WO2024109186A1 - 电子设备及其天线切换方法 - Google Patents

电子设备及其天线切换方法 Download PDF

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Publication number
WO2024109186A1
WO2024109186A1 PCT/CN2023/113199 CN2023113199W WO2024109186A1 WO 2024109186 A1 WO2024109186 A1 WO 2024109186A1 CN 2023113199 W CN2023113199 W CN 2023113199W WO 2024109186 A1 WO2024109186 A1 WO 2024109186A1
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WIPO (PCT)
Prior art keywords
metal edge
screen
antenna
electronic device
branch
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PCT/CN2023/113199
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English (en)
French (fr)
Inventor
王泽东
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Oppo广东移动通信有限公司
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Publication of WO2024109186A1 publication Critical patent/WO2024109186A1/zh

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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
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring

Definitions

  • the embodiments of the present disclosure relate to, but are not limited to, communication technology, and in particular to an electronic device and an antenna switching method thereof.
  • An embodiment of the present disclosure provides an electronic device and an antenna switching method thereof, which implements a circularly polarized antenna in an electronic device with a foldable screen to achieve satellite communication.
  • An embodiment of the present disclosure provides an electronic device, comprising: a foldable display screen, wherein the foldable display screen is folded to form a first screen and a second screen, wherein the first screen comprises a first metal edge, the second screen comprises a second metal edge, and the first metal edge is connected to the second metal edge, and the electronic device further comprises: an antenna branch located at the first metal edge, a switch circuit connected to the antenna branch, the switch circuit is further connected to a satellite communication channel and a cellular network channel respectively, and a processor connected to the switch circuit, wherein:
  • the processor is used to determine whether a switching condition is met, and when the switching condition is met, control the switch circuit to connect the path between the antenna branch and the satellite communication channel, wherein the switching condition includes that the angle between the first screen and the second screen of the folding display screen is within a preset angle range;
  • the switching circuit is used to switch the path between the antenna branch and the satellite communication channel or the cellular network channel according to the instruction of the processor, and the antenna branch forms a circularly polarized antenna with the first metal edge and the second metal edge.
  • the present application also provides an electronic device antenna switching method, wherein the electronic device comprises: a foldable display The foldable display screen is formed into a first screen and a second screen by folding, the first screen includes a first metal edge, the second screen includes a second metal edge, and the first metal edge is connected to the second metal edge, the electronic device further includes: an antenna branch located at the first metal edge, a switch circuit connected to the antenna branch, the switch circuit is also connected to a satellite communication channel and a cellular network channel respectively, and a processor connected to the switch circuit, and the switching method includes:
  • the processor determines whether a switching condition is met, and when the switching condition is met, controls the switching circuit to connect the path between the antenna branch and the satellite communication channel, the antenna branch and the first metal edge and the second metal edge form a circularly polarized antenna, and the switching condition includes that the angle between the first screen and the second screen of the foldable display screen is within a preset angle range.
  • the angle between the first screen and the second screen of the foldable display screen is within a preset angle range
  • the angle between the first metal edge and the second metal edge is also within a preset angle range.
  • the current phase difference between the first metal edge and the second metal edge is approximately 90 degrees, thereby forming a circularly polarized antenna with the first metal edge and the second metal edge, so that the electronic device can realize satellite communication function and improve user experience.
  • FIG1A is a schematic diagram of a folding screen in a folded state
  • FIG1B is a schematic diagram of a folding screen in an unfolded state
  • FIG1C is a schematic diagram showing that the angle between the first part and the second part of the folding screen is 90 degrees;
  • FIG2A is a schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure.
  • FIG2B is a schematic diagram of the IFA antenna in FIG2A ;
  • FIG3A is a schematic diagram of current direction when the current phase is 0 degrees
  • FIG3B is a schematic diagram of current direction when the current phase is 90 degrees
  • FIG4 is a current phase difference between point P1 in FIG3A and point P2 in FIG3B ;
  • FIG5A is a left-hand polarization diagram of the antenna
  • FIG5B is a right-hand polarization diagram of the antenna
  • FIG5C is a perspective view of the antenna axial ratio
  • FIG5D is a plan view of the antenna axial ratio x-plane
  • FIG. 6 is a flow chart of an antenna switching method according to an embodiment of the present disclosure.
  • first and second used in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • connection in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.
  • the disclosed embodiment provides an electronic device.
  • the electronic device has a foldable screen, and the electronic device can be a mobile phone, a tablet computer, an e-book, a wearable device, an augmented reality (AR)/virtual reality (VR) device, a laptop computer, or a personal digital assistant (PDA) or other electronic device with communication function.
  • AR augmented reality
  • VR virtual reality
  • PDA personal digital assistant
  • the folding screen in the electronic device may have a folded state and an unfolded state.
  • the folded state forms at least two screens by folding.
  • the at least two screens formed after folding may be multiple independent screens or a complete screen with an integrated structure. It is just folded to form at least two parts.
  • the folding screen can be folded to form a first screen and a second screen.
  • the folded state is shown in Figure 1A
  • the unfolded state is shown in Figure 1B.
  • the folding screen can be a flexible display screen.
  • the first screen includes a first metal frame (hereinafter referred to as the metal edge)
  • the second screen includes a second metal edge
  • the first metal edge is connected to the second metal edge
  • an antenna branch is provided at the first metal edge.
  • the antenna branch can also be provided at the second metal edge.
  • an angle is formed between the first screen and the second screen, and the angle is 90° in Figure 1C.
  • An embodiment of the present disclosure provides an electronic device, as shown in FIG2A , wherein the electronic device includes a foldable display screen, wherein the foldable display screen is folded to form a first screen and a second screen, wherein the first screen includes a first metal edge, and the second screen includes a second metal edge, and the first metal edge is connected to the second metal edge (the connection point is located at the folding axis), and the electronic device further includes: an antenna branch 10 located at the first metal edge, a tuning circuit 20 (optional) connected to the antenna branch 10, a switch circuit 30 connected to the tuning circuit 20, wherein the switch circuit 30 is also connected to a satellite communication channel and a cellular network channel respectively, and a processor 40 connected to the switch circuit 30, wherein:
  • the processor 40 is used to determine whether a switching condition is met, and when the switching condition is met, control the switch circuit 30 to connect the path between the antenna branch and the satellite communication channel, and the switching condition includes that the angle between the first screen and the second screen of the foldable display screen is within a preset angle range;
  • the switch circuit 30 is used to switch the path between the antenna branch 10 and the satellite communication channel or the cellular network channel according to the instruction of the processor 40, so that the antenna branch 10 and the first metal edge and the second metal edge form a circularly polarized antenna.
  • the same angle is formed between the first metal edge located on the first screen and the second metal edge located on the second screen.
  • the antenna branch can excite an orthogonal mode of the floor current (the current direction on the first metal edge is nearly orthogonal to the current direction on the second metal edge), so that the antenna branch and the first metal edge and the second metal edge form a circularly polarized antenna, thereby realizing the satellite communication function of the electronic device.
  • the satellite communication function described in this article refers to voice calls and/or information transmission through satellite communication channels.
  • the antenna branch is an inverted F antenna (IFA), and in other embodiments, the antenna branch may also be a suspended antenna.
  • the antenna branch may be an independent antenna dedicated to satellite communication, or may be an antenna multiplexed with a cellular network, that is, a cellular network antenna is multiplexed for satellite communication.
  • the angle between the first screen and the second screen of the foldable display screen is within a preset angle range, including: the angle between the first screen and the second screen of the foldable display screen is close to 90 degrees, specifically,
  • the preset angle range can be, for example, 90° ⁇ 20°.
  • the antenna branch can excite an orthogonal mode of the floor current.
  • the orthogonal mode means that the current on the antenna branch makes the current directions on the first metal edge and the second metal edge approximately vertical.
  • the orthogonal mode may include mode 1 and mode 2.
  • Mode 1 is the current distribution mode of the first metal edge
  • mode 2 is the current distribution mode of the second metal edge.
  • the current is mainly distributed on the first metal edge, that is, mode 1
  • the current direction is as shown in Figure 3A.
  • the current is mainly distributed on the second metal edge, that is, mode 2, and the current direction is as shown in Figure 3B.
  • the phase difference is approximately 90°
  • the direction of the current is approximately vertical, then a circularly polarized antenna can be formed to better realize satellite communication.
  • the antenna branch includes a first radiating branch, and a second radiating branch and a third radiating branch connected to the first radiating branch, the first radiating branch is parallel to the first metal edge, the first radiating branch is connected to the second radiating branch toward the end point of the second metal edge, the second radiating branch has a first connection point (material connection point) with the first metal edge, the third radiating branch has a second connection point (feeding point) with the first metal edge, and the second connection point is connected to the switching circuit; the distance between the connection point between the first metal edge and the second metal edge and the first connection point makes the first metal edge and the second metal edge form a circularly polarized antenna, specifically, the distance between the connection point between the first metal edge and the second metal edge and the first connection point makes the phase difference between the current on the first metal edge and the current on the second metal edge approach 90 degrees, that is, close to 90 degrees at the maximum.
  • the connection point between the third radiating branch and the first radiating branch can be
  • the phase difference between the current of the first metal edge and the current of the second metal edge can be close to 90 degrees.
  • the specific distance can be determined based on simulation. When different axial ratios are required, the required current phase difference is different, so the distance between point A and point C can be determined as needed.
  • phase curves of any point P1 on the first metal edge in FIG. 3A and point P2 on the second metal edge symmetrical to point P1 about the center of the rotation axis are shown in FIG. 4 . It can be seen from the figure that the phase difference between the current at point P1 and the current at point P2 approaches 90 degrees.
  • Figures 5A-5D show the system far-field radiation pattern of the circularly polarized antenna when the angle between the first screen and the second screen meets the preset angle range (approximately 90°).
  • Figure 5A is a left-hand circular polarization pattern
  • Figure 5B is a right-hand circular polarization pattern. It can be seen that, toward the sky, the far-field left-hand circular polarization energy is stronger, and the right-hand circular polarization energy is weaker.
  • Figure 5C is a three-dimensional diagram of the axial ratio of the circularly polarized antenna
  • Figure 5D is a plan view of the axial ratio of the circularly polarized antenna (specifically the x plane in Figure 5C). It can be seen from the figure that the axial ratio toward the sky and along the second metal edge is smaller, and the circular polarization characteristics are relatively better.
  • the circularly polarized antenna mainly excites the transverse current of the floor, the upper hemisphere of its far-field radiation accounts for more than 50%, which can ensure the communication performance of the antenna.
  • the electronic device may also include a gesture recognition sensor connected to the processor.
  • the processor determines whether the angle between the first screen and the second screen of the foldable display screen is within a preset angle range through the gesture parameters sent by the gesture recognition sensor.
  • the gesture recognition sensor may be one or more of the following devices: a gyroscope, an accelerometer, and an electronic compass.
  • the tuning circuit can be used to increase the upper hemisphere proportion in the far-field radiation direction of the electronic device.
  • the antenna branches can be connected to different paths in advance, and the corresponding tuning circuit element parameters can be configured to ensure that under the path, the upper hemisphere proportion in the far-field radiation direction of the electronic device exceeds the preset threshold. For example, when the antenna branch is connected to a satellite communication channel, by adjusting the circuit elements and parameters in the tuning circuit on the tuning path, the tuning circuit configuration that optimizes the upper hemisphere proportion in the far-field radiation direction of the electronic device is selected, and the corresponding relationship between the path state and the tuning circuit configuration is recorded.
  • the tuning circuit configuration that optimizes the upper hemisphere proportion in the far-field radiation direction of the electronic device is selected, and the corresponding relationship between the path state and the tuning circuit configuration is recorded.
  • the processor switches the switch circuit to connect different channels, the tuning circuit adopts the configuration parameters corresponding to the current channel.
  • the tuning circuit may include an inductor, a capacitor, a series connection of an inductor and a capacitor, or a parallel connection of an inductor and a capacitor, etc.
  • the tuning circuit may also include a switch element, and by setting the switch element, a combination of different tuning circuits may be realized to meet the performance requirements of the antenna.
  • the switch circuit may be, for example, a single-pole double-throw switch (SPDT).
  • SPDT single-pole double-throw switch
  • the switching condition may also include determining whether satellite communication is currently needed, for example, whether the user opens satellite communication software and needs to make a voice call or send a message. When satellite communication is needed, the switching condition is considered to be met.
  • the processor when the processor determines that the user closes the satellite communication software, the processor controls the switch circuit to disconnect the access to the satellite communication channel.
  • the disclosed embodiment is based on the characteristics of the folding screen and combines the actual needs of satellite communication. It shares the communication antenna with the cellular network, does not add additional antennas, and does not occupy additional metal frame space.
  • good circular polarization characteristics in the upper hemisphere direction can be achieved, and it has a good upper hemisphere directional pattern ratio to achieve better satellite communication functions.
  • the cellular networks described herein include, but are not limited to, GSM (Global System for Mobile communications) networks, CDMA (code division multiple access) networks, 3G (third generation mobile communication technology) networks, FDMA (frequency division multiple access) networks, address), TDMA (Time division multiple access), PDC (Personal Digital Cellular, 2G mobile phone communication standard), TACS (Total Access Communications System, full access communication system), AMPS (Advanced Mobile Phone System, advanced mobile phone system), etc.
  • GSM Global System for Mobile communications
  • CDMA code division multiple access
  • 3G third generation mobile communication technology
  • FDMA frequency division multiple access
  • address time division multiple access
  • PDC Personal Digital Cellular, 2G mobile phone communication standard
  • TACS Total Access Communications System, full access communication system
  • AMPS Advanced Mobile Phone System, advanced mobile phone system
  • the present disclosure also provides an antenna switching method for an electronic device, which is applicable to the above electronic device. As shown in FIG6 , the switching method includes:
  • Step S1 the processor determines whether a switching condition is met
  • Step S2 when a switching condition is met, controls the switching circuit to connect the path between the antenna branch and the satellite communication channel, the antenna branch and the first metal edge and the second metal edge form a circularly polarized antenna, and the switching condition includes that the angle between the first screen and the second screen of the foldable display screen is within a preset angle range.
  • the switching condition further includes determining whether satellite communication needs to be used currently;
  • controlling the switch circuit to connect the path between the antenna branch and the satellite communication channel when the switching condition is met includes: the processor determines that the angle between the first screen and the second screen of the foldable display screen is within a preset angle range, and satellite communication is currently required, controlling the switch circuit to connect the path between the antenna branch and the satellite communication channel.
  • the preset angle range may be, for example, 90° ⁇ 20°.
  • step S2 when the switching condition is met, the angle between the first screen and the second screen of the foldable display screen approaches 90 degrees, so that the angle between the current direction of the first metal edge and the current direction of the second metal edge approaches 90 degrees, and the antenna branch current makes the difference between the current phase of the first metal edge and the current phase of the second metal edge approach 90 degrees, and the first metal edge and the second metal edge form a circularly polarized antenna.
  • the current phase of the antenna branch is 0deg
  • the current is distributed on the first metal edge
  • the current phase of the antenna branch is 90deg
  • the current is distributed on the second metal edge
  • the angle between the first metal edge and the second metal edge is within the preset angle range, the first metal edge and the second metal edge form a circularly polarized antenna.
  • the posture recognition sensor identifies the state of the folding screen and uses the switching circuit to switch the IFA antenna from the cellular network channel to the satellite communication channel.
  • the IFA antenna can stimulate the current of the metal frame (the first metal edge and the second metal edge), and can achieve a phase difference of about 90deg, so good circular polarization can be achieved.
  • the excitation is the transverse mode of the frame (that is, the current of the first metal edge and the current of the second metal edge), it can achieve a good far-field upper hemisphere occupancy (greater than 50%), and at the same time achieve good satellite communication and cellular communication sharing the same antenna.

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Abstract

提供了一种电子设备及其天线切换方法，所述电子设备包括：可折叠显示屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，第一屏包括第一金属边，第二屏包括第二金属边，且第一金属边与第二金属边相连，电子设备还包括：位于第一金属边的天线枝节，与天线枝节连接的开关电路，开关电路还分别连接卫星通信通道和蜂窝网络通道，以及与开关电路连接的处理器，其中：处理器用于判断是否满足切换条件，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路；开关电路用于根据处理器的指示切换天线枝节与卫星通信通道或者与蜂窝网络通道之间的通路，天线枝节与第一金属边和第二金属边形成圆极化天线。

Description

电子设备及其天线切换方法
本申请要求于2022年11月22日提交中国专利局、申请号为202211468568.7、申请名称为“一种电子设备及其天线切换方法”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。
技术领域
本公开实施例涉及但不限于通信技术，尤指一种电子设备及其天线切换方法。
背景技术
随着技术的发展，折叠屏、异形屏不断的使用，且人们对于卫星通信应用越来越重视，对于集成于可移动终端的卫星通信功能有迫切的需求。由于卫星天线为圆极化天线，为了优化卫星通信体验，如何在折叠屏移动终端处设计圆极化天线是一个具有极大挑战的难题。
发明内容
本公开实施例提供了一种电子设备及其天线切换方法，在具有折叠屏的电子设备实现圆极化天线，以实现卫星通信。
本公开实施例提供一种电子设备，包括：可折叠显示屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，所述第一屏包括第一金属边，所述第二屏包括第二金属边，且所述第一金属边与所述第二金属边相连，所述电子设备还包括：位于所述第一金属边的天线枝节，与所述天线枝节连接的开关电路，所述开关电路还分别连接卫星通信通道和蜂窝网络通道，以及与所述开关电路连接的处理器，其中：
所述处理器用于判断是否满足切换条件，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述切换条件包括所述折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内；
所述开关电路用于根据所述处理器的指示切换所述天线枝节与所述卫星通信通道或者与所述蜂窝网络通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线。
本申请实施例还提供了一种电子设备天线切换方法，所述电子设备包括：可折叠显示 屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，所述第一屏包括第一金属边，所述第二屏包括第二金属边，且所述第一金属边与所述第二金属边相连，所述电子设备还包括：位于所述第一金属边的天线枝节，与所述天线枝节连接的开关电路，所述开关电路还分别连接卫星通信通道和蜂窝网络通道，以及与所述开关电路连接的处理器，所述切换方法包括：
所述处理器判断是否满足切换条件，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线，所述切换条件包括所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内。
采用本公开实施例的方案，当可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内，使得所述第一金属边和第二金属边之间的夹角在预设角度范围内，再结合天线枝节的发送电流相位，使所述第一金属边和第二金属边电流相位差近似90度，从而使第一金属边和第二金属边形成圆极化天线，以使该电子设备能够实现卫星通信功能，提升用户体验。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
附图用来提供对本申请技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本申请的技术方案，并不构成对本申请技术方案的限制。
图1A为折叠屏处于折叠状态的示意图；
图1B为折叠屏处于展开状态的示意图；
图1C为折叠屏第一部分与第二部分夹角为90度示意图；
图2A为本公开实施例电子设备的组成结构示意图；
图2B为图2A中IFA天线的示意图；
图3A为电流相位为0度时电流方向示意图；
图3B为电流相位为90度时电流方向示意图；
图4为图3A中P1点与图3B中P2点电流相位差；
图5A为天线左旋极化图；
图5B为天线右旋极化图；
图5C为天线轴比立体图；
图5D为天线轴比x平面的平面图；
图6为本公开实施例天线切换方法的流程图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚明白，下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使本申请的公开内容更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
可以理解，本申请所使用的术语“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”的特征可以明示或隐含地包括至少一个该特征。在本申请的描述中，“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。
可以理解，以下实施例中的“连接”，如果被连接的电路、模块、单元等相互之间具有电信号或数据的传递，则应理解为“电连接”、“通信连接”等。
在此使用时，单数形式的“一”、“一个”和“所述/该”也可以包括复数形式，除非上下文清楚指出另外的方式。还应当理解的是，术语“包括/包含”或“具有”等指定所陈述的特征、整体、步骤、操作、组件、部分或它们的组合的存在，但是不排除存在或添加一个或更多个其他特征、整体、步骤、操作、组件、部分或它们的组合的可能性。同时，在本说明书中使用的术语“和/或”包括相关所列项目的任何及所有组合。
本公开实施例提供了一种电子设备。所述电子设备具有可折叠屏，所述电子设备可以是手机、平板电脑、电子书、可穿戴设备、增强现实(AR)/虚拟现实(VR)设备、笔记本电脑、或个人数字助理(Personal Digital Assistant，PDA)等具有通信功能的电子设备。
在电子设备中的折叠屏可具有折叠状态和展开状态，折叠状态通过折叠形成至少两个屏，折叠后形成的至少两个屏可以是独立的多个屏，也可以为一体结构的完整屏， 只是被折叠形成了至少两部分。以折叠屏包括两个屏为例，折叠屏可折叠形成第一屏和第二屏。折叠状态如图1A所示，展开状态如图1B所示。所述折叠屏可以是柔性显示屏。如图1C所示，第一屏包括第一金属边框(下文简称金属边)，第二屏包括第二金属边，第一金属边与第二金属边相连接，所述第一金属边处设置有天线枝节，在其他实施例中，也可以将天线枝节设置在第二金属边处。所述折叠屏在折叠过程中第一屏与第二屏之间形成有夹角，图1C中夹角为90°。
本公开实施例提供了一种电子设备，如图2A所示，所述电子设备包括可折叠显示屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，所述第一屏包括第一金属边，所述第二屏包括第二金属边，且所述第一金属边与所述第二金属边相连(连接点位于折叠轴线)，所述电子设备还包括：位于所述第一金属边的天线枝节10，与所述天线枝节10连接的调谐电路20(可选)，与所述调谐电路20连接的开关电路30，所述开关电路30还分别连接卫星通信通道和蜂窝网络通道，与所述开关电路30连接的处理器40，其中：
所述处理器40用于判断是否满足切换条件，在满足切换条件时控制所述开关电路30连通所述天线枝节与所述卫星通信通道之间的通路，所述切换条件包括所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内；
所述开关电路30用于根据所述处理器40的指示切换所述天线枝节10与所述卫星通信通道或者与所述蜂窝网络通道之间的通路，以使所述天线枝节10与所述第一金属边和第二金属边形成圆极化天线。
当可折叠显示屏的第一屏和第二屏之间的夹角在预设角度范围内时，使得位于第一屏的第一金属边与位于第二屏的第二金属边之间也形成同样的夹角，天线枝节可以激励出地板电流的正交模式(第一金属边上的电流方向与第二金属边上的电流方向接近正交)，使得所述天线枝节与所述第一金属边和第二金属边形成圆极化天线，从而可以实现电子设备的卫星通信功能。
本文中所述卫星通信功能是指通过卫星通信通道进行语音通话，和/或信息传输。
在示例性实施例中，所述天线枝节的天线形式为倒F天线(IFA)，在其他实施例中所述天线枝节还可以是悬浮天线。本实施例中所述天线枝节可以是独立存在的专用于卫星通信的天线，或者可以是与蜂窝网络复用的天线，即将蜂窝网络天线复用于进行卫星通信。
在示例性实施例中，所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内包括：所述可折叠显示屏第一屏和第二屏之间的夹角趋近于90度，具体地，所述 预设角度范围例如可以是90°±20°，当第一屏与第二屏之间的夹角趋近于90度时，位于第一屏的第一金属边与位于第二屏的第二金属边之间也形成同样的夹角，此时该天线枝节可以激励出地板电流的正交模式，该正交模式是指：该天线枝节上的电流使得第一金属边和第二金属边上电流方向近似垂直，具体地，该正交模式可以包括模式1和模式2，模式1是第一金属边的电流分布模式，模式2是第二金属边的电流分布模式；当电流相位为0度时(phase＝0deg)，电流主要分布在第一金属边，即模式1，电流方向如图3A所示，当电流相位为90度时(phase＝90deg)，电流主要分布在第二金属边，即模式2，电流方向如图3B所示，相位差近似90°时，电流的方向近似垂直，则可以形成圆极化天线，以更好地实现卫星通信。
在示例性实施例中，如图2B所示，所述天线枝节包括第一辐射枝节、以及与所述第一辐射枝节连接的第二辐射枝节和第三辐射枝节，所述第一辐射枝节与所述第一金属边平行，所述第一辐射枝节朝向第二金属边的端点连接所述第二辐射枝节，所述第二辐射枝节与所述第一金属边具有第一连接点(连料位)，所述第三辐射枝节与所述第一金属边具有第二连接点(馈电点)，所述第二连接点连接所述开关电路；所述第一金属边与第二金属边的连接点与所述第一连接点之间的距离使所述第一金属边和第二金属边形成圆极化天线，具体地，所述第一金属边与第二金属边的连接点与所述第一连接点之间的距离使所述第一金属边上的电流与所述第二金属边上的电流的相位差趋近于90度，即最大程度接近90度。第三辐射枝节与第一辐射枝节的连接点可按照常规设计，本文对此不做限定。
通过设计IFA天线的连料位(图2A中A点)与两个金属边的连接点(图2A中C点)之间的距离，可使得第一金属边电流和第二金属边电流相位相差趋近于90度，具体的距离可根据仿真确定。当需要不同轴比时，需要的电流相位差不同，由此A点和C点的距离可根据需要确定。
图3A中第一金属边上任意一点P1，以及与P1点关于转轴中心对称的第二金属边上的点P2的相位曲线如图4所示，由图可见，P1点电流与P2点电流相位差趋近于90度。
图5A-5D给出了第一屏与第二屏之间的夹角满足该预设角度范围时(近似90°)时圆极化天线的系统远场方向图，图5A是左旋圆极化图，图5B是右旋圆极化图，可见，朝天空方向，远场左旋圆极化能量更强，右旋圆极化能量较弱。图5C为圆极化天线轴比的立体图，图5D为圆极化天线轴比的平面图(具体为图5C中x平面)，由图可见，朝向天空方向，且沿第二金属边方向的轴比值较小，圆极化特性相对更好。
另外，该圆极化天线由于主要激励地板横向电流，其远场辐射上半球占比也大于50％，能够保证天线的通信性能。
所述电子设备还可包括与处理器连接的姿态识别传感器，处理器通过该姿态识别传感器发送的姿态参数，判断所述可折叠显示屏第一屏和第二屏之间的夹角是否在预设角度范围内，所述姿态识别传感器可以是以下器件的一种或多种：陀螺仪、加速度计和电子罗盘。
所述调谐电路可用于提高电子设备远场辐射方向上半球占比，可以预先使天线枝节连接不同的通路，配置相应的调谐电路元件参数，以保证在该通路下，电子设备的远场辐射方向上半球占比超过预设阈值。例如当天线枝节连接卫星通信通道时，通过调整调谐通路上调谐电路中的电路元件及参数，选择使电子设备远场辐射方向上半球占比最优的调谐电路配置，记录该通路状态与调谐电路配置的对应关系。同理，当天线枝节连接蜂窝网络通道时，通过调整调谐通路上调谐电路中的电路元件及参数，选择使电子设备远场辐射方向上半球占比最优的调谐电路配置，记录该通路状态与调谐电路配置的对应关系。当处理器切换开关电路连接不同的通道时，调谐电路采用当前通道对应的配置参数。
在示例性实施例中，所述调谐电路可以包括电感、电容、电感与电容的串联或者电感与电容的并联等。此外，所述调谐电路中还可以包括开关元件，通过设置开关元件，可以实现不同调谐电路的组合，以满足天线的性能要求。
在示例性实施例中，所述开关电路例如可以是单刀双掷开关(SPDT)。
在示例性实施例中，所述切换条件还可包括判断当前是否需要使用卫星通信，例如用户是否打开卫星通信软件且需要进行语音通话，或者发送信息，当需要使用卫星通信时，认为满足切换条件。
在示例性实施例中，当处理器判断用户关闭卫星通信软件时，则控制开关电路断开与卫星通信通道的通路。
本公开实施例从折叠屏的特点出发，结合卫星通信实际需求，与蜂窝网络共用通信天线，并不会增加额外天线，不会占据额外的金属边框空间。利用折叠屏手机的双屏垂直状态，可以实现上半球方向的良好圆极化特性，并且具有良好的上半球方向图占比，以实现更好的卫星通信功能。
本文所述蜂窝网络包括但不限于：GSM(Global System for Mobile communications，全球移动通信系统)网络、CDMA(code division multiple access，码分多址)网络、3G(第三代移动通信技术)网络、FDMA(frequency division multiple access，频分多 址)、TDMA(Time division multiple access，时分多址)、PDC(Personal Digital Cellular，2G移动电话通信标准)、TACS(Total Access Communications System，全入网通信系统)、AMPS(Advanced Mobile Phone System，高级移动电话系统)等。
本公开实施例还提供一种电子设备的天线切换方法，适用于上述电子设备，如图6所示，所述切换方法包括：
步骤S1，所述处理器判断是否满足切换条件；
步骤S2，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线，所述切换条件包括所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内。
在示例性实施例中，所述切换条件还包括判断当前是否需要使用卫星通信；
在示例性实施例中，在上述步骤S2中，所述在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，包括：所述处理器判断所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内，且当前需要使用卫星通信时，控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路。
在示例性实施例中，所述预设角度范围例如可以为90°±20°。
在上述方法中，步骤S2中，在满足所述切换条件时，所述可折叠显示屏第一屏和第二屏之间的夹角趋近于90度，使所述第一金属边电流方向和所述第二金属边电流方向之间的夹角趋近于90度，所述天线枝节电流使所述第一金属边电流相位与所述第二金属边电流相位的差趋近于90度，所述第一金属边和第二金属边形成圆极化天线，具体地，所述天线枝节的电流相位为0deg时，电流分布在第一金属边，所述天线枝节的电流相位为90deg时，电流分布在第二金属边，且由于所述第一金属边和第二金属边之间的夹角在所述预设角度范围内，所述第一金属边和第二金属边形成圆极化天线。
当需要进行卫星通信时，姿态识别传感器识别折叠屏的状态，利用开关电路，将IFA天线从蜂窝网络通道切换至卫星通信通道，通过IFA天线可以激励金属边框(第一金属边和第二金属边)的电流，并可以实现约90deg相位差，则可以实现良好的圆极化，此外，由于激励的是边框横模(即第一金属边的电流和第二金属边的电流)，更能实现良好远场上半球占比(大于50％)，同时实现良好的卫星通信和蜂窝通信共天线。
虽然本申请所揭露的实施方式如上，但所述的内容仅为便于理解本申请而采用的实施方式，并非用以限定本申请。任何本申请所属领域内的技术人员，在不脱离本申 请所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本申请的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (10)

  1. 一种电子设备，包括：可折叠显示屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，所述第一屏包括第一金属边，所述第二屏包括第二金属边，且所述第一金属边与所述第二金属边相连，所述电子设备还包括：位于所述第一金属边的天线枝节，与所述天线枝节连接的开关电路，所述开关电路还分别连接卫星通信通道和蜂窝网络通道，以及与所述开关电路连接的处理器，其中：
    所述处理器用于判断是否满足切换条件，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述切换条件包括所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内；
    所述开关电路用于根据所述处理器的指示切换所述天线枝节与所述卫星通信通道或者与所述蜂窝网络通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线。
  2. 根据权利要求1所述的电子设备，
    所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内包括：所述可折叠显示屏第一屏和第二屏之间的夹角趋近于90度。
  3. 根据权利要求2所述的电子设备，
    所述天线枝节包括第一辐射枝节、以及与所述第一辐射枝节连接的第二辐射枝节和第三辐射枝节，所述第一辐射枝节与所述第一金属边平行，所述第一辐射枝节朝向第二金属边的端点连接所述第二辐射枝节，所述第二辐射枝节与所述第一金属边具有第一连接点，所述第三辐射枝节与所述第一金属边具有第二连接点，所述第二连接点连接所述开关电路；所述第一金属边与第二金属边的连接点与所述第一连接点之间的距离使所述第一金属边和第二金属边形成圆极化天线。
  4. 根据权利要求3所述的电子设备，
    所述第一金属边与第二金属边的连接点与所述第一连接点之间的距离使所述第一金属边和第二金属边形成圆极化天线，包括：所述第一金属边与第二金属边的连接点与所述第一连接点之间的距离使所述第一金属边电流和第二金属边电流相位差趋近于90度。
  5. 根据权利要求1所述的电子设备，
    所述电子设备还包括与所述处理器连接的姿态识别传感器；
    所述处理器用于通过所述姿态识别传感器发送的姿态参数，判断所述折叠显示屏第一屏和第二屏之间的夹角是否在预设角度范围内。
  6. 根据权利要求3所述的电子设备，所述电子设备还包括位于所述开关电路与所述 天线枝节之间的调谐电路，所述调谐电路包括电感、电容、电感与电容的串联或者电感与电容的并联。
  7. 一种电子设备天线切换方法，所述电子设备包括：可折叠显示屏，所述可折叠显示屏通过折叠形成第一屏和第二屏，所述第一屏包括第一金属边，所述第二屏包括第二金属边，且所述第一金属边与所述第二金属边相连，所述电子设备还包括：位于所述第一金属边的天线枝节，与所述天线枝节连接的开关电路，所述开关电路还分别连接卫星通信通道和蜂窝网络通道，以及与所述开关电路连接的处理器，所述切换方法包括：
    所述处理器判断是否满足切换条件，在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线，所述切换条件包括所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内。
  8. 根据权利要求7所述的电子设备天线切换方法，所述切换条件还包括判断当前是否需要使用卫星通信；
    所述在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，包括：所述处理器判断所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内，且当前需要使用卫星通信时，控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路。
  9. 根据权利要求7所述的电子设备天线切换方法，
    所述可折叠显示屏第一屏和第二屏之间的夹角在预设角度范围内包括：所述可折叠显示屏第一屏和第二屏之间的夹角趋近于90度。
  10. 根据权利要求9所述的电子设备天线切换方法，
    所述在满足切换条件时控制所述开关电路连通所述天线枝节与所述卫星通信通道之间的通路，所述天线枝节与所述第一金属边和第二金属边形成圆极化天线，包括：
    在满足所述切换条件时，所述可折叠显示屏第一屏和第二屏之间的夹角趋近于90度，使所述第一金属边电流方向和所述第二金属边电流方向之间的夹角趋近于90度，所述天线枝节电流使所述第一金属边电流相位与所述第二金属边电流相位的差趋近于90度，所述第一金属边和第二金属边形成圆极化天线。
PCT/CN2023/113199 2022-11-22 2023-08-15 电子设备及其天线切换方法 WO2024109186A1 (zh)

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US20080150812A1 (en) * 2006-12-25 2008-06-26 Fujitsu Limited Patch antenna
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CN112751160A (zh) * 2019-10-31 2021-05-04 华为技术有限公司 可折叠电子设备
CN113972479A (zh) * 2021-10-14 2022-01-25 深圳市锐尔觅移动通信有限公司 一种天线组件及电子设备
EP4012839A1 (fr) * 2020-12-11 2022-06-15 Commissariat À L'Énergie Atomique Et Aux Énergies Alternatives Réseau antennaire à rayonnement directif
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Publication number Priority date Publication date Assignee Title
US20080150812A1 (en) * 2006-12-25 2008-06-26 Fujitsu Limited Patch antenna
CN112751160A (zh) * 2019-10-31 2021-05-04 华为技术有限公司 可折叠电子设备
CN112003022A (zh) * 2020-09-27 2020-11-27 南京信息工程大学 一种满足北斗卫星导航的双频圆极化微带天线
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