WO2023024853A1 - Radio frequency circuit and radio frequency signal transmission method - Google Patents
Radio frequency circuit and radio frequency signal transmission method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—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
- H04B1/0067—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 one or more circuit blocks in common for different bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The present invention relates to the field of radio frequency, and in particular to a radio frequency circuit and a radio frequency signal transmission method. The radio frequency circuit comprises a preprocessing unit, a frequency band switching unit, a control unit, a filtering unit, and a main set antenna. The filtering unit comprises at least one trap. The at least one trap is located between the frequency band switching unit and the main set antenna. The control unit is connected to the frequency band switching unit and the at least one trap, respectively. The frequency band switching unit is used for determining a working frequency band of the radio frequency signal output by the preprocessing unit. The control unit is used for determining a target trap according to the working frequency band of the radio frequency signal, and controlling the target trap to connect the frequency band switching unit to the main set antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main set antenna through the target trap. According to the radio frequency circuit and the radio frequency signal transmission method provided by the embodiments of the present invention, the problem that the second harmonic of B13 is non-linearly amplified when passing through the frequency band switching unit and thus causes interference to GPS can be solved.
Description
本申请要求于2021年08月23日提交中国专利局、申请号为202110970029.2、申请名称为“一种射频电路和射频信号传输方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202110970029.2 and the application title "A radio frequency circuit and radio frequency signal transmission method" submitted to the China Patent Office on August 23, 2021, the entire contents of which are incorporated herein by reference Applying.
本申请涉及涉及射频领域，尤其涉及一种射频电路和射频信号传输方法。The present application relates to the radio frequency field, and in particular to a radio frequency circuit and a radio frequency signal transmission method.
B13频段为777-787MHz，终端在发射B13频段的信号时，B13频段的信号在经过功率放大器(Power Amplifier，PA)等器件时，会产生频率为1554-1574MHz的二次谐波。由于B13的二次谐波与全球定位系统(Global Positioning System，GPS)GPS的工作频率(1575.42±1.023MHz)非常接近，因此需要降低B13的二次谐波对GPS的干扰。The B13 frequency band is 777-787MHz. When the terminal transmits the B13 frequency band signal, the B13 frequency band signal will generate a second harmonic with a frequency of 1554-1574MHz when it passes through a power amplifier (Power Amplifier, PA) and other devices. Since the second harmonic of B13 is very close to the operating frequency (1575.42±1.023MHz) of the Global Positioning System (GPS) GPS, it is necessary to reduce the interference of the second harmonic of B13 to GPS.
目前，降低B13的二次谐波对GPS的干扰的方法为：在B13射频通路上的双工器(Duplexer，DUP)和频段切换单元之间增加低通滤波器(Low Pass Filter，LPF)，以通过LPF滤除B13的二次谐波。但是，LPF可能无法完全滤除B13的二次谐波，未滤除的二次谐波仍会对GPS产生干扰。At present, the method to reduce the interference of the second harmonic of B13 to GPS is to add a low pass filter (Low Pass Filter, LPF) between the duplexer (Duplexer, DUP) and the frequency band switching unit on the B13 radio frequency path, To filter out the second harmonic of B13 by LPF. However, the LPF may not completely filter out the second harmonic of B13, and the unfiltered second harmonic will still interfere with GPS.
发明内容Contents of the invention
有鉴于此，本发明实施例提供了一种射频电路和射频信号传输方法，可以解决B13的二次谐波在经过频段切换单元时被非线性放大，进而对GPS产生干扰的问题。In view of this, the embodiment of the present invention provides a radio frequency circuit and a radio frequency signal transmission method, which can solve the problem that the second harmonic of B13 is nonlinearly amplified when passing through the frequency band switching unit, thereby causing interference to GPS.
第一方面，本发明实施例提供了一种射频电路，包括：预处理单元、频段切换单元、控制单元、滤波单元和主集天线，其中，所述滤波单元包括至少一个陷 波器，所述至少一个陷波器位于所述频段切换单元和所述主集天线之间；所述控制单元分别与所述频段切换单元以及所述至少一个陷波器连接；In the first aspect, an embodiment of the present invention provides a radio frequency circuit, including: a preprocessing unit, a frequency band switching unit, a control unit, a filtering unit, and a main set antenna, wherein the filtering unit includes at least one notch filter, and the At least one wave notch is located between the frequency band switching unit and the main antenna; the control unit is connected to the frequency band switching unit and the at least one wave notch respectively;
所述频段切换单元，用于确定所述预处理单元输出的射频信号的工作频段；The frequency band switching unit is configured to determine the working frequency band of the radio frequency signal output by the preprocessing unit;
所述控制单元，用于根据所述射频信号的工作频段，从所述至少一个陷波器中确定目标陷波器，并控制所述目标陷波器接通所述频段切换单元与所述主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线。The control unit is configured to determine a target wave notch from the at least one wave notch according to the working frequency band of the radio frequency signal, and control the target wave notch to connect the frequency band switching unit and the main An integrated antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main integrated antenna through the target wave notch filter.
其中一种可能的实现方式中，所述滤波单元包括：第一陷波器和第一直通通路；In one of the possible implementation manners, the filtering unit includes: a first notch filter and a first through path;
当射频信号的工作频段为B13频段时，所述控制单元控制所述第一陷波器接通所述频段切换单元与所述主集天线，以使射频信号通过所述第一陷波器传输至主集天线；When the working frequency band of the radio frequency signal is the B13 frequency band, the control unit controls the first wave trap to connect the frequency band switching unit and the main set antenna, so that the radio frequency signal is transmitted through the first wave trap to the main set antenna;
当射频信号的工作频段为非B13频段时，所述控制单元控制所述第一直通通路接通所述频段切换单元与所述主集天线，以使射频信号通过所述第一直通通路传输至主集天线。When the working frequency band of the radio frequency signal is a non-B13 frequency band, the control unit controls the first direct path to connect the frequency band switching unit and the main set antenna, so that the radio frequency signal passes through the first direct path transmitted to the main set antenna.
其中一种可能的实现方式中，所述滤波单元，还包括：第一切换开关，In one possible implementation manner, the filtering unit further includes: a first switch,
所述第一陷波器和所述第一直通通路的输入端并联于所述频段切换单元的输出端；The input ends of the first notch filter and the first direct path are connected in parallel to the output end of the frequency band switching unit;
所述第一陷波器和所述第一直通通路的输出端通过所述第一切换开关与所述主集天线连接；The output ends of the first wave trap and the first direct path are connected to the main antenna through the first switch;
所述控制单元分别与所述频段切换单元和所述第一切换开关连接；The control unit is respectively connected to the frequency band switching unit and the first switch;
所述控制单元，通过控制所述第一切换开关控制所述第一陷波器或者所述第一直通通路与所述主集天线接通。The control unit controls the first wave trap or the first direct path to be connected to the main antenna by controlling the first switch.
其中一种可能的实现方式中，In one of the possible implementations,
所述第一切换开关包括第一开关端子、第二开关端子和开关控制端；The first changeover switch includes a first switch terminal, a second switch terminal and a switch control terminal;
所述第一陷波器和所述第一直通通路的输出端分别与所述第一开关端子和所述第二开关端子连接；所述第一开关端子和所述第二开关端子在所述开关控制端的控制下与所述主集天线接通；所述控制单元与所述开关控制端连接；The output ends of the first wave trap and the first direct path are respectively connected to the first switch terminal and the second switch terminal; the first switch terminal and the second switch terminal are connected to the connected to the main antenna under the control of the switch control terminal; the control unit is connected to the switch control terminal;
所述控制单元，通过控制所述开关控制端控制所述第一开关端子或者所述第二开关端子与所述主集天线接通。The control unit controls the switch control terminal to control the first switch terminal or the second switch terminal to be connected to the main antenna.
其中一种可能的实现方式中，所述预处理单元，包括：射频收发器、功率放大器和双工器；In one possible implementation manner, the preprocessing unit includes: a radio frequency transceiver, a power amplifier, and a duplexer;
所述射频收发器，用于生成射频信号，并将生成的射频信号发送至所述功率放大器；The radio frequency transceiver is used to generate a radio frequency signal and send the generated radio frequency signal to the power amplifier;
所述功率放大器，用于对射频信号的功率进行放大，并将经过功率放大的射频信号发送至所述双工器；The power amplifier is used to amplify the power of the radio frequency signal, and send the power amplified radio frequency signal to the duplexer;
所述双工器，用于将从所述功率放大器接收的射频信号发送至所述频段切换单元。The duplexer is configured to send the radio frequency signal received from the power amplifier to the frequency band switching unit.
第二方面，本发明实施例一种射频信号传输方法，所述方法应用于第一方面所述的射频电路，所述射频电路包括控制单元，所述控制单元执行所述射频信号传输方法，包括：In the second aspect, the embodiment of the present invention is a radio frequency signal transmission method, the method is applied to the radio frequency circuit described in the first aspect, the radio frequency circuit includes a control unit, and the control unit executes the radio frequency signal transmission method, including :
确定频段切换单元选择的射频信号的工作频段；Determine the working frequency band of the radio frequency signal selected by the frequency band switching unit;
根据所述射频信号的工作频段，从滤波单元包含的至少一个陷波器中确定目标陷波器；determining a target notch filter from at least one notch filter included in the filtering unit according to the working frequency band of the radio frequency signal;
控制所述目标陷波器接通所述频段切换单元与主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线。Controlling the target wave trap to connect the frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap.
其中一种可能的实现方式中，所述滤波单元，包括：第一陷波器和第一直通通路；In one of the possible implementation manners, the filtering unit includes: a first notch filter and a first through path;
根据所述射频信号的工作频段，从滤波单元包含的至少一个陷波器中确定目标陷波器，包括：According to the working frequency band of the radio frequency signal, the target notch filter is determined from at least one notch filter included in the filtering unit, including:
当射频信号的工作频段为B13频段时，将所述第一陷波器确定为所述目标陷波器；When the working frequency band of the radio frequency signal is the B13 frequency band, determining the first notch filter as the target notch filter;
当射频信号的工作频段为非B13频段时，将所述第一直通通路确定为所述目标陷波器。When the working frequency band of the radio frequency signal is a non-B13 frequency band, the first direct path is determined as the target wave notch filter.
其中一种可能的实现方式中，所述滤波单元，还包括：第一切换开关，所述第一陷波器和第一直通通路通过所述第一切换开关与所述主集天线连接；In one possible implementation manner, the filtering unit further includes: a first switch, the first trap and the first through path are connected to the main antenna through the first switch;
控制所述目标陷波器接通所述频段切换单元与主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线，包括：Controlling the target wave trap to connect the frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap, including:
当所述第一陷波器为所述目标陷波器时，控制所述第一切换开关接通所述第一陷波器与所述主集天线的连接；When the first wave trap is the target wave trap, controlling the first switch to connect the first wave trap to the main antenna;
当所述第一直通通路为所述目标陷波器时，控制所述第一切换开关接通所述第一直通通路与所述主集天线的连接。When the first direct path is the target wave trap, the first switch is controlled to connect the first direct path to the main antenna.
第三方面，一种射频芯片，包括：In a third aspect, a radio frequency chip includes:
至少一个处理器；以及at least one processor; and
与所述处理器通信连接的至少一个存储器，其中：at least one memory communicatively coupled to the processor, wherein:
所述处理器，其用于执行存储在所述存储器中的计算机程序指令，其中，当该计算机程序指令被所述处理器执行时，触发所述射频芯片执行如第二方面所述的方法The processor is configured to execute computer program instructions stored in the memory, wherein when the computer program instructions are executed by the processor, the radio frequency chip is triggered to execute the method as described in the second aspect
第四方面，本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行第一方面所述的方法。In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the first method described in the aspect.
应当理解的是，本发明实施例的第二～第四方面与本发明实施例的第一方面的技术方案一致，各方面及对应的可行实施方式所取得的有益效果相似，不再赘述。It should be understood that the second to fourth aspects of the embodiments of the present invention are consistent with the technical solutions of the first aspect of the embodiments of the present invention, and the beneficial effects obtained by each aspect and the corresponding feasible implementation manners are similar, so details are not repeated here.
发明实施例提供的射频电路和射频信号传输方法，可以解决B13的二次谐波 在经过频段切换单元时被非线性放大，进而对GPS产生干扰的问题。The radio frequency circuit and radio frequency signal transmission method provided by the embodiments of the invention can solve the problem that the second harmonic of B13 is nonlinearly amplified when passing through the frequency band switching unit, thereby causing interference to GPS.
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.
图1为本发明实施例提供的一种射频电路的示意图；FIG. 1 is a schematic diagram of a radio frequency circuit provided by an embodiment of the present invention;
图2为本发明实施例提供的另一种射频电路的示意图；FIG. 2 is a schematic diagram of another radio frequency circuit provided by an embodiment of the present invention;
图3为本发明实施例提供的一种射频信号传输方法的流程图；FIG. 3 is a flowchart of a radio frequency signal transmission method provided by an embodiment of the present invention;
图4为本发明实施例提供的一种射频芯片的结构示意图。FIG. 4 is a schematic structural diagram of a radio frequency chip provided by an embodiment of the present invention.
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
应当明确，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，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.
在现有技术中，通常通过在B13射频通路上的DUP和频段切换单元之间增加LPF的方式滤除B13的二次谐波。但是，LPF可能无法完全滤除B13的二次谐波，未滤除的二次谐波在经过频段切换单元时存在被非线性放大，进而对GPS产生干扰的风险。发明实施例提供的射频电路和射频信号传输方法，通过在频段切换单元和主集天线之间增加控制单元和滤波单元的方法，解决了B13的二次谐波在经过频段切换单元时被非线性放大，进而对GPS产生干扰的问题。In the prior art, the second harmonic of B13 is usually filtered out by adding an LPF between the DUP on the B13 radio frequency path and the frequency band switching unit. However, the LPF may not be able to completely filter the second harmonic of B13, and the unfiltered second harmonic may be nonlinearly amplified when passing through the frequency band switching unit, thereby causing the risk of interference to GPS. The radio frequency circuit and the radio frequency signal transmission method provided by the embodiment of the invention solve the problem that the second harmonic of B13 is nonlinearly transmitted through the frequency band switching unit by adding a control unit and a filtering unit between the frequency band switching unit and the main antenna. Amplification, and then the problem of interference to GPS.
图1为本发明实施例提供的一种射频电路。如图1所示，上述射频电路可以包括：预处理单元11、频段切换单元12、控制单元13、滤波单元14和主集天线15。Fig. 1 is a radio frequency circuit provided by an embodiment of the present invention. As shown in FIG. 1 , the radio frequency circuit may include: a preprocessing unit 11 , a frequency band switching unit 12 , a control unit 13 , a filtering unit 14 and a main set antenna 15 .
其中，滤波单元14包括陷波器1……陷波器n在内的n个陷波器(n≥1)，即滤波单元包括至少一个陷波器，所述至少一个陷波器位于所述频段切换单元和所述主集天线之间；控制单元分别与频段切换单元以及所述至少一个陷波器连接。Wherein, the filter unit 14 includes n notch filters (n≥1) including notch filter 1 ... notch filter n, that is, the filter unit includes at least one notch filter, and the at least one notch filter is located at the Between the frequency band switching unit and the main antenna; the control unit is respectively connected to the frequency band switching unit and the at least one trap.
频段切换单元12，用于确定预处理单元11输出的射频信号的工作频段。The frequency band switching unit 12 is configured to determine the working frequency band of the radio frequency signal output by the preprocessing unit 11 .
控制单元13，用于根据射频信号的工作频段，从所述至少一个陷波器中确定目标陷波器，并控制目标陷波器接通频段切换单元与主集天线，以使频段切换单元输出的射频信号经过目标陷波器传输至主集天线。The control unit 13 is used to determine the target wave trap from the at least one wave trap according to the working frequency band of the radio frequency signal, and control the target wave trap to connect the frequency band switching unit and the main set antenna, so that the frequency band switching unit outputs The radio frequency signal is transmitted to the main set antenna through the target notch filter.
具体地，如图2所示，预处理单元11包括射频收发器21、功率放大器22和双工器23。射频收发器21，用于生成射频信号，并将生成的射频信号发送至功率放大器22；功率放大器22，用于对射频信号的功率进行放大，并将经过功率放大的射频信号发送至双工器23；双工器23，用于将从功率放大器22接收的射频信号发送至频段切换单元12。Specifically, as shown in FIG. 2 , the preprocessing unit 11 includes a radio frequency transceiver 21 , a power amplifier 22 and a duplexer 23 . The radio frequency transceiver 21 is used to generate a radio frequency signal and send the generated radio frequency signal to the power amplifier 22; the power amplifier 22 is used to amplify the power of the radio frequency signal and send the power amplified radio frequency signal to the duplexer 23 ; the duplexer 23 is configured to send the radio frequency signal received from the power amplifier 22 to the frequency band switching unit 12 .
频段切换单元12，用于确定预处理单元输出的射频信号的工作频段。需要说明的是，本发明实施例提供的射频电路可以应用于手机等终端，而终端往往能够发射多个工作频段的射频信号，因此，频段切换单元需要对射频信号的工作频段进行选择，从而使射频电路将射频信号以被选中的工作频段发射出去。The frequency band switching unit 12 is configured to determine the working frequency band of the radio frequency signal output by the preprocessing unit. It should be noted that the radio frequency circuit provided by the embodiment of the present invention can be applied to terminals such as mobile phones, and the terminal can often transmit radio frequency signals of multiple working frequency bands. Therefore, the frequency band switching unit needs to select the working frequency band of the radio frequency signal, so that The radio frequency circuit transmits the radio frequency signal in the selected working frequency band.
频段切换单元可以包括多个开关端子和一个开关控制端。其中，每个开关端子对应着一个工作频段，当开关控制端与某个开关端子连接时，频段切换单元也就完成了对工作频段的选择。另外，射频切换单元还具有功率放大的功能，因此，当B13的二次谐波经过射频切换单元时，存在被非线性放大的风险。The frequency band switching unit may include multiple switch terminals and a switch control terminal. Wherein, each switch terminal corresponds to a working frequency band, and when the switch control terminal is connected to a certain switch terminal, the frequency band switching unit completes the selection of the working frequency band. In addition, the radio frequency switching unit also has the function of power amplification, so when the second harmonic of B13 passes through the radio frequency switching unit, there is a risk of being amplified nonlinearly.
滤波单元14可以包括至少一个陷波器，所述至少一个陷波器位于频段切换单元和主集天线之间。其中，陷波器可以用于滤除射频信号的二次谐波。The filtering unit 14 may include at least one notch filter, and the at least one notch filter is located between the frequency band switching unit and the main set antenna. Among them, the notch filter can be used to filter out the second harmonic of the radio frequency signal.
控制单元13分别与频段切换单元以及滤波单元中的至少一个陷波器连接，用于根据射频信号的工作频段，从至少一个陷波器中确定目标陷波器，并控制目标陷波器接通频段切换单元与主集天线，以使频段切换单元输出的射频信号经过目标陷波器传输至主集天线。The control unit 13 is respectively connected with at least one notch filter in the frequency band switching unit and the filter unit, and is used to determine the target notch filter from at least one notch filter according to the working frequency band of the radio frequency signal, and control the target notch filter to be turned on The frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap.
主集天线15，用于将射频信号发射出去。The main antenna 15 is used to transmit radio frequency signals.
在一个具体示例中，如图2所示，滤波单元14包括：第一陷波器24、第一直通通路25和第一切换开关26。第一陷波器和第一直通通路的输入端并联于频段切换单元的输出端。In a specific example, as shown in FIG. 2 , the filter unit 14 includes: a first notch filter 24 , a first direct path 25 and a first switch 26 . The input ends of the first notch filter and the first direct path are connected in parallel with the output end of the frequency band switching unit.
其中，第一切换开关26又包括：第一开关端子31、第二开关端子32和开关控制端33。第一陷波器24和第一直通通路25分别与第一开关端子31和第二开关端子32连接；第一开关端子和第二开关端子可以在开关控制端的控制下与主集天线15接通。Wherein, the first switch 26 further includes: a first switch terminal 31 , a second switch terminal 32 and a switch control terminal 33 . The first wave trap 24 and the first direct path 25 are respectively connected with the first switch terminal 31 and the second switch terminal 32; the first switch terminal and the second switch terminal can be connected with the main set antenna 15 under the control of the switch control terminal Pass.
控制单元13，分别与频段切换单元12和开关控制端33连接。控制单元可以对频段切换单元输出的射频信号的工作频段进行检测，从而确定频段切换单元选择的射频信号的工作频段。当射频信号的工作频段为B13频段时，控制单元通过控制开关控制端，令第一开关端子与主集天线接通，以使射频信号通过第一陷波器传输至主集天线，其中，第一陷波器用于滤除B13的二次谐波；当射频信号的工作频段为非B13频段时，控制单元通过控制开关控制端，令第二开关端子与主集天线接通，以使射频信号通过第一直通通路传输至主集天线。The control unit 13 is connected to the frequency band switching unit 12 and the switch control terminal 33 respectively. The control unit can detect the working frequency band of the radio frequency signal output by the frequency band switching unit, so as to determine the working frequency band of the radio frequency signal selected by the frequency band switching unit. When the working frequency band of the radio frequency signal is the B13 frequency band, the control unit controls the switch control terminal to connect the first switch terminal to the main antenna, so that the radio frequency signal is transmitted to the main antenna through the first wave trap, wherein, the first A notch filter is used to filter out the second harmonic of B13; when the working frequency band of the radio frequency signal is a non-B13 frequency band, the control unit controls the switch control terminal to connect the second switch terminal with the main set antenna, so that the radio frequency signal It is transmitted to the main set antenna through the first through path.
本发明实施例在频段切换单元和主集天线之间增加控制单元和滤波单元，其中，滤波单元包括第一陷波器、第一直通通路和第一切换开关。控制单元能够确定射频信号的工作频段是否为B13频段，如果射频信号的工作频段为B13频段，则控制第一切换开关连接第一陷波器和主集天线；否则，控制第一切换开关连接第一直通通路和主集天线。本发明实施例提供的射频电路，能够解决B13的二次谐波在经过频段切换单元时被非线性放大，进而对GPS产生干扰的问题。In the embodiment of the present invention, a control unit and a filtering unit are added between the frequency band switching unit and the main antenna, wherein the filtering unit includes a first notch filter, a first direct path and a first switching switch. The control unit can determine whether the working frequency band of the radio frequency signal is the B13 frequency band, if the working frequency band of the radio frequency signal is the B13 frequency band, then control the first switch to connect the first wave trap and the main antenna; otherwise, control the first switch to connect the first Straight through access and main set antenna. The radio frequency circuit provided by the embodiment of the present invention can solve the problem that the second harmonic of B13 is nonlinearly amplified when passing through the frequency band switching unit, thereby causing interference to GPS.
另外，当滤波单元14包括多个陷波器时和一个切换开关时，各个陷波器的输入端并联于频段切换单元的输出端，各个陷波器的输出端可以通过该切换开关与主集天线连接。控制单元分别与频段切换单元和该切换开关连接。其中，滤波单元中的各个陷波器，可以分别用于对不同工作频段的射频信号的二次谐波进行滤波。控制单元可以根据射频信号的工作频段，选择与该工作频段对应的目标陷波器；通过控制切换开关的方式，使目标陷波器的输出端与主集天线相连。此时，目标陷波器可以对该工作频段的射频信号的二次谐波进行滤波，以使主集天线将滤除二次谐波的射频信号发射出去。In addition, when the filtering unit 14 includes a plurality of notch filters and a switching switch, the input ends of each notch filter are connected in parallel to the output ends of the frequency band switching unit, and the output ends of each notch filter can be connected to the main set through the switch. Antenna connection. The control unit is respectively connected with the frequency band switching unit and the switching switch. Wherein, each notch filter in the filter unit can be used to filter the second harmonic of radio frequency signals in different working frequency bands respectively. The control unit can select the target wave notch filter corresponding to the working frequency band according to the working frequency band of the radio frequency signal; the output terminal of the target wave notch filter is connected to the main set antenna by controlling the switch. At this time, the target notch filter can filter the second harmonic of the radio frequency signal in the working frequency band, so that the main set antenna can transmit the radio frequency signal from which the second harmonic has been filtered.
图3为本发明实施例提供的一种射频信号传输方法的流程图，所述方法应用于图2所示的射频电路，图2所示射频电路包括控制单元13，控制单元13执行图3所示的射频信号传输方法。如图3所示，上述射频信号传输方法包括：Fig. 3 is a flow chart of a radio frequency signal transmission method provided by an embodiment of the present invention, the method is applied to the radio frequency circuit shown in Fig. 2, and the radio frequency circuit shown in Fig. The radio frequency signal transmission method shown. As shown in Figure 3, the above radio frequency signal transmission method includes:
步骤101，确定频段切换单元选择的射频信号的工作频段。 Step 101, determine the working frequency band of the radio frequency signal selected by the frequency band switching unit.
具体地，控制单元可以对由频段切换单元输出的射频信号的工作频段进行检测，从而确定射频信号的工作频段。Specifically, the control unit can detect the working frequency band of the radio frequency signal output by the frequency band switching unit, so as to determine the working frequency band of the radio frequency signal.
确定射频信号的工作频段之后，继续执行步骤102。After the working frequency band of the radio frequency signal is determined, step 102 is continued.
步骤102，根据所述射频信号的工作频段，从滤波单元包含的至少一个陷波器中确定目标陷波器。Step 102: Determine a target notch filter from at least one notch filter included in the filtering unit according to the working frequency band of the radio frequency signal.
需要说明的是，滤波单元中可能包含多个陷波器，各个陷波器的输入端均并联于频段切换单元的输出端，其中，各个陷波器可以分别用于对不同频段的射频信号的二次谐波进行过滤。此时，控制单元需要根据射频信号的工作频段，选择对应的目标陷波器。It should be noted that the filter unit may contain a plurality of notch filters, and the input ends of each notch filter are connected in parallel to the output end of the frequency band switching unit, wherein each notch filter can be used to filter radio frequency signals of different frequency bands respectively. The second harmonic is filtered. At this time, the control unit needs to select the corresponding target notch filter according to the working frequency band of the radio frequency signal.
在一个如图2所示的具体示例中，如果射频信号的工作频段为B13频段，则将第一陷波器确定为目标陷波器；如果射频信号的工作频段非B13频段，控制单元选择第一直通通路。In a specific example as shown in Figure 2, if the working frequency band of the radio frequency signal is the B13 frequency band, the first notch filter is determined as the target notch filter; if the working frequency band of the radio frequency signal is not the B13 frequency band, the control unit selects the first notch filter All the way through.
确定目标陷波器之后，继续执行步骤103。After the target notch filter is determined, continue to execute step 103 .
步骤103，控制目标陷波器接通频段切换单元与主集天线，以使频段切换单元输出的射频信号经过目标陷波器传输至主集天线。 Step 103, controlling the target wave trap to connect the frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap.
需要说明的是，滤波模块还包括第一切换开关，控制单元分别与频段切换单元和第一切换开关连接。在确定目标陷波器之后，控制单元可以通过控制第一切换开关，使目标陷波器通过第一切换开关与主集天线连接，以使频段切换单元输出的射频信号经过目标陷波器传输至主集天线。射频信号在经过目标陷波器时，目标陷波器可以滤除射频信号中的二次谐波，从而解决二次谐波在经过频段选择单元时被非线性放大，对GPS信号产生干扰的问题。It should be noted that the filtering module further includes a first switch, and the control unit is connected to the frequency band switching unit and the first switch respectively. After determining the target wave trap, the control unit can control the first switch to connect the target wave trap to the main antenna through the first switch, so that the radio frequency signal output by the frequency band switching unit is transmitted to the target wave trap through the target wave trap. Main set antenna. When the radio frequency signal passes through the target notch filter, the target notch filter can filter out the second harmonic in the radio frequency signal, thereby solving the problem that the second harmonic is nonlinearly amplified when passing through the frequency band selection unit and interferes with the GPS signal .
在一个如图2所示的具体示例中，第一切换开关还包括第一开关端子、第二开关端子和开关控制端。第一陷波器的输出端与第一开关端子连接；第一直通通路的输出端与第二开关端子连接；第一开关端子和第二开关端子可以在开关控制端的控制下与主集天线连接；控制单元与开关控制端连接。In a specific example as shown in FIG. 2 , the first switch further includes a first switch terminal, a second switch terminal and a switch control terminal. The output end of the first trap is connected to the first switch terminal; the output end of the first direct path is connected to the second switch terminal; the first switch terminal and the second switch terminal can be connected to the main antenna under the control of the switch control terminal connection; the control unit is connected with the switch control terminal.
如果目标陷波器为第一陷波器，控制单元可以控制第一切换开关的开关控制端，令第一陷波器与主集天线连接，以使第一陷波器滤除B13频段的二次谐波；否则，控制单元可以控制第一切换开关的开关控制端，令第一直通通路与主集天线连接，以使射频信号绕过第一陷波器，直接通过第一直通通路到达主集天线。If the target wave notch is the first wave notch, the control unit can control the switch control end of the first switch, so that the first wave notch is connected to the main antenna, so that the first wave notch filters out the second wave of the B13 frequency band. sub-harmonic; otherwise, the control unit can control the switch control end of the first switch, so that the first direct path is connected to the main antenna, so that the radio frequency signal bypasses the first trap and directly passes through the first direct path Reach the main set antenna.
图4为本发明实施提供的一种射频芯片的结构示意图。图4显示的射频芯片仅仅是一个示例，不应对本发明实施例的功能和使用范围带来任何限制。FIG. 4 is a schematic structural diagram of a radio frequency chip provided by the implementation of the present invention. The radio frequency chip shown in FIG. 4 is only an example, and should not limit the functions and scope of use of the embodiments of the present invention.
如图4所示，上述射频芯片可以包括至少一个处理器；以及与上述处理器通信连接的至少一个存储器，其中：存储器存储有可被处理器执行的程序指令，上述处理器调用上述程序指令能够执行本发明图3所示实施例提供的射频信号传输方法。射频芯片以通用计算设备的形式表现。射频芯片的组件可以包括但不限于：一个或者多个处理器410，通信接口420，存储器430，以及连接不同系统组件(包括存储器430和处理单元410)的通信总线440。As shown in Figure 4, the radio frequency chip may include at least one processor; and at least one memory communicated with the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to be able to The radio frequency signal transmission method provided in the embodiment shown in FIG. 3 of the present invention is executed. RF chips take the form of general-purpose computing devices. The components of the radio frequency chip may include, but are not limited to: one or more processors 410, a communication interface 420, a memory 430, and a communication bus 440 connecting different system components (including the memory 430 and the processing unit 410).
通信总线440表示几类总线结构中的一种或多种，包括存储器总线或者存储 器控制器，外围总线，图形加速端口，处理器或者使用多种总线结构中的任意总线结构的局域总线。举例来说，这些体系结构包括但不限于工业标准体系结构(Industry Standard Architecture；以下简称：ISA)总线，微通道体系结构(Micro Channel Architecture；以下简称：MAC)总线，增强型ISA总线、视频电子标准协会(Video Electronics Standards Association；以下简称：VESA)局域总线以及外围组件互连(Peripheral Component Interconnection；以下简称：PCI)总线。 Communication bus 440 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (Industry Standard Architecture; hereinafter referred to as: ISA) bus, Micro Channel Architecture (Micro Channel Architecture; hereinafter referred to as: MAC) bus, enhanced ISA bus, video electronics Standards Association (Video Electronics Standards Association; hereinafter referred to as: VESA) local bus and Peripheral Component Interconnection (hereinafter referred to as: PCI) bus.
射频芯片典型地包括多种计算机系统可读介质。这些介质可以是任何能够被射频芯片访问的可用介质，包括易失性和非易失性介质，可移动的和不可移动的介质。A radio frequency chip typically includes various computer system readable media. These media can be any available media that can be accessed by the RF chip, including volatile and non-volatile media, removable and non-removable media.
存储器430可以包括易失性存储器形式的计算机系统可读介质，例如随机存取存储器(Random Access Memory；以下简称：RAM)和/或高速缓存存储器。射频芯片可以进一步包括其它可移动/不可移动的、易失性/非易失性计算机系统存储介质。存储器430可以包括至少一个程序产品，该程序产品具有一组(例如至少一个)程序模块，这些程序模块被配置以执行本发明各实施例的功能。The memory 430 may include a computer system-readable medium in the form of a volatile memory, such as a random access memory (Random Access Memory; RAM for short) and/or a cache memory. The radio frequency chip may further include other removable/non-removable, volatile/nonvolatile computer system storage media. Memory 430 may include at least one program product having a set (eg, at least one) of program modules configured to perform the functions of various embodiments of the present invention.
具有一组(至少一个)程序模块的程序/实用工具，可以存储在存储器430中，这样的程序模块包括——但不限于——操作系统、一个或者多个应用程序、其它程序模块以及程序数据，这些示例中的每一个或某种组合中可能包括网络环境的实现。程序模块通常执行本发明所描述的实施例中的功能和/或方法。A program/utility having a set (at least one) of program modules may be stored in memory 430, such program modules including - but not limited to - an operating system, one or more application programs, other program modules, and program data , each or some combination of these examples may include implementations of network environments. The program modules generally perform the functions and/or methodologies of the described embodiments of the invention.
处理器410通过运行存储在存储器430中的程序，从而执行各种功能应用以及数据处理，例如实现本发明图3所示实施例提供的射频信号传输方法。The processor 410 executes various functional applications and data processing by running the programs stored in the memory 430, for example, realizing the radio frequency signal transmission method provided by the embodiment shown in FIG. 3 of the present invention.
本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行本发明图3所示实施例提供的射频信号传输方法。An embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to execute the present invention as shown in FIG. 3 The radio frequency signal transmission method provided by the embodiment.
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形 式，包括——但不限于——电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。A computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including - but not limited to - electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括——但不限于——无线、电线、光缆、RF等等，或者上述的任意合适的组合。Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including - but not limited to - wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
可以以一种或多种程序设计语言或其组合来编写用于执行本发明操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言—诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络——包括局域网(Local Area Network；以下简称：LAN)或广域网(Wide Area Network；以下简称：WAN)连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。Computer program code for carrying out the operations of the present invention may be written in one or more programming languages, or combinations thereof, including object-oriented programming languages—such as Java, Smalltalk, C++, and conventional Procedural Programming Language - such as "C" or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user computer through any kind of network, including a Local Area Network (hereinafter referred to as LAN) or a Wide Area Network (hereinafter referred to as WAN), or it may Connect to an external computer (for example via the Internet using an Internet Service Provider).
上述对本发明特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。The foregoing describes specific embodiments of the present invention. Other implementations are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. Multitasking and parallel processing are also possible or may be advantageous in certain embodiments.
在本发明的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本发明中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式 结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本发明中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of the present invention, reference to the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" means that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in the present invention without conflicting with each other.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing custom logical functions or steps of a process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.
取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrases "if determined" or "if detected (the stated condition or event)" could be interpreted as "when determined" or "in response to the determination" or "when detected (the stated condition or event) )" or "in response to detection of (a stated condition or event)".
在本发明所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined Or it can be integrated into another system, or some features can be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。 上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.
Claims (10)
- 一种射频电路，其特征在于，包括：预处理单元、频段切换单元、控制单元、滤波单元和主集天线，其中，所述滤波单元包括至少一个陷波器，所述至少一个陷波器位于所述频段切换单元和所述主集天线之间；所述控制单元分别与所述频段切换单元以及所述至少一个陷波器连接；A radio frequency circuit, characterized in that it includes: a preprocessing unit, a frequency band switching unit, a control unit, a filtering unit, and a main set antenna, wherein the filtering unit includes at least one notch filter, and the at least one notch filter is located at Between the frequency band switching unit and the main set antenna; the control unit is respectively connected to the frequency band switching unit and the at least one trap;所述频段切换单元，用于确定所述预处理单元输出的射频信号的工作频段；The frequency band switching unit is configured to determine the working frequency band of the radio frequency signal output by the preprocessing unit;所述控制单元，用于根据所述射频信号的工作频段，从所述至少一个陷波器中确定目标陷波器，并控制所述目标陷波器接通所述频段切换单元与所述主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线。The control unit is configured to determine a target wave notch from the at least one wave notch according to the working frequency band of the radio frequency signal, and control the target wave notch to connect the frequency band switching unit and the main An integrated antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main integrated antenna through the target wave notch filter.
- 根据权利要求1所述的射频电路，其特征在于，所述滤波单元包括：第一陷波器和第一直通通路；The radio frequency circuit according to claim 1, wherein the filtering unit comprises: a first notch filter and a first through path;当射频信号的工作频段为B13频段时，所述控制单元控制所述第一陷波器接通所述频段切换单元与所述主集天线，以使射频信号通过所述第一陷波器传输至主集天线；When the working frequency band of the radio frequency signal is the B13 frequency band, the control unit controls the first wave trap to connect the frequency band switching unit and the main set antenna, so that the radio frequency signal is transmitted through the first wave trap to the main set antenna;当射频信号的工作频段为非B13频段时，所述控制单元控制所述第一直通通路接通所述频段切换单元与所述主集天线，以使射频信号通过所述第一直通通路传输至主集天线。When the working frequency band of the radio frequency signal is a non-B13 frequency band, the control unit controls the first direct path to connect the frequency band switching unit and the main set antenna, so that the radio frequency signal passes through the first direct path transmitted to the main set antenna.
- 根据权利要求2所述的射频电路，其特征在于，所述滤波单元，还包括：第一切换开关，The radio frequency circuit according to claim 2, wherein the filtering unit further comprises: a first switch,所述第一陷波器和所述第一直通通路的输入端并联于所述频段切换单元的输出端；The input ends of the first notch filter and the first direct path are connected in parallel to the output end of the frequency band switching unit;所述第一陷波器和所述第一直通通路的输出端通过所述第一切换开关 与所述主集天线连接；The output end of the first trap and the first direct path is connected to the main set antenna through the first switch;所述控制单元分别与所述频段切换单元和所述第一切换开关连接；The control unit is respectively connected to the frequency band switching unit and the first switch;所述控制单元，通过控制所述第一切换开关控制所述第一陷波器或者所述第一直通通路与所述主集天线接通。The control unit controls the first wave trap or the first direct path to be connected to the main antenna by controlling the first switch.
- 根据权利要求3所述的射频电路，其特征在于，The radio frequency circuit according to claim 3, characterized in that,所述第一切换开关包括第一开关端子、第二开关端子和开关控制端；The first changeover switch includes a first switch terminal, a second switch terminal and a switch control terminal;所述第一陷波器和所述第一直通通路的输出端分别与所述第一开关端子和所述第二开关端子连接；所述第一开关端子和所述第二开关端子在所述开关控制端的控制下与所述主集天线接通；所述控制单元与所述开关控制端连接；The output ends of the first wave trap and the first direct path are respectively connected to the first switch terminal and the second switch terminal; the first switch terminal and the second switch terminal are connected to the connected to the main antenna under the control of the switch control terminal; the control unit is connected to the switch control terminal;所述控制单元，通过控制所述开关控制端控制所述第一开关端子或者所述第二开关端子与所述主集天线接通。The control unit controls the switch control terminal to control the first switch terminal or the second switch terminal to be connected to the main antenna.
- 根据权利要求1所述的射频电路，其特征在于，所述预处理单元，包括：射频收发器、功率放大器和双工器；The radio frequency circuit according to claim 1, wherein the preprocessing unit comprises: a radio frequency transceiver, a power amplifier and a duplexer;所述射频收发器，用于生成射频信号，并将生成的射频信号发送至所述功率放大器；The radio frequency transceiver is used to generate a radio frequency signal and send the generated radio frequency signal to the power amplifier;所述功率放大器，用于对射频信号的功率进行放大，并将经过功率放大的射频信号发送至所述双工器；The power amplifier is used to amplify the power of the radio frequency signal, and send the power amplified radio frequency signal to the duplexer;所述双工器，用于将从所述功率放大器接收的射频信号发送至所述频段切换单元。The duplexer is configured to send the radio frequency signal received from the power amplifier to the frequency band switching unit.
- 一种射频信号传输方法，其特征在于，所述方法应用于权利要求1至4任一项所述的射频电路，所述射频电路包括控制单元，所述控制单元执行所述射频信号传输方法，包括：A radio frequency signal transmission method, characterized in that the method is applied to the radio frequency circuit according to any one of claims 1 to 4, the radio frequency circuit includes a control unit, and the control unit executes the radio frequency signal transmission method, include:确定频段切换单元选择的射频信号的工作频段；Determine the working frequency band of the radio frequency signal selected by the frequency band switching unit;根据所述射频信号的工作频段，从滤波单元包含的至少一个陷波器中确定目标陷波器；determining a target notch filter from at least one notch filter included in the filtering unit according to the working frequency band of the radio frequency signal;控制所述目标陷波器接通所述频段切换单元与主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线。Controlling the target wave trap to connect the frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap.
- 根据权利要求6所述的方法，其特征在于，所述滤波单元，包括：第一陷波器和第一直通通路；The method according to claim 6, wherein the filtering unit comprises: a first notch filter and a first direct path;根据所述射频信号的工作频段，从滤波单元包含的至少一个陷波器中确定目标陷波器，包括：According to the working frequency band of the radio frequency signal, the target notch filter is determined from at least one notch filter included in the filtering unit, including:当射频信号的工作频段为B13频段时，将所述第一陷波器确定为所述目标陷波器；When the working frequency band of the radio frequency signal is the B13 frequency band, determining the first notch filter as the target notch filter;当射频信号的工作频段为非B13频段时，将所述第一直通通路确定为所述目标陷波器。When the working frequency band of the radio frequency signal is a non-B13 frequency band, the first direct path is determined as the target wave notch filter.
- 根据权利要求7所述的方法，其特征在于，所述滤波单元，还包括：第一切换开关，所述第一陷波器和第一直通通路通过所述第一切换开关与所述主集天线连接；The method according to claim 7, wherein the filtering unit further comprises: a first switch, and the first notch filter and the first direct path are connected to the main channel through the first switch. set antenna connection;控制所述目标陷波器接通所述频段切换单元与主集天线，以使所述频段切换单元输出的射频信号经过所述目标陷波器传输至所述主集天线，包括：Controlling the target wave trap to connect the frequency band switching unit and the main antenna, so that the radio frequency signal output by the frequency band switching unit is transmitted to the main antenna through the target wave trap, including:当所述第一陷波器为所述目标陷波器时，控制所述第一切换开关接通所述第一陷波器与所述主集天线的连接；When the first wave trap is the target wave trap, controlling the first switch to connect the first wave trap to the main antenna;当所述第一直通通路为所述目标陷波器时，控制所述第一切换开关接通所述第一直通通路与所述主集天线的连接。When the first direct path is the target wave trap, the first switch is controlled to connect the first direct path to the main antenna.
- 一种射频芯片，其特征在于，包括：A kind of radio frequency chip is characterized in that, comprises:至少一个处理器；以及at least one processor; and与所述处理器通信连接的至少一个存储器，其中：at least one memory communicatively coupled to the processor, wherein:所述处理器，其用于执行存储在所述存储器中的计算机程序指令，其中，当该计算机程序指令被所述处理器执行时，触发所述射频芯片执行如权利要求6至8任一项所述的方法。The processor is configured to execute computer program instructions stored in the memory, wherein when the computer program instructions are executed by the processor, the radio frequency chip is triggered to execute any one of claims 6 to 8 the method described.
- 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行权利要求6至8任一所述的方法。A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any one of claims 6 to 8. the method described.
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| CN113765536A (en) | 2021-12-07 |
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