CN110855315A - 射频架构及移动终端 - Google Patents

射频架构及移动终端 Download PDF

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CN110855315A
CN110855315A CN201911235791.5A CN201911235791A CN110855315A CN 110855315 A CN110855315 A CN 110855315A CN 201911235791 A CN201911235791 A CN 201911235791A CN 110855315 A CN110855315 A CN 110855315A
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radio frequency
gps
duplexer
antenna
architecture
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贾宇
温鼎宁
张华�
陶龙西
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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Priority to CN201911235791.5A priority Critical patent/CN110855315A/zh
Priority to PCT/CN2019/125939 priority patent/WO2021109240A1/zh
Priority to US17/621,756 priority patent/US20220350029A1/en
Publication of CN110855315A publication Critical patent/CN110855315A/zh
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/21Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/38Transceivers, 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
    • H04B1/40Circuits
    • H04B1/401Circuits for selecting or indicating operating mode
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/35Constructional details or hardware or software details of the signal processing chain
    • G01S19/36Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42Determining position
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/005Details 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/005Details 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
    • H04B1/0067Details 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 one or more circuit blocks in common for different bands
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transceivers (AREA)

Abstract

本申请公开了一种射频架构及移动终端。本申请通过单独设置B13双工器的射频通路,使得LTE_B13主波信号由功率放大器输出经过B13双工器后,不经过任何非线性器件,直接由第二主天线发射出去,从而B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合,极大地减小射频通路对GPS通路的干扰。

Description

射频架构及移动终端
技术领域
本申请属于终端领域,尤其涉及一种射频架构及移动终端。
背景技术
现有支持LTE_B13[LTE(Long Term Evolution,长期演进)的band13频段]频段的手机需要实现GPS(global Position System,全球定位系统)功能时,需在射频通路和GPS通路上分别设置独立的天线。此时,LTE_B13主波信号经过功率放大器、双工器、射频模块、开关至主集天线和分集天线发射,GPS天线接收的信息需要经过GPS滤波器进行滤波。
其中,LTE_B13发射频率为777-787MHz,GPS接收信号的中心频率为1572.82MHz。目前的GPS天线和分集天线都设置在手机的上方,而且彼此距离比较短。在LTE_B13频段和GPS同时工作时,GPS的干扰源来自两点:一点是在射频通路上由LTE_B13频段的信号经过射频模块、开关等非线性器件时会产生二次谐波,并且通过分集天线发射出去。由于目前商用的双工器在GPS频段的隔离度较低不能完全滤除二次谐波,这个信号通过GPS天线耦合进入GPS通路中直接造成GPS的干扰;另一点是开关(双刀双掷开关,用于实现上下天线切换)的隔离度大概为25dB。也就是说,当B13双工器以最大功率发射之际,会有大概0dBm的功率经由开关进入分级天线,同时伴随着LTE_B13频段的二次谐波。上述两种情况产生的二次谐波会导致GPS无法定位或无法正确定位。
有鉴于此,本申请提供一种射频架构及移动终端,以降低射频通路对GPS通路的干扰。
发明内容
本申请实施例提供一种射频架构及移动终端,通过单独设置B13双工器的射频通路,使得LTE_B13主波信号由功率放大器输出经过B13双工器后,不经过任何非线性器件,直接由第二主天线发射出去,从而B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合,极大地减小射频通路对GPS通路的干扰。
本申请提供一种射频架构,包括:一GPS通路;一第一射频通路,包括依次连接的功率放大器、第一双工器、射频模块和开关以及均与所述开关相连的第一主天线和分集天线;以及一第二射频通路,包括依次连接的所述功率放大器、第二双工器、滤波器以及第二主天线。
进一步地,所述GPS通路包括GPS天线以及GPS滤波器。
进一步地,所述GPS滤波器为高通滤波器。
进一步地,所述开关为双刀双掷开关。
进一步地,所述开关为非线性器件。
进一步地,所述射频模块为非线性器件。
进一步地,所述滤波器为低通滤波器。
进一步地,所述第二双工器为B13双工器。
进一步地,所述第二双工器发射频率的2倍为GPS频段。
根据本申请的另一方面,本申请提供一种移动终端,包括任一上述的射频架构。
本申请实施例提供一种射频架构及移动终端,通过单独设置B13双工器的射频通路,使得LTE_B13主波信号由功率放大器输出经过B13双工器后,不经过任何非线性器件,直接由第二主天线发射出去,从而B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合,极大地减小射频通路对GPS通路的干扰。
附图说明
下面结合附图,通过对本申请的具体实施方式详细描述,将使本申请的技术方案及其有益效果显而易见。
图1是本申请实施例提供的一种射频架构的结构示意图。
图2是本申请实施例提供的一种移动终端的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书以及上述附图中的术语“第一”、“第二”、“第三”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应当理解,这样描述的对象在适当情况下可以互换。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含。
在具体实施方式中,下文论述的附图以及用来描述本申请公开的原理的各实施例仅用于说明,而不应解释为限制本申请公开的范围。所属领域的技术人员将理解,本申请的原理可在任何适当布置的系统中实施。将详细说明示例性实施方式,在附图中示出了这些实施方式的实例。此外,将参考附图详细描述根据示例性实施例的终端。附图中的相同附图标号指代相同的元件。
本具体实施方式中使用的术语仅用来描述特定实施方式,而并不意图显示本申请的概念。除非上下文中有明确不同的意义,否则,以单数形式使用的表达涵盖复数形式的表达。在本申请说明书中,应理解,诸如“包括”、“具有”以及“含有”等术语意图说明存在本申请说明书中揭示的特征、数字、步骤、动作或其组合的可能性,而并不意图排除可存在或可添加一个或多个其他特征、数字、步骤、动作或其组合的可能性。附图中的相同参考标号指代相同部分。
如图1所示,本申请提供一种射频架构,包括GPS通路10、GPS天线110、GPS滤波器120、第一射频通路20、功率放大器210、第一双工器220、射频模块230、开关240、第一主天线250、分集天线260、第二射频通路30、第二双工器310、滤波器320以及第二主天线330。
在本申请实施例中,GPS通路10可以包括GPS天线110和GPS滤波器120。
其中,GPS天线110用于接受GPS信号。GPS信号的中心频率为1572.82MHz。
在本申请实施例中,GPS滤波器120为高通滤波器。高通滤波器,又称低截止滤波器、低阻滤波器,允许高于某一截频的频率通过,而大大衰减较低频率的一种滤波器。高通滤波器能够去掉信号中不必要的低频成分,或者说去掉低频干扰。
在本申请实施例中,第一射频通路20包括依次连接的功率放大器210、第一双工器220、射频模块230和开关240以及均与开关240相连的第一主天线250和分集天线260。
功率放大器210是指在给定失真率条件下,能产生最大功率输出以驱动某一负载的放大器。
第一双工器220包括但不限于B2双工器或B25双工器。其中双工器的作用是将发射和接收讯号相隔离,保证接收和发射都能同时正常工作。
射频模块230用于传输模拟和数字信号。射频模块230为非线性器件。
在本申请实施例中,开关240为双刀双掷开关,用于实现第一主天线250和分集天线260的切换。具体地,开关240为非线性器件。
在本申请实施例中,第二射频通路30包括依次连接的功率放大器210、第二双工器310、滤波器320以及第二主天线330。
第二双工器310可以为B13双工器。第二双工器310的发射频率为777-787MHz。第二双工器310发射频率的2倍为GPS频段。
在本申请实施例中,滤波器320为低通滤波器。低通滤波器,又称高截止滤波器、高阻滤波器,允许低于某一截频的频率通过,而大大衰减较高频率的一种滤波器。低通滤波器可以去掉信号中不必要的高频成分,或者说去掉高频干扰。滤波器320用于滤除B13的二次谐波。
第二主天线330用于发射B13信号。
在本实施例中,由于通过单独设置B13双工器的射频通路,使得LTE_B13主波信号由功率放大器输出经过B13双工器后,不经过任何非线性器件(例如图1所示的开关240和射频模块230),直接由第二主天线发射出去,因此,B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合,从而能够减小射频通路对GPS通路的干扰。
如图2,本申请提供一种移动终端2,包括如上所述的射频架构1。所述移动终端2可以为:手机、平板电脑、笔记本电脑、导航仪等产品。
本申请通过单独设置B13双工器的射频通路,使得LTE_B13主波信号由功率放大器输出经过B13双工器后,不经过任何非线性器件,直接由第二主天线发射出去,从而B13主波和B13二次谐波对GPS通路的影响只存在天线之间的耦合,极大地减小射频通路对GPS通路的干扰。
以上对本申请实施例所提供的一种射频架构及移动终端进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。

Claims (10)

1.一种射频架构,其特征在于,包括:
一GPS通路;
一第一射频通路,包括依次连接的功率放大器、第一双工器、射频模块和开关以及均与所述开关相连的第一主天线和分集天线;以及
一第二射频通路,包括依次连接的所述功率放大器、第二双工器、滤波器以及第二主天线。
2.根据权利要求1所述的射频架构,其特征在于,所述GPS通路包括GPS天线以及GPS滤波器。
3.根据权利要求2所述的射频架构,其特征在于,所述GPS滤波器为高通滤波器。
4.根据权利要求1所述的射频架构,其特征在于,所述开关为双刀双掷开关。
5.根据权利要求4所述的射频架构,其特征在于,所述开关为非线性器件。
6.根据权利要求1所述的射频架构,其特征在于,所述射频模块为非线性器件。
7.根据权利要求1所述的射频架构,其特征在于,所述滤波器为低通滤波器。
8.根据权利要求1所述的射频架构,其特征在于,所述第二双工器为B13双工器。
9.根据权利要求1所述的射频架构,其特征在于,所述第二双工器发射频率的2倍为GPS频段。
10.一种移动终端,其特征在于,包括任一如权利要求1-9所述的射频架构。
CN201911235791.5A 2019-12-05 2019-12-05 射频架构及移动终端 Pending CN110855315A (zh)

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CN201911235791.5A CN110855315A (zh) 2019-12-05 2019-12-05 射频架构及移动终端
PCT/CN2019/125939 WO2021109240A1 (zh) 2019-12-05 2019-12-17 射频架构及移动终端
US17/621,756 US20220350029A1 (en) 2019-12-05 2019-12-17 Radio frequency architecture and mobile terminal

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355498A (zh) * 2020-03-10 2020-06-30 惠州Tcl移动通信有限公司 射频电路及终端

Citations (4)

* Cited by examiner, † Cited by third party
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