WO2022156599A1 - 射频电路及电子设备 - Google Patents

射频电路及电子设备 Download PDF

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Publication number
WO2022156599A1
WO2022156599A1 PCT/CN2022/071959 CN2022071959W WO2022156599A1 WO 2022156599 A1 WO2022156599 A1 WO 2022156599A1 CN 2022071959 W CN2022071959 W CN 2022071959W WO 2022156599 A1 WO2022156599 A1 WO 2022156599A1
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Prior art keywords
radio frequency
switch
electrically connected
terminal
module
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PCT/CN2022/071959
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English (en)
French (fr)
Inventor
易伟
刘定球
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维沃移动通信有限公司
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Publication of WO2022156599A1 publication Critical patent/WO2022156599A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode

Definitions

  • the present application belongs to the field of antenna technology, and specifically relates to a radio frequency circuit and electronic equipment.
  • the present application aims to provide a radio frequency circuit and an electronic device, which can solve the problem of a large number of antennas required by the radio frequency circuit in the ENDC scenario.
  • an embodiment of the present application proposes a radio frequency circuit, which is applied to a long-term evolution and new air interface dual-connection ENDC scenario, including:
  • a radio frequency transceiver a first radio frequency module, a second radio frequency module, a third radio frequency module, a combining module, a first switch assembly, and a first antenna, wherein,
  • the radio frequency transceiver is respectively electrically connected to the first end of the first radio frequency module, the first end of the second radio frequency module and the first end of the third radio frequency module;
  • the first port of the combining module can be electrically connected to the second end of the first radio frequency module or the second end of the second radio frequency module through the first switch assembly, and the second terminal of the combining module The port is electrically connected to the second end of the third radio frequency module, and the third port of the combining module is electrically connected to the first antenna;
  • the combining module when the first antenna receives the first radio frequency signal and the second radio frequency signal, the combining module is used for transmitting the first radio frequency signal to the third radio frequency module, and for The second radio frequency signal is transmitted to the first radio frequency module or the third radio frequency module.
  • an embodiment of the present application provides an electronic device, including the radio frequency circuit described in the first aspect.
  • the combining module in the case where the first antenna receives the first radio frequency signal and the second radio frequency signal, the combining module can combine the first radio frequency signal with the first radio frequency signal.
  • the signal is transmitted to the third radio frequency module, and the combining module can also transmit the second radio frequency signal to the first radio frequency module or the second radio frequency module, so as to realize the reception of the first radio frequency signal and the second radio frequency signal, and avoid the first radio frequency signal.
  • the signal and the second radio frequency signal interfere during the receiving process, thereby effectively improving the transceiver effect of the antenna.
  • the setting of the combining module realizes that the first antenna can receive two radio frequency signals at the same time, even if one less antenna is provided, the transceiver function of the radio frequency circuit can also be realized, thereby achieving the purpose of reducing the number of antennas of the radio frequency circuit.
  • the first antenna can receive two radio frequency signals at the same time, and there will be no interference between the two radio frequency signals; therefore, the radio frequency circuit in the present application can also be set with five antennas.
  • the transceiver function of the radio frequency circuit in the ENDC scenario effectively reduces the number of antennas of the radio frequency circuit.
  • FIG. 4 is the third structural diagram of the combining module provided by the embodiment of the present application.
  • FIG. 5 is a second structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • FIG. 6 is a third structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • FIG. 7 is a fourth structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • FIG. 8 is a fifth structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • FIG. 9 is a sixth structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • FIG. 10 is the seventh structural diagram of the radio frequency circuit provided by the embodiment of the present application.
  • FIG. 11 is the eighth structural diagram of the radio frequency circuit provided by the embodiment of the present application.
  • FIG. 12 is a ninth structural diagram of a radio frequency circuit provided by an embodiment of the present application.
  • an embodiment of the present application provides a radio frequency circuit, which can be applied to an ENDC scenario, and the radio frequency circuit includes:
  • the radio frequency transceiver 10 the first radio frequency module 21 , the second radio frequency module 22 , the third radio frequency module 23 , the combining module 30 , the first switch assembly 41 and the first antenna 51 , wherein,
  • the radio frequency transceiver 10 is respectively electrically connected to the first end of the first radio frequency module 21 , the first end of the second radio frequency module 22 and the first end of the third radio frequency module 23 ;
  • the first port of the combiner module 30 can be electrically connected to the second end of the first radio frequency module 21 or the second end of the second radio frequency module 22 through the first switch assembly 41 , and the second port of the combiner module 30 is electrically connected to the third end of the first radio frequency module 21 .
  • the second end of the radio frequency module 23 is electrically connected, and the third port of the combining module 30 is electrically connected to the first antenna 51;
  • the combining module 30 is used for transmitting the first radio frequency signal to the third radio frequency module 23, and for transmitting the second radio frequency signal It is transmitted to the first radio frequency module 21 or the second radio frequency module 22 .
  • the combining module 30 can combine the first radio frequency signal and the second radio frequency signal.
  • the signal is transmitted to the third radio frequency module 23, and the combining module 30 can also transmit the second radio frequency signal to the first radio frequency module 21 or the second radio frequency module 22, so as to realize the reception of the first radio frequency signal and the second radio frequency signal, and avoid The interference of the first radio frequency signal and the second radio frequency signal during the receiving process is prevented, thereby effectively improving the transceiver effect of the antenna.
  • the setting of the combining module 30 realizes that the first antenna 51 can receive two radio frequency signals at the same time, that is, setting one less antenna can also realize the transceiver function of the radio frequency circuit, thereby achieving the purpose of reducing the number of antennas of the radio frequency circuit.
  • the first antenna 51 can receive two radio frequency signals at the same time, and there will be no interference between the two radio frequency signals; therefore, the radio frequency circuit in this application is provided with five antennas.
  • the transceiver function of the radio frequency circuit in the ENDC scenario can be realized. Compared with the prior art, six antennas need to be set up, which effectively reduces the number of antennas of the radio frequency circuit.
  • the radio frequency circuit further includes a second antenna 52 , a third antenna 53 , a fourth antenna 54 , a fifth antenna 55 , a fourth radio frequency module 24 , and a fifth radio frequency module 25 , a sixth radio frequency module 26, a seventh radio frequency module 27, an eighth radio frequency module 28, a second switch assembly 42, a third switch assembly 43, a fourth switch assembly 44 and a fifth switch assembly 45;
  • the first end of the fourth radio frequency module 24 is electrically connected to the radio frequency transceiver 10, and the second end of the fourth radio frequency module 24 is electrically connected to the first moving end of the second switch assembly 42;
  • the first end of the fifth radio frequency module 25 is electrically connected to the radio frequency transceiver 10, and the second end of the fifth radio frequency module 25 is electrically connected to the second moving end of the second switch assembly 42;
  • the first end of the sixth radio frequency module 26 is electrically connected to the radio frequency transceiver 10, and the second end of the sixth radio frequency module 26 is electrically connected to the first end of the third switch assembly 43;
  • the first end of the seventh radio frequency module 27 is electrically connected to the radio frequency transceiver 10, and the second end of the seventh radio frequency module 27 is electrically connected to the first moving end of the fourth switch assembly 44;
  • the first end of the eighth radio frequency module 28 is electrically connected to the radio frequency transceiver 10, and the second end of the eighth radio frequency module 28 is electrically connected to the second moving end of the fourth switch assembly 44;
  • the third port of the combining module 30 is electrically connected to the second end of the third switch assembly 43;
  • the first radio frequency module 21 can be electrically connected to the third active terminal of the second switch assembly 42 through the first switch assembly 41 , and the first radio frequency module 21 can be electrically connected to the third active terminal of the fourth switch assembly 44 through the first switch assembly 41 . connection, the first radio frequency module 21 can also be electrically connected to the fifth antenna 55 through the first switch assembly 41;
  • the third end of the third switch assembly 43 is electrically connected to the stationary end of the fourth switch assembly 44 , the fourth end of the third switch assembly 43 is electrically connected to the first end of the fifth switch assembly 45 , and the The fifth end is electrically connected to the fourth antenna 54, and the sixth end of the third switch assembly 43 is electrically connected to the first antenna 51;
  • the second end of the fifth switch assembly 45 is electrically connected to the stationary end of the second switch assembly 42, the third end of the fifth switch assembly 45 is electrically connected to the third antenna 53, and the fourth end of the fifth switch assembly 45 is electrically connected to the third antenna 53.
  • the two antennas 52 are electrically connected.
  • the second switch assembly 42 may be a single-pole, four-throw switch, and the fourth moving end thereof is suspended in the air;
  • the third switch assembly 43 may be a three-pole, three-throw switch;
  • the fourth switch assembly 44 may be a single-pole, four-throw switch, and The fourth movable end is suspended in the air;
  • the fifth switch assembly 45 may be a double-pole double-throw switch.
  • the second switch assembly 42 and the fourth switch assembly 44 may also be single-pole three-throw switches.
  • the logic state of the third switch component 43 will not change during the rotation of the radio frequency signal, thereby ensuring that the LTE signal path will not be passively switched. , so that setting 5 antennas can also realize the transceiver function of the radio frequency circuit in the ENDC scenario.
  • the first radio frequency signal is an LTE radio frequency signal
  • the second radio frequency signal is an N41 radio frequency signal.
  • the second antenna 52 when the second end of the fourth radio frequency module 24 is electrically connected to the second antenna 52 through the second switch assembly 42 and the fifth switch assembly 45, the second antenna 52 is used for LTE diversity reception; in When the second end of the fifth radio frequency module 25 is electrically connected to the second antenna 52 through the second switch assembly 42 and the fifth switch assembly 45, the second antenna 52 is used for LTE diversity reception or N41 diversity reception; in the sixth When the second end of the radio frequency module 26 is electrically connected to the fourth antenna 54 through the third switch assembly 43, the fourth antenna 54 is used for LTE radio frequency transmission or reception; When the switch assembly 43 and the fifth switch assembly 45 are electrically connected to the third antenna 53, the third antenna 53 is used for LTE main set reception; at the second end of the eighth radio frequency module 28, the third switch assembly 43 and the third antenna When the five-switch assembly 45 is electrically connected to the third antenna 53, the third antenna 53 is used for LTE main set reception or N41 main set reception.
  • the second end of the first radio frequency module 21 can be connected to the An antenna 51 or the second antenna 52 or the third antenna 53 or the fifth antenna 55 is electrically connected to realize the transmission of the N41 radio frequency signal in turn.
  • the first antenna 51 when the second end of the second radio frequency module 22 is electrically connected to the first antenna 51 through the combining module 30 and the third switch assembly 43, the first antenna 51 is used for N41 diversity reception; in the third When the second end of the radio frequency module 23 is electrically connected to the first antenna 51 through the combining module 30 and the third switch assembly 43, the first antenna 51 performs LTE diversity reception.
  • the combining module 30 includes a first combiner 31 and a first switch 32 .
  • the first end of the first combiner 31 is electrically connected to the first port, and the second The terminal is electrically connected to the second port, the third terminal of the first combiner 31 is electrically connected to the third port; the first terminal of the first switch 32 is electrically connected to the second port, and the second terminal of the first switch 32 is electrically connected to the third terminal.
  • the first combiner 31 includes a first filter and a second filter, the first end of the first filter is electrically connected to the first port, and the second end of the first filter is electrically connected to the third port connected, the first end of the second filter is electrically connected to the second port, and the second end of the second filter is electrically connected to the third port; and the first filter can be used to filter frequencies other than 2496MHz to 2690MHz processing, and can cover frequency bands such as B41/N 41; the second filter is used to filter frequencies other than 1710MHz to 2170MHz, and can cover frequency bands such as B3/B39, so that the RF circuit can achieve B3/B39+N41 RF switching requirements.
  • the second filter when the first switch 32 is in an on state, the second filter is in a short-circuit state, and the third radio frequency module 23 is directly electrically connected to the first antenna 51 through the third switch assembly 43; when the first switch 32 is in an off state In the on state, the third radio frequency module 23 is electrically connected to the first antenna 51 through the second filter and the third switch component 43 .
  • the radio frequency signal received by the first antenna 51 can be prevented from being transmitted to the third radio frequency module 23 through the second filter, and the radio frequency signal can be reduced.
  • the loss of transmission in the second filter and meet the requirement of LTE four-antenna switching.
  • first combiner 31 and the first switch 32 can also be integrated to simplify the circuit connection of the radio frequency circuit.
  • the combining module 30 includes a second combiner 33 , a second switch 34 and a third switch 35 , wherein the stationary terminal of the second switch 34 is electrically connected to the second port, and the terminal of the second switch 34 is electrically connected to the second port.
  • the first moving end is electrically connected to the second end of the second combiner 33
  • the second moving end of the second switch 34 is electrically connected to the first moving end of the third switch 35
  • the second moving end of the third switch 35 is electrically connected to the first moving end of the third switch 35 .
  • the third terminal of the second combiner 33 is electrically connected
  • the stationary terminal of the third switch 35 is electrically connected to the third port
  • the first terminal of the second combiner 33 is electrically connected to the first port.
  • the second combiner 33 includes a third filter and a fourth filter, the first end of the third filter is electrically connected to the first port, and the second end of the third filter is electrically connected to the third port connected, the first end of the fourth filter is electrically connected to the second port, and the second end of the fourth filter is electrically connected to the third port; and the third filter can be used to filter frequencies other than 2496MHz to 2690MHz processing, and can cover frequency bands such as B41/N 41; the fourth filter is used to filter frequencies other than 1710MHz to 2170MHz, and can cover frequency bands such as B3/B39, so that the RF circuit can achieve B3/B39+N41 RF switching requirements.
  • the stationary end of the second switch 34 when the stationary end of the second switch 34 is connected to the second movable end of the second switch 34, and the stationary end of the third switch 35 is communicated with the first movable end of the fourth switch 35, that is, the first
  • the second end of the three radio frequency modules 23 can be directly electrically connected to the second end of the third switch assembly 43 through the second switch 34 and the third switch 35 ;
  • One moving end is connected, and when the stationary end of the third switch 35 is connected to the second moving end of the fourth switch 35, that is, the second end of the third radio frequency module 23 can pass through the fourth filter to communicate with the third switch
  • the second end of the assembly 43 is electrically connected.
  • the stationary end of the second switch 34 is connected to the second movable end of the second switch 34, and the stationary end of the third switch 35 is communicated with the first movable end of the fourth switch 35, it is also possible to It is avoided that the radio frequency signal received by the first antenna 51 is transmitted to the third radio frequency module 23 through the fourth filter, and the transmission loss of the radio frequency signal in the fourth filter can be reduced, and the requirement of LTE four-antenna switching can be met.
  • the second switch 34 and the third switch 35 may be single-pole double-throw switches.
  • the combining module 30 includes a third combiner 36 and a fourth switch 37, wherein:
  • the first end of the fourth switch 37 is electrically connected to the first port, the second end of the fourth switch 37 is electrically connected to the second end of the third combiner 36 , and the third end of the fourth switch 37 is electrically connected to the third combiner
  • the third end of the combiner 36 is electrically connected, the fourth end of the fourth switch 37 is electrically connected to the third port, and the first end of the third combiner 36 is electrically connected to the first port;
  • the fourth switch 37 When the fourth switch 37 is in the first switching state, the first end of the fourth switch 37 is connected to the second end of the fourth switch 37 , and the third end of the fourth switch 37 is connected to the fourth end of the fourth switch 37 connected;
  • the fourth switch 37 When the fourth switch 37 is in the second switching state, the first end of the fourth switch 37 is connected to the fourth end of the fourth switch 37 , and the third end of the fourth switch 37 is connected to the fourth end of the fourth switch 37 is disconnected.
  • the third combiner 36 includes a fifth filter and a sixth filter, the first end of the fifth filter is electrically connected to the first port, and the second end of the fifth filter is electrically connected to the third port connected, the first end of the sixth filter is electrically connected to the second port, and the second end of the sixth filter is electrically connected to the third port; and the fifth filter can be used to filter frequencies other than 2496MHz to 2690MHz processing, and can cover frequency bands such as B41/N 41; the sixth filter is used to filter frequencies other than 1710MHz to 2170MHz, and can cover frequency bands such as B3/B39, so that the RF circuit can achieve B3/B39+N41 RF switching requirements.
  • the fourth switch 37 can achieve the same effect as the second switch 34 and the third switch 35 in FIG. 3 , and details are not described herein again.
  • the first switch assembly 41 includes a fifth switch 411 and a sixth switch 412 ; the second end of the first radio frequency module 21 is electrically connected to the first moving end of the sixth switch 412 through the fifth switch 411 , and the first The second terminals of the two radio frequency modules 22 are electrically connected to the second movable terminal of the sixth switch 412 , and the stationary terminal of the sixth switch 412 is electrically connected to the first port.
  • the fifth switch 411 may be a single-pole, four-throw switch, and the first radio frequency module 21 may be electrically connected to the first antenna 51 or the second antenna 52 or the third antenna 53 or the fifth antenna 55 through the fifth switch 411 , so as to realize the N41 radio frequency signal transmission in turn;
  • the sixth switch 412 may be a single-pole double-throw switch for switching the electrical connection between the first radio frequency module 21 and the second radio frequency module and the first port.
  • the first stationary end of the first switch assembly 41 is electrically connected to the second end of the first radio frequency module 21
  • the second stationary end of the first switch assembly 41 is electrically connected to the second end of the second radio frequency module 22 .
  • the terminals are electrically connected, and the first movable terminal of the first switch assembly 41 is electrically connected to the first port;
  • the second end of the first radio frequency module 21 is communicated with the first port;
  • the second non-moving end of 41 is in communication with the first movable end of the first switch assembly 41
  • the second end of the second radio frequency module 22 is in communication with the first port.
  • the first switch component 41 may be a double-pole four-throw switch, so that the first radio frequency module 21 can communicate with the first antenna 51 or the second antenna 52 or the third antenna 53 or the fifth antenna through the first switch component 41 55 is electrically connected, so as to realize the rotation of the N41 radio frequency signal; the first switch component 41 can also be used to switch the electrical connection between the first radio frequency module 21 and the second radio frequency module and the first port.
  • the structure of the combining module 30 can be further simplified by optimizing the frequency range of the combining module 30 .
  • the radio frequency circuit can cover frequency bands such as B1/B2/B3/B34/B39/B40, as well as cover B41/B38/ N41/B7 frequency band; among them, B7RX: 2620MHz ⁇ 2690MHz.
  • the switching state of the radio frequency circuit is shown in Figure 7 or Figure 8; when the radio frequency circuit works in B7/B41, the switching state of the radio frequency circuit is shown in Figure 9 or Figure 8 10; when the radio frequency circuit works in the ENDC scene of B3+N41 or B39+N41, the switch state of the radio frequency circuit is shown in FIG. 11 or FIG. 12, and the first switch component 41 is used as the SRS (detection reference signal, Sounding Reference Signal) switch is used, and it is switched in the round-robin time slot of N41.
  • SRS detection reference signal, Sounding Reference Signal
  • An embodiment of the present application further provides an electronic device, including the above-mentioned radio frequency circuit.
  • radio frequency circuit embodiment is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, which is not repeated here.

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Abstract

本申请公开了一种射频电路及电子设备，该射频电路包括：射频收发器、第一射频模块、第二射频模块、第三射频模块、合路模组、第一开关组件和第一天线，射频收发器分别电连接第一射频模块的第一端、第二射频模块的第一端以及第三射频模块的第一端；合路模组的第一端口通过第一开关组件可与第一射频模块的第二端或第二射频模块的第二端电连接，合路模组的第二端口与第三射频模块的第二端电连接，合路模组的第三端口与第一天线电连接；在第一天线接收到第一射频信号和第二射频信号的情况下，合路模组用于将第一射频信号传输至第三射频模块，以及用于将第二射频信号传输至第一射频模块或第二射频模块。

Description

射频电路及电子设备
相关申请的交叉引用
本申请主张在2021年01月21日在中国提交的中国专利申请No.202110081291.1的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于天线技术领域，具体涉及一种射频电路及电子设备。
背景技术
目前，ENDC(长期演进和新空口双连接，Eutra NR Dual Connectivity)场景下，为满足LTE(长期演进型，Long Term Evolution)与NR(新空口，New Radio)在信号路径配置和天线路径配置互不冲突，手机等电子设备一般采用6天线设计方案，且在6天线设计方案中，LTE分集接收和NR分集接收分别对应一个天线。然而，随着手机等电子设备集成的功能越来越多，电子设备上可供安装天线的空间也越来越小；而且，天线数量越多，对电子设备的外观牺牲越大。
可见，在ENDC场景下，射频电路所需的天线存在数量多的问题。
发明内容
本申请旨在提供一种射频电路及电子设备，能够解决在ENDC场景下，射频电路所需的天线存在数量多的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提出了一种射频电路，应用于长期演进和新空口双连接ENDC场景，包括：
射频收发器、第一射频模块、第二射频模块、第三射频模块、合路模组、第一开关组件和第一天线，其中，
所述射频收发器分别电连接所述第一射频模块的第一端、所述第二射 频模块的第一端以及所述第三射频模块的第一端；
所述合路模组的第一端口通过所述第一开关组件可与第一射频模块的第二端或所述第二射频模块的第二端电连接，所述合路模组的第二端口与所述第三射频模块的第二端电连接，所述合路模组的第三端口与所述第一天线电连接；
其中，在所述第一天线接收到第一射频信号和第二射频信号的情况下，所述合路模组用于将所述第一射频信号传输至所述第三射频模块，以及用于将所述第二射频信号传输至所述第一射频模块或所述第三射频模块。
第二方面，本申请实施例提出了一种电子设备，包括第一方面所述的射频电路。
在本申请的实施例中，在ENDC应用场景下，通过设置合路模组，这样在第一天线接收到第一射频信号和第二射频信号的情况下，合路模组可以将第一射频信号传输至第三射频模块，合路模组还可以将第二射频信号传输至第一射频模块或第二射频模块，以实现第一射频信号和第二射频信号的接收，避免了第一射频信号和第二射频信号在接收过程中发生干涉，从而有效的改善了天线的收发效果。而且，合路模组的设置，实现了第一天线可以同时接收两路射频信号，即少设置一个天线也可以实现射频电路的收发功能，从而达到了减少射频电路的天线数量的目的。
而且，由于合路模组的设置，使第一天线可以同时接收两路射频信号，且该两路射频信号之间不会发生干涉；因此，本申请中的射频电路设置5个天线也可以实现ENDC场景下射频电路的收发功能，相较于现有技术中需要设置6个天线，有效的减少了射频电路的天线数量。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描 述中将变得明显和容易理解，其中：
图1是本申请实施例提供的射频电路的结构图之一；
图2是本申请实施例提供的合路模组的结构图之一；
图3是本申请实施例提供的合路模组的结构图之二；
图4是本申请实施例提供的合路模组的结构图之三；
图5是本申请实施例提供的射频电路的结构图之二；
图6是本申请实施例提供的射频电路的结构图之三；
图7是本申请实施例提供的射频电路的结构图之四；
图8是本申请实施例提供的射频电路的结构图之五；
图9是本申请实施例提供的射频电路的结构图之六；
图10是本申请实施例提供的射频电路的结构图之七；
图11是本申请实施例提供的射频电路的结构图之八；
图12是本申请实施例提供的射频电路的结构图之九。
具体实施方式
下面将详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
如图1所示，本申请实施例提供一种射频电路，该射频电路可以应用 于ENDC场景，且该射频电路包括：
射频收发器10、第一射频模块21、第二射频模块22、第三射频模块23、合路模组30、第一开关组件41和第一天线51，其中，
射频收发器10分别电连接第一射频模块21的第一端、第二射频模块22的第一端以及第三射频模块23的第一端；
合路模组30的第一端口通过第一开关组件41可与第一射频模块21的第二端或第二射频模块22的第二端电连接，合路模块30的第二端口与第三射频模块23的第二端电连接，合路模组30的第三端口与第一天线51电连接；
其中，在第一天线51接收到第一射频信号和第二射频信号的情况下，合路模组30用于将第一射频信号传输至第三射频模块23，以及用于将第二射频信号传输至第一射频模块21或第二射频模块22。
本实施方式中，在ENDC应用场景下，通过设置合路模组30，这样在第一天线51接收到第一射频信号和第二射频信号的情况下，合路模组30可以将第一射频信号传输至第三射频模块23，合路模组30还可以将第二射频信号传输至第一射频模块21或第二射频模块22，以实现第一射频信号和第二射频信号的接收，避免了第一射频信号和第二射频信号在接收过程中发生干涉，从而有效的改善了天线的收发效果。而且，合路模组30的设置，实现了第一天线51可以同时接收两路射频信号，即少设置一个天线也可以实现射频电路的收发功能，从而达到了减少射频电路的天线数量的目的。
而且，由于合路模组30的设置，使第一天线51可以同时接收两路射频信号，且该两路射频信号之间不会发生干涉；因此，本申请中的射频电路设置5个天线也可以实现ENDC场景下射频电路的收发功能，相较于现有技术中需要设置6个天线，有效的减少了射频电路的天线数量。
如图1所示，在5天线架构的射频电路中，射频电路还包括第二天线52、第三天线53、第四天线54、第五天线55、第四射频模块24、第五射 频模块25、第六射频模块26、第七射频模块27、第八射频模块28、第二开关组件42、第三开关组件43、第四开关组件44和第五开关组件45；
第四射频模块24的第一端与射频收发器10电连接，第四射频模块24的第二端与第二开关组件42的第一动端电连接；
第五射频模块25的第一端与射频收发器10电连接，第五射频模块25的第二端与第二开关组件42的第二动端电连接；
第六射频模块26的第一端与射频收发器10电连接，第六射频模块26的第二端与第三开关组件43的第一端电连接；
第七射频模块27的第一端与射频收发器10电连接，第七射频模块27的第二端与第四开关组件44的第一动端电连接；
第八射频模块28的第一端与射频收发器10电连接，第八射频模块28的第二端与第四开关组件44的第二动端电连接；
合路模组30的第三端口与第三开关组件43的第二端电连接；
第一射频模块21可通过第一开关组件41与第二开关组件42的第三动端电连接，第一射频模块21可通过第一开关组件41与第四开关组件44的第三动端电连接，第一射频模块21还可通过第一开关组件41与第五天线55电连接；
第三开关组件43的第三端与第四开关组件44的不动端电连接，第三开关组件43的第四端与第五开关组件45的第一端电连接，第三开关组件43的第五端与第四天线54电连接，第三开关组件43的第六端与第一天线51电连接；
第五开关组件45的第二端与第二开关组件42的不动端电连接，第五开关组件45的第三端与第三天线53电连接，第五开关组件45的第四端与第二天线52电连接。
其中，第二开关组件42可以是单刀四掷开关，且其第四动端空悬设置；第三开关组件43可以是三刀三掷开关；第四开关组件44可以是单刀四掷开关，且其第四动端空悬设置；第五开关组件45可以是双刀双掷开关。
另外，第二开关组件42和第四开关组件44也可以是单刀三掷开关。
在上述射频电路中，通过合路模组30的设置，在射频信号的轮发过程中，第三开关组件43的逻辑状态不会发生变化，进而可以保证LTE信号通路不会出现被动切换的场景，从而实现了设置5个天线也可以实现ENDC场景下射频电路的收发功能。
可选地，第一射频信号为LTE射频信号，第二射频信号为N41射频信号。
一实施方式中，在第四射频模块24的第二端通过第二开关组件42和第五开关组件45与第二天线52电连接的情况下，第二天线52用于进行LTE分集接收；在第五射频模块25的第二端通过第二开关组件42和第五开关组件45与第二天线52电连接的情况下，第二天线52用于进行LTE分集接收或N41分集接收；在第六射频模块26的第二端通过第三开关组件43与第四天线54电连接的情况下，第四天线54用于进行LTE射频发射或接收；在第七射频模块27的第二端通过第三开关组件43和第五开关组件45与第三天线53电连接的情况下，第三天线53用于进行LTE主集接收；在第八射频模块28的第二端通过第三开关组件43和第五开关组件45与第三天线53电连接的情况下，第三天线53用于进行LTE主集接收或N41主集接收。
另外，第一射频模块21的第二端可通过第一开关组件41、第二开关组件42、第三开关组件43、第四开关组件44、第五开关组件45以及合路模组30与第一天线51或第二天线52或第三天线53或第五天线55电连接，进而实现N41射频信号的轮发。
相应地，在第二射频模块22的第二端通过合路模组30和第三开关组件43与第一天线51电连接的情况下，第一天线51用于进行N41分集接收；在第三射频模块23的第二端通过合路模组30和第三开关组件43与第一天线51电连接的情况下，第一天线51进行LTE分集接收。
如图2所示，合路模组30包括第一合路器31和第一开关32，第一合 路器31的第一端与第一端口电连接，第一合路器31的第二端与第二端口电连接，第一合路器31的第三端与第三端口电连接；第一开关32的第一端与第二端口电连接，第一开关32的第二端与第三端口电连接。
本实施方式中，第一合路器31包括第一滤波器和第二滤波器，第一滤波器的第一端与第一端口电连接，第一滤波器的第二端与第三端口电连接，第二滤波器的第一端与第二端口电连接，第二滤波器的第二端与第三端口电连接；而且，第一滤波器可用于对2496MHz～2690MHz之外的频率进行滤波处理，并可覆盖B41/N 41等频段；第二滤波器用于对1710MHz～2170MHz之外的频率进行滤波处理，并可覆盖B3/B39等频段，以使射频电路能够实现B3/B39+N41的射频切换需求。
其中，在第一开关32处于导通状态的情况下，第二滤波器处于短路状态，第三射频模块23直接通过第三开关组件43与第一天线51电连接；在第一开关32处于断开状态的情况下，第三射频模块23通过第二滤波器及第三开关组件43与第一天线51电连接。
而且，在单LTE场景状态下，通过控制第一开关32处于导通状态，还可以避免第一天线51接收到的射频信号通过第二滤波器传输至第三射频模块23，并可以减少射频信号在第二滤波器中传输的损失，并满足LTE四天线切换的需求。
另外，还可以将第一合路器31和第一开关32集成设置，以简化射频电路的电路连接。
如图3所示，合路模块30包括第二合路器33、第二开关34和第三开关35，其中，第二开关34的不动端与第二端口电连接，第二开关34的第一动端与第二合路器33的第二端电连接，第二开关34的第二动端与第三开关35的第一动端电连接，第三开关35的第二动端与第二合路器33的第三端电连接，第三开关35的不动端与第三端口电连接，第二合路器33的第一端与第一端口电连接。
本实施方式中，第二合路器33包括第三滤波器和第四滤波器，第三滤 波器的第一端与第一端口电连接，第三滤波器的第二端与第三端口电连接，第四滤波器的第一端与第二端口电连接，第四滤波器的第二端与第三端口电连接；而且，第三滤波器可用于对2496MHz～2690MHz之外的频率进行滤波处理，并可覆盖B41/N 41等频段；第四滤波器用于对1710MHz～2170MHz之外的频率进行滤波处理，并可覆盖B3/B39等频段，以使射频电路能够实现B3/B39+N41的射频切换需求。
其中，在第二开关34的不动端与第二开关34的第二动端连通，且在第三开关35的不动端与第四开关35的第一动端连通的情况下，即第三射频模块23的第二端可通过第二开关34和第三开关35直接与第三开关组件43的第二端电连接；而在第二开关34的不动端与第二开关34的第一动端连通，且在第三开关35的不动端与第四开关35的第二动端连通的情况下，即第三射频模块23的第二端可通过第四滤波器与第三开关组件43的第二端电连接。
而且，在第二开关34的不动端与第二开关34的第二动端连通，且在第三开关35的不动端与第四开关35的第一动端连通的情况下，还可以避免第一天线51接收到的射频信号通过第四滤波器传输至第三射频模块23，并可以减少射频信号在第四滤波器中传输的损失，并满足LTE四天线切换的需求。
其中，第二开关34和第三开关35可以是单刀双掷开关。
如图4所示，合路模组30包括第三合路器36和第四开关37，其中：
第四开关37的第一端与第一端口电连接，第四开关37的第二端与第三合路器36的第二端电连接，第四开关37的第三端与第三合路器36的第三端电连接，第四开关37的第四端与第三端口电连接，第三合路器36的第一端与第一端口电连接；
在第四开关37处于第一切换状态的情况下，第四开关37的第一端与第四开关37的第二端连通，第四开关37的第三端与第四开关37的第四端连通；
在第四开关37处于第二切换状态的情况下，第四开关37的第一端与第四开关37的第四端连通，第四开关37的第三端与第四开关37的第四端处于断开状态。
本实施方式中，第三合路器36包括第五滤波器和第六滤波器，第五滤波器的第一端与第一端口电连接，第五滤波器的第二端与第三端口电连接，第六滤波器的第一端与第二端口电连接，第六滤波器的第二端与第三端口电连接；而且，第五滤波器可用于对2496MHz～2690MHz之外的频率进行滤波处理，并可覆盖B41/N 41等频段；第六滤波器用于对1710MHz～2170MHz之外的频率进行滤波处理，并可覆盖B3/B39等频段，以使射频电路能够实现B3/B39+N41的射频切换需求。
而且，本实施方式中，第四开关37能够达到图3中的第二开关34和第三开关35相同的效果，在此不再赘述。
如图5所示，第一开关组件41包括第五开关411和第六开关412；第一射频模块21的第二端通过第五开关411与第六开关412的第一动端电连接，第二射频模块22的第二端与第六开关412的第二动端电连接，第六开关412的不动端与第一端口电连接。
本实施方式中，第五开关411可以是单刀四掷开关，且第一射频模块21可通过第五开关411与第一天线51或第二天线52或第三天线53或第五天线55电连接，进而实现N41射频信号的轮发；第六开关412可以是单刀双掷开关，用于切换第一射频模块21和第二射频模块与第一端口的电连接。
如图6所示，第一开关组件41的第一不动端与第一射频模块21的第二端电连接，第一开关组件41的第二不动端与第二射频模块22的第二端电连接，第一开关组件41的第一动端与第一端口电连接；
其中，在第一开关组件41的第一不动端与第一开关组件41的第一动端连通的情况下，第一射频模块21的第二端与第一端口连通；在第一开关组件41的第二不动端与第一开关组件41的第一动端连通的情况下，第 二射频模块22的第二端与第一端口连通。
本实施方式中，第一开关组件41可以是双刀四掷开关，使得第一射频模块21可通过第一开关组件41与第一天线51或第二天线52或第三天线53或第五天线55电连接，进而实现N41射频信号的轮发；也可以通过第一开关组件41实现切换第一射频模块21和第二射频模块与第一端口的电连接。
另外，还可以通过优化合路模组30的频段范围，进一步简化合路模组30的结构。
一实施例中，在合路模组30的频率范围为1710MHz～2400MHz及2496MHz～2690MHz的情况下，射频电路可以覆盖B1/B2/B3/B34/B39/B40等频段，以及覆盖B41/B38/N41/B7频段；其中，B7RX:2620MHz～2690MHz。
而且，通过采用频率范围为1710MHz～2400MHz及2496MHz～2690MHz的合路模组的情况下，合路模组中无需设置切换开关，仅需设置合路器，进而到达了简化合路模组结构的目的。
其中，在射频电路工作在B1/B3的情况下，射频电路的开关状态如图7或图8所示；在射频电路工作在B7/B41的情况下，射频电路的开关状态如图9或图10所示；在射频电路工作在B3+N41或B39+N41的ENDC场景的情况下，射频电路的开关状态如图11或图12所示，且第一开关组件41作为SRS(探测参考信号，Sounding Reference Signal)开关使用，并在N41的轮发时隙切换。
本申请实施例还提供一种电子设备，包括上述射频电路。
需要说明的是，上述射频电路实施例的实现方式同样适应于该电子设备的实施例中，并能达到相同的技术效果，在此不再赘述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实 施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (9)

  1. 一种射频电路，应用于长期演进和新空口双连接ENDC场景，包括：
    射频收发器、第一射频模块、第二射频模块、第三射频模块、合路模组、第一开关组件和第一天线，其中，
    所述射频收发器分别电连接所述第一射频模块的第一端、所述第二射频模块的第一端以及所述第三射频模块的第一端；
    所述合路模组的第一端口通过所述第一开关组件可与第一射频模块的第二端或所述第二射频模块的第二端电连接，所述合路模组的第二端口与所述第三射频模块的第二端电连接，所述合路模组的第三端口与所述第一天线电连接；
    其中，在所述第一天线接收到第一射频信号和第二射频信号的情况下，所述合路模组用于将所述第一射频信号传输至所述第三射频模块，以及用于将所述第二射频信号传输至所述第一射频模块或所述第三射频模块。
  2. 根据权利要求1所述的射频电路，其中，所述合路模组包括第一合路器和第一开关，其中，
    所述第一合路器的第一端与所述第一端口电连接，所述第一合路器的第二端与所述第二端口电连接，所述第一合路器的第三端与所述第三端口电连接；
    所述第一开关的第一端与所述第二端口电连接，所述第一开关的第二端与所述第三端口电连接。
  3. 根据权利要求2所述的射频电路，其中，所述第一合路器与所述第一开关集成设置。
  4. 根据权利要求1所述的射频电路，其中，所述合路模组包括第二合路器、第二开关和第三开关，其中，
    所述第二开关的不动端与所述第二端口电连接，所述第二开关的第一 动端与所述第二合路器的第二端电连接，所述第二开关的第二动端与所述第三开关的第一动端电连接，所述第三开关的第二动端与所述第二合路器的第三端电连接，所述第三开关的不动端与所述第三端口电连接，所述第二合路器的第一端与所述第一端口电连接。
  5. 根据权利要求1所述的射频电路，其中，所述合路模组包括第三合路器和第四开关，其中，
    所述第四开关的第一端与所述第一端口电连接，所述第四开关的第二端与所述第三合路器的第二端电连接，所述第四开关的第三端与所述第三合路器的第三端电连接，所述第四开关的第四端与所述第三端口电连接，所述第三合路器的第一端与所述第一端口电连接；
    在所述第四开关处于第一切换状态的情况下，所述第四开关的第一端与所述第四开关的第二端连通，所述第四开关的第三端与所述第四开关的第四端连通；
    在所述第四开关处于第二切换状态的情况下，所述第四开关的第一端与所述第四开关的第四端连通，所述第四开关的第三端与所述第四开关的第四端处于断开状态。
  6. 根据权利要求1至5中任一项所述的射频电路，其中，所述第一开关组件包括第五开关和第六开关；
    所述第一射频模块的第二端通过所述第五开关与所述第六开关的第一动端电连接，所述第二射频模块的第二端与所述第六开关的第二动端电连接，所述第六开关的不动端与所述第一端口电连接。
  7. 根据权利要求1至5中任一项所述的射频电路，其中，所述第一开关组件的第一不动端与所述第一射频模块的第二端电连接，所述第一开关组件的第二不动端与所述第二射频模块的第二端电连接，所述第一开关组件的第一动端与所述第一端口电连接；
    其中，在所述第一开关组件的第一不动端与所述第一开关组件的第一动端连通的情况下，所述第一射频模块的第二端与所述第一端口连通；在 所述第一开关组件的第二不动端与所述第一开关组件的第一动端连通的情况下，所述第二射频模块的第二端与所述第一端口连通。
  8. 根据权利要求1至5中任一项所述的射频电路，其中，所述第一射频信号为长期演进型LTE射频信号，所述第二射频信号为N41射频信号。
  9. 一种电子设备，包括如权利要求1至8中任一项所述的射频电路。
PCT/CN2022/071959 2021-01-21 2022-01-14 射频电路及电子设备 WO2022156599A1 (zh)

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