WO2013097389A1 - Method and device for implementing built-in antenna of mobile television and fm radio - Google Patents

Method and device for implementing built-in antenna of mobile television and fm radio Download PDF

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Publication number
WO2013097389A1
WO2013097389A1 PCT/CN2012/074681 CN2012074681W WO2013097389A1 WO 2013097389 A1 WO2013097389 A1 WO 2013097389A1 CN 2012074681 W CN2012074681 W CN 2012074681W WO 2013097389 A1 WO2013097389 A1 WO 2013097389A1
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WO
WIPO (PCT)
Prior art keywords
mobile
antenna
built
signal
switch
Prior art date
Application number
PCT/CN2012/074681
Other languages
French (fr)
Chinese (zh)
Inventor
胡易木
朱大龙
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2013097389A1 publication Critical patent/WO2013097389A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream

Definitions

  • the invention relates to the field of mobile TV and FM antenna design, and in particular to a method and a device for implementing a mobile TV and an FM built-in antenna. Background technique
  • Mobile terminals with mobile TV (Mobile TV) and FM (Frequency Modulation) functions are increasing.
  • Early mobile TVs generally use built-in whip antennas, while FM uses headphones as antennas.
  • the built-in whip antennas are larger in size. This has hindered the development of miniaturization of mobile terminals, so an external antenna form has emerged, which is provided as a mobile terminal accessory.
  • a mobile terminal in the form of an external antenna is configured with only one type of television antenna, and is connected to a corresponding receiver RF port when a mobile TV function is required.
  • the RF port can be a dedicated RF connector, which is essentially a mechanical single-pole double-throw switch.
  • the RF channel is switched to an external antenna. If no external antenna is connected, the RF channel Connected to the built-in antenna, the built-in antenna is less efficient than the external antenna.
  • the RF port must use a dedicated RF connector with a single-pole, double-throw switch function, which requires the shape of the mobile terminal and is costly.
  • Practice has proved that non-professional RF ports, such as headphone jacks, can also be used as mobile TV RF signal interfaces. Since the commonly used headphone jack does not have the above-mentioned single-pole double-throw switch function, it is still necessary to insert the earphone to receive the mobile TV signal.
  • the main objective of the embodiments of the present invention is to provide a method and an apparatus for implementing a mobile TV and an FM built-in antenna, so as to solve the problem that when a non-professional radio frequency interface is used as an external antenna interface, the mobile TV cannot be received through the built-in antenna. / or FM signal problems.
  • Embodiments of the present invention provide a method for implementing a mobile TV and an FM built-in antenna, including: multiplexing a signal line in a mobile terminal as a built-in antenna of a mobile TV and a frequency modulated FM radio (FM), or configuring a dedicated mobile TV and FM Built-in antenna
  • FM frequency modulated FM radio
  • the mobile TV and FM built-in antenna receive mobile TV and/or FM signals when the RF switch is on.
  • Reusing the signal line in the mobile terminal as a mobile TV and an FM built-in antenna comprising: multiplexing a signal line of a speaker or an earpiece as a mobile TV and an FM built-in antenna; or multiplexing a signal line of an antenna capable of receiving a signal in the mobile terminal as Mobile TV and FM built-in antenna.
  • the method further includes:
  • the method further includes:
  • Mobile TV and/or FM signals are obtained from signals received from mobile TV and FM internal antennas based on the frequency of the mobile TV and/or FM signals.
  • the method further includes:
  • Performing impedance adjustment on the received mobile TV and/or FM signal, matching the signal impedance with the signal impedance required by the RF switch, and adjusting the adjusted mobile TV through the RF switch And/or FM signals are passed to the mobile television receiver and/or the FM receiver.
  • the method further includes: performing low noise amplification on the adjusted mobile TV and/or FM signal, and transmitting the same to the mobile television receiver through the RF switch and/or FM receiver.
  • the method further includes: low-noise amplification of the mobile television and/or FM signals output by the radio frequency switch and transmission to the mobile television receiver and/or the FM receiver.
  • the method also includes:
  • the radio frequency switch When the external antenna is inserted into the mobile terminal, the radio frequency switch is controlled to be in an off state; when the external antenna is not inserted in the earphone interface, the radio frequency switch is controlled to be in an open state; or
  • the opening or closing of the radio frequency switch is controlled according to user input.
  • the embodiment of the invention further provides an implementation device for a mobile TV and an FM built-in antenna, comprising: a built-in antenna module and an RF switch; wherein:
  • the built-in antenna module includes a built-in antenna; the built-in antenna is a signal line in a mobile terminal, or a dedicated mobile TV and an FM built-in antenna;
  • the internal antenna is configured to receive a mobile television and/or FM signal when the radio frequency switch is in an open state.
  • the signal line is a signal line of a speaker or an earpiece, or a signal line of an antenna of a mobile terminal capable of receiving a signal.
  • the built-in antenna module further includes: a high frequency choke circuit configured to block a mobile TV received by the circuit connected to the speaker or the earpiece from the built-in antenna and/or Or interference from FM signals.
  • the built-in antenna module further includes:
  • a frequency divider set to be based on the frequency of the mobile TV and/or FM signal, from the built-in
  • the mobile television and/or FM signals are obtained from signals received by the antenna.
  • the internal antenna module further includes: a matching circuit configured to perform impedance adjustment on the mobile TV and/or FM signal received by the internal antenna to match a signal impedance with a signal impedance required by the RF switch;
  • the radio frequency switch is further arranged to transmit the adjusted mobile TV and/or FM signal to the mobile television receiver and/or the FM receiver.
  • the device further includes: a low noise amplification module configured to perform low noise amplification on the adjusted mobile TV and/or FM signal of the matching circuit; or, configured to output a mobile TV and/or FM signal to the radio frequency switch Perform low noise amplification.
  • a low noise amplification module configured to perform low noise amplification on the adjusted mobile TV and/or FM signal of the matching circuit; or, configured to output a mobile TV and/or FM signal to the radio frequency switch Perform low noise amplification.
  • the apparatus further includes: a baseband module configured to control opening or closing of the radio frequency switch, and further configured to control opening or closing of the low noise amplification module.
  • the baseband module is further configured to: when the mobile terminal is inserted into the external antenna, the radio frequency switch is controlled to be in a closed state; and when the mobile terminal is not inserted into the external antenna, the radio frequency switch is controlled to be in an open state; or Controlling the opening or closing of the radio frequency switch according to user input; and setting to control the opening or closing of the low noise amplifying module to be consistent with the radio frequency switch.
  • a method and apparatus for implementing a mobile TV and an FM built-in antenna by multiplexing a signal line in a mobile terminal as a mobile TV and an FM built-in antenna, or configuring a dedicated mobile TV and an FM built-in antenna to receive the mobile TV and / or FM signal.
  • a function of identifying whether or not to insert an external antenna is added to automatically control the selection of the optimal receiving antenna to realize switching between the built-in antenna and the external antenna. When not recognized, you can also manually select the internal or external antenna.
  • the above method has no limitation on the external antenna interface.
  • a mobile terminal using a non-professional RF interface such as a headphone interface as an external antenna interface
  • a non-professional RF interface such as a headphone interface as an external antenna interface
  • FIG. 1 is a schematic diagram of an apparatus for implementing a mobile TV and an FM built-in antenna according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a multiplexed speaker or handset signal line as a built-in antenna according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of multiplexing a GPS signal line according to an embodiment of the present invention
  • Schematic diagram of the built-in antenna
  • FIG. 4 is a schematic diagram of the operation of the frequency divider of the GPS antenna;
  • Figure 5 is a schematic diagram 1 of low noise amplification
  • Figure 6 is a schematic diagram 2 of low noise amplification
  • FIG. 7 is a flowchart of a method for implementing a mobile TV and an FM built-in antenna according to an embodiment of the present invention. detailed description
  • the basic idea of the implementation method of the mobile TV and the FM built-in antenna in the embodiment of the present invention is: by selecting an appropriate signal line in the mobile terminal as an internal antenna, or configuring an independent built-in antenna in the mobile terminal, and increasing whether to identify whether to insert an external antenna.
  • the function is to control the selection of the best receiving antenna to achieve the switching of the built-in antenna and the external antenna.
  • the method of the embodiment of the present invention can be used for a mobile terminal using a non-professional radio frequency interface, such as a headphone interface as an external antenna interface, in an area with a strong signal, even if an external antenna (such as a headphone) is not inserted, the built-in antenna can Received mobile TV and / or FM signals.
  • FIG. 1 is a schematic diagram of an implementation apparatus for a mobile TV and an FM built-in antenna according to an embodiment of the present invention, which mainly includes: a built-in antenna module and an RF switch; wherein:
  • the built-in antenna module mainly includes a built-in antenna for receiving mobile TV and/or FM signals when the RF switch is turned on.
  • the built-in antenna in the embodiment of the present invention may be an existing signal line in the mobile terminal, or may be a dedicated mobile TV and an FM built-in antenna.
  • the above-mentioned existing signal line may be a signal line of a speaker or an earpiece, or may be a signal line of an antenna capable of receiving a signal in a mobile terminal, such as a signal line of a GPS antenna, a WiFi antenna or the like.
  • the composition of the built-in antenna module is different depending on the signal line. Specifically: When the signal line is the signal line of the speaker or the earpiece, the built-in antenna module further includes: a high frequency choke circuit for blocking the connection of the mobile TV and/or FM signal received by the internal antenna to other circuits connected to the speaker or the earpiece. especially.
  • the built-in antenna module further includes: a frequency splitter, configured to obtain the mobile TV or the FM from the signal received by the built-in antenna according to the frequency of the mobile television or the FM signal. signal.
  • the built-in antenna module further includes: a matching circuit for impedance adjustment of the mobile TV and/or FM signal received by the built-in antenna to match the signal impedance with the signal impedance required by the RF switch ;
  • the RF switch is also used to communicate the adjusted mobile TV and/or FM signals to the mobile television receiver and/or the FM receiver.
  • the device further includes a low noise amplification module.
  • the low noise amplification module can be located between the matching circuit and the RF switch.
  • the adjustment circuit is used to adjust the matching circuit.
  • Mobile TV or FM signal for low noise amplification; the low noise amplification module can also be located between the RF switch and the receiver (mobile TV receiver and FM receiver), in this case, the mobile TV for outputting the RF switch Or FM signal for low noise amplification.
  • the apparatus also includes: a baseband module for controlling the opening or closing of the radio frequency switch and opening or closing of the low noise amplification module. specific:
  • the control RF switch When detecting that the mobile terminal is inserted into the external antenna, the control RF switch is turned off; when it is detected that the mobile terminal is not inserted into the external antenna, the control RF switch is turned on; or, ⁇ according to the user input to control the RF The switch is turned on or off;
  • the antenna it is necessary to have a conductor of a certain length to receive the wireless signal. In order to improve the receiving efficiency, such a conductor needs to be disposed outside the main board of the mobile terminal or in the empty area on the main board.
  • the antenna conductors that can be selected include a speaker, an earpiece, a Global Positioning System (GPS) antenna, a WIFI antenna, and a printed circuit board (PCB) side key.
  • Figure 2 is a schematic diagram of a multiplexed speaker or handset signal line as an internal antenna.
  • the parts that need to be added on the main board are: high frequency choke circuit, matching circuit and RF switch.
  • the RF switch can be either a PIN diode or an electronically controlled switch.
  • the RF switch is controlled by the baseband module. For example, when the earphone interface is used as the external antenna interface, the baseband module can detect whether the earphone interface is inserted into the earphone (that is, whether an external antenna is inserted), and if the earphone interface is inserted into the earphone interface, Then, the baseband module outputs a corresponding signal to control the RF switch to be in a closed state; if it is detected that the earphone interface is not inserted into the earphone, the baseband module outputs a corresponding signal to control the RF switch to be in an open state.
  • the baseband module can control the radio frequency according to the user input.
  • the switch is turned on or off.
  • the high-frequency choke circuit can be added, and the inductor or Magnetic beads.
  • a matching circuit that adjusts the impedance of the mobile TV and/or FM signals received by the internal antenna to match the impedance of the output signal to the impedance of the input signal required by the RF switch to optimize the built-in antenna performance.
  • the RF switch can also be equipped with a bias circuit.
  • the signal output from the RF switch is analyzed by the frequency divider 1 and output to the corresponding mobile TV receiver or FM receiver.
  • the signal is directly transmitted to the frequency distributor 1 through the headphone interface, and after analysis, it is output to the corresponding mobile television receiver or FM receiver.
  • Fig. 3 is a schematic view showing a multiplexed GPS antenna as a built-in antenna.
  • the structure is substantially the same as that of Fig. 2, and the difference is the configuration of the built-in antenna module.
  • GPS can be used as a built-in antenna, it can receive GPS signals and receive mobile TV and/or FM signals. Therefore, in order not to affect the operation of the GPS antenna itself, it is necessary to frequency-allocate the signals it receives, according to mobile TV and / Or the frequency of the FM signal, the frequency of the GPS signal, and the mobile TV and/or FM signal, GPS signal can be separated from the signal received by it.
  • a frequency splitter 2 is added to the built-in antenna module.
  • the frequency splitter 2 supplies the separated mobile TV and/or FM signals to the matching circuit for impedance adjustment; the separated GPS signals are Passed to the GPS module for corresponding processing.
  • the frequency divider 2 can be flexibly designed, and it can be a band rejection filter or a low-pass filter.
  • the antenna is a GPS antenna
  • the frequency divider 2 can use a band rejection filter
  • the stop band is a GPS operating band
  • the mobile TV and FM bands are pass bands.
  • the filter in frequency divider 2 exhibits high impedance in the GPS band and low impedance in the mobile TV and FM bands.
  • a low-noise amplifier module can be placed between the built-in antenna and the RF switch to form an active antenna, as shown in Figure 5. It is also possible to provide a low-noise amplification module between the RF switch and the receiving circuit to form an active antenna, as shown in Fig. 6, which also improves the performance of the external antenna.
  • the receiving circuit is the circuit of Figure 2, Figure 3, which follows the arrow and follows node A.
  • the low noise amplification module includes a low noise amplifier and a matching circuit.
  • the low noise amplifier is used to perform low noise amplification on the received signal.
  • one of the matching circuits is used to receive the output signal of the built-in antenna.
  • the impedance is adjusted to match the impedance of the input signal of the low noise amplifier;
  • another matching circuit is used to receive the output signal of the low noise amplifier, and the signal impedance is adjusted to match the impedance of the input signal of the RF switch.
  • one of the matching circuits is used for the output signal of the RF switch, and the signal impedance is adjusted to match the input signal impedance of the low noise amplifier; the other matching circuit is used to receive the output signal of the low noise amplifier, and the signal impedance is Adjusted to match the input signal impedance of the frequency divider.
  • the low noise amplifier cannot be always in operation, it needs to be controlled by the baseband module to be turned on or off. Specifically, the open or closed state is consistent with the RF switch.
  • a bias circuit is required.
  • a special mobile TV and an FM built-in antenna can also be configured.
  • the circuit is relatively simple, and only the matching circuit and the RF switch can be used. If necessary, a low-noise amplification module can also be added to form an active antenna.
  • an embodiment of the present invention provides a method for implementing a mobile TV and an FM built-in antenna. As shown in FIG. 7, the method includes the following steps:
  • Step 701 Reuse the signal line in the mobile terminal as a mobile TV and an FM built-in antenna, or configure a dedicated mobile TV and an FM built-in antenna.
  • Step 702 When the RF switch is turned on, the mobile TV and the FM built-in antenna receive the mobile TV and/or FM signal.
  • the signal line multiplexed in the embodiment of the present invention may be: a signal line of a speaker or an earpiece, or a signal line of an antenna (such as a GPS antenna, a WiFi antenna, a flexible PCB side key, etc.) capable of receiving signals in the mobile terminal.
  • a signal line of a speaker or an earpiece or a signal line of an antenna (such as a GPS antenna, a WiFi antenna, a flexible PCB side key, etc.) capable of receiving signals in the mobile terminal.
  • the processing of interference on the received mobile TV and/or FM signal is also different depending on the multiplexed signal line, and there are two processing methods as follows: 1. If the signal line of the speaker or earpiece is multiplexed as the mobile TV and the FM built-in antenna, after receiving the mobile TV or FM signal, it is necessary to block the circuit connected to the speaker or the earpiece by high frequency turbulence to the mobile TV and/or Interference from FM signals.
  • the signal line of the antenna capable of receiving signals in the mobile terminal is multiplexed as the mobile TV and the FM built-in antenna, then it is also necessary to receive signals from the mobile TV and the FM built-in antenna according to the frequency of the mobile TV and/or FM signal. Get mobile TV and / or FM signals.
  • the mobile TV and/or FM signal processed by one of the above two methods is also required to perform impedance adjustment, so that the adjusted signal impedance matches the input signal impedance required by the RF switch, and then passes.
  • the RF switch transmits the adjusted mobile TV and/or FM signal to the mobile television receiver and/or the FM receiver.
  • the mobile TV and/or FM signal can be low noise amplified and then transmitted to the mobile TV receiver and/or the FM receiver through the RF switch.
  • the mobile TV and/or FM signals output by the RF switch can also be noise-amplified and transmitted to the mobile TV receiver and/or FM receiver.
  • the control RF switch When the headphone interface of the mobile terminal is detected to be inserted into the earphone, the control RF switch is turned off; when the earphone interface is not inserted into the earphone, the control RF switch is turned on. Or, the RF switch can be turned on or off according to user input.

Abstract

Disclosed are a method and device for implementing a built-in antenna for a mobile television and a frequency-modulation FM Radio (FM). The method comprises: multiplexing a signal line in a mobile terminal as a built-in antenna for a mobile television and an FM radio, or configuring a special built-in antenna for a mobile television and an FM radio; and the built-in antenna for a mobile television and an FM radio receiving the signals of the mobile television and/or the FM radio when a radio-frequency switch is in an ON state. According to the present invention, when a non-special radio-frequency interface is used as an external antenna interface, the signals of a mobile television and/or an FM radio can be received through the built-in antenna.

Description

一种移动电视和 FM内置天线的实现方法和装置 技术领域  Method and device for implementing mobile TV and FM built-in antenna
本发明涉及移动电视和 FM天线设计领域， 特别是指一种移动电视和 FM内置天线的实现方法和装置。 背景技术  The invention relates to the field of mobile TV and FM antenna design, and in particular to a method and a device for implementing a mobile TV and an FM built-in antenna. Background technique
附带移动电视 ( Mobile TV )及频率调制调频收音机（FM, Frequency Modulation )功能的移动终端日渐增多， 早期移动电视一般使用内置拉杆天 线， 而 FM使用耳机作为天线， 但是， 内置拉杆天线尺寸较大， 阻碍了移 动终端小型化发展， 所以出现了外置天线形式， 该外置天线作为移动终端 附件提供。 一般来说， 外置天线形式的移动终端只配置了一种电视天线， 在需要使用移动电视功能时连接到对应的接收机射频端口。  Mobile terminals with mobile TV (Mobile TV) and FM (Frequency Modulation) functions are increasing. Early mobile TVs generally use built-in whip antennas, while FM uses headphones as antennas. However, the built-in whip antennas are larger in size. This has hindered the development of miniaturization of mobile terminals, so an external antenna form has emerged, which is provided as a mobile terminal accessory. Generally, a mobile terminal in the form of an external antenna is configured with only one type of television antenna, and is connected to a corresponding receiver RF port when a mobile TV function is required.
现有技术中， 射频端口可以选用专用射频连接器， 其实质是机械的单 刀双掷开关， 当外置电视天线插上时， 射频通道切换到外置天线， 如果没 有接外置天线， 射频通道与内置天线相连， 该内置天线的效率比外置天线 差。 采用这种方案， 在信号较强的区域， 用户无需接外置天线就可以收看 移动电视， 只有在信号较弱的区域， 才需要连接外置天线， 能满足一般用 户对使用方便性的需求。  In the prior art, the RF port can be a dedicated RF connector, which is essentially a mechanical single-pole double-throw switch. When an external TV antenna is plugged in, the RF channel is switched to an external antenna. If no external antenna is connected, the RF channel Connected to the built-in antenna, the built-in antenna is less efficient than the external antenna. With this scheme, in areas with strong signals, users can watch mobile TV without connecting an external antenna. Only in areas with weak signals, it is necessary to connect an external antenna to meet the needs of general users for ease of use.
然而， 上述方案有个缺陷： 射频端口必须使用专用的带单刀双掷开关 功能的射频连接器， 对移动终端的造型有要求， 且成本较高。 实践证明， 非专业射频端口， 如耳机接口， 也可以作为移动电视射频信号接口。 由于 常用的耳机接口不具有上述单刀双掷开关功能， 所以目前仍然必须插入耳 机才能接收到移动电视信号。 发明内容 However, the above solution has a drawback: The RF port must use a dedicated RF connector with a single-pole, double-throw switch function, which requires the shape of the mobile terminal and is costly. Practice has proved that non-professional RF ports, such as headphone jacks, can also be used as mobile TV RF signal interfaces. Since the commonly used headphone jack does not have the above-mentioned single-pole double-throw switch function, it is still necessary to insert the earphone to receive the mobile TV signal. Summary of the invention
有鉴于此， 本发明实施例的主要目的在于提供一种移动电视和 FM 内 置天线的实现方法和装置， 以解决在采用非专业射频接口作为外置天线接 口时， 无法通过内置天线接收移动电视和 /或 FM信号的问题。  In view of this, the main objective of the embodiments of the present invention is to provide a method and an apparatus for implementing a mobile TV and an FM built-in antenna, so as to solve the problem that when a non-professional radio frequency interface is used as an external antenna interface, the mobile TV cannot be received through the built-in antenna. / or FM signal problems.
为达到上述目的， 本发明实施例的技术方案是这样实现的：  To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:
本发明实施例提供了一种移动电视和 FM内置天线的实现方法， 包括： 复用移动终端中的信号线作为移动电视和频率调制调频收音机（FM ) 内置天线， 或者配置专门的移动电视和 FM内置天线；  Embodiments of the present invention provide a method for implementing a mobile TV and an FM built-in antenna, including: multiplexing a signal line in a mobile terminal as a built-in antenna of a mobile TV and a frequency modulated FM radio (FM), or configuring a dedicated mobile TV and FM Built-in antenna
射频开关处于打开状态时， 所述移动电视和 FM 内置天线接收移动电 视和 /或 FM信号。  The mobile TV and FM built-in antenna receive mobile TV and/or FM signals when the RF switch is on.
复用移动终端中的信号线作为移动电视和 FM内置天线， 包括： 复用扬声器或听筒的信号线作为移动电视和 FM内置天线； 或者， 复用移动终端中能够接收信号的天线的信号线作为移动电视和 FM 内 置天线。  Reusing the signal line in the mobile terminal as a mobile TV and an FM built-in antenna, comprising: multiplexing a signal line of a speaker or an earpiece as a mobile TV and an FM built-in antenna; or multiplexing a signal line of an antenna capable of receiving a signal in the mobile terminal as Mobile TV and FM built-in antenna.
所述复用扬声器或听筒的信号线作为移动电视和 FM 内置天线时， 在 接收到移动电视或 FM信号之后， 该方法还包括：  When the signal line of the multiplexed speaker or the earpiece is used as a mobile TV and an FM built-in antenna, after receiving the mobile TV or FM signal, the method further includes:
通过高频扼流阻隔与所述扬声器或听筒连接的电路对所述移动电视和 / 或 FM信号的干扰。  Interference with the mobile television and/or FM signals by high frequency turbulence blocking circuitry connected to the speaker or earpiece.
所述复用移动终端中能够接收信号的天线的信号线作为移动电视和 FM内置天线时， 该方法还包括：  When the signal line of the antenna capable of receiving signals in the mobile terminal is used as the mobile TV and the FM internal antenna, the method further includes:
根据移动电视和 /或 FM信号的频率， 从移动电视和 FM内置天线接收 的信号中获取移动电视和 /或 FM信号。  Mobile TV and/or FM signals are obtained from signals received from mobile TV and FM internal antennas based on the frequency of the mobile TV and/or FM signals.
接收到移动电视和 /或 FM信号后， 该方法还包括：  After receiving the mobile TV and/or FM signals, the method further includes:
对所述接收到的移动电视和 /或 FM信号进行阻抗调整， 使信号阻抗与 所述射频开关要求的信号阻抗匹配， 并通过射频开关将调整后的移动电视 和 /或 FM信号传递给移动电视接收机和 /或 FM接收机。 Performing impedance adjustment on the received mobile TV and/or FM signal, matching the signal impedance with the signal impedance required by the RF switch, and adjusting the adjusted mobile TV through the RF switch And/or FM signals are passed to the mobile television receiver and/or the FM receiver.
对所述接收到的移动电视或 FM信号进行阻抗调整之后， 该方法还包 括： 对调整后的移动电视和 /或 FM信号进行低噪放大， 并通过射频开关传 递给移动电视接收机和 /或 FM接收机。  After performing impedance adjustment on the received mobile TV or FM signal, the method further includes: performing low noise amplification on the adjusted mobile TV and/or FM signal, and transmitting the same to the mobile television receiver through the RF switch and/or FM receiver.
该方法还包括： 对射频开关输出的移动电视和 /或 FM信号进行低噪放 大， 并传递给移动电视接收机和 /或 FM接收机。  The method further includes: low-noise amplification of the mobile television and/or FM signals output by the radio frequency switch and transmission to the mobile television receiver and/or the FM receiver.
该方法还包括：  The method also includes:
检测到移动终端的插入外置天线时， 控制所述射频开关为关闭状态； 检测到所述耳机接口未插入外置天线时， 控制所述射频开关为打开状态； 或者，  When the external antenna is inserted into the mobile terminal, the radio frequency switch is controlled to be in an off state; when the external antenna is not inserted in the earphone interface, the radio frequency switch is controlled to be in an open state; or
根据用户输入控制所述射频开关的打开或关闭。  The opening or closing of the radio frequency switch is controlled according to user input.
本发明实施例还提供了一种移动电视和 FM 内置天线的实现装置， 包 括： 内置天线模块和射频开关； 其中：  The embodiment of the invention further provides an implementation device for a mobile TV and an FM built-in antenna, comprising: a built-in antenna module and an RF switch; wherein:
所述内置天线模块包括内置天线； 所述内置天线为移动终端中的信号 线， 或专门的移动电视和 FM内置天线；  The built-in antenna module includes a built-in antenna; the built-in antenna is a signal line in a mobile terminal, or a dedicated mobile TV and an FM built-in antenna;
所述内置天线， 设置为在所述射频开关处于打开状态时， 接收移动电 视和 /或 FM信号。  The internal antenna is configured to receive a mobile television and/or FM signal when the radio frequency switch is in an open state.
所述信号线为扬声器或听筒的信号线， 或者移动终端中能够接收信号 的天线的信号线。  The signal line is a signal line of a speaker or an earpiece, or a signal line of an antenna of a mobile terminal capable of receiving a signal.
所述信号线为扬声器或听筒的信号线时， 所述内置天线模块还包括： 高频扼流电路， 设置为阻隔与所述扬声器或听筒连接的电路对所述内 置天线接收的移动电视和 /或 FM信号的干扰。  When the signal line is a signal line of a speaker or an earpiece, the built-in antenna module further includes: a high frequency choke circuit configured to block a mobile TV received by the circuit connected to the speaker or the earpiece from the built-in antenna and/or Or interference from FM signals.
所述信号线为移动终端中能够接收信号的天线的信号线时， 所述内置 天线模块还包括：  When the signal line is a signal line of an antenna capable of receiving a signal in a mobile terminal, the built-in antenna module further includes:
频率分配器， 设置为根据移动电视和 /或 FM信号的频率， 从所述内置 天线接收的信号中获取移动电视和 /或 FM信号。 a frequency divider, set to be based on the frequency of the mobile TV and/or FM signal, from the built-in The mobile television and/or FM signals are obtained from signals received by the antenna.
所述内置天线模块还包括： 匹配电路， 设置为对所述内置天线接收到 的移动电视和 /或 FM信号进行阻抗调整， 使信号阻抗与所述射频开关要求 的信号阻抗匹配；  The internal antenna module further includes: a matching circuit configured to perform impedance adjustment on the mobile TV and/or FM signal received by the internal antenna to match a signal impedance with a signal impedance required by the RF switch;
相应的， 所述射频开关， 还设置为将调整后的移动电视和 /或 FM信号 传递给移动电视接收机和 /或 FM接收机。  Correspondingly, the radio frequency switch is further arranged to transmit the adjusted mobile TV and/or FM signal to the mobile television receiver and/or the FM receiver.
该装置还包括： 低噪放大模块， 设置为对所述匹配电路调整后的移动 电视和 /或 FM信号进行低噪放大； 或者， 设置为对所述射频开关输出的移 动电视和 /或 FM信号进行低噪放大。  The device further includes: a low noise amplification module configured to perform low noise amplification on the adjusted mobile TV and/or FM signal of the matching circuit; or, configured to output a mobile TV and/or FM signal to the radio frequency switch Perform low noise amplification.
该装置还包括： 基带模块， 设置为控制所述射频开关的打开或关闭， 还设置为控制所述低噪放大模块的打开或关闭。  The apparatus further includes: a baseband module configured to control opening or closing of the radio frequency switch, and further configured to control opening or closing of the low noise amplification module.
所述基带模块， 还设置为检测到移动终端插入外置天线时， 控制所述 射频开关为关闭状态； 检测到所述移动终端未插入外置天线时， 控制所述 射频开关为打开状态； 或者， 根据用户输入控制所述射频开关的打开或关 闭； 还设置为控制所述低噪放大模块的打开或关闭与所述射频开关一致。  The baseband module is further configured to: when the mobile terminal is inserted into the external antenna, the radio frequency switch is controlled to be in a closed state; and when the mobile terminal is not inserted into the external antenna, the radio frequency switch is controlled to be in an open state; or Controlling the opening or closing of the radio frequency switch according to user input; and setting to control the opening or closing of the low noise amplifying module to be consistent with the radio frequency switch.
本发明实施例的移动电视和 FM 内置天线的实现方法和装置， 通过复 用移动终端中的信号线作为移动电视和 FM 内置天线， 或者配置专门的移 动电视和 FM内置天线， 来接收移动电视和 /或 FM信号。 另外， 还增加了 识别是否插入外置天线的功能， 以自动控制选择最佳接收天线， 实现内置 天线和外置天线的切换。 当不能识别时， 还可以通过手动选择内置或外置 天线。  A method and apparatus for implementing a mobile TV and an FM built-in antenna according to an embodiment of the present invention, by multiplexing a signal line in a mobile terminal as a mobile TV and an FM built-in antenna, or configuring a dedicated mobile TV and an FM built-in antenna to receive the mobile TV and / or FM signal. In addition, a function of identifying whether or not to insert an external antenna is added to automatically control the selection of the optimal receiving antenna to realize switching between the built-in antenna and the external antenna. When not recognized, you can also manually select the internal or external antenna.
上述方法对外置天线接口无任何限制， 对于采用非专业射频接口、 如 耳机接口作为外置天线接口的移动终端而言， 在信号较强的区域， 即使没 有插入外置天线， 通过自动或手段选择， 就可以通过内置天线也接收移动 电视和 /或 FM信号。 附图说明 The above method has no limitation on the external antenna interface. For a mobile terminal using a non-professional RF interface, such as a headphone interface as an external antenna interface, in a region with a strong signal, even if no external antenna is inserted, it is selected by automatic or means. , you can also receive mobile TV and / or FM signals through the built-in antenna. DRAWINGS
图 1为本发明实施例移动电视和 FM内置天线的实现装置示意图； 图 2为本发明实施例复用扬声器或听筒信号线作为内置天线的示意图； 图 3为本发明实施例复用 GPS信号线作为内置天线的示意图； 图 4为 GPS天线的频率分配器工作示意图；  1 is a schematic diagram of an apparatus for implementing a mobile TV and an FM built-in antenna according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a multiplexed speaker or handset signal line as a built-in antenna according to an embodiment of the present invention; FIG. 3 is a schematic diagram of multiplexing a GPS signal line according to an embodiment of the present invention; Schematic diagram of the built-in antenna; FIG. 4 is a schematic diagram of the operation of the frequency divider of the GPS antenna;
图 5为低噪放大示意图一；  Figure 5 is a schematic diagram 1 of low noise amplification;
图 6为低噪放大示意图二；  Figure 6 is a schematic diagram 2 of low noise amplification;
图 7为本发明实施例移动电视和 FM内置天线的实现方法流程图。 具体实施方式  FIG. 7 is a flowchart of a method for implementing a mobile TV and an FM built-in antenna according to an embodiment of the present invention. detailed description
本发明实施例移动电视和 FM 内置天线的实现方法的基本思想是： 通 过选择移动终端中适当的信号线作为内置天线， 或在移动终端中配置独立 的内置天线， 并增加识别是否插入外置天线的功能， 以控制选择最佳接收 天线， 实现内置天线和外置天线的切换。 本发明实施例的方法对于采用非 专业射频接口、 如耳机接口作为外置天线接口的移动终端而言， 在信号较 强的区域， 即使没有插入外置天线（如耳机）， 通过内置天线也能够接收到 移动电视和 /或 FM信号。  The basic idea of the implementation method of the mobile TV and the FM built-in antenna in the embodiment of the present invention is: by selecting an appropriate signal line in the mobile terminal as an internal antenna, or configuring an independent built-in antenna in the mobile terminal, and increasing whether to identify whether to insert an external antenna. The function is to control the selection of the best receiving antenna to achieve the switching of the built-in antenna and the external antenna. The method of the embodiment of the present invention can be used for a mobile terminal using a non-professional radio frequency interface, such as a headphone interface as an external antenna interface, in an area with a strong signal, even if an external antenna (such as a headphone) is not inserted, the built-in antenna can Received mobile TV and / or FM signals.
如图 1所示为本发明实施例提供的移动电视和 FM内置天线的实现装 置， 主要包括： 内置天线模块和射频开关； 其中：  FIG. 1 is a schematic diagram of an implementation apparatus for a mobile TV and an FM built-in antenna according to an embodiment of the present invention, which mainly includes: a built-in antenna module and an RF switch; wherein:
内置天线模块主要包括内置天线， 用于在射频开关处于打开状态时， 接收移动电视和 /或 FM信号。 本发明实施例中的内置天线可以是移动终端 中的已有信号线， 也可以是配置的专门的移动电视和 FM内置天线。  The built-in antenna module mainly includes a built-in antenna for receiving mobile TV and/or FM signals when the RF switch is turned on. The built-in antenna in the embodiment of the present invention may be an existing signal line in the mobile terminal, or may be a dedicated mobile TV and an FM built-in antenna.
其中， 上述的已有信号线可以为扬声器或听筒的信号线， 或者可以为 移动终端中能够接收信号的天线的信号线， 例如 GPS天线、 WiFi天线等的 信号线。  The above-mentioned existing signal line may be a signal line of a speaker or an earpiece, or may be a signal line of an antenna capable of receiving a signal in a mobile terminal, such as a signal line of a GPS antenna, a WiFi antenna or the like.
根据信号线的不同， 内置天线模块的构成也不相同， 具体的： 当信号线为扬声器或听筒的信号线时， 内置天线模块还包括： 高频扼 流电路， 用于阻隔与扬声器或听筒连接的其他电路对内置天线接收的移动 电视和 /或 FM信号的干 4尤。 The composition of the built-in antenna module is different depending on the signal line. Specifically: When the signal line is the signal line of the speaker or the earpiece, the built-in antenna module further includes: a high frequency choke circuit for blocking the connection of the mobile TV and/or FM signal received by the internal antenna to other circuits connected to the speaker or the earpiece. especially.
当信号线为移动终端中能够接收信号的天线的信号线时， 内置天线模 块还包括： 频率分配器， 用于根据移动电视或 FM信号的频率， 从内置天 线接收的信号中获取移动电视或 FM信号。  When the signal line is the signal line of the antenna capable of receiving the signal in the mobile terminal, the built-in antenna module further includes: a frequency splitter, configured to obtain the mobile TV or the FM from the signal received by the built-in antenna according to the frequency of the mobile television or the FM signal. signal.
由此可见， 根据信号线选择的不同， 上述高频扼流电路和频率分配器 是可选的。  It can be seen that the above-mentioned high frequency choke circuit and frequency divider are optional depending on the signal line selection.
为了使内置天线的性能达到的最佳， 内置天线模块还包括： 匹配电路， 用于对内置天线接收到的移动电视和 /或 FM信号进行阻抗调整， 使信号阻 抗与射频开关要求的信号阻抗匹配；  In order to achieve the best performance of the built-in antenna, the built-in antenna module further includes: a matching circuit for impedance adjustment of the mobile TV and/or FM signal received by the built-in antenna to match the signal impedance with the signal impedance required by the RF switch ;
相应的， 射频开关， 还用于将调整后的移动电视和 /或 FM信号传递给 移动电视接收机和 /或 FM接收机。  Correspondingly, the RF switch is also used to communicate the adjusted mobile TV and/or FM signals to the mobile television receiver and/or the FM receiver.
为了改善内置天线的性能， 该装置还包括低噪放大模块， 如图 1所示， 该低噪放大模块可以位于匹配电路和射频开关之间， 此种情况下， 用于对 匹配电路调整后的移动电视或 FM信号进行低噪放大； 该低噪放大模块还 可以位于射频开关与接收机（移动电视接收机和 FM接收机）之间， 此种 情况下， 用于对射频开关输出的移动电视或 FM信号进行低噪放大。  In order to improve the performance of the built-in antenna, the device further includes a low noise amplification module. As shown in FIG. 1, the low noise amplification module can be located between the matching circuit and the RF switch. In this case, the adjustment circuit is used to adjust the matching circuit. Mobile TV or FM signal for low noise amplification; the low noise amplification module can also be located between the RF switch and the receiver (mobile TV receiver and FM receiver), in this case, the mobile TV for outputting the RF switch Or FM signal for low noise amplification.
该装置还包括： 基带模块， 用于控制射频开关的打开或关闭， 以及低 噪放大模块的打开或关闭。 具体的：  The apparatus also includes: a baseband module for controlling the opening or closing of the radio frequency switch and opening or closing of the low noise amplification module. specific:
对于射频开关： 当检测到移动终端插入外置天线时， 控制射频开关为 关闭状态； 当检测到移动终端未插入外置天线时， 控制射频开关为打开状 态； 或者， ^^据用户输入控制射频开关的打开或关闭；  For the RF switch: When detecting that the mobile terminal is inserted into the external antenna, the control RF switch is turned off; when it is detected that the mobile terminal is not inserted into the external antenna, the control RF switch is turned on; or, ^^ according to the user input to control the RF The switch is turned on or off;
对于低噪放大模块： 控制其打开或关闭与射频开关一致。  For low noise amplification modules: Control whether it is on or off in accordance with the RF switch.
下面通过具体实施例来说明本发明实施例的上述方案。 作为天线， 必须要具有一定长度的导体来接收无线信号， 为了提高接 收效率， 这样的导体需要设置在移动终端的主板之外或者主板上的清空区 里。 一般， 可以选择的天线导体有扬声器、 听筒、 全球定位系统 （GPS, Global Positioning System )天线、 WIFI天线、柔性印刷电路板（ PCB, Printed Circuit Board )侧键等。 The above solution of the embodiment of the present invention will be described below by way of specific embodiments. As the antenna, it is necessary to have a conductor of a certain length to receive the wireless signal. In order to improve the receiving efficiency, such a conductor needs to be disposed outside the main board of the mobile terminal or in the empty area on the main board. Generally, the antenna conductors that can be selected include a speaker, an earpiece, a Global Positioning System (GPS) antenna, a WIFI antenna, and a printed circuit board (PCB) side key.
图 2 为复用扬声器或听筒信号线作为内置天线的示意图。 其中， 在主 板上需要增加的部分有： 高频扼流电路、 匹配电路和射频开关。  Figure 2 is a schematic diagram of a multiplexed speaker or handset signal line as an internal antenna. Among them, the parts that need to be added on the main board are: high frequency choke circuit, matching circuit and RF switch.
射频开关可选用 PIN二级管或电控开关。 射频开关由基带模块进行控 制， 例如当采用耳机接口作为外置天线接口时， 基带模块可以检测到耳机 接口是否插入了耳机（即是否插入了外置天线）， 如果检测到耳机接口插入 了耳机， 那么基带模块输出相应信号控制射频开关为关闭状态； 如果检测 到耳机接口没有插入耳机 , 那么基带模块输出相应信号控制射频开关为打 开状态。 当无法检测到耳机接口是否插入了耳机时， 或者使用非专业射频 接口作为外置天线接口时， 例如 USB接口外置天线， 可以让用户选择是否 使用内置天线， 那么基带模块可以根据用户输入控制射频开关的打开或关 闭。  The RF switch can be either a PIN diode or an electronically controlled switch. The RF switch is controlled by the baseband module. For example, when the earphone interface is used as the external antenna interface, the baseband module can detect whether the earphone interface is inserted into the earphone (that is, whether an external antenna is inserted), and if the earphone interface is inserted into the earphone interface, Then, the baseband module outputs a corresponding signal to control the RF switch to be in a closed state; if it is detected that the earphone interface is not inserted into the earphone, the baseband module outputs a corresponding signal to control the RF switch to be in an open state. When it is not possible to detect whether the earphone interface is plugged into the earphone, or when the non-professional RF interface is used as the external antenna interface, for example, the external interface of the USB interface allows the user to select whether to use the built-in antenna, then the baseband module can control the radio frequency according to the user input. The switch is turned on or off.
为了阻隔扬声器或听筒所连接的其他电路、 如音频电路对内置天线性 能的影响， 主要是对内置天线接收的移动电视和 /或 FM信号的干扰， 增加 该高频扼流电路， 可以选用电感或者磁珠。  In order to block the influence of other circuits connected to the speaker or the earpiece, such as the audio circuit on the performance of the built-in antenna, mainly the interference of the mobile TV and/or FM signal received by the built-in antenna, the high-frequency choke circuit can be added, and the inductor or Magnetic beads.
匹配电路， 用于调节内置天线接收的移动电视和 /或 FM信号的阻抗， 使输出信号的阻抗与射频开关要求的输入信号的阻抗匹配， 以此使内置天 线性能达到最佳。  A matching circuit that adjusts the impedance of the mobile TV and/or FM signals received by the internal antenna to match the impedance of the output signal to the impedance of the input signal required by the RF switch to optimize the built-in antenna performance.
另外， 根据实际应用情形， 射频开关还可以外带偏置电路。  In addition, depending on the actual application, the RF switch can also be equipped with a bias circuit.
射频开关输出的信号由频率分配器 1 分析后， 输出给对应的移动电视 接收机或者 FM接收机。 当使用外置天线时，信号直接通过耳机接口传递到频率分配器 1 , 经分 析后， 输出给对应的移动电视接收机或者 FM接收机。 The signal output from the RF switch is analyzed by the frequency divider 1 and output to the corresponding mobile TV receiver or FM receiver. When an external antenna is used, the signal is directly transmitted to the frequency distributor 1 through the headphone interface, and after analysis, it is output to the corresponding mobile television receiver or FM receiver.
图 3为复用 GPS天线作为内置天线的示意图，该结构与图 2大致相同， 不同的是内置天线模块的构成。  Fig. 3 is a schematic view showing a multiplexed GPS antenna as a built-in antenna. The structure is substantially the same as that of Fig. 2, and the difference is the configuration of the built-in antenna module.
由于 GPS作为内置天线后， 即可以接收 GPS信号， 又可以接收移动电 视和 /或 FM信号， 因此， 为了不影响 GPS天线自身的工作， 需要对其接收 的信号进行频率分配， 根据移动电视和 /或 FM信号的频率、 GPS信号的频 率， 可以从其接收的信号中将移动电视和 /或 FM信号、 GPS信号分离。  Since GPS can be used as a built-in antenna, it can receive GPS signals and receive mobile TV and/or FM signals. Therefore, in order not to affect the operation of the GPS antenna itself, it is necessary to frequency-allocate the signals it receives, according to mobile TV and / Or the frequency of the FM signal, the frequency of the GPS signal, and the mobile TV and/or FM signal, GPS signal can be separated from the signal received by it.
为此， 在内置天线模块中增加了频率分配器 2, 如图 3所示， 频率分配 器 2将分离出的移动电视和 /或 FM信号提供给匹配电路进行阻抗调整； 将 分离出的 GPS信号传递给 GPS模块进行相应的处理。根据被复用天线的工 作频段， 可以灵活设计频率分配器 2, 可以为带阻滤波器， 或者低通滤波器 等。 比如该天线为 GPS天线， 频率分配器 2可以使用带阻滤波器， 阻带为 GPS工作频带， 而移动电视及 FM频带为通带。 如图 4所示， 频率分配器 2 中的滤波器在 GPS频段呈现高阻抗， 在移动电视及 FM频段呈现低阻抗。  To this end, a frequency splitter 2 is added to the built-in antenna module. As shown in FIG. 3, the frequency splitter 2 supplies the separated mobile TV and/or FM signals to the matching circuit for impedance adjustment; the separated GPS signals are Passed to the GPS module for corresponding processing. According to the working frequency band of the multiplexed antenna, the frequency divider 2 can be flexibly designed, and it can be a band rejection filter or a low-pass filter. For example, the antenna is a GPS antenna, the frequency divider 2 can use a band rejection filter, the stop band is a GPS operating band, and the mobile TV and FM bands are pass bands. As shown in Figure 4, the filter in frequency divider 2 exhibits high impedance in the GPS band and low impedance in the mobile TV and FM bands.
由于信号线复用不是针对移动电视及 FM频段做的优化， 因此接收的 移动电视和 /FM信号的谐振频率可能偏离标准的移动电视、 FM频段较远， 使得内置天线性能太差。  Since signal line multiplexing is not optimized for mobile TV and FM bands, the resonant frequencies of received mobile TV and /FM signals may deviate far from the standard mobile TV and FM bands, making the built-in antennas perform poorly.
为此， 可以在内置天线与射频开关之间设置低噪声放大模块构成有源 天线， 如图 5 所示。 也可以在射频开关与接收电路之间设置低噪声放大模 块构成有源天线， 如图 6所示， 这样同时也可以改善外置天线性能。 所述 的接收电路即为图 2、 图 3中按照箭头走向、 在节点 A之后的电路。  To this end, a low-noise amplifier module can be placed between the built-in antenna and the RF switch to form an active antenna, as shown in Figure 5. It is also possible to provide a low-noise amplification module between the RF switch and the receiving circuit to form an active antenna, as shown in Fig. 6, which also improves the performance of the external antenna. The receiving circuit is the circuit of Figure 2, Figure 3, which follows the arrow and follows node A.
具体的， 低噪声放大模块包括低噪放大器和连个匹配电路。 低噪放大 器用于对接收的信号进行低噪放大处理。  Specifically, the low noise amplification module includes a low noise amplifier and a matching circuit. The low noise amplifier is used to perform low noise amplification on the received signal.
如图 5 所示， 其中一个匹配电路用于接收内置天线的输出信号， 将信 号阻抗调整为与低噪放大器的输入信号阻抗匹配； 另一个匹配电路用于接 收低噪放大器的输出信号 , 将信号阻抗调整为与射频开关的输入信号阻抗 匹配。 As shown in Figure 5, one of the matching circuits is used to receive the output signal of the built-in antenna. The impedance is adjusted to match the impedance of the input signal of the low noise amplifier; another matching circuit is used to receive the output signal of the low noise amplifier, and the signal impedance is adjusted to match the impedance of the input signal of the RF switch.
如图 6所示， 其中一个匹配电路用于射频开关的输出信号， 将信号阻 抗调整为与低噪放大器的输入信号阻抗匹配； 另一个匹配电路用于接收低 噪放大器的输出信号， 将信号阻抗调整为与频率分配器的输入信号阻抗匹 配。  As shown in Figure 6, one of the matching circuits is used for the output signal of the RF switch, and the signal impedance is adjusted to match the input signal impedance of the low noise amplifier; the other matching circuit is used to receive the output signal of the low noise amplifier, and the signal impedance is Adjusted to match the input signal impedance of the frequency divider.
另外， 由于低噪放大器不能一直处于工作状态， 因此需要由基带模块 控制其打开或关闭状态， 具体的， 将其打开或关闭状态与射频开关一致即 可。 在对低噪放大器进行控制时， 如图 5、 图 6所示， 需要通过一个偏置电 路。  In addition, since the low noise amplifier cannot be always in operation, it needs to be controlled by the baseband module to be turned on or off. Specifically, the open or closed state is consistent with the RF switch. When controlling the low noise amplifier, as shown in Figure 5 and Figure 6, a bias circuit is required.
另外， 当受客观条件限制， 无法对移动终端的现有信号线进行复用时， 也可以配置专门的移动电视和 FM 内置天线， 这时电路相对简单， 只需匹 配电路及射频开关即可， 必要时也可增加低噪声放大模块构成有源天线。  In addition, when the existing signal lines of the mobile terminal cannot be multiplexed by the objective conditions, a special mobile TV and an FM built-in antenna can also be configured. In this case, the circuit is relatively simple, and only the matching circuit and the RF switch can be used. If necessary, a low-noise amplification module can also be added to form an active antenna.
结合上述实施过程， 本发明实施例提出了一种移动电视和 FM 内置天 线的实现方法， 如图 7所示， 包括如下步驟：  In conjunction with the foregoing implementation process, an embodiment of the present invention provides a method for implementing a mobile TV and an FM built-in antenna. As shown in FIG. 7, the method includes the following steps:
步驟 701 , 复用移动终端中的信号线作为移动电视和 FM内置天线， 或 者配置专门的移动电视和 FM内置天线。  Step 701: Reuse the signal line in the mobile terminal as a mobile TV and an FM built-in antenna, or configure a dedicated mobile TV and an FM built-in antenna.
步驟 702, 射频开关处于打开状态时， 移动电视和 FM内置天线接收移 动电视和 /或 FM信号。  Step 702: When the RF switch is turned on, the mobile TV and the FM built-in antenna receive the mobile TV and/or FM signal.
具体的， 本发明实施例复用的信号线可以是： 扬声器或听筒的信号线， 或者， 移动终端中能够接收信号的天线（例如 GPS天线、 WiFi天线、 柔性 PCB侧键等） 的信号线。  Specifically, the signal line multiplexed in the embodiment of the present invention may be: a signal line of a speaker or an earpiece, or a signal line of an antenna (such as a GPS antenna, a WiFi antenna, a flexible PCB side key, etc.) capable of receiving signals in the mobile terminal.
根据复用的信号线的不同， 对接收的移动电视和 /或 FM信号的干扰的 处理也不同， 有如下两种处理方式： 一、 如果复用扬声器或听筒的信号线作为移动电视和 FM 内置天线， 在接收到移动电视或 FM信号之后， 还需要通过高频扼流阻隔与扬声器或 听筒连接的电路对移动电视和 /或 FM信号的干扰。 The processing of interference on the received mobile TV and/or FM signal is also different depending on the multiplexed signal line, and there are two processing methods as follows: 1. If the signal line of the speaker or earpiece is multiplexed as the mobile TV and the FM built-in antenna, after receiving the mobile TV or FM signal, it is necessary to block the circuit connected to the speaker or the earpiece by high frequency turbulence to the mobile TV and/or Interference from FM signals.
二、 如果复用移动终端中能够接收信号的天线的信号线作为移动电视 和 FM内置天线时， 那么还需要根据移动电视和 /或 FM信号的频率， 从移 动电视和 FM内置天线接收的信号中获取移动电视和 /或 FM信号。  2. If the signal line of the antenna capable of receiving signals in the mobile terminal is multiplexed as the mobile TV and the FM built-in antenna, then it is also necessary to receive signals from the mobile TV and the FM built-in antenna according to the frequency of the mobile TV and/or FM signal. Get mobile TV and / or FM signals.
为了增强内置天线的性能， 对经过上述两种方式之一处理后的移动电 视和 /或 FM信号， 还需要进行阻抗调整， 使调整后的信号阻抗与射频开关 要求的输入信号阻抗匹配，然后通过射频开关将调整后的移动电视和 /或 FM 信号传递给移动电视接收机和 /或 FM接收机。  In order to enhance the performance of the built-in antenna, the mobile TV and/or FM signal processed by one of the above two methods is also required to perform impedance adjustment, so that the adjusted signal impedance matches the input signal impedance required by the RF switch, and then passes. The RF switch transmits the adjusted mobile TV and/or FM signal to the mobile television receiver and/or the FM receiver.
进一步地， 对移动电视或 FM信号进行阻抗调整之后， 还可以对移动 电视和 /或 FM信号进行低噪放大， 然后通过射频开关传递给移动电视接收 机和 /或 FM接收机。 也可以对射频开关输出的移动电视和 /或 FM信号进行 氐噪放大后， 传递给移动电视接收机和 /或 FM接^机。  Further, after the impedance adjustment of the mobile TV or FM signal, the mobile TV and/or FM signal can be low noise amplified and then transmitted to the mobile TV receiver and/or the FM receiver through the RF switch. The mobile TV and/or FM signals output by the RF switch can also be noise-amplified and transmitted to the mobile TV receiver and/or FM receiver.
另外， 还需对射频开关的代开或关闭状态进行控制： 当检测到移动终 端的耳机接口插入耳机时， 控制射频开关为关闭状态； 检测到耳机接口未 插入耳机时， 控制射频开关为打开状态； 或者， 也可以根据用户输入控制 射频开关的打开或关闭。  In addition, it is also necessary to control the on or off state of the RF switch: When the headphone interface of the mobile terminal is detected to be inserted into the earphone, the control RF switch is turned off; when the earphone interface is not inserted into the earphone, the control RF switch is turned on. Or, the RF switch can be turned on or off according to user input.
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。  The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

权利要求书 Claim
1、 一种移动电视和 FM内置天线的实现方法， 其中， 包括： 复用移动终端中的信号线作为移动电视和频率调制调频收音机（ FM ) 内置天线， 或者配置专门的移动电视和 FM内置天线；  A method for implementing a mobile TV and an FM built-in antenna, comprising: multiplexing a signal line in a mobile terminal as a built-in antenna for a mobile TV and a frequency modulated FM radio (FM), or configuring a dedicated mobile TV and an FM built-in antenna ;
射频开关处于打开状态时，所述移动电视和 FM内置天线接收移动电 视和 /或 FM信号。  The mobile TV and FM internal antenna receive mobile TV and/or FM signals when the RF switch is on.
2、根据权利要求 1所述移动电视和 FM内置天线的实现方法，其中， 复用移动终端中的信号线作为移动电视和 FM内置天线， 包括：  The method for implementing the mobile TV and the FM built-in antenna according to claim 1, wherein the multiplexing the signal lines in the mobile terminal as the mobile TV and the FM built-in antenna comprises:
复用扬声器或听筒的信号线作为移动电视和 FM内置天线； 或者， 复用移动终端中能够接收信号的天线的信号线作为移动电视和 FM 内置天线。  The signal line of the speaker or the earpiece is multiplexed as a mobile TV and an FM built-in antenna; or, the signal line of the antenna capable of receiving signals in the mobile terminal is multiplexed as a mobile TV and an FM built-in antenna.
3、根据权利要求 2所述移动电视和 FM内置天线的实现方法，其中， 所述复用扬声器或听筒的信号线作为移动电视和 FM 内置天线时， 在接 收到移动电视或 FM信号之后， 该方法还包括：  3. The method for implementing a mobile television and an FM built-in antenna according to claim 2, wherein when the signal line of the multiplexed speaker or the earpiece is used as a mobile TV and an FM built-in antenna, after receiving the mobile television or FM signal, The method also includes:
通过高频扼流阻隔与所述扬声器或听筒连接的电路对所述移动电视 和 /或 FM信号的干扰。  Interference with the mobile television and/or FM signals by high frequency turbulence blocking circuitry connected to the speaker or earpiece.
4、根据权利要求 2所述移动电视和 FM内置天线的实现方法，其中， 所述复用移动终端中能够接收信号的天线的信号线作为移动电视和 FM 内置天线时， 该方法还包括：  The method for implementing the mobile TV and the FM built-in antenna according to claim 2, wherein when the signal line of the antenna capable of receiving the signal in the mobile terminal is used as the mobile TV and the FM built-in antenna, the method further includes:
根据移动电视和 /或 FM信号的频率， 从移动电视和 FM内置天线接 收的信号中获取移动电视和 /或 FM信号。  Mobile TV and/or FM signals are obtained from signals received by mobile TV and FM internal antennas based on the frequency of the mobile TV and/or FM signals.
5、 根据权利要求 1、 2、 3或 4所述移动电视和 FM内置天线的实现 方法， 其中， 接收到移动电视和 /或 FM信号后， 该方法还包括：  The method for implementing the mobile TV and the FM built-in antenna according to claim 1, 2, 3 or 4, wherein after receiving the mobile TV and/or FM signal, the method further comprises:
对所述接收到的移动电视和 /或 FM信号进行阻抗调整， 使信号阻抗 与所述射频开关要求的信号阻抗匹配， 并通过射频开关将调整后的移动 电视和 /或 FM信号传递给移动电视接收机和 /或 FM接收机。 Performing impedance adjustment on the received mobile TV and/or FM signal, matching the signal impedance with the signal impedance required by the RF switch, and adjusting the adjusted movement through the RF switch The television and/or FM signals are passed to the mobile television receiver and/or the FM receiver.
6、根据权利要求 5所述移动电视和 FM内置天线的实现方法，其中， 对所述接收到的移动电视或 FM信号进行阻抗调整之后， 该方法还包括： 对调整后的移动电视和 /或 FM信号进行低噪放大， 并通过射频开关传递 给移动电视接收机和 /或 FM接^机。  6. The method for implementing a mobile television and an FM internal antenna according to claim 5, wherein after performing impedance adjustment on the received mobile television or FM signal, the method further comprises: adjusting the adjusted mobile television and/or The FM signal is low noise amplified and transmitted to the mobile TV receiver and/or the FM receiver via the RF switch.
7、根据权利要求 5所述移动电视和 FM内置天线的实现方法，其中， 该方法还包括：对射频开关输出的移动电视和 /或 FM信号进行低噪放大， 并传递给移动电视接收机和 /或 FM接收机。  7. The method for implementing a mobile television and an FM internal antenna according to claim 5, wherein the method further comprises: performing low noise amplification on the mobile television and/or FM signal output by the radio frequency switch, and transmitting the same to the mobile television receiver and / or FM receiver.
8、 根据权利要求 6或 7所述移动电视和 FM内置天线的实现方法， 其中， 该方法还包括： 检测到移动终端的插入外置天线时， 控制所述射 频开关为关闭状态； 检测到所述耳机接口未插入外置天线时， 控制所述 射频开关为打开状态； 或者，  The method for implementing the mobile TV and the FM built-in antenna according to claim 6 or 7, wherein the method further comprises: detecting that the radio frequency switch is turned off when the external antenna is inserted into the mobile terminal; When the earphone interface is not inserted into the external antenna, the radio switch is controlled to be turned on; or
根据用户输入控制所述射频开关的打开或关闭。  The opening or closing of the radio frequency switch is controlled according to user input.
9、 一种移动电视和 FM内置天线的实现装置， 其中， 包括： 内置天 线模块和射频开关； 其中：  9. An implementation device for a mobile TV and an FM built-in antenna, comprising: a built-in antenna module and an RF switch; wherein:
所述内置天线模块包括内置天线； 所述内置天线为移动终端中的信 号线， 或专门的移动电视和 FM内置天线；  The built-in antenna module includes a built-in antenna; the built-in antenna is a signal line in a mobile terminal, or a dedicated mobile TV and an FM built-in antenna;
所述内置天线， 设置为在所述射频开关处于打开状态时， 接收移动 电视和 /或 FM信号。  The internal antenna is configured to receive a mobile television and/or FM signal when the radio frequency switch is in an open state.
10、根据权利要求 9所述移动电视和 FM内置天线的实现装置，其中， 所述信号线为扬声器或听筒的信号线， 或者移动终端中能够接收信号的 天线的信号线。  The apparatus for realizing a mobile television and an FM built-in antenna according to claim 9, wherein the signal line is a signal line of a speaker or an earpiece, or a signal line of an antenna capable of receiving a signal in the mobile terminal.
11、 根据权利要求 10所述移动电视和 FM内置天线的实现装置， 其 中， 所述信号线为扬声器或听筒的信号线时， 所述内置天线模块还包括： 高频扼流电路， 设置为阻隔与所述扬声器或听筒连接的电路对所述 内置天线接收的移动电视和 /或 FM信号的干扰。 The device for implementing the mobile TV and the FM built-in antenna according to claim 10, wherein, when the signal line is a signal line of a speaker or an earpiece, the built-in antenna module further includes: a high frequency choke circuit, configured to block a circuit connected to the speaker or earpiece Interference from mobile TV and/or FM signals received by the built-in antenna.
12、 根据权利要求 10所述移动电视和 FM内置天线的实现装置， 其 中， 所述信号线为移动终端中能够接收信号的天线的信号线时， 所述内 置天线模块还包括：  The device for implementing the mobile TV and the FM built-in antenna according to claim 10, wherein, when the signal line is a signal line of an antenna capable of receiving a signal in the mobile terminal, the internal antenna module further includes:
频率分配器， 设置为根据移动电视和 /或 FM信号的频率， 从所述内 置天线接收的信号中获取移动电视和 /或 FM信号。  A frequency divider is arranged to obtain a mobile television and/or FM signal from signals received by said internal antenna based on the frequency of the mobile television and/or FM signals.
13、 根据权利要求 9、 10、 11或 12所述移动电视和 FM内置天线的 实现装置， 其中， 所述内置天线模块还包括： 匹配电路， 设置为对所述 内置天线接收到的移动电视和 /或 FM信号进行阻抗调整， 使信号阻抗与 所述射频开关要求的信号阻抗匹配；  The implementation device of the mobile TV and the FM built-in antenna according to claim 9, 10, 11 or 12, wherein the built-in antenna module further comprises: a matching circuit, configured to receive the mobile TV and the built-in antenna / or FM signal for impedance adjustment, matching the signal impedance with the signal impedance required by the RF switch;
所述射频开关， 还设置为将调整后的移动电视和 /或 FM信号传递给 移动电视接收机和 /或 FM接^机。  The radio frequency switch is further configured to communicate the adjusted mobile television and/or FM signals to the mobile television receiver and/or the FM transmitter.
14、 根据权利要求 13所述移动电视和 FM内置天线的实现装置， 其 中， 该装置还包括： 低噪放大模块， 设置为对所述匹配电路调整后的移 动电视和 /或 FM信号进行低噪放大； 或者， 设置为对所述射频开关输出 的移动电视和 /或 FM信号进行低噪放大。  14. The apparatus for implementing a mobile television and an FM internal antenna according to claim 13, wherein the apparatus further comprises: a low noise amplification module configured to perform low noise on the adjusted mobile TV and/or FM signal of the matching circuit Zooming in; or, setting to perform low noise amplification on the mobile TV and/or FM signals output by the radio frequency switch.
15、 根据权利要求 14所述移动电视和 FM内置天线的实现装置， 其 中， 该装置还包括： 基带模块， 设置为控制所述射频开关的打开或关闭， 还设置为控制所述低噪放大模块的打开或关闭。  The device for implementing the mobile TV and the FM built-in antenna according to claim 14, wherein the device further comprises: a baseband module configured to control opening or closing of the radio frequency switch, and further configured to control the low noise amplification module Turn it on or off.
16、 根据权利要求 15所述移动电视和 FM内置天线的实现装置， 其 中， 所述基带模块， 还设置为检测到移动终端插入外置天线时， 控制所 述射频开关为关闭状态； 检测到所述移动终端未插入外置天线时， 控制 所述射频开关为打开状态； 或者， 根据用户输入控制所述射频开关的打 开或关闭； 还设置为控制所述低噪放大模块的打开或关闭与所述射频开 关一致。  The apparatus for implementing the mobile TV and the FM built-in antenna according to claim 15, wherein the baseband module is further configured to: when the mobile terminal is inserted into the external antenna, control the radio frequency switch to be in a closed state; When the mobile terminal is not inserted into the external antenna, the RF switch is controlled to be in an open state; or, the RF switch is turned on or off according to a user input; and is further configured to control the opening or closing of the low noise amplification module The RF switches are consistent.
PCT/CN2012/074681 2011-12-31 2012-04-25 Method and device for implementing built-in antenna of mobile television and fm radio WO2013097389A1 (en)

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CN107346983A (en) * 2017-06-28 2017-11-14 广东欧珀移动通信有限公司 A kind of compatible built-in and external antenna mobile terminal
CN110828975B (en) * 2018-08-07 2021-09-07 北京小米移动软件有限公司 Electronic device

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