WO2020063612A1 - 控制tdd系统的接收灵敏度的移动终端及时分双工系统 - Google Patents

控制tdd系统的接收灵敏度的移动终端及时分双工系统 Download PDF

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Publication number
WO2020063612A1
WO2020063612A1 PCT/CN2019/107663 CN2019107663W WO2020063612A1 WO 2020063612 A1 WO2020063612 A1 WO 2020063612A1 CN 2019107663 W CN2019107663 W CN 2019107663W WO 2020063612 A1 WO2020063612 A1 WO 2020063612A1
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Prior art keywords
switch
downlink
radio frequency
mobile terminal
noise
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PCT/CN2019/107663
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English (en)
French (fr)
Inventor
黎敏辉
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惠州Tcl移动通信有限公司
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Publication of WO2020063612A1 publication Critical patent/WO2020063612A1/zh

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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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • 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 communications technologies, and in particular, to a mobile terminal timely division duplexing system that controls the receiving sensitivity of a TDD system.
  • Mobile terminals such as smartphones access the operator's communication network and need to receive signals from the baseband.
  • TDD Time Division Duplex, time division duplex
  • the transmission loss causes the baseband signal received by the antenna to be weakened before reaching the transceiving device, which results in that the receiving sensitivity of the mobile terminal cannot be improved and the performance is poor.
  • reception sensitivity especially in remote areas covered by signals, communication of mobile terminals such as mobile phones is frequently dropped, which affects the user experience.
  • the technical problem to be solved by the present invention is to provide a mobile terminal that controls the receiving sensitivity of the TDD system in real time to duplex the system in response to the above-mentioned shortcomings of the prior art, by increasing the receiving path between the power amplifier device and the transceiver device.
  • Class 1 downlink low-noise amplification device to reduce the noise figure of the entire time division duplex system to improve the sensitivity of the TDD system and improve the user experience.
  • a mobile terminal for controlling the receiving sensitivity of a TDD system includes a mobile terminal body.
  • the mobile terminal body is provided with a PCB board.
  • the PCB board is provided with a transceiver device, a downlink low-noise amplifier device, a power amplifier device, and a filter.
  • the power amplifying device includes a second radio frequency bidirectional switch (301).
  • the second radio frequency bidirectional switch (301) includes a common terminal (RFC), a first switch (RF1), and a second switch (RF2).
  • the common terminal (RFC) is connected to the filter, the first switch (RF1) is connected to the input of the downlink low-noise amplifier, and the output of the downlink low-noise amplifier is connected to the reception of the transceiver.
  • Terminal (RX) connection, the second switch (RF2) is connected to the transmitting terminal (TX) of the transceiver;
  • the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to the first switch (RF1) to form a downlink receiving path;
  • the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to the second switch (RF2) to form an uplink transmission path.
  • an antenna and a first radio frequency antenna switch connected to the antenna are further provided on the PCB, and the first radio frequency antenna switch is connected in series with the filter. connection.
  • the downlink signal received by the antenna passes through the selection of the first radio frequency antenna switch, the filter filtering and After the optimization process, it is input to the power amplifier device for amplification processing, and then output to the downlink low-noise amplifier device for noise reduction optimization processing. After compensating for a certain transmission loss of the downlink signal, it is output to the transceiver device, thereby enhancing Sensitivity of the baseband to receiving the downlink signal.
  • the baseband when an uplink receiving path is turned on, the baseband sends an uplink signal to the transceiver, which is output through an output terminal (TX) of the transceiver, and passes through the transceiver in order.
  • TX output terminal
  • the power amplification device performs amplification processing, filtering and optimization processing of the filter, the first radio frequency antenna switch is selected and transmitted through the antenna.
  • a mobile terminal for controlling the receiving sensitivity of a TDD system is also provided.
  • the mobile terminal includes a mobile terminal body.
  • the mobile terminal body is provided with a PCB board.
  • the PCB board is provided with a transmitting and receiving device, a downlink low noise amplifier device, and a power amplifier device.
  • the power amplifying device includes a second radio frequency bidirectional switch (301), and the second radio frequency bidirectional switch (301) includes a common terminal (RFC), a first switch (RF1), and a second switch (RF2),
  • the common terminal (RFC) is connected to the filter, the first switch (RF1) is connected to an input of the downlink low-noise amplifier, and an output of the downlink low-noise amplifier is connected to the transceiver.
  • the receiving end (RX) is connected, the second switch (RF2) is connected to the transmitting end (TX) of the transceiving device, and the baseband signal controls the second radio frequency bidirectional switch (301) according to the time slot status of the time division duplex system )
  • the public terminal (RFC) is connected to the first switch (RF1) or the second switch (RF2) to form different communication paths.
  • an antenna and a first radio frequency antenna switch connected to the antenna are further provided on the PCB, and the first radio frequency antenna switch is connected in series with the filter. connection.
  • the mobile terminal for controlling the receiving sensitivity of a TDD system, wherein the communication path includes a downlink receiving path; when the downlink receiving path is turned on, a downlink signal received by the antenna passes through the first radio frequency antenna switch in order.
  • the filter is filtered and optimized and input to the power amplification device for amplification processing, and then output to the downlink low-noise amplification device for noise reduction optimization processing to compensate for a certain transmission loss of the downlink signal.
  • Output to the transceiver thereby enhancing the sensitivity of the base station to receive the downlink signal.
  • the mobile terminal for controlling the receiving sensitivity of the TDD system, wherein the communication path includes an uplink receiving path; when the uplink receiving path is on, the base station sends an uplink signal to the transceiver device, and passes the output terminal of the transceiver device
  • the (TX) output is transmitted through the antenna after being subjected to amplification processing by the power amplification device, filtering and optimization processing of the filter, and selection of the first radio frequency antenna switch.
  • the downlink low-noise amplifier is a level 1 low-noise amplifier, and the noise figure is 0.8 dB.
  • the noise coefficient of the entire downlink receiving path is reduced by the noise reduction processing of the downlink low-noise amplification device, so as to compensate the downlink signal along the PCB routing line.
  • the increased signal transmission loss is 2dB.
  • the power amplification device is a radio frequency gain amplifier or a radio frequency power amplifier.
  • a time division duplex system which includes a mobile terminal and a base station that control the reception sensitivity of the TDD system.
  • the base station and the mobile terminal communicate through a network connection, and the uplink and downlink signals of the base station are based on the time division duplex system. Time slot status control to conduct different communication paths for transmission;
  • the mobile terminal includes a mobile terminal body, and a PCB board is provided in the mobile terminal body.
  • a receiving and transmitting device, a downlink low-noise amplification device, a power amplification device, and a filter are provided on the PCB.
  • the power amplification device includes A second radio frequency bidirectional switch (301), the second radio frequency bidirectional switch (301) including a common terminal (RFC), a first switch (RF1), and a second switch (RF2), the common terminal (RFC) and the The filter is connected, the first switch (RF1) is connected to the input terminal of the downlink low-noise amplifier, and the output terminal of the downlink low-noise amplifier is connected to the receiver (RX) of the transceiver.
  • the second switch (RF2) is connected to the transmitting end (TX) of the transceiving device, and the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to connect according to the time slot status of the time division duplex system.
  • the first switch (RF1) or the second switch (RF2) form different communication paths.
  • an antenna and a first radio frequency antenna switch connected to the antenna are further provided on the PCB, and the first radio frequency antenna switch is connected in series with the filter. connection.
  • the mobile terminal for controlling the receiving sensitivity of the TDD system, wherein, when the time division duplex system is in a receiving time slot state, the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch and connect to the The first switch (RF1) is described to form a downlink receiving path.
  • the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch and connect to the The first switch (RF1) to form a downlink receiving path.
  • the mobile terminal for controlling the receiving sensitivity of the TDD system, wherein, when the time division duplex system is in a transmitting time slot state, the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch and connect to the The second switch (RF2) is described to form an uplink transmission path.
  • the baseband signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch and connect to the The second switch (RF2) is described to form an uplink transmission path.
  • the downlink signal received by the antenna passes through the selection of the first radio frequency antenna switch, the filter filtering and After the optimization process, it is input to the power amplifier device for amplification processing, and then output to the downlink low-noise amplifier device for noise reduction optimization processing. After compensating for a certain transmission loss of the downlink signal, it is output to the transceiver device, thereby enhancing Sensitivity of the base station to receiving the downlink signal.
  • the base station when an uplink receiving path is conducted, the base station sends an uplink signal to the transceiver device, and outputs through the output terminal (TX) of the transceiver device to pass through the transceiver device in turn.
  • TX output terminal
  • the power amplification device performs amplification processing, filtering and optimization processing of the filter, the first radio frequency antenna switch is selected and transmitted through the antenna.
  • the downlink low-noise amplifier is a level 1 low-noise amplifier, and the noise figure is 0.8 dB.
  • the noise coefficient of the entire downlink receiving path is reduced by the noise reduction processing of the downlink low-noise amplification device, so as to compensate the downlink signal along the PCB routing line.
  • the increased signal transmission loss is 2dB.
  • the power amplification device is a radio frequency gain amplifier or a radio frequency power amplifier.
  • the present invention provides a mobile terminal for controlling the receiving sensitivity of the TDD system, which has the beneficial effects of the time division duplexing system:
  • the added low-noise amplification device has the characteristics of low cost, excellent performance, high reliability, and noise reduction and amplification.
  • the solution designed by the present invention has a simple structure and an optimal link loss.
  • the shortest design path is realized in the design of reducing the noise figure, the design cost is low, and it is easier to popularize.
  • FIG. 1 is a structural diagram of a mobile terminal that controls a receiving sensitivity of a TDD system according to the present invention.
  • FIG. 2 is a functional principle block diagram of the time division duplex system of the present invention.
  • FIG. 1 is a structural diagram of a mobile terminal for controlling a receiving sensitivity of a TDD system provided by the present invention.
  • the mobile terminal 10 that controls the receiving sensitivity of the TDD system includes a mobile terminal body.
  • the mobile terminal body is provided with a PCB board, and the PCB board is provided with a transceiving device 1 and downlink low noise.
  • the amplifying device 2, the power amplifying device 3, and the filter 4, the transceiving device 1, the downlink low noise amplifying device 2, the power amplifying device 3, and the filter 4 are connected in series in this order.
  • the power amplifier device 3 has a built-in second radio frequency bidirectional switch (301), and the second radio frequency bidirectional switch (301) can enable the power amplifier device 3 to independently complete receiving and transmitting time slot control of the TDD system. jobs. That is, the mobile terminal provided by the present invention adopts a time division duplex working mode, and distinguishes an uplink or a downlink by a time slot state.
  • the second radio frequency bidirectional switch (301) includes a common terminal (RFC), a first switch (RF1), and a second switch (RF2), and the common terminal (RFC) is connected to the filter 4, so that The first switch (RF1) is connected to the input terminal of the downlink low-noise amplifier device 2, the output terminal of the downlink low-noise amplifier device 2 is connected to the receive terminal (RX) of the transceiver device 1, and the second The switch (RF2) is connected to a transmitting end (TX) of the transceiver. It can be seen from FIG.
  • a downlink low-noise amplifier 2 that only a downlink low-noise amplifier 2 is added to a receiving path (ie, a downlink) between the transceiver 1 and the power amplifier 3, and the downlink low-noise amplifier 2 It is connected in series with the transceiver device 1 and the power amplifier device 3.
  • the power amplification device 3 is a radio frequency gain amplifier or a radio frequency power amplifier.
  • the downlink low-noise amplifier 2 is a level 1 low-noise amplifier, and its noise figure is 0.8 dB.
  • the noise coefficient (ie, insertion loss) of the entire time division duplex system is determined by the loss of the front-end receiving path of the power amplification device 3, and the insertion loss of the power amplification device 3 and the The loss of the receiving path at the end is, for example, the insertion loss of a filter.
  • the insertion loss of the filter refers to the ratio of the power before and after the circuit is inserted.
  • the filter can be regarded as a passive network, and its insertion loss is its noise figure.
  • the reason why the downlink low-noise amplifier 2 uses only a low-noise amplifier of level 1 is as follows:
  • noise figure (NF) cascade formula is:
  • NF 0 NF 1 + (NF 2 -1) / G 1 + (NF 3- 1) / G 1 G 2 +.... (NF n-1 ) / G1 *... G n-1 (1)
  • the noise figure NF the signal-to-noise ratio at the input / output of the low-noise amplifier of each stage, where NF 0 represents the total noise of the TDD system receiving path, n represents the nth stage noise, and G represents the power amplifier's Gain, the level gain of each stage is represented by Gn.
  • the first-level NF plays a key role in the entire system.
  • the downlink low-noise amplifier 2 works with multiple amplifier tubes, its cascading noise depends on the first-stage noise and Gain, because the effect after the third stage is already very small, the total noise is the noise of the first stage plus the noise of the second stage minus one divided by the sum of the gain of the first stage.
  • the downlink low-noise amplification device added on the path is the first stage, and because the downlink low-noise amplification device has a small NF (noise figure), it can effectively reduce the NF (noise figure) of the entire system, and Long PCB traces result in increased loss (transmission loss), which effectively improves the mobile terminal sensitivity level on the TDD receive path, with a value of 2dB.
  • the PCB further includes an antenna 6 and a first radio frequency antenna switch 5 connected to the antenna 6, and the first radio frequency antenna switch 5 is connected in series with the filter 4. .
  • the mobile terminal also has a built-in baseband 7, and the baseband 7 performs signal transmission with the transceiving device 1.
  • the baseband signal of the baseband 7 is used to distinguish between uplink and downlink. When it is uplink, it sends It is an uplink signal, and when it is a downlink, a downlink signal is received.
  • the baseband signal controls the common terminal (RFC) of the second radio frequency bidirectional switch (301) to switch to the first switch (RF1) or the second switch (RF2) according to the time slot status of the time division duplex system to form different Communication path.
  • RRC common terminal
  • the baseband 7 signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to the first switch (RF1) to form Downlink receiving path. That is, as shown in FIG. 1, when the downlink receiving path is turned on, the downlink signal received by the antenna 6 is sequentially input to the first radio frequency antenna switch 5, and the filter 4 is filtered and optimized.
  • the power amplifying device 3 performs amplification processing, and then outputs it to the downlink low-noise amplification device 2 for noise reduction optimization processing, compensates for a certain transmission loss of the downlink signal, and outputs it to the transceiver device 1 to enhance the baseband 7 Sensitivity of receiving the downlink signal.
  • the noise coefficient of the entire downlink receiving path is reduced to compensate for the increased signal transmission loss of the downlink signal caused by the excessively long wiring along the PCB.
  • the baseband 7 signal controls the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to the second switch (RF2) to form an uplink transmission path . That is, when the uplink receiving path is turned on, the baseband sends an uplink signal to the transceiving device 1, which is output through the output (TX) of the transceiving device 1, and is sequentially amplified by the power amplification device 3 and the filter 4 After being filtered and optimized, the first radio frequency antenna switch 5 is selected and transmitted through the antenna 6.
  • RRC common end
  • the present invention utilizes the TDD time-division duplex working mode.
  • the invention uses its noise reduction and amplification effects to effectively reduce the NF (noise figure) of the receiving system and compensate.
  • the transmission loss caused by the long wiring on the PCB board improves the sensitivity level of the mobile terminal and further improves the user's experience in mobile terminals such as mobile phones in remote areas.
  • the present invention also provides a time division duplex system.
  • the system includes the mobile terminal 10 for controlling the receiving sensitivity of the TDD system and the base station 20 connected to the mobile terminal 10 through an antenna.
  • the base station 20 communicates with the mobile terminal 10 through a network, which includes a Bluetooth connection, a wireless network connection, or other connection methods capable of performing network connection communication.
  • the base station 20 signals are controlled to be transmitted through different communication paths according to the time slot status (that is, the reception time slot status or the transmission time slot status) of the time division duplex system, as described in the working principle of the mobile terminal 10 described above.
  • the present invention discloses a mobile terminal real-time duplexing system for controlling the receiving sensitivity of a TDD system.
  • the mobile terminal method includes: including a mobile terminal body, and the mobile terminal body is provided with a PCB board.
  • the PCB board is provided with a transceiver device, a downlink low-noise amplifier device, a power amplifier device, and a filter.
  • the power amplifier device includes a second radio frequency bidirectional switch (301), and the second radio frequency bidirectional switch (301) includes a common radio frequency switch.
  • Terminal (RFC), first switch (RF1), and second switch (RF2) the common terminal (RFC) is connected to the filter, and the first switch (RF1) is connected to the downstream low-noise amplifier The input end is connected, the output end of the downlink low-noise amplifier is connected to the receiving end (RX) of the transceiver, the second switch (RF2) is connected to the transmitting end (TX) of the transceiver, and the baseband signal Controlling the common end (RFC) of the second radio frequency bidirectional switch (301) to switch to the first switch (RF1) or the second switch (RF2) according to the time slot status of the time division duplex system to form Same communication path.
  • a level 1 downlink low-noise amplifier is added to the receiving path between the power amplifying device and the transmitting and receiving device, so as to compensate the transmission loss caused by the downlink signal in the PCB routing in the receiving path, thereby reducing
  • the noise coefficient of the receiving path of the entire time division duplex system improves the sensitivity of the TDD system and the user experience.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

本发明公开了控制TDD系统的接收灵敏度的移动终端及时分双工系统，其移动终端的功率放大装置内置第二射频双向开关，第二射频双向开关分别与滤波器、下行低噪声放大装置、收发装置连接，下行低噪声放大装置连接收发装置，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关切换以形成不同的通信通路。

Description

控制TDD系统的接收灵敏度的移动终端及时分双工系统
本申请要求于2018年9月27日提交中国专利局、申请号为201811129276.4、发明名称为“控制TDD系统的接收灵敏度的移动终端及时分双工系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体涉及一种控制TDD系统的接收灵敏度的移动终端及时分双工系统。
 背景技术
智能手机等移动终端接入运营商通信网络，需要接收来自基带信号，在传统的TDD（Time Division Duplex，时分双工模式）系统工作模式下，由于接收通路的器件存在插入损耗及PCB走线的传输损耗（loss），使得天线接收到的基带信号在到达收发装置之前被削弱了，从而导致移动终端接收灵敏度无法提高，性能较差。这样，在接收灵敏度较差的情况下，尤其是在信号覆盖的偏远地区，经常导致手机等移动终端通信频繁掉线，影响用户体验。
因此，现有技术还有待于改进和发展。
 技术问题
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种控制TDD系统的接收灵敏度的移动终端及时分双工系统，通过在功率放大装置与收发装置之间的接收通路上增加1级下行低噪声放大装置，来降低整个时分双工系统的噪声系数，以提高TDD系统的灵敏度，提高用户体验。
 技术解决方案
本发明解决技术问题所采用的技术方案如下：
一种控制TDD系统的接收灵敏度的移动终端，包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接；
当时分双工系统处于接收时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第一开关（RF1）以形成下行接收通路；
当时分双工系统处于发射时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第二开关（RF2）以形成上行发射通路。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基带接收所述下行信号的灵敏度。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当上行接收通路导通时，基带发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
还提供一种控制TDD系统的接收灵敏度的移动终端，包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述通信通路包括下行接收通路；当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基站接收所述下行信号的灵敏度。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述通信通路包括上行接收通路；当上行接收通路导通时，基站发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述下行低噪声放大装置为1级低噪声放大器，噪声系数为0.8dB。
所述的控制TDD系统的接收灵敏度的移动终端，其中，通过所述下行低噪声放大装置的降噪处理，降低整个所述下行接收通路的噪声系数，以补偿所述下行信号沿PCB走线所增加的信号传输耗损的值为2dB。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述功率放大装置为射频增益放大器或射频功率放大器。
还提供一种时分双工系统，包括控制TDD系统的接收灵敏度的移动终端和基站，所述基站与所述移动终端通过网络连接进行通信，并将基站的上下行信号根据所述时分双工系统的时隙状态控制导通不同的通信通路进行传输；
所述移动终端包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当时分双工系统处于接收时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第一开关（RF1）以形成下行接收通路。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当时分双工系统处于发射时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第二开关（RF2）以形成上行发射通路。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基站接收所述下行信号的灵敏度。
所述的控制TDD系统的接收灵敏度的移动终端，其中，当上行接收通路导通时，基站发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述下行低噪声放大装置为1级低噪声放大器，噪声系数为0.8dB。
所述的控制TDD系统的接收灵敏度的移动终端，其中，通过所述下行低噪声放大装置的降噪处理，降低整个所述下行接收通路的噪声系数，以补偿所述下行信号沿PCB走线所增加的信号传输耗损的值为2dB。
所述的控制TDD系统的接收灵敏度的移动终端，其中，所述功率放大装置为射频增益放大器或射频功率放大器。
 有益效果
相较于现有技术，本发明提供的一种控制TDD系统的接收灵敏度的移动终端及时分双工系统具有的有益效果：
1.通过在所述功率放大装置与所述收发装置之间的接收通路上增加1级下行低噪声放大装置，以补偿接收通路中下行信号在PCB走线所引起的传输耗损，以此来降低整个时分双工系统接收通路的噪声系数，从而提升TDD系统的灵敏度，提高用户体验。
2.增加的所述下行低噪声放大装置具有成本低、性能优、可靠性高及降噪与放大作用的特点。
3.本发明设计的方案，结构简单，链路差损最优，在降低噪声系数的设计上实现最短设计路径，设计成本低，更易推广。
 附图说明
图1是本发明控制TDD系统的接收灵敏度的移动终端的结构图。
图2是本发明的时分双工系统的功能原理框图。
 本发明的实施方式
为使本发明的目的、技术方案及优点更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例一
请参见图1，图1是本发明提供的控制TDD系统的接收灵敏度的移动终端的结构图。如图1所示，所述控制TDD系统的接收灵敏度的移动终端10，包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置1、下行低噪声放大装置2、功率放大装置3以及滤波器4，所述收发装置1、下行低噪声放大装置2、功率放大装置3以及滤波器4依次串联连接。
如图1所示，所述功率放大装置3内置有第二射频双向开关（301），第二射频双向开关（301）可使得所述功率放大装置3独立完成TDD系统的接收与发射时隙控制工作。也就是说，本发明所提供的移动终端是采用时分双工的工作模式，通过时隙状态区分上行链路还是下行链路。
具体地，所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器4连接，所述第一开关（RF1）与所述下行低噪声放大装置2的输入端连接，所述下行低噪声放大装置2的输出端与所述收发装置1的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接。由图1看出，仅仅在所述收发装置1与所述功率放大装置3之间的接收通路（即下行链路）上增加了一个下行低噪声放大装置2，所述下行低噪声放大装置2与所述收发装置1、所述功率放大装置3串联连接。
优选地，所述功率放大装置3为射频增益放大器或射频功率放大器。
优选地，所述下行低噪声放大装置2为1级低噪声放大器，其噪声系数为0.8dB。
根据噪声系统级联公式以及极限灵敏度计算公式，可知整个时分双工系统噪声系数（即插入损耗）由功率放大装置3的前端接收通路的耗损来决定，并忽略功率放大装置3的插入耗损以及后端接收通路的耗损，如滤波器的插入损耗，所述滤波器的插入损耗指的是插入电路的前后功率之比。在本发明实施例中，所述滤波器可以看作是无源网络，则其插入损耗是其噪声系数。
本发明实施例中，所述下行低噪声放大装置2仅仅采用1级的低噪声放大器的原因如下：
噪声系数 (Noise figure，NF)级联公式为：
NF 0=NF 1 + (NF 2-1)/G 1 + (NF 3-1)/G 1G 2 + …. (NF n-1)/G1*…G n-1   （1）
即噪声系数NF =每一级低噪声放大装置的输入端信噪比/输出端信噪比，其中，NF 0表示TDD系统接收通路的总噪声，n表示第n级噪声，G表示功率放大器的增益，则每一级的电平增益用Gn表示。
由（1）可知，第一级的NF（噪声系数）对整个系统起关键性作用，下行低噪声放大装置2在使用多个放大管工作时,其级联噪声取决于第一级的噪声及增益，因为第三级之后的影响已经很小，总的噪声为第一级的噪声加上第二级的噪声减一除以第一级的增益之和，因此，在收发装置1的RX端的通路上增加的下行低噪声放大装置为第一级，且由于该下行低噪声放大装置具有较小的NF（噪声系数），因此，可有效降低整个系统的NF（噪声系数），补偿后端较长的PCB走线所导致增加的loss(传输损耗)，从而有效提升TDD接收通路上的移动终端灵敏度水平，其值为2dB。
进一步地，如图1所示，所述PCB板上还设置有天线6及与所述天线6连接的第一射频天线开关5，所述第一射频天线开关5与所述滤波器4串联连接。
所述移动终端还内置有基带7，所述基带7与所述收发装置1进行信号传输，所述基带7的基带信号用于区分上行链路和下行链路，当为上行链路时，发送的是上行信号，当为下行链路时，接收的是下行信号。
工作原理：基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。
具体地，1）当时分双工系统处于接收时隙状态时，基带7信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第一开关（RF1）以形成下行接收通路。即如图1所示，当下行接收通路导通时，所述天线6接收到的下行信号，依次经过所述第一射频天线开关5的选择、所述滤波器4滤波与优化处理后输入至所述功率放大装置3进行放大处理，再输出至所述下行低噪声放大装置2以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置1，从而增强基带7接收所述下行信号的灵敏度。通过所述下行低噪声放大装置2的降噪处理，降低整个所述下行接收通路的噪声系数，以补偿所述下行信号沿PCB板上的走线过长所增加的信号传输耗损
2）当时分双工系统处于发射时隙状态时，基带7信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第二开关（RF2）以形成上行发射通路。即当上行接收通路导通时，基带发送上行信号至所述收发装置1，通过所述收发装置1的输出端（TX）输出，依次经过所述功率放大装置3放大处理、所述滤波器4的滤波与优化处理后经所述第一射频天线开关5的选择，通过所述天线6发射出去。
因此，本发明利用TDD时分双工的工作模式，在接收时隙里通过增加1级下行低噪声放大装置，利用其降噪及放大的作用，有效的降低接收系统的NF(噪声系数)，补偿了PCB板上的走线过长所引起的传输损耗，提高移动终端的灵敏度水平，更提升用户在偏远地区的移动终端如手机应用的体验。
实施例二
本发明还提供一种时分双工系统，如图2所示，所述系统包括上述所述的控制TDD系统的接收灵敏度的移动终端10以及与所述移动终端10通过天线连接的基站20，所述基站20与所述移动终端10通过网络方式进行通信，所述网络方式包括蓝牙连接、无线网络连接或其他能够进行网络连接通信的连接方式。通过将基站20信号根据所述时分双工系统的时隙状态（即接收时隙状态或发射时隙状态）控制导通不同的通信通路进行传输，具体如上述移动终端10的工作原理所述。
综上所述，本发明公开了一种控制TDD系统的接收灵敏度的移动终端及时分双工系统，所述移动终端法包括：包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。本发明通过在所述功率放大装置与所述收发装置之间的接收通路上增加1级下行低噪声放大装置，以补偿接收通路中下行信号在PCB走线所引起的传输耗损，以此来降低整个时分双工系统接收通路的噪声系数，从而提升TDD系统的灵敏度，提高用户体验。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (20)

  1. 一种控制TDD系统的接收灵敏度的移动终端，其特征在于，包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接；
    当时分双工系统处于接收时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第一开关（RF1）以形成下行接收通路；
    当时分双工系统处于发射时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第二开关（RF2）以形成上行发射通路。
  2. 根据权利要求1所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
  3. 根据权利要求2所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基带接收所述下行信号的灵敏度。
  4. 根据权利要求2所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，当上行接收通路导通时，基带发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
  5. 一种控制TDD系统的接收灵敏度的移动终端，其特征在于，包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。
  6. 根据权利要求5所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
  7. 根据权利要求6所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述通信通路包括下行接收通路；当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基带接收所述下行信号的灵敏度。
  8. 根据权利要求6所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述通信通路包括上行接收通路；当上行接收通路导通时，基带发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
  9. 根据权利要求7所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述下行低噪声放大装置为1级低噪声放大器，噪声系数为0.8dB。
  10. 根据权利要求9所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，通过所述下行低噪声放大装置的降噪处理，降低整个所述下行接收通路的噪声系数，以补偿所述下行信号沿PCB走线所增加的信号传输耗损的值为2dB。
  11. 根据权利要求5所述的控制TDD系统的接收灵敏度的移动终端，其特征在于，所述功率放大装置为射频增益放大器或射频功率放大器。
  12. 一种时分双工系统，包括控制TDD系统的接收灵敏度的移动终端和基站，所述基站与所述移动终端通过网络连接进行通信，并将基站信号根据所述时分双工系统的时隙状态控制导通不同的通信通路进行传输；
    所述移动终端包括移动终端本体，所述移动终端本体中设置有PCB板，在所述PCB板上设置有收发装置、下行低噪声放大装置、功率放大装置以及滤波器，所述功率放大装置包括第二射频双向开关（301），所述第二射频双向开关（301）包括公共端（RFC）、第一开关（RF1）以及第二开关（RF2），所述公共端（RFC）与所述滤波器连接，所述第一开关（RF1）与所述下行低噪声放大装置的输入端连接，所述下行低噪声放大装置的输出端与所述收发装置的接收端（RX）连接，所述第二开关（RF2）与所述收发装置的发射端（TX）连接，基带信号根据时分双工系统的时隙状态控制所述第二射频双向开关（301）的公共端（RFC）切换连接至第一开关（RF1）或第二开关（RF2）以形成不同的通信通路。
  13. 根据权利要求12所述的时分双工系统，其特征在于，所述PCB板上还设置有天线及与所述天线连接的第一射频天线开关，所述第一射频天线开关与所述滤波器串联连接。
  14. 根据权利要求13所述的时分双工系统，其特征在于，当时分双工系统处于接收时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第一开关（RF1）以形成下行接收通路。
  15. 根据权利要求13所述的时分双工系统，其特征在于，当时分双工系统处于发射时隙状态时，基带信号控制所述第二射频双向开关（301）的公共端（RFC）切换连接至所述第二开关（RF2）以形成上行发射通路。
  16. 根据权利要求14所述的时分双工系统，其特征在于，当下行接收通路导通时，所述天线接收到的下行信号，依次经过所述第一射频天线开关的选择、所述滤波器滤波与优化处理后输入至所述功率放大装置进行放大处理，再输出至所述下行低噪声放大装置以进行降噪优化处理，补偿所述下行信号一定的传输耗损后输出至所述收发装置，从而增强基带接收所述下行信号的灵敏度。
  17. 根据权利要求15所述的时分双工系统，其特征在于，当上行接收通路导通时，基带发送上行信号至所述收发装置，通过所述收发装置的输出端（TX）输出，依次经过所述功率放大装置放大处理、所述滤波器的滤波与优化处理后经所述第一射频天线开关的选择，通过所述天线发射出去。
  18. 根据权利要求16所述的时分双工系统，其特征在于，所述下行低噪声放大装置为1级低噪声放大器，噪声系数为0.8dB。
  19. 根据权利要求18所述的时分双工系统，其特征在于，通过所述下行低噪声放大装置的降噪处理，降低整个所述下行接收通路的噪声系数，以补偿所述下行信号沿PCB走线所增加的信号传输耗损的值为2dB。
  20. 根据权利要求12所述的时分双工系统，其特征在于，所述功率放大装置为射频增益放大器或射频功率放大器。
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CN109150229B (zh) * 2018-09-27 2021-07-13 惠州Tcl移动通信有限公司 控制tdd系统的接收灵敏度的移动终端及时分双工系统
CN110971266A (zh) * 2019-12-04 2020-04-07 惠州Tcl移动通信有限公司 Wifi灵敏度增强装置及电子设备
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200944592Y (zh) * 2006-08-28 2007-09-05 大唐移动通信设备有限公司 一种时分双工射频前端
US20090181635A1 (en) * 2007-12-17 2009-07-16 Atsushi Yamada High-frequency circuit having filtering function and reception device
CN101557247A (zh) * 2008-04-09 2009-10-14 北京邦讯技术有限公司 一种td-scdma直放站及信号上下行处理方法
CN204013415U (zh) * 2014-06-09 2014-12-10 中国移动通信集团公司 一种时分双工系统放大器及直放站
CN108233981A (zh) * 2016-12-15 2018-06-29 海能达通信股份有限公司 射频拉远装置及时分双工系统
CN109150229A (zh) * 2018-09-27 2019-01-04 惠州Tcl移动通信有限公司 控制tdd系统的接收灵敏度的移动终端及时分双工系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002171194A (ja) * 2000-11-30 2002-06-14 Matsushita Electric Ind Co Ltd 無線装置、並びにそれを備える携帯情報端末および無線基地局、並びにそれらを含む無線通信システム
CN1832372A (zh) * 2005-03-10 2006-09-13 胡军 一种新型手持式电话系统的双向放大器
CN101262674A (zh) * 2008-04-25 2008-09-10 中兴通讯股份有限公司 一种改善双模终端射频干扰的电路与方法
CN206620115U (zh) * 2017-02-08 2017-11-07 惠州Tcl移动通信有限公司 移动终端及其用于提高tdd频段灵敏度的控制电路

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200944592Y (zh) * 2006-08-28 2007-09-05 大唐移动通信设备有限公司 一种时分双工射频前端
US20090181635A1 (en) * 2007-12-17 2009-07-16 Atsushi Yamada High-frequency circuit having filtering function and reception device
CN101557247A (zh) * 2008-04-09 2009-10-14 北京邦讯技术有限公司 一种td-scdma直放站及信号上下行处理方法
CN204013415U (zh) * 2014-06-09 2014-12-10 中国移动通信集团公司 一种时分双工系统放大器及直放站
CN108233981A (zh) * 2016-12-15 2018-06-29 海能达通信股份有限公司 射频拉远装置及时分双工系统
CN109150229A (zh) * 2018-09-27 2019-01-04 惠州Tcl移动通信有限公司 控制tdd系统的接收灵敏度的移动终端及时分双工系统

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