WO2021248518A1 - Circuit de réception radiofréquence 5g et dispositif de communication sans fil - Google Patents

Circuit de réception radiofréquence 5g et dispositif de communication sans fil Download PDF

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Publication number
WO2021248518A1
WO2021248518A1 PCT/CN2020/096551 CN2020096551W WO2021248518A1 WO 2021248518 A1 WO2021248518 A1 WO 2021248518A1 CN 2020096551 W CN2020096551 W CN 2020096551W WO 2021248518 A1 WO2021248518 A1 WO 2021248518A1
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WO
WIPO (PCT)
Prior art keywords
noise amplifier
radio frequency
selection switch
channel selection
low
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Application number
PCT/CN2020/096551
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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 date
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Publication of WO2021248518A1 publication Critical patent/WO2021248518A1/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
    • H04B1/06—Receivers
    • H04B1/16—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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Definitions

  • the present invention relates to the field of wireless communication technology, and in particular to a 5G radio frequency receiving 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 the previous generations of mobile communication technologies, in order to achieve high download rates, 5G always needs to achieve multiple simultaneous receptions on a single mobile terminal, thereby increasing the download rate. In addition, the signal transmitted by the terminal needs to become a sounding reference signal (Sounding Reference Signal) to be uploaded to the base station, which can perform channel quality detection and estimation, beam management, and so on.
  • Sounding Reference Signal Sounding Reference Signal
  • the purpose of the present invention is to provide a 5G radio frequency receiving 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 5G radio frequency receiving circuit, including: a first low-noise amplifier, a second low-noise amplifier, and a channel selection switch, wherein the input terminal of the first low-noise amplifier and the second low-noise amplifier The input terminals of the low noise amplifier are respectively connected to the channel selection switch, the output terminal of the first low noise amplifier and the output terminal of the second low noise amplifier are respectively connected to a receiver, and the channel selection switch is also connected to the SRS signal and Antenna, wherein the first low noise amplifier and the second low noise amplifier are respectively used to amplify different radio frequency signals received by the antenna.
  • a filter is connected between the channel selection switch and the antenna.
  • it further includes: a third low-noise amplifier and a fourth low-noise amplifier, the input end of the third low-noise amplifier and the input end of the fourth low-noise amplifier are respectively connected to the channel selection switch, The output terminal of the third low-noise amplifier and the output terminal of the fourth low-noise amplifier are respectively connected to a receiver, the channel selection switch is connected to two antennas, wherein the first low-noise amplifier and the second low-noise amplifier The low noise amplifiers are respectively used to amplify different radio frequency signals in the same signal received by one antenna, and the third low noise amplifier and the fourth low noise amplifier are respectively used to amplify the signal of another signal received by another antenna. Different radio frequency signals.
  • the first low noise amplifier and the second low noise amplifier are connected to one antenna through a filter, and the third low noise amplifier and the fourth low noise amplifier are connected to another antenna through a filter.
  • Another embodiment of the present application also provides a 5G radio frequency receiving circuit, including: a first channel selection switch, a first low-noise amplifier, and a second channel selection switch connected in sequence, the input of the first low-noise amplifier The terminal is connected to the first channel selection switch, the output terminal is connected to the second channel selection switch, the second channel selection switch is connected to multiple receivers, and the first channel selection switch is also connected to the SRS signal and the antenna, wherein, The first low noise amplifier can amplify different radio frequency signals and select output through the second channel selection switch.
  • a filter is connected between the first channel selection switch and the antenna.
  • it further includes: a second low noise amplifier and a third channel selection switch, the first channel selection switch is connected to two antennas, and the input end of the second low noise amplifier is connected to the first channel selection switch.
  • Switch the output terminal is connected to the third channel selection switch, the third channel selection switch is connected to a plurality of receivers, wherein the first low-noise amplifier can amplify different radio frequency signals of one radio frequency signal and pass the second The channel selection switch selects output, and the second low-noise amplifier can amplify different radio frequency signals of another radio frequency signal and select the output through the third channel selection switch.
  • the first low noise amplifier is connected to one antenna through a filter
  • the second low noise amplifier is connected to another antenna through a filter
  • Another embodiment of the present application also provides a wireless communication device that uses the 5G radio frequency receiving circuit described above.
  • the integration of the 5G radio frequency receiving 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 5G radio frequency receiving circuit in the first embodiment of the present invention.
  • Fig. 2 is a schematic diagram of a 5G radio frequency receiving circuit in the second embodiment of the present invention.
  • Fig. 3 is a schematic diagram of a 5G radio frequency receiving circuit in the third embodiment of the present invention.
  • Fig. 4 is a schematic diagram of a 5G radio frequency receiving circuit in the fourth embodiment of the present invention.
  • FIG. 1 shows a schematic diagram of the 5G radio frequency receiving circuit.
  • the circuit includes: a first low noise amplifier 103, a second low noise amplifier 104, and a channel selection switch 102 , Wherein the input terminal of the first low noise amplifier 103 and the input terminal of the second low noise amplifier 104 are respectively connected to the channel selection switch 102, and the output terminal of the first low noise amplifier 103 and the second low noise amplifier 103 The output ends of the two low noise amplifiers 104 are respectively connected to the receiver, the channel selection switch 102 is also connected to the SRS signal SRS Tx and the antenna ANT, where the first low noise amplifier 103 and the second low noise amplifier 104 are respectively used To amplify different radio frequency signals received by the antenna ANT.
  • a filter (n77 n79 Filter) 101 is connected between the channel selection switch 102 and the antenna ANT.
  • the first low noise amplifier 103 is, for example, an n77 LNA
  • the second low noise amplifier 104 is, for example, an n79 LNA.
  • the n77 radio frequency input signal enters the n77 and n79 filters 101 from the antenna ANT, passes through the switch 102, the n77 radio frequency signal is amplified by the n77 low noise amplifier (LNA) 103 and then output to the receiver Rx n77, the n79 radio frequency signal passes through the n79
  • the LNA 104 is amplified and output to the receiver Rx n79.
  • the SRS transmission signal SRS Tx is input to the switch 102, and is output to the antenna ANT after passing through the filter 101.
  • the second embodiment of the present application discloses a 5G radio frequency receiving circuit.
  • Figure 2 shows a schematic diagram of the 5G radio frequency receiving circuit.
  • the circuit includes a first channel selection switch 202, a first low noise amplifier 203, and a Two-channel selection switch 204, the input end of the first low noise amplifier 203 is connected to the first channel selection switch 202, the output end is connected to the second channel selection switch 204, the second channel selection switch 204 is connected to multiple In the receiver, the first channel selection switch 202 is further connected to the SRS signal SRS Tx and the antenna ANT, wherein the first low noise amplifier 202 can amplify different radio frequency signals and select and output through the second channel selection switch 204.
  • a filter (n77 n79 Filter) 201 is connected between the first channel selection switch 202 and the antenna ANT.
  • the first low noise amplifier 103 is, for example, n77 n79 LNA,
  • the n77 or n79 radio frequency input signal enters the n77 and n79 filter 201 from the antenna ANT, and then passes through the switch 202.
  • the n77 or n79 radio frequency signal is amplified by the n77 n79 LNA 203 and then output.
  • the n77 or n79 radio frequency signal They are respectively output to the receiver Rx n77 or receiver Rx n79 at their respective ports.
  • the SRS transmission signal is input to the switch 202, and is output to the antenna ANT after passing through the filter 201.
  • FIG. 3 shows a schematic diagram of the 5G radio frequency receiving circuit.
  • the circuit includes: a channel selection switch 303, a first low noise amplifier 304, and a second low noise amplifier 305 ,
  • the input terminal of the fourth low noise amplifier 307 are respectively connected to the channel selection switch 303, the output terminal of the first low noise amplifier 304, the output terminal of the second low noise amplifier 305, the third low noise amplifier 305
  • the output terminal of the noise amplifier 306 and the output terminal of the fourth low noise amplifier 307 are respectively connected to a receiver
  • the channel selection switch 303 is connected to the two antennas ANT1 and ANT2 of the SRS signal SRS Tx, wherein the first low noise amplifier 304 and the second low noise amplifier 305 are respectively used to ampli
  • the first low noise amplifier 304 and the second low noise amplifier 305 are connected to an antenna ANT1 through a filter (n77 n79 Filter A) 301, and the third low noise amplifier 306 and the second low noise amplifier 306 are connected to an antenna ANT1.
  • the four low-noise amplifier 307 is connected to another antenna ANT2 through a filter (n77 n79 Filter B) 302.
  • the first low noise amplifier 304 is, for example, n77 LNA A
  • the second low noise amplifier 305 is, for example, n79 LNA A
  • the third low noise amplifier 306 is, for example, n77 LNA B
  • the fourth low noise amplifier 307 is, for example, n79. LNA B.
  • the n77 or n79 A radio frequency input signal enters the n77 and n79 filter A 301 from the antenna ANT1, passes through the switch 303, n77 A radio frequency signal is amplified by the n77 LNA A 304 and then output to the receiver Rx n77 A, n79 A radio frequency The signal is amplified by the n79 LNA A 305 and output to the receiver Rx n79 A.
  • the n77 or n79 B RF input signal enters the n77 and n79 filter B 302 from the antenna ANT2, passes through the switch 303, the n77 B RF signal is amplified by the n77 LNA B 306, and then output to the receiver Rx n77 B, the n79 B RF signal passes through the n79 LNA B 307 is amplified and output to the receiver Rx n79 B.
  • the SRS transmission signal is input to the switch 303, and the radio frequency signal A filter 301 can be selected to be output to ANT1, or the radio frequency signal B filter 302 can be selected to be output to ANT2.
  • FIG. 4 shows a schematic diagram of the 5G radio frequency receiving circuit.
  • the circuit includes: a first channel selection switch 403, a first low noise amplifier 404, and a second channel selection A switch 406, a second low noise amplifier 405 and a third channel selection switch 407, the input terminal of the first low noise amplifier 404 is connected to the first channel selection switch 403, and the output terminal is connected to the second channel selection switch 406,
  • the second channel selection switch 406 is connected to multiple receivers, the input terminal of the second low noise amplifier 405 is connected to the first channel selection switch 403, and the output terminal is connected to the third channel selection switch 407.
  • the three-channel selection switch 407 is connected to multiple receivers.
  • the first channel selection switch 403 is also connected to the SRS signal SRS Tx and two antennas ANT1 and ANT2.
  • the first low-noise amplifier 404 can amplify the difference of a radio frequency signal.
  • the radio frequency signal is selected for output through the second channel selection switch 406, and the second low-noise amplifier 405 can amplify a different radio frequency signal of another radio frequency signal and select and output through the third channel selection switch 407.
  • the first low noise amplifier 404 is connected to one antenna ANT1 through a filter (n77 n79 Filter A) 401, and the second low noise amplifier 405 is connected to another antenna ANT1 through a filter (n77 n79 Filter B) 402.
  • Antenna ANT2 is connected to one antenna ANT1 through a filter (n77 n79 Filter A) 401, and the second low noise amplifier 405 is connected to another antenna ANT1 through a filter (n77 n79 Filter B) 402.
  • Antenna ANT2 Antenna ANT2.
  • the first low noise amplifier 404 is, for example, n77 n79 LNA A
  • the second low noise amplifier 405 is, for example, n79 n79 LNA BB.
  • the n77 or n79 A radio frequency input signal enters the n77 and n79 filter A 401 from the antenna ANT1, passes through the switch 403, is amplified by the n77 n79 LNA A 404, and after the switch 406, the n77 A or n79 A radio frequency signal is respectively Output to the receiver Rx n77 A or receiver Rx n79 A at their respective ports.
  • the n77 or n79 B radio frequency input signal enters the n77 and n79 filter B 402 from the ANT2 antenna port, passes through the switch 403, is amplified by the n77 n79 LNA B 405, and after the switch 407, the n77 B or n79 B radio frequency signals are output at their respective ports To receiver Rx n77 B or receiver Rx n79 B.
  • the SRS transmission signal is input to the switch 403, and the radio frequency signal A filter 401 can be selected to be output to ANT1, or the radio frequency signal B filter 402 can be selected to be output to ANT2.
  • 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)

Abstract

La présente demande concerne un circuit de réception radiofréquence 5G et un dispositif de communication sans fil. Le circuit de réception radiofréquence 5G comprend un premier amplificateur à faible bruit, un second amplificateur à faible bruit et un commutateur de sélection de canal ; une borne d'entrée du premier amplificateur à faible bruit et une borne d'entrée du second amplificateur à faible bruit sont respectivement connectées au commutateur de sélection de canal, une borne de sortie du premier amplificateur à faible bruit et une borne de sortie du second amplificateur à faible bruit sont respectivement connectées à un récepteur, le commutateur de sélection de canal est également connecté à des signaux SRS et à une antenne, et le premier amplificateur à faible bruit et le second amplificateur à faible bruit sont respectivement utilisés pour amplifier différents signaux radiofréquences reçus par l'antenne.
PCT/CN2020/096551 2020-06-12 2020-06-17 Circuit de réception radiofréquence 5g et dispositif de communication sans fil WO2021248518A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010536521.4 2020-06-12
CN202010536521.4A CN111697985A (zh) 2020-06-12 2020-06-12 5g射频接收电路、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
CN113676210B (zh) * 2021-08-12 2022-07-15 Oppo广东移动通信有限公司 放大器模组、射频系统及通信设备

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CN108900234A (zh) * 2018-07-23 2018-11-27 Oppo广东移动通信有限公司 接收模组、天线切换控制方法及相关产品
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CN204046592U (zh) * 2014-06-19 2014-12-24 成都九洲迪飞科技有限责任公司 高容量宽带数字对讲机
CN207166788U (zh) * 2017-08-31 2018-03-30 深圳磊诺科技有限公司 一种lte全频段的扫频系统和lte全频段射频卡
CN109347512A (zh) * 2018-11-30 2019-02-15 北京羽扇智信息科技有限公司 信号传输装置、电子设备以及信号传输装置的控制方法

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Publication number Priority date Publication date Assignee Title
CN108923806A (zh) * 2018-06-25 2018-11-30 东南大学 一种兼容lte mtc和gsm/gprs频段的电力物联网射频前端电路
WO2020001224A1 (fr) * 2018-06-29 2020-01-02 Oppo广东移动通信有限公司 Commutateur multiplexeur, et produit associé
CN108900234A (zh) * 2018-07-23 2018-11-27 Oppo广东移动通信有限公司 接收模组、天线切换控制方法及相关产品
CN111245379A (zh) * 2020-03-05 2020-06-05 芯朴科技(上海)有限公司 平衡或差分放大器和功率放大方法、射频电路

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