Radio frequency system and terminal
By setting up an intermodulation signal suppressor in the RF system, the target transmitting signal is suppressed from entering the first RF amplifier, which solves the problem of intermodulation interference in non-independent networking scenarios, and significantly improves the user's communication experience.
Patent Information
- Application Number
- CN202421180336.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In non-independent networking scenarios, the intermodulation interference between signals of the two networks cannot be effectively avoided, affecting the user's communication experience.
An intermodulation signal suppressor is provided in the radio frequency system to suppress the target transmitting signal into the first radio frequency amplifier via the first antenna, thereby avoiding interference from intermodulation signal.
It effectively avoids intermodulation interference in non-independent networking scenarios and improves the communication experience.
Smart Images
Figure CN222484701U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of communications, and in particular to a radio frequency system and a terminal. Background Art
[0002] The non-independent networking scenario is a scenario in which the user terminal uses two networks (for example, 4G network and 5G network) at the same time. Non-independent networking means that the user terminal uses the spectrum resources of the two networks at the same time, with both uplink transmission and downlink reception. In the complex resource allocation, intermodulation interference between the signals of the two networks is inevitable. The intermodulation interference will interfere with the receiving signal of a certain network's frequency band, which will significantly affect the user's communication experience, and it is easy to cause problems such as slower download speeds and noise in calls.
[0003] The current intermodulation interference avoidance solutions usually avoid the problem by placing the RF amplifiers of the two networks in different shielding covers, isolating the antennas of the two networks, or isolating the signal paths of the two networks. However, the current solutions still cannot effectively avoid some intermodulation interference in non-independent networking scenarios, and the intermodulation interference suppression effect in non-independent networking scenarios needs to be further improved. Utility Model Content
[0004] The embodiment of the utility model provides a solution that can effectively improve the intermodulation interference suppression effect in a non-independent networking scenario.
[0005] The utility model embodiment provides the following technical solutions:
[0006] According to one embodiment of the utility model, a radio frequency system includes: a first radio frequency amplifier and a second radio frequency amplifier, the first radio frequency amplifier is used for a first network, and the second radio frequency amplifier is used for a second network; an antenna group, the antenna group includes at least a first antenna and a second antenna; the first antenna is connected to the first radio frequency amplifier, and the second antenna is connected to the second radio frequency amplifier; an intermodulation signal suppression component is arranged between the first antenna and the first radio frequency amplifier; when the first network and the second network are in a non-independent networking scenario, the intermodulation signal suppression component suppresses a target transmission signal from entering the first radio frequency amplifier via the first antenna, wherein the target transmission signal is a signal transmitted by the second radio frequency amplifier through the second antenna.
[0007] In some embodiments of the present invention, the radio frequency system further includes a first filter; the first antenna is connected to a first end of the first filter, and a second end of the first filter is connected to the first radio frequency amplifier via the intermodulation signal suppression component.
[0008] In some embodiments of the present invention, the intermodulation signal suppression component is a switching switch, and the first end of the switching switch is connected to the second end of the first filter; wherein, in the non-independent networking scenario, the second end of the switching switch is grounded; in the non-non-independent networking scenario, the second end of the switching switch is connected to the first RF amplifier.
[0009] In some embodiments of the present invention, the switching switch is a single-pole double-throw switch, the first end of the switching switch is the fixed end of the single-pole double-throw switch, and the second end of the switching switch is the moving end of the single-pole double-throw switch.
[0010] In some embodiments of the present invention, the first antenna and the second antenna are antennas of the same frequency.
[0011] In some embodiments of the present invention, the first network is a 5G network; the second network is a 4G network.
[0012] In some embodiments of the present invention, in a non-independent networking scenario where the 5G network and the 4G network are in a predetermined frequency band combination, the intermodulation signal suppression component suppresses the target transmit signal from entering the first RF amplifier via the first antenna.
[0013] In some embodiments of the present invention, the predetermined frequency band combination includes at least a first frequency band combination and a second frequency band combination, in which the frequency band of the 5G network is B66 and the frequency band of the 4G network is N5, and in which the frequency band of the 5G network is B66 and the frequency band of the 4G network is N2.
[0014] In some embodiments of the present invention, the radio frequency system further includes a second filter; the second antenna is connected to a first end of the second filter, and a second end of the second filter is connected to the second radio frequency amplifier.
[0015] According to another embodiment of the present invention, a terminal may include the radio frequency system described in any one of the embodiments of the present application.
[0016] The radio frequency system of an embodiment of the utility model includes: a first radio frequency amplifier and a second radio frequency amplifier, the first radio frequency amplifier is used for a first network, and the second radio frequency amplifier is used for a second network; an antenna group, the antenna group includes at least a first antenna and a second antenna; the first antenna is connected to the first radio frequency amplifier, and the second antenna is connected to the second radio frequency amplifier; an intermodulation signal suppression component is arranged between the first antenna and the first radio frequency amplifier; when the first network and the second network are in a non-independent networking scenario, the intermodulation signal suppression component suppresses the target transmission signal from entering the first radio frequency amplifier via the first antenna, wherein the target transmission signal is a signal transmitted by the second radio frequency amplifier through the second antenna.
[0017] In this way, by setting an intermodulation signal suppressor between the first antenna and the first RF amplifier, when the first network and the second network are in a non-independent networking scenario, the intermodulation signal suppressor can suppress the target transmission signal transmitted by the second RF amplifier through the second antenna from entering the first RF amplifier via the first antenna, which can effectively avoid the generation of intermodulation signal interference in the first RF amplifier. Furthermore, the intermodulation interference in the non-independent networking scenario of the first network and the second network can be effectively avoided, and the intermodulation interference suppression effect in the non-independent networking scenario can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 A schematic diagram of a radio frequency system according to an embodiment of the present utility model is shown.
[0020] Figure 2 A schematic diagram of a radio frequency system according to another embodiment of the utility model is shown.
[0021] Figure 3 A schematic diagram of a radio frequency system according to another embodiment of the utility model is shown.
[0022] Figure 4 A schematic diagram of a radio frequency system according to another embodiment of the utility model is shown. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0026] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0027] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.
[0028] First, see Figure 1 The RF system 100 includes a first RF amplifier 110 , a second RF amplifier 120 , an antenna group 130 and an intermodulation signal suppression component 140 . The antenna group 130 may include at least a first antenna 131 and a second antenna 132 .
[0029] The first RF amplifier is used for the first network, and the second RF amplifier is used for the second network. For example, the first network is a 5G network, and the first RF amplifier is a 5G PA (i.e., a RF power amplifier (Power Amplifier) in 5G communication), and the second network is a 4G network, and the second RF amplifier is a 4G PA (i.e., a RF power amplifier (Power Amplifier) in 4G communication). It can be understood that the first network and the second network can be other network combinations.
[0030] The first antenna 131 is connected to the first RF amplifier 110, and the second antenna 132 is connected to the second RF amplifier 120; an intermodulation signal suppressor 140 is arranged between the first antenna 131 and the first RF amplifier 110; the first network and the second network are in a non-independent networking scenario, and the intermodulation signal suppressor 140 can suppress the target transmission signal from entering the first RF amplifier 110 via the first antenna 131, wherein the target transmission signal is the signal transmitted by the second RF amplifier 120 through the second antenna 132.
[0031] By setting an intermodulation signal suppressor 140 between the first antenna 131 and the first RF amplifier 110, when the first network and the second network are in a non-independent networking scenario, the intermodulation signal suppressor 140 can suppress the target transmission signal transmitted by the second RF amplifier 120 through the second antenna 132 from entering the first RF amplifier 110 via the first antenna 131, and can effectively avoid the generation of cross-modulation signal (Cross-Modulation, XM) interference in the first RF amplifier 110. Furthermore, almost all intermodulation interference in the non-independent networking scenario of the first network and the second network can be effectively avoided, and the intermodulation interference suppression effect in the non-independent networking scenario can be effectively improved.
[0032] For further information, see Figure 3 In some embodiments, the RF system 100 may further include a first filter 150 ; the first antenna 131 is connected to a first end of the first filter 150 , and a second end of the first filter 150 is connected to the first RF amplifier 110 via an intermodulation signal suppression component 140 .
[0033] The first filter 150 can filter the target transmission signal received by the first antenna 131, filter out some signals that may generate intermodulation interference, and then further transmit it to the intermodulation signal suppression component 140. The intermodulation signal suppression component 140 can further suppress the signal that may generate intermodulation interference from entering the first RF amplifier 110, thereby further improving the intermodulation interference suppression effect.
[0034] The RF system 100 may further include a second filter 160 . The second antenna 132 may be connected to a first end of the second filter 160 . A second end of the second filter 160 may be connected to the second RF amplifier 120 . The second filter 160 may filter the signal received by the second antenna 132 .
[0035] For further information, see Figure 3 In one embodiment, the intermodulation signal suppression component 140 is specifically a switching switch, and the first end of the switching switch is connected to the second end of the first filter 150; wherein, in the non-independent networking scenario, the second end of the switching switch is grounded; in the non-non-independent networking scenario, the second end of the switching switch is connected to the first RF amplifier 110.
[0036] Furthermore, in a non-independent networking scenario, the second end of the switch is switched to connect to the first RF amplifier 110. On the contrary, in a non-independent networking scenario, the second end of the switch is switched to ground to prevent the received target transmission signal from entering the first RF amplifier 110.
[0037] Among them, in this one mode, the switching switch is a single-pole double-throw switch (SPDT switch), the first end of the switching switch is the fixed end of the SPDT switch, and the second end of the switching switch is the movable end of the SPDT switch, that is, the movable end will be switched to ground in a non-independent networking scenario, and in a non-independent networking scenario, the movable end will be switched to connect to the first RF amplifier 110. In other modes, the switching switch can also select other types of switches according to actual conditions.
[0038] Furthermore, the first antenna 131 and the second antenna 132 may be antennas of the same frequency. Figure 4In one example, the device may also generally include an antenna 133, an antenna 134, and an antenna 135, and further, intermodulation suppression may be performed only on the first antenna 131 and the second antenna 132 of the same frequency by adding an intermodulation signal suppressor 140.
[0039] Furthermore, in a specific embodiment, the first network mentioned in the present application can be specifically a 5G network, and the second network can be specifically a 4G network. For non-independent networking scenarios of 4G networks and 5G networks, the embodiments of the present application can effectively suppress intermodulation interference.
[0040] In one embodiment, in a non-independent networking scenario in which the 5G network and the 4G network are in a predetermined frequency band combination, the intermodulation signal suppression component suppresses the target transmit signal from entering the first RF amplifier via the first antenna.
[0041] For the non-independent networking scenario where the 5G network and the 4G network are in a predetermined frequency band combination, intermodulation interference suppression is performed by adding an intermodulation signal suppression component. The predetermined frequency band combination can be a predetermined combination that can generate intermodulation interference. Furthermore, the intermodulation signal suppression component can be set only between the antenna and the RF amplifier corresponding to the predetermined frequency band combination.
[0042] Specifically, in some specific implementations, the predetermined frequency band combination includes at least a first frequency band combination and a second frequency band combination, the frequency band of the 5G network in the first frequency band combination is B66 and the frequency band of the 4G network is N5, and the frequency band of the 5G network in the second frequency band combination is B66 and the frequency band of the 4G network is N2.
[0043] Taking the first frequency band combination as an example, the TX (transmit) frequency range under B66 is 1710-1780Mhz, the TX (transmit) frequency range under N5 is 824-849Mhz, and the receiving frequency of N5 is 869-894Mhz. When the B66 main frequency is subtracted from the N5 main frequency (intermodulation algorithm), part of the calculated frequency must fall within the receiving frequency band of N5, thereby interfering with the receiving sensitivity or coupled TIS performance of N5. Under this combination, the second RF amplifier enters the first RF amplifier via the first antenna and generates an intermodulation signal in the first RF amplifier. If an intermodulation suppressor is set, the intermodulation signal suppressor can suppress the target transmit signal from entering the first RF amplifier via the first antenna to generate an intermodulation signal.
[0044] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0045] Further, according to another embodiment of the present invention, a terminal may include the radio frequency system described in any embodiment of the present application.
[0046] The above is a detailed introduction to a radio frequency system and terminal provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A radio frequency system, characterized in that: include: A first radio frequency amplifier and a second radio frequency amplifier, wherein the first radio frequency amplifier is used for the first network and the second radio frequency amplifier is used for the second network; An antenna group, the antenna group at least comprising a first antenna and a second antenna; the first antenna is connected to the first radio frequency amplifier, the second antenna is connected to the second radio frequency amplifier; an intermodulation signal suppression element is arranged between the first antenna and the first radio frequency amplifier; In a non-independent networking scenario where the first network and the second network are in the non-independent networking scenario, the intermodulation signal suppression component suppresses a target transmit signal from entering the first RF amplifier via the first antenna, wherein the target transmit signal is a signal transmitted by the second RF amplifier through the second antenna.
2. The radio frequency system according to claim 1, characterized in that: The radio frequency system further includes a first filter; the first antenna is connected to a first end of the first filter, and a second end of the first filter is connected to the first radio frequency amplifier through the intermodulation signal suppression component.
3. The radio frequency system according to claim 2, characterized in that: The intermodulation signal suppression component is a switching switch, and the first end of the switching switch is connected to the second end of the first filter; wherein, in the non-independent networking scenario, the second end of the switching switch is grounded; in the non-non-independent networking scenario, the second end of the switching switch is connected to the first RF amplifier.
4. The radio frequency system according to claim 3, characterized in that: The switching switch is a single-pole double-throw switch, the first end of the switching switch is a fixed end of the single-pole double-throw switch, and the second end of the switching switch is a movable end of the single-pole double-throw switch.
5. The radio frequency system according to any one of claims 1 to 3, characterized in that: The first antenna and the second antenna are antennas of the same frequency.
6. The radio frequency system according to claim 1, characterized in that: The first network is a 5G network; the second network is a 4G network.
7. The radio frequency system according to claim 6, characterized in that: In a non-independent networking scenario where the 5G network and the 4G network are in a predetermined frequency band combination, the intermodulation signal suppression component suppresses the target transmit signal from entering the first RF amplifier via the first antenna.
8. The radio frequency system according to claim 7, characterized in that: The predetermined frequency band combination includes at least a first frequency band combination and a second frequency band combination, in which the frequency band of the 5G network is B66 and the frequency band of the 4G network is N5, and in which the frequency band of the 5G network is B66 and the frequency band of the 4G network is N2.
9. The radio frequency system according to claim 1, characterized in that: The radio frequency system also includes a second filter; the second antenna is connected to a first end of the second filter, and a second end of the second filter is connected to the second radio frequency amplifier.
10. A terminal, characterized in that: Comprising a radio frequency system as claimed in any one of claims 1 to 9.