WO2020220886A1 - Appareil radiofréquence et dispositif terminal - Google Patents

Appareil radiofréquence et dispositif terminal Download PDF

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Publication number
WO2020220886A1
WO2020220886A1 PCT/CN2020/081728 CN2020081728W WO2020220886A1 WO 2020220886 A1 WO2020220886 A1 WO 2020220886A1 CN 2020081728 W CN2020081728 W CN 2020081728W WO 2020220886 A1 WO2020220886 A1 WO 2020220886A1
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WO
WIPO (PCT)
Prior art keywords
radio frequency
switch
path
antenna
port
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PCT/CN2020/081728
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English (en)
Chinese (zh)
Inventor
孔根升
Original Assignee
维沃移动通信有限公司
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Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2020220886A1 publication Critical patent/WO2020220886A1/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present disclosure relate to the field of electronic technology, and in particular to a radio frequency device and terminal equipment.
  • the radio frequency architecture of the related technology in order to ensure the stability of the transmission power, it is necessary to monitor the transmission power to realize the real-time control of the transmission power, which requires the introduction of a directional coupler connected in series with the transmission (Transmit, TX) and main In the Primary Receive (PRX) path, an insertion loss is introduced to both the transmit and primary receive channels. This insertion loss is also the loss caused by the directional coupler, which is generally around 0.3dB.
  • the coupling coefficient of the directional coupler is generally about 25dB, that is, when the transmit power is 23dBm, the signal amplitude that the directional coupler couples and sends to the radio frequency transceiver for power detection is about -2dBm.
  • the current will increase by about 15mA (usually, the output power of the power amplifier increases by 1dB, and the consumption current of the power amplifier increases by 50mA), which will affect the battery life of the terminal device, and thus affect the user experience to a certain extent, and , Due to the introduction of the insertion loss of the directional coupler, the receiving sensitivity of the main receiver will also be deteriorated by about 0.3dB, which will affect the RF receiving performance.
  • the radio frequency architecture in the related technology will introduce a large insertion loss, increase the power loss of the devices in the transmission and main reception paths, and affect the radio reception performance.
  • the present disclosure provides a radio frequency device and terminal equipment to solve the problem that the large insertion loss introduced by the radio frequency architecture in the related art causes the power loss of the devices in the transmitting and main receiving paths to increase, and the problem that the radio frequency receiving performance is affected.
  • an embodiment of the present disclosure provides a radio frequency device, including:
  • An antenna which is connected to the first switch
  • the path connecting device is connected to the first switch
  • Diversity receiving path and power detection path located between the radio frequency transceiver and the path connecting device;
  • the first radio frequency transmission signal sent by the radio frequency transceiver passes through the transmission and reception path and is transmitted to the antenna through the first switch.
  • the second radio frequency transmission signal in the first radio frequency transmission signal is transmitted back to the radio frequency through the path connecting device and the power detection path in turn.
  • the second radio frequency transmission signal is a part of the radio frequency transmission signal obtained by coupling the radio frequency port connected to the path connecting device through the first switch in the first radio frequency transmission signal.
  • radio frequency device including:
  • An antenna which is connected to the first switch
  • the first radio frequency transmission signal sent by the radio frequency transceiver passes through the transmission and reception path and is transmitted to the antenna through the first switch, and the second radio frequency transmission signal in the first radio frequency transmission signal is transmitted back to the radio frequency transceiver through the power detection path.
  • the radio frequency transmission signal is a part of the radio frequency transmission signal obtained by coupling the radio frequency port connected to the power detection path through the first switch in the first radio frequency transmission signal.
  • an embodiment of the present disclosure provides a terminal device, including the radio frequency device provided in the embodiment of the first aspect.
  • an embodiment of the present disclosure provides a terminal device, including the radio frequency device provided in the embodiment of the second aspect.
  • the power monitoring of the first radio frequency transmission signal transmitted by the transmission and reception path is realized through the power detection path between the radio frequency transceiver and the first switch, and the directional coupler of related technology can be eliminated. That is, the insertion loss of the directional coupler in the transmitting and receiving path in the related technology is canceled, so that the power consumption of the device in the transmitting and receiving path can be reduced under the same transmission power, and the receiving sensitivity of the main receiver will not be affected, and the radio frequency can be improved. Receiving performance.
  • Figure 1 shows one of the schematic structural diagrams of a radio frequency device provided by an embodiment of the present disclosure
  • FIG. 2 shows the second structural diagram of a radio frequency device provided by an embodiment of the present disclosure
  • FIG. 3 shows the third structural diagram of a radio frequency device provided by an embodiment of the present disclosure
  • FIG. 4 shows the fourth structural diagram of the radio frequency device provided by the embodiment of the present disclosure.
  • FIG. 1 shows one of the schematic structural diagrams of the radio frequency device provided by the embodiment of the present disclosure
  • FIG. 2 shows the second schematic structural diagram of the radio frequency device provided by the embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a radio frequency device, which may include: a radio frequency transceiver 10; a first switch 20; an antenna 30, where the antenna 30 is connected to the first switch 20; a path connecting device, a path connecting device Connected to the first switch 20; the transmitting and receiving path 40 between the radio frequency transceiver 10 and the first switch 20; the diversity receiving path 60 and the power detecting path 50 between the radio frequency transceiver 10 and the path connecting device.
  • the first radio frequency transmission signal sent by the radio frequency transceiver 10 passes through the transmission and reception path 40 and is transmitted to the antenna 30 through the first switch 20.
  • the second radio frequency transmission signal in the first radio frequency transmission signal sequentially passes through the path connection device and the power detection
  • the path 50 is transmitted back to the radio frequency transceiver 10, where the second radio frequency transmission signal is a part of the radio frequency transmission signal obtained by coupling the radio frequency port connected to the path connection device via the first switch 20 in the first radio frequency transmission signal.
  • the antenna 30 is used to receive electromagnetic waves in space and convert them into the main set reception signal, and transmit the main set reception signal to the first switch 20, and receive the first switch 20 transmitted through the transmitting and receiving path 40 and the first switch 20.
  • a radio frequency transmission signal, and the first radio frequency transmission signal is converted into a space electromagnetic wave and transmitted;
  • the radio frequency transceiver 10 is used to receive the downlink main set reception signal transmitted through the first switch 20 and the transmission and reception path 40, and the reception sequentially passes through the first The switch 20, the path connecting device, and the downlink diversity reception signal transmitted by the diversity reception path 60, and output the uplink first radio frequency transmission signal and transmit it to the transmission and reception path 40.
  • the radio frequency transceiver 10 is also used to receive the transmission via the power detection path 50 Part of the first radio frequency transmission signal (ie, the second radio frequency transmission signal), and completes the power monitoring of the first radio frequency transmission signal.
  • the first switch 20 may include at least two radio frequency ports and at least one antenna port, the transmitting and receiving path 40 and the path connecting device are respectively connected to different radio frequency ports of the first switch 20, and the antenna of the first switch 20 The port is connected to the antenna 30; after the antenna 30 converts the downlink main set reception signal, the main set reception signal is transmitted to the antenna port of the first switch 20, and the main set reception signal is transmitted through the first switch 20 and the transmit and receive channel 40 in turn To the radio frequency transceiver 10, so that the radio frequency transceiver 10 receives the main set reception signal; after the antenna 30 transforms the downlink diversity reception signal, the diversity reception signal passes through the first switch 20 and the path connecting device in turn, and then passes through the diversity reception path 60 is transmitted to the radio frequency transceiver 10, so that the radio frequency transceiver 10 receives the diversity reception signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first radio frequency transmission signal sequentially passes through the transmission and reception path 40 and the first
  • the switch 20 is transmitted to the antenna 30, so that the antenna 30 converts the first radio frequency transmission signal and transmits it.
  • the isolation between the radio frequency ports of the switch ie, the first switch 20
  • the coefficient is equivalent, that is, the isolation is about 25dB.
  • the first radio frequency transmission signal is transmitted to the radio frequency port of the first switch 20 and the transmitting and receiving channel 40, a part of the first radio frequency transmission signal (that is, the second radio frequency transmission signal) Leak from the radio frequency port to another radio frequency port connected to the path connecting device on the first switch 20, so that the first switch 20 is coupled with another radio frequency port connected to the path connecting device to obtain a part of the first radio frequency transmission signal, that is, the second A radio frequency transmission signal, the signal amplitude of the second radio frequency transmission signal is equivalent to the signal amplitude coupled by a directional coupler in the related art, and the second radio frequency transmission signal is transmitted back to the radio frequency transceiver 10 through the path connecting device and the power detection path 50 in turn, For the radio frequency transceiver 10 to complete the power monitoring of the first radio frequency transmission signal.
  • the first radio frequency transmission signal that is, the second radio frequency transmission signal
  • the first switch 20 is connected to the path
  • the second radio frequency signal obtained by coupling the radio frequency port to which the device is connected is transmitted to the radio frequency transceiver 10, thereby realizing the power monitoring of the first radio frequency transmitting signal transmitted by the transmitting and receiving path 40, and the directional coupler in the related technology can be canceled, that is, cancel
  • the insertion loss of the directional coupler in the transmitting and receiving path 40 in the related art can be reduced, so that the power consumption of the device in the transmitting and receiving path 40 can be reduced under the same transmission power, and the receiving sensitivity of the main receiver will not be affected, and the radio frequency can be improved. Receiving performance.
  • the antenna 10 may include a first antenna and a second antenna, and the first antenna and the second antenna are respectively connected to different antenna ports of the first switch 20, and the first switch 20 is used to realize radio frequency signals between the two antennas.
  • the two antennas can be switched freely according to different user scenarios (the specific switching algorithm is not described here), that is, the first antenna and the second antenna are used to ensure that the radio frequency device realizes radio frequency signal transmission/main collection and diversity reception, thereby improving the user terminal Communication quality. That is to say, according to say, according to say, according to user scenario requirements, the first antenna in the antenna 10 can be used to achieve radio frequency signal transmission and main set reception, and the second antenna in the antenna 10 can be used to achieve diversity reception of radio frequency signals, or the antenna 10 can also be used.
  • the second antenna in the antenna 10 realizes the transmission of radio frequency signals and the main set reception, and the first antenna in the antenna 10 realizes the diversity reception of radio frequency signals.
  • the radio frequency device may be a radio frequency device of Time Division Duplexing (TDD) standard
  • the transmit and receive path 40 may include a first antenna switch 41 , And the transmitting path 43 and the main receiving path 44 between the radio frequency transceiver 10 and the first antenna switch 41.
  • TDD Time Division Duplexing
  • a first antenna switch 41 is connected in series in the transmitting and receiving path 40, and the first antenna switch 41 is connected with the radio frequency transceiver 10 to form a transmission path for transmitting the radio frequency transmission signal emitted by the radio frequency transceiver 10. 43 and the main set receiving path 44 used to transmit the main set receiving signal converted by the antenna 30.
  • the first antenna switch 41 is used to realize the connection between the different transmitting paths 43 and the main set receiving path 44 and the antenna 10.
  • the main set reception signal is transmitted to the first antenna switch 41 through the first switch 20, and the first antenna switch 41 turns on the corresponding main set reception path 44, and the main set reception signal passes through
  • the corresponding main set receiving path 44 is transmitted to the radio frequency transceiver 10, so that the radio frequency transceiver 10 receives the main set receiving signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first antenna switch 41 is turned on accordingly
  • the first radio frequency transmission signal is transmitted to the antenna 30 by the radio frequency transceiver 10 through the corresponding transmission path 43, the first antenna switch 41 and the first switch 20 in turn, so that the antenna 30 converts the first radio frequency transmission signal and transmits it, wherein, when the first radio frequency transmission signal is transmitted to the first switch 20, a part of the first radio frequency transmission signal, that is, the second radio frequency transmission signal, will be transmitted back to the radio frequency transceiver 10 through the path connecting device and the power detection path 50 in turn for The radio frequency transceiver
  • the illustrated connection of the transmitting and receiving ports of the first antenna switch 41 (ie TRX1, TRX2...TRXn) is only for illustrative purposes, and only the first antenna switch 41 is shown in FIG. 1
  • the connection of the transceiver port can be set by analogy based on the transceiver port TRX1 and TRX2.
  • the transmitting path 43 is connected to the transceiver port TRX1 of the first antenna switch 41
  • the main receiving path 44 is connected to the transceiver port TRX2 of the first antenna switch 41
  • the antenna port ANT of the first antenna switch 41 is connected to the first antenna switch 41.
  • One of the radio frequency ports of the switch 20 is connected; in actual use, according to the actual radio frequency requirements, multiple sets of transmission channels 43 and main reception channels 44 for different frequency band requirements can be set, and they are respectively connected to different transceiver ports of the first antenna switch 41 connection.
  • the first switch 20 has a first radio frequency port and a second radio frequency port; the first radio frequency port of the first switch 20 is connected to the transmitting and receiving path 40;
  • the device may be a second switch 51, wherein the third radio frequency port of the second switch 51 is connected to the radio frequency transceiver 10, the fourth radio frequency port of the second switch 51 is connected to the diversity receiving path 60, and the antenna terminal of the second switch 51 is connected to The second radio frequency port of the first switch 20 is connected.
  • the first switch 20 may have two radio frequency ports, namely a first radio frequency port and a second radio frequency port;
  • the path connecting device may be a switching device, namely a second switch 51, and the second switch 51 may have two radio frequency ports.
  • the radio frequency ports that is, the third radio frequency port and the fourth radio frequency port, the second switch 51 is used to realize the on or off of the power detection path 50 and the on or off of the diversity receiving path 60.
  • the antenna 30 transforms the downlink diversity reception signal
  • the diversity reception signal is transmitted to the second switch 51 through the first switch 20, and the second switch 51 is connected to the diversity reception path 60 through the fourth radio frequency port, and the diversity reception signal is received through diversity.
  • the path 60 is transmitted to the radio frequency transceiver 10 so that the radio frequency transceiver 10 receives the diversity reception signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first antenna switch 41 turns on the corresponding transmission path 43.
  • a radio frequency transmission signal is transmitted to the antenna 30 by the radio frequency transceiver 10 through the corresponding transmission path 43, the first antenna switch 41 and the first switch 20 in turn, so that the antenna 30 converts the first radio frequency transmission signal and transmits it.
  • the second switch 51 is connected to the radio frequency transceiver 10 through the third radio frequency port to conduct the power detection path 50.
  • the second switch 51 may be a single-pole double-throw switch.
  • the radio frequency device may be a frequency division duplex (Frequency Division Duplexing, FDD) radio frequency device
  • the transmit and receive path 40 may include the first combined circuit.
  • the first antenna switch 41, the transmitting path 43 and the main receiving path 44 between the radio frequency transceiver 10 and the first combiner 42, the first antenna switch 41 is connected in series to the first combiner 42 and the first combiner 42 One switch between 20.
  • a first combiner 42 and a first antenna switch 41 are connected in series in the transmit and receive path 40, and the first combiner 42 and The radio frequency transceivers 10 are connected to form a transmission path 43 for transmitting the first radio frequency transmission signal sent by the radio frequency transceiver 10 and a main receiving path 44 for transmitting the main receiving signal converted by the antenna 30.
  • the first antenna switch 41 is connected to the first combiner 42 to realize the connection between the different transmitting paths 43 and the main receiving path 44 and the antenna 10.
  • the main set reception signal is transmitted to the first antenna switch 41 through the first switch 20, and the first antenna switch 41 is connected to the corresponding first combiner 42 to turn on the corresponding The main set receiving path 44, the main set receiving signal is transmitted to the radio frequency transceiver 10 through the corresponding first combiner 42 and the main set receiving path 44 in turn, so that the radio frequency transceiver 10 receives the main set receiving signal;
  • the first antenna switch 41 is connected to the corresponding first combiner 42 to turn on the corresponding transmission path 43.
  • the first radio frequency transmission signal is sequentially passed through the corresponding radio frequency transceiver 10
  • the transmission path 43, the first combiner 42, the first antenna switch 41 and the first switch 20 are transmitted to the antenna 30 so that the antenna 30 converts and transmits the first radio frequency transmission signal, wherein the first radio frequency transmission signal is transmitted to the first
  • the switch 20 is turned on, a part of the first radio frequency transmission signal, that is, the second radio frequency transmission signal, will be transmitted back to the radio frequency transceiver 10 through the path connecting device and the power detection path 50 in turn, so that the radio frequency transceiver 10 can complete the first radio frequency transmission signal Power monitoring.
  • the illustrated connection of the transmitting and receiving ports (ie TRX1...TRXn) of the first antenna switch 41 is only for illustrative purposes, and only part of the first antenna switch 41 is shown in FIG.
  • the connection example of the transceiver port, the connection status of the other transceiver ports can be set by analogy according to the transceiver port TRX1.
  • the transmission path 43 and the different signal ports respectively connected to the first combiner 42 are then connected to the transceiver port TRX1 of the first antenna switch 41 through the common port of the first combiner 42.
  • the first antenna The antenna port ANT of the switch 41 is connected to one of the radio frequency ports of the first switch 20; in actual use, according to the actual radio frequency requirements, multiple groups of the transmitting path 43 and the main receiving path 44 for different frequency band requirements can be set, and respectively connected with
  • the multiple first combiners 42 connected to the corresponding transmitting path 43 and the main set receiving path 44 are respectively connected to different transceiver ports of the first antenna switch 41 through the multiple first combiners 42.
  • the first switch 20 has a fifth radio frequency port and a sixth radio frequency port; the fifth radio frequency port of the first switch 20 is connected to the transmitting and receiving path 40;
  • the device has a second combiner 52, wherein the first signal port of the second combiner 52 is connected to the radio frequency transceiver 10, the second signal port of the second combiner 52 is connected to the diversity receiving path 60, and the second signal port of the second combiner 52 is connected to the diversity receiving path 60.
  • the common port of the combiner 52 is connected to the sixth radio frequency port of the first switch 20.
  • the first switch 20 may have two radio frequency ports, namely the fifth radio frequency port and the sixth radio frequency port;
  • the path connecting device may be a combiner device, namely the second combiner 52, the second combiner 52
  • the device 52 is used to realize the transmission of the first radio frequency transmission signal on the power detection path 50 between the radio frequency transceiver 10 and the first switch 20, and to realize the diversity reception signal on the diversity reception path 60 between the radio frequency transceiver 10 and the first switch 20.
  • the transmission between the switches 20 can be realized, and the mutual influence of the transmission between the two can be avoided, so that the simultaneous transmission of the second radio frequency transmission signal on the power detection path 50 and the diversity reception signal on the diversity reception path 60 can be realized without affecting each other.
  • Both channels can carry out signal transmission at the same time.
  • the antenna 30 converts the downlink diversity reception signal
  • the diversity reception signal is transmitted to the second combiner 52 through the first switch 20, and the second combiner 52 transmits the diversity reception signal to the diversity reception path 60 through the second signal port.
  • the radio frequency transceiver 10 And transmit to the radio frequency transceiver 10 through the diversity receiving path 60, so that the radio frequency transceiver 10 receives the diversity reception signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first antenna switch 41 is connected to the corresponding The first combiner 42 turns on the corresponding transmission path 43, and the first radio frequency transmission signal is sequentially passed through the corresponding transmission path 43, the first combiner 42, the first antenna switch 41, and the first switch by the radio frequency transceiver 10 20 is transmitted to the antenna 30, so that the antenna 30 converts the first radio frequency transmission signal and transmits it.
  • the first radio frequency transmission signal is transmitted to the first switch 20, part of the first radio frequency transmission signal, that is, the second radio frequency transmission signal,
  • the first signal port of the second combiner 52 is transmitted on the power detection path 50 and transmitted back to the radio frequency transceiver 10 for the radio frequency transceiver 10 to complete the power monitoring of the radio frequency transmission signal.
  • the transmission path 43 may include: a power amplifier 431 and a transmission filter 432, in the direction from the radio frequency transceiver 10 to the first switch 20 ,
  • the transmission path 43 is connected in series with the power amplifier 431 and the transmission filter 432 in sequence
  • the main set receiving path 44 may include: the main set receiving filter 44, the main set receiving filter 44 is connected in series to the first antenna switch 41 and the radio frequency transceiver Between 10.
  • the power amplifier 431 is used to amplify the first radio frequency transmission signal sent by the radio frequency transceiver 10, so as to increase the effective communication distance between the terminal equipment and the base station;
  • the transmission filter 432 as a frequency selection device, is used to The transmitted signal is filtered to meet electromagnetic compatibility (Electro Magnetic Compatibility, EMC) requirements;
  • the main set receiving filter 44 is used to filter the received main set receiving signal to improve the anti-interference performance of the radio frequency device.
  • the diversity receiving path 60 may include: a diversity receiving filter 61 and a second antenna switch 62, from the radio frequency transceiver 10 to the first switch In the direction of 20, a diversity receiving filter 61 and a second antenna switch 62 are sequentially connected in series in the diversity receiving path 60.
  • the diversity receiving filter 61 is used to filter the diversity receiving signal to improve the anti-interference performance of the radio frequency device;
  • the second antenna switch 62 is used to realize the connection between the antenna 10 and different diversity receiving paths 60. It can be understood that the connection of the diversity receiving ports (ie DRX1, DRX2...DRXn) of the second antenna switch 62 shown in FIGS.
  • connection example of part of the diversity receiving port of the second antenna switch 62 is shown, and the connection status of the remaining diversity receiving ports can be set by analogy according to the diversity receiving port DRX1.
  • multiple groups of diversity receiving paths 60 for different frequency band requirements can be set according to actual radio frequency requirements, and each diversity receiving path 60 corresponds to a different diversity receiving port connected to the second antenna switch 62.
  • the diversity receiving port DRX1, diversity receiving filter 61, and radio frequency transceiver 10 of the second antenna switch 62 are connected in sequence to form a diversity receiving path 60.
  • the antenna port ANT of the second antenna switch 62 is connected to that of the second switch 51.
  • the fourth radio frequency port is connected; as shown in Figure 2, the diversity receiving port DRX1, diversity receiving filter 61, and radio frequency transceiver 10 of the second antenna switch 62 are connected in sequence to form a diversity receiving path 60, and the antenna port ANT of the second antenna switch 62 Connect with the second signal port of the second combiner 52.
  • the radio frequency device may further include a modem 70, which is respectively connected to the radio frequency transceiver 10 and the path connecting device.
  • the modem 70 is used to demodulate the radio frequency reception signal (including the main set reception signal and the diversity reception signal) received by the radio frequency transceiver 10, and to send the modulated first radio frequency transmission signal carrying useful information to The radio frequency transceiver 10; and the modem 70 is also used to control the operation of the channel connection device.
  • the modem 70 can also control the radio frequency transceiver 10 and other devices of the radio frequency front end of the radio frequency device (for example, the first switch 20, the first antenna switch 41, the second antenna switch 52 and other switches and power amplifiers, etc.) jobs.
  • the radio frequency device provided by the embodiment of the present disclosure, through the power detection path 50 between the radio frequency transceiver 10 and the path connecting device, when the first radio frequency transmission signal passes through the first switch 20 by the radio frequency transceiver 10, the first switch 20 The second radio frequency signal obtained by coupling with the radio frequency port connected to the channel connecting device is transmitted to the radio frequency transceiver 10, thereby realizing the power monitoring of the first radio frequency transmitting signal transmitted by the transmitting and receiving channel 40, and the directional coupler in the related art can be eliminated.
  • the insertion loss of the directional coupler in the transmitting and receiving path 40 in the related art is cancelled, so that the power consumption of the device in the transmitting and receiving path 40 can be reduced under the same transmission power, and the receiving sensitivity of the main set receiving will not be affected at the same time, Can improve radio frequency receiving performance.
  • an embodiment of the present disclosure provides a terminal device including the above-mentioned radio frequency device.
  • the terminal device may be a mobile phone or a tablet computer.
  • the terminal device is not limited to mobile phones and tablet computers, and can be electronic devices with radio frequency functions such as a laptop computer (Laptop Computer) or a personal digital assistant (Personal Digital Assistant, PDA).
  • the terminal equipment with the above radio frequency device because the radio frequency device cancels the insertion loss of the directional coupler in the transmitting and receiving path in the related art, so that the devices in the transmitting and receiving path can be reduced under the same transmission power.
  • Power consumption while not affecting the receiving sensitivity of the main receiver, can improve the RF receiving performance, so it is beneficial to reduce the power consumption of the terminal equipment, improve and enhance the battery life of the terminal equipment, and ensure the reliability of the RF receiving performance of the terminal equipment Sex and stability.
  • FIG. 3 shows the third structural schematic diagram of the radio frequency device provided by the embodiment of the present disclosure
  • FIG. 4 shows the fourth structural schematic diagram of the radio frequency device provided by the embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a radio frequency device, which may include: a radio frequency transceiver 10; a first switch 20; an antenna 30, where the antenna 30 is connected to the first switch 20; A transmitting and receiving path 40, a power detecting path 50 and a diversity receiving path 60 between a switch 20.
  • the first radio frequency transmission signal from the radio frequency transceiver 10 passes through the transmission and reception path 40 and is transmitted to the antenna 30 through the first switch 20, and the second radio frequency transmission signal in the first radio frequency transmission signal is transmitted back to the radio frequency through the power detection path 50.
  • the second radio frequency transmission signal is a part of the radio frequency transmission signal obtained by coupling the radio frequency port connected to the power detection path 50 through the first switch 20 in the first radio frequency transmission signal.
  • the antenna 30 is used to receive electromagnetic waves in space and convert them into the main set reception signal, and transmit the main set reception signal to the first switch 20, and receive the first switch 20 transmitted through the transmitting and receiving path 40 and the first switch 20.
  • a radio frequency transmission signal, and the first radio frequency transmission signal is converted into a space electromagnetic wave and transmitted;
  • the radio frequency transceiver 10 is used to receive the downlink main set reception signal transmitted through the first switch 20 and the transmission and reception path 40, and the reception sequentially passes through the first
  • the switch 20 and the diversity reception path 60 transmit the downlink diversity reception signal, and output the uplink first radio frequency transmission signal and transmit it to the transmission reception path 40.
  • the radio frequency transceiver 10 is also used to receive a part of the first transmission signal transmitted through the power detection path 50.
  • the radio frequency transmission signal that is, the second radio frequency transmission signal
  • the power monitoring of the first radio frequency transmission signal is completed.
  • the first switch 20 may include at least three radio frequency ports and at least one antenna port.
  • the transmitting and receiving path 40, the power detecting path 50 and the diversity receiving path 60 are respectively connected to different radio frequency ports of the first switch 20,
  • the antenna port of the first switch 20 is connected to the antenna 30; after the antenna 30 transforms the downlink main set reception signal, the main set reception signal is transmitted to the antenna port of the first switch 20, and the main set reception signal passes through the first switch 20 in turn
  • the transmit and receive path 40 is transmitted to the radio frequency transceiver 10 so that the radio frequency transceiver 10 receives the main set of received signals; after the antenna 30 transforms the downlink diversity receive signal, the diversity receive signal passes through the first switch 20 and the diversity receive path in turn 60 is transmitted to the radio frequency transceiver 10, so that the radio frequency transceiver 10 receives the diversity reception signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first radio frequency transmission signal sequentially passes through the transmission and reception path 40 and the first radio
  • the switch 20 is transmitted to the antenna 30, so that the antenna 30 converts the first radio frequency transmission signal and transmits it.
  • the isolation between the radio frequency ports of the switch ie, the first switch 20
  • the coefficient is equivalent, that is, the isolation is about 25dB.
  • the first radio frequency transmission signal is transmitted to the radio frequency port of the first switch 20 and the transmitting and receiving channel 40, a part of the first radio frequency transmission signal (that is, the second radio frequency transmission signal) Leak from the radio frequency port to another radio frequency port connected to the power detection path 50 on the first switch 20, so that the first switch 20 and another radio frequency port connected to the power detection path 50 are coupled to obtain a part of the first radio frequency transmission signal, namely The second radio frequency transmission signal, the signal amplitude of the second radio frequency transmission signal is equivalent to the signal amplitude coupled by the directional coupler in the related art, and the second radio frequency transmission signal is transmitted back to the radio frequency transceiver 10 through the power detection path 50 for the radio frequency
  • the transceiver 10 completes the power monitoring of the first radio frequency transmission signal.
  • the first switch 20 is connected to the power
  • the second radio frequency signal obtained by coupling the radio frequency port connected to the detection path 50 is transmitted to the radio frequency transceiver 10, thereby realizing the power monitoring of the first radio frequency transmission signal transmitted by the transmitting and receiving path 40, and the directional coupler in the related technology can be eliminated.
  • the insertion loss of the directional coupler in the transmitting and receiving path 40 in the related art is cancelled, so that the power consumption of the device in the transmitting and receiving path 40 can be reduced under the same transmission power, and the receiving sensitivity of the main set receiving will not be affected. Improve radio frequency reception performance.
  • the first switch 20 has a seventh radio frequency port, an eighth radio frequency port, and a ninth radio frequency port
  • the transmit and receive path 40 is connected to the seventh radio frequency port
  • the power detection path 50 is connected to the eighth radio frequency port.
  • Port connection, the diversity receiving path 60 is connected to the ninth radio frequency port.
  • the first switch 20 may have three radio frequency ports, namely the seventh radio frequency port, the eighth radio frequency port and the ninth radio frequency port. After the antenna 30 transforms the downlink main set reception signal, the main set receives The signal is transmitted to the antenna port of the first switch 20. The first switch 20 is connected to the transmitting and receiving path 40 through the seventh radio frequency port. The main set of received signals is transmitted to the radio frequency transceiver 10 through the first switch 20 and the transmitting and receiving path 40 in turn.
  • the radio frequency transceiver 10 receives the main set reception signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first switch 20 is connected to the transmission and reception path through the seventh radio frequency port, and the first radio frequency transmission signal It is transmitted to the antenna 30 through the transmitting and receiving path 40 and the first switch 20 in sequence, so that the antenna 30 converts and transmits the first radio frequency transmission signal.
  • the first switch 20 passes through the The eight radio frequency ports are connected to the power detection path 50.
  • a part of the first radio frequency transmission signal that is, the second radio frequency transmission signal, will be transmitted back to the radio frequency transceiver 10 through the power detection path 50 for the radio frequency transceiver 10 to complete the radio frequency transmission signal Power monitoring; after the antenna 30 transforms the downlink diversity reception signal, the diversity reception signal is transmitted to the antenna port of the first switch 20, the first switch 20 is connected to the diversity reception path 60 through the ninth radio frequency port, and the diversity reception signal passes through The first switch 20 and the diversity reception path 60 are transmitted to the radio frequency transceiver 10 so that the radio frequency transceiver 10 receives the diversity reception signal.
  • the radio frequency device can be applied regardless of the FDD system or the TDD system.
  • the first switch 20 may be a double pole three throw switch or a three pole three throw switch.
  • the antenna 10 may include a first antenna and a second antenna, and the first antenna and the second antenna are respectively connected to different antenna ports of the first switch 20, and the first switch 20 is used to realize radio frequency signals between the two antennas.
  • the two antennas can be switched freely according to different user scenarios (the specific switching algorithm is not described here), that is, the first antenna and the second antenna are used to ensure that the radio frequency device realizes radio frequency signal transmission/main collection and diversity reception, thereby improving the user terminal Communication quality. That is to say, according to say, according to say, according to user scenario requirements, the first antenna in the antenna 10 can be used to achieve radio frequency signal transmission and main set reception, and the second antenna in the antenna 10 can be used to achieve diversity reception of radio frequency signals, or the antenna 10 can also be used.
  • the second antenna in the antenna 10 realizes the transmission of radio frequency signals and the main set reception, and the first antenna in the antenna 10 realizes the diversity reception of radio frequency signals.
  • the radio frequency device may be a radio frequency device of the TDD standard
  • the transmit and receive path 40 may include a first antenna switch 41, and is located between the radio frequency transceiver 10 and the second antenna.
  • a first antenna switch 41 is connected in series in the transmitting and receiving path 40, and the first antenna switch 41 is connected with the radio frequency transceiver 10 to form a transmission path for transmitting the radio frequency transmission signal emitted by the radio frequency transceiver 10. 43 and the main set receiving path 44 used to transmit the main set receiving signal converted by the antenna 30.
  • the first antenna switch 41 is used to realize the connection between the different transmitting paths 43 and the main set receiving path 44 and the antenna 10.
  • the main set reception signal is transmitted to the first antenna switch 41 through the first switch 20, and the first antenna switch 41 turns on the corresponding main set reception path 44, and the main set reception signal passes through
  • the corresponding main set receiving path 44 is transmitted to the radio frequency transceiver 10, so that the radio frequency transceiver 10 receives the main set receiving signal; after the radio frequency transceiver 10 outputs the uplink first radio frequency transmission signal, the first antenna switch 41 is turned on accordingly
  • the first radio frequency transmission signal is transmitted to the antenna 30 by the radio frequency transceiver 10 through the corresponding transmission path 43, the first antenna switch 41 and the first switch 20 in turn, so that the antenna 30 converts the first radio frequency transmission signal and transmits it, wherein, when the first radio frequency transmission signal is transmitted to the first switch 20, a part of the first radio frequency transmission signal, that is, the second radio frequency transmission signal, will be transmitted back to the radio frequency transceiver 10 through the power detection path 50 for the radio frequency transceiver 10 to complete Power monitoring of the
  • the illustrated connection of the transmitting and receiving ports of the first antenna switch 41 (ie TRX1, TRX2...TRXn) is only for illustrative purposes, and only the first antenna switch 41 is shown in FIG.
  • the connection of the transceiver port the connection of the other transceiver ports can be set by analogy based on the transceiver port TRX1 and TRX2.
  • the transmitting path 43 is connected to the transceiver port TRX1 of the first antenna switch 41
  • the main receiving path 44 is connected to the transceiver port TRX2 of the first antenna switch 41
  • the antenna port ANT of the first antenna switch 41 is connected to the first antenna switch 41.
  • One of the radio frequency ports of the switch 20 is connected; in actual use, according to the actual radio frequency requirements, multiple sets of transmission channels 43 and main reception channels 44 for different frequency band requirements can be set, and they are respectively connected to different transceiver ports of the first antenna switch 41 connection.
  • the radio frequency device may be an FDD radio frequency device
  • the transmit and receive path 40 may include a first combiner 42, a first antenna switch 41, and a The transmitting path 43 and the main receiving path 44 between the radio frequency transceiver 10 and the first combiner 42.
  • the first antenna switch 41 is connected in series between the first combiner 42 and the first switch 20.
  • a first combiner 42 and a first antenna switch 41 are connected in series in the transmit and receive path 40, and the first combiner 42 and The radio frequency transceivers 10 are connected to form a transmission path 43 for transmitting the first radio frequency transmission signal sent by the radio frequency transceiver 10 and a main receiving path 44 for transmitting the main receiving signal converted by the antenna 30.
  • the first antenna switch 41 is connected to the first combiner 42 to realize the connection between the different transmitting paths 43 and the main receiving path 44 and the antenna 10.
  • the main set reception signal is transmitted to the first antenna switch 41 through the first switch 20, and the first antenna switch 41 is connected to the corresponding first combiner 42 to turn on the corresponding The main set receiving path 44, the main set receiving signal is transmitted to the radio frequency transceiver 10 through the corresponding first combiner 42 and the main set receiving path 44 in turn, so that the radio frequency transceiver 10 receives the main set receiving signal;
  • the first antenna switch 41 is connected to the corresponding first combiner 42 to turn on the corresponding transmission path 43.
  • the first radio frequency transmission signal is sequentially passed through the corresponding radio frequency transceiver 10
  • the transmission path 43, the first combiner 42, the first antenna switch 41 and the first switch 20 are transmitted to the antenna 30 so that the antenna 30 converts and transmits the first radio frequency transmission signal, wherein the first radio frequency transmission signal is transmitted to the first
  • the switch 20 is switched, a part of the first radio frequency transmission signal, that is, the second radio frequency transmission signal, will be transmitted back to the radio frequency transceiver 10 via the power detection path 50, so that the radio frequency transceiver 10 can complete the power monitoring of the first radio frequency transmission signal.
  • connection of the transmitting and receiving ports (ie TRX1...TRXn) of the first antenna switch 41 is only for illustrative purposes, and only part of the first antenna switch 41 is shown in FIG. 4
  • the connection example of the transceiver port, the connection status of the other transceiver ports can be set by analogy according to the transceiver port TRX1. As shown in Fig.
  • the transmission path 43 and the different signal ports respectively connected to the first combiner 42 are then connected to the transceiver port TRX1 of the first antenna switch 41 via the common port of the first combiner 42, and the first antenna
  • the antenna port ANT of the switch 41 is connected to one of the radio frequency ports of the first switch 20; in actual use, according to the actual radio frequency requirements, multiple groups of the transmitting path 43 and the main receiving path 44 for different frequency band requirements can be set, and respectively connected with
  • the multiple first combiners 42 connected to the corresponding transmitting path 43 and the main set receiving path 44 are respectively connected to different transceiver ports of the first antenna switch 41 through the multiple first combiners 42.
  • the transmission path 43 may include: a power amplifier 431 and a transmission filter 432, in the direction from the radio frequency transceiver 10 to the first switch 20 ,
  • the transmission path 43 is connected in series with the power amplifier 431 and the transmission filter 432 in sequence
  • the main set receiving path 44 may include: the main set receiving filter 44, the main set receiving filter 44 is connected in series to the first antenna switch 41 and the radio frequency transceiver Between 10.
  • the power amplifier 431 is used to amplify the first radio frequency transmission signal sent by the radio frequency transceiver 10, so as to increase the effective communication distance between the terminal equipment and the base station;
  • the transmission filter 432 as a frequency selection device, is used to The transmitted signal is filtered to meet EMC requirements;
  • the main set receiving filter 44 is used to perform filtering processing on the received main set receiving signal to improve the anti-interference performance of the radio frequency device.
  • the diversity receiving path 60 may include: a diversity receiving filter 61 and a second antenna switch 62, from the radio frequency transceiver 10 to the first switch In the direction of 20, a diversity receiving filter 61 and a second antenna switch 62 are sequentially connected in series in the diversity receiving path 60.
  • the diversity receiving filter 61 is used to filter the diversity receiving signal to improve the anti-interference performance of the radio frequency device; the second antenna switch 62 is used to realize the connection between the antenna 10 and different diversity receiving paths 60. It can be understood that, in FIGS.
  • the illustrated connection of the diversity receiving ports (ie DRX1, DRX2...DRXn) of the second antenna switch 62 is only for illustrative purposes, and only in FIGS. 3 and 4
  • the connection example of part of the diversity receiving port of the second antenna switch 62 is shown, and the connection status of the remaining diversity receiving ports can be set by analogy according to the diversity receiving port DRX1.
  • multiple groups of diversity receiving paths 60 for different frequency band requirements can be set according to actual radio frequency requirements, and each diversity receiving path 60 corresponds to a different diversity receiving port connected to the second antenna switch 62.
  • the diversity receiving port DRX1, diversity receiving filter 61, and radio frequency transceiver 10 of the second antenna switch 62 are sequentially connected to form a diversity receiving path 60.
  • the antenna port ANT of the second antenna switch 62 is connected to the first
  • the ninth radio frequency port of the switch 20 is connected.
  • the radio frequency device may further include: a modem 70 connected to the radio frequency transceiver 10.
  • the modem 70 is used to demodulate the radio frequency reception signal (including the main set reception signal and the diversity reception signal) received by the radio frequency transceiver 10, and to send the modulated radio frequency transmission signal carrying useful information to the radio frequency transceiver 10.
  • the modem 70 is also used to control the radio frequency transceiver 10 and the radio frequency front end of the radio frequency device (for example, the first switch 20, the first antenna switch 41, the second antenna switch 52 and other switches and power amplifiers, etc.) work.
  • the radio frequency device connects the first switch with the power detection path through the power detection path between the radio frequency transceiver and the first switch when the first radio frequency transmission signal passes through the first switch by the radio frequency transceiver
  • the second radio frequency signal obtained by coupling the radio frequency port to the radio frequency transceiver is transmitted to the radio frequency transceiver, thereby realizing the power monitoring of the first radio frequency transmission signal transmitted by the transmitting and receiving channel, and the directional coupler in the related technology can be eliminated, that is, the related technology
  • the insertion loss of the directional coupler in the transmitting and receiving path can reduce the power consumption of the device in the transmitting and receiving path under the same transmission power, and at the same time, it will not affect the receiving sensitivity of the main receiver and can improve the radio frequency receiving performance.
  • an embodiment of the present disclosure provides a terminal device including the above-mentioned radio frequency device.
  • the terminal device may be a mobile phone or a tablet computer.
  • the terminal device is not limited to mobile phones and tablet computers, and can be electronic devices with radio frequency functions such as laptop computers or personal digital assistants.
  • the terminal equipment with the above radio frequency device because the radio frequency device cancels the insertion loss of the directional coupler in the transmitting and receiving path in the related art, so that the devices in the transmitting and receiving path can be reduced under the same transmission power.
  • Power consumption while not affecting the receiving sensitivity of the main receiver, can improve the RF receiving performance, so it is beneficial to reduce the power consumption of the terminal equipment, improve and enhance the battery life of the terminal equipment, and ensure the reliability of the RF receiving performance of the terminal equipment Sex and stability.
  • the terms "including”, “including” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, The article or device includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a" does not exclude the existence of other identical elements in the process, method, article or device that includes the element.
  • the terms “installed”, “connected”, “connected”, “fixed”, “set” and other terms should be understood in a broad sense.
  • it may be a fixed connection or It can be detachably connected or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed may be a fixed connection or It can be detachably connected or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • 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 the relationship between these entities or operations. There is any such actual relationship or sequence.

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

Abstract

L'invention concerne un appareil radiofréquence et un dispositif terminal. L'appareil radiofréquence comprend : un émetteur-récepteur radiofréquence ; un premier commutateur ; une antenne, l'antenne étant connectée au premier commutateur ; un dispositif de connexion de canal, le dispositif de connexion de canal étant connecté au premier commutateur ; un canal d'émission et de réception situé entre l'émetteur-récepteur radiofréquence et le premier commutateur ; et un canal de réception de diversité et un canal de détection de puissance, situé entre l'émetteur-récepteur radiofréquence et le dispositif de connexion de canal, un premier signal de transmission radiofréquence envoyé par l'émetteur-récepteur radiofréquence étant transmis, par l'intermédiaire du canal d'émission et de réception, à l'antenne au moyen du premier commutateur ; et des seconds signaux de transmission radiofréquence dans le premier signal de transmission radiofréquence sont retransmis à l'émetteur-récepteur radiofréquence par l'intermédiaire du dispositif de connexion de canal et du canal de détection de puissance en séquence.
PCT/CN2020/081728 2019-04-30 2020-03-27 Appareil radiofréquence et dispositif terminal WO2020220886A1 (fr)

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