low-frequency frequency band and the second low-frequency frequency band.

In the embodiment of the present application, the NSA working mode includes any of the EN-DC, NE-DC, and NGEN-DC architectures.

Under the EN-DC architecture, the electronic equipment is connected to the 4G core network, the 4G base station is the main station, and the 5G base station is the auxiliary station;

Under the NE-DC architecture, 5G core network is introduced, 5G base station is the primary station, and 4G base station is the secondary station;

Under the NGEN-DC framework, a 5G core network is introduced, with 4G base stations as the primary station and 5G base stations as the secondary station.

Among them, DC stands for Dual Connectivity (Dual Connectivity, DC); E stands for Universal Mobile Telecommunications System (UMTS) Evolved-UMTS Terrestrial Radio Access, E-UTRA or EUTRA ), that is, 4G wireless access network; N represents (new radio, NR), that is, 5G new radio; NG represents (next generation, NG) next-generation core network, that is, 5G core network.

EN-DC refers to the dual connection of 4G wireless access network and 5G NR, NE-DC refers to the dual connection of 5G NR and 4G wireless access network, and NGEN-DC refers to the 4G wireless access network under the 5G core network and 5G NR dual connection.

For the convenience of explanation, the following non-independent networking mode takes the EN-DC architecture as an example.

Under the EN-DC architecture, the radio frequency system in the embodiments of this application supports dual low-band (low band, LB) non-independent networking, namely LB + LB NSA, LB + LB NSA refers to LB Long Term Evolution (Long Term Evolution, LTE). )+LBNR work together, it requires two power amplifiers (PA) to work at the same time to transmit signals, and both LBLTE and NR require two antennas, one antenna for transmit (TX) or primary receive (primary receive) , PRX), another antenna is used for diversity receive (diversity receive, DRX). Therefore, to realize LB+LB NSA, 4 antennas are required. Because the size of the LB antenna is too large, for small-sized electronic devices (such as mobile phones), the clearance area left for the LB antenna is small, and it is difficult to meet the clearance area requirements of 4 LB antennas at the same time. Therefore, the efficiency of 4 antennas All good LB antennas are more difficult, in order to ensure the reliability of the uplink signal. The two antennas with better antenna efficiency among the four antennas can be used for the transmission of LB LTE signals and LBNR signals.

In the embodiment of the present application, the first low-frequency frequency band may include the B20 frequency band (uplink: 832-862MHz, downlink: 791-821MHz), and the second low-frequency frequency band may include the B28 frequency band (uplink: 703-748MHz, downlink: 758-803MHz), The B28 frequency band may include the B28A frequency band (uplink: 703-733MHz, downlink: 758-788MHz), the second low frequency frequency band may also include the N28A frequency band (uplink: 703-733MHz, downlink: 758-788MHz), and the third low frequency frequency band may include N8 frequency band (uplink: 880-915MHz, downlink: 925-960MHz). It should be noted that the B28A of the 4G frequency band and the N28A of the 5G frequency band have the same frequency band range, and those of ordinary skill in the art can determine that the above two frequency bands are the same frequency band with different names under different network standards.

Under the EN-DC architecture, the first antenna 141 is used for the transmission of the B20 frequency band, the diversity reception of the combined B20 frequency band and the N28A frequency band, and the second antenna 142 is used for the transmission of the N28A frequency band, and the main set of the combination of the B20 frequency band and the N28A frequency band. take over.

In the embodiment of the present application, when the radio frequency system is in the NSA working mode,

The transmission (TX) path of the first low-frequency band includes: radio frequency transceiver 11→first transmitting module 121→first triplexer (123)→directional coupler 124→switch module 13→first antenna 141;

The diversity reception (DRX) path of the combination of the first low-frequency band and the second low-frequency band includes: the first antenna 141 → the switch module 13 → the directional coupler 124 → the first triplexer (123) → the diversity receiving module 122 →RF transceiver 11;

The transmission (TX) path of the second low-frequency band includes: radio frequency transceiver 11→second transmitting module 125→second triplexer (127)→second transmitting module 125→switch module 13→second antenna 142 ；

The main set receiving (PRX) path of the combination of the first low-frequency band and the second low-frequency band includes: the second antenna 142 → the switch module 13 → the second transmitting module 125 → the second triplexer (127) → the main set Receiving module 126→RF transceiver 11.

Optionally, when the above-mentioned radio frequency system 100 is only in the long-term evolution network LTE operating mode, the above-mentioned first antenna 141 is used for the transmission of the above-mentioned first low-frequency band and the above-mentioned second low-frequency band, and the above-mentioned first low-frequency band The main set reception and the main set reception of the second low frequency frequency band, the second antenna 142 is used for diversity reception where the first low frequency frequency band and the second low frequency frequency band are combined.

When the radio frequency system is only in LTE working mode,

The transmission (TX) path of the first low-frequency band includes: radio frequency transceiver 11→second transmitting module 125→switch module 13→first antenna 141;

The transmission (TX) path of the second low-frequency band includes: radio frequency transceiver 11→second transmitting module 125→second triplexer (127)→second transmitting module 125→switch module 13→first antenna 141 ；

The PRX path of the first low-frequency band includes: first antenna 141→switch module 13→second transmitting module 125→main receiving module 126→RF transceiver 11;

The PRX path of the second low frequency band includes: the first antenna 141→switch module 13→the second transmitting module 125→the second triplexer (127)→the second transmitting module 125→the main set Receiving module 126→RF transceiver 11;

The diversity reception (DRX) path where the first low-frequency band and the second low-frequency band are combined includes: a second antenna 142→switch module 13→diversity receiving module 122→radio frequency transceiver 11.

In a possible embodiment, as shown in FIG. 2, FIG. 2 is a schematic structural diagram of another radio frequency system provided by an embodiment of this application. It can be seen that the first multiplexer 123 is a quadruplexer, and further includes a first multiplexer. Four ports 1234, the diversity receiving module 122 further includes a fourth port 1224, the fourth port 1234 of the first multiplexer 123 is connected to the fourth port 1224 of the diversity receiving module 122, and the rest of the structure and connection The way can refer to the radio frequency system in Figure 1, which will not be repeated here;

When the radio frequency system 100 is in the non-independent networking mode, the first antenna 141 is also used for the transmission of the first low-frequency band, and the diversity reception of the combined first and third low-frequency bands. The second antenna 142 is also used for the transmission of the third low-frequency frequency band, and the main set reception of the combination of the first low-frequency frequency band and the third low-frequency frequency band.

Taking the EN-DC of B20+N8A as an example, in the embodiment of this application, when the radio frequency system is in the NSA working mode,

The transmission signal circulation path of the first low-frequency band is in sequence: radio frequency transceiver 11→first transmitting module 121→quadruplexer (123)→directional coupler 124→switch module 13→first antenna 141;

The circulation path of the diversity reception signal of the first low-frequency band and the third low-frequency band is as follows: first antenna 141→switch module 13→directional coupler 124→quadruplexer (123)→diversity receiving module 122→RF transceiver 11;

The transmission signal circulation path of the third low-frequency band is in sequence: radio frequency transceiver 11→second transmitting module 125→switch module 13→second antenna 142;

The main set of reception signal circulation paths of the first low-frequency band and the third low-frequency band include the main set of receive signal circulation paths of the first low-frequency band and the main set of receive signal circulation paths of the third low-frequency band, the main set of the first low-frequency band The receiving signal circulation path is: the second antenna 142 → the switch module 13 → the second transmitting module 125 → the third triplexer (127) → the main receiver module 126 → the radio frequency transceiver 11; the third low frequency band The main set signal circulation path is: the second antenna 142→the switch module 13→the second transmitting module 125→the main set receiving module 126→the radio frequency transceiver 11.

When the radio frequency system is in the LTE working mode,

The transmission signal circulation path of the first low-frequency band and the transmission signal circulation path of the third low-frequency band are: radio frequency transceiver 11→second transmitting module 125→switch module 13→first antenna 141;

The transmission signal circulation path of the second low-frequency band is: radio frequency transceiver 11→second transmitting module 125→third triplexer (127)→second transmitting module 125→switch module 13→first antenna 141;

The main receiving signal circulation path of the first low-frequency band and the main receiving signal circulation path of the third low-frequency band are: first antenna 141→switch module 13→second transmitting module 125→main receiving module 126→RF transceiver 11;

The circulation path of the main receiver signal in the second low-frequency band is: first antenna 141→switch module 13→second transmitter module 125→third triplexer (127)→second transmitter module 125→main receiver Module 126→RF transceiver 11;

The diversity reception signal circulation path of the first low-frequency band, the diversity reception signal circulation path of the second low-frequency band, and the diversity reception signal circulation path of the third low-frequency band are: second antenna 142→switch module 13→diversity reception module Group 122→RF transceiver 11.

It is understandable that the above only shows the EN-DC architecture of the first low-frequency band and the third low-frequency band. The radio frequency system in FIG. 2 can actually also implement the first low-frequency band and the second low-frequency band in FIG. 1 The EN-DC architecture is not repeated here.

Based on the radio frequency system shown in FIG. 1, the first multiplexer 123 and the second multiplexer 127 of the embodiment of the present application may be triplexers, as shown in FIG. 3, which is a type provided by an embodiment of the present application. A schematic diagram of the structure of a triplexer. The triplexer includes an antenna ANT port, a receiving RX port, a grounded Ground port, and two transmitting TX ports, namely the first TX1 port of the first low frequency band (B20) and the second low frequency band (B28A). ) The second TX2 port. It can be understood that the first multiplexer 123 and the second multiplexer 127 are essentially triplexers with the same structure, and the first multiplexer 123 needs to use the first TX1 port of the illustrated triplexer, Antenna ANT port and receiving RX port, the above-mentioned second multiplexer needs to use the second TX port, antenna ANT port and receiving RX port of the triplexer shown in the figure. For easy distinction, the above-mentioned first multiplexer 123 can be used The ports are named the first transmitting port, the first receiving port, and the first antenna port, and the ports used by the second multiplexer 127 are named the second transmitting port, the second receiving port, and the second antenna port.

Wherein, the first transmitting port is used to circulate the transmission signal of the first low-frequency band, the first receiving port is used to circulate the received signal of the combined first low-frequency band and the second low-frequency band, and the first antenna port is used for In order to circulate the transmission signal of the first low frequency band and the reception signal at the same time, the second transmission port is used to circulate the transmission signal of the second low frequency band, and the second receiving port is used to circulate the first low frequency band and the second frequency band. The received signal in the low frequency band is combined, and the second antenna port is used to circulate the transmit signal in the second low frequency band and the received signal at the same time.

Through the above triplexer, the combined operation of the first low-frequency band and the second low-frequency band can be realized at the same time.

Based on the radio frequency system shown in FIG. 2, the first multiplexer 123 in the embodiment of the present application may be a quadruplexer, the second multiplexer 127 may be a third triplexer, and the third triplexer may refer to FIG. 3 Explanation, I won't repeat it here. As shown in Figure 4, Figure 4 is a schematic structural diagram of a quadruplexer provided by an embodiment of the application, including a third transmitting TX3 port, a fourth transmitting TX4 port, a third receiving RX3 port, a fourth receiving port, and a third Antenna ANT port, the second multiplexer is a third triplexer, including a fifth transmitting port, a fifth receiving port, and a fourth antenna port;

The third transmission port is used to circulate the transmission signal of the first low-frequency band, the fourth transmission port is used to circulate the transmission signal of the second low-frequency band, and the third receiving port is used to circulate the transmission signal of the first low-frequency band. A reception signal of a low frequency band and the second low frequency band are combined, the fourth receiving port is used to circulate the diversity reception signal of the third low frequency band, and the third antenna port is used to circulate the first The low-frequency frequency band, the second low-frequency frequency band transmit signals and receive signals.

The first transmitting module 121 in the embodiment of the present application may include a multi-mode multi-band power amplifier (MMPA), and a PA and a switch may be integrated inside the MMPA.

The second transmitting module 125 of the embodiment of the present application may include PAMID, which is a radio frequency integrated module that integrates a PA, a duplexer, a filter, and a transmission switch.

The diversity receiving module 122 of the embodiment of the present application may include L-DRX, which is a receiving module that integrates a surface acoustic wave filter (SAW) and LNA, and its constituent devices may include Phase7 lite devices. To realize the filtering and amplification of RX signal.

The main receiver module 126 in the embodiment of the present application may include a microlow noise amplifier (MLNA), and a low noise amplifier (LNA) may be integrated inside the MLNA, which can realize the amplification of the RX signal.

The directional coupler 124 in the embodiment of the present application can mix two radio frequency signals and output them. Optionally, the directional coupler 124 may also have a power distribution function, which is used to divide the power of the input signal into several channels and feed it back to the corresponding receiving port of the radio frequency transceiver 11, so that the radio frequency transceiver 11 can adjust the transmitted radio frequency. The power of the signal.

The switch module 13 of the embodiment of the present application may be any one of a three-pole three-throw 3P3T switch, a double-pole three-throw DP3T switch, a double-pole double-throw DPDT and a single-pole double-throw SP2T combination switch, or a double-pole four-throw DP4T switch .

As shown in FIG. 5a, FIG. 5a is a schematic structural diagram of a radio frequency system in which the switch module is a 3P3T switch provided by an embodiment of the application. The radio frequency system 100 includes a radio frequency transceiver 11, a radio frequency processing circuit 12, a 3P3T switch 13, The first antenna 141 and the second antenna 142, the radio frequency transceiver 11 is connected to the radio frequency processing circuit 12;

Specifically, the above-mentioned radio frequency processing circuit includes a first transmitting module 121, a diversity receiving module 122, a first multiplexer 123, a directional coupler 124, a second transmitting module 125, a main receiving module 126, and a second multiplexer. Worker 127;

The first port 111 of the radio frequency transceiver is connected to the first port 1211 of the first transmitting module 121, and the second port 1212 of the first transmitting module 121 is connected to the first port 1231 of the first multiplexer 123. The second port 1232 of the first multiplexer 123 is connected to the first T port T1 of the 3P3T switch 13 through the directional coupler 124, and the third port 1233 of the first multiplexer 123 is connected to the first T port of the diversity receiving module 122. Three ports 1223, the first port 1221 of the diversity receiving module 122 is connected to the third port 113 of the radio frequency transceiver 11, and the second port 1222 of the diversity receiving module 122 is connected to the third T port T3 of the 3P3T switch 13, The second port 112 of the radio frequency transceiver 11 is connected to the first port 1251 of the second transmitting module 125, and the second port 1252 of the second transmitting module 125 is connected to the third port 1273 of the second multiplexer 127, The third port 1253 of the second transmitting module 125 is connected to the second port 1272 of the second multiplexer 127, and the fourth port 1254 of the second transmitting module 125 is connected to the second T port T2 of the 3P3T switch 13. The fifth port 1255 of the second transmitting module 125 is connected to the third port 1263 of the main receiving module 126, and the first port 1271 of the second multiplexer 127 is connected to the second port of the main receiving module 126 1262. The first port 1261 of the main receiver module 126 is connected to the fourth port 114 of the radio frequency transceiver 11, the first P port P1 of the 3P3T switch 13 is connected to the first antenna 141, and the second port of the 3P3T switch 13 is The P port P2 is connected to the second antenna 142 described above.

Optionally, as shown in FIG. 5b, FIG. 5b is a schematic structural diagram of a radio frequency system in which the switch module is a DP3T switch provided by an embodiment of the application. The radio frequency system 100 includes a radio frequency transceiver 11, a radio frequency processing circuit 12, The DP3T switch 13, the first antenna 141 and the second antenna 142, the radio frequency transceiver 11 is connected to the radio frequency processing circuit 12;

The first port 111 of the radio frequency transceiver is connected to the first port 1211 of the first transmitting module 121, and the second port 1212 of the first transmitting module 121 is connected to the first port 1231 of the first multiplexer 123. The second port 1232 of the first multiplexer 123 is connected to the first T port T1 of the DP3T switch 13 through the directional coupler 124, and the third port 1233 of the first multiplexer 123 is connected to the first T port of the diversity receiving module 122. Three ports 1223, the first port 1221 of the diversity receiving module 122 is connected to the third port 113 of the radio frequency transceiver 11, and the second port 1222 of the diversity receiving module 122 is connected to the third T port T3 of the DP3T switch 13. The second port 112 of the radio frequency transceiver 11 is connected to the first port 1251 of the second transmitting module 125, and the second port 1252 of the second transmitting module 125 is connected to the third port 1273 of the second multiplexer 127, The third port 1253 of the second transmitting module 125 is connected to the second port 1272 of the second multiplexer 127, and the fourth port 1254 of the second transmitting module 125 is connected to the second T port T2 of the DP3T switch 13. The fifth port 1255 of the second transmitting module 125 is connected to the third port 1263 of the main receiving module 126, and the first port 1271 of the second multiplexer 127 is connected to the second port of the main receiving module 126 1262. The first port 1261 of the main receiver module 126 is connected to the fourth port 114 of the radio frequency transceiver 11, the first P port P1 of the DP3T switch 13 is connected to the first antenna 141, and the second port of the DP3T switch 13 is The P port P2 is connected to the second antenna 142 described above.

Optionally, please refer to FIG. 5c. FIG. 5c is a schematic structural diagram of a radio frequency system with a combination switch of SP2T and DPDT as a switch module provided by an embodiment of the application. The radio frequency system 100 includes a radio frequency transceiver 11 and a radio frequency processing circuit. 12. The SP2T switch 131 and the DPDT switch 132, the first antenna 141 and the second antenna 142, the radio frequency transceiver 11 is connected to the radio frequency processing circuit 12;

The first port 111 of the radio frequency transceiver is connected to the first port 1211 of the first transmitting module 121, and the second port 1212 of the first transmitting module 121 is connected to the first port 1231 of the first multiplexer 123. The second port 1232 of the first multiplexer 123 is connected to the first T port T11 of the SP2T switch 131 through the directional coupler 124, and the third port 1233 of the first multiplexer 123 is connected to the first T port of the diversity receiving module 122. Three ports 1223, the first port 1221 of the diversity receiving module 122 is connected to the third port 113 of the radio frequency transceiver 11, and the second port 1222 of the diversity receiving module 122 is connected to the second T port T12 of the SP2T switch 131, The P port P11 of the SP2T switch 131 is connected to the second T port T22 of the DPDT switch 132, the second port 112 of the radio frequency transceiver 11 is connected to the first port 1251 of the second transmitting module 125, and the second transmitting module The second port 1252 of the 125 is connected to the third port 1273 of the second multiplexer 127, the third port 1253 of the second transmitting module 125 is connected to the second port 1272 of the second multiplexer 127, and the second transmitting module 125 is connected to the second port 1272 of the second multiplexer 127. The fourth port 1254 of the module 125 is connected to the first T port T21 of the DPDT switch 132, the fifth port 1255 of the second transmitting module 125 is connected to the third port 1263 of the main receiver module 126, and the second multiple The first port 1271 of the worker 127 is connected to the second port 1262 of the main receiver module 126, the first port 1261 of the main receiver module 126 is connected to the fourth port 114 of the radio frequency transceiver 11, and the DPDT switch 132 The first P port P21 is connected to the first antenna 141, and the second P port P22 of the DPDT switch 132 is connected to the second antenna 142.

Optionally, as shown in FIG. 5d, FIG. 5d is a schematic structural diagram of a radio frequency system in which the switch module is a DP4T switch provided by an embodiment of the application. The radio frequency system 100 includes a radio frequency transceiver 11, a radio frequency processing circuit 12, The DP4T switch 13, the first antenna 141 and the second antenna 142, the radio frequency transceiver 11 is connected to the radio frequency processing circuit 12;

The first port 111 of the radio frequency transceiver is connected to the first port 1211 of the first transmitting module 121, and the second port 1212 of the first transmitting module 121 is connected to the first port 1231 of the first multiplexer 123. The second port 1232 of the first multiplexer 123 is connected to the first T port T1 of the DP4T switch 13 through the directional coupler 124, and the third port 1233 of the first multiplexer 123 is connected to the first T port of the diversity receiving module 122. Three ports 1223, the first port 1221 of the diversity receiving module 122 is connected to the third port 113 of the radio frequency transceiver 11, and the second port 1222 of the diversity receiving module 122 is connected to the third T port T3 of the DP4T switch 13. The second port 112 of the radio frequency transceiver 11 is connected to the first port 1251 of the second transmitting module 125, and the second port 1252 of the second transmitting module 125 is connected to the third port 1273 of the second multiplexer 127, The third port 1253 of the second transmitting module 125 is connected to the second port 1272 of the second multiplexer 127, and the fourth port 1254 of the second transmitting module 125 is connected to the second T port T2 of the DP4T switch 13. The fifth port 1255 of the second transmitting module 125 is connected to the third port 1263 of the main receiving module 126, and the first port 1271 of the second multiplexer 127 is connected to the second port of the main receiving module 126 1262. The first port 1261 of the main receiver module 126 is connected to the fourth port 114 of the radio frequency transceiver 11, the first P port P1 of the DP4T switch 13 is connected to the first antenna 141, and the second port of the DP4T switch 13 is The P port P2 is connected to the second antenna 142 described above.

Among them, the 3P3T switch can include 3 In ports and 3 OUT ports, which can realize 3-3 arbitrary connection switching in In-OUT; SP2T switches can include 1 In port and 2 OUT ports, and can connect 1 in-out intelligently. The DPDT switch can include 2 In ports and 2 OUT ports, and can realize 2-2 cross-connection switching in In-OUT; DP4T switch can include 4 In ports and 2 OUT ports, and can realize 2-2 in In-OUT. Inter-wire connection switching.

The above-mentioned radio frequency system can use two multiplexers and combined radio frequency circuit design, and use special components to design the combined antenna, so that two antennas can complete the dual-low-band non-independent networking, which greatly improves the dual-low-band non-independent networking. The universality of the Internet on electronic devices.

Please refer to FIG. 6, which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 6, the electronic device 10 may include a radio frequency system 100, wherein the radio frequency system 100 includes a radio frequency transceiver 11, The radio frequency processing circuit 12, the switch module 13, the first antenna 141 and the second antenna 142, the radio frequency transceiver 11 is connected to the radio frequency processing circuit 12;

Optionally, the fourth port 1234 of the first multiplexer is connected to the fourth port 1224 of the hierarchical receiving module.

When the above-mentioned radio frequency system 100 is in a non-standalone (Non-Standalone, NSA) working mode, the radio frequency system 100 is used to implement EN-DC dual-connection communication in the first low-frequency band and the second low-frequency band, and the first Low-frequency band and the third low-frequency band EN-DC dual-connection communication.

The above is the implementation of the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the embodiments of the present application, a number of improvements and modifications can be made, and these improvements and modifications are also Treated as the scope of protection of this application.

Claims

A radio frequency system, characterized in that the radio frequency system includes:

A radio frequency transceiver, a radio frequency processing circuit, a switch module, a first antenna and a second antenna, the radio frequency transceiver is connected to the radio frequency processing circuit, and the radio frequency processing circuit is connected to the first antenna through the switch module An antenna is connected to the second antenna;

The radio frequency processing circuit includes a first transmitting module, a second transmitting module, a main receiving module, a diversity receiving module, a first multiplexer, a second multiplexer, and a directional coupler;

The first port of the radio frequency transceiver is connected to the first port of the first transmitting module, and the second port of the first transmitting module is connected to the first port of the first multiplexer. The second port of the multiplexer is connected to the switch module through the directional coupler, the third port of the first multiplexer is connected to the third port of the diversity receiving module, the diversity receiving module The first port of the radio frequency transceiver is connected to the third port of the radio frequency transceiver, the second port of the diversity receiving module is connected to the switch module, and the second port of the radio frequency transceiver is connected to the second transmitting module The second port of the second transmitter module is connected to the third port of the second multiplexer, and the third port of the second transmitter module is connected to the second port of the second multiplexer. Two ports, the fourth port of the second transmitting module is connected to the switch module, the fifth port of the second transmitting module is connected to the third port of the main receiving module, and the second The first port of the multiplexer is connected to the second port of the main receiver module, and the first port of the main receiver module is connected to the fourth port of the radio frequency transceiver;

The radio frequency system is used to realize EN-DC dual-connection communication in the first low-frequency band and the second low-frequency band.
The radio frequency system according to claim 1, wherein, when the radio frequency system is in a non-independent networking mode, the first antenna is used for transmission of the first low frequency band, and the first low frequency band Diversity reception combined with the second low-frequency frequency band, the second antenna is used for the transmission of the second low-frequency frequency band, and the main set reception of the combination of the first low-frequency frequency band and the second low-frequency frequency band.
The radio frequency system according to claim 1, wherein the first multiplexer further comprises a fourth port, the diversity receiving module further comprises a fourth port, and the fourth port of the first multiplexer Connected to the fourth port of the diversity receiving module;

When the radio frequency system is in the non-independent networking mode, the first antenna is also used for the transmission of the first low-frequency band, and the diversity reception of the combined first and third low-frequency bands. The second antenna is also used for the transmission of the third low-frequency frequency band, and the main set reception of the combined first low-frequency frequency band and the third low-frequency frequency band.
The radio frequency system according to claim 1, wherein:

When the radio frequency system is in the long-term evolution network operating mode, the first antenna is used for the transmission of the first low-frequency band and the transmission of the second low-frequency band, and the main set of the first low-frequency band receives And the main set reception of the second low-frequency frequency band, the second antenna is used for diversity reception of the combination of the first low-frequency frequency band and the second low-frequency frequency band.
The radio frequency system according to claim 1, wherein:

When the radio frequency system is in the long-term evolution network operating mode, the first antenna is also used for the transmission of the first low-frequency band and the third low-frequency band, and the main set of the first low-frequency band For receiving and receiving the main set of the third low-frequency band, the second antenna is also used for diversity reception of the first low-frequency band, the second low-frequency band, and the third low-frequency band.
The radio frequency system according to claim 2 or 4, wherein the first multiplexer is a first triplexer, comprising a first transmitting port, a first receiving port and a first antenna port, and the second The multiplexer is a second triplexer, and includes a second transmitting port, a second receiving port, and a second antenna port;

The first transmitting port is used to circulate the transmission signal of the first low-frequency frequency band, and the first receiving port is used to circulate the received signal of the combined first low-frequency frequency band and the second low-frequency frequency band. An antenna port is used to circulate the transmission signal of the first low frequency band and the reception signal at the same time, the second transmission port is used to circulate the transmission signal of the second low frequency band, and the second receiving port is used to circulate The received signal of the first low frequency frequency band and the second low frequency frequency band are combined, and the second antenna port is used to circulate the transmission signal of the second low frequency frequency band and the received signal at the same time.
The radio frequency system according to claim 3 or 5, wherein the first multiplexer is a quadruplexer, including a third transmitting port, a fourth transmitting port, a third receiving port, a fourth receiving port, and a fourth transmitting port. Three antenna ports, the second multiplexer is a third triplexer, including a fifth transmitting port, a fifth receiving port, and a fourth antenna port;

The third transmission port is used to circulate the transmission signal of the first low-frequency band, the fourth transmission port is used to circulate the transmission signal of the second low-frequency band, and the third receiving port is used to circulate the transmission signal of the first low-frequency band. A reception signal of a low frequency band and the second low frequency band are combined, the fourth receiving port is used to circulate the diversity reception signal of the third low frequency band, and the third antenna port is used to circulate the first The transmission signal and the reception signal of the low frequency frequency band, the second low frequency frequency band, and the third low frequency frequency band.
The radio frequency system according to claim 2, wherein when the radio frequency system is in a non-independent networking mode,

The transmission signal circulation path of the first low-frequency band is sequentially: the radio frequency transceiver, the first transmission module, the first triplexer, the directional coupler, the switch module, and the The first antenna;

The circulation path of the diversity reception signal of the combination of the first low-frequency band and the second low-frequency band is in order: the first antenna, the switch module, the directional coupler, and the first triplexer , The diversity receiving module, and the radio frequency transceiver;

The transmission signal circulation path of the second low-frequency band is sequentially: the radio frequency transceiver, the second transmission module, the second triplexer, the second transmission module, and the switch module , The second antenna;

The main set of received signal circulation paths of the combined first low-frequency frequency band and the second low-frequency frequency band are: the second antenna, the switch module, the second transmitting module, and the second antenna. A triplexer, the main set receiving module, and the radio frequency transceiver.
The radio frequency system according to claim 4, wherein when the radio frequency system is in a long-term evolution network operating mode,

The transmission signal circulation path of the first low-frequency band is sequentially: the radio frequency transceiver, the second transmission module, the switch module, and the first antenna;

The transmission signal circulation path of the second low-frequency band is sequentially: the radio frequency transceiver, the second transmission module, the second triplexer, the second transmission module, and the switch module , The first antenna;

The main set of receiving signal circulation paths of the first low-frequency frequency band are in order: the first antenna, the switch module, the second transmitting module, the main receiving module, and the radio frequency transceiver ；

The main set of receiving signal circulation paths of the second low-frequency band are sequentially: the first antenna, the switch module, the second transmitting module, the second triplexer, and the second transmitting module. A module, the main set receiving module, and the radio frequency transceiver;

The circulation path of the diversity reception signal of the combination of the first low-frequency band and the second low-frequency band is in order: the second antenna, the switch module, the diversity receiving module, and the radio frequency transceiver.
The radio frequency system according to claim 3, wherein when the radio frequency system is in a non-independent networking mode,

The transmission signal circulation path of the first low-frequency band is sequentially: the radio frequency transceiver, the first transmission module, the quadruplexer, the directional coupler, the switch module, and the first transmission module. An antenna

The circulation paths of the diversity reception signal of the first low-frequency band and the third low-frequency band are: the first antenna, the switch module, the directional coupler, the quadruple, and the diversity Receiving module, the radio frequency transceiver;

The transmission signal circulation path of the third low-frequency band is sequentially: the radio frequency transceiver, the second transmission module, the switch module, and the second antenna;

The main set of reception signal circulation paths of the first low-frequency band and the third low-frequency band include the main set of receive signal circulation paths of the first low-frequency band and the main set of receive signal circulation paths of the third low-frequency band. The main set of receiving signal circulation paths of the frequency band are: the second antenna, the switch module, the second transmitting module, the third triplexer, the main receiving module, and the radio frequency Transceiver; the main signal flow path of the third low-frequency band is: the second antenna, the switch module, the second transmitting module, the main receiving module, the radio frequency transceiver Device.
The radio frequency system according to claim 5, wherein when the radio frequency system is in a long-term evolution network operating mode,

The transmission signal circulation path of the first low-frequency frequency band and the transmission signal circulation path of the third low-frequency frequency band are: the radio frequency transceiver, the second transmission module, the switch module, the first antenna;

The transmission signal circulation path of the second low-frequency band is: the radio frequency transceiver, the second transmission module, the third triplexer, the second transmission module, the switch module, The first antenna;

The main receiving signal circulation path of the first low-frequency frequency band and the main receiving signal circulation path of the third low-frequency frequency band are: the first antenna, the switch module, the second transmitting module, The main set receiving module and the radio frequency transceiver;

The main set of receiving signal circulation paths of the second low-frequency band are: the first antenna, the switch module, the second transmitting module, the third triplexer, and the second transmitting module Group, said main set receiving module, said radio frequency transceiver;

The diversity reception signal circulation path of the first low-frequency band, the diversity reception signal circulation path of the second low-frequency band, and the diversity reception signal circulation path of the third low-frequency band are: the second antenna, the switch The module, the diversity receiving module, and the radio frequency transceiver.
The radio frequency system according to claim 6, wherein the switch module includes any of a three-pole three-throw 3P3T switch, a double-pole double-throw DPDT and a single-pole double-throw SP2T combination switch, or a double-pole four-throw DP4T switch A sort of.
The radio frequency system according to claim 12, wherein:

When the switch module is the 3P3T switch, the first triplexer is connected to the first T port of the 3P3T switch through the directional coupler, and the fourth port of the second transmitting module is connected to the The second T port of the 3P3T switch, the second port of the diversity receiving module is connected to the third T port of the 3P3T switch, and the first P port of the 3P3T is connected to the first antenna. The second P port is connected to the second antenna;

When the switch module is the DPDT and SP2T combined switch, the first triplexer is connected to the first T port of the SP2T switch through the directional coupler, and the second port of the diversity receiving module Connected to the second T port of the SP2T switch, the fourth port of the second transmitter module is connected to the first T port of the DPDT switch, and the P port of the SP2T switch is connected to the second T port of the DPDT switch , The first P port of the DPDT switch is connected to the first antenna, and the second P port of the DPDT switch is connected to the second antenna;

When the switch module is the DT4T switch, the first triplexer is connected to the first T port of the DP4T switch through the directional coupler, and the fourth port of the second transmitting module is connected to the The second T port of the DP4T switch, the second port of the diversity receiving module is connected to the third T port of the DP4T switch, the first P port of the DP4T switch is connected to the first antenna, and the DP4T switch The second P port is connected to the second antenna.
The radio frequency system according to claim 7, wherein the switch module comprises a three-pole three-throw 3P3T switch, a double-pole three-throw DP3T switch, a double-pole double-throw DPDT and a single-pole double-throw SP2T combination switch, or a double-pole double-throw SP2T switch. Any of the four-throw DP4T switches.
The radio frequency system according to claim 14, wherein:

When the switch module is the 3P3T switch, the quadruple is connected to the first T port of the 3P3T switch through the directional coupler, and the fourth port of the second transmitting module is connected to the 3P3T The second T port of the switch, the second port of the diversity receiving module is connected to the third T port of the 3P3T switch, the first P port of the 3P3T is connected to the first antenna, and the second port of the 3P3T switch is The P port is connected to the second antenna;

When the switch module is the DP3T switch, the quadruple is connected to the first T port of the DP3T switch through the directional coupler, and the fourth port of the second transmitting module is connected to the DP3T The second T port of the switch, the second port of the diversity receiving module is connected to the third T port of the DP3T switch, the first P port of the DP3T is connected to the first antenna, and the second port of the DP3T switch The P port is connected to the second antenna;

When the switch module is the DPDT and SP2T combination switch, the quadruplexer is connected to the first T port of the SP2T switch through the directional coupler, and the second port of the diversity receiving module is connected to the The second T port of the SP2T switch, the fourth port of the second transmitter module is connected to the first T port of the DPDT switch, the P port of the SP2T switch is connected to the second T port of the DPDT switch, so The first P port of the DPDT switch is connected to the first antenna, and the second P port of the DPDT switch is connected to the second antenna;

When the switch module is the DT4T switch, the quadruple is connected to the first T port of the DP4T switch through the directional coupler, and the fourth port of the second transmitting module is connected to the DP4T The second T port of the switch, the second port of the diversity receiving module is connected to the third T port of the DP4T switch, the first P port of the DP4T switch is connected to the first antenna, and the second port of the DP4T switch The two P ports are connected to the second antenna.
The radio frequency system according to any one of claims 1-15, wherein the first transmitting module includes a multi-mode and multi-frequency power amplifier, and the second transmitting module includes a power amplifier, a duplexer, and a filter. The diversity receiving module includes a surface acoustic wave filter and a noise floor amplifier, and the main receiving module includes a noise floor amplifier.
The radio frequency system according to any one of claims 1 to 15, wherein the components of the diversity receiving module include a Phase7 lite device.
The radio frequency system according to any one of claims 1 to 15, wherein the first antenna and the second antenna are low-frequency antennas.
The radio frequency system according to any one of claims 1 to 15, wherein the first low-frequency band includes the B20 band, the second low-frequency band includes the N28A band, and the third low-frequency band includes the N8A band.
An electronic device, characterized in that the electronic device comprises the radio frequency system according to any one of claims 1-19, and the radio frequency system is used to realize the EN-DC dual connection of the first low frequency band and the second low frequency band Communication.