WO2021248344A1 - Circuit radiofréquence et dispositif de communication sans fil - Google Patents

Circuit radiofréquence et dispositif de communication sans fil Download PDF

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Publication number
WO2021248344A1
WO2021248344A1 PCT/CN2020/095279 CN2020095279W WO2021248344A1 WO 2021248344 A1 WO2021248344 A1 WO 2021248344A1 CN 2020095279 W CN2020095279 W CN 2020095279W WO 2021248344 A1 WO2021248344 A1 WO 2021248344A1
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WO
WIPO (PCT)
Prior art keywords
radio frequency
switch
antennas
amplifier
channel switch
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PCT/CN2020/095279
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English (en)
Chinese (zh)
Inventor
顾建忠
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芯朴科技(上海)有限公司
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Publication of WO2021248344A1 publication Critical patent/WO2021248344A1/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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode

Definitions

  • the present invention relates to the field of wireless communication technology, and in particular to a 1T2R radio frequency circuit and wireless communication equipment.
  • 5G mobile technology has matured and been applied in practice. Different from previous generations of mobile communication technologies, 5G has added several new frequency bands, including n77 3300-4200MHz, n78 3300-3800MHz and n79 4400-5000MHz. Different from previous generations of mobile communication technology, in order to achieve a high download rate in 5G, a single mobile terminal always needs to achieve four simultaneous receptions, thereby increasing the download rate. Four-way reception requires the design of four independent antennas in the mobile terminal device. Because the performance of the four antennas is inconsistent, the four antennas require the terminal to transmit signals as sounding reference signals (Sounding Reference Signal) to upload to the base station, and channel quality detection can be performed And estimation, beam management, etc.
  • Sounding Reference Signal Sounding Reference Signal
  • the purpose of the present invention is to provide a 1T2R radio frequency circuit, which simplifies the design complexity of the radio frequency front end in communication equipment, improves the integration level, and reduces the cost at the same time. .
  • An embodiment of the present application provides a 1T2R radio frequency circuit, including: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, a first low noise amplifier, a second low noise amplifier, a first Channel switch, second channel switch and third channel switch, among which,
  • the output terminal of the first radio frequency amplifier and the input terminal of the first low noise amplifier are respectively connected to the first channel switch through the first transceiver switch, and the output terminal of the second radio frequency amplifier is connected to the second channel switch respectively.
  • the input ends of the low noise amplifier are respectively connected to the first channel switch through the second transceiver switch;
  • the first channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas;
  • the output terminal of the first low noise amplifier is connected to multiple receivers through the second channel switch, and the output terminal of the second low noise amplifier is connected to multiple receivers through the third channel switch;
  • the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas.
  • the first low-noise amplifier and the second low-noise amplifier are used to amplify and output to realize two-way reception.
  • a filter is connected between the first transceiver switch and the first channel switch, and a filter is connected between the second transceiver switch and the first channel switch.
  • the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the first channel switch and transmitted through the SRS switch To the multiple SRS antennas, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the first channel switch output to the multiple antennas and transmit to the multiple antennas through the SRS switch.
  • SRS antennas are amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the first channel switch and transmitted through the SRS switch To the multiple SRS antennas, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the first channel switch output to the multiple antennas and transmit to the multiple antennas through the SRS switch.
  • n77 or n79 radio frequency reception signals are respectively received by any two antennas among the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the first channel switch and
  • the first transceiver switch is outputted to the first low-noise amplifier for amplification and output to the corresponding receiver through the second channel switch, or output through the first channel switch and the second transceiver switch in turn Amplify in the second low noise amplifier and output to the corresponding receiver through the third channel switch.
  • the first low noise amplifier is connected to an n77 receiver and an n79 receiver
  • the second low noise amplifier is connected to an n77 receiver and an n79 receiver.
  • the multiple antennas include first to fourth antennas, and the multiple SRS antennas include first and second SRS antennas.
  • Another embodiment of the present application also provides a 1T2R radio frequency circuit, including: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, first to fourth low noise amplifiers, and a channel switch ,in,
  • the output terminal of the first radio frequency amplifier, the input terminal of the first low noise amplifier, and the input terminal of the third low noise amplifier are respectively connected to the channel switch through the first transceiver switch, and the second radio frequency
  • the output terminal of the amplifier, the input terminal of the second low noise amplifier and the input terminal of the fourth low noise amplifier are respectively connected to the channel switch through the second transceiver switch;
  • the channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas;
  • the output ends of the first to fourth low noise amplifiers are each connected to a receiver
  • the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas. Simultaneously through the first and third low-noise amplifiers or through the second and fourth low-noise amplifiers for amplifying and outputting to achieve two-way reception.
  • the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the channel switch, and is transmitted to all antennas through the SRS switch.
  • the multiple SRS antennas, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the channel switch are sequentially output to the multiple antennas and transmitted to the multiple SRS antennas through the SRS switch.
  • the n77 or n79 radio frequency reception signal is respectively received by any two antennas among the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the channel switch and the The first transceiver switch outputs to the first and third low-noise amplifiers for amplification and output to the corresponding receiver, or sequentially passes through the channel switch and the second transceiver switch to output to the second and fourth Amplify in the low noise amplifier and output to the corresponding receiver.
  • Another embodiment of the present application also provides a wireless communication device that uses the 1T2R radio frequency circuit described above.
  • the integration of the 1T2R radio frequency circuit of the present application is improved, and functional modules such as the control line and the amplifier inside the circuit are shared, which simplifies the design complexity of the radio frequency front end in the communication device and reduces the cost at the same time.
  • Fig. 1 is a schematic diagram of a 1T2R radio frequency circuit in an embodiment of the present invention.
  • Figure 2 is a schematic diagram of a 1T2R radio frequency circuit in another embodiment of the present invention.
  • the first embodiment of the present application discloses a 1T2R radio frequency circuit
  • FIG. 1 shows a schematic diagram of the radio frequency circuit.
  • the circuit includes: a first radio frequency amplifier 101, a second radio frequency amplifier 104, a first transceiver switch 102, a second transceiver switch 105, a first low noise amplifier 109, a second low noise amplifier 110, a first channel switch 111, and a second The channel switch 112 and the third channel switch 107, in which,
  • the output terminal of the first radio frequency amplifier 101 and the input terminal of the first low noise amplifier 109 are respectively connected to the first channel switch 107 through the first transceiver switch 102, and the output terminal of the second radio frequency amplifier 104 And the input terminal 110 of the second low noise amplifier are respectively connected to the first channel switch 107 through the second transceiver switch 105;
  • the first channel switch 107 is connected to multiple antennas and has an SRS switch 108 connected to multiple SRS antennas;
  • the output terminal of the first low noise amplifier 109 is connected to multiple receivers through the second channel switch 111, and the output terminal of the second low noise amplifier 110 is connected to multiple receivers through the third channel switch 112;
  • the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier 101 or the second radio frequency amplifier 104 to realize one-way transmission, and the radio frequency reception signal passes through any two of the plurality of antennas.
  • a filter 103 is connected between the first transceiver switch 102 and the first channel switch 107, and a filter is connected between the second transceiver switch 105 and the first channel switch 107 106.
  • the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier 101 and then sequentially output to the multiple antennas through the first transceiver switch 102 and the first channel switch 107 and then passes through the
  • the SRS switch transmits to the multiple SRS antennas, or is amplified by the second radio frequency amplifier 104 and then sequentially output to the multiple antennas by the second transceiver switch 105 and the first channel switch 107 and then passes through the SRS The switch transmits to the multiple SRS antennas.
  • the n77 or n79 radio frequency reception signal is respectively received by any two antennas among the plurality of antennas, and one of the two antennas sequentially passes the received radio frequency signal through the first channel switch 107 And the output of the first transceiver switch 102 to the first low-noise amplifier 109 for amplification and output to the corresponding receiver through the second channel switch 111, or through the first channel switch 107 and the The second transceiver switch 105 outputs to the second low-noise amplifier 110 for amplification and outputs to the corresponding receiver through the third channel switch 112.
  • the first low noise amplifier 109 is connected to an n77 receiver RX_n77_A and an n79 receiver RX_n79_A
  • the second low noise amplifier 110 is connected to an n77 receiver RX_n77_B and an n79 receiver RX_n79_B.
  • the multiple antennas include first to fourth antennas ANT1, ANT2, ANT3, and ANT4, and the multiple SRS antennas include a first SRS antenna AUX1 and a second SRS antenna AUX2.
  • the first SRS antenna AUX1 and the second SRS antenna AUX2 are respectively connected to the first SRS receiver AUX1_Rx and the second SRS receiver AUX2_Rx through the SRS switch 108.
  • the n77 radio frequency transmission signal RFin_n77 is amplified by the radio frequency power amplifier (PA) 101, passes through the first transceiver switch 102, passes through the n77/n79 filter 103, and transmits the signal to the antennas ANT1 and ANT2 through the first channel switch 107 , ANT3 and ANT4, through the SRS switch 108 at the same time, can transmit the transmission power to the SRS antennas AUX1 and AUX2.
  • PA radio frequency power amplifier
  • n77 radio frequency receiving signal can choose any two antennas among the antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, forming the A signal and the B signal respectively, where the A signal enters the first channel from the antenna
  • the switch 107 passes through the n77/n79 filter 103, passes through the first transceiver switch 102, to the first low noise amplifier (LNA) 109 and then enters the second channel switch 111 and outputs to the port of the receiver Rx_n77_A; the signal of channel B enters from the antenna
  • the first channel switch 107 passes through the n77/n79 filter 106, passes through the second transceiver switch 105, and is amplified by the second low noise amplifier (LNA) 110, and then enters the third channel switch 112 to output to the port of Rx_n77_B.
  • LNA low noise amplifier
  • n79 radio frequency transmission signal RFin_n79 is amplified by the second radio frequency power amplifier (PA) 104, passes through the second transceiver switch 105, passes through the n77/n79 filter 106, and transmits the power to the antenna ANT1 through the first channel switch 107 , ANT2, ANT3 and ANT4, through the SRS switch 108 at the same time, can transmit the transmission signal to the SRS antenna AUX1 and AUX2.
  • the realization path of n79 2R: n79 RF receiving signal can choose any two antennas among antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, respectively forming the A signal and the B signal.
  • the A signal enters the first channel from the antenna
  • the switch 107 passes through the n77/n79 filter 103, passes through the first transceiver switch 102, to the first low noise amplifier (LNA) 109, and then enters the second channel switch 111 and outputs to the port of Rx_n79_A; the signal of channel B enters the first port from the antenna
  • the channel switch 107 passes through the n77/n79 filter 106, passes through the second transceiver switch 105, and is amplified by the second low noise amplifier (LNA) 110, and then enters the third channel switch 112 to the port of the receiver Rx_n79_B.
  • LNA low noise amplifier
  • the SRS function is integrated in the switch 107 at the same time, and the transmission power of n77 and n79 can be transmitted to the AUX1 and AUX2 ports of the SRS antenna through the SRS switch to realize the SRS function of the additional two antennas.
  • the SRS switch has an additional DPDT function, which enables the AUX1 and AUX2 ports to receive signals to be output to the SRS receivers AUX1_Rx and AUX2_Rx through the SRS switch.
  • the second embodiment of the present application discloses a 1T2R radio frequency circuit
  • FIG. 2 shows a schematic diagram of the radio frequency circuit.
  • the circuit includes: a first radio frequency amplifier 201, a second radio frequency amplifier 204, a first transceiver switch 202, a second transceiver switch 205, first to fourth low-noise amplifiers 209-212 and a channel switch 207, among which,
  • the output terminal of the first radio frequency amplifier 201, the input terminal of the first low noise amplifier 209, and the input terminal of the third low noise amplifier 211 are respectively connected to the channel switch 207 through the first transceiver switch 202,
  • the output terminal of the second radio frequency amplifier 204, the input terminal of the second low noise amplifier 210, and the input terminal of the fourth low noise amplifier 212 are respectively connected to the channel switch 207 through the second transceiver switch 205;
  • the channel switch 207 is connected to multiple antennas and has an SRS switch 208 connected to multiple SRS antennas;
  • the output ends of the first to fourth low noise amplifiers 209-212 are each connected to a receiver;
  • the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier 201 or the second radio frequency amplifier 204 to realize one-way transmission, and the radio frequency reception signal passes through any two of the plurality of antennas.
  • a filter 203 is connected between the first transceiver switch 202 and the channel switch 207, and a filter 206 is connected between the second transceiver switch 205 and the channel switch 207.
  • the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier 201 and then sequentially output to the multiple antennas through the first transceiver switch 202 and the channel switch 207 and then passes through the SRS switch. Transmit to the multiple SRS antennas, or after being amplified by the second radio frequency amplifier 204, the second transceiver switch 205 and the channel switch 207 are output to the multiple antennas and transmitted to all the antennas through the SRS switch. Said multiple SRS antennas.
  • the n77 or n79 radio frequency reception signal is received by any two antennas of the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the channel switch 207 and all the antennas in sequence.
  • the first transceiver switch 202 outputs to the first and third low-noise amplifiers 209, 211 for amplification and output to the corresponding receiver, or through the channel switch 207 and the second transceiver switch 205 to output to
  • the second and fourth low noise amplifiers 210 and 212 are amplified and output to the corresponding receivers.
  • the radio frequency circuit of this embodiment is basically the same as the radio frequency circuit of the first embodiment.
  • the first and second low-noise amplifiers in the first embodiment can amplify the n77 and n79 radio frequency signals, and then divide the amplified signal into two parts
  • the first and third low-noise amplifiers in the second embodiment can realize the amplification of n77 radio frequency signals
  • the second and fourth low-noise amplifiers can realize the amplification of n79 radio frequency signals, which are directly output after amplification without additional channel switches.
  • the low-noise amplifier in the first embodiment realizes broadband amplification
  • the ground noise amplifier in the second embodiment realizes narrow-band amplification.
  • n77 radio frequency transmission signal RFin_n77 is amplified by the first radio frequency power amplifier (PA) 201, passes through the first transceiver switch 202, passes through the n77/n79 filter 203, and transmits the signal to the antennas ANT1 and ANT2 through the channel switch 207 , ANT3 and ANT4, through the SRS switch 208 at the same time, can transmit the transmission signal to the SRS antennas AUX1 and AUX2.
  • the realization path of n77 2R: n77 RF receiving signal can choose any two antennas among the antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, and form the A signal and the B signal respectively.
  • the A signal enters the channel switch 207 from the antenna , Through the n77/n79 filter 203, through the first transceiver switch 202, amplified by the first low noise amplifier (LNA) A 209 of the n77, and output to the port of the receiver Rx_n77_A; the signal of channel B enters the channel switch 207 from the antenna and passes
  • the n77/n79 filter 206 passes through the second transceiver switch 205, is amplified by the third low noise amplifier (LNA) B 211 of the n77, and then output to the port of the receiver Rx_n77_B, thereby realizing the function of the n77 2R in the unified module.
  • LNA low noise amplifier
  • n79 radio frequency transmission signal RFin_n79 is amplified by the second radio frequency power amplifier (PA) 204, passes through the second transceiver switch 205, passes through the n77/n79 filter 206, and transmits the signal to the antennas ANT1 and ANT2 through the channel switch 207 , ANT3 and ANT4, through the SRS switch 208 at the same time, can transmit the transmission signal to the SRS antennas AUX1 and AUX2.
  • the realization path of n79 2R: n79 RF receiving signal can choose any two antennas among antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, and form the A signal and the B signal respectively.
  • the A signal enters the channel switch 207 from the antenna , Through the n77/n79 filter 203, through the first transceiver switch 202, amplified by the second low noise amplifier (LNA) A 210 of the n79, and output to the port of the receiver Rx_n79_A; the signal of channel B enters the channel switch 207 from the antenna and passes
  • the n77/n79 filter 206 passes through the second transceiver switch 205, is amplified by the fourth low-noise amplifier (LNA) B 212 of the n79, and then output to the port of the receiver Rx_n79_B; thus, the function of the n79 2R in the unified module is realized.
  • LNA low noise amplifier
  • the switch 207 in this embodiment integrates the SRS function at the same time, and the transmission power of n77 and n79 can be transmitted to the AUX1 and AUX2 ports of the SRS antenna through the SRS switch to realize the SRS function of the additional two antennas.
  • the SRS switch has an additional DPDT function, which enables the AUX1 and AUX2 ports to receive signals to be output to the SRS receivers AUX1_Rx and AUX2_Rx through the SRS switch.
  • the wireless communication devices involved in the embodiments of the present application may include electronic devices or network devices.
  • the electronic devices may be various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices linked to wireless modems with wireless communication functions. And various forms of user equipment, mobile terminals, terminal equipment, and so on.
  • an act is performed based on a certain element, it means that the act is performed at least based on that element. It includes two situations: performing the act only based on the element, and performing the act based on the element and Other elements perform the behavior. Multiple, multiple, multiple, etc. expressions include 2, 2, 2 and more than 2, 2 or more, and 2 or more.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un circuit radiofréquence 1T2R et un dispositif de communication sans fil. Le circuit radiofréquence comprend des premier et second amplificateurs radiofréquence, des premier et second commutateurs d'émission-réception, des premier et second amplificateurs à faible bruit, et des premier à troisième commutateurs de canal, le premier amplificateur radiofréquence et le premier amplificateur à faible bruit étant respectivement connectés au premier commutateur de canal au moyen du premier commutateur d'émission-réception, et le second amplificateur radiofréquence et le second amplificateur à faible bruit étant respectivement connectés au premier commutateur de canal au moyen du second commutateur d'émission-réception ; une extrémité de sortie du premier amplificateur à faible bruit est connectée à une pluralité de récepteurs au moyen du deuxième commutateur de canal, et une extrémité de sortie du second amplificateur à faible bruit est connectée à la pluralité de récepteurs au moyen du troisième commutateur de canal ; et un signal de transmission radiofréquence est respectivement transmis à l'une d'une pluralité d'antennes au moyen du premier amplificateur radiofréquence ou du second amplificateur radiofréquence, de manière à réaliser une transmission unidirectionnelle, et un signal de réception radiofréquence est reçu au moyen de deux antennes quelconques parmi la pluralité d'antennes et passe simultanément à travers le premier amplificateur à faible bruit et le second amplificateur à faible bruit pour être amplifié et émis, de manière à réaliser une réception à deux voies.
PCT/CN2020/095279 2020-06-09 2020-06-10 Circuit radiofréquence et dispositif de communication sans fil WO2021248344A1 (fr)

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CN202010516042.6 2020-06-09
CN202010516042.6A CN111682885B (zh) 2020-06-09 2020-06-09 1t2r射频电路、无线通信设备

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CN114640372A (zh) * 2020-12-16 2022-06-17 Oppo广东移动通信有限公司 射频PA Mid器件、射频收发系统和通信设备
CN113258944B (zh) * 2021-05-12 2023-05-16 展讯通信（上海）有限公司 Srs发射电路、方法和装置
CN113285734B (zh) * 2021-05-13 2024-05-03 世强先进(深圳)科技股份有限公司 一种双收双发无线射频电路及无线基站

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