WO2012079309A1 - 四频段gsm收发装置及无线终端 - Google Patents

四频段gsm收发装置及无线终端 Download PDF

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Publication number
WO2012079309A1
WO2012079309A1 PCT/CN2011/071463 CN2011071463W WO2012079309A1 WO 2012079309 A1 WO2012079309 A1 WO 2012079309A1 CN 2011071463 W CN2011071463 W CN 2011071463W WO 2012079309 A1 WO2012079309 A1 WO 2012079309A1
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WO
WIPO (PCT)
Prior art keywords
frequency
band
radio frequency
filter
transceiver
Prior art date
Application number
PCT/CN2011/071463
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English (en)
French (fr)
Inventor
于娟
葛虎
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012079309A1 publication Critical patent/WO2012079309A1/zh

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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
    • H04B1/006—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 switches for selecting the desired band

Definitions

  • the present invention relates to communication or, in particular, to a quad-band global mobile communication.
  • GSM Global system for Mobile Communication
  • GSM Global system for Mobile Communication
  • the relatively low-end mobile phones are basically GSM dual-band mobile phones, which is due to the current design of GSM quad-band mobile phones. Higher cost.
  • a quad-band GSM mobile phone requires a single-pole six-four Zheng antenna switch, a quad-band transmit function and port RF power amplifier (PA), and a surface acoustic wave (SAW) filter in each of the four frequency bands.
  • PA quad-band transmit function and port RF power amplifier
  • SAW surface acoustic wave
  • FIG. 1 is a structural diagram of hardware design of a four-band transmitter and receiver in the related art.
  • FIG. 2 is a diagram showing the relationship between the general four-band transmission and receiver logic control configuration shown in FIG. 1.
  • the transmitter has two transmit lines and four receive lines, so that the antenna switch is a single-pole six-throw, and there are six states required, that is, the antenna switch has six logic states.
  • the receiver also needs four sets of differential pairs to complete the reception of four frequency bands. Therefore, it can be concluded that according to the scheme of Figure 1, the antenna switch will have many states, and the transmitter and receiver will have many pins, which will not only increase the cost of the transmitter and receiver hardware, but also because Many pins and traces that are transmitted and received cause difficulty in layout routing.
  • the utility model provides a quad-band GSM transceiver and a wireless terminal, and the utility model provides a quad-band GSM transmitter and receiver with a large number of pins, which causes difficulty in layout routing and an increase in hardware cost. Solve at least one of the above problems. According to an aspect of the present invention, a four-band GSM transceiver is provided.
  • the quad-band GSM transceiver includes: an antenna, the transceiver further includes: a dual-frequency antenna switch, respectively connected to the antenna and two RF integrated devices; two RF integrated devices, the input ends of which are respectively connected in the double The two antenna receiving channels corresponding to the frequency antenna switch, wherein each of the RF integrated devices is a device integrating a single-pole double-throw switch and a filter corresponding to two frequency bands; and an RF transceiver chip having two receiving channels, wherein Each receive channel is coupled to an output of a radio frequency integrated device.
  • the above RF integrated device comprises: a single pole double throw switch connected to a receiving frequency band channel corresponding to the dual frequency antenna switch; a first single frequency surface acoustic wave (SAW) filter, the input end thereof and the single pole double throw switch One end is connected; the second single-band SAW filter has an input end connected to the second end of the single-pole double 4 Zheng switch.
  • the above RF integrated device comprises: a single pole double throw switch connected to a receiving band channel corresponding to the dual frequency antenna switch; a dual band SAW filter whose input end is connected with the single pole double throw switch.
  • the filter corresponding to the two frequency bands in one RF integrated device is a high frequency band filter, wherein the frequency band corresponding to the high frequency band filter is higher than a predetermined threshold; and the filter corresponding to the two frequency bands in the other RF integrated device is a low frequency band a filter, wherein a frequency band corresponding to the low frequency band filter is lower than a predetermined threshold.
  • the radio frequency transceiver chip includes: a low frequency LNA and a high frequency LNA; the high frequency band filter is connected to the high frequency LNA through a receiving channel of the radio frequency transceiver chip; the low band filter is connected to the low frequency LNA through another receiving channel of the radio frequency transceiver chip.
  • the frequency bands corresponding to the above high frequency band filter are GSM 1800 frequency band and GSM 1900 frequency band; the frequency bands corresponding to the low frequency band filter are GSM 850 frequency band and GSM 900 frequency band.
  • the transceiver device further includes: a radio frequency power amplifier located on a transmitting channel between the dual-frequency antenna switch and the radio frequency transceiver chip; the dual-frequency antenna switch and the radio frequency power amplifier are integrated in one radio frequency transmitting module.
  • the above antenna is a passive device having a four-frequency transceiving function.
  • the present invention also provides a wireless terminal.
  • the wireless terminal according to the present invention includes any of the aforementioned four-band GSM transceivers.
  • FIG. 1 is a hardware design architecture diagram of a four-band transmission and receiver in the related art
  • FIG. 2 is a diagram showing a relationship between a four-band transmission and receiver logic control configuration shown in FIG. 1;
  • FIG. 2 is a diagram showing a relationship between a four-band transmission and receiver logic control configuration shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of a radio frequency integrated device integrated with a high frequency band filter according to a preferred embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a radio frequency integrated device integrated with a high frequency band filter according to a preferred embodiment of the present invention
  • FIG. 6 is a schematic diagram of a logical control configuration of a quad-band GSM transceiver according to a preferred embodiment of the present invention.
  • a four-band GSM transceiver is provided.
  • 3 is a hardware design architecture diagram of a four-band GSM transceiver device according to an embodiment of the present invention.
  • the four-band GSM transceiver includes, in addition to the antenna 1, a dual-frequency antenna switch 3, two radio frequency integrated devices 4 and 5, and a radio frequency transceiver chip 6 having two receiving channels.
  • the dual-frequency antenna switch 3 is respectively connected to the antenna 1 and the two RF integrated devices 4 and 5, wherein each of the RF integrated devices is a device integrating a single-pole double-throw switch and a filter corresponding to two frequency bands;
  • the RF integrated devices 4 and 5 have their input terminals respectively connected to the two receiving frequency band channels corresponding to the dual frequency antenna switch;
  • the RF transceiver chip 6 having two receiving channels, wherein each receiving channel is respectively associated with a radio frequency integrated device The outputs are connected.
  • a dual-frequency antenna switch for example, a single-pole four-throw switch
  • two single-pole double-throw switches are used to select a suitable filter to implement a GSM quad-band scheme
  • the related art has been solved in the related art.
  • the antenna may be a passive device with a quad-frequency transceiver function.
  • the above-mentioned four-band GSM transceiver device may further include: a radio frequency power amplifier located on a transmission channel between the dual-frequency antenna switch 3 and the radio frequency transceiver chip 2, in the specific implementation process, the dual-frequency antenna switch 3 and the radio frequency power amplifier 2 can be integrated into one RF transmitter module, or it can be laid out independently.
  • the components integrated in the radio frequency integrated device include but are not limited to: a single pole double throw switch connected to a receiving frequency band channel corresponding to the dual frequency antenna switch; the first single frequency band SAW filter, the input end thereof and the single knife The first end of the double throw switch is connected; the second single frequency SAW filter has an input end connected to the second end of the single pole double throw switch.
  • the components integrated in the radio frequency integrated device include but are not limited to: a single pole double throw switch connected to a receiving band channel corresponding to the dual frequency antenna switch; a dual band SAW filter, the input end and the single pole double The throw switch is connected.
  • the above two integration methods of the RF integrated device are provided.
  • a single-pole double-throw switch and two single-band SAW filters can usually be integrated into the above RF integrated device. It is also possible to integrate a single pole double throw switch and a dual band SAW filter into the above RF integrated device. The switching of the single-pole double-throw switch allows the filter to switch between the two bands.
  • the two frequency bands described above may be set to one of the high frequency bands and the other to the low frequency bands. That is, the filter corresponding to the two frequency bands in one of the two radio frequency integrated devices may be set as a high frequency band filter, wherein the frequency band corresponding to the high frequency band filter is higher than a predetermined threshold; the above two radio frequency integration
  • the filter corresponding to the two frequency bands in another RF integrated device in the device may be a low band filter, wherein the frequency band corresponding to the low band filter is lower than a predetermined threshold.
  • the frequency bands corresponding to the high-band filter are usually GSM 1800 band and GSM 1900 band. For details, see Figure 4.
  • the frequency bands corresponding to the above-mentioned band filter are usually GSM 850 band and GSM 900 band, as shown in FIG. 5 .
  • Figure 4 depicts the RF integrated device with the high-band filter integrated as shown in Figure 3.
  • the device integrates a dual-frequency SAW filter with switch selection.
  • the device consists of a single-pole, double-throw switch.
  • the GSM1800/GSM1900 two-band common SAW filter chip and the matching circuit with its differential output are composed of three parts, and the electrical characteristics should also meet the previous basic frequency response limit requirements.
  • Figure 5 depicts the RF integrated device with integrated low-band filter as shown in Figure 3.
  • the dual-frequency SAW filter with switch is selected by a single-pole, double-throw switch, GSM850/GSM900 for two-band common SAW filtering.
  • the chip and the matching circuit combining its differential output are composed of three parts, and the electrical characteristics should meet the requirements of the previous basic frequency response.
  • the radio frequency transceiver chip includes, but is not limited to: a low frequency LNA and a high frequency LNA; wherein the high frequency band filter can be connected to the high frequency LNA through a receiving channel of the radio frequency transceiver chip; the low frequency band filter passes the radio frequency transceiver chip. The other receiving channel is connected to the low frequency LNA.
  • a single-pole double-throw switch can be added to the frequency-frequency receiving channel to select GSM850 and GSM900 to enter different SAW filters, and their differential output channels are combined and then enter the RF transceiver chip low-frequency LNA.
  • FIG. 6 is a logic control configuration diagram of a four-band GSM transceiver according to an example of the present invention.
  • the four-band GSM transceiver includes, in addition to the antenna 1 and the radio frequency power amplifier (PA) 2, a single-pole four-throw dual-frequency antenna switch 3, two radio frequency integrated devices 4 and 5, and A radio frequency transceiver chip 6 having two receiving channels.
  • PA radio frequency power amplifier
  • the single-pole four-throw dual-frequency antenna switch 3 is respectively connected with an antenna, an RF power amplifier and two RF integrated devices; two RF integrated devices 4 and 5, whose input ends are respectively connected to two receiving bands corresponding to the dual-frequency antenna switch
  • the first RF integrated device 4 is a device integrating a single-pole double-throw switch and two single-frequency filters (GSM850 filter and GSM900 filter)
  • the second RF integrated device 5 is integrated with one Single-pole dual 4 Zheng switch and two single-frequency filters (GSM 1800 filter and GSM 1900 filter).
  • the single-pole double-four-turn switch is integrated in the front end of the single-frequency filter.
  • the RF transceiver chip with two receiving channels 6 , wherein each receiving channel is respectively connected to an output end of a radio frequency integrated device.
  • the transmitting channel of the RF transceiver chip is connected to the PA 2, and the RF transceiver chip sends the signal through the PA and the antenna.
  • the frequency band can be selected.
  • the single-pole double-throw switch in the RF integrated device on the low-frequency receiving channel selects GSM850 and GSM900 to enter different SAW filters in the RF integrated device, and their differential output channels are combined and enter the RF transceiver chip low-frequency LNA.
  • Perform the next step single-pole double-throw switch in the RF integrated device on the high-frequency receiving channel, select GSM1800 and GSM1900, and enter different SAW filters in the RF integrated device. Their differential output channels are combined and then input into the RF transceiver.
  • the chip high frequency LNA is processed in the next step.
  • a wireless terminal including but not limited to the above-described four-band GSM transceiver.
  • the four-band GSM transceiver can be referred to the description of FIG. 3 to FIG. 6, and is not mentioned here.
  • the GSM quad-band scheme can be implemented relatively easily by using the new radio frequency integrated device in the quad-band GSM transceiver.
  • the new RF integrated device selects the accurate SAW filter receiving channel with appropriate logic control to achieve strict filtering before entering the RF transceiver chip, ensuring that the receiving performance of the terminal meets the design requirements.
  • layout and routing are also simplified, and valuable space is gained for increasing integration requirements.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed among multiple computing devices. On the network, optionally, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention.
  • various modifications and changes can be made in the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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

Abstract

本实用新型公开了一种四频段GSM收发装置及无线终端，该GSM收发装置包括：天线，其中，该收发装置还包括：双频天线开关，分别与天线和两个射频集成器件相连接；两个射频集成器件，其输入端分别连接在双频天线开关对应的两个接收频段通道上，其中，每个射频集成器件为集成了单刀双掷开关和对应于两个频段的滤波器的器件；具有两个接收通道的射频收发芯片，其中，每个接收通道分别与一个射频集成器件的输出端相连接。根据本实用新型提供的技术方案，可以降低布局走线的困难，最大程度地降低四频GSM方案的硬件成本。

Description

四频段 GSM 4 装置及无线终端 技术领域 本实用新型涉及通信领 i或， 具体而言， 涉及一种四频段全球移动通信
( Global system for Mobile Communication, 简称为 GSM ) 收发装置及无线 终端。 背景技术 由于 GSM手机等终端产品的普及以及低成本的优势， 市场占有率较高， 目前较为常见的低端手机基本都是 GSM双频手机， 这是由于目前进行 GSM 四频手机的设计会带来较高的成本。 目前， 一个四频段 GSM手机需要用到一个单刀六 4郑的天线开关， 一个 具备四频发射功能和端口的射频功率放大器 （ PA ), 在四个频段上分别配一 个声表面波 （SAW ) 滤波器， 最后进入四个接收通道 具体可以参见图 1和图 2。 图 1为相关技术中四频段发射和接收机的硬件设计构架图。 图 2为图 1 所示的普通四频段发射和接收机逻辑控制配置关系图。 从图 2中可以看到， 发射机有两根发射线和四根接收线， 这样天线开关为单刀六掷， 需要有六种 状态， 即天线开关具有六种逻辑状态。 并且接收机也需要四组差分对才能完 成对四个频段的接收。 所以可以有如下的结论， 就是按照图 1的方案， 会造 成天线开关会有很多状态， 发射机和接收机的引脚也会很多， 不但造成发射 机和接收机硬件成本的增加， 而且会因为发射和接收的很多引脚和走线而造 成布局走线的困难。 实用新型内容 针对相关技术中四频 GSM发射机和接收机的引脚较多， 导致布局走线 的困难以及硬件成本增加等问题， 本实用新型提供了一种四频段 GSM收发 装置及无线终端， 以解决上述问题至少之一。 根据本实用新型的一个方面， 提供了一种四频段 GSM收发装置。 根据本实用新型的四频段 GSM收发装置除了包括： 天线， 收发装置还 包括： 双频天线开关， 分别与天线和两个射频集成器件相连接； 两个射频集 成器件， 其输入端分别连接在双频天线开关对应的两个接收频段通道上， 其 中， 每个射频集成器件为集成了单刀双掷开关和对应于两个频段的滤波器的 器件； 具有两个接收通道的射频收发芯片， 其中， 每个接收通道分别与一个 射频集成器件的输出端相连接。 上述射频集成器件包括： 一个单刀双掷开关， 连接在双频天线开关对应 的一个接收频段通道上； 第一单频段声表面波（SAW ) 滤波器， 其输入端与 该单刀双掷开关的第一端相连接； 第二单频段 SAW滤波器， 其输入端与该 单刀双 4郑开关的第二端相连接。 上述射频集成器件包括： 一个单刀双掷开关， 连接在双频天线开关对应 的一个接收频段通道上； 一个双频段 SAW滤波器， 其输入端与该单刀双掷 开关相连接。 一个射频集成器件中对应于两个频段的滤波器为高频段滤波器， 其中， 高频段滤波器对应的频段高于预定阈值； 另一个射频集成器件中对应于两个 频段的滤波器为低频段滤波器， 其中， 低频段滤波器对应的频段低于预定阈 值。 上述射频收发芯片包括： 低频 LNA和高频 LNA; 高频段滤波器通过射 频收发芯片的一个接收通道与高频 LNA相连接； 低频段滤波器通过射频收 发芯片的另一个接收通道与低频 LNA相连接。 上述高频段滤波器对应的频段为 GSM 1800频段和 GSM 1900频段； 低 频段滤波器对应的频段为 GSM 850频段和 GSM 900频段。 上述收发装置还包括： 射频功率放大器， 位于双频天线开关与射频收发 芯片之间的发射通道上； 双频天线开关和射频功率放大器集成于一个射频发 射模块中。 上述天线为具有四频收发功能的无源器件。 才艮据本实用新型的另一方面， 本实用新型还提供了一种无线终端。 才艮据本实用新型的无线终端包括前述的任一种四频段 GSM收发装置。 通过本实用新型， 釆用双频天线开关和射频集成器件选择合适的 SAW 滤波器来实现 GSM四频方案，解决了相关技术中四频 GSM发射机和接收机 的引脚较多， 导致布局走线的困难以及硬件成本增加等问题， 进而可以降低 布局走线的困难， 最大程度地降氏四频 GSM方案的硬件成本。 附图说明 此处所说明的附图用来提供对本实用新型的进一步理解， 构成本申请的 一部分， 本实用新型的示意性实施例及其说明用于解释本实用新型， 并不构 成对本实用新型的不当限定。 在附图中： 图 1为相关技术中四频段发射和接收机的硬件设计构架图； 图 2为图 1所示的四频段发射和接收机逻辑控制配置关系图； 图 3为根据本实用新型实施例的四频段 GSM收发装置的硬件设计构架 图； 图 4为根据本实用新型优选实施例的集成了高频段滤波器的射频集成器 件的结构示意图； 图 5为根据本实用新型优选实施例的集成了低频段滤波器的射频集成器 件的结构示意图； 图 6为根据本实用新型优选实施例的四频段 GSM收发装置的逻辑控制 配置关系图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本实用新型。需要说明的是， 在不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 根据本实用新型实施例， 提供了一种四频段 GSM收发装置。 图 3为根据本实用新型实施例的四频段 GSM收发装置的硬件设计构架 图。 如图 3所示， 该四频段 GSM收发装置除了包括： 天线 1 , 还包括： 双频 天线开关 3、 两个射频集成器件 4和 5、 以及具有两个接收通道的射频收发 芯片 6。 其中， 双频天线开关 3 , 分别与天线 1和两个射频集成器件 4和 5相连接， 其 中， 每个射频集成器件为集成了单刀双掷开关和对应于两个频段的滤波器的 器件； 两个射频集成器件 4和 5 , 其输入端分别连接在双频天线开关对应的两 个接收频段通道上； 具有两个接收通道的射频收发芯片 6 , 其中， 每个接收通道分别与一个 射频集成器件的输出端相连接。 在上述装置中， 釆用一个双频天线开关 （例如， 单刀四掷开关） 和两个 单刀双掷开关选择合适的滤波器来实现 GSM四频方案， 解决了相关技术中 相关技术中四频 GSM发射机和接收机的引脚较多， 导致布局走线的困难以 及硬件成本增加等问题， 进而可以降低布局走线的困难， 最大程度地降低四 频 GSM方案的硬件成本。 其中， 上述天线可以为具有四频收发功能的无源器件。 其中， 上述四频段 GSM收发装置还可以包括： 射频功率放大器， 位于 双频天线开关 3与射频收发芯片 2之间的发射通道上， 在具体实施过程中， 上述双频天线开关 3和射频功率放大器 2可以集成于一个射频发射模块中， 也可以独立布局。 优选地， 上述射频集成器件中集成的元件包括但不限于： 一个单刀双掷开关， 连接在双频天线开关对应的一个接收频段通道上； 第一单频段 SAW滤波器， 其输入端与该单刀双掷开关的第一端相连接； 第二单频段 SAW滤波器， 其输入端与该单刀双掷开关的第二端相连接。 优选地， 上述射频集成器件中集成的元件包括但不限于： 一个单刀双掷开关， 连接在双频天线开关对应的一个接收频段通道上； 一个双频段 SAW滤波器， 其输入端与该单刀双掷开关相连接。 上面提供了射频集成器件的两种集成方式， 在具体实施过程中， 通常可 以将一个单刀双掷开关和两个单频段 SAW滤波器集成上述射频集成器件， 也可以将一个单刀双掷开关和一个双频段 SAW滤波器集成上述射频集成器 件。通过单刀双掷开关的开关切换，可以使滤波器在两个频段之间进行切换。 优选地， 上面描述的两个频段， 可以将一个设置为高频段， 另一个设置 为低频段。 即， 上述两个射频集成器件中一个射频集成器件中对应于两个频段的滤 波器为可以设置为高频段滤波器， 其中， 高频段滤波器对应的频段高于预定 阈值； 上述两个射频集成器件中另一个射频集成器件中对应于两个频段的滤 波器可以为低频段滤波器， 其中， 低频段滤波器对应的频段低于预定阈值。 其中，上述高频段滤波器对应的频段通常为 GSM 1800频段和 GSM 1900 频段， 具体可以参见图 4。 上述氏频段滤波器对应的频段通常为 GSM 850频 段和 GSM 900频段， 具体可以参见图 5。 图 4描述了图 3所示的集成了高频段滤波器的射频集成器件， 该器件集 成了带开关选择的双频 SAW滤波器， 该器件由一个单刀双掷开关，
GSM1800/GSM1900两个频段的普通 SAW滤波器芯片和合并其差分输出的 匹配电路三部分组成 ,其电气特性也应符合之前基本的频率响应的限值要求。 图 5描述了图 3所示的集成了低频段滤波器的射频集成器件， 带开关的 选择的双频 SAW滤波器， 该器件由一个单刀双掷开关， GSM850/GSM900 两个频段的普通 SAW滤波器芯片和合并其差分输出的匹配电路三部分组成， 其电气特性应符合之前基本的频率响应的限值要求。 优选地， 上述射频收发芯片包括但不限于： 低频 LNA和高频 LNA; 其 中， 上述高频段滤波器可以通过射频收发芯片的一个接收通道与高频 LNA 相连接； 低频段滤波器通过射频收发芯片的另一个接收通道与低频 LNA相 连接。 在优选实施过程中， 可以在氏频接收通道上增加一个单刀双掷开关， 进 行 GSM850和 GSM900的选择， 从而进入不同的 SAW滤波器， 他们的差分 输出通道合并后进入射频收发芯片低频 LNA进行下一步处理； 在高频接收 通道上也增加一个单刀双掷开关， 进行 GSM1800和 GSM1900的选择， 从而 进入不同的 SAW滤波器， 他们的差分输出通道合并后进入射频收发芯片高 频 LNA进行下一步处理。 以下结合图 6的示例描述上述优选实施方式。 图 6为根据本实用新型实例的四频段 GSM收发装置的逻辑控制配置关 系图。 如图 6所示， 该四频段 GSM收发装置除了包括： 天线 1和射频功率 放大器 （PA ) 2之外， 还可以包括： 单刀四掷双频天线开关 3、 两个射频集 成器件 4和 5以及具有两个接收通道的射频收发芯片 6。 单刀四掷双频天线开关 3 , 分别与天线、 射频功率放大器和两个射频集 成器件相连接； 两个射频集成器件 4和 5 , 其输入端分别连接在双频天线开关对应的两 个接收频段通道上， 其中， 第一个射频集成器件 4为集成了一个单刀双掷开 关和两个单频滤波器 （ GSM850滤波器和 GSM900滤波器） 的器件， 第二个 射频集成器件 5为集成了一个单刀双 4郑开关和两个单频滤波器 （GSM 1800 滤波器和 GSM 1900滤波器） 的器件。 有图 6可以看出， 单刀双 4郢开关集成 在单频滤波器的前端， 通过这种处理， 便于实现四频的功能需求， 布局走线 更为简化； 具有两个接收通道的射频收发芯片 6 , 其中， 每个接收通道分别与一个 射频集成器件的输出端相连接。 需要注意的是， 如图 6所示， 射频收发芯片的发射通道与 PA 2相连接， 射频收发芯片将信号经由 PA和天线发送出去， 具体可以参见相关技术中的 记载， 此处不再赘述。 进一步地，通过在单刀四掷双频天线开关和射频收发芯片的接收通道上， 增加了两个新型射频集成器件， 可以对频段进行选择。 具体地， 低频接收通 道上射频集成器件中的单刀双掷开关， 进行 GSM850和 GSM900的选择， 从 而进入该射频集成器件中不同的 SAW滤波器， 它们的差分输出通道合并后 进入射频收发芯片低频 LNA进行下一步处理； 高频接收通道上射频集成器 件中的单刀双掷开关， 进行 GSM1800和 GSM1900的选择， 从而进入该射频 集成器件中不同的 SAW滤波器， 他们的差分输出通道合并后进入射频收发 芯片高频 LNA进行下一步处理。 才艮据本实用新型实施例， 还提供了一种无线终端， 该无线终端包括但不 限于上述四频段 GSM收发装置。 其中， 该四频段 GSM收发装置可以参见图 3至图 6的描述， 此处不再赞述。 综上所述， 借助本实用新型提供的上述实施例， 釆用四频段 GSM收发 装置中的新型射频集成器件， 可以较容易地实现 GSM四频方案。 新型射频 集成器件凭借合适的逻辑控制选择准确的 SAW滤波器接收通道， 实现进入 射频收发芯片前的严格滤波处理， 确保终端的接收性能符合设计要求。 在电 路实现方面， 布局、 走线也更为简化， 为日益增加的集成化要求争取了宝贵 的空间。 显然， 本领域的技术人员应该明白， 上述的本实用新型的各模块或各步 骤可以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者 分布在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行 的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤， 或 者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样， 本实用新型不限制于任何特定的硬件 和软件结合。 以上仅为本实用新型的优选实施例而已， 并不用于限制本实用新型， 对 于本领域的技术人员来说， 本实用新型可以有各种更改和变化。 凡在本实用 新型的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在 本实用新型的保护范围之内。

Claims

权 利 要 求 书 一种四频段全球移动通信 GSM收发装置， 包括： 天线， 所述收发装置 还包括：
双频天线开关， 分别与所述天线和两个射频集成器件相连接； 所述两个射频集成器件， 其输入端分别连接在所述双频天线开关 对应的两个接收频段通道上， 其中， 每个所述射频集成器件为集成了 单刀双掷开关和对应于两个频段的滤波器的器件； 具有两个接收通道的射频收发芯片， 其中， 每个接收通道分别与 一个所述射频集成器件的输出端相连接。 根据权利要求 1所述的收发装置， 其中， 所述射频集成器件包括： 一个单刀双扭卩开关， 连接在所述双频天线开关对应的一个接收频 段通道上；
第一单频段声表面波 SAW滤波器，其输入端与该单刀双掷开关的 第一端相连接；
第二单频段 SAW滤波器，其输入端与该单刀双掷开关的第二端相 连接。 根据权利要求 1所述的收发装置， 其中， 所述射频集成器件包括： 一个单刀双扭卩开关， 连接在所述双频天线开关对应的一个接收频 段通道上；
一个双频段 SAW滤波器， 其输入端与该单刀双掷开关相连接。 根据权利要求 1所述的收发装置， 其中，
一个所述射频集成器件中所述对应于两个频段的滤波器为高频段 滤波器， 其中， 所述高频段滤波器对应的频段高于预定阈值；
另一个所述射频集成器件中所述对应于两个频段的滤波器为低频 段滤波器， 其中， 所述低频段滤波器对应的频段低于所述预定阈值。 根据权利要求 4所述的收发装置， 其中， 所述射频收发芯片包括： 低 频 LNA和高频 LNA; 所述高频段滤波器通过所述射频收发芯片的一个接收通道与所述 高频 LNA相连接；
所述低频段滤波器通过所述射频收发芯片的另一个接收通道与所 述氐频 LNA相连接。
6. 根据权利要求 4所述的收发装置， 其中，
所述高频段滤波器对应的频段为 GSM 1800频段和 GSM 1900频 段；
所述低频段滤波器对应的频段为 GSM 850频段和 GSM 900频段。
7. 根据权利要求 1所述的收发装置， 其中，
所述收发装置还包括： 射频功率放大器， 位于所述双频天线开关 与所述射频收发芯片之间的发射通道上；
所述双频天线开关和所述射频功率放大器集成于一个射频发射模 块中。
8. 根据权利要求 1所述的收发装置， 其中， 所述天线为具有四频收发功 能的无源器件。
9. 一种无线终端， 所述无线终端包括如权利要求 1至 8中任一项所述的 四频段 GSM收发装置。
PCT/CN2011/071463 2010-12-17 2011-03-02 四频段gsm收发装置及无线终端 WO2012079309A1 (zh)

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KR101991489B1 (ko) * 2012-09-03 2019-09-30 삼성전자주식회사 무선 통신 회로와 장치 및 그 제어 방법
CN112968710A (zh) * 2019-12-13 2021-06-15 航天信息股份有限公司 一种多频段的射频电路
CN111262597A (zh) * 2020-01-17 2020-06-09 深圳市普威技术有限公司 一种新型射频装置、射频装置控制方法和无线设备
CN111934708B (zh) * 2020-08-04 2022-05-20 西安博瑞集信电子科技有限公司 一种应用于射频收发链路的信号处理模块
CN113055042A (zh) * 2021-03-09 2021-06-29 维沃移动通信有限公司 射频电路和电子设备

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