WO2021031713A1 - Radio frequency front-end circuit and mobile terminal - Google Patents

Radio frequency front-end circuit and mobile terminal Download PDF

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Publication number
WO2021031713A1
WO2021031713A1 PCT/CN2020/100191 CN2020100191W WO2021031713A1 WO 2021031713 A1 WO2021031713 A1 WO 2021031713A1 CN 2020100191 W CN2020100191 W CN 2020100191W WO 2021031713 A1 WO2021031713 A1 WO 2021031713A1
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WO
WIPO (PCT)
Prior art keywords
pole
throw switch
double
switch
radio frequency
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PCT/CN2020/100191
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French (fr)
Chinese (zh)
Inventor
卢智敏
盛雪锋
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维沃移动通信有限公司
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Publication of WO2021031713A1 publication Critical patent/WO2021031713A1/en

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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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • 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 embodiments of the present disclosure relate to the field of communication technology, and in particular to a radio frequency front-end circuit and a mobile terminal.
  • FIG. 1 it is a schematic diagram of the structure of the radio frequency front-end circuit of the 5G mobile terminal equipment.
  • the circuit architecture can realize two transmitting and four receiving, that is, two transmitting paths and four receiving paths.
  • the layout and wiring of 5G mobile terminal equipment will directly affect the path insertion loss (the longer the wiring length, the higher the insertion loss), as shown by the two dotted lines in Figure 1, the 5G mobile terminal equipment in the related technology
  • the RF front-end circuit has a long wiring, which leads to high path insertion loss.
  • the RF front-end circuit of 5G mobile terminal equipment in the related art often uses multiple three-pole three-throw switches.
  • the embodiments of the present disclosure provide a radio frequency front-end circuit and a mobile terminal to solve the problems of large insertion loss and complex circuit design of the radio frequency front-end circuit structure of 5G mobile terminal equipment in the related art.
  • a radio frequency front-end circuit which is characterized in that it includes:
  • a double-pole double-throw switch the first movable end of the double-pole double-throw switch is connected to the first transmitting path and the first receiving path through a first switch, and the second The movable end is connected to the second receiving path; the first fixed end or the second fixed end of the double-pole double-throw switch is connected to the first antenna;
  • a three-pole three-throw switch the first movable end of the three-pole three-throw switch is electrically connected to the fixed end of the first and second fixed ends of the double-pole double-throw switch that is not connected to the first antenna ,
  • the second movable end of the three-pole three-throw switch is connected to the third receiving path, and the third movable end of the three-pole three-throw switch is connected to the fourth receiving path;
  • the three-pole three-throw switch The first fixed end is connected to the second antenna, the second fixed end is connected to the third antenna, and the third fixed end is connected to the fourth antenna.
  • a mobile terminal including: a controller and the above-mentioned radio frequency front-end circuit;
  • controller is used to control the opening and closing of the double pole double throw switch, the triple pole triple throw switch, and the switching of the first switch.
  • the radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch.
  • the radio frequency front-end circuit in the embodiment of the present disclosure has more compact circuit deployment, shorter line paths, and reduced line insertion loss, and the radio frequency front-end circuit in the embodiment of the present disclosure has simpler line connections and reduces the complexity of circuit design .
  • the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch. Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss.
  • the isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
  • Figure 1 shows a schematic diagram of a radio frequency front-end circuit architecture in the related art
  • FIG. 2 shows one of the schematic structural diagrams of the radio frequency front-end circuit architecture provided by an embodiment of the present disclosure
  • FIG. 3 shows the second structural diagram of a radio frequency front-end circuit architecture provided by an embodiment of the present disclosure
  • FIG. 4 shows the third structural diagram of a radio frequency front-end circuit architecture provided by an embodiment of the present disclosure
  • FIG. 5 shows the fourth structural diagram of the radio frequency front-end circuit architecture provided by an embodiment of the present disclosure.
  • a radio frequency front-end circuit structure is provided.
  • the RF front-end circuit includes: a first transmitting path 1, a first receiving path 2, a second receiving path 3, a third receiving path 4, a fourth receiving path 5, a double-pole double-throw switch 6.
  • a first transmitting path 1 a first receiving path 2
  • a second receiving path 3 a third receiving path 4
  • a fourth receiving path 5 a double-pole double-throw switch 6.
  • first movable end 601 of the double-pole double-throw switch 6 is respectively connected to the first transmitting path 1 and the first receiving path 2 through the first switch 8.
  • the second movable end 602 of the double-pole double-throw switch 6 is connected to the second receiving path 3.
  • the first fixed terminal 603 or the second fixed terminal 604 of the double-pole double-throw switch 6 is connected to the first antenna 9.
  • the first movable end 701 of the three-pole three-throw switch 7 is electrically connected to the fixed end of the first fixed end 603 and the second fixed end 604 of the double-pole double throw switch 6 that is not connected to the first antenna 9.
  • the first fixed terminal 603 of the double-pole double-throw switch 6 is connected to the first antenna 9
  • the first movable terminal 701 of the three-pole three-throw switch 7 is connected to the second fixed terminal of the double-pole double-throw switch 6.
  • Terminal 604 is electrically connected; as shown in Figure 3, the second fixed terminal 604 of the double-pole double-throw switch 6 is connected to the first antenna 9, then the first movable terminal 701 of the three-pole three-throw switch 7 is connected to the double-pole double-throw switch
  • the first fixed terminal 603 of 6 is electrically connected.
  • the second movable end 702 of the three-pole three-throw switch 7 is connected to the third receiving path 4.
  • the third movable end 703 of the three-pole three-throw switch 7 is connected to the fourth receiving path 5.
  • the first fixed end 704 of the three-pole three-throw switch 7 is connected to the second antenna 10, the second fixed end is connected to the third antenna 11, and the third fixed end is connected to the fourth antenna 12.
  • the blades on any one of the first movable end and the second movable end can be switched to the first fixed end or the second fixed end.
  • the blade on any one of the first movable end, the second movable end, and the third movable end can be switched to the first fixed end, the second fixed end or On the third fixed end.
  • the first transmission path 1 can transmit signals via the first switch 8, double pole double throw switch 6, and the first antenna 9, or via the first switch 8, double pole double throw switch 6.
  • the three-pole three-throw switch 7 transmits signals through the second antenna 10, the third antenna 11, or the fourth antenna 12.
  • the first receiving path 2 can receive information via the first antenna 9, via the double-pole double-throw switch 6 and the first switch 8, or via the second antenna 10, the third antenna 11, or the second antenna.
  • the four antenna 12 receives signals via the three-pole three-throw switch 7, the double-pole double-throw switch 6, and the first switch 8.
  • the second receiving path 3 can receive information via the first antenna 9, via the double-pole double-throw switch 6, or via the second antenna 10, the third antenna 11, or the fourth antenna 12, via the three antennas.
  • the pole three throw switch 7 and the double pole double throw switch 6 receive signals.
  • the third receiving path 4 and the fourth receiving path 5 can receive signals via the second antenna 10, the third antenna 11 or the fourth antenna 12 and the three-pole three-throw switch 7.
  • the radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch.
  • the double-pole double-throw switch Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss.
  • the isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
  • the first transmission path 1 at least includes: a first power amplifier 101 connected to the first fixed terminal 801 of the first switch 8.
  • the first receiving path 2 includes at least: a first low noise amplifier 201 connected to the second fixed terminal 802 of the first switch 8.
  • the movable end 803 of the first changeover switch 8 is connected to the first movable end 601 of the double pole double throw switch 6.
  • the first transmission path 1 can transmit a signal; when the blade on the movable end 803 of the first switch 8 When switching to the second fixed terminal 802 of the first switch 8, the first receiving path 2 can receive signals.
  • the first transmission path 1 can transmit signals through the first antenna 9, and the first reception path 2 can receive signals through the first antenna 9.
  • the blade of the second movable end 602 of the double-pole double-throw switch 6 When connected to the first movable end 701 of the three-pole three-throw switch 7, if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, Then the first transmitting path 1 can transmit signals through the second antenna 10, and the first receiving path 2 can receive signals through the second antenna 10; if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to three-pole three-throw The second fixed end 705 of the switch 7, the first transmitting path 1 can transmit signals through the third antenna 11, and the first receiving path 2 can receive signals through the third antenna 11; if the first movable end of the three-pole three-throw
  • the radio frequency front-end circuit further includes: a first filter 13.
  • the first filter 13 is arranged between the first switch 8 and the double-pole double-throw switch 6. Specifically, the first filter 13 is connected to the movable end 803 of the first switch 8 and the double-pole double-throw switch 6 respectively. The first movable end 601 is connected.
  • the second receiving path 3 includes at least: a second low noise amplifier 301 connected to the second movable end 602 of the double-pole double-throw switch 6.
  • the second receiving path 3 can receive signals through the first antenna 9.
  • the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the second fixed end 604 of the double-pole double-throw switch 6, and is connected to the first movable end 701 of the three-pole three-throw switch 7, if the The blade of the first movable end 701 of the throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, the second receiving path 3 can receive the signal through the second antenna 10;
  • the blade of a movable end 701 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the second receiving path 3 can receive the signal through the third antenna 11; if the first movable end 701 of the three-pole three-throw switch 7 is The blade is switched to the third fixed end of the
  • the radio frequency front-end circuit further includes: a second filter 14.
  • the second filter 14 is arranged between the second low noise amplifier 301 and the double pole double throw switch 6. Specifically, the second filter 14 is connected to the second low noise amplifier 301 and the second double pole double throw switch 6 respectively. The movable end 602 is connected.
  • the radio frequency front-end circuit further includes: a second transmission path 15 to realize two transmissions and four receptions, that is, two transmissions and four receptions.
  • the second transmitting path 15 and the second receiving path 3 are respectively connected to the second movable end 602 of the double-pole double-throw switch 6 through the second switch 16 and the second filter 14.
  • the second filter 14 is respectively connected to the movable end 1603 of the second switch 16 and the second movable end 602 of the double-pole double-throw switch 6.
  • the second transmission path 15 can transmit a signal; when the movable end 1603 of the second switch 16 is When the blade of is switched to the second fixed terminal 1602 of the second switch 16, the second receiving path 3 can receive signals.
  • the blade of the second movable end 602 of the double-pole double-throw switch 6 When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the first fixed end 603 (corresponding to the circuit shown in FIG. 4) or the second fixed end 604 (corresponding to the circuit shown in FIG. When the circuit shown), the second transmitting path 15 can transmit signals through the first antenna 9 and the second receiving path 3 can receive signals through the first antenna 9.
  • the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the second fixed end 604 (corresponding to the circuit shown in FIG. 4) or the first fixed end 603 (corresponding to the circuit shown in FIG.
  • the second transmitting path 15 can transmit signals through the second antenna 10, and the second receiving path 3 can receive signals through the second antenna 10; if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to three-pole three-throw
  • the second fixed terminal 705 of the switch 7, the second transmitting path 15 can transmit signals through the third antenna 11, and the second receiving path 3 can receive signals through the third antenna 11; if the first movable terminal of the three-pole three-throw switch 7
  • the blade of 701 is switched to the third fixed terminal of the three-pole three-throw switch 7, the second transmitting path 15 can transmit signals through the fourth antenna 12, and the second receiving path 3 can receive signals through the fourth antenna 12.
  • the second transmission path 15 includes at least: a second power amplifier 1501 connected to the first fixed terminal 1601 of the second switch 16.
  • the second low noise amplifier 301 in the second receiving path 3 is connected to the second fixed terminal 1602 of the second switch 16.
  • the third receiving path 4 at least includes: a third low noise amplifier 401 connected to the second movable end 702 of the three-pole three-throw switch 7.
  • the third receiving path 4 receives the signal through the second antenna 10;
  • the blade of the second movable end 702 of the throw switch 7 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the third receiving path 4 receives the signal through the third antenna 11;
  • the blade of the movable end 702 is switched to the third fixed end of the three-pole three-throw switch 7, the third receiving path 4 receives the signal through the fourth antenna 12.
  • the radio frequency front-end circuit further includes: a third filter 17.
  • the third filter 17 is disposed between the third low noise amplifier 401 and the three-pole three-throw switch 7. Specifically, the third filter 17 is connected to the third low-noise amplifier 401 and the three-pole three-throw switch 7 respectively.
  • the second movable end 702 is connected.
  • the fourth receiving path 5 at least includes: a fourth low noise amplifier connected to the third movable end 703 of the three-pole three-throw switch 7.
  • the fourth receiving path 5 receives the signal through the second antenna 10;
  • the blade of the third movable end 703 of the throw switch 7 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the fourth receiving path 5 receives the signal through the third antenna 11;
  • the blade of the movable end 703 is switched to the third fixed end of the three-pole three-throw switch 7, the fourth receiving path 5 receives the signal through the fourth antenna 12.
  • the radio frequency front-end circuit further includes: a fourth filter 18.
  • the third filter 17 is disposed between the third low noise amplifier 401 and the three-pole three-throw switch 7. Specifically, the fourth filter 18 is connected to the fourth low-noise amplifier and the three-pole three-throw switch 7 respectively.
  • the third movable end 703 is connected.
  • the radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch.
  • the double-pole double-throw switch Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss.
  • the isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
  • a mobile terminal including: a controller and the radio frequency front-end circuit described in the above-mentioned embodiments.
  • the controller is used to control the switching of the double-pole double-throw switch 6, the three-pole triple-throw switch 7 and the first switch 8.
  • the radio frequency front-end circuit further includes a second transmitting path 15, and the second transmitting path 15 and the second receiving path 3 are connected to the second activity of the double-pole double-throw switch 6 through a second switch 16 At terminal 602, the controller is also used to control the switching of the second switch 16.
  • the radio frequency front-end circuit in the mobile terminal provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch.
  • the double-pole double-throw switch Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss.
  • the isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
  • 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 indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present disclosure, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components.
  • installed may be a fixed connection or a detachable connection , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components.
  • the "above” or “below” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.

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Abstract

Embodiments of the present invention provide a radio frequency front-end circuit and a mobile terminal. The radio frequency front-end circuit comprises: a first transmission path, a first receiving path, a second receiving path, a third receiving path, a fourth receiving path, a double-pole double-throw switch, a three-pole three-throw switch, a first handover switch, a first antenna, a second antenna, a third antenna, and a fourth antenna.

Description

射频前端电路及移动终端Radio frequency front-end circuit and mobile terminal
相关申请的交叉引用Cross references to related applications
本申请主张在2019年8月16日在中国提交的中国专利申请号No.201910757200.4的优先权，其全部内容通过引用包含于此。This application claims the priority of Chinese Patent Application No. 201910757200.4 filed in China on August 16, 2019, the entire content of which is incorporated herein by reference.
技术领域Technical field
本公开实施例涉及通信技术领域，尤其涉及一种射频前端电路及移动终端。The embodiments of the present disclosure relate to the field of communication technology, and in particular to a radio frequency front-end circuit and a mobile terminal.
背景技术Background technique
随着互联网通信技术的快速发展以及智能移动终端的不断普及，用户对数据流量的需求也在不断增加。从4G的传输速率为100Mbps～1Gbps，到5G NR的峰值传输速率可达20Gbps，大大满足了人们对数据传输速率的需求。而速率的提升要求5G必备4*4多输入多输出(Multiple Input Multiple Output，MIMO)关键技术。With the rapid development of Internet communication technology and the continuous popularization of smart mobile terminals, users' demand for data traffic is also increasing. The transmission rate from 4G is 100Mbps to 1Gbps, and the peak transmission rate of 5G NR can reach 20Gbps, which greatly meets people's demand for data transmission rate. The increase in speed requires that 5G must have 4*4 multiple input multiple output (MIMO) key technologies.
如图1所示，为5G移动终端设备的射频前端电路的结构示意图。该电路架构可实现二发四收，即两路发射通路和四路接收通路。其中，5G移动终端设备的布局走线会直接影响到路径插损(走线长度越长，插损越高)，如图1中的两条虚线所示，相关技术中的5G移动终端设备的射频前端电路，其走线长，导致路径插损高。另外，相关技术中的5G移动终端设备的射频前端电路常使用多个三刀三掷开关，由于传输频率越高，频宽越大，元件插损越大，因此三刀三掷开关的使用也增大了使输出功率达到规范的实现难度。因此，如何降低路径插损、元件插损以及降低电路设计的复杂度成为亟待解决的问题。As shown in Figure 1, it is a schematic diagram of the structure of the radio frequency front-end circuit of the 5G mobile terminal equipment. The circuit architecture can realize two transmitting and four receiving, that is, two transmitting paths and four receiving paths. Among them, the layout and wiring of 5G mobile terminal equipment will directly affect the path insertion loss (the longer the wiring length, the higher the insertion loss), as shown by the two dotted lines in Figure 1, the 5G mobile terminal equipment in the related technology The RF front-end circuit has a long wiring, which leads to high path insertion loss. In addition, the RF front-end circuit of 5G mobile terminal equipment in the related art often uses multiple three-pole three-throw switches. Because the higher the transmission frequency, the greater the bandwidth, and the greater the component insertion loss, so the use of three-pole three-throw switches is also Increase the difficulty of achieving the output power to the specification. Therefore, how to reduce the path insertion loss, the component insertion loss, and the complexity of the circuit design becomes an urgent problem to be solved.
发明内容Summary of the invention
本公开实施例提供了一种射频前端电路及移动终端，以解决相关技术中5G移动终端设备的射频前端电路结构插损大、电路设计复杂的问题。The embodiments of the present disclosure provide a radio frequency front-end circuit and a mobile terminal to solve the problems of large insertion loss and complex circuit design of the radio frequency front-end circuit structure of 5G mobile terminal equipment in the related art.
为了解决上述技术问题，本公开采用如下技术方案：In order to solve the above technical problems, the present disclosure adopts the following technical solutions:
第一方面，提供了一种射频前端电路，其特征在于，包括：In a first aspect, a radio frequency front-end circuit is provided, which is characterized in that it includes:
第一发射通路、第一接收通路、第二接收通路、第三接收通路、第四接收通路；A first transmitting path, a first receiving path, a second receiving path, a third receiving path, and a fourth receiving path;
双刀双掷开关，所述双刀双掷开关的第一活动端通过第一切换开关分别连接至所述第一发射通路和所述第一接收通路，所述双刀双掷开关的第二活动端与所述第二接收通路连接；所述双刀双掷开关的第一定端或第二定端连接至第一天线；A double-pole double-throw switch, the first movable end of the double-pole double-throw switch is connected to the first transmitting path and the first receiving path through a first switch, and the second The movable end is connected to the second receiving path; the first fixed end or the second fixed end of the double-pole double-throw switch is connected to the first antenna;
三刀三掷开关，所述三刀三掷开关的第一活动端与所述双刀双掷开关的第一定端和第二定端中未与所述第一天线连接的定端电连接，所述三刀三掷开关的第二活动端与所述第三接收通路连接，所述三刀三掷开关的第三活动端与所述第四接收通路连接；所述三刀三掷开关的第一定端连接至第二天线，第二定端连接至第三天线，第三定端连接至第四天线。A three-pole three-throw switch, the first movable end of the three-pole three-throw switch is electrically connected to the fixed end of the first and second fixed ends of the double-pole double-throw switch that is not connected to the first antenna , The second movable end of the three-pole three-throw switch is connected to the third receiving path, and the third movable end of the three-pole three-throw switch is connected to the fourth receiving path; the three-pole three-throw switch The first fixed end is connected to the second antenna, the second fixed end is connected to the third antenna, and the third fixed end is connected to the fourth antenna.
第二方面，提供了一种移动终端，包括：控制器以及如上所述的射频前端电路；In a second aspect, a mobile terminal is provided, including: a controller and the above-mentioned radio frequency front-end circuit;
其中，所述控制器用于控制所述双刀双掷开关、所述三刀三掷的开闭以及第一切换开关的切换。Wherein, the controller is used to control the opening and closing of the double pole double throw switch, the triple pole triple throw switch, and the switching of the first switch.
本公开实施例中提供的射频前端电路，通过一个双刀双掷开关和一个三刀三掷开关，实现信号收发路径的切换。本公开实施例中的射频前端电路，线路部署更加紧凑，线路路径更短，降低了线路的插损，且本公开实施例中的射频前端电路，线路连接更加简单，降低了电路设计的复杂度。另外，本公开实施例中的射频前端电路，减少了对三刀三掷开关的使用，而双刀双掷开关相比与三刀三掷开关，元件插损更小，因此还降低了元件插损，且双刀双掷开关的隔离度相比三刀三掷开关隔离度更好，因此，还能够更好的隔离发射信号和接收信息，降低发射信号对接收信号的干扰。The radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. The radio frequency front-end circuit in the embodiment of the present disclosure has more compact circuit deployment, shorter line paths, and reduced line insertion loss, and the radio frequency front-end circuit in the embodiment of the present disclosure has simpler line connections and reduces the complexity of circuit design . In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch. Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss. The isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
附图说明Description of the drawings
为了更清楚地说明本公开实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的 前提下，还可以根据这些附图获得其他的附图。In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative labor, other drawings can be obtained from these drawings.
图1表示相关技术中的射频前端电路构架的示意图；Figure 1 shows a schematic diagram of a radio frequency front-end circuit architecture in the related art;
图2表示本公开实施例提供的射频前端电路构架的结构示意图之一；FIG. 2 shows one of the schematic structural diagrams of the radio frequency front-end circuit architecture provided by an embodiment of the present disclosure;
图3表示本公开实施例提供的射频前端电路构架的结构示意图之二；FIG. 3 shows the second structural diagram of a radio frequency front-end circuit architecture provided by an embodiment of the present disclosure;
图4表示本公开实施例提供的射频前端电路构架的结构示意图之三；FIG. 4 shows the third structural diagram of a radio frequency front-end circuit architecture provided by an embodiment of the present disclosure;
图5表示本公开实施例提供的射频前端电路构架的结构示意图之四。FIG. 5 shows the fourth structural diagram of the radio frequency front-end circuit architecture provided by an embodiment of the present disclosure.
具体实施方式detailed description
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
依据本公开实施例的一个方面，提供了一种射频前端电路结构。According to one aspect of the embodiments of the present disclosure, a radio frequency front-end circuit structure is provided.
如图2和图3所示，该射频前端电路包括：第一发射通路1、第一接收通路2、第二接收通路3、第三接收通路4、第四接收通路5、双刀双掷开关6、三刀三掷开关7、第一切换开关8以及第一天线9、第二天线10、第三天线11、第四天线12。As shown in Figures 2 and 3, the RF front-end circuit includes: a first transmitting path 1, a first receiving path 2, a second receiving path 3, a third receiving path 4, a fourth receiving path 5, a double-pole double-throw switch 6. Three-pole three-throw switch 7, first changeover switch 8, first antenna 9, second antenna 10, third antenna 11, and fourth antenna 12.
其中，该双刀双掷开关6的第一活动端601通过第一切换开关8分别连接至第一发射通路1和第一接收通路2。该双刀双掷开关6的第二活动端602与第二接收通路3连接。该双刀双掷开关6的第一定端603或第二定端604连接至第一天线9。Wherein, the first movable end 601 of the double-pole double-throw switch 6 is respectively connected to the first transmitting path 1 and the first receiving path 2 through the first switch 8. The second movable end 602 of the double-pole double-throw switch 6 is connected to the second receiving path 3. The first fixed terminal 603 or the second fixed terminal 604 of the double-pole double-throw switch 6 is connected to the first antenna 9.
其中，该三刀三掷开关7的第一活动端701与双刀双掷开关6的第一定端603和第二定端604中未与第一天线9连接的定端电连接。如图2所示，该双刀双掷开关6的第一定端603连接至第一天线9，则三刀三掷开关7的第一活动端701与双刀双掷开关6的第二定端604电连接；如图3所示，该双刀双掷开关6的第二定端604连接至第一天线9，则三刀三掷开关7的第一活动端701与双刀双掷开关6的第一定端603电连接。该三刀三掷开关7的第二活动端702与第三接收通路4连接。该三刀三掷开关7的第三活动端703与第四接收通路5连接。该三刀三掷开关7的第一定端704连接至第二 天线10，第二定端连接至第三天线11，第三定端连接至第四天线12。Wherein, the first movable end 701 of the three-pole three-throw switch 7 is electrically connected to the fixed end of the first fixed end 603 and the second fixed end 604 of the double-pole double throw switch 6 that is not connected to the first antenna 9. As shown in Figure 2, the first fixed terminal 603 of the double-pole double-throw switch 6 is connected to the first antenna 9, and the first movable terminal 701 of the three-pole three-throw switch 7 is connected to the second fixed terminal of the double-pole double-throw switch 6. Terminal 604 is electrically connected; as shown in Figure 3, the second fixed terminal 604 of the double-pole double-throw switch 6 is connected to the first antenna 9, then the first movable terminal 701 of the three-pole three-throw switch 7 is connected to the double-pole double-throw switch The first fixed terminal 603 of 6 is electrically connected. The second movable end 702 of the three-pole three-throw switch 7 is connected to the third receiving path 4. The third movable end 703 of the three-pole three-throw switch 7 is connected to the fourth receiving path 5. The first fixed end 704 of the three-pole three-throw switch 7 is connected to the second antenna 10, the second fixed end is connected to the third antenna 11, and the third fixed end is connected to the fourth antenna 12.
需要说明的是，对于双刀双掷开关6，其第一活动端和第二活动端中的任意一个活动端上的刀片，均可以切换至第一定端或第二定端上。同理，对于三刀三掷开关7，其第一活动端、第二活动端以及第三活动端中的任意一个活动端上的刀片，均可以切换至第一定端、第二定端或第三定端上。It should be noted that for the double-pole double-throw switch 6, the blades on any one of the first movable end and the second movable end can be switched to the first fixed end or the second fixed end. Similarly, for the three-pole three-throw switch 7, the blade on any one of the first movable end, the second movable end, and the third movable end can be switched to the first fixed end, the second fixed end or On the third fixed end.
如图2和图3所示，第一发射通路1可经由第一切换开关8、双刀双掷开关6，通过第一天线9发射信号，或经由第一切换开关8、双刀双掷开关6、三刀三掷开关7，通过第二天线10、第三天线11或第四天线12发射信号。As shown in Figures 2 and 3, the first transmission path 1 can transmit signals via the first switch 8, double pole double throw switch 6, and the first antenna 9, or via the first switch 8, double pole double throw switch 6. The three-pole three-throw switch 7 transmits signals through the second antenna 10, the third antenna 11, or the fourth antenna 12.
如图2和图3所示，第一接收通路2可通过第一天线9，经由双刀双掷开关6和第一切换开关8接收信息，或通过第二天线10、第三天线11或第四天线12，经由三刀三掷开关7、双刀双掷开关6以及第一切换开关8接收信号。As shown in Figures 2 and 3, the first receiving path 2 can receive information via the first antenna 9, via the double-pole double-throw switch 6 and the first switch 8, or via the second antenna 10, the third antenna 11, or the second antenna. The four antenna 12 receives signals via the three-pole three-throw switch 7, the double-pole double-throw switch 6, and the first switch 8.
如图2和图3所示，第二接收通路3可通过第一天线9，经由双刀双掷开关6接收信息，或通过第二天线10、第三天线11或第四天线12，经由三刀三掷开关7、双刀双掷开关6接收信号。As shown in Figures 2 and 3, the second receiving path 3 can receive information via the first antenna 9, via the double-pole double-throw switch 6, or via the second antenna 10, the third antenna 11, or the fourth antenna 12, via the three antennas. The pole three throw switch 7 and the double pole double throw switch 6 receive signals.
如图2和图3所示，第三接收通路4和第四接收通路5可通过第二天线10、第三天线11或第四天线12，经由三刀三掷开关7接收信号。As shown in FIG. 2 and FIG. 3, the third receiving path 4 and the fourth receiving path 5 can receive signals via the second antenna 10, the third antenna 11 or the fourth antenna 12 and the three-pole three-throw switch 7.
本公开实施例中提供的射频前端电路，通过一个双刀双掷开关和一个三刀三掷开关，实现信号收发路径的切换。由图2和图3可知，本公开实施例中的射频前端电路，不需要再部署图1中虚线所示的线路，线路部署更加紧凑，线路路径更短，降低了线路的插损，且本公开实施例中的射频前端电路，线路连接更加简单，降低了电路设计的复杂度。另外，本公开实施例中的射频前端电路，减少了对三刀三掷开关的使用，而双刀双掷开关相比与三刀三掷开关，元件插损更小，因此还降低了元件插损，且双刀双掷开关的隔离度相比三刀三掷开关隔离度更好，因此，还能够更好的隔离发射信号和接收信息，降低发射信号对接收信号的干扰。The radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch. Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss. The isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
可选地，如图2和图3所示，第一发射通路1至少包括：与第一切换开关8的第一定端801连接的第一功率放大器101。第一接收通路2至少包括：与第一切换开关8的第二定端802连接的第一低噪声放大器201。而第一切 换开关8的活动端803与双刀双掷开关6的第一活动端601连接。Optionally, as shown in FIGS. 2 and 3, the first transmission path 1 at least includes: a first power amplifier 101 connected to the first fixed terminal 801 of the first switch 8. The first receiving path 2 includes at least: a first low noise amplifier 201 connected to the second fixed terminal 802 of the first switch 8. The movable end 803 of the first changeover switch 8 is connected to the first movable end 601 of the double pole double throw switch 6.
当第一切换开关8的活动端803上的刀片切换至第一切换开关8的第一定端801时，第一发射通路1可发射信号；当第一切换开关8的活动端803上的刀片切换至第一切换开关8的第二定端802时，第一接收通路2可接收信号。When the blade on the movable end 803 of the first switch 8 is switched to the first fixed end 801 of the first switch 8, the first transmission path 1 can transmit a signal; when the blade on the movable end 803 of the first switch 8 When switching to the second fixed terminal 802 of the first switch 8, the first receiving path 2 can receive signals.
而当双刀双掷开关6的第一活动端601的刀片切换至双刀双掷开关6的第一定端603(对应图2所示的电路)或第二定端604(对应图3所示的电路)时，第一发射通路1可通过第一天线9发射信号，第一接收通路2可通过第一天线9接收信号。当双刀双掷开关6的第二活动端602的刀片切换至双刀双掷开关6的第二定端604(对应图2所示的电路)或第一定端603(对应图3所示的电路)，与三刀三掷开关7的第一活动端701连通时，若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第一定端704，则第一发射通路1可通过第二天线10发射信号，第一接收通路2可通过第二天线10接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第二定端705，则第一发射通路1可通过第三天线11发射信号，第一接收通路2可通过第三天线11接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第三定端，则第一发射通路1可通过第四天线12发射信号，第一接收通路2可通过第四天线12接收信号。When the blade of the first movable end 601 of the double-pole double-throw switch 6 is switched to the first fixed end 603 (corresponding to the circuit shown in FIG. 2) or the second fixed end 604 (corresponding to the circuit shown in FIG. When the circuit shown), the first transmission path 1 can transmit signals through the first antenna 9, and the first reception path 2 can receive signals through the first antenna 9. When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the second fixed end 604 (corresponding to the circuit shown in Figure 2) or the first fixed end 603 (corresponding to the circuit shown in Figure 3) of the double-pole double-throw switch 6 When connected to the first movable end 701 of the three-pole three-throw switch 7, if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, Then the first transmitting path 1 can transmit signals through the second antenna 10, and the first receiving path 2 can receive signals through the second antenna 10; if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to three-pole three-throw The second fixed end 705 of the switch 7, the first transmitting path 1 can transmit signals through the third antenna 11, and the first receiving path 2 can receive signals through the third antenna 11; if the first movable end of the three-pole three-throw switch 7 The blade of 701 is switched to the third fixed terminal of the three-pole three-throw switch 7, the first transmitting path 1 can transmit signals through the fourth antenna 12, and the first receiving path 2 can receive signals through the fourth antenna 12.
可选地，为了滤除干扰信号，如图2和图3所示，该射频前端电路还包括：第一滤波器13。Optionally, in order to filter interference signals, as shown in FIG. 2 and FIG. 3, the radio frequency front-end circuit further includes: a first filter 13.
该第一滤波器13设置于第一切换开关8与双刀双掷开关6之间，具体地，第一滤波器13分别与第一切换开关8的活动端803和双刀双掷开关6的第一活动端601连接。The first filter 13 is arranged between the first switch 8 and the double-pole double-throw switch 6. Specifically, the first filter 13 is connected to the movable end 803 of the first switch 8 and the double-pole double-throw switch 6 respectively. The first movable end 601 is connected.
可选地，如图2和图3所示，第二接收通路3至少包括：与双刀双掷开关6的第二活动端602连接的第二低噪声放大器301。Optionally, as shown in FIGS. 2 and 3, the second receiving path 3 includes at least: a second low noise amplifier 301 connected to the second movable end 602 of the double-pole double-throw switch 6.
当双刀双掷开关6的第二活动端602的刀片切换至双刀双掷开关6的第一定端603时，第二接收通路3可通过第一天线9接收信号。当双刀双掷开关6的第二活动端602的刀片切换至双刀双掷开关6的第二定端604，与三刀三掷开关7的第一活动端701连通时，若三刀三掷开关7的第一活动端701 的刀片切换至三刀三掷开关7的第一定端704，则第二接收通路3可通过第二天线10接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第二定端705，则第二接收通路3可通过第三天线11接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第三定端，则第二接收通路3可通过第四天线12接收信号。When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the first fixed end 603 of the double-pole double-throw switch 6, the second receiving path 3 can receive signals through the first antenna 9. When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the second fixed end 604 of the double-pole double-throw switch 6, and is connected to the first movable end 701 of the three-pole three-throw switch 7, if the The blade of the first movable end 701 of the throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, the second receiving path 3 can receive the signal through the second antenna 10; The blade of a movable end 701 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the second receiving path 3 can receive the signal through the third antenna 11; if the first movable end 701 of the three-pole three-throw switch 7 is The blade is switched to the third fixed end of the three-pole three-throw switch 7, and the second receiving path 3 can receive signals through the fourth antenna 12.
可选地，为了滤除干扰信号，如图2和图3所示，该射频前端电路还包括：第二滤波器14。Optionally, in order to filter interference signals, as shown in FIG. 2 and FIG. 3, the radio frequency front-end circuit further includes: a second filter 14.
该第二滤波器14设置于第二低噪声放大器301与双刀双掷开关6之间，具体地，第二滤波器14分别与第二低噪声放大器301和双刀双掷开关6的第二活动端602连接。The second filter 14 is arranged between the second low noise amplifier 301 and the double pole double throw switch 6. Specifically, the second filter 14 is connected to the second low noise amplifier 301 and the second double pole double throw switch 6 respectively. The movable end 602 is connected.
如图4和图5所示，在本公开实施例的一个实施方式中，该射频前端电路还包括：第二发射通路15，以实现二发四收，即两路发射四路接收。As shown in Figs. 4 and 5, in an implementation of the embodiment of the present disclosure, the radio frequency front-end circuit further includes: a second transmission path 15 to realize two transmissions and four receptions, that is, two transmissions and four receptions.
其中，第二发射通路15和第二接收通路3通过第二切换开关16和第二滤波器14，分别连接至双刀双掷开关6的第二活动端602。第二滤波器14分别与第二切换开关16的活动端1603和双刀双掷开关6的第二活动端602连接。The second transmitting path 15 and the second receiving path 3 are respectively connected to the second movable end 602 of the double-pole double-throw switch 6 through the second switch 16 and the second filter 14. The second filter 14 is respectively connected to the movable end 1603 of the second switch 16 and the second movable end 602 of the double-pole double-throw switch 6.
其中，当第二切换开关16的活动端1603上的刀片切换至第二切换开关16的第一定端1601时，第二发射通路15可发射信号；当第二切换开关16的活动端1603上的刀片切换至第二切换开关16的第二定端1602时，第二接收通路3可接收信号。Wherein, when the blade on the movable end 1603 of the second switch 16 is switched to the first fixed end 1601 of the second switch 16, the second transmission path 15 can transmit a signal; when the movable end 1603 of the second switch 16 is When the blade of is switched to the second fixed terminal 1602 of the second switch 16, the second receiving path 3 can receive signals.
而当双刀双掷开关6的第二活动端602的刀片切换至双刀双掷开关6的第一定端603(对应图4所示的电路)或第二定端604(对应图5所示的电路)时，第二发射通路15可通过第一天线9发射信号，第二接收通路3可通过第一天线9接收信号。当双刀双掷开关6的第二活动端602的刀片切换至双刀双掷开关6的第二定端604(对应图4所示的电路)或第一定端603(对应图5所示的电路)，与三刀三掷开关7的第一活动端701连通时，若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第一定端704，则第二发射通路15可通过第二天线10发射信号，第二接收通路3可通过第二天线10接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀 三掷开关7的第二定端705，则第二发射通路15可通过第三天线11发射信号，第二接收通路3可通过第三天线11接收信号；若三刀三掷开关7的第一活动端701的刀片切换至三刀三掷开关7的第三定端，则第二发射通路15可通过第四天线12发射信号，第二接收通路3可通过第四天线12接收信号。When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the first fixed end 603 (corresponding to the circuit shown in FIG. 4) or the second fixed end 604 (corresponding to the circuit shown in FIG. When the circuit shown), the second transmitting path 15 can transmit signals through the first antenna 9 and the second receiving path 3 can receive signals through the first antenna 9. When the blade of the second movable end 602 of the double-pole double-throw switch 6 is switched to the second fixed end 604 (corresponding to the circuit shown in FIG. 4) or the first fixed end 603 (corresponding to the circuit shown in FIG. When connected to the first movable end 701 of the three-pole three-throw switch 7, if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, Then the second transmitting path 15 can transmit signals through the second antenna 10, and the second receiving path 3 can receive signals through the second antenna 10; if the blade of the first movable end 701 of the three-pole three-throw switch 7 is switched to three-pole three-throw The second fixed terminal 705 of the switch 7, the second transmitting path 15 can transmit signals through the third antenna 11, and the second receiving path 3 can receive signals through the third antenna 11; if the first movable terminal of the three-pole three-throw switch 7 The blade of 701 is switched to the third fixed terminal of the three-pole three-throw switch 7, the second transmitting path 15 can transmit signals through the fourth antenna 12, and the second receiving path 3 can receive signals through the fourth antenna 12.
可选地，如图4和图5所示，第二发射通路15至少包括：与第二切换开关16的第一定端1601连接的第二功率放大器1501。Optionally, as shown in FIGS. 4 and 5, the second transmission path 15 includes at least: a second power amplifier 1501 connected to the first fixed terminal 1601 of the second switch 16.
其中，第二接收通路3中的第二低噪声放大器301与第二切换开关16的第二定端1602连接。Wherein, the second low noise amplifier 301 in the second receiving path 3 is connected to the second fixed terminal 1602 of the second switch 16.
可选地，如图2和图3所示，第三接收通路4至少包括：与三刀三掷开关7的第二活动端702连接的第三低噪声放大器401。Optionally, as shown in FIGS. 2 and 3, the third receiving path 4 at least includes: a third low noise amplifier 401 connected to the second movable end 702 of the three-pole three-throw switch 7.
其中，当三刀三掷开关7的第二活动端702的刀片切换至三刀三掷开关7的第一定端704时，第三接收通路4通过第二天线10接收信号；当三刀三掷开关7的第二活动端702的刀片切换至三刀三掷开关7的第二定端705时，第三接收通路4通过第三天线11接收信号；当三刀三掷开关7的第二活动端702的刀片切换至三刀三掷开关7的第三定端时，第三接收通路4通过第四天线12接收信号。Wherein, when the blade of the second movable end 702 of the three-pole three-throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, the third receiving path 4 receives the signal through the second antenna 10; When the blade of the second movable end 702 of the throw switch 7 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the third receiving path 4 receives the signal through the third antenna 11; When the blade of the movable end 702 is switched to the third fixed end of the three-pole three-throw switch 7, the third receiving path 4 receives the signal through the fourth antenna 12.
可选的，为了滤除干扰信号，如图2和图3所示，该射频前端电路还包括：第三滤波器17。Optionally, in order to filter out interference signals, as shown in FIG. 2 and FIG. 3, the radio frequency front-end circuit further includes: a third filter 17.
其中，该第三滤波器17设置于第三低噪声放大器401与三刀三掷开关7之间，具体地，第三滤波器17分别与第三低噪声放大器401和三刀三掷开关7的第二活动端702连接。Wherein, the third filter 17 is disposed between the third low noise amplifier 401 and the three-pole three-throw switch 7. Specifically, the third filter 17 is connected to the third low-noise amplifier 401 and the three-pole three-throw switch 7 respectively. The second movable end 702 is connected.
可选地，如图2和图3所示，第四接收通路5至少包括：与三刀三掷开关7的第三活动端703连接的第四低噪声放大器。Optionally, as shown in FIGS. 2 and 3, the fourth receiving path 5 at least includes: a fourth low noise amplifier connected to the third movable end 703 of the three-pole three-throw switch 7.
其中，当三刀三掷开关7的第三活动端703的刀片切换至三刀三掷开关7的第一定端704时，第四接收通路5通过第二天线10接收信号；当三刀三掷开关7的第三活动端703的刀片切换至三刀三掷开关7的第二定端705时，第四接收通路5通过第三天线11接收信号；当三刀三掷开关7的第三活动端703的刀片切换至三刀三掷开关7的第三定端时，第四接收通路5通过第四天线12接收信号。Wherein, when the blade of the third movable end 703 of the three-pole three-throw switch 7 is switched to the first fixed end 704 of the three-pole three-throw switch 7, the fourth receiving path 5 receives the signal through the second antenna 10; When the blade of the third movable end 703 of the throw switch 7 is switched to the second fixed end 705 of the three-pole three-throw switch 7, the fourth receiving path 5 receives the signal through the third antenna 11; When the blade of the movable end 703 is switched to the third fixed end of the three-pole three-throw switch 7, the fourth receiving path 5 receives the signal through the fourth antenna 12.
可选地，为了滤除干扰信号，如图2和图3所示，该射频前端电路还包括：第四滤波器18。Optionally, in order to filter interference signals, as shown in FIG. 2 and FIG. 3, the radio frequency front-end circuit further includes: a fourth filter 18.
其中，该第三滤波器17设置于第三低噪声放大器401与三刀三掷开关7之间，具体地，该第四滤波器18分别与第四低噪声放大器和三刀三掷开关7的第三活动端703连接。The third filter 17 is disposed between the third low noise amplifier 401 and the three-pole three-throw switch 7. Specifically, the fourth filter 18 is connected to the fourth low-noise amplifier and the three-pole three-throw switch 7 respectively. The third movable end 703 is connected.
本公开实施例中提供的射频前端电路，通过一个双刀双掷开关和一个三刀三掷开关，实现信号收发路径的切换。由图2和图3可知，本公开实施例中的射频前端电路，不需要再部署图1中虚线所示的线路，线路部署更加紧凑，线路路径更短，降低了线路的插损，且本公开实施例中的射频前端电路，线路连接更加简单，降低了电路设计的复杂度。另外，本公开实施例中的射频前端电路，减少了对三刀三掷开关的使用，而双刀双掷开关相比与三刀三掷开关，元件插损更小，因此还降低了元件插损，且双刀双掷开关的隔离度相比三刀三掷开关隔离度更好，因此，还能够更好的隔离发射信号和接收信息，降低发射信号对接收信号的干扰。The radio frequency front-end circuit provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch. Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss. The isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
依据本公开实施例的另一个方面，提供了一种移动终端，包括：控制器以及如上述实施例所述的射频前端电路。According to another aspect of the embodiments of the present disclosure, there is provided a mobile terminal including: a controller and the radio frequency front-end circuit described in the above-mentioned embodiments.
其中，该控制器用于控制双刀双掷开关6、三刀三掷开关7以及第一切换开关8的切换。Among them, the controller is used to control the switching of the double-pole double-throw switch 6, the three-pole triple-throw switch 7 and the first switch 8.
还有，在射频前端电路还包括第二发射通路15，所述第二发射通路15和所述第二接收通路3通过第二切换开关16连接至所述双刀双掷开关6的第二活动端602时，所述控制器还用于控制所述第二切换开关16的切换。In addition, the radio frequency front-end circuit further includes a second transmitting path 15, and the second transmitting path 15 and the second receiving path 3 are connected to the second activity of the double-pole double-throw switch 6 through a second switch 16 At terminal 602, the controller is also used to control the switching of the second switch 16.
本公开实施例中提供的移动终端中的射频前端电路，通过一个双刀双掷开关和一个三刀三掷开关，实现信号收发路径的切换。由图2和图3可知，本公开实施例中的射频前端电路，不需要再部署图1中虚线所示的线路，线路部署更加紧凑，线路路径更短，降低了线路的插损，且本公开实施例中的射频前端电路，线路连接更加简单，降低了电路设计的复杂度。另外，本公开实施例中的射频前端电路，减少了对三刀三掷开关的使用，而双刀双掷开关相比与三刀三掷开关，元件插损更小，因此还降低了元件插损，且双刀双掷开关的隔离度相比三刀三掷开关隔离度更好，因此，还能够更好的隔离发射 信号和接收信息，降低发射信号对接收信号的干扰。The radio frequency front-end circuit in the mobile terminal provided in the embodiment of the present disclosure realizes the switching of signal transmission and reception paths through a double pole double throw switch and a three pole three throw switch. It can be seen from Figures 2 and 3 that the radio frequency front-end circuit in the embodiment of the present disclosure does not need to deploy the line shown by the dashed line in Figure 1. The line deployment is more compact, the line path is shorter, the line insertion loss is reduced, and the cost In the radio frequency front-end circuit in the disclosed embodiment, the circuit connection is simpler, which reduces the complexity of circuit design. In addition, the radio frequency front-end circuit in the embodiment of the present disclosure reduces the use of the three-pole three-throw switch. Compared with the three-pole three-throw switch, the double-pole double-throw switch has smaller component insertion loss, thus reducing the component insertion loss. The isolation of the double-pole double-throw switch is better than that of the triple-throw switch. Therefore, it can better isolate the transmitted signal and the received information, and reduce the interference of the transmitted signal to the received signal.
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are based on the orientation shown in the drawings or The positional relationship is only for the convenience of describing the present disclosure 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 of the present disclosure.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“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。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。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 indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或可以互相通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。In the present disclosure, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.
在本公开中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present disclosure, unless otherwise clearly defined and defined, the "above" or "below" of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The "below", "below" and "below" the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.
尽管已描述了本公开实施例的可选实施例，但本领域内的技术人员一旦 得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括可选实施例以及落入本公开实施例范围的所有变更和修改。Although the optional embodiments of the embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including alternative embodiments and all changes and modifications falling within the scope of the embodiments of the present disclosure.
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的相同要素。Finally, it should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities Or there is any such actual relationship or sequence between operations. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also those that are not explicitly listed. Other elements listed, or also include elements inherent to this process, method, article, or terminal device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other same elements in the process, method, article or terminal device that includes the element.
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。The above are optional implementations of the present disclosure. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present disclosure, and these improvements and modifications are also Within the protection scope of this disclosure.

Claims (13)

  1. 一种射频前端电路，包括：A radio frequency front-end circuit, including:
    第一发射通路、第一接收通路、第二接收通路、第三接收通路、第四接收通路；A first transmitting path, a first receiving path, a second receiving path, a third receiving path, and a fourth receiving path;
    双刀双掷开关，所述双刀双掷开关的第一活动端通过第一切换开关分别连接至所述第一发射通路和所述第一接收通路，所述双刀双掷开关的第二活动端与所述第二接收通路连接；所述双刀双掷开关的第一定端或第二定端连接至第一天线；A double-pole double-throw switch, the first movable end of the double-pole double-throw switch is connected to the first transmitting path and the first receiving path through a first switch, and the second The movable end is connected to the second receiving path; the first fixed end or the second fixed end of the double-pole double-throw switch is connected to the first antenna;
    三刀三掷开关，所述三刀三掷开关的第一活动端与所述双刀双掷开关的第一定端和第二定端中未与所述第一天线连接的定端电连接，所述三刀三掷开关的第二活动端与所述第三接收通路连接，所述三刀三掷开关的第三活动端与所述第四接收通路连接；所述三刀三掷开关的第一定端连接至第二天线，第二定端连接至第三天线，第三定端连接至第四天线。A three-pole three-throw switch, the first movable end of the three-pole three-throw switch is electrically connected to the fixed end of the first and second fixed ends of the double-pole double-throw switch that is not connected to the first antenna , The second movable end of the three-pole three-throw switch is connected to the third receiving path, and the third movable end of the three-pole three-throw switch is connected to the fourth receiving path; the three-pole three-throw switch The first fixed end is connected to the second antenna, the second fixed end is connected to the third antenna, and the third fixed end is connected to the fourth antenna.
  2. 根据权利要求1所述的射频前端电路，其中，所述第一发射通路至少包括：与所述第一切换开关的第一定端连接的第一功率放大器；The radio frequency front-end circuit according to claim 1, wherein the first transmission path at least comprises: a first power amplifier connected to a first fixed terminal of the first switch;
    所述第一接收通路至少包括：与所述第一切换开关的第二定端连接的第一低噪声放大器。The first receiving path includes at least: a first low noise amplifier connected to the second fixed terminal of the first switch.
  3. 根据权利要求1或2所述的射频前端电路，还包括：第一滤波器，所述第一滤波器分别与所述第一切换开关的活动端和所述双刀双掷开关的第一活动端连接。The radio frequency front-end circuit according to claim 1 or 2, further comprising: a first filter, the first filter is respectively connected to the movable end of the first switch and the first activity of the double-pole double-throw switch端连接。 End connection.
  4. 根据权利要求1所述射频前端电路，其中，所述第二接收通路至少包括：与所述双刀双掷开关的第二活动端连接的第二低噪声放大器。The radio frequency front-end circuit according to claim 1, wherein the second receiving path at least comprises: a second low noise amplifier connected to the second movable end of the double-pole double-throw switch.
  5. 根据权利要求4所述的射频前端电路，还包括：第二滤波器，所述第二滤波器分别与所述第二低噪声放大器和所述双刀双掷开关的第二活动端连接。The radio frequency front-end circuit according to claim 4, further comprising: a second filter, the second filter being respectively connected to the second low noise amplifier and the second movable end of the double-pole double-throw switch.
  6. 根据权利要求5所述的射频前端电路，还包括：第二发射通路；The radio frequency front-end circuit according to claim 5, further comprising: a second transmission path;
    所述第二发射通路和所述第二接收通路通过第二切换开关和所述第二滤波器分别连接至所述双刀双掷开关的第二活动端；所述第二滤波器分别与所 述第二切换开关的活动端和所述双刀双掷开关的第二活动端连接。The second transmitting path and the second receiving path are respectively connected to the second movable end of the double-pole double-throw switch through a second switch and the second filter; The movable end of the second switch is connected to the second movable end of the double-pole double-throw switch.
  7. 根据权利要求6所述的射频前端电路，其中，所述第二发射通路至少包括：与所述第二切换开关的第一定端连接的第二功率放大器；The radio frequency front-end circuit according to claim 6, wherein the second transmission path at least comprises: a second power amplifier connected to the first fixed terminal of the second switch;
    其中，所述第二接收通路中的第二低噪声放大器与所述第二切换开关的第二定端连接。Wherein, the second low noise amplifier in the second receiving path is connected to the second fixed terminal of the second switch.
  8. 根据权利要求1所述的射频前端电路，其中，所述第三接收通路至少包括：与所述三刀三掷开关的第二活动端连接的第三低噪声放大器。The radio frequency front-end circuit according to claim 1, wherein the third receiving path at least comprises: a third low noise amplifier connected to the second movable end of the three-pole three-throw switch.
  9. 根据权利要求8所述的射频前端电路，还包括：第三滤波器，所述第三滤波器分别与所述第三低噪声放大器和所述三刀三掷开关的第二活动端连接。The radio frequency front-end circuit according to claim 8, further comprising: a third filter, the third filter being respectively connected to the third low noise amplifier and the second movable end of the three-pole three-throw switch.
  10. 根据权利要求1所述的射频前端电路，其中，所述第四接收通路至少包括：与所述三刀三掷开关的第三活动端连接的第四低噪声放大器。The radio frequency front-end circuit according to claim 1, wherein the fourth receiving path at least comprises: a fourth low noise amplifier connected to the third movable end of the three-pole three-throw switch.
  11. 根据权利要求10所述的射频前端电路，还包括：第四滤波器，所述第四滤波器分别与所述第四低噪声放大器和所述三刀三掷开关的第三活动端连接。The radio frequency front-end circuit according to claim 10, further comprising: a fourth filter, the fourth filter being respectively connected to the fourth low noise amplifier and the third movable end of the three-pole three-throw switch.
  12. 一种移动终端，包括：控制器以及如权利要求1至11任一项所述的射频前端电路；A mobile terminal, comprising: a controller and the radio frequency front-end circuit according to any one of claims 1 to 11;
    其中，所述控制器用于控制所述双刀双掷开关、所述三刀三掷的开闭以及第一切换开关的切换。Wherein, the controller is used to control the opening and closing of the double pole double throw switch, the triple pole triple throw switch, and the switching of the first switch.
  13. 根据权利要求12所述的移动终端，其中，所述射频前端电路还包括第二发射通路，所述第二发射通路和所述第二接收通路通过第二切换开关连接至所述双刀双掷开关的第二活动端；The mobile terminal according to claim 12, wherein the radio frequency front-end circuit further comprises a second transmitting path, and the second transmitting path and the second receiving path are connected to the double pole double throw through a second switch The second movable end of the switch;
    所述控制器还用于控制所述第二切换开关的切换。The controller is also used to control the switching of the second switch.
PCT/CN2020/100191 2019-08-16 2020-07-03 Radio frequency front-end circuit and mobile terminal WO2021031713A1 (en)

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