CN107612583A - Antenna system and control method for switchable external antenna - Google Patents
Antenna system and control method for switchable external antenna Download PDFInfo
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Abstract
本发明关于一种可切换外接天线的天线系统，包括多个内建天线、切换电路、外接天线控制电路及外接天线连接器。多个内建天线至少包括第一内建天线及第二内建天线，第一内建天线及第二内建天线用于接收或传送射频信号。切换电路用于切换第一内建天线或第二内建天线以接收或传送射频信号。外接天线控制电路用于传送控制信号至切换电路。当外接天线连接器连接外接天线时，外接天线控制电路传送第一逻辑电平的控制信号至切换电路，切换电路切换至外接天线执行接收或传送射频信号的功能。
The invention relates to an antenna system with switchable external antennas, which includes a plurality of built-in antennas, a switching circuit, an external antenna control circuit and an external antenna connector. The plurality of built-in antennas at least include a first built-in antenna and a second built-in antenna, and the first built-in antenna and the second built-in antenna are used for receiving or transmitting radio frequency signals. The switching circuit is used for switching the first built-in antenna or the second built-in antenna to receive or transmit radio frequency signals. The external antenna control circuit is used to transmit the control signal to the switching circuit. When the external antenna connector is connected to the external antenna, the external antenna control circuit transmits a control signal of a first logic level to the switching circuit, and the switching circuit switches to the external antenna to perform the function of receiving or transmitting radio frequency signals.
Description
技术领域technical field
本发明涉及一种天线系统，特别是涉及一种可切换外接天线的天线系统及控制方法。The invention relates to an antenna system, in particular to an antenna system and a control method for a switchable external antenna.
背景技术Background technique
请参照图1，图1为传统的天线系统的电路图。传统的天线系统100包括第一内建天线110、第二内建天线120、切换电路130及微控制器140。切换电路130电性连接第一内建天线110、第二内建天线120及微控制器140。微控制器140用于传送微电脑信号MS至切换电路130。微电脑信号MS用于控制切换电路130以切换第一内建天线110或第二内建天线120来进行传送或接收射频信号RFS。Please refer to FIG. 1 , which is a circuit diagram of a conventional antenna system. The traditional antenna system 100 includes a first built-in antenna 110 , a second built-in antenna 120 , a switching circuit 130 and a microcontroller 140 . The switching circuit 130 is electrically connected to the first built-in antenna 110 , the second built-in antenna 120 and the microcontroller 140 . The microcontroller 140 is used to transmit the microcomputer signal MS to the switching circuit 130 . The microcomputer signal MS is used to control the switching circuit 130 to switch the first built-in antenna 110 or the second built-in antenna 120 to transmit or receive the radio frequency signal RFS.
然而，当天候不佳时，会严重影响射频信号RFS的传送质量，意即第一内建天线110及第二内建天线120的通信质量都很差，导致微控制器140所传送的微电脑信号MS会随机切换第一内建天线110或第二内建天线120。或是当有阻挡物严重影响射频信号RFS的传送质量时，控制器140也同样会随机切换第一内建天线110或第二内建天线120。However, when the weather is bad, it will seriously affect the transmission quality of the radio frequency signal RFS, which means that the communication quality of the first built-in antenna 110 and the second built-in antenna 120 are very poor, resulting in the microcomputer signal transmitted by the microcontroller 140 The MS will randomly switch between the first built-in antenna 110 and the second built-in antenna 120 . Or when there is an obstacle seriously affecting the transmission quality of the radio frequency signal RFS, the controller 140 also randomly switches between the first built-in antenna 110 and the second built-in antenna 120 .
发明内容Contents of the invention
本发明所要解决的技术问题在于，针对现有技术的不足提供一种可切换外接天线的天线系统及控制方法。The technical problem to be solved by the present invention is to provide an antenna system and a control method with a switchable external antenna for the deficiencies of the prior art.
为了解决上述的技术问题，本发明实施例提供一种可切换外接天线的天线系统，包括多个内建天线、切换电路、外接天线控制电路及外接天线连接器。多个内建天线至少包括第一内建天线及第二内建天线，第一内建天线及第二内建天线用于接收或传送射频信号。切换电路耦接第一内建天线及第二内建天线，切换电路用于切换第一内建天线或第二内建天线以接收或传送射频信号。外接天线控制电路耦接切换电路，用于传送控制信号至切换电路。外接天线控制连接器耦接外接天线控制电路与第二内建天线。其中，当外接天线连接器连接外接天线时，外接天线控制电路传送第一逻辑电平的控制信号至切换电路，切换电路切换至外接天线执行接收或传送射频信号。In order to solve the above technical problems, an embodiment of the present invention provides an antenna system with a switchable external antenna, including multiple built-in antennas, a switching circuit, an external antenna control circuit and an external antenna connector. The plurality of built-in antennas at least include a first built-in antenna and a second built-in antenna, and the first built-in antenna and the second built-in antenna are used for receiving or transmitting radio frequency signals. The switching circuit is coupled to the first built-in antenna and the second built-in antenna, and the switching circuit is used for switching the first built-in antenna or the second built-in antenna to receive or transmit radio frequency signals. The external antenna control circuit is coupled to the switch circuit for transmitting control signals to the switch circuit. The external antenna control connector is coupled to the external antenna control circuit and the second built-in antenna. Wherein, when the external antenna connector is connected to the external antenna, the external antenna control circuit transmits a control signal of the first logic level to the switching circuit, and the switching circuit switches to the external antenna to receive or transmit radio frequency signals.
更进一步地，当外接天线连接器没有连接外接天线时，外接天线控制电路传送第二逻辑电平的控制信号至切换电路，切换电路切换至第一内建天线或第二内建天线以接收或传送射频信号。Furthermore, when the external antenna connector is not connected to an external antenna, the external antenna control circuit transmits a control signal of a second logic level to the switching circuit, and the switching circuit switches to the first built-in antenna or the second built-in antenna to receive or transmit radio frequency signals.
更进一步地，第一逻辑电平的控制信号为逻辑低电平的控制信号；第二逻辑电平的控制信号为逻辑高电平的控制信号。Furthermore, the control signal of the first logic level is a control signal of logic low level; the control signal of the second logic level is a control signal of logic high level.
更进一步地，切换电路还包括与门及切换开关，切换开关包括第一接脚及第二接脚，与门包括第一输入端、第二输入端及输出端；与门的第一输入端接收微电脑信号，与门的第二输入端接收外接天线控制电路所传送的控制信号，与门根据微电脑信号及控制信号而相对产生输出信号至切换开关，输出信号用于切换第一接脚或第二接脚执行接收或传送射频信号。Further, the switching circuit also includes an AND gate and a switch, the switch includes a first pin and a second pin, the AND gate includes a first input terminal, a second input terminal and an output terminal; the first input terminal of the AND gate Receiving the microcomputer signal, the second input terminal of the AND gate receives the control signal transmitted by the external antenna control circuit, and the AND gate generates an output signal to the switch according to the microcomputer signal and the control signal, and the output signal is used to switch the first pin or the second pin The two pins receive or transmit radio frequency signals.
更进一步地，天线系统还进一步包括：电压源，电压源通过第一电感耦接所述外接天线连接器，当外接天线连接器没有连接所述外接天线时，电压源用于提供电压至外接天线控制电路；当外接天线连接外接天线连接器时，电压源与外接天线控制电路形成断路。Furthermore, the antenna system further includes: a voltage source, the voltage source is coupled to the external antenna connector through the first inductance, and when the external antenna connector is not connected to the external antenna, the voltage source is used to provide a voltage to the external antenna Control circuit; when the external antenna is connected to the external antenna connector, the voltage source and the external antenna control circuit form an open circuit.
更进一步地，外接天线控制电路具有电阻与第二电感，电阻的一端接地，电阻的另一端耦接第二电感的一端，第二电感的另一端耦接外接天线连接器。Furthermore, the external antenna control circuit has a resistor and a second inductor, one end of the resistor is grounded, the other end of the resistor is coupled to one end of the second inductor, and the other end of the second inductor is coupled to the external antenna connector.
更进一步地，第一内建天线及第二内建天线为偶极天线。Furthermore, the first built-in antenna and the second built-in antenna are dipole antennas.
本发明实施例提供一种可切换外接天线的无线分享器，包括多个内建天线、切换电路、外接天线控制电路、发光装置及外接天线连接器。多个内建天线至少包括第一内建天线及第二内建天线，第一内建天线及第二内建天线用于接收或传送射频信号。切换电路耦接第一内建天线及第二内建天线，切换电路用于切换第一内建天线或第二内建天线以接收或传送射频信号。外接天线控制电路耦接切换电路，用于传送控制信号至切换电路。外接天线控制连接器耦接外接天线控制电路与第二内建天线。发光装置用于根据无线分享器的通信质量而调整发光颜色。其中，当外接天线连接器连接外接天线时，外接天线控制电路传送第一逻辑电平的控制信号至切换电路，切换电路切换至外接天线执行接收或传送射频信号。An embodiment of the present invention provides a wireless sharer with switchable external antennas, including a plurality of built-in antennas, a switching circuit, an external antenna control circuit, a light emitting device, and an external antenna connector. The plurality of built-in antennas at least include a first built-in antenna and a second built-in antenna, and the first built-in antenna and the second built-in antenna are used for receiving or transmitting radio frequency signals. The switching circuit is coupled to the first built-in antenna and the second built-in antenna, and the switching circuit is used for switching the first built-in antenna or the second built-in antenna to receive or transmit radio frequency signals. The external antenna control circuit is coupled to the switch circuit for transmitting control signals to the switch circuit. The external antenna control connector is coupled to the external antenna control circuit and the second built-in antenna. The light emitting device is used for adjusting the light emitting color according to the communication quality of the wireless sharer. Wherein, when the external antenna connector is connected to the external antenna, the external antenna control circuit transmits a control signal of the first logic level to the switching circuit, and the switching circuit switches to the external antenna to receive or transmit radio frequency signals.
本发明实施例提供一种可切换外接天线的控制方法，适用于天线系统，天线系统包括多个内建天线、切换电路、外接天线控制电路及外接天线连接器。多个内建天线至少包括第一内建天线及第二内建天线。外接天线连接器耦接外接天线控制电路与第二内建天线。控制方法包括由切换电路切换第一内建天线或第二内建天线以接收或传送射频信号；由外接天线控制电路传送控制信号至切换电路；其中，当外接天线连接器连接外接天线时，外接天线控制电路传送第一逻辑电平的控制信号至切换电路，切换电路切换至外接天线执行接收或传送射频信号。An embodiment of the present invention provides a control method for a switchable external antenna, which is suitable for an antenna system. The antenna system includes a plurality of built-in antennas, a switching circuit, an external antenna control circuit, and an external antenna connector. The plurality of built-in antennas at least include a first built-in antenna and a second built-in antenna. The external antenna connector is coupled to the external antenna control circuit and the second built-in antenna. The control method includes switching the first built-in antenna or the second built-in antenna by the switching circuit to receive or transmit radio frequency signals; transmitting the control signal to the switching circuit by the external antenna control circuit; wherein, when the external antenna connector is connected to the external antenna, the external antenna The antenna control circuit transmits a control signal of the first logic level to the switch circuit, and the switch circuit switches to the external antenna to receive or transmit radio frequency signals.
更进一步地，当外接天线连接器没有连接外接天线时，外接天线控制电路传送第二逻辑电平的控制信号至切换电路，切换电路切换至第一内建天线或第二内建天线以接收或传送射频信号。Furthermore, when the external antenna connector is not connected to an external antenna, the external antenna control circuit transmits a control signal of a second logic level to the switching circuit, and the switching circuit switches to the first built-in antenna or the second built-in antenna to receive or transmit radio frequency signals.
本发明的有益效果在于，本发明技术方案所提供的天线系统能通过“当天线系统的外接天线控制电路传送第一逻辑电平的控制信号至切换电路时，切换电路切换至外接天线执行接收或传送射频信号的功能。”的技术特征，本发明的可切换外接天线的天线系统可以在天候不佳或是遮蔽物影响导致通信质量不佳时，由外接天线代替内建天线执行收发射频信号的功能。如此，在内建天线的通信质量不佳时，由外接天线来提升其通信质量。The beneficial effect of the present invention is that the antenna system provided by the technical solution of the present invention can pass "when the external antenna control circuit of the antenna system transmits the control signal of the first logic level to the switching circuit, the switching circuit switches to the external antenna to perform reception or The function of transmitting radio frequency signals." The technical characteristics of the switchable external antenna antenna system of the present invention can be performed by the external antenna instead of the built-in antenna when the communication quality is poor due to bad weather or the influence of shelters. Function. In this way, when the communication quality of the built-in antenna is poor, the communication quality of the external antenna can be improved.
为使能更进一步了解本发明的特征及技术内容，请参阅以下有关本发明的详细说明与附图，然而所提供的附图仅提供参考与说明用，并非用来对本发明加以限制。In order to further understand the features and technical content of the present invention, please refer to the following detailed description and accompanying drawings of the present invention. However, the provided drawings are provided for reference and illustration only, and are not intended to limit the present invention.
附图说明Description of drawings
图1为传统的天线系统的电路图。FIG. 1 is a circuit diagram of a conventional antenna system.
图2A为本发明实施例的可切换外接天线的天线系统的电路图。FIG. 2A is a circuit diagram of an antenna system with a switchable external antenna according to an embodiment of the present invention.
图2B为图2A的切换电路的真值表。FIG. 2B is a truth table of the switching circuit of FIG. 2A.
图3为本发明实施例的将可切换外接天线的天线系统应用于无线分享器的外观示意图。FIG. 3 is a schematic diagram of the appearance of an antenna system with a switchable external antenna applied to a wireless sharer according to an embodiment of the present invention.
图4为本发明实施例的可切换外接天线的天线系统的控制方法流程图。FIG. 4 is a flowchart of a control method of an antenna system with a switchable external antenna according to an embodiment of the present invention.
具体实施方式detailed description
为改善如图1所示的传统的天线系统100在天候不佳或是遮蔽物严重影响通信质量时，微控制器140并无法辨识出第一内建天线110或第二内建天线120中的哪一个通信质量较佳，导致微控制器140所传送的微电脑信号MS来控制切换电路130随机切换第一内建天线110或第二内建天线120执行收发射频信号RFS。换言的，在天候不佳或是遮蔽物严重影响通信质量时，传统的天线系统100无法有效地切换至通信质量较好的内建天线。以下将对本发明的实施例提供的有效提升通信质量所使用的技术方案作进一步说明。In order to improve the traditional antenna system 100 shown in FIG. 1, when the weather is bad or the shelter seriously affects the communication quality, the microcontroller 140 cannot identify the first built-in antenna 110 or the second built-in antenna 120. Which one has the better communication quality causes the microcomputer signal MS sent by the microcontroller 140 to control the switching circuit 130 to randomly switch between the first built-in antenna 110 and the second built-in antenna 120 to transmit and receive radio frequency signals RFS. In other words, the traditional antenna system 100 cannot effectively switch to the built-in antenna with better communication quality when the weather is bad or the shelter seriously affects the communication quality. The technical solution for effectively improving the communication quality provided by the embodiments of the present invention will be further described below.
请参阅图2A，图2A为本发明实施例的可切换外接天线的天线系统的电路图。可切换外接天线的天线系统200包括多个内建天线，多个内建天线至少包括第一内建天线210、第二内建天线220。天线系统200还包括切换电路230、微控制器240、外接天线控制电路250、外接天线连接器260及电压源270。Please refer to FIG. 2A . FIG. 2A is a circuit diagram of an antenna system with a switchable external antenna according to an embodiment of the present invention. The antenna system 200 with switchable external antennas includes multiple built-in antennas, and the multiple built-in antennas at least include a first built-in antenna 210 and a second built-in antenna 220 . The antenna system 200 further includes a switching circuit 230 , a microcontroller 240 , an external antenna control circuit 250 , an external antenna connector 260 and a voltage source 270 .
微控制器240控制由第一内建天线210或第二内建天线220接收或传送射频信号RFS。换句话说，微控制器240所传送的微电脑信号MS用于令切换电路230中的切换开关233切换至由第一内建天线210及第二内建天线220其中一通信质量较佳者。The microcontroller 240 controls the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit the radio frequency signal RFS. In other words, the microcomputer signal MS transmitted by the microcontroller 240 is used to switch the switch 233 in the switching circuit 230 to one of the first built-in antenna 210 and the second built-in antenna 220 with better communication quality.
切换电路230耦接于第一内建天线210及第二内建天线220，切换电路230用于切换第一内建天线210或第二内建天线220以接收或传送射频信号RFS。进一步来说，切换电路230包括与门231及切换开关233，与门231的输出端2313耦接切换开关233。与门231包括第一输入端2311及第二输入端2312。与门231的第一输入端2311接收微电脑信号MS。切换开关233包括第一接脚2331及第二接脚2332。与门231的第二输入端2312接收外接天线控制电路250所传送的控制信号CS，与门231根据微电脑信号MS及外接天线控制电路250所传送的控制信号CS而相对产生输出信号OS至切换开关233。换句话说，与门231的输出端2313用于传送输出信号OS至切换开关233，输出信号OS可用于执行切换开关233的切换功能。The switching circuit 230 is coupled to the first built-in antenna 210 and the second built-in antenna 220, and the switch circuit 230 is used to switch the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit the radio frequency signal RFS. Further, the switching circuit 230 includes an AND gate 231 and a switching switch 233 , and the output terminal 2313 of the AND gate 231 is coupled to the switching switch 233 . The AND gate 231 includes a first input terminal 2311 and a second input terminal 2312 . The first input terminal 2311 of the AND gate 231 receives the microcomputer signal MS. The switch 233 includes a first pin 2331 and a second pin 2332 . The second input terminal 2312 of the AND gate 231 receives the control signal CS transmitted by the external antenna control circuit 250, and the AND gate 231 generates an output signal OS to the switch according to the microcomputer signal MS and the control signal CS transmitted by the external antenna control circuit 250. 233. In other words, the output terminal 2313 of the AND gate 231 is used to transmit the output signal OS to the switching switch 233 , and the output signal OS can be used to perform the switching function of the switching switch 233 .
外接天线连接器260耦接外接天线控制电路250与第二内建天线220，外接天线连接器260用于连接外接天线。举例来说，当第一内建天线210及第二内建天线220的通信质量皆小于默认值时，由天线系统200的发光装置(图未示)由绿光转换成红光，提醒用户须以外接天线来提升天线系统200的通信质量，强制由外接天线执行收发射频信号RFS的功能，代替第一内建天线210及第二内建天线220的通信功能。外接天线控制电路250耦接于切换电路230与第二内建天线220，外接天线控制电路250用于传送控制信号CS至切换电路230。The external antenna connector 260 is coupled to the external antenna control circuit 250 and the second built-in antenna 220 , and the external antenna connector 260 is used for connecting an external antenna. For example, when the communication quality of the first built-in antenna 210 and the second built-in antenna 220 are both lower than the default value, the light emitting device (not shown) of the antenna system 200 is converted from green light to red light to remind the user to The external antenna is used to improve the communication quality of the antenna system 200 , and the external antenna is forced to perform the function of sending and receiving radio frequency signals RFS instead of the communication function of the first built-in antenna 210 and the second built-in antenna 220 . The external antenna control circuit 250 is coupled to the switch circuit 230 and the second built-in antenna 220 , and the external antenna control circuit 250 is used to transmit the control signal CS to the switch circuit 230 .
当外接天线连接器260连接外接天线时，外接天线控制电路250传送第一逻辑电平的控制信号CS至切换电路230，第一逻辑电平的控制信号CS为逻辑低电平的控制信号CS，逻辑低电平的控制信号CS用于使切换电路230切换至外接天线执行接收或传送射频信号RFS的功能。当外接天线连接器260没有连接外接天线时，外接天线控制电路250传送第二逻辑电平的控制信号CS至切换电路230，第二逻辑电平的控制信号CS为逻辑高电平的控制信号CS，逻辑高电平的控制信号CS用于使切换电路233切换至第一内建天线210或第二内建天线220以接收或传送射频信号RFS。When the external antenna connector 260 is connected to an external antenna, the external antenna control circuit 250 transmits a control signal CS of a first logic level to the switching circuit 230, the control signal CS of the first logic level is a control signal CS of a logic low level, The logic low control signal CS is used to switch the switching circuit 230 to the external antenna to perform the function of receiving or transmitting the radio frequency signal RFS. When the external antenna connector 260 is not connected to an external antenna, the external antenna control circuit 250 transmits a control signal CS of a second logic level to the switching circuit 230, and the control signal CS of the second logic level is a control signal CS of a logic high level. , the logic high level control signal CS is used to switch the switching circuit 233 to the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit the radio frequency signal RFS.
电压源270通过第一电感271耦接外接天线连接器260，当外接天线连接器260没有连接外接天线时，电压源270用于提供电压至外接天线控制电路250，电压源270所提供的电压用于使外接天线控制电路250传送逻辑高电平的控制信号CS至切换电路230的与门230的第二输入端2312。逻辑高电平的控制信号CS开启切换开关233的切换功能。此时，由微控制器240所传送的微电脑信号MS来决定切换开关233切换第一内建天线210或第二内建天线220执行收发射频信号RFS的功能。当外接天线连接外接天线连接器260时，电压源270与外接天线控制电路250形成断路，根据电路原理来说，电压源270并无法提供电压至外接天线控制电路250，外接天线控制电路250传送逻辑低电平的控制信号CS至切换电路230的与门231的第二输入端2312。逻辑低电平的控制信号CS用于使切换开关233切换至外接天线执行收发射频信号RFS的通信功能。举例来说，控制信号CS可以为直流电压的控制信号CS。The voltage source 270 is coupled to the external antenna connector 260 through the first inductor 271. When the external antenna connector 260 is not connected to an external antenna, the voltage source 270 is used to provide a voltage to the external antenna control circuit 250. The voltage provided by the voltage source 270 is used for The external antenna control circuit 250 transmits the control signal CS of logic high level to the second input terminal 2312 of the AND gate 230 of the switching circuit 230 . The control signal CS of logic high level enables the switching function of the switching switch 233 . At this time, the switch 233 is determined by the microcomputer signal MS sent by the microcontroller 240 to switch the first built-in antenna 210 or the second built-in antenna 220 to perform the function of transmitting and receiving the radio frequency signal RFS. When the external antenna is connected to the external antenna connector 260, the voltage source 270 forms an open circuit with the external antenna control circuit 250. According to the circuit principle, the voltage source 270 cannot provide voltage to the external antenna control circuit 250, and the external antenna control circuit 250 transmits logic. The low-level control signal CS is sent to the second input terminal 2312 of the AND gate 231 of the switching circuit 230 . The logic low level control signal CS is used to switch the switch 233 to the external antenna to perform the communication function of sending and receiving the radio frequency signal RFS. For example, the control signal CS may be a DC voltage control signal CS.
外接天线控制电路250具有电阻251与第二电感253，电阻251的一端接地，电阻251的另一端耦接第二电感253的一端，并由电阻251与第二电感253的接点传送控制信号CS至与门231的第二输入端2312，第二电感253的另一端耦接外接天线连接器260及切换电路230。其中第一内建天线210及第二内建天线220为偶极天线。偶极天线可以为半波长偶极天线。The external antenna control circuit 250 has a resistor 251 and a second inductor 253, one end of the resistor 251 is grounded, the other end of the resistor 251 is coupled to one end of the second inductor 253, and the control signal CS is transmitted to the The second input end 2312 of the AND gate 231 and the other end of the second inductor 253 are coupled to the external antenna connector 260 and the switching circuit 230 . Wherein the first built-in antenna 210 and the second built-in antenna 220 are dipole antennas. The dipole antenna may be a half wavelength dipole antenna.
请同时参阅图2A及图2B，图2B为图2A的切换电路的真值表。当外接天线连接器260未连接外接天线时，电压源270提供电压至外接天线控制电路250，以令外接天线控制电路250传送逻辑高电平的控制信号CS至与门231，用于令切换开关233切换至第一内建天线210或第二内建天线220以接收或传送射频信号RFS，此时，由微控制器240来控制切换开关233切换至第一内建天线210或第二内建天线220执行收发射频信号RFS的功能。当第一内建天线210或第二内建天线220的通信质量都不佳时，可以通过外接天线连接器260连接外接天线，此时，外接天线控制电路250与电压源270形成断路，电压源270并无法提供电压至外接天线控制电路250。外接天线控制电路250传送逻辑低电平的控制信号CS至与门231，逻辑低电平的控制信号CS用于使切换开关233切换至外接天线执行收发射频信号RFS的功能。Please refer to FIG. 2A and FIG. 2B at the same time. FIG. 2B is a truth table of the switching circuit in FIG. 2A . When the external antenna connector 260 is not connected to an external antenna, the voltage source 270 provides a voltage to the external antenna control circuit 250, so that the external antenna control circuit 250 transmits a logic high level control signal CS to the AND gate 231 for switching the switch 233 switches to the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit the radio frequency signal RFS, at this time, the microcontroller 240 controls the switch 233 to switch to the first built-in antenna 210 or the second built-in antenna The antenna 220 performs the function of transmitting and receiving radio frequency signals RFS. When the communication quality of the first built-in antenna 210 or the second built-in antenna 220 is not good, an external antenna can be connected through the external antenna connector 260. At this time, the external antenna control circuit 250 forms an open circuit with the voltage source 270, and the voltage source 270 cannot provide voltage to the external antenna control circuit 250 . The external antenna control circuit 250 transmits a logic low level control signal CS to the AND gate 231 , and the logic low level control signal CS is used to switch the switch 233 to the external antenna to perform the function of transmitting and receiving radio frequency signals RFS.
请参阅图3，图3为本发明实施例的可切换外接天线的天线系统应用于无线分享器的外观示意图。无线分享器300至少包括第一内建天线310、第二内建天线320、外接天线连接器360及发光装置380。一般来说，用户位于室内使用移动装置时，会以WIFI模式连接无线分享器300，无线分享器300包括有多个内建天线，各内建天线所指向的方向并不相同，以令室内的每一处的通信质量保持优良。当第一内建天线310及第二内建天线320指向室内的每个角落所造成通信质量都不佳时，可以由外接天线连接器360连接外接天线，强制由外接天线执行收发射频信号RFS的功能。另外，当室内的通信质量不佳时，发光装置380可以由绿灯转为红灯，以提醒用户需要将外接天线连接到外接天线连接器360。Please refer to FIG. 3 . FIG. 3 is a schematic diagram showing the appearance of an antenna system with a switchable external antenna applied to a wireless sharer according to an embodiment of the present invention. The wireless sharer 300 at least includes a first built-in antenna 310 , a second built-in antenna 320 , an external antenna connector 360 and a light emitting device 380 . Generally speaking, when a user uses a mobile device indoors, he will connect to the wireless sharer 300 in WIFI mode. The wireless sharer 300 includes multiple built-in antennas, and the directions of the built-in antennas are different, so that the indoor Communication quality remained excellent at each location. When the first built-in antenna 310 and the second built-in antenna 320 point to every corner of the room and the communication quality is not good, the external antenna connector 360 can be connected to the external antenna, and the external antenna is forced to perform the transmission and reception of the radio frequency signal RFS. Function. In addition, when the indoor communication quality is poor, the light of the light emitting device 380 can turn from green to red to remind the user that an external antenna needs to be connected to the external antenna connector 360 .
请同时参阅图2A及图4，图4为本发明实施例的可切换外接天线的天线系统的控制方法流程图。在步骤S405中，由内建天线收发射频信号RFS，切换电路230切换第一内建天线210或第二内建天线220以接收或传送射频信号RFS。在步骤S410中，由外接天线控制电路250传送控制信号CS至切换电路230。在步骤S415中，判断是否连接外接天线，若是，进入步骤S420，若否，进入步骤S425。在步骤S420中，外接天线连接器260连接外接天线时，外接天线控制电路250传送逻辑低电平的控制信号CS至切换电路230，逻辑低电平的控制信号CS用于使切换电路230切换至外接天线执行接收或传送射频信号RFS的功能。在步骤S425中，外接天线连接器260没有连接外接天线时，外接天线控制电路250传送逻辑高电平的控制信号CS至切换电路230，逻辑高电平的控制信号CS用于使切换电路230切换至第一内建天线210或第二内建天线220以接收或传送射频信号RFS。Please refer to FIG. 2A and FIG. 4 at the same time. FIG. 4 is a flowchart of a control method of an antenna system with a switchable external antenna according to an embodiment of the present invention. In step S405 , the built-in antenna transmits and receives the radio frequency signal RFS, and the switching circuit 230 switches the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit the radio frequency signal RFS. In step S410 , the external antenna control circuit 250 transmits the control signal CS to the switching circuit 230 . In step S415, it is determined whether an external antenna is connected, if yes, go to step S420, if not, go to step S425. In step S420, when the external antenna connector 260 is connected to an external antenna, the external antenna control circuit 250 transmits a logic low level control signal CS to the switching circuit 230, and the logic low level control signal CS is used to switch the switching circuit 230 to The external antenna performs the function of receiving or transmitting radio frequency signal RFS. In step S425, when the external antenna connector 260 is not connected to an external antenna, the external antenna control circuit 250 transmits a logic high level control signal CS to the switching circuit 230, and the logic high level control signal CS is used to switch the switching circuit 230 to the first built-in antenna 210 or the second built-in antenna 220 to receive or transmit radio frequency signals RFS.
综上所述，本发明实施例的可切换外接天线的天线系统具有能够连接外接天线的外接天线连接器，外接天线连接器可以在内建天线的通信质量都不佳时，提供外接天线强制执行收发射频信号的功能。另外，通过上述可切换外接天线的天线系统，在一般的无线分享器内仅需要加装与门、电压源及外接天线控制电路即能取代由微控制器执行切换内建天线的通信功能，并不需要更改微控制器内部的程序代码，因此，可以有效降低成本。另外，减少切换开关随机切换内建天线的次数，可以延长天线系统的使用寿命。To sum up, the antenna system with switchable external antenna in the embodiment of the present invention has an external antenna connector that can be connected to an external antenna, and the external antenna connector can provide an external antenna when the communication quality of the built-in antenna is poor. The function of sending and receiving radio frequency signals. In addition, through the above-mentioned antenna system with switchable external antenna, it only needs to install an AND gate, a voltage source and an external antenna control circuit in a general wireless sharer to replace the communication function of switching the built-in antenna by a microcontroller, and There is no need to change the program code inside the microcontroller, so the cost can be effectively reduced. In addition, reducing the number of times the switch randomly switches the built-in antenna can prolong the service life of the antenna system.
以上所述仅为本发明的实施例，其并非用以限定本发明的专利保护范围。任何熟习相像技艺者，在不脱离本发明的精神与范围内，所作的变动及润饰的等效替换，仍为本发明的专利保护范围内。The above descriptions are only examples of the present invention, and are not intended to limit the scope of patent protection of the present invention. Anyone who is familiar with similar skills, without departing from the spirit and scope of the present invention, changes and equivalent replacements of modifications are still within the scope of patent protection of the present invention.
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| CN107612584A (en) * | 2017-10-19 | 2018-01-19 | 环鸿电子（昆山）有限公司 | Antenna system and control method for switchable external antenna |
| CN114063709A (en) * | 2020-07-29 | 2022-02-18 | 广达电脑股份有限公司 | Electronic device and method for antenna switching |
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| CN206532113U (en) * | 2017-02-16 | 2017-09-29 | 南京固邦电子科技有限公司 | Inside and outside antenna-switching device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612584A (en) * | 2017-10-19 | 2018-01-19 | 环鸿电子（昆山）有限公司 | Antenna system and control method for switchable external antenna |
| CN114063709A (en) * | 2020-07-29 | 2022-02-18 | 广达电脑股份有限公司 | Electronic device and method for antenna switching |
| CN114063709B (en) * | 2020-07-29 | 2024-04-19 | 广达电脑股份有限公司 | Electronic device and method for antenna switching |
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