CN112769438B

CN112769438B - Radio frequency MMPA device, radio frequency system and communication equipment

Info

Publication number: CN112769438B
Application number: CN202110015255.5A
Authority: CN
Inventors: 王国龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2022-12-09
Anticipated expiration: 2041-01-06
Also published as: CN112769438A

Abstract

The application provides a radio frequency MMPA device, a radio frequency system and a communication device, wherein, the radio frequency MMPA device is configured with a high frequency input port for connecting a radio frequency transceiver and a plurality of transceiving port groups for connecting an antenna, each transceiving port group comprises a first receiving port and a first transceiving port, the radio frequency MMPA device comprises: the input end of the first power amplifier is connected with the high-frequency input port and used for receiving and amplifying a plurality of high-frequency signals; the first switch unit is respectively connected with the output end of the first power amplifier, the first transceiving ports and the first receiving ports, and is used for selectively conducting a transmitting channel between the first power amplifier and any one of the first transceiving ports and selectively conducting a receiving channel between the first transceiving port and the first receiving port in any one of the transceiving port groups, so that the integration level of the radio frequency MMPA device can be improved, and the area is saved.

Description

Radio frequency MMPA 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 MMPA device, a radio frequency system, and a communication device.

Background

With the development and progress of the technology, mobile communication technology is gradually beginning to be applied to electronic devices. In order to realize the transmission function of supporting high-frequency signals of different frequency bands, a plurality of independent power amplification modules are generally adopted to realize power amplification for comparing different high-frequency signals, and the area occupied by the power amplification modules is large.

Disclosure of Invention

The embodiment of the application provides a radio frequency MMPA device, a radio frequency system and communication equipment, which can improve the integration level of the radio frequency MMPA device and save the area.

An embodiment of the present application provides a radio frequency MMPA device, configured with a high frequency input port for connecting to a radio frequency transceiver and a plurality of transceiver port groups for connecting to an antenna, each of the transceiver port groups including a first receiving port and a first transceiver port, the radio frequency MMPA device including:

the input end of the first power amplifier is connected with the high-frequency input port and is used for receiving and amplifying a plurality of high-frequency signals;

the first switch unit is respectively connected with the output end of the first power amplifier, the first transceiving ports and the first receiving ports, and is used for selectively conducting a transmitting path between the first power amplifier and any one of the first transceiving ports and selectively conducting a receiving path between the first transceiving port and the first receiving port in any one of the transceiving port groups.

An embodiment of the present application provides a radio frequency system, including: a radio frequency transceiver, a first antenna, a filtering module, a transmitting module, a first receiving module and the radio frequency MMPA device as described above, wherein,

the high-frequency input port of the radio frequency MMPA device is connected with the radio frequency transceiver;

the filtering module at least comprises a plurality of first filtering units, wherein the plurality of first filtering units are respectively connected with the plurality of first transceiving ports in a one-to-one correspondence manner, and the first filtering units are used for filtering the high-frequency signals output by the radio frequency MMPA device;

the transmitting module is configured with an antenna port and a plurality of second transceiving ports, wherein the antenna port is connected with the first antenna, and the plurality of second transceiving ports are connected with the plurality of first filtering units in a one-to-one correspondence manner;

the first receiving module is configured with a plurality of second receiving ports, which are respectively connected with the plurality of first receiving ports, and used for supporting receiving amplification processing of a plurality of high-frequency signals.

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

The radio frequency MMPA device, the radio frequency system and the communication equipment have the advantages that the first switch unit is introduced into the radio frequency MMPA device, so that the switching between different high-frequency signals is realized by avoiding using a plurality of independent power amplification modules or power divider modules, and the switching between a receiving path and a transmitting path is realized, further, the occupied area of the radio frequency MMPA device can be greatly reduced, the purpose of simplifying the internal structure of the radio frequency MMPA device is achieved, in addition, the insertion loss value of the radio frequency MMPA device can be correspondingly reduced, further, the transmitting power of the high-frequency signals can be reduced, and the purpose of reducing the power consumption is achieved.

Drawings

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

FIG. 1 is one of the block diagrams of the structure of an RF MMPA device in one embodiment;

FIG. 2 is a second block diagram of the structure of the RF MMPA device in one embodiment;

FIG. 3 is a third block diagram of the structure of the RF MMPA device in one embodiment;

FIG. 4 is a block diagram of the structure of an RF MMPA device in an embodiment;

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

FIG. 6 is a second block diagram of the RF system in one embodiment;

FIG. 7 is a third block diagram illustrating an exemplary RF system;

FIG. 8 is a fifth block diagram of the architecture of the RF MMPA device in one embodiment;

FIG. 9 is a sixth block diagram of the architecture of the RF MMPA device in one embodiment;

FIG. 10 is a block diagram of the RF system in one embodiment;

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

FIG. 12 is a sixth block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 13 is a seventh block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 14 is an eighth block diagram of the architecture of the radio frequency system in one embodiment;

FIG. 15 is a block diagram of an RF system in accordance with an exemplary embodiment;

FIG. 16 is a block diagram showing the structure of an RF system in one embodiment;

FIG. 17 is one of block diagrams of a structure of a transmitting module in one embodiment;

fig. 18 is a second block diagram of the structure of the transmitting module in one embodiment.

FIG. 19 is a third block diagram illustrating the structure of a transmitter module in one embodiment;

FIG. 20 is an eleventh block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 21 is a fourth block diagram of the structure of a transmit module in one embodiment;

FIG. 22 is a twelfth block diagram illustrating the architecture of the RF system in one embodiment;

FIG. 23 is a fifth block diagram of the structure of a transmit module in one embodiment;

fig. 24 is a block diagram showing a configuration of a radio frequency system in accordance with an embodiment.

Detailed Description

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

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

The radio frequency MMPA device according to the embodiment of the present application may be applied to a communication device with a wireless communication function, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a communication device. The network devices may include base stations, access points, and the like.

The present embodiment provides a radio frequency MMPA device 10. The rf MMPA device 10 may be understood as a multi-mode multi-band Power Amplifier (MMPA). The radio frequency MMPA device 10 may support transmission of a plurality of high frequency signals of different frequency bands to realize transmission switching control between the plurality of high frequency signals, and may also be used as a transmission device for a plurality of high frequency signal receiving channels. The plurality of high-frequency signals may include high-frequency signals of different frequency bands and different duplexing systems in 4G LTE signals and 5G NR signals. Specifically, the frequency bands of the plurality of high frequency signals may include at least B38, B7, B40, B41, N7, and N41. Wherein, N7 and N41 respectively correspond to the shared receiving and transmitting channels with B7 and B41. Optionally, the high frequency signal may also include a high frequency signal in a WCDMA signal.

As shown in fig. 1 and 2, in one embodiment, the radio frequency MMPA device 10 may be understood as a package structure, and the radio frequency MMPA device 10 is configured with a high frequency input port HB RFIN for connecting a radio frequency transceiver and a plurality of transceiving port groups for connecting an antenna. Each group of transceiving ports comprises a first receiving port HBRX and a first transceiving port HB. The high frequency input port HB RFIN and the plurality of transceiver port groups configured in the radio frequency MMPA device 10 may be understood as radio frequency pin terminals of the radio frequency MMPA device 10, and are used for connecting to external devices. Specifically, the high-frequency input port HB RFIN may be configured to be connected to a radio frequency transceiver and configured to receive a plurality of high-frequency signals sent by the radio frequency transceiver, and the radio frequency MMPA device 10 may amplify the plurality of input high-frequency signals. The number of the transceiving port groups is greater than or equal to the number of the high-frequency signals, wherein each group of transceiving port groups is used for transmitting one high-frequency signal, and the high-frequency signals transmitted by the transceiving port groups are different.

Specifically, the radio frequency MMPA device 10 includes a first power amplifier 110 and a first switching unit 120. The input end of the first power amplifier 110 is connected to the high-frequency input port HB RFIN, and the output end of the first power amplifier 110 is connected to the first switch unit 120, and is configured to receive and amplify a plurality of high-frequency signals, and output the amplified high-frequency signals to the first switch unit 120, so as to selectively output the amplified high-frequency signals to the corresponding first transceiving port HB. That is, the first power amplifier 110 can support power amplifier processing of a plurality of high frequency signals, and the first power amplifier 110 may be understood as a high frequency power amplifier.

The first switch unit 120 is further connected to the plurality of first transceiving ports (e.g., HB1, HB2, HB3, and HB 4) and the plurality of first receiving ports (e.g., HBRX1, HBRX2, HBRX3, and HBRX 4), respectively, and is configured to selectively turn on a transmission path between the first power amplifier 110 and any one of the first transceiving ports, so that the plurality of high-frequency signals amplified by the first power amplifier 110 may be transmitted to the corresponding first transceiving port through the corresponding transmission path and output. The first switch unit 120 may further be configured to selectively turn on a receiving path between a first transceiving port (e.g., HB 1) and a first receiving port (e.g., HBRX 1) in any transceiving port group, so that the first transceiving port HB1 of the radio frequency MMPA device 10 may correspondingly receive a high frequency signal in a corresponding frequency band, and output the received high frequency signal through the receiving path and the first receiving port HBRX1, and transmit the received high frequency signal to a corresponding first receiving module for processing.

In the radio frequency MMPA device 10 in the above embodiment, the first switch unit 120 is introduced into the radio frequency MMPA device 10, so as to avoid using a plurality of independent power amplification modules or power divider modules to realize switching between different high frequency signals and switching between a receiving path and a transmitting path, and further, the occupied area of the radio frequency MMPA device 10 can be greatly reduced, and the purpose of simplifying the internal structure of the radio frequency MMPA device 10 is achieved.

In one embodiment, the first switch unit 120 includes a first rf switch 121 and a plurality of second rf switches 122, wherein a first end of the first rf switch 121 is connected to the output end of the first power amplifier 110, and a plurality of second ends of the first rf switch 121 are respectively connected to a first end of each of the second rf switches 122 in a one-to-one correspondence manner. The plurality of second rf switches 122 are respectively connected to the plurality of transceiver port groups in a one-to-one correspondence. For each second rf switch 122, the other first end and the second end of the second rf switch 122 are connected to the first receiving port and the first transceiving port in the same transceiving port group in a one-to-one correspondence manner. Specifically, the number of the second terminals of the first rf switches 121 may be equal to the number of the second rf switches 122, and in addition, the number of the second rf switches 122 may also be greater than or equal to the number of the transceiver antenna groups.

For convenience of description, in the embodiment of the present application, a high-frequency signal includes four signals B7 (N7), B38, B40, and B41 (N41), and four transceiver antenna groups are taken as an example for description. Among them, the first switching unit 120 may include an SP4T switch and four SPDT switches (e.g., may be denoted as SPDT #1, SPDT #2, SPDT #3, SPDT # 4). The single terminal (contact 1) of the SP4T switch is connected to the output terminal of the first power amplifier 110, the four selection terminals (

contacts

2, 3, 4, 5) of the SP4T switch are connected to the contacts 2 of the SPDT #1, the contacts 2 of the SPDT #2, the contacts 2 of the SPDT #3, and the contacts 2 of the SPDT #4 in a one-to-one correspondence manner, the contacts 3 of the SPDT #1, the contacts 3 of the SPDT #3, and the contacts 3 of the SPDT #4 are connected to the four first receiving ports rx1, HBRX2, HBRX3, and HBRX4 in a one-to-one correspondence manner, and the contacts 1 of the SPDT #1, the contacts 1 of the SPDT #2, the contacts 1 of the SPDT #3, and the contacts 1 of the SPDT #4 are connected to the four first transmitting and receiving ports HB1, HB2, HB3, and HB4 in a one-to-one correspondence manner. For example, the first transceiving port HB1 may be configured to transceive B7 (N7) band signals, the first transceiving port HB2 may be configured to transceive B41 (N41) band signals, the first transceiving port HB3 may be configured to transceive B38 band signals, and the first transceiving port HB4 may be configured to transceive B40 band signals. It should be noted that the frequency bands of signals transmitted by the first transceiving port HB and the first transmitting port in the same transceiving port are the same.

Based on the radio frequency MMPA device 10 shown in fig. 1, taking high frequency signals in the B38 frequency band as an example, analysis of the transmission path and the reception path is performed:

transmission path of B38 band signal:

the high-frequency input port HB RFIN → the first power amplifier 110 → the SP4T switch (contact 1) → the SP4T switch (contact 3) → the SDPT #3 (contact 2) → the SDPT #3 (contact 1) → the first transmission/reception port HB3 port output;

receiving path of B38 frequency band signal:

the first transceiver port HB3 port → SDPT #3 (contact 1) → SDPT #3 (contact 3) → the first receiver port HBRX3 port, and outputs the signals to the corresponding first receiver module.

Further, when the first rf switch 121 is an SP4T switch, the insertion loss value of the SP4T switch can be shown in table 1, and the insertion loss value of the SPDT switch can be shown in table 2.

TABLE 1 SP4T insertion loss values

Frequency (MHz)	690～960	1700～2200	2300～2700
				Loss (dB)	0.25	0.3	0.35

TABLE 2 SPDT insertion loss values

Frequency (MHz)	1000～1600	1600～3000	3000～4500
				Loss (dB)	0.20	0.25	0.30

Based on the rf MMPA device 10 shown in fig. 1, the insertion loss value of the transmission path for transmitting the B38 frequency band signal can be reduced by 4.7dB compared with the conventional technique, which greatly reduces the insertion loss value inside the device, and further improves the communication performance of the rf MMPA device 10, and achieves the purpose of reducing power consumption.

As shown in fig. 2, in one embodiment, the first switch unit 120 includes a first multi-channel selection switch 123, wherein the first multi-channel selection switch 123 includes a plurality of first terminals and a plurality of second terminals. A first end is connected to the output end of the first power amplifier 110, the remaining first ends are respectively connected to the first receiving ports in a one-to-one correspondence manner, and the second ends are respectively connected to the first receiving/transmitting ports in a one-to-one correspondence manner.

For convenience of description, in the embodiment of the present application, a high frequency signal includes four signals B7 (N7), B38, B40, and B41 (N41), and four transmit/receive antenna groups are taken as an example for description. Therein, the first switching unit 120 may include a first multi-channel selection switch 123, for example, a 4P5T switch. Therein, the first multi-channel selection switch 123 may include five first terminals (

contacts

1, 2, 3, 4, 5) and four second terminals (

contacts

6, 7, 8, 9). A first end (contact 3) is connected to the output end of the first power amplifier 110, four first ends (

contacts

1, 2, 4, 5) are respectively connected to the four first receiving ports HBRX1, HBRX2, HBRX3, and HBRX4 in a one-to-one correspondence, and four second ends (

contacts

6, 7, 8, 9) are respectively connected to the four first transceiving ports HB1, HB2, HB3, and HB4 in a one-to-one correspondence.

Based on the radio frequency MMPA device 10 shown in fig. 2, taking high frequency signals in the B38 frequency band as an example, analysis of the transmission path and the reception path is performed:

transmission path of B38 frequency band signal:

the high-frequency input port HB RFIN → the first power amplifier 110 → the 4P5T switch (contact 3) → the 4P5T switch (contact 7) → the first transmission/reception port HB3 port output;

receiving path of B38 frequency band signal:

the first transceiver port HB3 port → 4P5T switch (contact 7) → 4P5T switch (contact 1) → first receiver port HBRX3 port, and outputs the output to the corresponding first receiver module.

As shown in fig. 2, the radio frequency MMPA device 10 may integrate the first radio frequency switch 121 and the plurality of second radio frequency switches 122 into one first multi-channel selection switch 123, which may further reduce the cost and the occupied area of the radio frequency MMPA device 10, and the saved area may be used for performance improvement of other modules, and in addition, the control logic of the integrated first multi-turn-off selection switch is simpler.

As shown in fig. 3 and 4, in one embodiment, the radio frequency MMPA device 10 is configured with an intermediate frequency input port MB RFIN for connecting to a radio frequency transceiver, a low frequency input port LB RFIN, and a plurality of intermediate frequency transmit ports MB and a plurality of low frequency transmit ports LB for connecting to an antenna. The radio frequency MMPA device 10 also includes a first transmit circuit 130. The input end of the first transmitting circuit 130 is respectively connected to the intermediate frequency input port MB RFIN and the low frequency input port LB RFIN, the output end of the first transmitting circuit 130 is respectively correspondingly connected to the plurality of intermediate frequency transmitting ports MB and the plurality of low frequency transmitting ports LB, and the first transmitting circuit 130 is configured to support selective transmission of a plurality of intermediate frequency signals and selective transmission of a plurality of low frequency signals. The plurality of intermediate frequency signals may include intermediate frequency signals of different frequency bands in WCDMA signals, 4G LTE signals, and 5G NR signals, and the plurality of low frequency signals may include low frequency signals of different frequency bands in WCDMA signals, 4G LTE signals, and 5G NR signals.

Specifically, the first transmitting circuit 130 includes a second power amplifier 131 and a third rf switch 132. An input end of the second power amplifier 131 is connected to the intermediate frequency input port MB RFIN, an output end of the second power amplifier 131 is connected to a first end of the third rf switch 132, and the second power amplifier can amplify the received multiple intermediate frequency signals and output the amplified multiple intermediate frequency signals to the third rf switch 132. That is, the second power amplifier 131 can support an amplification process of a plurality of intermediate frequency signals. A plurality of second terminals of the third rf switch 132 are respectively connected to the plurality of if transmitting ports MB in a one-to-one correspondence manner, and are configured to conduct a radio frequency path between the second power amplifier 131 and any if transmitting port MB, so as to support selective transmission of the plurality of if signals. Further, the third rf switch 132 may be an SPnT switch, where n is greater than or equal to the total number of intermediate frequency signals. For example, if the intermediate frequency signals may include intermediate frequency signals of five frequency bands B1, B2, B3, B34, and B39, the third rf switch 132 may be set as an SP5T switch.

The first transmitting circuit 130 further includes a third power amplifier 133 and a fourth radio frequency switch 134, wherein an input end of the third power amplifier 133 is connected to the low frequency input port LB RFIN, and an output end of the third power amplifier 133 is connected to a first end of the fourth radio frequency switch 134, and is capable of amplifying the received multiple low frequency signals and outputting the amplified multiple low frequency signals to the fourth radio frequency switch 134. That is, the third power amplifier 133 can support an amplification process of a plurality of low frequency signals. The second ends of the fourth rf switch 134 are respectively connected to the low-frequency transmitting ports LB in a one-to-one correspondence, and are configured to conduct the rf path between the third power amplifier 133 and any low-frequency transmitting port LB, so as to support selective transmission of the plurality of low-frequency signals. Further, the fourth radio frequency switch 134 may be a SPmT switch, where m is greater than or equal to the total number of low frequency signals. For example, the low frequency signals may include low frequency signals of three frequency bands B5, B8, and B28, and the fourth rf switch 134 may be set as an SP3T switch.

It should be noted that the third rf switch 132 and the fourth rf switch 134 may also include a plurality of other types of switches, which can selectively switch the rf signals of different frequency bands.

In one embodiment, the radio frequency MMPA device 10 may be configured with two low frequency input ports LB1 RFIN, LB2RFIN, wherein the first transmitting circuit 130 may further include a single-pole double-throw switch, wherein two first ends of the single-pole double-throw switch are respectively connected to the two low frequency input ports LB RFIN in a one-to-one correspondence, and a second end of the single-pole double-throw switch is connected to an input end of the third power amplifier 133. By arranging the two low-frequency input ports LB RFIN and the single-pole double-throw switch, the control flexibility of the low-frequency signal can be correspondingly improved.

The radio frequency MMPA device 10 in this embodiment includes the first power amplifier 110, the second power amplifier 131, the third power amplifier 133, and the plurality of radio frequency switches, and can support transmission control of a plurality of radio frequency signals in three bands, which are low in occupied area, low in cost, and simple in control logic.

As shown in fig. 5 and 6, an embodiment of the present application further provides a radio frequency system. In one embodiment, a radio frequency system comprises: the antenna device includes a radio frequency transceiver 20, a first antenna Ant0, a filtering module 30, a transmitting module 40, a first receiving module 50, and the radio frequency MMPA device 10 in any of the above embodiments.

In one embodiment, the first antenna Ant0 may support transceiving of a plurality of radio frequency signals in three bands of low, medium and high frequencies. The first antenna Ant0 may be formed using any suitable type of antenna. For example, the first antenna Ant0 may include an antenna having a resonant element formed of the following antenna structure: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for different frequency bands and frequency band combinations. In the embodiment of the present application, the type of the first antenna Ant0 is not further limited.

The radio frequency MMPA device 10 is configured with a high frequency input port HB RFIN, a medium frequency input port MB RFIN, and a low frequency input port LB RFIN, which are respectively and correspondingly connected to the radio frequency transceiver 20 to correspondingly receive radio frequency signals of each frequency band sent by the radio frequency transceiver 20. Specifically, when the radio frequency MMPA device 10 is configured with the high frequency input port HB RFIN, the high frequency signal output by the radio frequency transceiver 20 may be transmitted to the radio frequency MMPA device 10 through the high frequency output port. When the radio frequency MMPA device 10 is configured with the intermediate frequency input port MB RFIN and the low frequency input port LB RFIN, the intermediate frequency signal output by the radio frequency transceiver 20 may be transmitted to the radio frequency MMPA device 10 through the intermediate frequency output port, and the low frequency signal output by the radio frequency transceiver 20 may be transmitted to the radio frequency MMPA device 10 through the low frequency output port.

The filtering module 30 at least includes a plurality of first filtering units 310, wherein the plurality of first filtering units 310 are respectively connected to the plurality of first transceiving ports HB in a one-to-one correspondence manner, and each first filtering unit 310 is configured to filter the high-frequency signal output by the first transceiving port HB. Each first filtering unit 310 only allows the high-frequency signal in the preset frequency band to pass through so as to filter the stray waves in other frequency bands, and the frequency bands of the high-frequency signals output by each first filtering unit 310 are different. Specifically, the number of the first filtering units 310 may be equal to the number of the high frequency signals, that is, only one high frequency signal is allowed to pass through one first filtering unit 310. Specifically, when the high frequency signals include high frequency signals in three frequency bands B38, B40, and B41, three first filtering units 310 may be correspondingly disposed to filter out other stray waves, and the high frequency signals in the three frequency bands B38, B40, and B41 are respectively allowed to pass through.

The transmitting module 40 is configured with an antenna port ANT and a plurality of second transceiving ports (e.g., TRX0, TRX1, TRX 4.), wherein the antenna port ANT is connected to the first antenna ANT0, and the plurality of second transceiving ports are connected to the plurality of first filtering units 310 in a one-to-one correspondence. Specifically, the transmitting module 40 may receive a plurality of high-frequency signals output by the filtering module 30, and may select a high-frequency signal of any frequency band to be transmitted to the first antenna ANT0 through the antenna port ANT. In addition, the transmitting module 40 may further correspondingly transmit a plurality of high-frequency signals received by the antenna port ANT to the first transceiving port HB of the radio frequency MMPA device 10 after being filtered by the filtering module 30.

The first receiving module 50 is configured with a plurality of second receiving ports (e.g., HB0 IN0, HB0 IN1, HB1 IN0, and HB1 in1.), which are respectively connected to the plurality of first receiving ports and support receiving and amplifying the plurality of high-frequency signals. Specifically, the first transceiving port HB4 receives a plurality of high frequency signals from the antenna port ANT via the filtering module 30, and the received high frequency signals can be output to the second receiving port HB1 IN1 of the first receiving module 50 via the first switch unit 120 and the first receiving port HBRX 4. The first receiving module 50 may amplify the received high frequency signals and output the processed high frequency signals to the rf transceiver 20.

It should be noted that the settings of the first filtering unit 310, the transceiver port group, the first switch unit 120, the second transceiver port, and the second receiving port may be adaptively adjusted according to the number of the high-frequency signals.

The radio frequency system, which includes the radio frequency transceiver 20, the first antenna Ant0, the filtering module 30, the transmitting module 40, the first receiving module 50, and the radio frequency MMPA device 10 in any of the above embodiments, can support transmission and reception processing of a plurality of high frequency signals, and meanwhile, by providing the radio frequency MMPA device 10 in the radio frequency MMPA device 10, the occupied area of the radio frequency system and the cost of the radio frequency system can be further reduced, and meanwhile, the insertion loss of a transmission path of the high frequency signal can be reduced, so as to reduce transmission power consumption.

As shown in fig. 7, in one embodiment, the plurality of high frequency signals includes a first high frequency signal of a first system and a second high frequency signal of a second system. Specifically, the first system may be understood as a Time Division Duplex (TDD) system, where the high-frequency signals of the first system may include at least three frequency bands, i.e., B38, B40, and B41. The second format may be understood as a Frequency Division Duplex (FDD) format, where the high Frequency signals of the second format may at least include high Frequency signals in the B7 Frequency band. When the radio frequency system needs to support high frequency signals of the first system and the second system at the same time, the filtering module 30 further includes a first filtering circuit 320 and a plurality of first filtering units 310. The first filtering unit 310 is connected to the first transceiving port and the second transceiving port, and is configured to filter the first high-frequency signal. The first filter circuit 320 is connected to the first transceiving port, the second receiving port, and the second transceiving port, respectively, and is configured to perform transceiving processing and filtering processing on the second high-frequency signal at the same time. The first filtering unit 310 has the same configuration and function as the first filtering unit 310 in the previous embodiment, and is not described herein again. The first transceiver port and the second transceiver port of the first filter unit 310 and the first filter circuit 320 are different from each other.

Specifically, the first filtering circuit 320 includes a first duplexer 321 and a second filtering unit 322. Two first ends of the first duplexer 321 are respectively connected to the first transceiving port HB1 and the second receiving port HB1 IN0 IN a one-to-one correspondence manner, and a second end of the first duplexer 321 is connected to the second transceiving port TRX3 through the second filtering unit 322.

For convenience of description, in the embodiment of the present application, the high frequency signal includes a first high frequency signal in three frequency bands of B38, B40, and B41, and a second high frequency signal in a B7 frequency band as an example. The second filtering unit 322 of the first filtering circuit 320 allows only the second high frequency signal in the B7 band to pass through. Based on the radio frequency system shown in fig. 7, taking high frequency signals in B7 and B38 frequency bands as examples, the analysis of the transmission path and the reception path is performed:

transmission path of B7 frequency band signal:

the radio frequency transceiver 20 → the high frequency input port HB RFIN → the first power amplifier 110 → the SP4T switch (contact 1) → the SP4T switch (contact 5) → the SDPT #4 (contact 2) → the SDPT #4 (contact 1) → the first transceiver port HB → the first duplexer 321 → the second filter unit 322 → the second transceiver port TRX3 of the transmission module 40 → the antenna port ANT of the transmission module 40 → the first antenna ANT0.

Receiving path of B7 frequency band signal:

the first antenna Ant0 → the antenna port Ant of the transmission module 40 → the second transceiving port TRX3 of the transmission module 40 → the second filtering unit 322 → the first duplexer 321 → the second receiving port HB1 IN0 of the first receiving module 50 → the radio frequency transceiver 20.

Transmission path of B38 band signal:

the radio frequency transceiver 20 → the high frequency input port HB RFIN → the first power amplifier 110 → the SP4T switch (contact 1) → the SP4T switch (contact 3) → SDPT #2 (contact 2) → SDPT #4 (contact 1) → the first filtering unit 310 → the first transceiving port HB3 → the second transceiving port TRX1 of the transmission module 40 → the antenna port ANT of the transmission module 40 → the first antenna ANT0.

Receiving path of B38 frequency band signal:

the first antenna Ant0 → the antenna port Ant of the transmission module 40 → the second transceiving port TRX1 of the transmission module 40 → the first filtering unit 310 → the first transceiving port HB3 → SDPT #4 (contact 1) → SDPT #2 (contact 3) → the first receiving port HBRX3 → the second receiving port HB0 IN0 of the first receiving module 50 → the radio frequency transceiver 20.

In the radio frequency system in the above embodiment, by providing the radio frequency MMPA device 10, the occupied area of the radio frequency system and the cost of the radio frequency system can be further reduced, and meanwhile, the insertion loss of the transmission path of the high frequency signal can be reduced, so as to reduce the transmission power consumption.

As shown in fig. 8 and 9, in one embodiment, the first filter circuit 320 is built into the radio frequency MMPA device 10. The first filter circuit 320 includes a first duplexer 321 and a second filter unit 322, wherein two first ends of the first duplexer 321 are respectively connected to the first switch unit 120 (e.g., the first rf switch 121 or the first multichannel selection switch 123) and the first receiving port HBRX in a one-to-one correspondence, and a second end of the first duplexer 321 is connected to the first transceiving port HB through the second filter unit 322. The first duplexer 321 in the first filter circuit 320 may replace one second rf switch 122 (e.g., SPDT # 4) in the first switch unit 120 with respect to the rf MMPA device 10 shown in fig. 1, and the first filter circuit 320 may be directly disposed between the first multi-channel selection switch 123 and any set of transceiving ports with respect to the rf MMPA device 10 shown in fig. 2.

As shown in fig. 10, the rf system includes the rf MMPA device 10 shown in fig. 8, and the transmission path and the reception path are analyzed based on the rf system shown in fig. 10 by taking the high-frequency signal in the B7 frequency band as an example:

transmission path of B7 band signals:

the radio frequency transceiver 20 → the high frequency input port HB RFIN → the first power amplifier 110 → the SP4T switch (contact 1) → the SP4T switch (contact 5) → the first duplexer 321 → the second filtering unit 322 → the first transceiving port HB1 → the second transceiving port TRX3 of the transmission module 40 → the antenna port ANT of the transmission module 40 → the first antenna ANT0.

Receiving path of B7 frequency band signal:

the first antenna Ant0 → the antenna port Ant of the transmission module 40 → the second transceiving port TRX3 of the transmission module 40 → the first transceiving port HB1 → the second filtering unit 322 → the first duplexer 321 → the first receiving port HBRX1 → the second receiving port HB1 IN0 of the first receiving module 50 → the radio frequency transceiver 20.

In the LTE HB band, the B7 band is the only FDD system, and B7 is a band very important in the markets both at sea and abroad. As in the rf system of fig. 10, the first filter circuit 320 is built in the rf MMPA device 10, that is, integrated in the rf MMPA device 10, so as to further improve the communication performance in the B7 frequency band.

As shown in fig. 11, the rf system includes the rf MMPA device 10 shown in fig. 9, and performs analysis of the transmission path and the reception path based on the rf system shown in fig. 11 by taking the high-frequency signal in the B7 frequency band as an example:

transmission path of B7 frequency band signal:

the radio frequency transceiver 20 → the high frequency input port HB RFIN → the first power amplifier 110 → the 4P5T switch (contact 3) → the 4P5T switch (contact 9) → the first duplexer 321 → the second filtering unit 322 → the second transceiving port TRX3 of the transmission module 40 → the antenna port ANT of the transmission module 40 → the first antenna ANT0.

Reception path of B7 band signal:

As shown in fig. 11, the first filter circuit 320 of the radio frequency system is built in the radio frequency MMPA device 10, that is, integrated in the radio frequency MMPA device 10, so as to further improve the communication performance of the B7 frequency band, and meanwhile, compared with the radio frequency system shown in fig. 10, the first radio frequency switch 121 and the plurality of second radio frequency switches 122 may be integrated into one first multi-channel selection switch 123, so as to further reduce the cost and reduce the occupied area of the radio frequency MMPA device 10, and the saved area may be used for improving the performance of other modules, and in addition, the control logic of the integrated first multi-channel selection switch is simpler.

It should be noted that, in the radio frequency systems shown in fig. 10 and 11, the transceiving path of the first high frequency signal is the same as that of the radio frequency system shown in fig. 7, and is not described herein again.

As shown in fig. 12 and 13, in one embodiment, the radio frequency MMPA device 10 with the first filter circuit 320 built therein may further include the first transmitting circuit 130 in the above embodiments. When the rf MMPA device 10 includes the first transmitting circuit 130, the filtering module 30 in the rf system further includes a plurality of second filtering circuits 330 and a plurality of third filtering circuits 340. Meanwhile, the first receiving module 50 may also support a receiving process of a plurality of high frequency signals, a plurality of intermediate frequency signals, and a plurality of low frequency signals. Specifically, the first receiving module 50 may be an External Low Noise Amplifier (ela).

The second filter circuit 330 is connected to the intermediate frequency transmitting port MB, the second transceiving port, and the second receiving port, respectively, and the second filter circuit 330 is configured to implement simultaneous transceiving processing and filtering processing on the intermediate frequency signal. Specifically, the second filter circuit 330 includes: the second duplexer 331 and the third filtering unit 332 are included, wherein a first end of the second duplexer 331 is connected to the if transmitting port MB, another first end of the second duplexer 331 is connected to the second receiving port, and a second end of the second duplexer 331 is connected to the second transceiving port through the third filtering unit 332. The number of the second filter circuits 330 is equal to the number of the intermediate frequency signals capable of supporting transceiving control by the radio frequency system. For example, if the if signal includes five signals B1, B2, B3, B34, and B39, five second filtering circuits 330 may be correspondingly disposed to support the duplex and filtering processes for different if signals.

The third filter circuit 340 is connected to the low frequency transmitting port LB, the second transceiving port, and the second receiving port, respectively, and the third filter circuit 340 is configured to perform simultaneous transceiving processing and filtering processing on the low frequency signal, where the first transceiving port HB, the second transceiving port, and the second receiving port, which are connected to the first filter unit 310, the second filter circuit 330, and the third filter circuit 340, are different. Specifically, the third filter circuit 340 includes: the duplexer comprises a third duplexer 341 and a fourth filtering unit 342, wherein a first end of the third duplexer 341 is connected to the low-frequency transmitting port LB, another first end of the third duplexer 341 is connected to the second receiving port, and a second end of the third duplexer 341 is connected to the second transceiving port via the fourth filtering unit 342. The number of the third filter circuits 340 is equal to the number of the intermediate frequency signals capable of supporting transceiving control by the radio frequency system. Illustratively, if the intermediate frequency signal includes three signals B5, B8, and B28, three third filtering circuits 340 may be correspondingly disposed to support the duplex and filtering processing of different low frequency signals.

It should be noted that the radio frequency MMPA device 10 in the radio frequency system shown in fig. 12 and 13 may also be replaced with the radio frequency MMPA device 10 in fig. 4 and 5. When the rf MMPA device 10 shown in fig. 4 and 5 is replaced, the first filter circuit 320 is external to the rf MMPA device 10.

The rf system shown in fig. 12 and 13 can support not only the transceiving process of a plurality of high frequency signals, but also the transceiving process of a plurality of intermediate frequency signals and a plurality of low frequency signals, and in addition, by providing the rf MMPA device 10, the occupied area of the rf system and the cost of the rf system can be further reduced, and the insertion loss of the transmission path of the high frequency signal can be reduced to reduce the transmission power consumption.

In one embodiment, when the radio frequency system includes at least one of the first filtering unit 310, the second filtering unit 322, the third filtering unit 332, and the fourth filtering unit 342, each of the filtering units included in the radio frequency system may be built in the transmitting module 40. That is, the first filtering unit 310, the second filtering unit 322, the third filtering unit 332, and the fourth filtering unit 342 in any of the above embodiments may be built in the transmitting module 40.

Further, the second filtering unit 322 may be built in the radio frequency MMPA device 10, or may be built in the transmitting module 40. In the embodiment of the present application, the position where the second filtering unit 322 is disposed is not further limited, and the second filtering unit may be externally disposed with the radio frequency MMPA device 10 and the transmitting module 40, or internally disposed with the radio frequency MMPA device 10 or the transmitting module 40.

In this embodiment, each filtering unit is built in the transmitting module 40, which can further reduce the area occupied by the radio frequency system, for example, the area of 80mm ^2 can be reduced, thereby achieving the purpose of improving the device integration level and providing space for the performance optimization of the peripheral device. Meanwhile, the cost can be reduced, the insertion loss is reduced, the problem of impedance mismatch of the input end and the output end is solved, and the output power and the sensitivity index of the radio frequency system are effectively improved.

As shown in fig. 14, in one embodiment, the rf system may be configured to support transceiving processing of a plurality of high frequency signals, a plurality of intermediate frequency signals, and a plurality of low frequency signals. The rf system includes a first filtering unit 310, a second filtering unit 322, a third filtering unit 332, and a fourth filtering unit 342, all of which are built in the transmitting module 40. In particular, the transmit module 40 may include a second multi-channel selection switch 410. The second multi-channel selection switch 410 includes a plurality of first terminals and a second terminal, each of the first terminals is respectively connected to at least one of the first filtering unit 310, the second filtering unit 322, the third filtering unit 332, and the fourth filtering unit 342, and the second terminal of the second multi-channel selection switch 410 is connected to the antenna port ANT. Specifically, the second multi-channel selection switch may be a single-pole multi-throw switch, for example, the second multi-channel selection switch 410 may be an SP14T switch.

Based on the rf system shown in fig. 14, taking the low frequency signal of B28 band as an example, the analysis of the transmission path and the reception path is performed:

transmission path of B28 frequency band signal:

the radio frequency transceiver 20 → the first low frequency input port LB RFIN → the single pole double throw switch (SPDT # 6) → the third power amplifier 133 → the fourth radio frequency switch 134 → the low frequency output port LB3 → the third duplexer 341 → the second transceiving port TRX9 of the transmission module 40 → the fourth filtering unit 342 → the SP14T switch (contact 10) → the SP14T switch (contact 15) → the antenna port Ant → the first antenna Ant0.

Reception path of B28 band signal:

the first antenna Ant0 → the antenna port Ant of the transmission module 40 → the SP14T switch (contact 15) → the SP14T switch (contact 10) → the fourth filtering unit 342 → the second transceiving port TRX9 → the third duplexer 341 → the second receiving port LB0 IN0 of the first receiving module 50 → the radio frequency transceiver 20.

In the rf system in this embodiment of the application, the first filtering unit 310, the second filtering unit 322, the third filtering unit 332, and the fourth filtering unit 342 may be integrated in the transmitting module 40, which may provide an integration level of the rf system, reduce an occupied area of the rf system, and simultaneously reduce an insertion loss, eliminate an impedance mismatch problem at an input end and an output end, and then may effectively improve output power and sensitivity index of a device port, and further may improve communication performance of the rf system. Specific indexes are shown in table 3:

TABLE 3 optimal values for the respective built-in filter units

Frequency band	Insert intoLoss optimum value (dB)	Optimized value of impedance mismatch (dB)
			LB	0.1	0.2
MB	0.2	0.3
			HB	0.3	0.4

By combining the data in table 3, taking the first high frequency signal in the B41 frequency band as an example, and combining the

Sensitivity calculation formulas

1 and 2, it can be found that the Sensitivity of the radio frequency system shown in fig. 14 is improved by 0.7dB compared with the Sensitivity of the radio frequency system externally provided with each filtering unit. The sensitivity refers to the minimum input signal level which can be received by the receiver under the condition that the receiver meets a certain bit error rate performance. The sensitivity can be calculated by a theoretical formula, and is specifically shown in formula 1:

sensitivity = -174+10lgBW + NF (formula 1)

Wherein, BW refers to the bandwidth of the working frequency band of the receiver, and the unit is Hz; NF refers to the noise figure of the receiver in dB. By acquiring the BW and NF data, the sensitivity performance of the receiver can be theoretically calculated.

In addition, since the receiver is composed of a plurality of cascaded devices, the calculation formula of the cascaded noise figure is shown in formula 2:

NF = N1+ (N2-1)/G1 + (N3-1)/G1G 2+ (N4-1)/ G1G 2G 3+ \ 8230; (formula 2)

In the formula, N1 to N4 represent the noise coefficients of the first stage to the fourth stage, respectively, and G1 to G3 represent the gains of the first stage to the third stage, respectively, so that the final cascade noise of the whole receiving link can be calculated by formula 2. Meanwhile, the cascade noise coefficient is mainly determined by N1, N2 and G1, and particularly, N1 is directly added to the noise coefficient of the whole cascade; therefore, reducing N1 is the most effective means to reduce NF of the whole machine.

As shown in fig. 15, in one embodiment, the rf system may support transceiving processes for a plurality of high frequency signals, a plurality of intermediate frequency signals, and a plurality of low frequency signals. The second multi-channel selection switch 410 in the transmitting module 40 includes a plurality of first terminals and a second terminal, each of the first terminals is respectively connected to at least one of the first filtering unit 310, the second filtering unit 322, the third filtering unit 332 and the fourth filtering unit 342, and the second terminal of the second multi-channel selection switch 410 is connected to the antenna port ANT. When the two frequency bands have no interference with each other, the two filtering units can be integrated into a Double-channel surface acoustic wave Filter Double Saw Filter.

Specifically, the first filtering unit 310 and the third filtering unit 332 are connected to the same first end of the second multi-channel selection switch 410, and the two third filtering units 332 may also be connected to the same first end of the second multi-channel selection switch 410. The first Filter unit 310 and the third Filter unit 332 connected to the same first end may be understood as a Double Saw Filter, and the two third Filter units 332 connected to the same first end may also be understood as a Double Saw Filter. Illustratively, the third filtering unit 332 for filtering and outputting B39 and the first filtering unit 310 for filtering and outputting B41 may be integrated as a two-channel surface acoustic wave filter; the third filtering unit 332 for filtering and outputting B1 and the third filtering unit 322 for filtering and outputting B3 may be integrated as a two-channel surface acoustic wave filter.

In the radio frequency system provided in this embodiment, by integrating the two filter units built in the transmitting module 40 into the two-channel surface filter, compared to the radio frequency system shown in fig. 14, the number of terminals of the second multi-channel selection switch 410 may be correspondingly reduced, for example, two first ends may be correspondingly reduced, the number of second transceiving ports in the transmitting module 40 may also be correspondingly reduced, and the integration level of the radio frequency system may be further improved.

As shown in fig. 16, in one embodiment, the rf system may support transceiving processing of multiple high frequency signals, multiple intermediate frequency signals, and multiple low frequency signals. When the three frequency bands have no interference, the three filtering units can be integrated into a double-channel surface acoustic wave Filter Triple Saw Filter. Specifically, the first filtering unit 310 and the two third filtering units 332 are connected to the same first end, and the two third filtering units 332 may also be connected to the same first end. The first filtering unit 310 and the two third filtering units 332 connected to the same first end may be understood as a Triple Saw Filter, and the two third filtering units 332 connected to the same first end may be understood as a dual-channel Saw Filter. Illustratively, two third filtering units 332 for filtering and outputting B34, B39 may be integrated into a two-channel surface acoustic wave filter; the two third filtering units 332 for filtering and outputting B1, B3, the first filtering unit 310 for filtering and outputting B41 may be integrated as a three-channel surface acoustic wave filter.

In the radio frequency system provided in this embodiment, by integrating the three filter units built in the transmitting module 40 into a three-channel surface acoustic wave filter, compared with the radio frequency system shown in fig. 15, the number of terminals of the second multi-channel selection switch 410 can be further reduced correspondingly, for example, one first terminal can be further reduced correspondingly, the number of second transceiving ports in the transmitting module 40 can also be reduced correspondingly, and the integration level of the radio frequency system can be further improved.

It should be noted that the transmitting module 40 in the rf system shown in fig. 14-16 can be combined with any of the rf MMPA devices 10 in the previous embodiments.

As shown IN fig. 17 and 18, IN one of the embodiments, the transmitting module 40 IN any of the above embodiments is further configured with first input ports 2G HB IN and 2G LB IN. Wherein, the transmitting module 40 in any of the above embodiments further includes: a second transmit circuit 420 and a third transmit circuit 430. The input terminal of the second transmitting circuit 420 is connected to the first input port 2G HB IN for receiving and amplifying the 2G high frequency signal, and the input terminal of the third transmitting circuit 430 is connected to the 2G LB IN for receiving and amplifying the 2G low frequency signal. Wherein, the 2G low-frequency signals can comprise GSM850 and GSM900 signals; the 2G high frequency signals may include GSM1800 and GSM1900 signals. Wherein, the transmission paths of the 2G GSM signal and the 4G TLE signal are independent respectively, but the receiving paths can be shared. The frequency band relationship between the 2G GSM signal and the 4G TLE signal is shown in Table 4.

TABLE 4 frequency band relation table of 2G GSM signal and 4G TLE signal

Frequency band	GSM	LTE
			824～849	GSM850	B5
880～915	GSM900	B8
			1710～1785	GSM1800	B3
1850～1910	GSM1900	B2

It should be noted that the frequency range of the low-frequency band signals of the GSM850 and GSM900 and the 4G LTE signals are overlapped, that is, they may be referred to as low-frequency band signals; the frequency range of the middle band signal of the GSM1800 and GSM1900 signals overlaps with that of the 4G LTE signals, that is, they can be referred to as middle band signals.

Further, the transmitting module 40 may further include a second switching unit 410. A plurality of first terminals of the second switch unit 410 are respectively connected to the plurality of second transceiving ports, the output terminal of the second transmitting circuit 420, and the output terminal of the third transmitting circuit 430 in a one-to-one correspondence manner, a second terminal of the second switch unit 410 is connected to the antenna port ANT, and the second switch unit 410 is configured to selectively turn on paths between the radio frequency MMPA device 10, the second transmitting circuit 420, and the third transmitting circuit 430 and the antenna port ANT. Specifically, the second switch unit 410 may be a single-pole multi-throw switch, for example, an SP16T switch, which can implement switching control of multiple 2G GSM signals and multiple 4G TLE signals.

Further, the second transmitting circuit 420 may include a fourth power amplifier 421 and a fifth filtering unit 422, and the third transmitting circuit 430 may include a fifth power amplifier 431 and a sixth filtering unit 432. An input terminal of the fourth power amplifier 421 may serve as an input terminal of the second transmitting circuit 420, and an output terminal of the fifth filtering unit 422 may serve as an output terminal of the second transmitting circuit 420; an input terminal of the fifth power amplifier 431 may serve as an input terminal of the third transmitting circuit 430, and an output terminal of the sixth filtering unit 432 may serve as an output terminal of the third transmitting circuit 430.

As shown in fig. 19, in one embodiment, the second switch unit 410 includes a fifth rf switch 411 and a sixth rf switch 412. A plurality of first terminals of the fifth rf switch 411 are respectively connected to a plurality of second transceiving ports in a one-to-one correspondence manner, three first terminals of the sixth rf switch 412 are respectively connected to a second terminal of the fifth rf switch 411, an output terminal of the second transmitting circuit 420, and an output terminal of the third transmitting circuit 430 in a one-to-one correspondence manner, and a second terminal of the sixth rf switch 412 is connected to an antenna port ANT. Specifically, the fifth rf switch 411 may be a single-pole multi-throw switch, and the sixth rf switch 412 may be an SP3T switch. For example, when the rf system can support transceiving processing of a plurality of rf signals in a low and medium frequency band, the fifth rf switch 411 may be an SP16T switch. It should be noted that the second multi-channel selection switch 410 in any of the above embodiments may be the fifth rf switch 411 of the second switch unit 410.

As shown in fig. 20, in one embodiment, the radio frequency system includes a nominal transmission module 40 as shown in fig. 19, and the analysis of the transmission path and the reception path is performed based on the radio frequency system of fig. 20 taking signals of GSM850 and GSM1800 frequency bands as an example:

receiving path of GSM1800 frequency band signal:

the radio frequency transceiver 20 → the first input port 2G HB IN → the fourth power amplifier 421 → the fifth filter unit 422 → the sixth radio frequency switch 412 → the antenna port ANT → the first antenna ANT0.

Receiving path of GSM1800 band signal (i.e., receiving path of B3 band signal):

the first antenna Ant0 → the antenna port Ant → the sixth radio frequency switch 412 → the fifth radio frequency switch 411 → the second transceiving port TRX6 → the third filtering unit 332 → the second duplexer 331 → the second receiving port MB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

Transmitting path of GSM850 frequency band signals:

the radio frequency transceiver 20 → the second input port 2G LB IN → the fifth power amplifier 431 → the sixth filtering unit 432 → the sixth radio frequency switch 412 → the antenna port ANT → the first antenna ANT0.

Reception path of GSM850 band signal (i.e., reception path of B5 band signal):

the first antenna Ant0 → the antenna port Ant → the sixth radio frequency switch 412 → the fifth radio frequency switch 411 → the second transceiving port TRX11 → the fourth filtering unit 342 → the third duplexer 341 → the second receiving port LB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

In the rf system shown in fig. 20, the transmission paths of the 2G low frequency signal and the 2G high frequency signal are switched only by the sixth rf switch 412 without passing through its SP16T switch, wherein the insertion loss values of the sixth rf switch 412 can be shown in table 5. Specifically, the theoretical output power of the GSM850 signal and the GSM1800 signal at the first antenna Ant0 is shown in table 6.

TABLE 5SP3T insertion loss values

Frequency range (MHz)	600～1000	1000～2200	2200～3000
				Loss value (dB)	0.35	0.4	0.5

TABLE 6 theoretical output power of GSM signal at antenna port

Frequency range (MHz)	GSM850	GSM1800
			Power (dBm)	33.65	31.1

In the above radio frequency system, when the second switch unit 410 in the transmitting module 40 includes the fifth radio frequency switch 411 and the sixth radio frequency switch 412, it may reduce the insertion loss of the transmitting path of the 2G low frequency signal and the 2G high frequency signal, and the output power of the corresponding signal at the first antenna Ant0 may meet the requirement of the operator.

As shown in fig. 21, the antenna port ANT of the transmitting module 40 includes a first antenna port ANT and a second antenna port 2G OUT, and the second switch unit 410 includes a seventh rf switch 413 and an eighth rf switch 414. A plurality of first ends of the seventh rf switch 413 are respectively connected to the plurality of second transceiving ports in a one-to-one correspondence, and a second end of the seventh rf switch 413 is connected to the first antenna port ANT; two first ends of the eighth rf switch 414 are respectively connected to the output end of the second transmitting circuit 420 and the output end of the third transmitting circuit 430 in a one-to-one correspondence, and a second end of the eighth rf switch 414 is connected to the second antenna port 2G OUT. Specifically, the seventh rf switch 413 may be the same as the fifth rf switch 411 in the previous embodiment, and may be an SP16T switch, and the eighth rf switch 414 may be an SPDT switch.

As shown in fig. 22, in one embodiment, when the transmitting module 40 is configured with a first antenna port ANT and a second antenna port 2G OUT, the radio frequency system further includes: a second antenna Ant1, a third antenna Ant2, a fourth antenna Ant3, a third switching unit 60 and a second receiving module 70. Two first ends of the third switching unit 60 are connected to the antenna port ANT and the second receiving module 70, respectively, and four second ends of the third switching unit 60 are connected to the first antenna ANT0, the second antenna ANT1, the third antenna ANT2, and the fourth antenna ANT3 in a one-to-one correspondence manner, where the second receiving module 70 is configured to implement amplification receiving processing on a low-frequency signal, an intermediate-frequency signal, and a high-frequency signal.

Based on the radio frequency system shown in fig. 22, taking signals of GSM850 and GSM1800 frequency bands as an example, the analysis of the transmission path and the reception path is performed:

transmitting path of GSM1800 frequency band signals:

the radio frequency transceiver 20 → the first input port 2G HB IN → the fourth power amplifier 421 → the fifth filter unit 422 → the eighth radio frequency switch 414 → the second antenna port 2G OUT → Path1 → the third switch unit 60 → Path4 → the first antenna Ant0.

Reception path of GSM1800 band signal (i.e., reception path of B3 band signal):

the first antenna Ant0 → Path4 → the third switch unit 60 → Path1 → the first antenna port Ant → the seventh radio frequency switch 413 → the second transceiving port TRX6 → the third filter unit 332 → the second duplexer 331 → the second receiving port MB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

Transmitting path of GSM850 frequency band signals:

the radio frequency transceiver 20 → the second input port 2G LB IN → the fifth power amplifier 431 → the sixth filtering unit 432 → the eighth radio frequency switch 414 → the second antenna port 2G OUT → Path2 → the third switching unit 60 → Path4 → the first antenna Ant0.

Receiving path of GSM850 band signal (i.e. receiving path of B5 band signal):

the first antenna Ant0 → Path4 → the third switching unit 60 → Path2 → the first antenna port Ant → the seventh radio frequency switch 413 → the second transceiving port TRX11 → the fourth filtering unit 342 → the third duplexer 341 → the second receiving port LB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

Based on the rf system shown in fig. 22, only the eighth rf switch 414 is disposed in the transmission path of the signals in GSM850 and GSM1800 bands, and only the seventh rf switch 413 is disposed in the reception path thereof, and at the same time, only the seventh rf switch 413 is disposed in the transmission path of the multiple high frequency signals, the multiple intermediate frequency signals, and the multiple low frequency signals (e.g., WCDMA signals, LTE signals, NR signals), so that the insertion loss of the transmission paths of the 2G low frequency signals and the 2G high frequency signals can be correspondingly reduced on the basis of not increasing the insertion loss of the transmission paths of the multiple high frequency signals, the multiple intermediate frequency signals, and the multiple low frequency signals, and the output power of the corresponding signal at the first antenna Ant0 can meet the needs of the operator; meanwhile, the 1T4R round-robin function among the four antennas in the independent networking mode can be supported.

As shown IN fig. 23, IN one embodiment, the transmitting module 40 is further configured with first input ports 2G HB IN and 2G LB IN, the antenna ports including a first antenna port ANT, a second antenna port 2G HB OUT and a third antenna port 2G LB OUT, wherein the transmitting module 40 includes a ninth radio frequency switch 415, a second transmitting circuit 420 and a third transmitting circuit 430. A plurality of first ends of the ninth rf switch 415 are respectively connected to the plurality of second transceiving ports in a one-to-one correspondence manner, and a second end of the ninth rf switch 415 is connected to the first antenna port ANT.

The input end of the second transmitting circuit 420 is connected with the first input port 2G HB IN, and the output end of the second transmitting circuit 420 is connected with the second antenna port 2G HB OUT, and is used for receiving and amplifying 2G high-frequency signals; the input terminal of the third transmitting circuit 430 is connected to the 2G LB IN, and the output terminal of the third transmitting circuit 430 is connected to the third antenna port 2G LB OUT, for receiving and amplifying the 2G low frequency signal.

It should be noted that the second transmitting circuit 420 and the third transmitting circuit 430 shown in fig. 23 are the same as the second transmitting circuit 420 and the third transmitting circuit 430 in the foregoing embodiment, and are not described herein again.

As shown in fig. 24, in one embodiment, the radio frequency system may include a transmit module 40 as shown in fig. 23. In contrast to the rf system as shown in fig. 22, the third switching unit 60 includes four first terminals and four second terminals. For example, the third switching unit 60 may be a 4P4T switch. Four first ends of the 4P4T switch are respectively connected to the first antenna port ANT, the second antenna port 2G HB OUT, the third antenna port 2G LB OUT, and the second receiving module 70, and four second ends of the fourth switch unit are respectively connected to the first antenna ANT0, the second antenna ANT1, the third antenna ANT2, and the fourth antenna ANT3 in a one-to-one correspondence manner.

Based on the radio frequency system shown in fig. 24, taking signals of GSM850 and GSM1800 frequency bands as an example, the transmission path analysis is performed:

transmitting path of GSM1800 frequency band signals:

the radio frequency transceiver 20 → the first input port 2G HB IN → the fourth power amplifier 421 → the fifth filter unit 422 → the second antenna port 2G HB OUT → Path2 → the third switch unit 60 → Path5 → the first antenna Ant0.

Receiving path of GSM1800 band signal (i.e., receiving path of B3 band signal):

the first antenna Ant0 → Path5 → the third switch unit 60 → Path1 → the first antenna port Ant → the ninth radio frequency switch 415 → the second transceiving port TRX6 → the third filter unit 332 → the second duplexer 331 → the second receiving port MB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

Transmitting path of GSM850 frequency band signals:

the radio frequency transceiver 20 → the second input port 2G LB IN → the fifth power amplifier 431 → the sixth filtering unit 432 → the third antenna port 2G LB OUT → Path3 → the third switching unit 60 → Path5 → the first antenna Ant0.

The first antenna Ant0 → Path5 → the third switching unit 60 → Path1 → the first antenna port Ant → the ninth radio frequency switch 415 → the second transceiving port TRX11 → the fourth filtering unit 342 → the third duplexer 341 → the second receiving port LB0 IN2 of the first receiving module 50 → the radio frequency transceiver 20.

Based on the rf system shown in fig. 24, compared to the rf system shown in fig. 22, the antenna ports ANT are respectively configured for the 2G high frequency signal and the 2G low frequency signal, that is, the rf switches for switching the 2G high frequency signal and the 2G low frequency signal are removed, so that the insertion loss of the transmission paths of the 2G high frequency signal and the 2G low frequency signal can be further reduced, and the output power of the antenna ANT0 can meet the requirement of the operator. Meanwhile, the rf system shown in fig. 24 may also support a 1T4R round-robin function between four antennas in the independent networking mode.

It should be noted that, in the transmitting module 40 shown in fig. 19, 21, and 23, at least one of the first filtering unit 310, the second filtering unit 322, the third filtering unit 332, and the fourth filtering unit 342 may also be integrated, which is not described herein again.

The embodiment of the application also provides communication equipment, wherein the communication equipment is provided with the radio frequency system in any one of the embodiments, and the radio frequency system is arranged on the communication equipment, so that the cost can be reduced, the integration level of devices can be improved, the area of a substrate occupied by each device in the radio frequency system can be reduced, the insertion loss of a 2G high-frequency signal and a 2G low-frequency signal transmission path can be reduced, and the communication performance of the communication equipment can be further improved.

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 MMPA device configured with a high frequency input port, an intermediate frequency input port, a low frequency input port for connection to a radio frequency transceiver, and a plurality of intermediate frequency transmit ports, a plurality of low frequency transmit ports, and a plurality of transceiver port sets for connection to an antenna, each of the transceiver port sets including a first receive port and a first transceiver port, the radio frequency MMPA device comprising:

a first switch unit, which is connected to an output end of the first power amplifier, a plurality of first transceiving ports, and a plurality of first receiving ports, respectively, and is configured to selectively turn on a transmitting path between the first power amplifier and any one of the first transceiving ports, and also to selectively turn on a receiving path between the first transceiving port and the first receiving port in any one of the transceiving port groups, so that the first transceiving port of the radio frequency MMPA device correspondingly receives a high frequency signal in a corresponding frequency band, and outputs the received high frequency signal through the receiving path and the first receiving port;

a second power amplifier having an input terminal connected to the intermediate frequency input port,

a first end of the third radio frequency switch is connected with an output end of the second power amplifier, and a plurality of second ends of the third radio frequency switch are respectively connected with a plurality of intermediate frequency transmitting ports in a one-to-one correspondence manner, and are used for conducting a radio frequency path between the second power amplifier and any one of the intermediate frequency transmitting ports so as to support selective transmission of a plurality of intermediate frequency signals;

a third power amplifier having an input connected to the low frequency input port,

and a first end of the fourth radio frequency switch is connected with the output end of the third power amplifier, and a plurality of second ends of the fourth radio frequency switch are respectively connected with a plurality of low-frequency transmitting ports in a one-to-one correspondence manner and are used for conducting a radio frequency path between the third power amplifier and any one of the low-frequency transmitting ports so as to support selective transmission of a plurality of low-frequency signals.

2. The rf MMPA device of claim 1, wherein the first switch unit includes a first rf switch and a plurality of second rf switches, wherein a first end of the first rf switch is connected to the output end of the first power amplifier, a plurality of second ends of the first rf switch are respectively connected to a first end of each of the second rf switches in a one-to-one correspondence manner, wherein a plurality of the second rf switches are respectively connected to a plurality of the transceiving port groups in a one-to-one correspondence manner, and wherein another first end and another second end of the second rf switch are respectively connected to a first receiving port and a first transceiving port in the same transceiving port group in a one-to-one correspondence manner.

3. The rf MMPA device of claim 1, wherein the first switch unit comprises a first multi-channel selection switch, wherein the first multi-channel selection switch comprises a plurality of first terminals and a plurality of second terminals, wherein one of the first terminals is connected to an output terminal of the first power amplifier, the remaining first terminals are respectively connected to the plurality of first receiving ports in a one-to-one correspondence, and the second terminals are respectively connected to the plurality of first transceiving ports in a one-to-one correspondence.

4. The radio frequency MMPA device of claim 1, wherein the third radio frequency switch and the fourth radio frequency switch are single-pole multi-throw switches, respectively.

5. The rf MMPA device of claim 1, further configured with two low frequency input ports, further comprising a single-pole double-throw switch, wherein two first ends of the single-pole double-throw switch are respectively connected to the two low frequency input ports in a one-to-one correspondence, and a second end of the single-pole double-throw switch is connected to an input of the third power amplifier.

6. A radio frequency system, comprising: a radio frequency transceiver, a first antenna, a filtering module, a transmitting module, a first receiving module and a radio frequency MMPA device, wherein,

the radio frequency MMPA device configured with a high frequency input port for connecting a radio frequency transceiver and a plurality of transceiver port groups for connecting an antenna, each transceiver port group including a first receive port and a first transceiver port, the radio frequency MMPA device comprising:

the first switch unit is respectively connected with the output end of the first power amplifier, the first transceiving ports and the first receiving ports, and is used for selectively conducting a transmitting path between the first power amplifier and any one of the first transceiving ports and selectively conducting a receiving path between the first transceiving port and the first receiving port in any one of the transceiving port groups;

7. The radio frequency system according to claim 6, wherein the first switch unit includes a first radio frequency switch and a plurality of second radio frequency switches, wherein a first end of the first radio frequency switch is connected to the output end of the first power amplifier, a plurality of second ends of the first radio frequency switch are respectively connected to a first end of each of the second radio frequency switches in a one-to-one correspondence manner, wherein a plurality of the second radio frequency switches are respectively connected to a plurality of the transceiving port groups in a one-to-one correspondence manner, and wherein another first end and another second end of the second radio frequency switch are respectively connected to a first receiving port and a first transceiving port in the same transceiving port group in a one-to-one correspondence manner.

8. The radio frequency system according to claim 6, wherein the first switch unit comprises a first multichannel selection switch, wherein the first multichannel selection switch comprises a plurality of first terminals and a plurality of second terminals, wherein one of the first terminals is connected to an output terminal of the first power amplifier, the remaining first terminals are respectively connected to the plurality of first receiving ports in a one-to-one correspondence manner, and the plurality of second terminals are respectively connected to the plurality of first transceiving ports in a one-to-one correspondence manner.

9. The RF system according to claim 6, wherein the plurality of high frequency signals include a first high frequency signal of a first standard and a second high frequency signal of a second standard, wherein the first filtering unit is respectively connected to the first transceiving port and the second transceiving port for filtering the first high frequency signal,

the filtering module further comprises a first filtering circuit, wherein the first filtering circuit is respectively connected with the first transceiving port, the second receiving port and the second transceiving port, and is configured to implement simultaneous transceiving processing and filtering processing on the second high-frequency signal, and the first filtering unit and the first filtering circuit are connected to different transceiving ports.

10. The rf system according to claim 9, wherein the first filter circuit includes a first duplexer and a second filter unit, wherein two first ends of the first duplexer are respectively connected to the first transceiving port and the second receiving port in a one-to-one correspondence, and a second end of the first duplexer is connected to the second transceiving port via the second filter unit.

11. The RF system according to claim 6, wherein the plurality of high frequency signals includes a first high frequency signal of a first standard and a second high frequency signal of a second standard, wherein the first filtering unit is connected to the first transceiving port and the second transceiving port respectively for filtering the first high frequency signal,

the filtering module further includes a first filtering circuit, where the first filtering circuit is built in the radio frequency MMPA device, and the first filtering circuit is connected to the first switch unit, the first transceiving port of any one group, and the first receiving port, respectively, and is configured to implement transceiving processing and filtering processing on the second high-frequency signal at the same time.

12. The rf system according to claim 11, wherein the first filter circuit comprises a first duplexer and a second filter unit, wherein two first ends of the first duplexer are respectively connected to the first switch unit and the first receiving port in a one-to-one correspondence, and a second end of the first duplexer is connected to the first receiving/transmitting port via the second filter unit.

13. The radio frequency system according to claim 11, wherein the first high frequency signal includes B3, B40, B41 frequency band signals, and the second high frequency signal includes B7 frequency band signals.

14. The radio frequency system of claim 6, wherein the radio frequency MMPA device is configured with an intermediate frequency input port for connecting a radio frequency transceiver, a low frequency input port, and a plurality of intermediate frequency transmit ports and a plurality of low frequency transmit ports for connecting an antenna, the radio frequency MMPA device further comprising:

the input end of the first transmitting circuit is respectively connected with the intermediate frequency input port and the low frequency input port, the output end of the first transmitting circuit is respectively correspondingly connected with the intermediate frequency transmitting ports and the low frequency transmitting ports, and the first transmitting circuit is used for supporting selective transmission of a plurality of intermediate frequency signals and selective transmission of a plurality of low frequency signals; wherein the content of the first and second substances,

the filtering module further comprises a plurality of second filtering circuits and a plurality of third filtering circuits; the second filter circuit is respectively connected with the intermediate frequency transmitting port, the second transceiving port and the second receiving port, and is used for realizing simultaneous transceiving processing and filtering processing of the intermediate frequency signal; the third filter circuit is respectively connected with the low-frequency transmitting port, the second transceiving port and the second receiving port, and is used for realizing simultaneous transceiving processing and filtering processing of low-frequency signals, wherein the first transceiving port, the second transceiving port and the second receiving port which are connected with the first filter unit, the second filter circuit and the third filter circuit are different.

15. The radio frequency system of claim 14, wherein the second filter circuit comprises: a second duplexer and a third filtering unit, wherein a first end of the second duplexer is connected to the intermediate frequency transmitting port, another first end of the second duplexer is connected to the second receiving port, and a second end of the second duplexer is connected to the second transceiving port through the third filtering unit;

the third filter circuit includes: third duplexer and fourth filtering unit, wherein, a first end of third duplexer with the low frequency transmission port is connected, another first end of third duplexer with the port is received to the second and is connected, the second end warp of third duplexer fourth filtering unit with the second receives and dispatches the port and connect.

16. The radio frequency system according to any of claims 6-15, wherein the transmitting module is further configured with a first input port and a second input port, wherein the transmitting module comprises:

the input end of the second transmitting circuit is connected with the first input port and is used for receiving and amplifying 2G high-frequency signals;

the input end of the third transmitting circuit is connected with the second input port and is used for receiving and amplifying 2G low-frequency signals;

and a plurality of first ends of the second switch unit are respectively connected with the plurality of second transceiving ports, the output end of the second transmitting circuit and the output end of the third transmitting circuit in a one-to-one correspondence manner, a second end of the second switch unit is connected with the antenna port, and the second switch unit is used for selectively conducting the paths among the radio frequency MMPA device, the second transmitting circuit and the antenna port.

17. The radio frequency system according to claim 16, wherein the second switching unit comprises:

a fifth RF switch, wherein a plurality of first terminals of the fifth RF switch are respectively connected with the plurality of second transceiving ports in a one-to-one correspondence manner,

and three first ends of the sixth radio frequency switch are respectively connected with the second end of the fifth radio frequency switch, the output end of the second transmitting circuit and the output end of the third transmitting circuit in a one-to-one correspondence manner, and the second end of the sixth radio frequency switch is connected with the antenna port.

18. The rf system of claim 16, wherein the antenna ports include a first antenna port and a second antenna port, and the second switch unit includes:

a plurality of first ends of the seventh radio frequency switch are respectively connected with the plurality of second transceiving ports in a one-to-one correspondence manner, and a second end of the seventh radio frequency switch is connected with the first antenna port;

and two first ends of the eighth radio frequency switch are respectively connected with the output end of the second transmitting circuit and the output end of the third transmitting circuit in a one-to-one correspondence manner, and a second end of the eighth radio frequency switch is connected with the second antenna port.

19. The radio frequency system of claim 18, further comprising: a second antenna, a third antenna, a fourth antenna, a third switching unit, and a second receiving module, wherein,

the three first ends of the third switch unit are respectively connected with the first antenna port, the second antenna port and the second receiving module, the four second ends of the third switch unit are respectively connected with the first antenna, the second antenna, the third antenna and the fourth antenna in a one-to-one correspondence manner, and the second receiving module is used for realizing the amplification receiving processing of low-frequency signals, intermediate-frequency signals and high-frequency signals.

20. The radio frequency system according to any of claims 6-15, wherein the transmit module is further configured with a first input port and a second input port, the antenna ports comprising a first antenna port, a second antenna port, and a third antenna port, wherein the transmit module comprises:

a plurality of first ends of the ninth radio frequency switch are respectively connected with the plurality of second transceiving ports in a one-to-one correspondence manner, and a second end of the ninth radio frequency switch is connected with the first antenna port;

the input end of the second transmitting circuit is connected with the first input port, and the output end of the second transmitting circuit is connected with the second antenna port and used for receiving and amplifying 2G high-frequency signals;

and the input end of the third transmitting circuit is connected with the second input port, and the output end of the third transmitting circuit is connected with the third antenna port and used for receiving and amplifying 2G low-frequency signals.

21. The radio frequency system of claim 20, further comprising: a second antenna, a third antenna, a fourth switch unit and a second receiving module, wherein,

four first ends of the fourth switch unit are respectively connected with the first antenna port, the second antenna port, the third antenna port and the second receiving module, four second ends of the fourth switch unit are respectively connected with the first antenna, the second antenna, the third antenna and the fourth antenna in a one-to-one correspondence manner, wherein the second receiving module is used for realizing the amplification receiving processing of low-frequency signals, intermediate-frequency signals and high-frequency signals.

22. The radio frequency system according to any of claims 6-15, wherein when the radio frequency system comprises at least one of a first filtering unit, a second filtering unit, a third filtering unit and a fourth filtering unit, each filtering unit is built into the transmitting module.

23. The rf system of claim 22, wherein the rf system supports transceiving processing for a plurality of high frequency signals, a plurality of intermediate frequency signals, and a plurality of low frequency signals, and wherein the transmitting module comprises: and the second multichannel selection switch comprises a plurality of first ends and a second end, each first end is respectively connected with at least one of the first filtering unit, the second filtering unit and the third filtering unit, and the second end of the second multichannel selection switch is connected with the antenna port.

24. The rf system according to claim 23, wherein a first terminal of the second multichannel selection switch is connected to the first filtering unit and the third filtering unit, respectively, and another first terminal of the second multichannel selection switch is connected to two of the second filtering units, respectively.

25. The rf system according to claim 23, wherein a first terminal of the second multichannel selecting switch is connected to the first filtering unit and the two third filtering units, respectively, and another first terminal of the second multichannel selecting switch is connected to the two second filtering units, respectively.

26. The radio frequency system of claim 22, wherein the transmit module is further configured with a first input port and a second input port, wherein the transmit module comprises:

and the input end of the third transmitting circuit is connected with the second input port and is used for receiving and amplifying the 2G low-frequency signal.

27. A communication device, characterized in that it comprises a radio frequency system according to any one of claims 6 to 26.