CN113726358A

CN113726358A - Radio frequency PA Mid device, radio frequency system and communication equipment

Info

Publication number: CN113726358A
Application number: CN202010457315.4A
Authority: CN
Inventors: 陈武
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-11-30

Abstract

The application provides a radio frequency PA Mid device, a radio frequency system and communication equipment, wherein the radio frequency PA Mid device and a first transceiving circuit are used for receiving a first radio frequency signal through a first transmitting port and amplifying and filtering the received first radio frequency signal; the second transceiver circuit is used for receiving a second radio frequency signal through the second transmitting port and amplifying and filtering the received second radio frequency signal; the multi-channel selection switch is used for selectively conducting the transmitting paths between the first transmitting and receiving circuit and the second transmitting and receiving circuit and any antenna transmission port respectively so as to support the function of transmitting the dual-band detection reference signals among the plurality of antennas through the plurality of antenna transmission ports in a rotating mode, the insertion loss of the transmitting paths can be reduced, meanwhile, the occupied space of the radio frequency PA Mid device is reduced, the cost is reduced, and the communication performance of a radio frequency system is improved.

Description

Radio frequency PA Mid device, radio frequency system and communication equipment

Technical Field

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

Background

With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to electronic devices. The 5G mobile communication technology communication frequency is higher than that of the 4G mobile communication technology. Generally, a plurality of switches separately arranged in a transmission path in a radio frequency system are arranged to support alternate transmission of radio frequency signals among a plurality of antennas, which is high in cost and occupies a large area of a substrate.

Disclosure of Invention

The embodiment of the application provides a radio frequency PA Mid device, a radio frequency system and communication equipment, which can save occupied space, improve integration level and reduce cost.

A radio frequency PA Mid device configured with a first transmit port for connection to a radio frequency transceiver, a second transmit port, and a plurality of antenna wheel transmit ports for connection to an antenna, the radio frequency PA Mid device comprising:

the first transceiver circuit is connected with the first transmitting port and used for receiving a first radio frequency signal through the first transmitting port and amplifying and filtering the received first radio frequency signal;

the second transceiver circuit is connected with the second transmitting port and used for receiving a second radio frequency signal through the second transmitting port and amplifying and filtering the received second radio frequency signal;

the multi-channel selection switch comprises at least two first ends and a plurality of second ends, wherein one first end is connected with the first transceiver circuit, the other first end is connected with the second transceiver circuit, the second ends are respectively connected with the antenna radiation ports in a one-to-one correspondence mode, the multi-channel selection switch is used for selectively conducting transmitting paths between the first transceiver circuit and the second transceiver circuit and any antenna radiation port respectively so as to support the function that double-frequency-band detection reference signals are transmitted among the antenna radiation ports in a wheel mode.

A radio frequency system, comprising:

the radio frequency PA Mid device as described above;

an antenna group comprising at least:

the first antenna is connected with a second end of the multichannel selection switch;

and the second antenna is connected with the other second port of the multi-channel selection switch.

A communication device, comprising:

a radio-frequency transceiver for receiving and transmitting radio-frequency signals,

the radio frequency system is connected with the radio frequency transceiver.

The radio frequency PA Mid device is configured with a plurality of antenna wheel emitting ports for connecting a plurality of antennas in an antenna group, and further comprises a first transceiver circuit, a second transceiver circuit and a multi-channel selection switch, so that the emission control of dual-band radio frequency signals (a first radio frequency signal and a second radio frequency signal) can be realized, meanwhile, the emission paths between the first transceiver circuit and the second transceiver circuit and any antenna wheel emitting port can be selectively conducted based on the multi-channel selection switch, and the function of the dual-band detection reference signal in the multi-antenna wheel emission through the plurality of antenna wheel emitting ports is supported.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be 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 one illustration of a radio frequency system in one embodiment;

FIG. 2 is one of the schematic diagrams of an RF PA Mid device in one embodiment;

FIG. 3 is a second schematic diagram of an embodiment of an RF PA Mid device;

FIG. 4 is a third schematic diagram of an RF PA Mid device in one embodiment;

FIG. 5 is a fourth schematic diagram of an embodiment of an RF PA Mid device;

FIG. 6 is a fifth schematic diagram of an embodiment of an RF PA Mid device;

FIG. 7 is a sixth schematic diagram of an embodiment of an RF PA Mid device;

FIG. 8 is a seventh schematic diagram of an embodiment of an RF PA Mid device;

fig. 9a is a schematic pin layout of the rf PA Mid device of fig. 7;

fig. 9b is a schematic layout of a package structure of the rf PA Mid device in fig. 9 a;

fig. 10a is a schematic pin layout of the rf PA Mid device of fig. 8;

fig. 10b is a schematic layout of a package structure of the rf PA Mid device in fig. 10 a;

FIG. 11 is a second schematic diagram of an embodiment of an RF system;

fig. 12a is one of application scenarios illustrating transmission of feedback channel information by a communication device according to an embodiment;

fig. 12b is a second schematic view illustrating an application scenario of transmitting feedback channel information of a communication device according to an embodiment;

fig. 13 is a schematic structural diagram of a mode of SRS antenna alternate transmission according to an embodiment;

figure 14 is a schematic diagram of an L-DRX device of an embodiment;

fig. 15a is a third schematic diagram of an rf transceiving system according to an embodiment;

FIG. 15b is a fourth schematic diagram of an RF transceiver system according to an embodiment;

FIG. 16a is a fifth schematic diagram of an RF transceiver system according to an embodiment;

FIG. 16b is a sixth schematic view of an RF transceiver system according to an embodiment;

fig. 17 is a schematic structural diagram of a communication device according to an embodiment.

Detailed Description

In order to make the above 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, however, may be embodied in many different forms and is not limited to the embodiments described 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 number" means at least one, such as one, two, etc., unless specifically limited otherwise.

The radio frequency system according to the embodiment of the present application may be applied to a communication device having 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 devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as a communication device. The network devices may include base stations, access points, and the like.

As shown in fig. 1, an embodiment of the present application provides a radio frequency system. In one embodiment, the radio frequency system includes a radio frequency PA Mid (Power Amplifier Modules) device 10 and an antenna group 20, where the antenna group 20 may include multiple antennas Ant supporting multi-band radio frequency signal transceiving.

The radio frequency PA Mid device 10 is configured with a plurality of antenna transmission ports SRS for connecting a plurality of antennas Ant in the antenna group 20, and further includes a first transceiver circuit 110, a second transceiver circuit 120, and a multi-channel selection switch 130, which can implement transmission control of dual-band radio frequency signals (a first radio frequency signal and a second radio frequency signal), and simultaneously can selectively conduct transmission paths between the first transceiver circuit 110 and the second transceiver circuit 120 and any antenna transmission port SRS based on the multi-channel selection switch 130, so as to support the function of transmitting dual-band sounding reference signals between the plurality of antennas Ant through the plurality of antenna transmission ports SRS. According to the radio frequency system, only one multi-channel selection switch 130 is arranged inside the radio frequency PA Mid device 10, the alternate transmission of the double-frequency-band sounding reference signals among the multiple antennas Ant can be achieved, compared with the prior art, the number of switches on a transmitting path is reduced, the insertion loss of the transmitting path can be reduced, meanwhile, the occupied space of the radio frequency PA Mid device 10 is also reduced, the cost is reduced, and the communication performance of the radio frequency system is also improved.

In one embodiment, the rf PA Mid device 10 is configured with a first transmit port RFIN1 for connection to an rf transceiver, a second transmit port RFIN2, and a plurality of antenna ports SRS for connection to an antenna Ant. The antenna wire port SRS can be understood as each rf pin configured in the rf PA Mid device 10 and connected to each antenna Ant in the antenna group 20. The number of the antenna wheel ports SRS is equal to that of the antennas Ant, and one antenna wheel port SRS is correspondingly connected with one antenna Ant. The first and second transmit ports RFIN1, RFIN2 may be understood as radio frequency terminals configured at the radio frequency PA Mid device 10 for connection with a radio frequency transceiver.

The radio frequency PA Mid device 10 comprises a first transceiver circuit 110 and a second transceiver circuit 120. The first transceiver circuit 110 is connected to the first transmit port RFIN1, and configured to receive a first radio frequency signal through the first transmit port RFIN1, and perform amplification and filtering processing on the received first radio frequency signal; the second transceiver circuit 120 is connected to the second transmit port RFIN2, and configured to receive the second radio frequency signal through the second transmit port RFIN2, and perform amplification and filtering processing on the received second radio frequency signal.

It should be noted that the first transceiver circuit 110 and the second transceiver circuit 120 have the same structure, and meanwhile, both the first transceiver circuit 110 and the second transceiver circuit 120 can implement transmission control or transmission (transmission and reception) control on the first radio frequency signal and the second radio frequency signal.

The multi-channel selection switch 130 includes at least two first terminals and a plurality of first terminals. The two first ends can be respectively marked as P1 and P2, the second ends can be respectively marked as T1, T2, … and Tm, wherein m is the number of the second ends. The first terminal P1 is connected to the first transceiver circuit 110, the second terminal P2 is connected to the second transceiver circuit 120, and the plurality of second terminals are respectively connected to the antenna ports SRS in a one-to-one correspondence. That is, a second end of the multi-channel selection switch 130 is connected to one antenna round port SRS. Illustratively, when the number of the antenna ports SRS is two, and the antennas SRS ports SRS1 and SRS2 are respectively, a second end T1 of the multi-channel selection switch 130 is correspondingly connected to the antenna port SRS1, and another second end T2 of the multi-channel selection switch 130 is correspondingly connected to the antenna port SRS 2.

The multi-channel selection switch 130 is used to selectively conduct the transmission paths between the first transceiver circuit 110 and the second transceiver circuit 120 and any antenna wheel transmit port SRS, so as to support the function of transmitting the detection reference signals of the dual-band (the first radio frequency signal and the second radio frequency signal) among the multiple antennas Ant through the multiple antenna wheel transmit ports SRS.

In one embodiment, the first rf signal and the second rf signal may be 5G NR signals, but the respective operating frequency bands are different. For example, the first rf signal may be a 5G signal in an N77 frequency band and/or an N78 frequency band, and the second rf signal may be a 5G signal in an N79 frequency band. Accordingly, the first rf signal may be a 5G signal in the N79 band, and the second rf signal may be a 5G signal in the N77 band and/or the N78 band. Specifically, the working frequency band of N77 is 3.3GHz-4.2GHz, the working frequency band of N78 is 3.3GHz-3.8GHz, and the working frequency band of N79 is 4.4GHz-5.0 GHz.

The above-mentioned radio frequency PA Mid device 10 is configured with an antenna wheel radiation port SRS, and further includes a first transceiver circuit 110, a second transceiver circuit and a multi-channel selection switch 130, which can implement the transmission control of the dual-band radio frequency signals (the first radio frequency signal and the second radio frequency signal), and simultaneously, based on the multi-channel selection switch 130, the transmission paths between the first transceiver circuit 110 and the second transceiver circuit 120 and any antenna wheel radiation port SRS can be selectively conducted, so as to support the function of the dual-band sounding reference signal being transmitted among the multiple antennas Ant through the multiple antenna wheel radiation ports SRS. Compared with the conventional radio frequency PA Mid device 10, the number of switches on the transmission path is reduced, the insertion loss of the transmission path can be reduced, and meanwhile, the number of associated modules for supplying power and controlling a plurality of switches in the conventional radio frequency PA Mid device 10 can be reduced, so that the occupied space and the cost of the radio frequency PA Mid device 10 are reduced, and the communication performance of a radio frequency system is also improved.

As shown in fig. 2, in one embodiment, the first transceiver circuit 110 includes a first power amplifier 111 and a first filter 112. The input end of the first power amplifier 111 is connected to the first transmit port RFIN1, and is configured to amplify the first radio frequency signal; the first filter 112 is connected to the output terminal of the first power amplifier 111 and the first terminal of the multi-channel selection switch 130, respectively, and is configured to perform filtering processing on the received first radio frequency signal. That is, the first transceiver circuit 110 may receive the first radio frequency signal output by the radio frequency transceiver through the first transmit port RFIN1, amplify and filter the first radio frequency signal, and select any antenna radio frequency port through the multi-channel selection switch 130 to output the first radio frequency signal, so as to control the round transmission of the sounding reference signal of the first radio frequency signal among the multiple antennas Ant through any antenna radio frequency port.

Accordingly, the second transceiver circuit 120 includes a second power amplifier 121 and a second filter 122. The input end of the second power amplifier 121 is connected to the second transmitting port RFIN2, and is configured to amplify the second radio frequency signal; the second filter 122 is connected to the output terminal of the second power amplifier 121 and the first terminal of the multi-channel selection switch 130, respectively, and is configured to perform filtering processing on the received second radio frequency signal. That is, the second transceiver circuit 120 may receive the second radio frequency signal output by the radio frequency transceiver through the second transmit port RFIN2, amplify and filter the second radio frequency signal, and select any antenna radio frequency port through the multi-channel selection switch 130 to output the second radio frequency signal, so as to control the round transmission of the sounding reference signal of the second radio frequency signal among the multiple antennas Ant through any antenna radio frequency port.

For example, the first rf signal is a signal in the N77 frequency band, and the second rf signal is a signal in the N79 frequency band. The first power amplifier 111 and the first filter 112 can support processing of 5G signals of the N77 frequency band, and the second power amplifier 121 and the second filter 122 can support processing of 5G signals of the N79 frequency band. The first filter 112 allows only the rf signal in the N77 frequency band to pass through, and can filter the stray waves except the signal in the N77 frequency band. The second filter 122 allows only the 5G signal of the N79 band to pass therethrough, while also filtering stray waves other than the 5G signal of the N79 band.

In one embodiment, the first filter 112 and the second filter 122 may be band pass filters. The first filter 112 may also be a low pass filter.

It should be noted that, in the embodiment of the present application, the types of the first filter 112 and the second filter 122 are not further limited.

As shown in fig. 3, in one embodiment, the rf PA Mid device 10 is further configured with a first receiving port RX1 and a second receiving port RX2 for connecting an rf transceiver, based on the rf PA Mid device 10 shown in fig. 2. The first receiving port RX1 and the second receiving port RX2 can be understood as radio frequency terminals configured on the radio frequency PA Mid device 10 for connecting with a radio frequency transceiver.

The first transceiver circuit 110 further includes a first low noise amplifier 113 and a first switch unit 114. The output end of the first low noise amplifier 113 is connected to the first receiving port RX1, and is configured to amplify the received first radio frequency signal; the first switch unit 114 is respectively connected to the output terminal of the first power amplifier 111 and the input terminal of the first low noise amplifier 113, and is configured to selectively turn on a receiving path where the first receiving port RX1 is located or a transmitting path where the first transmitting port RFIN1 is located to implement transceiving control on the first radio frequency signal. Specifically, the first switch unit 114 is configured to implement switching control of a receiving/transmitting operating mode of the first radio frequency signal in the TDD mode. That is, when the first switching unit 114 selects the conductive connection with the first power amplifier 111, the transmission path in which the first transmission port RFIN1 is located may be turned on to implement the transmission control of the first radio frequency signal, and when the first switching unit 114 selects the conductive connection with the first low noise amplifier 113, the reception path in which the first reception port RX1 is located may be turned on to implement the reception control of the first radio frequency signal.

The second transceiver circuit 120 further includes a second low noise amplifier 123 and a second switching unit 124. The output end of the second low noise amplifier 123 is connected to the second receiving port RX2, and is configured to amplify the received second radio frequency signal. The second switch unit 124 is respectively connected to the output end of the second power amplifier 121 and the input end of the second low noise amplifier 123, and is configured to selectively turn on the receiving path where the second receiving port RX2 is located or the transmitting path where the second transmitting port RFIN2 is located to implement transceiving control on the second radio frequency signal. Specifically, the second switch unit 124 is configured to implement switching control of a transceiving operation mode of the second radio frequency signal in the TDD mode. That is, when the second switching unit 124 selects the conductive connection with the second power amplifier 121, the transmission path in which the second transmission port RFIN2 is located may be turned on to implement the transmission control of the second radio frequency signal, and when the second switching unit 124 selects the conductive connection with the second low noise amplifier 123, the reception path in which the second reception port RX2 is located may be turned on to implement the reception control of the second radio frequency signal.

In one embodiment, the first switch unit 114 and the second switch unit 124 may be single-pole double-throw (SPDT) switches, and may also be electronic switch tubes, Mobile Industry Processor (MIPI) interfaces, and/or General-purpose input/output (GPIO) interfaces, etc. When the first switch unit 114 and the second switch unit 124 are MIPI interfaces or GPIO interfaces, on or off states of the first switch unit 114 and the second switch unit 124 may be controlled by the MIPI control unit and/or the GPIO control unit. In the embodiment of the present application, specific forms of the first switch unit 114 and the second switch unit 124 are not further limited.

In one embodiment, when the radio frequency PA Mid device 10 includes the first switch unit 114 and the second switch unit 124, and the number of antenna wheeling ports SRS is four (which may be respectively referred to as SRS1, SRS2, SRS3, SRS4), the multi-channel selection switch 130 includes two first terminals (which may be respectively referred to as P1, P2) and four first terminals (which may be respectively referred to as T1, T2, T3, T4). Illustratively, the multi-channel select switch 130 may be a radio frequency DP4T switch. A first end P1 of the rf DP4T switch is connected to the first filter 112, another first end P2 is connected to the second filter 122, a second end T1 is connected to the antenna port SRS1, another second end T2 is connected to the antenna port SRS2, another second end T3 is connected to the antenna port SRS3, and another second end T4 is connected to the antenna port SRS 4. That is, when the first end P1 of the multi-channel selection switch 130 is connected to the first filter 112, the first rf signal can be output from any one of the antenna hub ports SRS1 to SRS4 through the switching control of the rf DP4T switch, and when the other first end P2 of the multi-channel selection switch 130 is connected to the second filter 122, the first rf signal can be output from any one of the antenna hub ports SRS1 to SRS4 through the switching control of the rf DP4T switch.

The operation mechanism of the radio frequency PA Mid device 10 shown in fig. 3 is described by taking the round-trip transmission and reception control of the first radio frequency signal (5G signal in the N77 frequency band) as an example:

the first radio frequency signal enters from the first transmitting port RFIN1, is transmitted to the first switch unit 114 through the first power amplifier 111, is switched to the first filter 112 by the first switch unit 114, and then reaches the first end of the multi-channel selection switch 130, and through the switching of the multi-channel selection switch 130, the first radio frequency signal can be output from any one of the four antenna radio ports (SRS1 to SRS4) to support the SRS round transmitting function of the first radio frequency signal. Accordingly, the first rf signal received by the antenna Ant can be input through any one of the antenna wheel rf ports (SRS1 to SRS4), switched to the receiving channel of the first transceiver circuit 110 by the multi-channel selection switch 130, passed through the first filter 112 to the first switch unit 114, switched by the first switch unit 114 to the first low noise amplifier 113, and output to the rf transceiver through the first receiving port RX1 by the first low noise amplifier 113.

In this embodiment, the first transceiver circuit 110 can implement transceiving control on the first radio frequency signal, and simultaneously can support the round transmission of the first radio frequency signal among the multiple antennas Ant to implement the SRS function; accordingly, the second transceiver circuit 120 can implement transceiving control of the second rf signal, and can support the round transmission of the second rf signal among the plurality of antennas Ant to implement the SRS function. That is, the radio frequency PA Mid device 10 can support the transceiving control of the dual-band signals N77 and N79, and can also support the function of the dual-band sounding reference signal that is transmitted between the antennas Ant through the multiple antenna ports SRS. Compared with the conventional radio frequency PA Mid device 10, the number of switches on the transmission path is reduced (for example, at least two radio frequency switch devices, such as a cascaded DP3T switch and a cascaded 3P4T switch, need to be arranged in the conventional radio frequency PA Mid device 10), so that the insertion loss of the transmission path can be reduced, the occupied space of the radio frequency PA Mid device 10 is also reduced, the cost is reduced, and the communication performance of the radio frequency system is also improved.

As shown in fig. 4, in one embodiment, the rf PA Mid device 10 is further configured with a first receiving port RX1 and a second receiving port RX2 for connecting an rf transceiver, based on the rf PA Mid device 10 shown in fig. 2. The first transceiver circuit 110 further includes a third low noise amplifier 115 and a third filter 116. The output end of the third low noise amplifier 115 is connected to the first receiving port RX1, and is configured to amplify the received first radio frequency signal; the third filter 116 is connected to the input terminal of the third low noise amplifier 115 and the first terminal of the multi-channel selection switch 130, respectively, and is configured to perform filtering processing on the received first radio frequency signal. That is, the reception control of the first radio frequency signal is realized based on the third low noise amplifier 115 and the third filter 116. The second transceiver circuit 120 further includes a fourth low noise amplifier 125 and a fourth filter 126. The output end of the fourth low noise amplifier 125 is connected to the first receiving port RX1, and is configured to amplify the received second radio frequency signal; and a fourth filter 126, connected to the input terminal of the fourth low noise amplifier 125 and the first terminal of the multi-channel selection switch 130, respectively, for performing filtering processing on the received second radio frequency signal. That is, the reception control of the second radio frequency signal can be realized based on the fourth low noise amplifier 125 and the fourth filter 126.

In one embodiment, when the rf PA Mid device 10 includes the third filter 116 and the fourth filter 126, and the number of antenna transmit ports SRS is four (which may be respectively referred to as SRS1, SRS2, SRS3, SRS4), the multi-channel selection switch 130 includes four first terminals (which may be respectively referred to as P1, P2, P3, P4) and four second terminals (which may be respectively referred to as T1, T2, T3, T4). In one embodiment, the multi-channel selection switch 130 is a radio frequency 4P4T switch. That is, any one of the first terminals P1, P2, P3 or P4 of the rf 4P4T switch may be connected to four second terminals (T1, T2, T3, T4). Wherein, a first terminal P1 of the rf 4P4T switch is connected to the first filter 112, another first terminal P2 is connected to the second filter 122, another first terminal P3 is connected to the third filter 116, and another first terminal P4 is connected to the fourth filter 126; a second terminal T1 is connected to the antenna rotation port SRS1, another second terminal T2 is connected to the antenna rotation port SRS2, another second terminal T3 is connected to the antenna rotation port SRS3, and another second terminal T4 is connected to the antenna rotation port SRS 4. That is, when the first terminal P1 of the multi-channel selection switch 130 is connected to the first filter 112, the first rf signal can be output from any one of the antenna ports SRS1 to SRS4 through the switching control of the rf DP4T switch, and when the first terminal P2 of the multi-channel selection switch 130 is connected to the second filter 122, the first rf signal can be output from any one of the antenna ports SRS1 to SRS4 through the switching control of the rf DP4T switch.

Taking the radio frequency PA Mid device 10 shown in fig. 4 as an example, the operation mechanism of the round-trip transmission and reception control of the first radio frequency signal (5G signal in the N77 frequency band) is described:

the first radio frequency signal enters from the first transmitting port RFIN1, passes through the first power amplifier 111 and the first filter 112, reaches the first end of the multi-channel selection switch 130, and can be output from any one of the four antenna round transmitting ports (SRS1 to SRS4) by switching of the multi-channel selection switch 130 to support the SRS round transmitting function of the first radio frequency signal. Accordingly, the first rf signal received by the antenna Ant can be input through any one of the antenna wheel rf ports (SRS1 to SRS4), switched to the receiving channel of the first transceiver circuit 110 by the multi-channel selection switch 130, and output to the rf transceiver through the third filter 116, the first low noise amplifier 113, and the first receiving port RX 1.

In the rf PA Mid device 10 shown in fig. 3, a multi-channel selection switch 130 (e.g., an rf DP4T switch), a first switch unit 114 (e.g., an SPDT switch), and a second switch unit 124 (e.g., an SPDT switch) are disposed on a transmitting/receiving channel inside the device, for a total of three switches. Taking the commonly used rf DP4T switch as QM11024 as an example, the insertion loss of the multi-channel selection switch 130 is shown in table 1, and the rf frequencies of each frequency band in the rf PA Mid device 10 are shown in table 2.

TABLE 1 insertion loss values for multichannel selection switch 130QM11024

Frequency band (GHz)	N77	N79
			Insertion loss (dB)	0.7	0.9

TABLE 2 Link RF line loss values

Frequency band (GHz)	N77	N79
			Insertion loss (dB)	2.9	2.8

As shown in fig. 4, in the rf PA Mid device 10, the first switch unit 114 and the second switch unit 124 for switching the transceiving channels are omitted, so that the link loss of the transceiving channels of the rf PA Mid device 10 can be reduced. For example, the first switch unit 114 and the second switch unit 124 are SPDT switches (e.g., RF1630), and the insertion loss of the first switch unit 114 or the second switch unit 124 is shown in table 3.

TABLE 3 insertion loss values of the first switching unit 114 or the second switching unit 124

Frequency band (GHz)	N77	N79
			Insertion loss (dB)	0.65	0.90

TABLE 4 SRS output powers of N77 and N79 channel aerial wheel ports

Frequency band (GHz)	N77	N79
			Antenna Ant port power (dB)	25.55	25.45

The first transmission port RFIN1 will be described as having an output power of 28.5 dBm. The output power of the antenna ports SRS is 28.5-2.9-0.7+0.65 — 25.55dBm, and the output power of the antenna ports SRS of N77 and N79 is shown in table 4. As can be seen from Table 4, the SRS output power of the antenna wire port with the N77 channel is 25.55dBm, and meets the design requirements of research and development.

As shown in fig. 5, in one embodiment, the radio frequency PA Mid device 10 is configured with a coupling output port CPLOUT, and the radio frequency PA Mid device 10 further includes a first coupling unit 141, a second coupling unit 142, and a coupling switch unit 143.

The first coupling unit 141 is disposed in the transmission path of the first transceiver circuit 110, and configured to couple a first radio frequency signal to output a first coupled signal, where the first coupled signal includes a first forward coupled signal and a first backward coupled signal. The second coupling unit 142 is disposed in the transmission path of the second transceiver circuit 120, and configured to couple a second radio frequency signal to output a second coupled signal, where the second coupled signal includes a second forward coupled signal and a second backward coupled signal.

The first coupling unit 141 includes an input terminal a, an output terminal b, a first coupling terminal c, and a second coupling terminal d. Meanwhile, the first coupling unit 141 further includes a main line extending between the input terminal a and the output terminal b, and a sub line extending between the first coupling terminal c and the second coupling terminal d. An input end a of the first coupling unit 141 is connected to an output end of the first power amplifier 111221, an output end b of the first coupling unit 141 is connected to the first filter 112, and a first coupling end c is configured to couple the radio frequency signal received by the input end a and output a first forward coupled signal; the second coupling terminal d is configured to couple a reflected signal of the first radio frequency signal and output a first reverse coupled signal. Based on the first forward coupled signal output by the first coupling terminal c, the forward power information of the first rf signal can be detected, and the detection mode is defined as a forward power detection mode. Based on the first reverse coupling signal output by the second coupling terminal d, the reverse power information of the first rf signal may be correspondingly detected, and the detection mode is defined as a reverse power detection mode.

Accordingly, the forward power detection and the reverse power detection of the second rf signal can also be achieved based on the first coupling end and the second coupling end of the second coupling unit 142. The second coupling unit 142 and the first coupling unit 141 have the same structure and working principle, and the structure and working principle of the second coupling unit 142 are not described herein again.

The coupling switch unit 143 is connected to the first coupling unit 141 and the second coupling unit 142, respectively, and is configured to selectively output the first forward coupling signal, the first backward coupling signal, the second forward coupling signal, or the second backward coupling signal through the coupling output port CPLOUT, that is, to selectively switch the first coupling unit 141 and the second coupling unit 142, so as to output the first coupling signal or the second coupling signal, thereby detecting power information of the first coupling signal and the second coupling signal. Wherein the power information includes forward power and reverse power.

In one embodiment, the coupling switch unit 143 includes four first contacts (1, 2, 3, 4) and two second contacts (5, 6). Wherein, a first contact (1) is connected with the second coupling end of the first coupling unit 141, a first contact (2) is connected with the first coupling end of the first coupling unit 141, a first contact (4) is connected with the first coupling end of the second coupling unit 142, and a first contact (3) is connected with the second coupling end of the second coupling unit 142; a second contact (6) is connected to the coupling output port CPLOUT, and a second contact (5) is grounded.

For example, the power information of the first rf signal is collected, and the coupling switch unit 143 is an rf DP4T switch.

When the first backward coupling signal of the first coupling unit 141 needs to be collected, the contact (5) of the radio frequency DP4T switch is connected to the contact (1), the leaked first forward coupling signal is grounded through the load, interference on the second coupling end (backward power output port) is avoided, the contact (6) of the radio frequency DP4T switch is connected to the contact (2), and the first backward coupling signal is led out to the coupling output port CPLOUT. When the first forward coupling signal of the first coupling unit 141 is sampled, the contact (5) of the rf DP4T switch is connected to the contact (2), the contact (6) is connected to the contact (1), and the leaked first backward coupling signal is grounded through the load, thereby avoiding interference to the second coupling terminal (backward power output port).

It should be noted that the control process for acquiring the power information of the second radio frequency signal is similar to the control process for acquiring the power information of the first radio frequency signal, and is not described herein again.

In the embodiment of the present application, only one coupling switch unit 143 (for example, a radio frequency DP4T switch) is provided, so that the first coupling unit 141 and the second coupling unit 142 can be switched, the area occupied by the package is reduced, and the cost is also reduced. Since the first coupling unit 141 and the second coupling unit 142 do not work at the same time, only one coupling output port CPLOUT is provided, which can meet the requirement; the complexity of radio frequency wiring inside the device is reduced, and meanwhile, the isolation performance of each wiring inside the device can be improved.

In one embodiment, the rf PA Mid device 10 further includes a resistor R, and a second contact 5 is grounded via the resistor R. Specifically, the resistance value of the resistor R may be set to 50 ohms, so that the leaked forward coupling signal or the backward coupling signal is grounded, and the interference of the forward coupling signal on the backward output port when the first coupling unit 141 or the second coupling unit 142 outputs the backward coupling signal is solved.

As shown in fig. 6, in one embodiment, the rf PA Mid device 10 is further configured with a coupling input port CPLIN based on the rf PA Mid device 10 shown in fig. 5. When the rf PA Mid device 10 is configured with the coupling input port CPLIN, the number of the first contacts of the multichannel selection switch 130 also needs to be increased by one. Illustratively, the multi-channel select switch 130 may be a DP5T switch. That is, the coupling switch unit 143 includes five first contacts (1, 2, 3, 4, 5) and two second contacts (6, 7). Wherein a first contact (5) is connected with the coupling input port CPLIN. A second contact (7) is connected to the coupling output port CPLOUT and a second contact (contact 6) is connected to ground.

In this embodiment, the rf DP4T switch may be replaced by a DP5T switch, the number of the first contacts is increased to 5, when the second contact (7) is connected to the first contact (5), a path may be formed, and an external coupling signal (a forward coupling signal or a reverse coupling signal) may enter from the coupling input port CPLIN and then be output from the coupling output port CPLOUT. The coupling input port CPLIN can receive coupling signals output by the coupling output ports CPLOUT of other radio frequency PA Mid devices 10, so that the radio frequency wiring length for transmitting the coupling signals can be shortened, the complexity of the layout of the radio frequency system is reduced, meanwhile, the area of the PCB occupied by the radio frequency system is reduced, and the cost is reduced.

As shown in fig. 7 and 8, in one embodiment, the number of the coupling output ports CPLOUT configured in the radio frequency PA Mid device 10 is two, which are respectively denoted as a first coupling output port CPLOUT1 and a second coupling output port CPLOUT 2. In one embodiment, the coupling switch unit 143 includes: a first coupling switch 1431, a second coupling switch 1432, and a third coupling switch 1433. One end of the first coupling switch 1431 is connected to the first coupling end and the second coupling end of the first coupling unit 141, respectively; one end of the second coupling switch 1432 is connected to the first coupling end and the second coupling end of the second coupling unit 142 respectively; a first end of the third coupling switch 1433 is connected to a first end of the first coupling switch 1431 and a second end of the second coupling switch 1432, respectively; the second ends of the third coupling switches 1433 are respectively connected to the two corresponding coupling output ports CPLOUT, so that one of the coupling output ports CPLOUT outputs the first forward coupling signal or the second forward coupling signal, and the other coupling output port CPLOUT outputs the first backward coupling signal or the second backward coupling signal.

Illustratively, the first and

second coupling switches

1431 and 1432 are SPDT switches and the third coupling switch 1433 is a DPDT switch. By controlling the switching of the three coupling switches in the coupling switch unit 143, the first forward coupling signal output by the first coupling unit 141 or the second forward coupling signal output by the second coupling unit 142 may pass through the first coupling output port CPLOUT1, or the first backward coupling signal output by the first coupling unit 141 or the second backward coupling signal output by the second coupling unit 142 may pass through the second coupling output port CPLOUT2, so as to detect the power information of the first coupling signal and the power information of the second coupling signal.

It should be noted that, in the embodiment of the present application, specific types and combinations of the coupling switch units 143 are not further limited.

In one embodiment, the first rf signal includes a 5G signal in the N77 band and a 5G signal in the N78 band. As shown in fig. 7 and 8, the radio frequency PA Mid device 10 is provided with a first transmit port RFIN1, a second transmit port RFIN2 and a third transmit port RFIN3 respectively connected with the radio frequency transceiver. The first transmitting port RFIN1 is configured to receive a 5G signal in an N77 frequency band, the first transmitting port RFIN1 is configured to receive a 5G signal in an N79 frequency band, and the third transmitting port RFIN3 is configured to receive a 5G signal in an N78 frequency band. The first transceiver circuit 110 further includes a third switching unit. The first selection terminal of the third switch unit is connected to the first transmit port RFIN1, the second selection terminal of the third switch unit is connected to the third transmit port RFIN3, and the control terminal of the third switch unit is connected to the input terminal of the first power amplifier 111, so as to selectively conduct the transmit path in which the first transmit port RFIN1 and the third transmit port RFIN3 are located. That is, 5G signals in the N77 band enter the rf PA Mid device 10 through the first transmit port RFIN1, and 5G signals in the N78 band enter the rf PA Mid device 10 through the third transmit port RFIN 3.

In one embodiment, the rf PA Mid device 10 further includes a first control unit 160 and a second control unit 170. Referring to fig. 7, the first control unit 160 is respectively connected to the first switch unit 114, the second switch unit 124, the first power amplifier 111, the second power amplifier 121, and the multi-channel selection switch 130, and is configured to control switching paths of the first switch unit 114, the second switch unit 124, and the multi-channel selection switch 130, and further configured to control operating states of the first power amplifier 111 and the second power amplifier 121. The second control unit 170 is connected to the first low noise amplifier 113 and the second low noise amplifier 123, respectively, and is configured to adjust gain coefficients of the first low noise amplifier 113 and the second low noise amplifier 123. The first low noise amplifier 113 and the second low noise amplifier 123 are gain-adjustable amplification devices to adjust the insertion loss of the receiving link in the rf PA Mid device 10, thereby improving the sensitivity of the rf system. Illustratively, the first low noise amplifier 113 and the second low noise amplifier 123 have 8 gain levels.

Referring to fig. 8, the first control unit 160 is respectively connected to the first power amplifier 111, the second power amplifier 121, and the multi-channel selection switch 130, and is configured to control a switching path of the multi-channel selection switch 130 and further configured to control operating states of the first power amplifier 111 and the second power amplifier 121.

For example, the first Control unit 160 and the second Control unit 170 may be radio frequency Front End Control Interface (RFFE) Control units, which are controlled according to a Control protocol of an RFFE bus. When the first control unit 160 and the second control unit 170 are RFFE control units, the rf PA Mid device 10 is further configured with an input pin CLK for clock signals, an input pin SDATAS for data signals, a reference voltage pin VIO, and the like.

It should be noted that, in the embodiment of the present application, the types of the first control unit 160 and the second control unit 170 are associated with the objects to be controlled by the first control unit 160 and the second control unit 170 (the types of the switching unit, the power amplifier, and the low noise amplifier), and here, the specific types of the first control unit 160 and the second control unit 170 are not further limited.

In one embodiment, each of the rf PA Mid devices 10 shown in fig. 7 can be integrally packaged in the same packaged chip, the pin layout of the packaged chip is shown in fig. 9a, and the structure of the packaged chip is shown in fig. 9 b. Each of the rf PA Mid devices 10 shown in fig. 8 can be integrally packaged in the same packaged chip, the pin layout of the packaged chip is shown in fig. 10a, and the structure of the packaged chip is shown in fig. 10 b. That is, the first transceiver circuit 110, the second transceiver circuit 120, the multi-channel selection switch 130, the first coupling unit 141, the second coupling unit 142, the coupling switch unit 143, the first control unit 160, and the second control unit 170 are all integrated and packaged in the same module, so as to form a packaged chip. The plurality of ports configured in the rf PA Mid device 10 correspond to the pins of the packaged chip one to one. Illustratively, the antenna turn ports (SRS1, SRS2, SRS3 and SRS4) correspond to the antenna pins (SRS1, SRS2, SRS3 and SRS4) of the packaged chip one by one.

In the embodiment of the present application, each device in the rf PA Mid device 10 is packaged in the same chip, which can improve the integration level, reduce the space occupied by each device, and facilitate the miniaturization of the device.

In one embodiment, referring to fig. 1, the radio frequency system includes an antenna group 20 and the radio frequency PA Mid device 10 in any of the above embodiments. Antenna group 20 includes a first antenna Ant0 and a second antenna Ant 1. The first antenna Ant0 and the second antenna Ant1 are both antennas Ant capable of supporting the 5G NR frequency band. The first antenna Ant0 may be configured to receive and transmit (abbreviated as transceiving) a first radio frequency signal and/or a second radio frequency signal, and the second antenna Ant1 may be configured to transceive the first radio frequency signal and/or the second radio frequency signal.

In one embodiment, the first antenna Ant0 and the second antenna Ant1 may be directional antennas Ant or non-directional antennas Ant. For example, the first antenna Ant0 and the second antenna Ant1 may be formed using any suitable type of antenna. For example, the first antenna Ant0 and the second antenna Ant1 may include antennas with resonant elements formed from the following antenna structures: 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 band combining of different radio frequency signals.

The first antenna Ant0 is connected to a second terminal T1 of the multi-channel selection switch 130; and a second antenna Ant1 connected to the other second port T2 of the multi-channel selection switch 130.

The radio frequency system comprises the first antenna Ant0, the second antenna Ant1 and the radio frequency PA Mid device 10, wherein only one multichannel selection switch 130 is arranged inside the radio frequency PA Mid device 10, so that the polling of the dual-band (first radio frequency signal and second radio frequency signal) sounding reference signal between the first antenna Ant0 and the second antenna Ant1 can be realized.

As shown in fig. 11, in one embodiment, the radio frequency system comprises the radio frequency PA Mid device 10, the first antenna Ant0, the second antenna Ant1 and the radio frequency L-DRX device 30 in any of the above embodiments. The second terminal P1 of the multi-channel selection switch 130 in the radio-frequency a Mid device 10 is connected to the first antenna Ant0 through the antenna radio-frequency port SRS 1. The radio frequency L-DRX device 30 is configured with an antenna port ANT and a radio frequency transmit port 5G _ TRX 1. The antenna port ANT of the rf L-DRX device 30 is connected to the second antenna ANT1, and the rf transmitting port 5G _ TRX1 is connected to an antenna rf port SRS2 of the rf PA Mid device 10. The radio frequency L-DRX device 30 may receive the first radio frequency signal and the second radio frequency signal received by the second antenna ANT1 through the antenna port ANT, and perform filtering and amplifying processing on the received first radio frequency signal and the received second radio frequency signal.

Wherein the radio frequency L-DRX device 30 includes a fourth switching unit 310. The fourth switch unit 310 is connected to the antenna port ANT and the rf transmitting port 5G _ TRX1, respectively, and is configured to open a transmitting path between the rf PA Mid device 10 and the second antenna ANT 1. That is, the rf PA Mid device 10 may transmit the transmitted first rf signal and the second rf signal to the rf transmitting port 5G _ TRX1 of the rf L-DRX device 30 through the antenna rf port SRS2, switch to the antenna port ANT through the fourth switch unit 310, and transmit the signals through the second antenna ANT 1.

In the radio frequency system in the above embodiment, the multichannel selection switch 130 is integrated in the radio frequency PA Mid device 10, and is matched with the radio frequency L-DRX device 30, and it is not necessary to provide a plurality of independently cascaded switches, so that the radio frequency signal can be transmitted between the first antenna Ant00 and the second antenna Ant11 in turn, thereby reducing the cost and the area of the substrate occupied by each device in the radio frequency system.

As shown in fig. 12, in one embodiment, the radio frequency L-DRX device 30 is further configured with a radio frequency receiving port and a radio frequency receiving port, and the radio frequency L-DRX device 30 further includes a fifth filter 330, a fifth low noise amplifier 320, a sixth filter 350, and a sixth low noise amplifier 340. The fifth filter 330 is connected to the fourth switching unit 310, and is configured to filter the received first radio frequency signal; the fifth low noise amplifier 320, an input end of the fifth low noise amplifier 320 and the fifth filter 330, and an input end of the fifth low noise amplifier 320 is connected to the radio frequency receiving port, and is configured to amplify the filtered first radio frequency signal. The fifth filter 330 and the fifth low noise amplifier 320 may form a first receiving path of the radio frequency L-DRX device 30, so as to receive the first radio frequency signal.

A sixth filter 350, connected to the fourth switching unit 310, for performing filtering processing on the received second radio frequency signal; the sixth low noise amplifier 340, an input end of the sixth low noise amplifier 340 is connected to the sixth filter 350, and an input end of the sixth low noise amplifier 340 is connected to the radio frequency receiving port, and is configured to amplify the filtered second radio frequency signal. Wherein, the sixth filter 350 and the sixth low noise amplifier 340 may form a second receiving path of the radio frequency L-DRX device 30, so as to implement receiving of the second radio frequency signal.

The type of the fifth filter 330 may be the same as the type of the first filter 112, which may implement filtering processing on the first radio frequency signal, and the fifth low noise amplifier 320 may be the same as the type of the first low noise amplifier 113, which may support amplifying processing on the first radio frequency signal. Accordingly, the sixth filter 350 may be the same type as the second filter 122, and may implement a filtering process on the second radio frequency signal, wherein the sixth low noise amplifier 340 may be the same type as the second low noise amplifier 123 and may support an amplifying process on the second radio frequency signal.

The radio frequency L-DRX device 30 is provided with a radio frequency transmission port 5G _ TRX1, and is matched with the fourth switch unit 310, so that the first radio frequency signal or the second radio frequency signal can be transmitted in a switching manner. Meanwhile, the radio frequency L-DRX device 30 may also support reception control of the first radio frequency signal and the second radio frequency signal.

In one embodiment, the fourth switching unit 310 may be a radio frequency DP4T switch or a DP3T switch. In the embodiment of the present application, the specific type of the fourth switch unit 310 is not further limited.

In one embodiment, the radio frequency L-DRX device 30 further includes a fifth switching unit 360. A first end of the fifth switching unit 360 is connected to the output end of the fifth low noise amplifier 320 and the output end of the sixth low noise amplifier 340, respectively, and a second end of the fifth switching unit 360 is connected to the rf receiving port and the rf receiving port, respectively, and is configured to selectively output the first rf signal and/or the second rf signal.

In one embodiment, the radio frequency L-DRX device 30 further comprises a third control unit 370 connected to the fifth low noise amplifier 320 and the sixth low noise amplifier, respectively, for adjusting the gain factor of the fifth low noise amplifier 320 and the sixth low noise amplifier 340. The third control unit 370 may be of the same type as the second control unit 170 in the previous embodiment, and is not described herein again.

The radio frequency L-DRX device 30 in the above embodiment may also be a packaged chip, and each device in the radio frequency L-DRX device 30 may be integrated in the same chip, so that the integration level of the radio frequency L-DRX device 30 may be improved, and the occupied space of the radio frequency L-DRX device 30 may be reduced.

Further, the radio frequency L-DRX device 30 may further be configured with a plurality of radio frequency transmission ports 5G _ TRX1 connectable to the radio frequency PA Mid device 10 and a plurality of antenna ports Ant connected to the antenna Ant, and is configured to receive the radio frequency signal output by the radio frequency PA Mid device 10 and transmit the received radio frequency signal through the plurality of antenna ports Ant. It should be noted that the fourth switch unit 310 may be respectively connected to the multiple radio frequency transmitting ports 5G _ TRX1 and the multiple antenna ports ANT on the radio frequency L-DRX device 30, so as to control the transceiving modes of the multiple radio frequency signals to be switched.

It should be noted that the radio frequency L-DRX module provided in the embodiment of the present application may support the transceiving control of 5G signals in N77, N79 frequency bands, and the like.

With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to communication devices. The 5G network supports the beamforming technology and can directionally transmit to the communication equipment. For directional transmission, the base station first detects the location of the communication device, the quality of the transmission path, etc., so that the resources of the base station are more accurately allocated to each communication device.

Currently, the communication device feeds back channel information in two different modes, namely Precoding Matrix Indicator (PMI) and channel Sounding Reference Signal (SRS), and Signal transmission is shown in fig. 12a and 12b, respectively. From the standard definition, PMI is a function that all 5G communication devices must support, and SRS is an optional function. The PMI estimates channel information and resource requirements by a base station through a preset mechanism by means of various quantization algorithms after terminal measurement and reports the channel information and the resource requirements to the base station; the SRS makes use of channel reciprocity to allow the terminal to directly report channel information to the base station, which is obviously more accurate.

The communication equipment sends the SRS information, namely a mode for a base station to detect the position and the channel quality of a terminal; the SRS antenna Ant is shown in fig. 14, and is specifically described as follows:

first, 1T 1R: information is fed back to the base station by fixing the antenna Ant0, and the SRS sending is not supported;

first, 1T 4R: SRS information is transmitted from the first antenna Ant0 to the fourth antenna Ant3 in turn, only one antenna is selected for transmission at a time, and the current Non-independent Networking (NSA) adopts the mode;

third, 2T 4R: SRS information is transmitted by turns from the first antenna Ant0 to the fourth antenna Ant3, two antennas are selected to transmit at the same time, and the current independent networking (SA) adopts the mode.

In the SRS mode, the more the number of antennas that can participate in transmitting the reference signal, the more accurate the channel estimation is, and the higher the rate that can be obtained; when the number of the antennas is the same, the SA mode completes channel estimation faster than the NSA mode, and network experience is improved.

At present, various operators propose the functional requirement that 5G NR supports SRS, for example, China Mobile explicitly proposes in the published white paper of Chinese Mobile 5G terminal products, N41/79 must support SRS function (1T2R or 2T 4R); the China Union has clear requirements in the issued 'white paper for 5G terminals in China Union', and N78 must support the alternate transmission of antennas Ant of SRS 1T4R and 2T 4R; the Chinese telecom is provided in 'Chinese telecom 5G all-network communication terminal requirement white paper' issued by China telecom, supports 1-port and 2-port SRS transmission, supports antenna Ant switching, and supports 4-antenna Ant transmission under a recommended N78 frequency band, namely SRS 1T4R and 2T 4R.

As shown in fig. 15a and 15b, in one embodiment, the radio frequency system comprises a radio frequency PA Mid device 10, a first radio frequency L-DRX device 31, a second radio frequency L-DRX device 32, a third radio frequency L-DRX device 33, a first antenna Ant0, a second antenna Ant1, a third antenna Ant2, and a fourth antenna Ant 3. A second end P1 of the multi-channel selection switch 130 of the rf PA Mid device 10 is connected to the first antenna Ant 0; a second terminal P2 of the multi-channel selection switch 130 of the rf PA Mid device 10 is connected to the second antenna Ant1 through the rf transmit port 5G _ TRX1 and the fourth switch unit 310 of the first rf L-DRX device 31; a second terminal P3 of the multi-channel selection switch 130 of the rf PA Mid device 10 is connected to the third antenna Ant2 through the rf transmitting port 5G _ TRX1 and the fourth switch unit 310 of the second rf L-DRX device 32; a second terminal P4 of the multi-channel selection switch 130 of the rf PA Mid device 10 is connected to the fourth antenna Ant3 through the rf transmitting port 5G _ TRX1 and the fourth switching unit 310 of the third rf L-DRX device 33.

Based on the radio frequency system of the embodiment, the SRS function of the four antennas Ant1T4R can be supported. For example, taking fig. 15a as an example, the operating principle of SRS in the N77 frequency band is analyzed:

a first radio frequency signal enters the radio frequency PA Mid device 10 through a first transmission port RFIN1 of the radio frequency PA Mid device 10, then passes through a first power amplifier 111, a first filter 112, a multi-channel selection switch 130, is switched to an antenna wheel transmission port SRS1 through the multi-channel selection switch 130, and is output from a first antenna Ant0 through a path 1; the multi-channel selection switch 130 is switched to an antenna radio port SRS2, the transmitting port of the first L-DRX device is switched to the fourth switching unit 310 through a path 2, the transmitting port is switched to an antenna port ANT through the fourth switching unit 310, and the antenna is output from a second antenna ANT1 through a path 5; the multi-channel selection switch 130 is switched to an antenna round port SRS3, the transmitting port of the second L-DRX device is switched to the fourth switching unit 310 through a path 3, the transmitting port of the second L-DRX device is switched to an antenna port ANT through the fourth switching unit 310, and the signals are output from a third antenna Ant2 through a path 6; the multi-channel selection switch 130 is switched to the antenna round port SRS4, is switched to the transmitting port of the third L-DRX device through the path 4 to the fourth switching unit 310, is switched to the antenna port ANT through the fourth switching unit 310, and is output from the fourth antenna ANT3 through the path 7.

The function of the SRS transmitted in the N79 frequency band is similar to that in the N77 frequency band, and is not described again. The 1T4R SRS path configurations of the N77 and N79 bands are shown in table 5.

TABLE 51T 4R SRS detailed Path configuration Table

	N77	N79
			Channel0	Route
1	Route 1
		Channel1	Path 2->Route 5	Path 2->Route 5
Channel2	Path 3->Path 6				Path 3->Path 6
		Channel3	Path 4->Path 7	Path 4->Path 7

As shown in fig. 16a and 16b, in one embodiment, the radio frequency system comprises a first radio frequency PA Mid device 11, a first radio frequency PA Mid device 12, a first radio frequency L-DRX device 31, a second radio frequency L-DRX device 32, a first antenna Ant0, a second antenna Ant1, a third antenna Ant2 and a fourth antenna Ant 3. A second end P1 of the multi-channel selection switch 130 of the first rf PA Mid device 11 is connected to the first antenna Ant0 through the antenna port SRS 1; a second terminal P2 of the multi-channel selection switch 130 of the first rf PA Mid device 11 is connected to the second antenna Ant1 via the antenna round port SRS2, the rf transmit port 5G _ TRX1 of the first rf L-DRX device 31, and the fourth switching unit 310; a second terminal P3 of the multi-channel selection switch 130 of the first rf PA Mid device 11 is connected to the third antenna Ant2 via the antenna round port SRS3, the rf transmit port 5G _ TRX1 of the second rf L-DRX device 32, and the fourth switch unit 310; a second terminal P4 of the multi-channel selection switch 130 of the first rf PA Mid device 11 is connected to the antenna port SRS4 of the second rf PA Mid device 10 through the antenna port SRS4, and the antenna port SRS2 of the second rf PA Mid device 12 is connected to the fourth antenna Ant 3.

Based on the radio frequency system of the embodiment, the SRS function of the four antennas Ant2T4R can be supported. A specific 2T4R SRS path configuration is shown in table 6.

TABLE 62T 4R SRS detailed Path configuration Table

	N77	N79
			Channel0	Route
1	Route 1
		Channel1	Path 2->Route 5	Path 2->Route 5
Channel2	Path 3->Path 6				Path 3->Path 6
		Channel3	Path 4->Route 8	Path 4->Route 8

In tables 5 and 6, Channel0, Channel1, Channel2 and Channel3 are transmission paths of the antenna Ant by turns.

The radio frequency system in the above embodiment can support the SRS function of 1T4R or the SRS function of 2T4R, and meanwhile, the radio frequency system is provided with the radio frequency L-DRX device 30 and the radio frequency PA Mid device 10 based on the package, and the radio frequency signals can be alternately transmitted among the first antenna Ant0, the second antenna Ant1, the third antenna Ant2 and the fourth antenna Ant3 without a plurality of independently cascaded switches, so that the cost is reduced, and the area of the substrate occupied by each device in the radio frequency system is reduced.

As shown in fig. 17, an embodiment of the present application further provides a communication device, where the radio frequency transceiving system and the radio frequency transceiver 90 in any of the above embodiments are disposed on the communication device. Illustratively, the radio frequency transceiver 90 may include a transmitter (such as the transmitter TX) and a receiver (such as the receiver RX), or may include only the receiver (e.g., the receiver RX) or only the transmitter (e.g., the transmitter TX). The radio frequency transceiver 90 may be configured to perform frequency conversion between the intermediate frequency signal and the baseband signal, and/or perform frequency conversion between the intermediate frequency signal and the high frequency signal, and so on.

By arranging the radio frequency transceiving system on the communication equipment, the integration level of the radio frequency transceiving system is improved, the area of a substrate occupied by each device in the radio frequency transceiving system is reduced, meanwhile, the power supply and logic control of the radio frequency PA Mid device 10 and the radio frequency L-DRX module and the layout and wiring of a PCB (printed circuit board) can be simplified, and the cost is saved.

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 shall be subject to the appended claims.

Claims

1. A radio frequency PA Mid device configured with a first transmit port for connection to a radio frequency transceiver, a second transmit port, and a plurality of antenna wheel transmit ports for connection to an antenna, the radio frequency PA Mid device comprising:

the multi-channel selection switch comprises at least two first ends and a plurality of second ends, wherein one first end is connected with the first transceiver circuit, the other first end is connected with the second transceiver circuit, the second ends are respectively connected with the antenna radiation ports in a one-to-one correspondence mode, the multi-channel selection switch is used for selectively conducting transmitting paths between the first transceiver circuit and the second transceiver circuit and any antenna radiation port respectively so as to support the function that double-frequency-band detection reference signals are transmitted among the antennas through the antenna radiation ports in a wheel-to-wheel mode.

2. The radio frequency (PA) Mid device of claim 1, wherein the first transceiver circuit comprises:

the input end of the first power amplifier is connected with the first transmitting port and is used for amplifying the first radio-frequency signal;

the first filter is respectively connected with the output end of the first power amplifier and a first end of the multi-channel selection switch and is used for filtering the received first radio-frequency signal;

the second transceiver circuit includes:

the input end of the second power amplifier is connected with the second transmitting port and is used for amplifying the second radio-frequency signal;

and the second filter is respectively connected with the output end of the second power amplifier and the other first end of the multi-channel selection switch and is used for filtering the received second radio-frequency signal.

3. The rf PA Mid device according to claim 2, further configured with a first receive port, a second receive port for connection to an rf transceiver, the first transceiving circuit further comprising:

the output end of the first low-noise amplifier is connected with the first receiving port and is used for amplifying the received first radio-frequency signal;

a first switch unit, connected to the output terminal of the first power amplifier, the input terminal of the first low noise amplifier, and the first filter, respectively, for selectively turning on a receiving path where the first receiving port is located or a transmitting path where the first transmitting port is located;

the second transceiver circuit further comprises:

the output end of the second low-noise amplifier is connected with the second receiving port and is used for amplifying the received second radio-frequency signal;

and the second switch unit is respectively connected with the output end of the second power amplifier, the input end of the second low-noise amplifier and the second filter and is used for selectively conducting a receiving path where the second receiving port is located or a transmitting path where the second transmitting port is located.

4. The radio frequency PA Mid device according to claim 3, wherein the number of the antenna radial ports is four, the multi-channel selection switch includes two first ends and four second ends, one of the first ends is connected to the first filter, the other of the first ends is connected to the second filter, and the four second ends of the multi-channel selection switch are respectively connected to the four antenna radial ports in a one-to-one correspondence.

5. The RF PA Mid device of claim 4, wherein the multi-channel selection switch is an RF DP4T switch.

6. The RF PA Mid device of claim 2, further configured with a first receive port, a second receive port for connection to a radio frequency transceiver, the multi-channel selection switch including four first terminals, wherein,

the first transceiver circuit further comprises:

the output end of the third low-noise amplifier is connected with the first receiving port and is used for amplifying the received first radio-frequency signal;

the third filter is respectively connected with the input end of the third low-noise amplifier and the other first end of the multi-channel selection switch and is used for filtering the received first radio-frequency signal;

the second transceiver circuit further comprises:

an output end of the fourth low noise amplifier is connected with the first receiving port, and is used for amplifying the received second radio frequency signal;

and the fourth filter is respectively connected with the input end of the fourth low-noise amplifier and the first end of the multi-channel selection switch and is used for filtering the received second radio-frequency signal.

7. The radio frequency PA Mid device according to claim 6, wherein the multi-channel selection switch includes four second ends, the number of the antenna radial ports is four, and the four second ends of the multi-channel selection switch are respectively connected to the four antenna radial ports in a one-to-one correspondence.

8. The RF PA Mid device of claim 7, wherein the multi-channel selection switch is a RF 4P4T switch.

9. The radio frequency PA Mid device according to claim 2, wherein the radio frequency PA Mid device is configured with a coupled output port, the radio frequency PA Mid device further comprising:

a first coupling unit, disposed in a transmission path of the first transceiver circuit, for coupling the first radio frequency signal to output a first forward coupling signal and a first backward coupling signal;

a second coupling unit, disposed in a transmission path of the second transceiver circuit, for coupling the second radio frequency signal to output a second forward coupling signal and a second backward coupling signal via the coupling output port;

and the coupling switch unit is respectively connected with the first coupling unit and the second coupling unit and is used for selectively outputting a first forward coupling signal, a first backward coupling signal, a second forward coupling signal or a second backward coupling signal through the coupling output port.

10. The radio frequency PA Mid device of claim 9, wherein the coupling switch unit comprises:

at least four first contacts, one of the first contacts is connected with the first coupling end of the first coupling unit, one of the first contacts is connected with the second coupling end of the first coupling unit, one of the first contacts is connected with the first coupling end of the second coupling unit, and one of the first contacts is connected with the second coupling end of the second coupling unit;

two second contacts, one said second contact being connected to ground, one said second contact being connected to said coupler output port.

11. The rf PA Mid device according to claim 10, further configured with a coupling input port, the coupling input port being connected to a first contact of the coupling switch unit, the coupling input port being configured to receive an externally coupled signal and output the coupled signal via the coupling output port.

12. The rf PA Mid device according to claim 10, further comprising a resistor, wherein the second contact is connected to ground via the resistor.

13. The radio frequency PA Mid device of claim 9, wherein the coupling switch unit comprises:

one end of the first coupling switch is respectively connected with the first coupling end and the second coupling end of the first coupling unit;

one end of the second coupling switch is respectively connected with the first coupling end and the second coupling end of the second coupling unit;

the first end of the third coupling switch is respectively connected with the first end of the first coupling switch and the second end of the second coupling switch; the second end of the third coupling switch is respectively connected with the two corresponding coupling output ports, so that one of the coupling output ports outputs the first forward coupling signal or the second forward coupling signal, and the other coupling output port outputs the first reverse coupling signal or the second reverse coupling signal.

14. The RF PA Mid device of claim 2, wherein the first RF signals include 5G signals in the N77 band and/or 5G signals in the N78 band, and the second RF signals are 5G signals in the N79 band.

15. The radio frequency PA Mid device of claim 14, wherein the first radio frequency signal comprises a 5G signal of N77 band and a 5G signal of N78 band; the radio frequency PA Mid device is also provided with a third transmitting port, wherein the first transmitting port is used for receiving 5G signals of an N77 frequency band, and the third transmitting port is used for receiving 5G signals of an N78 frequency band; wherein the first transceiver circuit further comprises:

and a third switching unit, where a first selection end of the third switching unit is connected to the first transmit port, a second selection end of the third switching unit is connected to the third transmit port, and a control end of the third switching unit is connected to the input end of the first power amplifier, and is used to selectively turn on a transmit path where the first transmit port and the third transmit port are located.

16. A radio frequency system, comprising:

the radio frequency PA Mid device of any of claims 1-15;

an antenna group comprising at least:

17. The radio frequency system of claim 16, further comprising:

the radio frequency L-DRX device is configured with an antenna port and a radio frequency transmitting port and is used for receiving a first radio frequency signal and a second radio frequency signal through the antenna port and carrying out filtering amplification processing on the received first radio frequency signal and the received second radio frequency signal; wherein the content of the first and second substances,

the radio frequency L-DRX device includes: and the fourth switch unit is used for conducting a transmitting path between the radio frequency PA Mid device and the second antenna.

18. The radio frequency system according to claim 17, wherein the radio frequency L-DRX device is further configured with a radio frequency receive port and a radio frequency receive port, the radio frequency L-DRX device further comprising:

the fifth filter is connected with the fourth switch unit and is used for filtering the received first radio-frequency signal;

the input end of the fifth low-noise amplifier is connected with the fifth filter, and the input end of the fifth low-noise amplifier is connected with the radio frequency receiving port and is used for amplifying the first radio frequency signal after filtering;

the sixth filter is connected with the fourth switch unit and used for filtering the received second radio frequency signal;

and the input end of the sixth low-noise amplifier is connected with the sixth filter, and the input end of the sixth low-noise amplifier is connected with the radio frequency receiving port and is used for amplifying the filtered second radio frequency signal.

19. The radio frequency system according to claim 18, wherein the radio frequency L-DRX device further comprises:

and a first end of the fifth switching unit is respectively connected with the output end of the fifth low noise amplifier and the output end of the sixth low noise amplifier, and a second end of the fifth switching unit is respectively connected with the radio frequency receiving port and is used for selectively outputting the first radio frequency signal and/or the second radio frequency signal.

20. The radio frequency system according to claim 17, wherein the number of the radio frequency L-DRX devices is three, which are a first radio frequency L-DRX device, a second radio frequency L-DRX device, and a third radio frequency L-DRX device, respectively; the antenna group further comprises a third antenna and a fourth antenna;

a second end of a multi-channel selection switch of the radio frequency PA Mid device is connected with the first antenna through an antenna radio port;

a second end of the multi-channel selection switch of the radio frequency PA Mid device is connected with the second antenna through an antenna radio port, a radio frequency transmitting port of the first radio frequency L-DRX device and a fourth switch unit;

a second end of the multi-channel selection switch of the radio frequency PA Mid device is connected with the third antenna through an antenna radio port, a radio frequency transmitting port of the second radio frequency L-DRX device and a fourth switch unit;

and a second end of the multi-channel selection switch of the radio frequency PA Mid device is connected with the fourth antenna through an antenna radio port, a radio frequency transmitting port of the third radio frequency L-DRX device and a fourth switch unit.

21. The rf system of claim 17, wherein the number of the rf PA Mid devices is two, which are a first rf PA Mid device and a second rf PA Mid device respectively; the number of the radio frequency L-DRX devices is two, and the radio frequency L-DRX devices are respectively a first radio frequency L-DRX device and a second radio frequency L-DRX device; the antenna group further comprises a third antenna and a fourth antenna;

a second end of the multi-channel selection switch of the first radio frequency PA Mid device is connected with the first antenna through an antenna radio port;

a second end of the multi-channel selection switch of the first radio frequency PA Mid device is connected with the second antenna through an antenna radio port, a radio frequency transmitting port of the first radio frequency L-DRX device and a fourth switch unit;

a second end of the multi-channel selection switch of the first radio frequency PA Mid device is connected with the third antenna through an antenna radio port, a radio frequency transmitting port of the second radio frequency L-DRX device and a fourth switch unit;

a second end of the multi-channel selection switch of the first radio frequency PA Mid device is connected with an antenna radial port of the second radio frequency PA Mid device through an antenna radial port, and another antenna radial port of the second radio frequency PA Mid device is connected with the fourth antenna.

22. A communication device, comprising:

the radio frequency system of any of claims 17-21, the radio frequency system connected with the radio frequency transceiver.