Radio frequency module, radio frequency system and electronic equipment

Abstract

The embodiment of the invention provides a radio frequency module. The radio frequency module comprises a power amplifier, a first low noise amplifier, m auxiliary ports and a first selection switch. The m auxiliary ports are used for being connected with m antennas respectively, and m is a positive integer larger than or equal to 1. The first selection switch comprises two P ports and n T ports, the two P ports are connected with the power amplifier and the first low noise amplifier, and the n T ports are at least connected with the m auxiliary ports respectively; the 2PnT switch is used for establishing connection among the power amplifier, the first low-noise amplifier and at least one auxiliary port, and n is a positive integer greater than or equal to 1. The invention also provides a radio frequency system and electronic equipment. According to the invention, the signal quality of the antenna under specific conditions can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a radio frequency module, a radio frequency system and an electronic device. Background Art

[0002] At present, with the popularization of 5G communication technology, people's communication experience is getting better and better. However, more and more antennas are needed, and as full screens gradually become mainstream, the clearance space left for antennas is getting smaller and smaller. Therefore, some antennas need to be set in remote locations, for example, far away from the motherboard of the electronic device. Therefore, these antennas need longer transmission lines to connect with the RF module set on the motherboard, resulting in larger insertion loss. Summary of the invention

[0003] The present application provides a radio frequency module, a radio frequency system and an electronic device to solve the above problems.

[0004] In a first aspect, a radio frequency module is provided, the radio frequency module comprising a power amplifier, a first low noise amplifier, m auxiliary ports and a first selection switch. The m auxiliary ports are used to be connected to m antennas respectively, wherein m is a positive integer greater than or equal to 1. The first selection switch comprises 2 P ports and n T ports, the 2 P ports are connected to the power amplifier and the first low noise amplifier, the n T ports are connected to at least the m auxiliary ports respectively, and the 2PnT switch is used to establish a connection between the power amplifier, the first low noise amplifier and at least one auxiliary port, wherein n is a positive integer greater than or equal to 1.

[0005] In a second aspect, a radio frequency system is also provided, the radio frequency system comprising a radio frequency transceiver and a radio frequency module. The radio frequency module comprises a power amplifier, a first low noise amplifier, m auxiliary ports and a first selection switch. The m auxiliary ports are used to be connected to m antennas respectively, wherein m is a positive integer greater than or equal to 1. The first selection switch comprises 2 P ports and n T ports, the 2 P ports are connected to the power amplifier and the first low noise amplifier, the n T ports are connected to at least the m auxiliary ports respectively, and the 2PnT switch is used to establish a connection between the power amplifier, the first low noise amplifier and at least one auxiliary port, wherein n is a positive integer greater than or equal to 1. The radio frequency transceiver is electrically connected to the antenna through the radio frequency module to realize the radio frequency transceiver function.

[0006] In a third aspect, an electronic device is also provided, the electronic device comprising a radio frequency system. The radio frequency system comprises a radio frequency transceiver and a radio frequency module. The radio frequency module comprises a power amplifier, a first low noise amplifier, m auxiliary ports and a first selection switch. The m auxiliary ports are used to be connected to m antennas respectively, wherein m is a positive integer greater than or equal to 1. The first selection switch comprises 2 P ports and n T ports, the 2 P ports are connected to the power amplifier and the first low noise amplifier, the n T ports are connected to at least the m auxiliary ports respectively, and the 2PnT switch is used to establish a connection between the power amplifier, the first low noise amplifier and at least one auxiliary port, wherein n is a positive integer greater than or equal to 1. The radio frequency transceiver is electrically connected to the antenna through the radio frequency module to realize the radio frequency transceiver function.

[0007] The RF module, RF system and electronic device of the present application, for some antennas with poor signal quality, such as m antennas far away from the RF module, respectively connect with the m antennas 2 by additionally setting up m auxiliary ports, and establish a connection between the power amplifier, the first low-noise amplifier and at least one auxiliary port through the first selection switch, so that the signal transmission channel of the m antennas can bypass the existing filters and channel selection switches, and avoid the loss caused by transmission through the filters and channel selection switches, which is beneficial to reduce losses and improve communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0009] Figure 1 A simple structural diagram of the radio frequency module in some embodiments of the present application.

[0010] Figure 2 Another simple structural diagram of the radio frequency module in some embodiments of the present application.

[0011] Figure 3 A further structural diagram of the radio frequency module in some embodiments of the present application.

[0012] Figure 4 This is another further structural schematic diagram of the radio frequency module in some embodiments of the present application.

[0013] Figure 5 This is yet another structural schematic diagram of the radio frequency module in some embodiments of the present application.

[0014] Figure 6This is a structural block diagram of a radio frequency system in some embodiments of the present application.

[0015] Figure 7 This is a structural block diagram of an electronic device in some embodiments of the present application.

[0016] Figure 8 It is a schematic plan view of an electronic device in some embodiments of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "thickness", "width", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying or indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "connection" in this application, unless otherwise specified, mainly refers to a physical structural connection, and may also include electrical connection, direct connection or indirect connection, etc., if specified. In the description of the embodiments of the present invention, the terms "first", "second", etc. are not specific, but are used to distinguish objects with the same name. If specified in the specification, the objects with the same name referred to by the terms "first", "second", etc. may be the same objects.

[0019] See also Figure 1 , is a simple structural diagram of a radio frequency module in some embodiments of the present application. Figure 1 As shown, the RF module 1 includes a power amplifier (PA, Power Amplifier) ​​11, a first low noise amplifier (LNA, Low Noise Amplifier) ​​12, m auxiliary ports 13 and a first selection switch 14. The m auxiliary ports 13 are used to connect to m antennas 2 respectively, where m is a positive integer greater than or equal to 1. The first selection switch 14 includes 2 P ports P11 and n T ports P12, the 2 P ports P11 are connected to the power amplifier 11 and the first low noise amplifier 12, the n T ports P12 are at least connected to the m auxiliary ports 13 respectively, and the 2PnT switch is used to establish a connection between the power amplifier, the first low noise amplifier and at least one auxiliary port, where n is a positive integer greater than or equal to 1.

[0020] Among them, in the existing RF module, generally after the power amplifier 11, in addition to connecting the selection switch to realize the selective connection between the power amplifier and the first low-noise amplifier, a filter is further connected, and a channel selection switch is also connected, and then the signal is connected to the corresponding antenna through the channel selection switch. When the signal is transmitted through the filter and the channel selection switch, it will cause loss, so when the signal quality of some antennas themselves is poor, the impact of this loss will become significant. In this application, for some antennas with poor signal quality, such as m antennas 2 far away from the RF module 1, m auxiliary ports 13 are additionally set to connect to the m antennas 2 respectively, and the connection between the power amplifier 11, the first low-noise amplifier 12 and at least one auxiliary port 13 is established through the first selection switch 14, so that the signal transmission channel of the m antennas 2 can bypass the existing filter and channel selection switch, and avoid the loss caused by transmission through the filter and the channel selection switch, which is conducive to reducing losses and improving communication quality.

[0021] In some embodiments, the m antennas 2 are at least part of the antennas connected to the RF module 1.

[0022] In some embodiments, the m auxiliary ports 13 are respectively connected to the m antennas 2, which may be directly connected via a conductive line, such as a coaxial line. That is, the m auxiliary ports 13 and the m antennas 2 may only be connected via a conductive line, which is equivalent to a direct connection.

[0023] The P port and T port in the first selection switch and other switches in the present application do not specifically refer to a certain type of port, but refer to ports that are opposite to each other and can be connected or disconnected in the switch.

[0024] In some embodiments, Figure 1 As shown, the power amplifier 11 includes an input port 111 and an output port 112, and the first low noise amplifier 12 includes an input port 121 and an output port 122, wherein the input port 111 of the power amplifier 11 is used to connect to a first signal transmitting port TX of a radio frequency transceiver 3, and the output port 122 of the first low noise amplifier 12 is used to be electrically connected to a signal receiving port Rx of the radio frequency transceiver 3, and the two P ports P11 of the first selection switch 14 are respectively connected to the output port 112 of the power amplifier 11 and the input port 121 of the first low noise amplifier 12.

[0025] That is, in some embodiments, the input port 111 of the power amplifier 11 is used to connect to the first signal transmission port TX of the RF transceiver 3, and the RF signal transmitted by the first signal transmission port TX of the RF transceiver 3 is power amplified to improve the transmission performance. The output port 122 of the first low noise amplifier 12 is used to be electrically connected to the signal receiving port Rx of the RF transceiver 3, and the first low noise amplifier 12 amplifies the power of the received RF signal before transmitting it to the RF transceiver 3, thereby improving the receiving performance. The two P ports P11 of the first selection switch 14 are specifically connected to the output port 112 of the power amplifier 11 and the input port 121 of the first low noise amplifier 12, respectively.

[0026] In some embodiments, the RF module 1 of the present application may refer to a module connected between the RF transceiver 3 and multiple antennas 2 for realizing the functions of transmitting and receiving RF signals.

[0027] In some embodiments, the connection established by the first selection switch 14 includes: a connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13 , or a connection between the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13 .

[0028] Among them, in the present application, the connection established by the first selection switch 14 includes: the connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13, or the connection between the input port 121 of the first low-noise amplifier 12 and the at least one auxiliary port 13, which may refer to: the first selection switch 14 at least satisfies the establishment of the connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13, and the connection between the input port 121 of the first low-noise amplifier 12 and the at least one auxiliary port 13, and at the same time, it can be selected to establish the connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13, or to establish the connection between the input port 121 of the first low-noise amplifier 12 and the at least one auxiliary port 13.

[0029] In some embodiments, the first selection switch 14 is a fully connected switch or a simplified connection switch. The fully connected switch refers to each T port that can be connected to all P ports, that is, each port is a fully connected port. The simplified connection switch refers to a switch including one or more non-fully connected ports, and the non-fully connected port refers to a port that is not connected to all opposite ports, such as in a 4P4T switch, the first T port can be fully connected to 4 P ports, and each of the second, third, and fourth T ports can only be connected to one, two, or three P ports. The fully connected port in this application refers to the port having the ability to connect to all opposite ports, that is, it can be connected to all opposite ports, and the specific connection method can be switched as needed, for example, it can be selected to connect to all opposite ports, or it can be connected to only one or part of the opposite ports at the same time, and the connection between different opposite ports can be switched as needed. The non-connected port specifically refers to a port that only has the ability to connect to some opposite ports.

[0030] The first selection switch 14 only needs to meet the above connection establishment requirements, and is not limited to a full connection switch or a simplified connection switch.

[0031] In some embodiments, when the first selection switch 14 establishes a connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13, the transmission function of the at least one antenna 2 connected to the at least one auxiliary port 13 is realized, and when the first selection switch 14 establishes a connection between the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13, the receiving function of the at least one antenna 2 connected to the at least one auxiliary port 13 is realized.

[0032] Therefore, the radio frequency module 1 of the present application can realize the transceiver functions of m antennas through the m auxiliary ports 13 and the first selection switch 14 .

[0033] in, Figure 1 In the figure, m is taken as 1 for illustration, that is, the m auxiliary ports 13 are taken as one, and at least one antenna 2 connected to the m auxiliary ports 13 is taken as one for illustration. Figure 1 In the figure, the n T ports P12 included in the first selection switch 14 are also illustrated by taking one as an example.

[0034] See also Figure 2 , is another simple structural diagram of the radio frequency module in some embodiments of the present application. Among them, Figure 2 and Figure 1 The difference is that m and n are illustrated by taking two examples.

[0035] That is, in some embodiments, Figure 2 As shown, the first selection switch 14 includes two P ports and two T ports, the m auxiliary ports 13 include two auxiliary ports 13 , and the two auxiliary ports 13 are connected to two antennas 2 respectively.

[0036] In some embodiments, the connection between the output port 112 of the power amplifier 11 and the at least one auxiliary port 13, or the connection between the input port 121 of the first low noise amplifier 12 and at least one auxiliary port 13, may include: the first selection switch 14 may establish a connection between the output port 112 of the power amplifier 11 and one of the auxiliary ports 13 and establish a connection between the input port 121 of the first low noise amplifier 12 and another auxiliary port 13, thereby realizing the transmission function of the antenna connected to one of the auxiliary ports 13 and the receiving function of the antenna connected to the other auxiliary port 13; or, the first selection switch 14 may establish a connection between the output port 112 of the power amplifier 11 and two auxiliary ports 13, while realizing the transmission function of the two antennas 2 connected to the two auxiliary ports 13; or, the first selection switch 14 may establish a connection between the input port 121 of the first low noise amplifier 12 and two auxiliary ports 13, thereby realizing the receiving function of the two antennas 2 connected to the two auxiliary ports 13.

[0037] in, Figure 2 and Figure 1 The difference is that the number of the m auxiliary ports and the number of the n T ports are both two. For other structures, see Figure 1 The relevant introduction will not be repeated here.

[0038] See also Figure 3 , which is a further structural diagram of the RF module 1 in some embodiments of the present application.

[0039] like Figure 3As shown, in some embodiments, the RF module 1 also includes a first filter 15, and the n T ports of the first selection switch 14 are respectively connected to the at least one auxiliary port 13 and the first filter 15, and the first filter 15 is also used to be electrically connected to at least one antenna 2, and the n is a positive integer greater than or equal to 2, that is, the first selection switch 14 includes 2 or more T ports, and the connection established by the first selection switch 14 includes: the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13, The first filter 15 is connected, or the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12 is connected to the first filter 15 and the at least one auxiliary port 13.

[0040] That is, in some embodiments, the RF module 1 further includes a first filter 15, and the connection established by the first selection switch 14 includes a connection between the output port 112 of the power amplifier 11 and at least one auxiliary port 13 and a connection between the input port 121 of the first low noise amplifier 12 and the first filter 15, or a connection between the output port 112 of the power amplifier 11 and the first filter 15 and a connection between the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13. The first filter 15 is also used to be electrically connected to at least one antenna 2, wherein the at least one antenna 2 electrically connected to the first filter 15 is different from the antenna 2 connected to the auxiliary port 13, that is, the antenna 2 connected to the RF module 1 includes, in addition to the m antennas 2 connected to the m auxiliary ports 13, an antenna 2 electrically connected to the first filter 15 may also be included.

[0041] Among them, when the first selection switch 14 establishes the connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, and the at least one auxiliary port 13 and the first filter 15 respectively, the transmission function of the at least one antenna 2 connected to the at least one auxiliary port 13 and the receiving function of the antenna 2 electrically connected to the first filter 15 can be realized, and when the first selection switch 14 establishes the connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, and the first filter 15 and the at least one auxiliary port 13 respectively, the receiving function of the at least one antenna 2 connected to the at least one auxiliary port 13 and the transmitting function of the antenna 2 electrically connected to the first filter 15 can be realized.

[0042] Among them, filtering by the first filter 15 can effectively remove noise, and is suitable for antennas with short transmission lines and high signal quality requirements.

[0043] In some embodiments, the connection established by the first selection switch 14 includes: the connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13, and the first filter 15, respectively; or, the connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12 and the first filter 15, and the at least one auxiliary port 13, respectively, may refer to: the first selection switch 14 at least satisfies the establishment of the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12 and the at least one auxiliary port 13, respectively, The connection between the first filter 15, and the connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, the first filter 15, and the at least one auxiliary port 13, respectively, and at the same time, it is possible to choose to establish a connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, at least one auxiliary port 13, and the first filter 15, respectively, or to establish a connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, the first filter 15, and the at least one auxiliary port 13, respectively.

[0044] In some embodiments, Figure 3 As shown, the RF module 1 also includes a second selection switch 16, which includes n1 P ports P21 and n2 T ports P22, where n1 and n2 are positive integers greater than or equal to 1, and the first filter 15 is connected to one of the target T ports P22 in the second selection switch 16, and the n1 P ports P21 of the second selection switch 16 are used to connect to n1 antennas 2 respectively, and the second selection switch 16 is at least used to establish a connection between the target T port P22 and at least one of the target P ports of the second selection switch 16.

[0045] That is, in some embodiments, the at least one antenna 2 electrically connected to the first filter 15 may be n1 antennas 2 respectively connected through n1 P ports P21 of the second selection switch 16. Specifically, the first filter 15 may be connected between a T port P12 of the first selection switch 14 and a target T port P22 of the second selection switch 16, and is used to filter the RF signal to remove the noise of the RF signal.

[0046] In some embodiments, the first filter 15 may be a bandpass filter, which is used to allow the RF signals of the frequency band supported by the RF module 1 to pass through, and prevent the RF signals of other frequency bands outside the frequency band supported by the RF module 1 from passing through, that is, filtering out the RF signals of other frequency bands, and the noise refers to the RF signals of other frequency bands. For example, the frequency band supported by the RF module 1 may be the N77 frequency band, with a frequency range of 3.3 GHz to 4.2 GHz. The RF module allows the RF signals with a frequency range of 3.3 GHz to 4.2 GHz to pass through, and filters out the RF signals outside the range of 3.3 GHz to 4.2 GHz. Obviously, the frequency band supported by the RF module 1 may also be any other one or more frequency bands, for example, it may also include medium and high frequency bands such as B41 and B3, and so on.

[0047] In some embodiments, at least the target T-port P22 is a fully connected port, and is fully connected to the n1 P-ports P21, that is, the T-port P22 can be connected to all the n1 P-ports P21 at the same time, or can switch the connection with the n1 P-ports P21 in turn. Thus, the electrical connection between the first filter 15 and at least one antenna 2 is achieved.

[0048] Among them, when the second selection switch 16 establishes a connection between the target T port P22 and at least one target P port P21 of the second selection switch 16, when the first selection switch 14 establishes a connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, the at least one auxiliary port 13, and the first filter 15 respectively, the transmission function of the at least one antenna 2 connected to the at least one auxiliary port 13 is realized, and the receiving function of the at least one antenna 2 connected to the at least one target P port P21 is realized, and when the first selection switch 14 establishes a connection between the output port 112 of the power amplifier 11, the input port 121 of the first low noise amplifier 12, the first filter 15, and the at least one auxiliary port 13 respectively, the receiving function of the at least one antenna 2 connected to the at least one auxiliary port 13 is realized, and the transmission function of the at least one antenna 2 connected to the at least one target P port P21 is realized.

[0049] Among them, in the present application, the power amplifier 11, the first low-noise amplifier 12, the first selection switch 14 and the m auxiliary ports 13 can be regarded as a signal transceiver channel for connecting to m antennas 2, for example, can be called a first signal transceiver channel, and the power amplifier 11, the first low-noise amplifier 12, the first selection switch 14, the first filter 15 and the second selection switch 16 can be regarded as another signal transceiver channel for connecting to other antennas such as n1 antennas 2, for example, can be called a second signal transceiver channel.

[0050] Thus, the RF module 1 in the present application, through the above-mentioned structure, can be connected to the corresponding antenna 2 as needed by setting multiple transceiver channels. For example, for some antennas 2 that are far away from the RF module 1, due to the large transmission loss, when passing through the filter and the channel selection switch will cause the signal to be worse, they can be connected through the auxiliary port 13, that is, the first transceiver channel is selected. For some antennas that are close to the RF module 1 and have high signal quality requirements, such as the main antenna for a certain frequency band, they can be connected through the n1 P ports P21 of the second selection switch 16, that is, the second transceiver channel is selected, so that filtering can be performed through the first filter 15, which can effectively remove noise and improve signal quality.

[0051] In some embodiments, the RF module 1 is arranged close to the n1 antennas 2 connected to the n1 P ports P21 of the second selection switch 16 .

[0052] In some embodiments, the distance between the RF module 1 and the m antennas 2 connected to the m auxiliary ports 13 is greater than the distance between the RF module 1 and the n1 antennas 2 connected to the n1 P ports P21 of the second selection switch 16 .

[0053] As mentioned above, the existing signal transceiver path is generally after the power amplifier. In addition to connecting the selection switch to realize the selective connection between the power amplifier and the first low noise amplifier, it is also necessary to further connect the filter, such as the first filter 15, and the channel selection switch, such as the second selection switch 16, and then connect to the corresponding antenna through the channel selection switch. When the signal is transmitted through the filter and the channel selection switch, it will cause loss. Therefore, when the signal quality of some antennas is poor, for example, some antennas are far away from the RF module 1 and the transmission loss is large, the influence of the loss caused by the filter and the channel selection switch will become significant. Therefore, this part of the antenna is connected through the auxiliary port 13 of the present application, which can effectively reduce the loss and improve the signal quality. For another part of the antenna, for example, the distance to the RF module 1 is close, and after filtering out the noise through the filter, the signal quality will be better. Therefore, this other part of the antenna can still be connected to the channel selection switch, such as the second selection switch 16.

[0054] Therefore, in the RF module 1 in the present application, the m antennas 2 connected through the m auxiliary ports 13 of the RF module 1 and the n1 antenna 2 connected through the n1 P ports P21 of the second selection switch 16 of the RF module 1 can make the signal quality of each antenna high.

[0055] In some embodiments, the sum of m and n1 is greater than or equal to 4, and the antenna 2 connected to the RF module 1 through at least one auxiliary port 13 and at least some of the n1 antennas 2 support SRS (Sounding Reference Signal) switching antenna transmission function.

[0056] That is, in some embodiments, some of the m antennas 2 connected to the m auxiliary ports 13 and at least some of the n1 antennas 2 can be used as four antennas for implementing the SRS switching antenna transmission function. That is, among the four antennas for implementing the SRS switching antenna transmission function, some are antennas among the m antennas 2 connected to the m auxiliary ports 13, and some are antennas among the n1 antennas 2 connected to the n1 P ports P21 of the second selection switch 16.

[0057] At present, the SRS switching antenna rotation function of the mobile phone, that is, the SRS switching 4-antenna transmission function, is a mandatory option in the "China Mobile 5G Large-Scale Trial Technology White Paper_Terminal" of China Mobile Communications Group CMCC, and is optional in the Third Generation Partnership Project 3GPP. Its main purpose is for the base station to measure the uplink signal of the mobile phone's 4 antennas, and then confirm the quality and parameters of the 4 channels, and then optimize the downlink beamforming of the multi-input and multi-output Massive MIMO antenna array for the 4 channels according to the channel reciprocity, so as to finally achieve the best data transmission performance for the downlink 4x4 MIMO.

[0058] Among them, the SRS switching antenna rotation function is generally implemented by using 4 antennas to take turns as transmitting antennas. In the present application, at least some of the m antennas 2 connected by the m auxiliary ports 13 and at least some of the n1 antennas 2 are used as 4 antennas for the SRS switching antenna rotation function. As mentioned above, the m antennas 2 connected by the m auxiliary ports 13 of the RF module 1 and the n1 antenna 2 connected by the n1 P ports P21 of the second selection switch 16 of the RF module 1 can make the signal quality of each antenna higher. Therefore, compared with the prior art that uses 4 antennas out of the n1 antennas 2 connected by the n1 P ports P21 of the second selection switch 16 as 4 antennas for the SRS switching antenna rotation function, the present application can effectively ensure that the signal quality of all 4 antennas is good.

[0059] In some embodiments, while realizing the SRS function, the insertion loss / loss can be reduced by at least 1.5-2.5db (filter + channel selection switch), which greatly improves the power of SRS, avoids low SRS power, and improves communication quality.

[0060] In some embodiments, the RF module 1 can also perform autonomous transmission switching through at least some of the m antennas 2 connected to the m auxiliary ports 13 and at least some of the n1 antennas 2, that is, the transmission function in normal communication is realized by using each antenna in turn.

[0061] In some embodiments, performing SRS4 antenna rotation transmission or autonomous transmission switching by the radio frequency module 1 may include:

[0062] In the first transmission cycle, a signal is transmitted through the first antenna connected to the radio frequency module 1 to support the base station in detecting the channel quality of the corresponding antenna;

[0063] In the second transmission cycle, a signal is transmitted through the second antenna connected to the RF module 1 to support the base station in detecting the channel quality of the corresponding antenna;

[0064] In the third transmission cycle, a signal is transmitted through the third antenna connected to the RF module 1 to support the base station in detecting the channel quality of the corresponding antenna;

[0065] In the fourth transmission cycle, a signal is transmitted through the fourth antenna connected to the RF module 1 to support the base station in detecting the channel quality of the corresponding antenna.

[0066] The first antenna, the second antenna, the third antenna, and the fourth antenna may be four antennas formed by combining at least some of the m antennas 2 connected to the m auxiliary ports 13 and at least some of the n1 antennas 2. The first selection switch 14 and the second selection switch 16 are switched to select a corresponding antenna to realize a transmission function and transmit a signal.

[0067] like Figure 3 As shown, in some embodiments, the n2 T-ports P22 of the second selection switch 16 further include two T-ports P22 for respectively connecting to the first SRS transmission port SRS1 and the second SRS transmission port SRS2 of the RF transceiver 3 .

[0068] That is, in some embodiments, when performing SRS switching antenna transmission, part of the RF signal can be received from the first SRS transmission port SRS1 and the second SRS transmission port SRS2 of the RF transceiver 3 .

[0069] like Figure 3 As shown, in some embodiments, the m is 1, that is, the m auxiliary ports 13 are one, and the m antennas 2 connected to the m auxiliary ports are also one. Figure 3 In the example, the second selection switch 16 includes four P ports P21 and four T ports P22, that is, the number of n1 and n2 are both 4. Obviously, in some embodiments, the number of m, n1 and n2 is not limited to Figure 3 The number shown in can be any suitable number.

[0070] In some embodiments, when performing SRS switching antenna rotation, the antenna 2 connected to the auxiliary port 13 can be selected separately as the transmitting antenna through the first selection switch 14. At this time, the RF signal output by the first signal transmission port TX of the RF transceiver 3 can be transmitted through the antenna 2 connected to the auxiliary port 13; in addition, the connection between the target T port P22 connected to the first filter 15 and one of the target P ports P21 can be selected through the second selection switch 16, and the antenna 2 connected to one of the target P ports P21 can be selected as the transmitting antenna. At this time, the RF signal output by the first signal transmission port TX of the RF transceiver 3 can be transmitted to the antenna 2 connected to one of the target P ports P21 through the first filter 15 and the like for transmission; In addition, the second selection switch 16 can also be used to select the T port P22 connected to the first SRS transmission port SRS1 to be connected to one of the P ports P21, and the antenna connected to the P port P21 is used as the transmission antenna. At this time, the RF signal output by the first SRS transmission port SRS1 of the RF transceiver 3 can be transmitted through the antenna connected to the P port P21; In addition, the second selection switch 16 can also be used to select the T port P22 connected to the second SRS transmission port SRS2 to be connected to one of the P ports P21, and the antenna connected to the P port P21 is used as the transmission antenna. At this time, the RF signal output by the second SRS transmission port SRS2 of the RF transceiver 3 can be transmitted through the antenna connected to the P port P21. Thus, by switching the SRS transmission antenna in the above manner, the SRS switching antenna rotation function is realized.

[0071] In some embodiments, when the antenna connected to the P port P21 of the second selection switch 16 is selected as the transmitting antenna, the connection between the target T port P22 connected to the first filter 15 and the different target P ports P21 can also be established through the second selection switch 16, and the different antennas connected to the different target P ports P21 are respectively used as different antennas in the SRS switching antenna rotation. At this time, the RF signal output by the first signal transmission port TX of the RF transceiver 3 can be transmitted to the antenna 2 connected to the corresponding target P port P21 through the first filter 15 and the like for transmission. In this case, the first SRS transmission port SRS1 and the second SRS transmission port SRS2 of the RF transceiver 3 can also be omitted.

[0072] In some embodiments, Figure 3As shown, the n2 T-ports P22 of the second selection switch 16 also include a T-port P22 electrically connected to the signal receiving port Rx of the RF transceiver 3, and the RF module 1 also includes a second low-noise amplifier 17 and a second filter 18. The second filter 18 is connected between the input port 171 of the second low-noise amplifier 17 and the T-port P22 of the second selection switch 16 connected to the signal receiving port Rx, and the output port 172 of the second low-noise amplifier 17 is connected to the signal receiving port Rx.

[0073] Therefore, in some embodiments, another signal receiving channel can be realized through the second low noise amplifier 17 and the second filter 18, so that simultaneous multi-channel reception can be achieved.

[0074] In some embodiments, Figure 3 As shown, the RF transceiver includes two signal receiving ports Rx, namely, a signal receiving port Rx1 and a signal receiving port Rx2, and the output port 122 of the first low noise amplifier 12 and the output port 172 of the second low noise amplifier 17 are respectively connected to the two signal receiving ports Rx1 and Rx2.

[0075] See also Figure 4 , is another further structural schematic diagram of the RF module 1 in some embodiments of the present application.

[0076] Among them, Figure 4 As shown, the signal receiving port Rx includes two, namely, a signal receiving port Rx1 and a signal receiving port Rx2, the RF module 1 also includes a third selection switch 19, the third selection switch 19 includes two P ports P31 and two T ports P32, the two P ports P31 of the third selection switch 19 are used to respectively connect the two signal receiving ports Rx1 and Rx2 of the RF transceiver 3, and the two T ports P32 of the third selection switch 19 are respectively connected to the output port 122 of the first low noise amplifier 12 and the output port 172 of the second low noise amplifier 17 The third selection switch 19 is used to respectively establish a connection between the two T ports P32 and the two P ports P31, so that the output port 122 of the first low noise amplifier 12 and the output port 172 of the second low noise amplifier 17 are respectively connected to the two signal receiving ports Rx1 and Rx2, or to establish a connection between the two T ports P32 and one of the P ports P31, so that the output port 122 of the first low noise amplifier 12 and the output port 172 of the second low noise amplifier 17 are both connected to the signal receiving port Rx1 or Rx2.

[0077] Therefore, through the third selection switch 19, the signals can be received separately or in combination, which is suitable for different scenarios.

[0078] in, Figure 4 and Figure 3 The only difference shown is that it further includes the third selection switch 19. For other structures, see Figure 3 The relevant description will not be repeated here.

[0079] In some embodiments, m is greater than or equal to 4, and the RF module 1 supports the SRS switching antenna rotation function through the four antennas 2 connected to the four auxiliary ports 13 .

[0080] That is, in some embodiments, the m auxiliary ports 13 of the RF module 1 may be 4 or more auxiliary ports, and 4 antennas 2 of the m antennas 2 connected to the m auxiliary ports 13 of the RF module 1 may be used to implement the SRS switching antenna rotation function. Furthermore, in some embodiments, the four antennas used in the SRS switching antenna rotation function may all be antennas of the m antennas 2 connected to the m auxiliary ports 13.

[0081] As mentioned above, in the present application, the signal quality of the antenna 2 connected to the m auxiliary ports 13 of the RF module 1 can also be effectively guaranteed. Therefore, when the four antennas used in the SRS switching antenna rotation function are all antennas among the m antennas 2 connected to the m auxiliary ports 13, the insertion loss / loss can be reduced by at least 1.5 to 2.5 db (filter + channel selection switch) while realizing the SRS function, which greatly improves the power of the SRS, avoids low SRS power, and improves communication quality.

[0082] See also Figure 5 , which is a further structural diagram of the RF module 1 in some embodiments of the present application.

[0083] In some embodiments, Figure 5 As shown, the RF module 1 further includes a first power coupler O1, which is connected to the m auxiliary ports 13, and is also used to connect to a power detection port (not shown) of the RF transceiver 3.

[0084] Among them, the first power coupler O1 is used to couple and obtain the power of the antenna 2 connected to the m auxiliary ports 13, such as the transmission power, and feed it back to the power detection port of the RF transceiver 3, so that the RF transceiver 3 can obtain the power of the antenna 2 connected to the m auxiliary ports 13, and adjust the power amplification factor of the power amplifier 11, so that the transmission power of the antenna 2 is maintained within a reasonable range, so that the signal quality requirements can be met while meeting the safety requirements, for example, meeting the SAR (Specific Absorb ratio) compliance requirements.

[0085] in, Figure 5 In the figure, the m auxiliary ports 13 are taken as one as an example.

[0086] In some embodiments, the number of the first power couplers O1 is also m. When m is greater than 1, that is, when the m auxiliary ports 13 are more than one, the number of the first power couplers O1 is also more than one. Each first power coupler O1 is connected to a corresponding auxiliary port 13, and can obtain the power of the antenna 2 connected to the corresponding auxiliary port 13.

[0087] In some embodiments, Figure 5 As shown, the RF module 1 also includes a second power coupler O2, which is connected to the target T port P22 of the second selection switch 16, and the second power coupler O2 is also used to connect to the power detection port of the RF transceiver 3.

[0088] Among them, the second power coupler O2 is used to couple and obtain the power of the antenna 2 connected to the target P port P21 currently connected to the target T port P22 of the second selection switch 16, such as the transmission power, and feed it back to the power detection port of the RF transceiver 3, so that the RF transceiver 3 can obtain the power of the antenna 2 connected to the target P port P21, and adjust the power amplification factor of the power amplifier 11, so that the transmission power of the antenna 2 is maintained within a reasonable range, so that the signal quality requirements can be met while meeting the safety requirements, for example, meeting the SAR compliance requirements.

[0089] Among them, when the connection between the target T port P22 and different target P ports P21 is established through the second selection switch 16, the second power coupler O2 can obtain the transmission power of different antennas 2 connected to different target P ports P21, and can realize the acquisition of the transmission power of all antennas 2 connected to the P port P21 of the second selection switch 16.

[0090] in, Figure 5 For Figure 3 Based on the structure shown, the first power coupler O1 and the second power coupler O2 are further shown as examples. Obviously, the first power coupler O1 and / or the second power coupler O2 may be added to any of the above embodiments.

[0091] See also Figure 6 , which is a structural block diagram of the radio frequency system 100 in some embodiments of the present application.

[0092] Among them, Figure 6 As shown, the RF system 100 includes a RF transceiver 3 and the RF module 1 described in any of the above embodiments. The RF transceiver 3 is electrically connected to the antenna 2 through the RF module 1 to achieve RF transceiver function.

[0093] Among them, the more specific connection structure between the RF transceiver 3 and the RF module 1 can be referred to the above-mentioned related description, which will not be repeated here.

[0094] In addition to the ports described above, the RF transceiver 3 may also include other ports. For example, the RF module 1 may also include a MIPI (Mobile Industry Processor Interface) port, and the MIPI port is used to receive control signals from a processor or controller. The RF transceiver 3 may control the devices in the RF module 1 in response to the signals received by the MIPI port, and the devices may include the aforementioned first selection switch, the second selection switch 16, and the like.

[0095] See also Figure 7 , is a structural block diagram of an electronic device 200 in some embodiments of the present application. The electronic device 200 may include the aforementioned radio frequency system 100, and may also include the radio frequency module 1 described in any of the aforementioned embodiments.

[0096] In some further embodiments, the electronic device 200 may further include the antenna 2.

[0097] See also Figure 8 , which is a plan view of an electronic device 200 in some embodiments of the present application.

[0098] like Figure 8 As shown, the electronic device 200 further includes a mainboard 102 , wherein the aforementioned RF module 1 , RF transceiver 3 , etc. may be arranged on the mainboard 102 .

[0099] Among them, Figure 8 As shown, the electronic device 200 further includes a middle frame 103, which is used to support structures such as a display screen, and the middle frame 103 is used as a whole machine ground. The grounding layer on the mainboard 102 is connected to the middle frame 103 to provide a ground potential.

[0100] like Figure 8 As shown, the electronic device 200 includes a top end D1, a bottom end D2, a first side end D3 and a second side end D4.

[0101] In some embodiments, the mainboard 102 is disposed near the top D1 of the electronic device 200. In some embodiments, at least m antennas 2 of the electronic device 200 are disposed at the bottom D2 or near the bottom D2. The m auxiliary ports 13 of the RF module 1 can be connected to the m antennas 2 disposed at the bottom D2 or near the bottom D2, respectively. For example, Figure 8 As shown, the m auxiliary ports 13 of the radio frequency module 1 are respectively connected to the m antennas 2 arranged at the bottom end D2 or at a position close to the bottom end D2 through the conductive line L1.

[0102] The conductive line L1 may be a coaxial cable.

[0103] in, Figure 8 In the example, m is 1, that is, the m auxiliary ports 13 are one, wherein, Figure 8 In the example, the m auxiliary ports 13 are connected to an antenna 2 disposed at the bottom end D2. Figure 8 The electronic device 200 shown specifically includes Figure 1 The RF module 1 shown is used as an example. Obviously, the electronic device 200 may include the RF module 1 shown in any of the aforementioned embodiments. In some embodiments, the antenna 2 connected to the auxiliary port 13 may also be arranged at a position close to the bottom end D2 of the first side end D3 and / or the second side end D4.

[0104] Thus, since the RF module 1 is arranged on the main board 102 close to the top D1 of the electronic device 200, the RF module 1 is also close to the top D1 of the electronic device 200. When the antenna 2 connected to the RF module 1 is arranged at the bottom D2 of the electronic device 200 or close to the bottom D2, it needs to be connected through a longer conduction line L1. Since the conduction line L1 is longer, it will bring obvious conduction loss. If it is transmitted through the existing filter and channel selection switch in the RF module 1, the loss will be more significant. The present application sets up m additional auxiliary ports 13 for connecting to the m antennas 2 respectively, and establishes the connection between the power amplifier 11, the first low noise amplifier 12 and at least one auxiliary port 13 through the first selection switch 14, so that the signal transmission channel of the m antennas 2 can bypass the existing filter and channel selection switch, and avoid the loss caused by the transmission through the filter and channel selection switch, which is beneficial to reduce the loss and improve the communication quality.

[0105] In some embodiments, the antenna 2 connected to the P port P21 of the second selection switch 16 of the RF module 1 can be set at the top D1 of the electronic device 200 or at a position close to the top D1 of the first side end D3 and / or the second side end D4, so that the distance to the RF module 1 is closer, the transmission loss is small, and the noise is filtered out after filtering through the first filter 15, which can further improve the signal quality.

[0106] In some embodiments, the bottom end D2 of the electronic device 200 is the end where the headphone jack and the USB port are provided, and the top end D1 of the electronic device 200 is the other end opposite to the end where the headphone jack and the USB port are provided. For example, the top end D1 of the electronic device 200 is the end where the camera is provided.

[0107] Among them, Figure 8 As shown, the electronic device 200 further includes a frame B1 , and the antenna 2 is disposed on the frame B1 of the electronic device 200 .

[0108] That is, in some embodiments, the antenna 2 may be specifically disposed at a border B1 of the electronic device 200 .

[0109] Among them, Figure 8 As shown, the antenna 2 is formed by spacing through the gap X1.

[0110] In some embodiments, the frame B1 of the electronic device 200 is a metal frame, and the antenna 2 is a metal frame segment formed by opening the gap X1 in the metal frame of the electronic device 200 .

[0111] In some other embodiments, the frame B1 of the electronic device 200 is a non-metal frame, and the antenna 2 is a metal segment disposed in the frame of the electronic device 200 .

[0112] That is, in other embodiments, the frame B1 of the electronic device 200 may also be a non-metal frame with low conductivity such as plastic, ceramic, etc. The antenna 2 is a metal segment disposed in the frame B1 of the electronic device 200. The antenna 2 may be embedded in the frame of the electronic device 200, or disposed on the inner side of the frame of the electronic device 200.

[0113] in, Figure 7 and Figure 8 Only a partial structure of the electronic device 200 is illustrated, that is, only the relevant structure of the radio frequency system 100 is illustrated. Obviously, the electronic device 200 may also include other structures, such as a memory, a processor, a display screen, etc., which will not be repeated here.

[0114] The electronic device 200 of the present application may be any electronic device with an antenna and a radio frequency module, such as a mobile phone or a tablet computer.

[0115] The RF module 1, RF system 100 and electronic device 200 of the present application, for some antennas with poor signal quality, such as m antennas 2 far away from the RF module 1, respectively connect to the m antennas 2 by additionally setting up m auxiliary ports 13, and establish a connection between the power amplifier 11, the first low-noise amplifier 12 and at least one auxiliary port 13 through the first selection switch 14, so that the signal transmission channel of the m antennas 2 can bypass the existing filters and channel selection switches, thereby avoiding the loss caused by transmission through the filters and channel selection switches, which is beneficial to reducing losses and improving communication quality.

[0116] Among them, each embodiment of the present application may have its own focus, and for content that is not described in detail in some embodiments, please refer to the relevant content of other embodiments.

[0117] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A radio frequency module, characterized in that: include: Power amplifier; The first low noise amplifier; m auxiliary ports, used to be connected to the m antennas respectively, where m is a positive integer greater than or equal to 1; and A first selection switch, the first selection switch includes 2 P ports and n T ports, the 2 P ports are connected to the power amplifier and the first low noise amplifier, the n T ports are connected to at least the m auxiliary ports respectively, and the 2PnT switch is used to establish a connection between the power amplifier, the first low noise amplifier and at least one auxiliary port, wherein n is a positive integer greater than or equal to 1.

2. The radio frequency module according to claim 1, characterized in that: The input port of the power amplifier is used to connect to the first signal transmitting port of the RF transceiver, the output port of the first low-noise amplifier is used to be electrically connected to the signal receiving port of the RF transceiver, and the two P ports of the first selection switch are respectively connected to the output port of the power amplifier and the input port of the first low-noise amplifier.

3. The radio frequency module according to claim 2, characterized in that: The connection established by the first selection switch includes: a connection between an output port of the power amplifier and the at least one auxiliary port, or a connection between an input port of the first low noise amplifier and the at least one auxiliary port.

4. The radio frequency module according to claim 3, characterized in that: When the first selection switch establishes a connection between the output port of the power amplifier and the at least one auxiliary port, the transmission function of at least one antenna connected to the at least one auxiliary port is realized; when the first selection switch establishes a connection between the input port of the first low-noise amplifier and the at least one auxiliary port, the reception function of at least one antenna connected to the at least one auxiliary port is realized.

5. The radio frequency module according to claim 2, characterized in that: The RF module also includes a first filter, and the n T ports of the first selection switch are respectively connected to the at least one auxiliary port and the first filter, wherein n is a positive integer greater than or equal to 2, and the first filter is also used to be electrically connected to at least one antenna. The connections established by the first selection switch include: connections between the output port of the power amplifier and the input port of the first low-noise amplifier and at least one auxiliary port and the first filter, respectively, or connections between the output port of the power amplifier and the input port of the first low-noise amplifier and the first filter and the at least one auxiliary port, respectively.

6. The radio frequency module according to claim 5, characterized in that: The RF module also includes a second selection switch, which includes n1 P ports and n2 T ports, where n1 and n2 are both positive integers greater than or equal to 1, the first filter is connected to one of the target T ports in the second selection switch, the n1 P ports of the second selection switch are used to connect to n1 antennas respectively, and the second selection switch is at least used to establish a connection between the target T port and at least one of the target P ports of the second selection switch.

7. The radio frequency module according to claim 6, characterized in that: When the first selection switch establishes connections between the output port of the power amplifier, the input port of the first low-noise amplifier, and the at least one auxiliary port and the first filter respectively, the transmission function of at least one antenna connected to the at least one auxiliary port is realized, and the receiving function of at least one antenna connected to the at least one target P port is realized. When the first selection switch establishes connections between the output port of the power amplifier, the input port of the first low-noise amplifier, and the first filter and the at least one auxiliary port respectively, the receiving function of at least one antenna connected to the at least one auxiliary port is realized, and the transmission function of at least one antenna connected to the at least one target P port is realized.

8. The radio frequency module according to claim 6, characterized in that: The sum of m and n1 is greater than or equal to 4, and the antenna connected to the RF module through at least one auxiliary port and at least part of the n1 antennas support the SRS switching antenna rotation function.

9. The radio frequency module according to claim 8, characterized in that: The n2 T-ports of the second selection switch further include two T-ports for respectively connecting to the first SRS transmission port and the second SRS transmission port of the radio frequency transceiver.

10. The radio frequency module according to claim 6, characterized in that: The n2 T ports of the second selection switch also include a T port for electrically connecting to a signal receiving port of the RF transceiver. The RF module also includes a second low-noise amplifier and a second filter. The second filter is connected between an input port of the second low-noise amplifier and a T port for connecting to the signal receiving port. The output port of the second low-noise amplifier is connected to the signal receiving port.

11. The radio frequency module according to claim 10, characterized in that: The radio frequency transceiver includes two signal receiving ports, and the output ports of the first low noise amplifier and the second low noise amplifier are connected to the two signal receiving ports respectively.

12. The radio frequency module according to claim 10, characterized in that: The RF transceiver includes two signal receiving ports, and the RF module also includes a third selection switch, the third selection switch includes two P ports and two T ports, the two P ports of the third selection switch are used to respectively connect the two signal receiving ports of the RF transceiver, the two T ports of the third selection switch are respectively connected to the output port of the first low-noise amplifier and the output port of the second low-noise amplifier, and the third selection switch is used to respectively establish a connection between the two T ports and the two P ports, or to establish a connection between the two T ports and one of the P ports.

13. The radio frequency module according to claim 1, characterized in that: The m is greater than or equal to 4, and the RF module supports the SRS switching antenna rotation function through the four antennas connected to the four auxiliary ports.

14. The radio frequency module according to claim 1, characterized in that: The radio frequency module also includes a first power coupler, which is connected to the m auxiliary ports, and the first power coupler is also used to connect to a power detection port of the radio frequency transceiver.

15. The radio frequency module according to claim 6, characterized in that: The radio frequency module also includes a second power coupler, the first power coupler is connected to the target T port, and the second power coupler is also used to connect to the power detection port of the radio frequency transceiver.

16. A radio frequency system, characterized in that: It comprises a radio frequency transceiver and a radio frequency module as described in any one of claims 1 to 15, wherein the radio frequency transceiver is electrically connected to an antenna through the radio frequency module to realize a radio frequency transceiver function.

17. An electronic device, characterized in that: Comprising a radio frequency system as claimed in claim 16.

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