WO2017121184A1 - Radio frequency front-end circuit and terminal - Google Patents

Radio frequency front-end circuit and terminal Download PDF

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Publication number
WO2017121184A1
WO2017121184A1 PCT/CN2016/106351 CN2016106351W WO2017121184A1 WO 2017121184 A1 WO2017121184 A1 WO 2017121184A1 CN 2016106351 W CN2016106351 W CN 2016106351W WO 2017121184 A1 WO2017121184 A1 WO 2017121184A1
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frequency
antenna
signal
transceiver
multiplexer
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PCT/CN2016/106351
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French (fr)
Chinese (zh)
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秦华清
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深圳前海达闼云端智能科技有限公司
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Publication of WO2017121184A1 publication Critical patent/WO2017121184A1/en

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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

Definitions

  • the present invention relates to the field of wireless communication technologies, and can be applied to the field of cloud intelligent robots, and in particular, to a radio frequency front end circuit and a terminal.
  • Figure 1 is a schematic diagram of a conventional RF front-end circuit design. As shown in Figure 1, the current RF front-end circuit design usually concentrates all frequency bands to one antenna outlet. When carrier aggregation is introduced, the corresponding RF front-end is added. Devices, because each RF front-end device introduces insertion loss, which reduces the transceiver performance of the device.
  • the embodiment of the present application proposes a radio frequency front-end circuit and a terminal, which are used to overcome the problem of affecting the transceiver performance of the device caused by the introduction of the radio frequency front-end device.
  • the embodiment of the present application provides a radio frequency front end circuit, including:
  • the secondary antenna covers a first operating frequency, and is coupled to the multiplexer;
  • the first operating frequency includes a frequency corresponding to a frequency point in one or more frequency bands;
  • the multiplexer is configured to transmit a signal from the secondary antenna to a transceiver or to transmit a signal from the transceiver to the secondary antenna.
  • the embodiment of the present application provides a terminal, including: the foregoing radio frequency front end circuit.
  • the embodiment of the present application provides a radio frequency front-end circuit, where a signal of a first working frequency is received or transmitted through a sub-antenna plus a multiplexer, and no RF front-end device is introduced, for example, an antenna switch affects the transceiver performance of the device, so Effectively reducing the letter to the first working frequency The insertion loss of the number improves the transmission and reception performance of the communication device.
  • the terminal provided by the embodiment of the present application includes the radio frequency front end circuit, and the signal of the first working frequency is received or transmitted only through the sub antenna and the multiplexer, without passing through the antenna switch, and the device is not affected by the introduction of the radio frequency front end device.
  • Transceiver performance can effectively reduce the insertion loss of the first working frequency signal and improve the transceiving performance of the communication device.
  • FIG. 1 is a schematic diagram of a conventional RF front-end circuit design scheme
  • FIG. 2 is a schematic structural diagram of a radio frequency front end circuit in an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of an embodiment of a radio frequency front end circuit in an embodiment of the present application.
  • the radio frequency front end circuit may include:
  • the secondary antenna covers a first operating frequency, and is coupled to the multiplexer;
  • the first operating frequency includes a frequency corresponding to a frequency point in one or more frequency bands;
  • the multiplexer is configured to transmit a signal from the secondary antenna to a transceiver or to transmit a signal from the transceiver to the secondary antenna.
  • the method proposed in the embodiment of the present application The RF front-end circuit receives or transmits the frequency sensitive to the insertion loss by the secondary antenna, and the secondary antenna is connected to the transceiver through only one multiplexer, and is connected to the existing antenna through the duplexer and the antenna switch.
  • Different devices reduce the components of the antenna switch, so the insertion loss can be effectively reduced and the transmission and reception performance can be improved.
  • Each of the secondary antennas may cover multiple frequency points of one or more frequency bands, and the frequency range specifically covered by the secondary antennas and the number of secondary antennas may be determined according to actual needs.
  • the multiplexer connects signals of different frequency bands or frequencies to the corresponding channels of the transceiver.
  • the embodiment of the present application provides a radio frequency front-end circuit, which receives or transmits a signal of a first working frequency through a sub-antenna plus a multiplexer, and can effectively reduce insertion loss of the first working frequency signal without passing through an antenna switch. Improve the transceiver performance of communication devices.
  • the primary antenna may cover a second operating frequency; the first operating frequency is not included in the second operating frequency.
  • the first working frequency may not be included in the second working frequency covered by the primary antenna.
  • the main antenna may be connected to a dual transmitter for transmitting a signal from the main antenna to the transceiver via a main antenna switch, or transmitting a signal from the transceiver via The main antenna switch is transmitted to the main antenna.
  • the main antenna covering the second working frequency may adopt an existing front-end circuit design, and the main antenna is connected to the transceiver via a duplexer.
  • the number of the secondary antennas may be multiple.
  • the operating frequency of the RF front-end circuit includes multiple frequency bands that are sensitive to insertion loss
  • multiple secondary antennas may be used to cover these insertion loss-sensitive frequency bands.
  • the frequency range covered by the secondary antenna and the number of the secondary antennas may be determined according to actual needs, and are not specifically limited herein.
  • the first working frequency may include: Bands Band1, Band2, Band3, Multiple frequency points in any one or more of Band4, Band7, Band38, Band39, Band40, Band41.
  • frequency band B1 upstream frequency: 1920 ⁇ 1980MHz, downlink frequency: 2110 ⁇ 2170MHz
  • B2 uplink frequency: 1850 ⁇ 1910MHz, downlink frequency: 1930 ⁇
  • B3 upstream frequency: 1710 ⁇ 1785MHz, downlink frequency: 1805 ⁇ 1880MHz
  • B4 upstream frequency: 1710 ⁇ 1755MHz, downlink frequency: 2110 ⁇ 2155MHz
  • B7 upstream frequency: 2500 ⁇ 2570MHz
  • downlink frequency is: 2620 ⁇ 2690MHz
  • B38 frequency: 2570 ⁇ 2620MHz
  • B39 frequency: 1880 ⁇ 1920MHz
  • B40 frequency: 2300 ⁇ 2400MHz
  • B41 frequency: 2496 ⁇ 2690MHz
  • the frequency of these bands (corresponding to the downlink frequency) and the transmission frequency (corresponding to the uplink frequency) are between 1700MHz and 2700MHz.
  • the sub-antenna may be used to transmit and receive frequencies other than the above frequencies.
  • the first working frequency may include: a frequency corresponding to multiple frequency points in any two frequency bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, and Band41.
  • any two frequency bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, and Band41 can be covered by one sub-antenna, such as B1+B3, B2+B4, B7+B41, B39+B41, and so on.
  • FIG. 3 is a schematic structural diagram of an embodiment of a radio frequency front end circuit according to an embodiment of the present application.
  • frequencies of B2 and B4 are covered by a sub antenna, and are connected to a transceiver via a multiplexer. This setting The frequency of the supported frequencies other than B2 and B4, that is, the second operating frequency, is covered by the main antenna using the existing design.
  • the multiplexer can be a quadruple.
  • the quadruple combines four filters to share one node.
  • the duplexer's passband loading and isolation targets are the same as the duplexer.
  • the quadruplexer allows two bands to be connected to the antenna at the same time, which is very useful for applications such as carrier aggregation. In carrier aggregation, one communication device may need to receive two frequency bands simultaneously.
  • the secondary antenna When the secondary antenna is used to implement any two bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, Band41, the secondary antenna covering the two frequency bands (referred to as small antenna in FIG. 3) is passed through the four-worker. Connect to the transceiver.
  • the circuit may further include:
  • the coaxial switch being respectively connected to the secondary antenna and the multiplexer;
  • the secondary antenna is coupled to the transceiver via the coaxial switch and the multiplexer.
  • a coaxial switch is required to switch.
  • the secondary antenna covers more than three frequency bands, it can be switched to a four-worker after switching through a single-pole double-throw switch.
  • the connecting the antenna to the transceiver through the coaxial switch and the multiplexer may specifically include:
  • the coaxial switch switches to a first path of a corresponding multiplexer according to a signal frequency and a switch control logic from the secondary antenna, and the signal from the secondary antenna is transmitted to the transceiver via the first path Or, switching to the second path of the corresponding multiplexer according to the signal frequency from the transceiver and the switch control logic, and transmitting the signal from the transceiver to the secondary antenna via the second path.
  • the signal from the secondary antenna or the signal from the transceiver can be switched to the corresponding path of the corresponding multiplexer through the coaxial switch.
  • the RF front-end circuit can include two quad-workers, and the working frequency of the quad-worker 1 covers Band1 and Band3, and the operating frequency of the quad-worker 2 Cover Band2 and Band4. If the signal frequency f a from the secondary antenna belongs to the frequency range of Band 4, according to the signal frequency f a and the switch control logic, the coaxial switch will switch to the Band 4 signal receiving path of the duplexer 2 and pass through the Band 4 signal receiving path. The signal from the secondary antenna is transmitted to the transceiver.
  • the coaxial switch will switch to the Band1 signal transmission path in the duplexer 1 and pass through the Band1 signal transmission path.
  • the signal from the transceiver is transmitted to the secondary antenna via a coaxial switch.
  • the embodiment of the present application provides a terminal based on the above RF front-end circuit.
  • the terminal may include: the radio frequency front end circuit described above.
  • the terminal provided by the embodiment of the present application, because the radio frequency front end circuit is included, the receiving or transmitting of the signal of the first working frequency is only through the sub antenna and the multiplexer, and does not pass through the antenna switch, thereby effectively reducing the first work.
  • the insertion loss of the frequency signal improves the transceiving performance of the communication device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

Provided are a radio frequency front-end circuit and terminal, comprising: a master antenna; and a slave antenna, wherein the slave antenna covers a first working frequency and is connected to a multiplexer, the first working frequency comprises frequencies corresponding to a plurality of frequency points in one or more frequency bands, the multiplexer is used for transmitting a signal from the slave antenna to a transceiver or transmitting a signal from the transceiver to the slave antenna. With the adoption of the technical solution of the present application, the insertion loss of a first working frequency signal can be reduced effectively, and the transceiving performance of a communication device is improved.

Description

一种射频前端电路及终端RF front-end circuit and terminal 技术领域Technical field
本申请涉及无线通信技术领域，可以应用于云端智能机器人领域，特别涉及一种射频前端电路及终端。The present invention relates to the field of wireless communication technologies, and can be applied to the field of cloud intelligent robots, and in particular, to a radio frequency front end circuit and a terminal.
背景技术Background technique
图1为现有的射频前端电路设计方案示意图，如图1所示，目前的射频前端电路设计，通常是把所有的频段都集中到一个天线出口，在引入载波聚合时，增加相应的射频前端器件，因为每个射频前端器件都会引入***损耗，会降低设备的收发性能。Figure 1 is a schematic diagram of a conventional RF front-end circuit design. As shown in Figure 1, the current RF front-end circuit design usually concentrates all frequency bands to one antenna outlet. When carrier aggregation is introduced, the corresponding RF front-end is added. Devices, because each RF front-end device introduces insertion loss, which reduces the transceiver performance of the device.
发明内容Summary of the invention
本申请实施例提出了一种射频前端电路及终端，用以克服因引入射频前端器件导致影响设备收发性能的问题。The embodiment of the present application proposes a radio frequency front-end circuit and a terminal, which are used to overcome the problem of affecting the transceiver performance of the device caused by the introduction of the radio frequency front-end device.
本申请实施例提供了一种射频前端电路，包括：The embodiment of the present application provides a radio frequency front end circuit, including:
主天线；Main antenna
副天线，所述副天线覆盖第一工作频率，与多工器连接；所述第一工作频率包括一个或多个频段中的频点对应的频率；a secondary antenna, the secondary antenna covers a first operating frequency, and is coupled to the multiplexer; the first operating frequency includes a frequency corresponding to a frequency point in one or more frequency bands;
所述多工器用于将来自所述副天线信号传输至收发器，或者，将来自所述收发器的信号传输至所述副天线。The multiplexer is configured to transmit a signal from the secondary antenna to a transceiver or to transmit a signal from the transceiver to the secondary antenna.
本申请实施例提供了一种终端，包括：上述射频前端电路。The embodiment of the present application provides a terminal, including: the foregoing radio frequency front end circuit.
本申请有益效果如下：The beneficial effects of the application are as follows:
本申请实施例提供了一种射频前端电路，通过副天线加多工器进行第一工作频率的信号的接收或发送，没有引入射频前端器件，例如经过天线开关而导致影响设备收发性能，因此可以有效减少对所述第一工作频率信 号的插损，提高通信设备的收发性能。The embodiment of the present application provides a radio frequency front-end circuit, where a signal of a first working frequency is received or transmitted through a sub-antenna plus a multiplexer, and no RF front-end device is introduced, for example, an antenna switch affects the transceiver performance of the device, so Effectively reducing the letter to the first working frequency The insertion loss of the number improves the transmission and reception performance of the communication device.
本申请实施例提供的终端，由于包括了上述射频前端电路，第一工作频率的信号的接收或发送仅通过副天线和多工器，而不经过天线开关，没有因为引入射频前端器件导致影响设备收发性能，可以有效减少对所述第一工作频率信号的插损，提高通信设备的收发性能。The terminal provided by the embodiment of the present application includes the radio frequency front end circuit, and the signal of the first working frequency is received or transmitted only through the sub antenna and the multiplexer, without passing through the antenna switch, and the device is not affected by the introduction of the radio frequency front end device. Transceiver performance can effectively reduce the insertion loss of the first working frequency signal and improve the transceiving performance of the communication device.
附图说明DRAWINGS
下面将参照附图描述本发明的具体实施例，其中：Specific embodiments of the present invention will be described below with reference to the accompanying drawings, in which:
图1为现有的射频前端电路设计方案示意图；1 is a schematic diagram of a conventional RF front-end circuit design scheme;
图2为本申请实施例中的射频前端电路的结构示意图；2 is a schematic structural diagram of a radio frequency front end circuit in an embodiment of the present application;
图3为本申请实施例中的射频前端电路实施例的结构示意图。FIG. 3 is a schematic structural diagram of an embodiment of a radio frequency front end circuit in an embodiment of the present application.
具体实施方式detailed description
为了使本申请的技术方案及优点更加清楚明白，以下结合附图对本申请的示例性实施例进行进一步详细的说明，显然，所描述的实施例仅是本申请的一部分实施例，而不是所有实施例的穷举。并且在不冲突的情况下，本说明书中的实施例及实施例中的特征可以互相结合。The exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings, in which the embodiments described are only a part of the embodiments of the present application, but not all embodiments. An exhaustive example. And in the case of no conflict, the embodiments in the present specification and the features in the embodiments can be combined with each other.
图2为本申请实施例中的射频前端电路的结构示意图，如图2所示，该射频前端电路可以包括：2 is a schematic structural diagram of a radio frequency front end circuit according to an embodiment of the present application. As shown in FIG. 2, the radio frequency front end circuit may include:
主天线；Main antenna
副天线，所述副天线覆盖第一工作频率，与多工器连接；所述第一工作频率包括一个或多个频段中的频点对应的频率；a secondary antenna, the secondary antenna covers a first operating frequency, and is coupled to the multiplexer; the first operating frequency includes a frequency corresponding to a frequency point in one or more frequency bands;
所述多工器用于将来自所述副天线信号传输至收发器，或者，将来自所述收发器的信号传输至所述副天线。The multiplexer is configured to transmit a signal from the secondary antenna to a transceiver or to transmit a signal from the transceiver to the secondary antenna.
具体实施中，由于不同频率的信号因引入元器件而导致的***损耗有所不同，通常，频率越高***损耗会越大。因此，本申请实施例中提出的 种射频前端电路，将对***损耗敏感的频率由副天线来进行接收或发送，且副天线仅通过一个多工器与收发器连接，与现有的天线经过双讯器和天线开关连接至收发器不同，少了天线开关的元器件，因此，可以有效降低***损耗，提高收发性能。In the specific implementation, since the insertion loss of the signals of different frequencies is different due to the introduction of components, generally, the higher the frequency, the greater the insertion loss. Therefore, the method proposed in the embodiment of the present application The RF front-end circuit receives or transmits the frequency sensitive to the insertion loss by the secondary antenna, and the secondary antenna is connected to the transceiver through only one multiplexer, and is connected to the existing antenna through the duplexer and the antenna switch. Different devices reduce the components of the antenna switch, so the insertion loss can be effectively reduced and the transmission and reception performance can be improved.
其中，每个副天线可以覆盖一个或多个频段的多个频点，副天线具体覆盖的频率范围及副天线的数量可以根据实际需要确定。多工器将不同频段或频点的信号连接至收发器相应的通道。Each of the secondary antennas may cover multiple frequency points of one or more frequency bands, and the frequency range specifically covered by the secondary antennas and the number of secondary antennas may be determined according to actual needs. The multiplexer connects signals of different frequency bands or frequencies to the corresponding channels of the transceiver.
本申请实施例提供了一种射频前端电路，通过副天线加多工器进行第一工作频率的信号的接收或发送，没有经过天线开关，可以有效减少对所述第一工作频率信号的插损，提高通信设备的收发性能。The embodiment of the present application provides a radio frequency front-end circuit, which receives or transmits a signal of a first working frequency through a sub-antenna plus a multiplexer, and can effectively reduce insertion loss of the first working frequency signal without passing through an antenna switch. Improve the transceiver performance of communication devices.
实施中，所述主天线可以覆盖第二工作频率；所述第二工作频率中不包括所述第一工作频率。In implementation, the primary antenna may cover a second operating frequency; the first operating frequency is not included in the second operating frequency.
具体实施中，由于副天线已经覆盖了第一工作频率，所以，主天线覆盖的第二工作频率中可以不包括第一工作频率。In a specific implementation, since the secondary antenna has covered the first working frequency, the first working frequency may not be included in the second working frequency covered by the primary antenna.
实施中，所述主天线可以与双讯器连接，所述双讯器用于将来自所述主天线的信号经由主天线开关传输至所述收发器，或者，将来自所述收发器的信号经由所述主天线开关传输至所述主天线。In an implementation, the main antenna may be connected to a dual transmitter for transmitting a signal from the main antenna to the transceiver via a main antenna switch, or transmitting a signal from the transceiver via The main antenna switch is transmitted to the main antenna.
具体实施中，覆盖第二工作频率的主天线可以采用现有的前端电路设计方案，将所述主天线经由双讯器与收发器相连。In a specific implementation, the main antenna covering the second working frequency may adopt an existing front-end circuit design, and the main antenna is connected to the transceiver via a duplexer.
实施中，所述副天线可以为多个。In implementation, the number of the secondary antennas may be multiple.
具体实施中，若所述射频前端电路的工作频率中包括多个对***损耗较为敏感的频段时，可以采用多个副天线来覆盖这些对***损耗敏感的频段。副天线具体覆盖的频率范围及副天线的数量可以根据实际需要确定，这里不做具体限定。In a specific implementation, if the operating frequency of the RF front-end circuit includes multiple frequency bands that are sensitive to insertion loss, multiple secondary antennas may be used to cover these insertion loss-sensitive frequency bands. The frequency range covered by the secondary antenna and the number of the secondary antennas may be determined according to actual needs, and are not specifically limited herein.
实施中，所述第一工作频率可以包括：频段Band1，Band2，Band3， Band4，Band7，Band38，Band39，Band40，Band41中的任意一个或多个频段中的多个频点。In implementation, the first working frequency may include: Bands Band1, Band2, Band3, Multiple frequency points in any one or more of Band4, Band7, Band38, Band39, Band40, Band41.
具体实施中，目前通信设备覆盖的频段越来越多，射频电路设计时，需要设置更多的元器件满足设计要求，会使射频前端设计更复杂，从而导致***损耗增加，影响设备的射频性能，尤其对一些频率高的频段影响更为严重，比如频段B1(上行频率为：1920～1980MHz，下行频率为：2110～2170MHz)，B2(上行频率为：1850～1910MHz，下行频率为：1930～1990MHz)，B3(上行频率为：1710～1785MHz，下行频率为：1805～1880MHz)，B4(上行频率为：1710～1755MHz，下行频率为：2110～2155MHz)，B7(上行频率为：2500～2570MHz，下行频率为：2620～2690MHz)，B38(频率为：2570～2620MHz)，B39(频率为：1880～1920MHz)，B40(频率为：2300～2400MHz)，B41(频率为：2496～2690MHz)，这些频段的接收(对应下行频率为)频率和发射频率(对应上行频率)都是在1700MHz到2700MHz之间，如果前端射频器件越多，这些频段的前端***损耗就会更大，噪声系数会变差，因此可以考虑把这些频段中的一个或多个频段的天线设计从主天线里面分离出来，用副天线来实现，从而提高设备的收发性能。In the specific implementation, there are more and more frequency bands covered by communication devices at present. When designing the RF circuit, more components need to be set to meet the design requirements, which will make the RF front-end design more complicated, resulting in increased insertion loss and affecting the RF performance of the device. Especially for some frequency bands with high frequency, such as frequency band B1 (upstream frequency: 1920~1980MHz, downlink frequency: 2110~2170MHz), B2 (uplink frequency: 1850~1910MHz, downlink frequency: 1930~) 1990MHz), B3 (upstream frequency: 1710 ~ 1785MHz, downlink frequency: 1805 ~ 1880MHz), B4 (upstream frequency: 1710 ~ 1755MHz, downlink frequency: 2110 ~ 2155MHz), B7 (upstream frequency: 2500 ~ 2570MHz) , downlink frequency is: 2620 ~ 2690MHz), B38 (frequency: 2570 ~ 2620MHz), B39 (frequency: 1880 ~ 1920MHz), B40 (frequency: 2300 ~ 2400MHz), B41 (frequency: 2496 ~ 2690MHz), The frequency of these bands (corresponding to the downlink frequency) and the transmission frequency (corresponding to the uplink frequency) are between 1700MHz and 2700MHz. If there are more front-end RF devices, the front-end insertion loss of these bands Will be greater, noise figure deteriorates, it is possible to consider a plurality of these frequency bands or bands separate from the main antenna design antenna inside out, implemented with the sub antenna, thereby improving the performance of the transceiver device.
具体实施中，也可以用副天线来实现上述频率之外的频率的收发。In a specific implementation, the sub-antenna may be used to transmit and receive frequencies other than the above frequencies.
实施中，所述第一工作频率可以包括：Band1，Band2，Band3，Band4，Band7，Band38，Band39，Band40，Band41中的任意两个频段中的多个频点对应的频率。In an implementation, the first working frequency may include: a frequency corresponding to multiple frequency points in any two frequency bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, and Band41.
具体实施中，可以将Band1，Band2，Band3，Band4，Band7，Band38，Band39，Band40，Band41中的任意两个频段用一个副天线来实现覆盖，比如B1+B3、B2+B4、B7+B41、B39+B41，等等。In the specific implementation, any two frequency bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, and Band41 can be covered by one sub-antenna, such as B1+B3, B2+B4, B7+B41, B39+B41, and so on.
图3为本申请实施例中的射频前端电路实施例的结构示意图，如图3所示，B2和B4的频率由副天线来覆盖，经由多工器与收发器连接。该设 备支持的频率除B2和B4之外的频率，即，第二工作频率，采用现有的设计方案，由主天线来覆盖。FIG. 3 is a schematic structural diagram of an embodiment of a radio frequency front end circuit according to an embodiment of the present application. As shown in FIG. 3, frequencies of B2 and B4 are covered by a sub antenna, and are connected to a transceiver via a multiplexer. This setting The frequency of the supported frequencies other than B2 and B4, that is, the second operating frequency, is covered by the main antenna using the existing design.
实施中，所述多工器可以为四工器。In implementation, the multiplexer can be a quadruple.
具体实施中，四工器将四个滤波器合并，共用一个节点。四工器的通带加载和隔离目标与双工器相同。四工器允许两个频带同时连接到天线，这对于载波聚合等应用非常有用。在载波聚合中，一个通信设备可能需要同时接收两个频带。In a specific implementation, the quadruple combines four filters to share one node. The duplexer's passband loading and isolation targets are the same as the duplexer. The quadruplexer allows two bands to be connected to the antenna at the same time, which is very useful for applications such as carrier aggregation. In carrier aggregation, one communication device may need to receive two frequency bands simultaneously.
当采用副天线实现Band1，Band2，Band3，Band4，Band7，Band38，Band39，Band40，Band41中的任意两个频段时，覆盖两个频带的副天线(图3中称为小天线)经由四工器与收发器连接。When the secondary antenna is used to implement any two bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, Band41, the secondary antenna covering the two frequency bands (referred to as small antenna in FIG. 3) is passed through the four-worker. Connect to the transceiver.
实施中，当所述第一工作频率包括三个以上频段中的多个频点时，所述电路，还可以包括：In an implementation, when the first operating frequency includes a plurality of frequency points of the three or more frequency bands, the circuit may further include:
同轴开关，所述同轴开关分别与副天线和多工器连接；a coaxial switch, the coaxial switch being respectively connected to the secondary antenna and the multiplexer;
所述副天线经过所述同轴开关及所述多工器连接至收发器。The secondary antenna is coupled to the transceiver via the coaxial switch and the multiplexer.
具体实施中，当副天线覆盖三个以上频段时，需要同轴开关进行切换。例如当副天线覆盖四个频段时，可以经过一个单刀双掷开关切换后，分别连接至一个四工器。In a specific implementation, when the secondary antenna covers more than three frequency bands, a coaxial switch is required to switch. For example, when the secondary antenna covers four frequency bands, it can be switched to a four-worker after switching through a single-pole double-throw switch.
实施中，所述副天线经过所述同轴开关及所述多工器连接至收发器可以具体包括：In an implementation, the connecting the antenna to the transceiver through the coaxial switch and the multiplexer may specifically include:
所述同轴开关根据来自所述副天线的信号频率及开关控制逻辑切换至相应的多工器的第一通路，经由所述第一通路将来所述来自所述副天线的信号传输至收发器，或者，根据来自收发器的信号频率及开关控制逻辑切换至相应多工器的第二通路，经由所述第二通路将所述来自收发器的信号传输至所述副天线。The coaxial switch switches to a first path of a corresponding multiplexer according to a signal frequency and a switch control logic from the secondary antenna, and the signal from the secondary antenna is transmitted to the transceiver via the first path Or, switching to the second path of the corresponding multiplexer according to the signal frequency from the transceiver and the switch control logic, and transmitting the signal from the transceiver to the secondary antenna via the second path.
具体实施中，当副天线覆盖三个以上频段时，可以通过同轴开关将来 自副天线的信号或来自收发器的信号切换至相应的多工器的相应通路。下面举例说明，若副天线覆盖Band1、Band2、Band3和Band4时，所述射频前端电路中可以包括两个四工器，四工器1的工作频率覆盖Band1和Band3，四工器2的工作频率覆盖Band2和Band4。若来自副天线的信号频率fa属于Band4的频率范围，则根据信号频率fa及开关控制逻辑，同轴开关将切换至四工器2中Band4信号接收通路，并经过所述Band4信号接收通路传输所述来自副天线的信号至收发器。In a specific implementation, when the secondary antenna covers more than three frequency bands, the signal from the secondary antenna or the signal from the transceiver can be switched to the corresponding path of the corresponding multiplexer through the coaxial switch. The following example shows that if the secondary antenna covers Band1, Band2, Band3, and Band4, the RF front-end circuit can include two quad-workers, and the working frequency of the quad-worker 1 covers Band1 and Band3, and the operating frequency of the quad-worker 2 Cover Band2 and Band4. If the signal frequency f a from the secondary antenna belongs to the frequency range of Band 4, according to the signal frequency f a and the switch control logic, the coaxial switch will switch to the Band 4 signal receiving path of the duplexer 2 and pass through the Band 4 signal receiving path. The signal from the secondary antenna is transmitted to the transceiver.
若来自收发器的信号频率ftr属于Band1的频率范围，则根据信号频率ftr及开关控制逻辑，同轴开关将切换至四工器1中Band1信号发送通路，并经过所述Band1信号发送通路将来自收发器的信号经由同轴开关传输至副天线。If the signal frequency f tr from the transceiver belongs to the frequency range of Band1, according to the signal frequency f tr and the switch control logic, the coaxial switch will switch to the Band1 signal transmission path in the duplexer 1 and pass through the Band1 signal transmission path. The signal from the transceiver is transmitted to the secondary antenna via a coaxial switch.
基于同一申请构思，本申请实施例在提出上述射频前端电路的基础上，还提供了一种终端。Based on the same application concept, the embodiment of the present application provides a terminal based on the above RF front-end circuit.
该终端可以包括：上述的射频前端电路。The terminal may include: the radio frequency front end circuit described above.
本申请实施例提供的终端，由于包括了上述射频前端电路，第一工作频率的信号的接收或发送仅通过副天线和多工器，而不经过天线开关，可以有效减少对所述第一工作频率信号的插损，提高通信设备的收发性能。The terminal provided by the embodiment of the present application, because the radio frequency front end circuit is included, the receiving or transmitting of the signal of the first working frequency is only through the sub antenna and the multiplexer, and does not pass through the antenna switch, thereby effectively reducing the first work. The insertion loss of the frequency signal improves the transceiving performance of the communication device.
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。 It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (11)

  1. 一种射频前端电路，其特征在于，包括：An RF front-end circuit, comprising:
    主天线；Main antenna
    副天线，所述副天线覆盖第一工作频率，与多工器连接；所述第一工作频率包括一个或多个频段中的频点对应的频率；a secondary antenna, the secondary antenna covers a first operating frequency, and is coupled to the multiplexer; the first operating frequency includes a frequency corresponding to a frequency point in one or more frequency bands;
    所述多工器用于将来自所述副天线信号传输至收发器，或者，将来自所述收发器的信号传输至所述副天线。The multiplexer is configured to transmit a signal from the secondary antenna to a transceiver or to transmit a signal from the transceiver to the secondary antenna.
  2. 如权利要求1所述的电路，其特征在于，所述主天线覆盖第二工作频率；所述第二工作频率中不包括所述第一工作频率。The circuit of claim 1 wherein said primary antenna covers a second operating frequency; said first operating frequency is not included in said second operating frequency.
  3. 如权利要求2所述的电路，其特征在于，所述主天线与双讯器连接，所述双讯器用于将来自所述主天线的信号经由主天线开关传输至所述收发器，或者，将来自所述收发器的信号经由所述主天线开关传输至所述主天线。The circuit according to claim 2, wherein said main antenna is connected to a duplexer, and said diplexer is configured to transmit a signal from said main antenna to said transceiver via a main antenna switch, or A signal from the transceiver is transmitted to the primary antenna via the primary antenna switch.
  4. 如权利要求1所述的电路，其特征在于，所述副天线为多个。The circuit of claim 1 wherein said plurality of secondary antennas are plurality.
  5. 如权利要求1所述的电路，其特征在于，所述第一工作频率为对***损耗敏感的频率。The circuit of claim 1 wherein said first operating frequency is a frequency that is sensitive to insertion loss.
  6. 如权利要求1或5所述的电路，其特征在于，所述第一工作频率包括：频段Band1，Band2，Band3，Band4，Band7，Band38，Band39，Band40，Band41中的任意一个或多个频段中的多个频点对应的频率。The circuit according to claim 1 or 5, wherein the first operating frequency comprises: any one or more of the frequency bands Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, Band41 The frequency corresponding to multiple frequency points.
  7. 如权利要求1或5所述的电路，其特征在于，所述第一工作频率包括：Band1，Band2，Band3，Band4，Band7，Band38，Band39，Band40，Band41中的任意两个频段中的多个频点对应的频率。The circuit according to claim 1 or 5, wherein the first operating frequency comprises: any one of any two bands in Band1, Band2, Band3, Band4, Band7, Band38, Band39, Band40, Band41 The frequency corresponding to the frequency point.
  8. 如权利要求1或7所述的电路，其特征在于，所述多工器为四工器。A circuit according to claim 1 or 7, wherein said multiplexer is a quadruple.
  9. 如权利要求1所述的电路，其特征在于，当所述第一工作频率包括三个以上频段中的多个频点时，所述电路，还包括： The circuit of claim 1, wherein when the first operating frequency comprises a plurality of frequency points of three or more frequency bands, the circuit further comprises:
    同轴开关，所述同轴开关分别与所述副天线和所述多工器连接；a coaxial switch, wherein the coaxial switch is respectively connected to the secondary antenna and the multiplexer;
    所述副天线经过所述同轴开关及所述多工器连接至收发器。The secondary antenna is coupled to the transceiver via the coaxial switch and the multiplexer.
  10. 如权利要求9所述的电路，其特征在于，所述副天线经过所述同轴开关及所述多工器连接至收发器具体包括：The circuit of claim 9, wherein the connecting the antenna to the transceiver via the coaxial switch and the multiplexer comprises:
    所述同轴开关根据来自所述副天线的信号频率及开关控制逻辑切换至相应的多工器的第一通路，经由所述第一通路将来自所述副天线的信号传输至收发器，或者，根据来自收发器的信号频率及开关控制逻辑切换至相应多工器的第二通路，经由所述第二通路将所述来自收发器的信号传输至所述副天线。The coaxial switch switches to a first path of a corresponding multiplexer according to a signal frequency and switch control logic from the secondary antenna, and transmits a signal from the secondary antenna to the transceiver via the first path, or And switching the signal from the transceiver to the secondary antenna via the second path according to a signal frequency from the transceiver and a switch control logic switching to a second path of the corresponding multiplexer.
  11. 一种终端，其特征在于，包括：如权利要求1至10任一所示的射频前端电路。 A terminal comprising: the radio frequency front end circuit as claimed in any one of claims 1 to 10.
PCT/CN2016/106351 2016-01-14 2016-11-18 Radio frequency front-end circuit and terminal WO2017121184A1 (en)

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