WO2024016282A1 - Circuit de liaison d'antenne et terminal - Google Patents

Circuit de liaison d'antenne et terminal Download PDF

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Publication number
WO2024016282A1
WO2024016282A1 PCT/CN2022/107175 CN2022107175W WO2024016282A1 WO 2024016282 A1 WO2024016282 A1 WO 2024016282A1 CN 2022107175 W CN2022107175 W CN 2022107175W WO 2024016282 A1 WO2024016282 A1 WO 2024016282A1
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WO
WIPO (PCT)
Prior art keywords
antenna
switch
circuit
connection end
broadband communication
Prior art date
Application number
PCT/CN2022/107175
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English (en)
Chinese (zh)
Inventor
张远龙
冷鹏
金垚
吴泽玮
辛峰
Original Assignee
海能达通信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2022/107175 priority Critical patent/WO2024016282A1/fr
Publication of WO2024016282A1 publication Critical patent/WO2024016282A1/fr

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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
    • 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
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Definitions

  • the present application relates to the field of communication technology, and specifically to a linkage antenna circuit and terminal.
  • the antenna provided for broadband communication is a built-in antenna, and the built-in antenna is divided into a main transmitting and receiving antenna and a diversity receiving antenna.
  • the main antenna is placed at the bottom of the terminal, and the diversity antenna is placed at the top of the terminal.
  • the antenna installed for narrowband communication is an external antenna. Due to terminal characteristics and structural stacking factors, the efficiency of the built-in antenna in the low-frequency band (729-960MHz) during broadband communication is low, especially the efficiency of the diversity antenna is even lower. Broadband communication of terminals is usually deployed in low frequency bands. When private network video is pulled up or big data is downloaded, the inefficiency of the terminal's built-in antenna will lead to poor rates and a decrease in the overall transceiver capability of the terminal.
  • This application proposes a linkage antenna circuit and terminal to improve the efficiency of broadband communication of the terminal and improve the overall transceiver capability of the terminal.
  • the linkage antenna circuit includes a first antenna, a second antenna, a third antenna, a first type filter circuit, and a second type filter circuit. , switch circuit, narrowband communication circuit and broadband communication circuit.
  • the first antenna is used for narrowband communication; the narrowband communication circuit is connected to the first antenna through a first type filter circuit to perform narrowband communication; the wideband communication circuit is connected to the first antenna through a switch circuit and a second type filter circuit, and is connected to the first antenna through a switch circuit and a second type filter circuit.
  • the switch circuit is connected to the second antenna and the third antenna to select the first antenna and the second antenna to perform broadband communication, or to select the first antenna and the third antenna to perform broadband communication, or to select the first antenna, the second antenna, and the third antenna.
  • the antenna performs broadband communication; wherein, when the first antenna and the second antenna are selected to perform broadband communication, the signal received by the first antenna transmits the narrowband signal to the narrowband communication circuit through the first type filter circuit, and the signal received by the first antenna The wideband signal therein is passed to the wideband communication circuit through the second type filter circuit.
  • the switch circuit when the second antenna performs the transmission and reception of the main set signal in broadband communication, the switch circuit is configured to select one of the first antenna and the third antenna with stronger receiving ability to connect to the broadband communication circuit to perform the broadband communication. Reception of diversity signals; when the first antenna performs the transmission and reception of the main set signal in broadband communication, the switch circuit is configured to select the one with stronger reception ability among the second antenna and the third antenna to connect to the broadband communication circuit to perform broadband communication. Reception of diversity signals in communications.
  • the working modes of the linked antenna circuit include a first mode, a second mode and a third mode; when the linked antenna circuit works in the first mode, the switch circuit is configured to enable the first antenna to transmit and receive narrowband signals in narrowband communications. , the second antenna is used to send and receive the main signal in broadband communication, and the third antenna is used to receive the diversity signal in broadband communication; when the linkage antenna circuit works in the second mode, the switch circuit is configured to make the first antenna use The second antenna is used to send and receive narrowband signals in narrowband communications, the second antenna is used to send and receive main signals in broadband communications, and the first antenna is also used to receive diversity signals in broadband communications; when the linkage antenna circuit works in the third mode, the switch The switch circuit is configured such that the first antenna is used to transmit and receive narrowband signals in narrowband communication, the first antenna is also used to transmit and receive main signals in wideband communication, and the second antenna is used to receive diversity signals in wideband communication.
  • the switch circuit when the first antenna works abnormally, the switch circuit is configured to make the linkage antenna circuit work in the first mode.
  • the switch circuit includes a first switch and a second switch.
  • the first switch includes a first connection end, a second connection end, a third connection end and a fourth connection end.
  • the first connection end of the first switch is used for Connect to the second type filter circuit, the second connection end of the first switch is used to connect the second antenna, the fourth connection end of the first switch is used to connect the broadband communication circuit;
  • the second switch includes a first connection end, a second connection end and a third connection end.
  • the first connection end of the second switch is used to connect to the third connection end of the first switch.
  • the second connection end of the second switch is used to connect the third antenna.
  • the third connection end of the second switch is used to connect to the third connection end of the second switch.
  • the first connection end of the first switch is connected to the fourth connection end of the first switch, so that the broadband communication circuit passes
  • the first switch is connected to the first antenna; when the second antenna performs transmission or reception of the main set signal of broadband communication, the second connection end of the first switch is connected to the fourth connection end of the first switch, so that the broadband communication
  • the circuit is connected to the second antenna through the first switch; when the first antenna performs reception of the diversity signal of broadband communication, the first connection end of the first switch is connected to the third connection end of the first switch, and the second connection end of the second switch is connected to the second antenna.
  • the first connection end is connected to the third connection end of the second switch, so that the broadband communication circuit is connected to the first antenna through the first switch and the second switch; when the second antenna performs reception of the diversity signal of broadband communication, the third connection end is connected to the third connection end of the second switch.
  • the second connection end of a switch is connected to the third connection end of the first switch, and the first connection end of the second switch is connected to the third connection end of the second switch, so that the broadband communication circuit passes through the first switch and the second connection end.
  • the switch is connected to the second antenna; when the third antenna performs reception of the diversity signal of broadband communication, the second connection end of the second switch is connected to the third connection end of the second switch, so that the broadband communication circuit passes through the second switch And connected to the third antenna.
  • the switching circuit further includes a coupling filter module, and the fourth connection end of the first switch is connected to the broadband communication circuit through the coupling filter module.
  • the switch circuit also includes a third switch and a second antenna switch.
  • the third switch includes a first connection end, a second connection end and a third connection end, wherein the first connection end of the third switch is connected to the coupling filter module, and the third connection end of the third switch is connected to the broadband communication circuit;
  • the two-antenna switching switch includes at least one transmitting and receiving terminal, an antenna terminal and a control power feedback terminal, wherein the second connection terminal of the first switch is connected to a transmitting and receiving terminal of the second antenna switching switch, and the second antenna is connected to the second antenna switching switch.
  • the antenna end is connected to the second antenna and the first switch through the second antenna switch, and the second connection end of the third switch is connected to the control power feedback end of the second antenna switch; the first antenna performs broadband communication.
  • the first connection end of the third switch is connected to the third connection end of the third switch, so that the broadband communication circuit is connected to the coupling filter module through the third switch; the main part of the broadband communication is performed on the second antenna.
  • the second connection end of the third switch is connected to the third connection end of the third switch, so that the broadband communication circuit is connected to the control power feedback end of the second antenna switching switch through the third switch.
  • the coupling filter module includes a coupler and a duplex filter.
  • the coupler includes a first connection end, a second connection end and a third connection end.
  • the first connection end of the coupler is connected to the fourth connection end of the first switch.
  • the second connection end of the coupler is connected to the first connection end of the third switch;
  • the duplex filter includes a first connection end, a second connection end and a third connection end, wherein the first connection end of the duplex filter is connected to To the third connection end of the coupler, the second connection end and the third connection end of the duplex filter are connected to the broadband communication circuit.
  • the switch circuit also includes a third antenna switch and a filter module.
  • the third antenna switch includes at least one transmitting and receiving terminal and an antenna terminal, wherein one transmitting and receiving terminal of the third antenna switching switch is connected to the third terminal of the second switch.
  • the second connection end, the antenna end of the third antenna switching switch is connected to the third antenna;
  • the filter module is connected between the third connection end of the second switch and the broadband communication circuit.
  • the linkage antenna circuit further includes a microstrip coupling circuit, which is coupled to the first antenna and connected to the narrowband communication circuit.
  • another technical solution adopted by this application is to provide a terminal, which includes any one of the above-mentioned linkage antenna circuits.
  • the linkage antenna circuit of this application is based on the prior art by setting a first type filter circuit, a second type filter circuit and a switch circuit, so that the terminal can During broadband communication, the first antenna can be connected to the first antenna through the switch circuit, and the first antenna and the second antenna can be selected through the switch circuit to perform broadband communication, or the first antenna and the third antenna can be selected to perform broadband communication, or the first antenna and the third antenna can be selected.
  • the second antenna and the third antenna perform broadband communications.
  • the channels of the first antenna, the second antenna and the third antenna can be shared and switched in real time, thereby improving the bandwidth while ensuring dual-mode communication of broadband communication and narrowband communication at the same time. Communication efficiency and improve the overall sending and receiving capabilities of the terminal.
  • Figure 1 is a schematic structural diagram of the first embodiment of the linkage antenna circuit of the present application.
  • Figure 2 is a schematic structural diagram of the second embodiment of the linkage antenna circuit of the present application.
  • Figure 3 is a schematic structural diagram of the third embodiment of the linkage antenna circuit of the present application.
  • Figure 4 is a schematic structural diagram of an embodiment of the terminal of the present application.
  • FIG. 1 is a schematic structural diagram of a first embodiment of the linkage antenna circuit of this application.
  • the linkage antenna circuit 100 of this embodiment includes a first antenna 10, a second antenna 20, a third antenna 30, a first type filter circuit 40, a second type filter circuit 50, a switch circuit 60, a narrowband Communication circuit 70 and broadband communication circuit 80.
  • the first antenna 10 is used for narrowband communications.
  • narrowband communication is a communication technology before the emergence of broadband technology.
  • the theoretical channel bandwidth is small and can only meet the transmission of a small amount of voice and text information. It is unable to carry a large amount of video, audio, and image information, such as PDT, DMR and other communication technologies.
  • the narrowband signal of narrowband communication is a key control frequency band signal with a frequency lower than 470MHz.
  • Broadband communications refers to wireless technologies used in public land mobile networks, such as 3G, LTE, 4G, 5G and other wireless communication technologies.
  • the broadband signal of broadband communication refers to the cellular frequency band signal with a frequency of 699-960MHz.
  • the narrowband communication circuit 70 is connected to the first antenna 10 through the first type filter circuit 40 to perform narrowband communication.
  • the broadband communication circuit 80 is connected to the first antenna 10 through the switch circuit 60 and the second type filter circuit 50, and is connected to the second antenna 20 and the third antenna 30 through the switch circuit 60 to select the first antenna 10 and the second antenna 30.
  • the antenna 20 performs broadband communication, or the first antenna 10 and the third antenna 30 are selected to perform broadband communication, or the first antenna 10 , the second antenna 20 , and the third antenna 30 are selected to perform broadband communication.
  • the signal received by the first antenna 10 can pass through the first type filter circuit 40 to transfer the narrowband signal to the narrowband communication circuit 70.
  • the first antenna 10 The received signal can be passed through the second type filter circuit 50 to transfer the wideband signal to the wideband communication circuit 80, so that the first antenna 10 has the capability of simultaneous narrowband communication and wideband communication.
  • the first type filter circuit 40 can be configured as a multi-stage low-pass filter circuit.
  • the low-pass filter circuit is used to deeply suppress the cellular frequency band signal of broadband communication to control the frequency band signal through the transmit button with a frequency lower than 470 MHz.
  • the second type filter circuit 50 can be set as a multi-order high-pass filter circuit.
  • the high-pass filter circuit is used to deeply suppress the transmit button control frequency band signal of narrow-band communication to pass the cellular frequency band signal with a frequency of 699-960MHz.
  • the first antenna 10 is respectively The first type filter circuit 40 and the second type filter circuit 50 are connected to the narrowband communication circuit 70 and the broadband communication circuit 80 respectively.
  • the first antenna 10 may have the ability to perform narrowband communication and broadband communication at the same time.
  • the first type filter circuit 40 is provided.
  • the second type filter circuit 50 can prevent other signals from interfering with the first antenna 10 when performing wide/narrowband communication.
  • the narrowband communication circuit 70 includes a narrowband transmitting/receiving unit, a standing wave ratio detection unit and a control unit
  • the broadband communication circuit 80 includes a power amplifier, a broadband transceiver and a control unit.
  • This embodiment also provides a switch circuit 60.
  • the switch circuit 60 is respectively connected to the second type filter circuit 50, the second antenna 20, the third antenna 30 and the broadband communication circuit 80.
  • the first antenna 10 and the second antenna 20 can be selected to perform broadband communication based on the switch circuit 60, or the first antenna 10 and the third antenna 30 can be selected to perform broadband communication, or the first antenna 10, the second antenna 20, and the third antenna can be selected to perform broadband communication.
  • Antenna 30 performs wideband communication.
  • the first antenna 10 is an external antenna
  • the second antenna 20 is a built-in main antenna
  • the third antenna 30 is a built-in diversity antenna.
  • the built-in main antenna is generally placed at the bottom of the terminal
  • the built-in diversity antenna The antenna is generally placed on the top of the terminal. Due to the stacking factors of the terminal structure, the efficiency of the built-in antenna in the low-frequency band is low, especially the efficiency of the built-in diversity antenna is even lower. Comparing antenna efficiency, the efficiency of the external antenna is greater than the efficiency of the built-in main antenna, and the efficiency of the built-in main antenna is greater than the efficiency of the built-in diversity antenna.
  • the first antenna 10 and the second antenna 20 can be selected to perform broadband communication, or the first antenna 10 and the third antenna 30 can be selected to perform broadband communication, or the first antenna can be selected 10.
  • the second antenna 20 and the third antenna 30 perform broadband communication, thereby improving the efficiency of broadband communication and thereby improving the overall transceiver capability of the terminal.
  • the linkage antenna circuit 100 of the present application is based on the prior art by providing the first type filter circuit 40, the second type filter circuit 50 and the switch circuit 60, so that the terminal can perform broadband communication.
  • the first antenna 10 can be connected to the first antenna 10 through the switching circuit 60, and the first antenna 10 and the second antenna 20 can be selected to perform broadband communication, or the first antenna 10 and the third antenna 30 can be selected to perform broadband communication, or the first antenna 10 can be selected to perform broadband communication.
  • the antenna 10, the second antenna 20, and the third antenna 30 perform broadband communication.
  • the channels of the first antenna 10, the second antenna 20 and the third antenna 30 can be shared and switched in real time, so as to ensure that dual-mode communication of broadband communication and narrowband communication can be carried out at the same time. , improve the efficiency of broadband communication and improve the overall sending and receiving capabilities of the terminal.
  • the working modes of the linked antenna circuit include a first mode, a second mode and a third mode.
  • the first mode is the default working mode
  • the second mode is the diversity capability improvement mode
  • the third mode is the main set capability enhancement mode.
  • the switch circuit 60 is configured to enable the first antenna 10 to transmit and receive narrowband signals in narrowband communications, and the second antenna 20 to transmit and receive broadband communications.
  • the third antenna 30 is used to receive the diversity signal in broadband communication.
  • the diversity capability enhancement mode means that the linkage antenna circuit 100 improves the efficiency of diversity reception signals in broadband communications to ensure the quality of the received signals.
  • the switch circuit 60 is configured such that the first antenna 10 is used to transmit and receive narrowband signals in narrowband communications, the second antenna 20 is used to transmit and receive main signals in wideband communications, and the first antenna 10 is also used to receive signals in wideband communications. diversity signal.
  • the main set capability improvement mode means that the linkage antenna circuit 100 improves the efficiency of main set reception and reflection signals in broadband communications to ensure that the main set signal Quality of reception and transmission.
  • the switch circuit 60 is configured such that the first antenna 10 is used to transmit and receive narrowband signals in narrowband communications, and the first antenna 10 is also used to transmit and receive main set signals in wideband communications, and the second antenna 20 is used to receive signals in wideband communications. diversity signal.
  • the switch circuit 60 When the first antenna 10 is working abnormally, the switch circuit 60 is configured to make the linkage antenna circuit 100 work in the first mode, that is, the default working mode.
  • the default operating mode is that the switch circuit 60 is configured such that the first antenna 10 is used to transmit and receive narrowband signals in narrowband communications, the second antenna 20 is used to transmit and receive main signals in broadband communications, and the third antenna 30 is used to receive broadband signals. Diversity signals in communications.
  • the linked antenna circuit 100 of the present application can not only achieve simultaneous wide- and narrow-band communications, but also can essentially achieve simultaneous simultaneous communication by switching the switch circuit 60 by setting the second mode (diversity capability improvement mode) and the third mode (main set capability enhancement mode).
  • the transmission and reception performance of the main set signal and the reception performance of the diversity signal of the broadband communication of the linked antenna circuit 100 are improved, thereby improving the user experience.
  • Figure 2 is a schematic structural diagram of a second embodiment of the linkage antenna circuit of the present application.
  • the switch circuit 60 of the linkage antenna circuit 100 of this embodiment includes a first switch 61 and Second switch 62.
  • the first switch 61 includes a first connection terminal RF1, a second connection terminal RF2, a third connection terminal RF3 and a fourth connection terminal RF4, wherein the first connection terminal RF1 of the first switch 61 is used to connect the second type filter circuit 50 , the second connection terminal RF2 of the first switch 61 is used to connect the second antenna 20 , and the fourth connection terminal RF4 of the first switch 61 is used to connect the broadband communication circuit 80 .
  • the first switch 61 can be a general-purpose input/output (GPIO) logic control device, and can be set as a double-pole double-throw switch.
  • the main function of the first switch 61 is to control instructions according to high and low levels.
  • the connection between the first connection end RF1 and the third connection end RF3/the fourth connection end RF4 is switched, and the connection between the second connection end RF2 and the third connection end RF3/the fourth connection end RF4 is switched.
  • the specific switching path is determined by the logic of the terminal itself. Table decision.
  • the first switch 61 can also be other logic control devices, as long as it meets the above-mentioned functions of the first switch 61 , which is not limited here.
  • the second switch 62 includes a first connection terminal RF5, a second connection terminal RF6 and a third connection terminal ANT1.
  • the first connection terminal RF5 of the second switch is used to connect to the third connection terminal RF3 of the first switch 61.
  • the second switch 62 The second connection terminal RF6 is used to connect the third antenna 30
  • the third connection terminal ANT1 of the second switch 62 is used to connect the broadband communication circuit 80 .
  • the second switch 62 can also be a GPIO logic control device and can be set as a single-pole double-throw switch. Its main function is to connect the first connection terminal RF5 of the second switch 62 with the third connection terminal ANT1 according to the high and low level control instructions. The connection with the second connection terminal RF6 and the third connection terminal ANT1 of the second switch 62 performs switching, and the specific switching path is determined by the logic table of the terminal itself.
  • the second switch 62 can also be other logic control devices, as long as it meets the above-mentioned functions of the second switch 62 , which is not limited here.
  • the first connection terminal RF1 of the first switch 61 is connected to the fourth connection terminal RF4 of the first switch 61 so that the broadband communication circuit 80 passes through the first
  • the switch 61 is connected to the first antenna 10 .
  • the first switch 61 makes the first connection end RF1 of the first switch 61 and the fourth connection of the first switch 61 based on the first switching path control instruction. Terminal RF4 is connected, thereby realizing that the broadband communication circuit 80 is connected to the first antenna 10 through the first switch 61.
  • the first antenna 10 is used for transmitting or receiving the main signal of broadband communication. Since the first antenna 10 is an external antenna, it is relatively Compared with the built-in antenna, the second antenna 20 and the third antenna 30 are more efficient, thereby improving the main set transceiver performance of broadband communication.
  • the second connection terminal RF2 of the first switch 61 is connected to the fourth connection terminal RF4 of the first switch 61 so that the broadband communication circuit passes through the first switch. 61 and connected to the second antenna 20.
  • the first connection terminal RF1 of the first switch 61 is connected to the third connection terminal RF3 of the first switch 61 , and the first connection terminal RF5 of the second switch 62 is connected to The third connection terminal ANT1 of the second switch 62 is connected, so that the broadband communication circuit is connected to the first antenna 10 through the first switch 61 and the second switch 62 .
  • the first connection terminal RF1 of the first switch 61 is connected to the third connection terminal RF3 of the first switch 61 based on the first switching path control signal, and based on the second switching path
  • the control signal, the first connection terminal RF5 of the second switch 62 is connected to the third connection terminal ANT1 of the second switch 62, so that the first antenna 10 is used for receiving the diversity signal of broadband communication, because the first antenna 10 is external Compared with the built-in antenna, the second antenna 20 and the third antenna 30 are more efficient, thereby improving the diversity reception performance of broadband communications.
  • the second connection terminal RF2 of the first switch 61 is connected to the third connection terminal RF3 of the first switch 61 , and the first connection terminal RF5 of the second switch 62 is connected to The third connection terminal ANT1 of the second switch 62 is connected, so that the broadband communication circuit is connected to the second antenna 20 through the first switch 61 and the second switch 62 .
  • the second connection terminal RF2 of the first switch 61 is connected to the third connection terminal RF3 of the first switch 61 based on the first switching path control signal.
  • the control signal, the first connection terminal RF5 of the second switch 62 is connected to the third connection terminal ANT1 of the second switch 62, so that the second antenna 20 is applied to the reception of the diversity signal of broadband communication, because the second antenna 20 is compared with The third antenna 30 has higher efficiency, thereby improving the diversity reception performance of broadband communication.
  • the second connection terminal RF6 of the second switch 62 is connected to the third connection terminal ANT1 of the second switch 62 so that the broadband communication circuit is connected through the second switch 62 to the third antenna 30.
  • the narrowband communication circuit 70 transmits and receives narrowband signals through the first type filter circuit 40 to connect to the first antenna 10 for narrowband processing.
  • Communication when the broadband communication circuit 80 is transmitting and receiving the main signal, the second connection terminal RF2 of the first switch 61 is connected to the fourth connection terminal RF4, and the broadband communication circuit 80 is connected to the second antenna 20 through the first switch 61 to perform the main signal.
  • the wideband communication circuit 80 When receiving diversity signals, the wideband communication circuit 80 connects the second connection end RF6 of the second switch 62 to its third connection end ANT1, and the wideband communication circuit 80 connects to the third antenna 30 through the second switch 62 to perform diversity. Signal reception.
  • the narrowband communication circuit 70 is connected to the first antenna 10 through the first type filter circuit 40 when transmitting and receiving narrowband signals, and the broadband communication circuit 80 is transmitting and receiving the main set signal.
  • the second connection terminal RF2 of the first switch 61 is connected to the fourth connection terminal RF4
  • the broadband communication circuit 80 is connected to the second antenna 20 through the first switch 61 to transmit and receive the main set signal
  • the broadband communication circuit 80 receives the diversity signal when , the first connection terminal RF1 of the first switch 61 is connected to the third connection terminal RF3, the first connection terminal RF5 of the second switch 62 is connected to its third connection terminal ANT1, and the broadband communication circuit 80 passes through the first switch 61 and the second switch 62 is connected to the first antenna 10 to receive the diversity signal to improve the reception capability of the diversity signal.
  • the broadband communication circuit 80 when the broadband communication circuit 80 transmits and receives the main set signal through the second antenna 20 and receives the diversity signal, the receiving capabilities of the first antenna 10 and the third antenna 30 can be compared, and the first antenna 10 can be selected. and the third antenna 30 with better reception ability is connected; when the broadband communication circuit 80 transmits and receives the main set signal through the first antenna 10, and when receiving the diversity signal, the second antenna 20 and the third antenna 30 can be compared. According to the receiving ability, select the one with better receiving ability among the second antenna 20 and the third antenna 30 to access.
  • the narrowband communication circuit 70 still connects to the first antenna 10 through the first type filter circuit 40 to perform narrowband communication when transmitting and receiving narrowband signals, and the wideband communication circuit 80 performs main set signal processing.
  • the first connection terminal RF1 of the first switch 61 is connected to the fourth connection terminal RF4, and the broadband communication circuit 80 is connected to the first antenna 10 through the first switch 61 to transmit and receive main set signals.
  • the linkage antenna circuit 100 of the present application optimizes the circuit design by setting the switch circuit switch 60 and integrates the business logic correlation, so that each antenna channel can be fully shared and switched in real time.
  • the antenna coverage efficiency during broadband communications is improved, and the overall transceiver capability of the terminal is improved, thus improving the user experience.
  • Figure 3 is a schematic structural diagram of a third embodiment of a linkage antenna circuit of the present application.
  • the switch circuit 60 of this embodiment also includes a coupling filter module 63 and a third switch 64. and a second antenna switch 65.
  • the fourth connection terminal RF4 of the first switch 61 is connected to the broadband communication circuit 80 through the coupling filter module 63 .
  • the third switch 64 includes a first connection terminal RF7, a second connection terminal RF8 and a third connection terminal ANT2, wherein the first connection terminal RF7 of the third switch 64 is connected to the coupling filter module 63, and the third connection terminal of the third switch 64 Terminal ANT2 is connected to the broadband communication circuit 80 .
  • the third switch 64 and the second switch 62 are both single-pole double-throw switches, which will not be described again.
  • the second antenna switching switch 65 includes at least one transmitting and receiving terminal TRX1, an antenna terminal ANT_IN1 and a control power feedback terminal CPL, wherein the second connection terminal RF2 of the first switch 61 is connected to a transmitting and receiving terminal TRX1 of the second antenna switching switch 65,
  • the second antenna 20 is connected to the antenna terminal ANT_IN1 of the second antenna switch 65 to connect the second antenna 20 and the first switch 61 through the second antenna switch 65.
  • the second connection terminal RF8 of the third switch 64 is connected to the second antenna terminal ANT_IN1.
  • the control power feedback terminal CPL of the two-antenna switching switch 65 is.
  • the second antenna switch 65 is a Mobile Industry Processor Interface (MIPI) logic control device, which is set as the main antenna switch. Its main function is to switch the antenna terminal ANT_IN1 according to the control instruction. The signal is switched to a certain sending and receiving end at a certain moment, and the specific switching channel instructions are determined by the logic table of the device itself.
  • MIPI Mobile Industry Processor Interface
  • the first connection terminal RF7 of the third switch 64 is connected to the third connection terminal ANT2 of the third switch 64 , so that the broadband communication circuit 80 passes through the third switch 64 It is connected to the coupling filter module 63 to perform transmit power wave detection.
  • the second connection terminal RF8 of the third switch 64 is connected to the third connection terminal ANT2 of the third switch 64 , so that the broadband communication circuit 80 passes through the third switch 64 It is connected to the control power feedback terminal CPL of the second antenna switching switch 65 to perform transmission power wave detection.
  • the detection signal unit in the broadband communication circuit 80 detects when the main set signal is transmitted.
  • the detection signal unit passes through the third switch 64, and the third switch of the third switch 64
  • the third connection terminal ANT2 is connected to the second connection terminal RF8, and the path is connected to the control power feedback terminal CPL of the second antenna switching switch.
  • the detection signal unit passes through the third switch 64.
  • the third connection terminal ANT2 of the third switch 64 is connected to the first connection terminal RF7, and the path is connected to the coupling filter module 63, that is, the third switch 64. Select a certain detection path to access the broadband transceiver in the broadband communication circuit 80 according to the logic control instruction.
  • the coupling filter module 63 of this embodiment includes a coupler 631 and a duplex filter 632.
  • the coupler 631 includes a first connection terminal 1, a second connection terminal 2 and a third connection terminal 3.
  • the first connection end 1 of the coupler 631 is connected to the fourth connection end RF4 of the first switch 61
  • the third connection end 3 of the coupler 631 is connected to the first connection end RF7 of the third switch 64;
  • the duplex filter 632 includes The first connection terminal 4, the second connection terminal 5 and the third connection terminal 6, wherein the first connection terminal 4 of the duplex filter 632 is connected to the second connection terminal 2 of the coupler 631, and the third connection terminal of the duplex filter 632
  • the second connection terminal 5 and the third connection terminal 6 are connected to the broadband communication circuit 80 to respectively transmit the filtered reception signal to the broadband communication circuit 80 or to receive the transmission signal from the broadband communication circuit 80 and filter it before transmitting it to the coupler 631 .
  • the coupler 631 is a passive device whose main function is to couple a channel of power to the control unit in the broadband communication circuit 80 through the control power feedback terminal CPL after the transmission power is transferred from input to output.
  • the control unit determines the transmission power. the size of.
  • the duplex filter 632 is a passive component. In this embodiment, its main function is to filter the transmitted and received signals and send the filtered signals to the next unit.
  • the switch circuit 60 of this embodiment also includes a third antenna switch 66 and a filter module 67 .
  • the third antenna switching switch 66 includes at least one transmitting and receiving terminal TRX2 and an antenna terminal ANT_IN2, wherein one transmitting and receiving terminal TRX2 of the third antenna switching switch 66 is connected to the second connection terminal RF6 of the second switch 62.
  • the third antenna switching switch The antenna terminal ANT_IN2 of 66 is connected to the third antenna 30 to connect the third antenna 30 and the second switch 62 through the third antenna switching switch 66 .
  • the third antenna switching switch 66 is also a MIPI logic control device, configured as a diversity antenna switching switch, and has the same function as the second antenna switching switch 65, which will not be described again.
  • the filter module 67 is connected between the third connection terminal ANT1 of the second switch 62 and the broadband communication circuit 80 .
  • the filter module 67 can be set as a filter.
  • the main function of the filter is to filter the received signal before sending it to the next unit.
  • the switch circuit 60 is configured to select the one with stronger reception capability among the first antenna 10 and the third antenna 30 to connect to the broadband communication circuit 80, To perform reception of diversity signals in wideband communications.
  • the switch circuit 60 is configured to select the one with stronger reception ability among the second antenna 20 and the third antenna 30 to connect to the broadband communication circuit 80 to perform broadband communication. Reception of diversity signals in communications.
  • the linked antenna circuit 100 further includes a microstrip coupling circuit 90 .
  • the microstrip coupling circuit 90 is coupled to the first antenna 10 and connected to the narrowband communication circuit 70 to perform narrowband communication on the first antenna 10 . Transmit power wave test.
  • the microstrip coupler circuit 90 is connected to the control unit in the narrowband communication circuit 70 and is used to perform power detection on the first antenna 10 and provide a standing wave ratio.
  • the linkage antenna circuit 100 switches back to the default working mode to ensure the availability of the broadband communication circuit.
  • the main set signal in the broadband communication circuit 80 is transmitted, and the main set signal output from the power amplifier of the broadband communication circuit 80 passes through the second connection end 5 to the first connection end 4 of the duplex filter 632 for path output, and enters
  • the second connection terminal 2 of the coupler 631 then passes through the passage from the second connection terminal 2 of the coupler 631 to its first connection terminal 1 and enters the fourth connection terminal RF4 of the first switch 61.
  • the main set signal is transmitted through the first antenna 10, the fourth connection terminal RF4 of the first switch 61 is connected to the first connection terminal RF1, the main set signal enters the second type filter circuit 50, and is finally transmitted through the first antenna 10 , at this time, the power detection is connected to the third connection end 3 of the coupler 631 through the first connection end RF7 of the third switch 64 to its third connection end ANT2, and the coupled power is sent to the broadband transceiver in the broadband communication circuit 80 for execution. Detection.
  • the main set signal is transmitted through the second antenna 20.
  • the fourth connection of the first switch 61 Terminal RF4 is connected to its second connection terminal RF2.
  • the main set signal passes through the fourth connection terminal RF4 of the first switch 61 and its second connection terminal RF2, then enters the transmitting and receiving terminal TRX1 of the second antenna switch 65, and then passes through the second antenna.
  • the transmitting and receiving terminal TRX1 of the switch 65 passes through the antenna terminal ANT_IN1, it is finally transmitted through the second antenna 20.
  • the power detection passes through the path from the second connection terminal RF8 of the third switch to its third connection terminal ANT2, and is connected to The control power feedback terminal CPL of the second antenna switching switch 65 sends the coupled power to the broadband transceiver in the broadband communication circuit 80 for detection.
  • the main set signal reception in the broadband communication circuit 80 is controlled according to the business logic. There are two situations:
  • the second antenna 20 receives the main set signal.
  • the second antenna 20 is connected to the antenna terminal ANT_IN1.
  • the main set signal received by the antenna terminal ANT_IN1 enters the antenna terminal ANT_IN1 of the second antenna switch 65 and passes through the second antenna switch 65.
  • the signal is then sent to the broadband transceiver in the broadband communication circuit 80 through the duplex filter 632.
  • the first antenna 10 receives the main set signal, passes through the second type filter circuit 50 and enters the first connection end RF1 of the first switch 61, and then passes through the first connection end RF1 to the fourth connection end RF4 of the first switch 61.
  • the path enters the coupler 631, and then passes through the duplex filter 632 to send the main set signal to the broadband transceiver in the broadband communication circuit 80.
  • Broadband diversity signal reception in the broadband communication circuit 80 has three situations according to business logic control:
  • the third antenna 30 receives the diversity signal, passes through the path from the antenna terminal ANT_IN2 of the third antenna switching switch 66 to the transmitting and receiving terminal TRX2, then enters the second connection terminal RF6 of the second switch 62, and then passes through the second connection terminal RF6 of the second switch 62. After the passage from the second connection end RF6 to its third connection end ANT1, it enters the filter module 67, and finally passes through the passage of the filter module 67 and is sent to the broadband transceiver in the broadband communication circuit 80.
  • the first antenna 10 receives the diversity signal, passes through the second type filter circuit 50, enters the first connection terminal RF1 of the first switch 61, and then passes through the first connection terminal RF1 to the third connection terminal RF3 of the first switch 61.
  • the path enters the first connection terminal RF5 of the second switch 62, and then passes through the path from the first connection terminal RF5 of the second switch 62 to its third connection terminal ANT1, then enters the filter module 67, and finally passes through the path of the filter module 67. into the broadband transceiver in the broadband communication circuit 80.
  • the second antenna 20 receives the diversity signal, enters the ANT_IN1 port of the second antenna switch 65, passes through the path from the antenna terminal ANT_IN1 of the second antenna switch 65 to the transmitting and receiving terminal TRX1, and then enters the port of the first switch 61
  • the second connection terminal RF2 then passes through the passage from the second connection terminal RF2 to the third connection terminal RF3 of the first switch 61, enters the first connection terminal RF5 of the second switch 62, and then passes through the first connection terminal of the second switch 62.
  • the logic control terminal MIPI of the second antenna switch 65 is connected to the broadband control unit.
  • the transmitting and receiving terminal TRX1 currently used by the second antenna switching switch 65 is not fixed and can also be other TRX ports.
  • the logic control terminal MIPI of the third antenna switching switch 66 is connected to the broadband control unit.
  • the transmitting and receiving terminal TRX2 currently used by the third antenna switching switch 66 is not fixed and can also be other TRX ports.
  • the switch control ports of the first switch 61, the second switch 62 and the third switch 64 are connected to the broadband control unit, and the connection ends are not fixed and can be adjusted according to actual applications. Power supply for all units is provided by the power system.
  • FIG. 4 is a schematic structural diagram of an embodiment of the terminal of the present application.
  • the terminal 200 of this embodiment includes the linkage antenna circuit 100 disclosed in the above embodiment.
  • the terminal 200 in this embodiment may be a handheld broadband terminal, such as a walkie-talkie, etc., which is not limited here.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Transmission System (AREA)

Abstract

La présente demande divulgue un circuit de liaison d'antenne et un terminal, et concerne le domaine technique des communications. Le circuit comprend une première antenne, une deuxième antenne, une troisième antenne, un circuit de filtre de premier type, un circuit de filtre de second type, un circuit de commutation, un circuit de communication à bande étroite et un circuit de communication à large bande. Le circuit de communication à bande étroite est connecté à la première antenne au moyen du circuit de filtre de premier type ; le circuit de communication à large bande est connecté à la première antenne au moyen du circuit de commutation et du circuit de filtre de second type et est connecté à la deuxième antenne et à la troisième antenne au moyen du circuit de commutation, de sorte qu'une communication à large bande est exécutée par sélection de la première antenne et de la deuxième antenne, ou une communication à large bande est exécutée par sélection de la première antenne et de la troisième antenne, ou une communication à large bande est exécutée par sélection de la première antenne, de la deuxième antenne et de la troisième antenne. Dans la présente demande, des signaux de communication à large bande et des signaux de communication à bande étroite peuvent être transmis et reçus simultanément ou indépendamment, et des canaux d'antenne peuvent être sélectionnés de manière flexible, ce qui permet d'améliorer l'efficacité de communication à large bande et d'améliorer les capacités d'émission-réception globales.
PCT/CN2022/107175 2022-07-21 2022-07-21 Circuit de liaison d'antenne et terminal WO2024016282A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/107175 WO2024016282A1 (fr) 2022-07-21 2022-07-21 Circuit de liaison d'antenne et terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/107175 WO2024016282A1 (fr) 2022-07-21 2022-07-21 Circuit de liaison d'antenne et terminal

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WO2024016282A1 true WO2024016282A1 (fr) 2024-01-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110247692A (zh) * 2019-06-25 2019-09-17 Oppo广东移动通信有限公司 通路切换方法及相关产品
CN112886976A (zh) * 2020-12-31 2021-06-01 海能达通信股份有限公司 一种天线共享电路及终端
CN113285732A (zh) * 2021-05-24 2021-08-20 Oppo广东移动通信有限公司 射频***、天线切换方法和通信设备
CN113316899A (zh) * 2019-02-01 2021-08-27 华为技术有限公司 一种天线选择的方法、终端设备
CN114124137A (zh) * 2021-11-30 2022-03-01 Oppo广东移动通信有限公司 射频***及通信设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113316899A (zh) * 2019-02-01 2021-08-27 华为技术有限公司 一种天线选择的方法、终端设备
CN110247692A (zh) * 2019-06-25 2019-09-17 Oppo广东移动通信有限公司 通路切换方法及相关产品
CN112886976A (zh) * 2020-12-31 2021-06-01 海能达通信股份有限公司 一种天线共享电路及终端
CN113285732A (zh) * 2021-05-24 2021-08-20 Oppo广东移动通信有限公司 射频***、天线切换方法和通信设备
CN114124137A (zh) * 2021-11-30 2022-03-01 Oppo广东移动通信有限公司 射频***及通信设备

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