WO2013189404A1 - 一种多工器 - Google Patents

一种多工器 Download PDF

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Publication number
WO2013189404A1
WO2013189404A1 PCT/CN2013/081987 CN2013081987W WO2013189404A1 WO 2013189404 A1 WO2013189404 A1 WO 2013189404A1 CN 2013081987 W CN2013081987 W CN 2013081987W WO 2013189404 A1 WO2013189404 A1 WO 2013189404A1
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WO
WIPO (PCT)
Prior art keywords
module
filter
switch
mode signal
transmit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/081987
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English (en)
French (fr)
Inventor
周虹
田其
沈楠
杨华
赵丽娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to US14/646,289 priority Critical patent/US9559730B2/en
Priority to ES13807022T priority patent/ES2710521T3/es
Priority to EP13807022.2A priority patent/EP2911305B1/en
Publication of WO2013189404A1 publication Critical patent/WO2013189404A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04B1/0057—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 diplexing or multiplexing filters 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15557—Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/04—Mode multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/08—Time-division multiplex systems

Definitions

  • the present invention relates to the field of communications, and in particular, to a multiplexer. Background technique
  • the FDD (Frequency Division Duplexing) mode and the TDD (Time Division Duplexing) mode have become the mainstream two communication modes, because many operators have both FDD and TDD.
  • Licensing there is an urgent need to deploy both systems, and high requirements are placed on the simplicity, uniformity, and size and weight of the deployed RF units.
  • dual-mode systems One is to implement a common antenna feed scheme through external devices.
  • Figure 1, 01, and 04 are the receive filters of the FDD band
  • 02 and 05 are the FDD bands.
  • the transmit filter, 03, 06 is the filter of the TDD band.
  • This solution connects two independent FDD RF units and TDD RF units through an external multiplexer to connect the two systems together.
  • This solution is difficult to install and cost.
  • the other is the channel independent mode, as shown in Figure 2, the receive filter 01' of the FDD band, the transmit filter 02' of the FDD band, and the filter 03' of the TDD band are combined.
  • This scheme is only in the TDD circuit. Physically spliced together with the FDD circuit (such as a circuit board), there is no shared transmit and receive channels, only two systems are placed in the same housing, the external embodiment is a radio frequency unit, but in essence it is still two Set of independent systems.
  • Embodiments of the present invention provide a multiplexer that solves the problem of how a multimode signal shares a transmission channel, a reception channel, and a transceiver antenna.
  • a multiplexer is disposed between a transceiver antenna and a receiving channel and a transmitting channel; the transceiver antenna, the receiving channel, and the transmitting channel are shared by at least two mode signals; the multiplexer includes:
  • Each of the transmit filter modules is configured to select a corresponding mode signal from the signals to be transmitted by the transmit channel, and transmit the signal to the transceiver antenna;
  • Each receive filtering module is configured to select a corresponding mode signal from the signals received by the transceiver antenna and transmit the signal to the amplification module connected thereto;
  • Each amplifying module is configured to amplify the corresponding mode signal selected by the receiving filtering module connected thereto and transmit the corresponding mode signal to the combining module;
  • the combining module is configured to receive the signal amplified by each amplifying module, and perform a combining process to transmit the combined signal to the receiving channel.
  • the at least two mode signals comprise two mode signals, which are a frequency division duplex mode signal and a time division duplex mode signal, respectively.
  • the multiplexer further includes a time division duplexing device configured to connect or isolate the transmit filter module and the receive filter module corresponding to the time division duplex mode signal.
  • the transmit filter module and the receive filter module corresponding to the time division duplex mode signal are the same two filter modules, and the first end of the time division duplex device is connected to one of the two filter modules.
  • the second end is connected to another one of the two filtering modules, and the third end is connected to the sending channel; or the third end is connected to the amplifying module corresponding to the time division duplex mode signal.
  • the time division duplexing device includes a first RF switch, a second RF switch, and a dual RF switch; the first end of the dual RF switch is connected to one of the two filtering modules; The other end of the RF switch is connected to the first end of one of the first and second RF switches, or neither the first RF switch nor the second RF switch is connected;
  • the second end of the first radio frequency switch is connected to the other filtering module, and the second end of the second radio frequency module is connected to the sending channel;
  • first end of the first RF switch is connected to the other filtering module, and the second end of the second RF switch is connected to an amplifying module corresponding to the time division duplex mode signal.
  • the time division duplexing device includes a first radio frequency switch, a second radio frequency switch, and a circulator; one end of the circulator is connected to one of the two filtering modules; and the other end of the circulator is Connecting a first end of one of the two RF switches; The second end of the first radio frequency switch is connected to the other filtering module, and the second end of the second radio frequency switch is connected to the sending channel;
  • the first RF switch is connected to the another filter module, and the second RF switch is connected to an amplification module corresponding to the time division duplex mode signal.
  • each of the receive filtering modules and each of the transmit filter modules includes at least one filter.
  • the multiplexer provided by the embodiment of the present invention enables the transceiver antenna, the receiving channel, and the transmitting channel to share at least two modes, and the multiplexer disposed inside the radio frequency unit is taken as an example to implement the FDD and TDD mode to the radio unit.
  • the sharing of the transmitting and receiving antennas, the receiving channel and the transmitting channel makes the sharing of the analog part and the digital part of the radio unit a reality.
  • FIG. 1 is a schematic diagram of a multiplexer provided in the prior art
  • FIG. 2 is a schematic diagram of another multiplexer provided in the prior art.
  • FIG. 3 is a schematic diagram of a multiplexer according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a multiplexer according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a multiplexer according to another embodiment of the present invention.
  • the multiplexer provided by the embodiment of the present invention can support at least two mode signals, including but not limited to FDD mode and TDD mode signals.
  • the transceiver antenna, the receiving channel, and the transmitting channel of the device where the multiplexer is located share at least two modes of signals, that is, the signal to be transmitted by the transmitting channel of the device where the multiplexer is located, and the signal received by the transmitting and receiving antennas and the receiving channel are at least Two kinds of mode signals; the signals to be transmitted in the transmitting channel are selected by the respective transmitting and filtering modules corresponding to the respective mode signals, and then the corresponding mode signals can be selected and sent out through the transmitting and receiving antennas; the signals received by the transmitting and receiving antennas correspond to the signals of the respective modes. After the receiving filter module is selected, the corresponding mode signal can be selected, and then combined to the receiving channel after being combined by the combining module.
  • the filtering module used in the embodiment of the present invention performs selection according to a mode supported by the multiplexer.
  • Each of the receive filtering module and the transmit filter module of the embodiment of the present invention includes at least one filter, and each filter The number of filters in the module can be selected according to the requirements of the filter and the space and placement requirements of the board.
  • Each filter includes but is not limited to a sound table filter, a dielectric filter, a cavity filter, and the like.
  • the combiner module includes, but is not limited to, a combiner.
  • the amplification module includes but is not limited to an amplifier.
  • the amplifier may be a low noise amplifier, mainly for amplifying the received signal, and facilitating demodulation of the received signal by a subsequent circuit.
  • the materials of each filter, amplifier, time division duplexer, and combiner are selected according to the requirements of the indicator, the space of the board, and the placement requirements.
  • FIG. 3 is a schematic diagram of a multiplexer according to an embodiment of the present invention.
  • the multiplexer provided in this embodiment is configured to transmit and receive FDD mode and TDD mode signals, and includes: a combiner 101, and an FDD a first receiving filter 102 corresponding to the mode signal, a first amplifier 103 connected between the first receiving filter 102 and the combiner 101, a first transmitting filter 104 corresponding to the FDD mode signal, and a TDD mode signal a filter 105, a second transmit filter 106 corresponding to the TDD mode signal, a time division duplexer 108, a second amplifier 107 connected between the time division duplexer 108 and the combiner 101; the time division duplexer
  • the first end of the 108 is connected to the filter 105, the second end is connected to the second transmitting filter 106, the third end is connected to the second amplifier 107, and the time division duplexing device 108
  • the filter 105 and the second transmission filter 106 corresponding to the TDD mode signal may be the same filter, and since the filter 105 corresponding to the TDD mode signal is disposed between the time division duplexing device 108 and the transmitting and receiving antenna, it is in the present
  • the embodiment also functions to transmit the TDD mode signal.
  • the multiplexer has three external ports: p-Tx, P-Rx, and P-ANT, where P-Tx is connected to a shared transmission channel, and the FDD mode and TDD mode signal to be transmitted on the transmission channel are input to the port through the port.
  • the multiplexer 10 provided in this embodiment may be built in the radio frequency unit or may be independent of the radio frequency unit.
  • the multiplexer provided in this embodiment can work in the TDD mode alone, or can work in the FDD mode alone or in the TDD/FDD dual mode.
  • the specific work methods are as follows:
  • TDD downlink transmission signal is to be transmitted on the shared transmission channel, and the time division duplex device 108 is connected to the TDD downlink transmission link (that is, the link between the second transmission filter 106 and the filter 105 is connected), and Disconnecting the TDD uplink receiving link (ie, breaking the link between the filter 105 and the second amplifier 107), the TDD downlink transmitting signal enters the multiplexer through the P-Tx port, passes through the second transmitting filter 106, and the time division double The device 108 and the filter 105 are passed to the port, and are transmitted to the transceiver antenna.
  • the receiving and receiving antenna receives the TDD uplink receiving signal, and the time division duplexing device 108 connects to the TDD uplink receiving link (ie, the link between the connected filter 105 and the second amplifier 107), and disconnects the TDD downlink transmitting chain.
  • the path ie, disconnecting the link between the second transmit filter 106 and the filter 105
  • the TDD uplink receive signal enters the multiplexer through the ⁇ - ⁇ port, and then passes through the filter 105, the time division duplexer 108, and the second
  • the amplifier 107 and combiner 101 are input to the P-Rx port and enter the shared receiving channel.
  • the FDD downlink transmission signal is to be transmitted on the shared transmission channel, the time division duplexing device 108 disconnects the TDD uplink reception link and the TDD downlink transmission link, and the FDD downlink transmission signal enters the multiplexer through the P-Tx port. It is then passed through the first transmit filter 104 to the P-ANT port for transmission to the transmit and receive antennas.
  • the receiving and receiving antenna receives the FDD uplink receiving signal, the time division duplexing device 108 disconnects the TDD uplink receiving link and the TDD downlink transmitting link, and the FDD uplink receiving signal enters the multiplexer through the P ANT port, and then passes through the first
  • the receiving filter 102 is input to the P-Rx port via the first amplifier 103 and the combiner 101, and enters the shared receiving channel.
  • the TDD/FDD downlink transmission dual mode signal to be transmitted on the shared transmission channel, and the time division duplexing device 108 is connected to the TDD downlink transmission link (ie, the chain connecting the second transmission filter 106 and the filter 105) Road), and disconnect the TDD uplink receiving link (ie, disconnect the link between the filter 105 and the second amplifier 107), the TDD/FDD downlink transmitting dual-mode signal enters the multiplexer through the P-Tx port, respectively enters
  • the FDD mode signal is selected and transmitted to the P-ANT port for transmission to the transceiver antenna; after the second transmit filter 106 is filtered, Select the TDD mode signal, then go through The time division duplexing device 108 and the filter 105 are passed to the P-ANT port and passed to the transceiver antenna.
  • the receiving and receiving antenna receives the TDD/FDD uplink receiving dual mode signal
  • the time division duplexing device 108 connects to the TDD uplink receiving link (ie, the link between the connected filter 105 and the second amplifier 107), and disconnects TDD downlink transmission link (ie, disconnecting the link between the second transmit filter 106 and the filter 105), the TDD/FDD uplink receiving dual mode signal enters the multiplexer through the P-ANT port, and then enters the first reception respectively.
  • the filter 102 and the filter 105 are filtered by the first receiving filter 102, and the FDD mode signal is selected, transmitted to the first amplifier 103 for amplification, and then transmitted to the combiner 101 for combining, and input to the P-Rx port.
  • the TDD mode signal After entering the shared receiving channel, after filtering by the filter 105, the TDD mode signal is selected, and is input to the P-Rx port through the time division duplexing device 108, the second amplifier 107, and the combiner 101, and enters the shared receiving channel.
  • the combiner 101 is configured to combine the FDD uplink receive signal with the TDD uplink receive signal and send it to the shared receive channel.
  • the first receiving filter 102 is configured to select an FDD mode signal in the uplink receiving direction, to pass the FDD mode signal in the uplink receiving direction, and to fully block the TDD mode signal and the FDD mode signal in the downlink transmitting direction to block the filtering.
  • the first amplifier 103 is arranged to amplify the FDD mode signal selected for the uplink reception direction.
  • the first transmit filter 104 is configured to select an FDD mode signal in the downlink transmit direction to pass the FDD mode signal in the downlink transmit direction, to filter out out-of-band spurs, and to prevent spurs from affecting the FDD UL through the P-ANT port (uplink) Road) Receive and TDD UL Receive; Total reflection on TDD mode signals.
  • the second transmit filter 106 is arranged to select a TDD mode signal in the downlink transmit direction to allow the TDD mode signal to pass in the downlink transmit direction while fully reflecting the FDD mode signal.
  • the filter 105 is set to select a TDD mode signal to suppress signals other than the TDD mode signal.
  • the TDD mode signal is selected in the uplink receiving direction to allow the TDD mode signal to pass, and the FDD mode signal is fully reflected.
  • the TDD transmitting out-of-band spurious filtering function is further enhanced to share the out-of-band rejection requirement of the second transmitting and filtering module 106.
  • the second amplifier 107 is arranged to put the TDD mode signal selected in the uplink receiving direction Big.
  • the time division duplexing device 108 is arranged to connect or isolate the filter 105 from the second transmit filter 106 (as in the above, the link between the filter 105 and the second transmit filter 106 at some point in time, at other times)
  • the link between the open filter 105 and the second transmit filter 106) satisfies the time division separation requirement of the TDD, and is also used to ensure interference isolation between the TDD link and the FDD link, when the FDD downlink transmission and the TDD uplink reception
  • the isolation function is enhanced to prevent: FDD downlink transmission signal blocking TDD uplink reception signal, FDD downlink transmission signal in TDD frequency band spurious interference TDD uplink reception, and strengthening T-Tx port and P when TDD uplink reception is performed — The isolation of the Rx port.
  • the receiving frequency band of the first receiving filter 102 may be
  • the transmit band of the first transmit filter 104 may be 2620MHz-2690MHz
  • the receive band of the filter 105 may be 2575MHz-2615MHz
  • all filters may be filtered by the medium. Device.
  • the filter 105 is swapped with the second transmit filter 106.
  • the time division duplexing device 108 is disposed between the filter 105, the second transmitting filter 106 and the P-ANT port, and the first end of the instant duplexing device 108 is connected to the P ANT port, the second The end is connected to the filter 105, and the third end is connected to the second transmit filter 106.
  • the specific structure of the time division duplexing device 108 can be selected according to the switching frequency, the isolation between the circuits, the power, etc., and the number of switches can be selected according to the isolation requirement between the circuits.
  • FIG. 4 is a schematic diagram of a multiplexer according to another embodiment of the present invention.
  • the multiplexer provided in this embodiment is different from the multiplexer shown in FIG. 3 in that: the time division duplexing device 108 includes The two RF switches 108a, 108b further include a dual RF switch 108c.
  • the RF switches 108a, 108b are respectively disposed on the TDD downlink transmit link and the TDD uplink receive link, and the dual RF switch 108c is disposed on the RF switch 108a, 108b and the filter. Between the devices 15.
  • the specific work methods are as follows:
  • the TDD downlink transmission signal is to be transmitted on the shared transmission channel, the RF switch 108a is closed, 108b is disconnected, and the dual RF switch 108c connects the filter 105 to the position 1.
  • the TDD downlink transmission signal is transmitted to the P-ANT port through the P-Tx port, the second transmission filter 106, the RF switch 108a, the position of the two-way RF switch 108c, and the filter 105, and is transmitted to the transceiver antenna.
  • the receiving and receiving antenna receives the TDD uplink receiving signal, the RF switch 108b is closed, 108a is disconnected, the dual RF switch 108c connects the filter 105 to the position 2, and the TDD uplink receiving signal passes through the P-ANT port and the filter 105.
  • the position 2 of the dual RF switch 108c, the RF switch 108b, the second amplifier 107, and the combiner 101 are input to the P-Rx port to enter the shared receiving channel.
  • the FDD downlink transmission signal is to be transmitted on the shared transmission channel, the RF switches 108a, 108b, and the dual RF switch 108c are all disconnected, and the FDD downlink transmission signal is transmitted through the P-Tx port and the first transmission filter 104. Go to the P-ANT port and pass it to the transceiver antenna.
  • the receiving and receiving antenna receives the FDD uplink receiving signal, the RF switch 108a, 108b, and the dual RF switch 108c are disconnected, and the FDD uplink receiving signal passes through the P-ANT port, the first receiving filter 102, and the first amplifier. 103.
  • the combiner 101 inputs to the P-Rx port and enters the shared receiving channel.
  • the downlink transmission process works in TDD/FDD dual mode: the TDD/FDD downlink transmission dual mode signal is to be transmitted on the shared transmission channel, the RF switch 108a is closed, 108b is disconnected, and the dual RF switch 108c is to be filtered.
  • 105 is connected to position 1, and the TDD/FDD downlink transmit dual mode signal enters the first transmit filter 104 and the second transmit filter 106 through the P-Tx port respectively, and the first transmit filter 104 filters and selects the FDD mode signal.
  • the receiving and receiving antenna receives the TDD/FDD uplink receiving dual mode signal, the RF switch 108b is closed, 108a is disconnected, the dual RF switch 108c connects the filter 105 to the position 2, and the TDD/FDD uplink receiving dual mode signal passes.
  • P-ANT ports respectively enter the first receiving filter 102 And the filter 105, the first receiving filter 102 is filtered, then transmitted to the first amplifier 103 for amplification, and then transmitted to the combiner 101 for combining, input to the P-Rx port, and enter the shared receiving channel; the filter 105 After filtering, the position 2 of the two-way RF switch 108c, the RF switch 108b, the second amplifier 107, and the combiner 101 are input to the P-Rx port to enter the shared receiving channel.
  • the filter 105 is swapped with the second transmit filter 106.
  • FIG. 5 is a schematic diagram of a multiplexer according to another embodiment of the present invention. Please refer to FIG. 5: The multiplexer provided in this embodiment is different from the multiplexer shown in FIG. 4 in that: the time division duplex device 108 is apart from In addition to the two RF switches 108a, 108b, a circulator 108c' is disposed. The RF switches 108a, 108b are respectively disposed on the TDD downlink transmission link and the TDD uplink receiving link, and the circulator 108c' is disposed on the RF switches 108a, 108b. Between the filters 15. The working process is the multiplexer shown in Figure 4 above.
  • the multiplexer provided by the embodiment of the present invention enables the transceiver antenna, the receiving channel, and the transmitting channel to share at least two modes, for example, FDD and TDD mode sharing, so that the analog part in the radio frequency unit Sharing of points and numbers becomes a reality

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Abstract

本发明实施例公开一种多工器，该多工器设置在一收发天线与接收通道、发送通道之间；收发天线、接收通道和发送通道为至少两种模式信号共享；多工器包括合路模块，以及与各模式信号一一对应的发射滤波模块、接收滤波模块和放大模块；各发射滤波模块用于从发送通道待发射的信号中选择相应模式信号传递至收发天线；各接收滤波模块用于从收发天线接收的信号中选择相应模式信号传递至与其连接的放大模块；经放大模块放大后传递至合路模块；合路模块进行合路处理，并传递给接收通道。本发明实施例通过以上技术方案，解决多模信号如何共享发射通道、接收通道及收发天线的问题。

Description

一种多工器
技术领域
本发明涉及通讯领域， 尤其涉及一种多工器。 背景技术
目前， 无线通讯系统中， FDD ( Frequency Division Duplexing, 频分双工） 模式和 TDD ( Time Division Duplexing, 时分双工 )模式已经成为主流的两种 通讯模式， 由于许多运营商都拥有 FDD和 TDD两种牌照， 所以有迫切需求 来部署两种系统， 对于部署的射频单元的简单性， 统一性以及体积和重量方 面都提出了很高的要求。 目前， 对于双模系统的部署， 已经有两种方案， 一 种是通过外置器件实现共天馈方案， 如图 1 , 01、 04为 FDD频段的接收滤波 器， 02、 05为 FDD频段的发射滤波器， 03、 06为 TDD频段的滤波器， 此方 案将两种独立的 FDD射频单元和 TDD射频单元通过外置多工器， 将两个系 统连接在一起， 此方案工程安装困难， 造价高； 另一种是通道独立模式， 如 图 2, FDD频段的接收滤波器 01' 、 FDD频段的发射滤波器 02' 、 TDD频 段的滤波器 03' 组合在一起， 此方案仅仅是在 TDD电路与 FDD电路物理上 拼接在一起（如一个电路板上） ， 没有共享发射和接收通道， 仅将两套系统 放置在同一个壳体内， 对外的体现形式是一个射频单元， 但是本质上仍是两 套独立系统。
发明内容
本发明实施例提供一种多工器， 解决多模信号如何共享发送通道、 接收 通道及收发天线的问题。
为解决上述技术问题， 本发明实施例釆用以下技术方案：
一种多工器， 所述多工器设置在一收发天线与接收通道、发送通道之间； 所述收发天线、 接收通道和发送通道为至少两种模式信号共享； 所述多工器 包括：
合路模块， 以及与各模式信号一一对应的发射滤波模块、 接收滤波模块 和放大模块；
各发射滤波模块设置成从所述发送通道待发射的信号中选择相应模式信 号， 传递至所述收发天线；
各接收滤波模块设置成从所述收发天线接收的信号中选择相应模式信 号， 传递至与其连接的放大模块；
各放大模块设置成将与其连接的接收滤波模块选择得到的相应模式信号 进行放大后传递至所述合路模块；
所述合路模块设置成接收经各放大模块放大后的信号，并进行合路处理， 将合路后的信号传递给所述接收通道。
可选的， 所述至少两种模式信号包括两种模式信号， 分别是频分双工模 式信号和时分双工模式信号。
可选的， 所述多工器还包括时分双工装置， 设置成连接或隔离与所述时 分双工模式信号对应的发射滤波模块和接收滤波模块。
可选的， 与所述时分双工模式信号对应的发射滤波模块和接收滤波模块 为相同的两个滤波模块， 所述时分双工装置的第一端连接所述两个滤波模块 中的一个， 第二端连接所述两个滤波模块中的另一个滤波模块， 第三端和所 述发送通道连接；或者第三端与所述时分双工模式信号对应的放大模块连接。
可选的， 所述时分双工装置包括第一射频开关、 第二射频开关和一双路 射频开关； 所述双路射频开关的第一端连接所述两个滤波模块中的一个； 所 述双路射频开关的另一端与所述第一、第二射频开关中的一个的第一端连接， 或既不连接第一射频开关也不连接第二射频开关；
所述第一射频开关的第二端与所述另一个滤波模块连接， 所述第二射频 模块的第二端和所述发送通道连接；
或者所述第一射频开关的第一端与所述另一个滤波模块连接， 所述第二 射频开关的第二端和与所述时分双工模式信号对应的放大模块连接。
可选的， 所述时分双工装置包括第一射频开关、 第二射频开关和一环形 器； 所述环形器的一端连接所述两个滤波模块中的一个； 所述环形器的另一 端与所述两个射频开关中的一个的第一端连接； 所述第一射频开关的第二端与所述另一个滤波模块连接， 所述第二射频 开关的第二端和所述发送通道连接；
或者所述第一射频开关与所述另一个滤波模块连接， 所述第二射频开关 和与所述时分双工模式信号对应的放大模块连接。
可选的， 各接收滤波模块、 各发射滤波模块包括至少一个滤波器。
本发明实施例提供的多工器， 使得收发天线、 接收通道和发送通道为至 少两种模式信号共享，以设置于射频单元内部的多工器为例，可以实现对 FDD 和 TDD模式对射频单元的收发天线、接收通道和发送通道的共享，使得射频 单元中模拟部分和数字部分共享成为了现实。 附图概述
图 1为现有技术中提供的一种多工器的示意图；
图 2为现有技术中提供的另一种多工器的示意图
图 3为本发明一实施例提供的多工器的示意图
图 4为本发明另一实施例提供的多工器的示意图；
图 5为本发明另一实施例提供的多工器的示意图。
本发明的较佳实施方式
本发明实施例提供的多工器可支持至少两种模式信号， 包括但不局限于 FDD模式和 TDD模式信号。 多工器所在设备的收发天线、 接收通道和发送 通道为至少两种模式信号共享， 也就是说， 多工器所在设备的发送通道待发 射的信号， 以及收发天线、 接收通道接收的信号是至少两种模式信号； 发送 通道待发射的信号经过与各模式信号对应各发射滤波模块选择后， 可以选择 出相应模式信号， 再通过收发天线发送出去； 收发天线接收的信号经过与各 模式信号对应各接收滤波模块选择后， 可以选择出相应模式信号， 再经过合 路模块合路后输送至接收通道。
本发明实施例用到的滤波模块根据多工器所支持的模式来进行选择。 本 发明实施例的各接收滤波模块、 发射滤波模块包括至少一个滤波器， 各滤波 模块中的滤波器数量， 可根据滤波器的指标要求和电路板的空间及摆放要求 进行选择， 各滤波器包括是但不限于声表滤波器、 介质滤波器、 腔体滤波器 等。 合路模块包括但不局限于合路器。 放大模块包括但不局限于放大器， 放 大器可以为低噪声放大器， 主要用于对于对所接收的信号进行放大， 有利于 后面电路对于接收信号进行解调。 各滤波器、 放大器、 时分双工装置、 合路 器的材质根据指标要求、 电路板的空间及摆放要求进行选择。
下面通过具体实施方式结合附图对本发明实施例作进一步详细说明。 图 3为本发明一实施例提供的多工器的示意图， 请参考图 3: 本实施例 提供的多工器用于发射和接收 FDD模式和 TDD模式信号， 其包括： 合路器 101、 与 FDD模式信号对应的第一接收滤波器 102、 连接在第一接收滤波器 102与合路器 101之间的第一放大器 103、 与 FDD模式信号对应的第一发射 滤波器 104、与 TDD模式信号对应的滤波器 105、 与 TDD模式信号对应的第 二发射滤波器 106、 时分双工装置 108、 连接在时分双工装置 108与合路器 101之间的第二放大器 107;所述时分双工装置 108第一端与滤波器 105连接， 第二端与第二发射滤波器 106连接， 第三端与第二放大器 107连接， 所述时 分双工装置 108设置成将所述第二端和第三端中的一个与所述第一端连接， 或将第二端、 第三端均与所述第一端断开连接。 与 TDD模式信号对应的滤波 器 105与第二发射滤波器 106可以为相同的滤波器，由于与 TDD模式信号对 应的滤波器 105设置在时分双工装置 108与收发天线之间， 所以它在本实施 例中还起到对 TDD模式信号的发射作用。
该多工器对外有三个端口： p— Tx、 P— Rx和 P— ANT, 其中， P— Tx接共享 的发送通道，发送通道上有待发送的 FDD模式和 TDD模式信号， 通过该端 口输入到多工器； P— ANT接收发天线； P— Rx接共享的接收通道，通过收发天 线接收到信号， 各自抗阻塞滤波以及低噪放大后， 通过该端口输入到接收通 道， 是多工器的上行接收输出端。
本实施例提供的多工器 10可以内置于射频单元中，也可以独立在射频单 元之外。 本实施例提供的多工器， 可以单独工作在 TDD模式， 也可以单独工 作在 FDD模式， 也可以工作在 TDD/FDD双模模式。 具体工作方式如下：
1 )单独工作在 TDD模式下 下行发射过程： 共享的发送通道上待发送的为 TDD下行发射信号， 时分 双工装置 108连通 TDD下行发射链路（即连通第二发射滤波器 106与滤波器 105之间的链路 ) , 并断开 TDD上行接收链路（即断开滤波器 105与第二放 大器 107之间的链路） ， TDD下行发射信号通过 P— Tx端口进入多工器， 经 过第二发射滤波器 106、 时分双工装置 108、 滤波器 105传递到 Ρ— ΑΝΤ端口， 传递到收发天线。
上行接收过程： 收发天线接收的为 TDD上行接收信号， 时分双工装置 108连通 TDD上行接收链路 (即连通滤波器 105与第二放大器 107之间的链 路 ) , 并断开 TDD下行发射链路（即断开第二发射滤波器 106与滤波器 105 之间的链路） ， TDD上行接收信号通过 Ρ— ΑΝΤ端口进入多工器， 然后经过 滤波器 105、 时分双工装置 108、 第二放大器 107、 合路器 101输入到 P— Rx 端口， 进入共享的接收通道。
2 )单独工作在 FDD模式下
下行发射过程： 共享的发送通道上待发送的为 FDD下行发射信号， 时分 双工装置 108断开 TDD上行接收链路和 TDD下行发射链路， FDD 下行发射 信号通过 P— Tx端口进入多工器，然后通过第一发射滤波器 104传递到 P— ANT 端口， 传递到收发天线。
上行接收过程： 收发天线接收的为 FDD上行接收信号， 时分双工装置 108断开 TDD上行接收链路和 TDD下行发射链路， FDD上行接收信号通过 P ANT端口进入多工器，然后通过第一接收滤波器 102、经过第一放大器 103、 合路器 101输入到 P— Rx端口， 进入共享的接收通道。
3 )工作在 TDD/FDD双模模式下
下行发射过程： 共享的发送通道上待发送的为 TDD/FDD下行发射双模 信号， 时分双工装置 108连通 TDD下行发射链路 (即连通第二发射滤波器 106与滤波器 105之间的链路 ) , 并断开 TDD上行接收链路（即断开滤波器 105与第二放大器 107之间的链路）， TDD/FDD下行发射双模信号通过 P— Tx 端口进入多工器， 分别进入第一发射滤波器 104和第二发射滤波器 106, 第 一发射滤波器 104滤波后， 选择出 FDD模式信号， 传递到 P— ANT端口， 传 递到收发天线； 第二发射滤波器 106滤波后， 选择出 TDD模式信号， 再经过 时分双工装置 108、 滤波器 105传递到 P— ANT端口， 传递到收发天线。
上行接收过程： 收发天线接收的为 TDD/FDD上行接收双模信号， 时分 双工装置 108连通 TDD上行接收链路 (即连通滤波器 105与第二放大器 107 之间的链路 ) , 并断开 TDD下行发射链路（即断开第二发射滤波器 106与滤 波器 105之间的链路 ) , TDD/FDD上行接收双模信号通过 P— ANT端口进入 多工器， 然后分别进入第一接收滤波器 102和滤波器 105, 第一接收滤波器 102滤波后， 选择出 FDD模式信号， 传递至第一放大器 103进行放大， 再传 递至合路器 101进行合路， 输入到 P— Rx端口， 进入共享的接收通道； 滤波器 105滤波后，选择出 TDD模式信号，经过时分双工装置 108、第二放大器 107、 合路器 101输入到 P— Rx端口， 进入共享的接收通道。
其中， 合路器 101设置成将 FDD上行接收信号与 TDD上行接收信号进 行合路， 送入共享的接收通道。
第一接收滤波器 102设置成是在上行接收方向选择出 FDD模式信号，让 上行接收方向上的 FDD模式信号通过， 全反射 TDD模式信号和下行发射方 向上的 FDD模式信号， 抗阻塞滤波。
第一放大器 103设置成是对上行接收方向选择出的 FDD模式信号进行放 大。
第一发射滤波器 104设置成是在下行发射方向选择出 FDD模式信号，让 下行发射方向上 FDD模式信号通过， 滤除带外杂散， 防止杂散通过 P— ANT 端口影响 FDD UL (上行链路 )接收以及 TDD UL接收； 对 TDD模式信号全 反射。
第二发射滤波器 106设置成是在下行发射方向选择出 TDD模式信号，让 在下行发射方向 TDD模式信号通过， 同时对 FDD模式信号进行全反射。
滤波器 105设置成是选择出 TDD模式信号， 抑制 TDD模式信号以外的 信号。 在上行接收方向选择出 TDD模式信号， 让 TDD模式信号通过， 全反 射 FDD模式信号； 在下行发射方向， 进一步加强 TDD发射带外杂散滤波作 用， 分担第二发射滤波模块 106带外抑制要求。
第二放大器 107设置成是对上行接收方向选择出的 TDD模式信号进行放 大。
时分双工装置 108设置成连接或隔离滤波器 105与第二发射滤波器 106 (如上文中，在某些时刻连通滤波器 105和第二发射滤波器 106之间的链路， 在另外一些时刻断开滤波器 105和第二发射滤波器 106之间的链路） ， 满足 TDD的时分分离要求 ,同时还用于保证 TDD链路和 FDD链路间的干扰隔离 , 当 FDD 下行发射与 TDD上行接收同时进行时，增强隔离作用，以防止： FDD 下行发射信号阻塞 TDD 上行接收信号、 FDD 下行发射信号在 TDD频段杂 散干扰 TDD上行接收，以及当 TDD上行接收进行时，加强 P— Tx端口与 P— Rx 端口的隔离度。
该 实施例 中 ， 第一接收滤波器 102 的接收频段可以为
2500ΜΗζ-2570ΜΗζ , 第 一发射滤波器 104 的发射频段可以为 2620MHz-2690MHz, 滤波器 105的接收频段、 第二发射滤波器 106的发射频 段可以为 2575MHz-2615MHz, 各滤波器可以全部釆用介质滤波器。
在另一实施例中， 将滤波器 105与第二发射滤波器 106互换位置。
在另一实施例中， 将时分双工装置 108设置于滤波器 105、 第二发射滤 波器 106与 P— ANT端口之间， 即时分双工装置 108的第一端连接 P ANT端 口， 第二端连接滤波器 105, 第三端连接第二发射滤波器 106。
时分双工装置 108的具体结构可以根据开关切换频率、 电路间隔离度、 功率等要求， 选用单子开关、 PIN管开关等， 开关数量可根据电路间隔离度 要求来选择。
图 4为本发明另一实施例提供的多工器的示意图， 请参考图 4: 本实施 例提供的多工器与图 3所示多工器的不同之处在于： 时分双工装置 108包括 两个射频开关 108a、 108b,还包括一双路射频开关 108c,射频开关 108a、 108b 分别设置于 TDD下行发射链路和 TDD上行接收链路，双路射频开关 108c设 置在射频开关 108a、 108b与滤波器 15之间。 具体工作方式如下：
1 )单独工作在 TDD模式下
下行发射过程： 共享的发送通道上待发送的为 TDD下行发射信号，射频 开关 108a闭合， 108b断开， 双路射频开关 108c将滤波器 105连接至位置 1 , TDD下行发射信号通过 P— Tx端口、 第二发射滤波器 106、 射频开关 108a、 双路射频开关 108c的位置 1、 滤波器 105传递到 P— ANT端口， 传递到收发 天线。
上行接收过程： 收发天线接收的为 TDD上行接收信号， 射频开关 108b 闭合， 108a断开， 双路射频开关 108c将滤波器 105连接至位置 2, TDD上行 接收信号通过 P— ANT端口、 滤波器 105、 双路射频开关 108c的位置 2、 射频 开关 108b、 第二放大器 107、合路器 101输入到 P— Rx端口， 进入共享的接收 通道。
2 )单独工作在 FDD模式下
下行发射过程： 共享的发送通道上待发送的为 FDD下行发射信号， 射频 开关 108a、 108b, 双路射频开关 108c均断开， FDD 下行发射信号通过 P— Tx 端口、 第一发射滤波器 104传递到 P—ANT端口， 传递到收发天线。
上行接收过程： 收发天线接收的为 FDD上行接收信号， 射频开关 108a、 108b, 双路射频开关 108c均断开， FDD上行接收信号通过 P—ANT端口、 第 一接收滤波器 102、 经过第一放大器 103、 合路器 101输入到 P— Rx端口， 进 入共享的接收通道。
3 )工作在 TDD/FDD双模模式下 下行发射过程： 共享的发送通道上待发送的为 TDD/FDD下行发射双模 信号， 射频开关 108a闭合， 108b断开， 双路射频开关 108c将滤波器 105连 接至位置 1 , TDD/FDD下行发射双模信号通过 P— Tx端口分别进入第一发射 滤波器 104和第二发射滤波器 106,第一发射滤波器 104滤波后，选择出 FDD 模式信号， 传递到 P— ANT端口， 传递到收发天线； 第二发射滤波器 106滤波 后， 选择出 TDD模式信号， 再经过射频开关 108a、 双路射频开关 108c的位 置 1、 滤波器 105传递到 P— ANT端口， 传递到收发天线。 上行接收过程： 收发天线接收的为 TDD/FDD上行接收双模信号， 射频 开关 108b闭合， 108a断开， 双路射频开关 108c将滤波器 105连接至位置 2, TDD/FDD上行接收双模信号通过 P— ANT端口分别进入第一接收滤波器 102 和滤波器 105 , 第一接收滤波器 102滤波后， 传递至第一放大器 103进行放 大，再传递至合路器 101进行合路，输入到 P— Rx端口，进入共享的接收通道； 滤波器 105滤波后， 经过双路射频开关 108c的位置 2、 射频开关 108b、 第二 放大器 107、 合路器 101输入到 P— Rx端口， 进入共享的接收通道。 在另一实施例中， 将滤波器 105与第二发射滤波器 106互换位置。
在另一实施例中， 将滤波器 105设置在第二放大器 107与射频开关 108b 之间， 第二发射滤波器 106指标性能相应调整。 图 5为本发明另一实施例提供的多工器的示意图， 请参考图 5: 本实施 例提供的多工器与图 4所示多工器的不同之处在于： 时分双工装置 108除了 包括两个射频开关 108a、 108b以外，还包括一环形器 108c' ,射频开关 108a、 108b分别设置于 TDD下行发射链路和 TDD上行接收链路，环形器 108c' 设 置在射频开关 108a、 108b与滤波器 15之间。 其工作过程如同上述图 4所示 的多工器。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
尽管为示例目的， 已经公开了本发明的优选实施例， 本领域的技术人员 将意识到各种改进、 增加和取代也是可能的， 因此， 本发明的范围应当不限 于上述实施例。
工业实用性
本发明实施例提供的多工器， 使得收发天线、 接收通道和发送通道为至 少两种模式信号共享， 例如 FDD和 TDD模式共享， 使得射频单元中模拟部 分和数字部分共享成为了现实

Claims

权 利 要 求 书
1、 一种多工器， 所述多工器设置在一收发天线与接收通道、 发送通道之 间； 所述收发天线、 接收通道和发送通道为至少两种模式信号共享； 所述多 工器包括：
合路模块， 以及与各模式信号一一对应的发射滤波模块、 接收滤波模块 和放大模块；
各发射滤波模块设置成从所述发送通道待发射的信号中选择相应模式信 号， 传递至所述收发天线；
各接收滤波模块设置成从所述收发天线接收的信号中选择相应模式信 号， 传递至与其连接的放大模块；
各放大模块设置成将与其连接的接收滤波模块选择得到的相应模式信号 进行放大后传递至所述合路模块；
所述合路模块设置成接收经各放大模块放大后的信号，并进行合路处理， 将合路后的信号传递给所述接收通道。
2、 如权利要求 1所述的多工器， 其中， 所述至少两种模式信号包括两种 模式信号， 分别是频分双工模式信号和时分双工模式信号。
3、 如权利要求 2所述的多工器， 还包括：
时分双工装置， 设置成连接或隔离与所述时分双工模式信号对应的发射 滤波模块和接收滤波模块。
4、 如权利要求 3所述的多工器， 其中， 与所述时分双工模式信号对应的 发射滤波模块和接收滤波模块为相同的两个滤波模块， 所述时分双工装置的 第一端连接所述两个滤波模块中的一个， 第二端连接所述两个滤波模块中的 另一个滤波模块， 第三端和所述发送通道连接； 或者第三端与所述时分双工 模式信号对应的放大模块连接。
5、 如权利要求 4所述的多工器， 其中， 所述时分双工装置包括第一射频 开关、 第二射频开关和一双路射频开关； 所述双路射频开关的第一端连接所 述两个滤波模块中的一个； 所述双路射频开关的另一端与所述第一、 第二射 频开关中的一个的第一端连接， 或既不连接第一射频开关也不连接第二射频 开关； 所述第一射频开关的第二端与所述另一个滤波模块连接， 所述第二射频 模块的第二端和所述发送通道连接；
或者所述第一射频开关的第一端与所述另一个滤波模块连接， 所述第二 射频开关的第二端和与所述时分双工模式信号对应的放大模块连接。
6、 如权利要求 4所述的多工器， 其中， 所述时分双工装置包括第一射频 开关、 第二射频开关和一环形器； 所述环形器的一端连接所述两个滤波模块 中的一个；所述环形器的另一端与所述两个射频开关中的一个的第一端连接； 所述第一射频开关的第二端与所述另一个滤波模块连接， 所述第二射频 开关的第二端和所述发送通道连接；
或者所述第一射频开关与所述另一个滤波模块连接， 所述第二射频开关 和与所述时分双工模式信号对应的放大模块连接。
7、 如权利要求 1至 6中任一项所述的多工器， 其中， 各接收滤波模块、 各发射滤波模块包括至少一个滤波器。
PCT/CN2013/081987 2012-11-21 2013-08-21 一种多工器 Ceased WO2013189404A1 (zh)

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