WO2017185364A1 - 无线用户终端保护装置 - Google Patents

无线用户终端保护装置 Download PDF

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Publication number
WO2017185364A1
WO2017185364A1 PCT/CN2016/080797 CN2016080797W WO2017185364A1 WO 2017185364 A1 WO2017185364 A1 WO 2017185364A1 CN 2016080797 W CN2016080797 W CN 2016080797W WO 2017185364 A1 WO2017185364 A1 WO 2017185364A1
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WIPO (PCT)
Prior art keywords
antenna
user terminal
wireless user
coupling
wireless
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PCT/CN2016/080797
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English (en)
French (fr)
Inventor
袁道喜
施安龙
吴府叡
Original Assignee
深圳市联合东创科技有限公司
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Application filed by 深圳市联合东创科技有限公司 filed Critical 深圳市联合东创科技有限公司
Priority to PCT/CN2016/080797 priority Critical patent/WO2017185364A1/zh
Publication of WO2017185364A1 publication Critical patent/WO2017185364A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a protection device capable of enhancing a signal of a wireless user terminal.
  • Wireless communication technology is a communication method that exchanges information using electromagnetic wave signals that can propagate in free space.
  • wireless communication technology In recent years, in the field of information and communication, the fastest growing and most widely used is wireless communication technology. The impact of wireless communication technology is undisputed: about 150,000 people become new wireless users every day, and the number of wireless users worldwide has exceeded 200 million.
  • handheld terminals such as mobile phones, tablet computers, mobile data collectors, etc. are one of the important devices for wireless communication transmission.
  • Various electromagnetic wave signals can be transmitted through 2G, 3G, 4G and other wireless networks, so the quality of electromagnetic wave signals will be good or bad.
  • the built-in antenna in the handheld terminal can realize the normal transmission of electromagnetic wave signals.
  • the handheld terminal is away from the coverage area of the base station, the electromagnetic wave signal is blocked by the building or the signal is received by the handheld terminal.
  • the built-in antenna in the handheld terminal can not achieve the normal transmission of electromagnetic wave signals in some areas, affecting the transmission of user data.
  • wireless user terminal refers to a device that can use a wireless network such as a mobile phone, a tablet computer, a mobile data collector, a notebook computer, or a desktop computer.
  • the existing solution is to add a signal transmitting device to increase the signal coverage area, or to replace a more powerful signal transmitting device to enhance the signal, such as adding or replacing a base station, a wireless router.
  • the prior art enhances the signal source to make the signal in the coverage area stronger and wider in coverage, thereby enhancing the strength of the end user signal within the coverage of the signal transmitting device.
  • the strength of the signal can be increased to some extent within a certain range, the base station equipment is expensive, the replacement cost is large, and the enhanced signal area is fixed and cannot move as the user moves.
  • the protective case of the existing mobile phone case or tablet although a wide variety, is limited to protecting the phone or tablet
  • the computer has a single function and does not help the signal strength of the phone or tablet.
  • a technical problem that needs to be solved urgently by those skilled in the art is to propose a strategy for enhancing the signal of the wireless user terminal, which is not limited to a fixed location, and can increase the strength of the signal of the wireless user terminal, and the required cost is low.
  • the present invention provides a wireless user terminal protection device, which can effectively improve the signal of the wireless user terminal by the protection device of the present invention, and is not limited by the location.
  • the present invention discloses a wireless user terminal protection device.
  • the protection device includes a coupling antenna and a body fixed on the wireless user terminal, and a groove is disposed at a coupling area of the corresponding wireless user terminal of the body.
  • a brace engaged with the groove is movably disposed in the groove, and a coupling antenna is built in the brace;
  • the coupling antenna has an end head, and when the brace moves in the groove The end of the coupled antenna is located in a coupling region of the wireless user terminal antenna such that the coupled antenna is coupled to the wireless user terminal antenna; wherein the coupling region is a wireless user terminal
  • the feed point of the antenna is a center of the sphere formed by a radius of 1/10 of the wavelength of the signal transmitted by the wireless user terminal.
  • the wireless user terminal to which the protection device of the present invention is applied may be a mobile phone, a tablet computer or a mobile data collector.
  • the coupling antenna of the present invention is made of an antenna material of a general user terminal, such as copper, copper alloy, aluminum or aluminum alloy; or gold-plated or nickel-plated stainless steel; or may be a flexible circuit board.
  • a general user terminal such as copper, copper alloy, aluminum or aluminum alloy; or gold-plated or nickel-plated stainless steel; or may be a flexible circuit board.
  • the shape of the coupling antenna differs depending on the shape of the antenna of the wireless subscriber terminal, and preferably, it may be an elongated strip-shaped strip-shaped body having a long strip shape.
  • the coupling antenna is a L-shaped chip body, and the L-type coupling antenna has a long end and a short end.
  • the long end is located in a coupling area of the wireless user terminal antenna, the signal enhancement of the wireless user terminal The effect is more obvious.
  • the length l of the coupled antenna is ⁇ /4
  • the signal enhancement effect of the wireless user terminal is more obvious, wherein ⁇ is the wavelength of the wireless user terminal receiving and transmitting signals.
  • the length of the general coupling antenna ranges from ⁇ /4 ⁇ 5mm.
  • the coupled antenna and the user terminal antenna When the groove is disposed perpendicular to the lower edge of the body, the coupled antenna and the user terminal antenna have the largest coupling amount and the highest signal strength.
  • the protection device of the present invention is a protective case or a protective cover of a wireless user terminal.
  • the protection device disclosed by the present invention can effectively enhance the signal of the wireless user terminal by providing a coupling antenna at the position of the coupling antenna of the corresponding wireless user terminal; compared with the method of adding or replacing the high efficiency base station and the router, the present invention is used.
  • the way to enhance the signal the wireless user terminal is in any place, the signal can be effectively improved; the existing protective case or protective cover is small and the cost is low; the coupled antenna does not need additional power supply, saves energy, is more environmentally friendly;
  • the antenna is mounted accurately.
  • FIG. 1 is a schematic diagram showing the principle of electrical coupling between a wireless user terminal antenna and a coupled antenna according to the present invention
  • FIG. 2 is a schematic structural diagram of an embodiment of the present invention applied to a mobile phone
  • FIG. 3 is a schematic diagram of installation conditions of the present invention installed on a mobile phone
  • Figure 4 is a schematic diagram showing the results of passive testing of the iPhone 5 mobile phone using the protective case of Figure 2.
  • One of the core concepts of the embodiments of the present invention is to provide a protection device for a wireless user terminal, such as adding a coupling antenna to a protective cover and a protective case, so that the coupled antenna can be accurately coupled with the antenna of the wireless user terminal, thereby increasing The strength of the signal received and transmitted by the large wireless user terminal antenna.
  • FIG. 1 is a schematic diagram showing the principle of electrical coupling of a wireless user terminal antenna and a coupled antenna according to the present invention.
  • the wireless user terminal includes an antenna 2, and the antenna 2 is at a feed point 22, and the antenna is connected to the IC circuit board through the antenna feed line 21 to receive and transmit signals of the wireless user terminal.
  • a coupling antenna 1 that can be coupled to the antenna 2 of the wireless user terminal is installed in a suitable area (hereinafter referred to as a coupling area) of the wireless user terminal. In the short-wave and ultra-short wave bands, the antenna 2 and the coupled antenna 1 are not in an open state.
  • the coupled antenna 1 After the coupled antenna is disposed, there is a parasitic capacitance 3 that cannot be ignored between the coupled antenna and the antenna, and the coupled antenna 1 is coupled to the antenna 2.
  • the coupled antenna 1 After the coupled antenna 1 is coupled to the antenna, the coupled antenna 1 provides a low impedance path for the current to radiate electromagnetic waves through the coupled antenna 1, or to receive signals from base stations, routers, and the like through the combination of the coupled antenna 1 and the antenna 2.
  • the receiving circuit of the wireless user terminal is accessed, thereby improving the efficiency of the wireless user terminal antenna and enhancing the strength of the wireless user terminal signal.
  • the larger the capacitive reactance the larger the coupling amount between the coupled antenna 1 and the antenna 2, and the better the enhancement of the signal strength of the wireless user terminal.
  • the magnitude of the parasitic capacitance depends on factors such as the shape, size, and relative position of the antenna and the coupled antenna.
  • the capacitive reactance between the antenna and the coupled antenna is:
  • f is the frequency of the electromagnetic wave signal
  • C is the capacitance
  • the capacitive reactance between the antenna and the coupled antenna is inversely proportional to the capacitance C of the parasitic capacitance 3.
  • the capacitance C of the parasitic capacitance 3 is related to the shape, size, and relative position of the coupled antenna 1 and the antenna 2. That is, for a wireless user terminal using a specific signal, the antenna and the coupled antenna can be adjusted by adjusting any of the relative positions of the coupled antenna 1 and the antenna 2, the shape of the coupled antenna 1, and the size of the coupled antenna 1. The tolerance value of the wireless user terminal can be adjusted.
  • a wireless user terminal can apply signals of several different frequencies, for example, a general mobile phone can be applied to different signals of 2G, 3G, 4G, wifi, and the same type of signals, such as 3G signals, are different.
  • the frequency of the 3G letter used by the operator is not exactly the same, and the wifi signal has 2400 Hz and 5000 Hz.
  • the "receiving and transmitting signal of a wireless user terminal" refers to a signal for determining a frequency used by a wireless user terminal, and correspondingly determining a "wavelength of receiving and transmitting signals of a wireless user terminal" used in determining a coupling area. , refers to the wavelength of the signal to be enhanced. That is, in the technical solution, the signal of the wireless user terminal to be enhanced has a one-to-one correspondence with the coupled antenna: a mobile phone faces signals of different frequencies, the coupling regions of the antennas are different, and the coupled antennas used are also different.
  • the strength of the wireless user terminal signal according to the present invention refers to the ability of the wireless user terminal to receive or transmit a signal, which can be represented by the efficiency of the antenna.
  • the coupling antenna can be generally fabricated as a metal foil. As shown in FIG. 1, the coupling antenna 1 is elongated, and the base of the coupling antenna refers to one end 11 of the metal foil.
  • the present invention is simply referred to as a coupling region, and has been experimentally verified.
  • the coupling region refers to a sphere region formed by the feed point 22 of the antenna 2 as a center and having a radius of 1/10 of the wavelength of the wireless user terminal signal.
  • receiving and transmitting signal wavelengths of a wireless user terminal refers to a signal to be enhanced as described in the object of the present invention.
  • the coupling region is a range A surrounded by a broken line.
  • the base of the coupled antenna is placed in the coupling region, and the strength of the antenna transceiving signal is enhanced.
  • the wireless user terminal is usually provided with a grounding terminal, which is often referred to as "the ground of the mobile phone" in the mobile phone.
  • the ground terminal is generally a material having good electrical conductivity. It should be noted that the grounding terminal and the coupling day Parasitic capacitance is also generated between the lines under appropriate conditions, and the parasitic capacitance cannot be ignored: if no measures are taken, parasitic capacitance between the ground and the coupled antenna will destroy the matching of the coupled antenna and the antenna. That is to say, once the ground terminal and the coupled antenna generate parasitic capacitance, the coupling effect of the coupled antenna and the antenna will be affected.
  • the present invention requires that the coupled antenna bypass the wireless user.
  • the ground terminal of the terminal that is to say, when the coupling antenna is set, the coupling antenna is spaced apart from the ground in the user and does not touch.
  • the position of the coupling antenna on the back shell bypasses the projection of the ground end on the coupling antenna setting surface, but the present invention does not mandate to bypass the ground end at the coupling antenna. Set the projection on the face.
  • the present invention provides a wireless user terminal protection device.
  • the protection device includes a coupling antenna and a body fixed on the wireless user terminal, and a groove is disposed at a coupling area of the body corresponding to the wireless user terminal, and the concave groove is movably disposed in the groove a slotted brace, the coupled antenna is built in the brace; the coupled antenna has an end end, and the end of the coupled antenna is located when the brace moves in the groove
  • the coupling antenna is coupled to the wireless user terminal antenna in a coupling region of the wireless user terminal antenna, wherein the coupling region is centered on a feeding point of the antenna, and is received by the wireless user terminal.
  • One tenth of the wavelength of the signal is the sphere region formed by the radius.
  • the wireless user terminal of the present invention may be a mobile phone, a tablet computer or a mobile data collector.
  • the material of the coupled antenna of the present invention may be selected from the same material as the user terminal antenna, for example, considering cost and ability to transmit signals, preferably copper, copper alloy, aluminum or aluminum alloy; or stainless steel gold plating or nickel plating; Or in some often bent production sites, you can choose Flexible Printed Circuit Board (FPC board).
  • FPC board Flexible Printed Circuit Board
  • the enhancement of antenna efficiency is related to the shape of the antenna and the coupled antenna.
  • the specific shape of the coupling antenna can vary depending on the shape of the antenna. Preferably, it may be in the form of a long strip with a long strip with a hole.
  • the coupled antenna is also L-shaped.
  • the L-shaped coupled antenna has a long end and a short end. When the long end is located in the coupling area of the wireless user terminal antenna, the signal enhancement effect of the wireless user terminal is more obvious.
  • the length of the coupled antenna is about 1/4 wavelength of the receiving and transmitting signal band of the antenna, the radiation efficiency of the antenna will be significantly improved, and the signal enhancement effect is obvious.
  • the length l of the generally preferred coupling antenna is ⁇ /4 ⁇ 5 mm, where ⁇ is the wavelength of the signal received and transmitted by the wireless user terminal.
  • the signal of the applicable wireless user terminal increases the most.
  • the protection device of the present invention is a protective case or a protective cover of a wireless user terminal.
  • the wireless user terminal according to the present invention may be a short-wave or ultra-short-wave band wireless signal such as 2G, 3G, 4G, and wifi.
  • the protection device is a mobile phone case
  • the mobile phone case includes a coupling antenna 1 and a tensile back case 5a.
  • the back shell 5a is fixed on the back cover of the mobile phone, and a groove 53a is disposed at the coupling area of the back shell corresponding to the mobile phone, and a pull strip 54a is formed in the groove to fit the groove, and the coupling antenna 1 is built in the pull strip .
  • the coupling antenna 1 has an elongated shape and has an end head 11. By pulling and inserting the pull strip 54a in the recess 53a, the coupling antenna ends are located at different positions within the coupling region. Thereby adjusting the strength of the mobile phone signal.
  • the "intensity of the mobile phone signal” as used herein refers to the strength of the enhanced signal.
  • the working position after the pull strip is withdrawn from the groove needs to satisfy the base of the coupled antenna located in the coupling area of the mobile phone.
  • the back cover of the mobile phone is fixed on the rear case of the mobile phone.
  • the end 11 of the coupling antenna (the figure is replaced by a coupling antenna) is located in the coupling region of the antenna, and the coupling antenna 1 bypasses the projection area B of the ground end of the wireless user terminal, and the coupling antenna 1 is coupled with the antenna of the mobile phone, both A parasitic capacitance 3 is generated between the coupling antenna 1 to provide a low-impedance path for the current to radiate the electromagnetic wave through the coupling antenna 1, or to transmit the signal of the base station or the base station through the coupling antenna 2 and the antenna into the wireless user terminal.
  • the receiving circuit thereby improving the efficiency of the wireless user terminal antenna and enhancing the strength of the wireless user terminal signal.
  • the coupling region is a sphere region formed with the antenna feed point 22 as a center and a radius of 1/10 of the wavelength of the mobile phone signal, and the projection of the coupling region is A in the plane of FIG.
  • the signal of the mobile phone is enhanced.
  • the user can adjust the position of the coupling antenna to find the optimal coupling position and then fix the position of the brace. Different frequency signals, different wavelengths, different optimal coupling positions, and the most suitable coupling antenna length pages are different.
  • the invention can be flexibly adjusted and has wider applicability.
  • the length of the coupled antenna is 1/4 wavelength of the signal of the wireless user terminal.
  • the 1/4 wavelength is 31.25 mm
  • the length of the coupled antenna is selected within the range of 26-36 mm, that is, within a range of 1/4 wavelength plus or minus 5 mm.
  • it is 1/4 wavelength, and may be 31 mm or 32 mm, or an integer of 30 mm or 35 mm may be selected for the convenience of processing.
  • the protective case shown in Figure 2 is applied to the iPhone 5 mobile phone for effect verification: the signal of the iPhone 5 itself and the iPhone 5 with the protective case are passively tested under the same conditions for the antenna efficiency when working with various frequency signals.
  • the test environment is an OTA full anechoic chamber (Satimo SG24).
  • the test results are shown in Figure 4, as can be seen from Figure 4,
  • the built-in antenna efficiency of the iPhone 5 itself is about 20%.
  • the protective case 5a and the pull bar is pulled out in the optimal position the built-in antenna efficiency is increased by 47%.
  • the protective case can significantly improve the efficiency of the wifi antenna, even in a poor communication environment, can get a good communication experience.
  • the embodiment of the present invention can set a suitable coupling antenna at the corresponding position of the protection device according to different signals of the mobile phone when setting the coupling antenna. This enables the coupled antenna to be accurately coupled to the antenna on the wireless user terminal, thereby enhancing the signal strength of the internal antenna. Since the coupled antenna is embedded in the protection device, the user does not feel the existence of the coupled antenna during use, thereby improving the user experience.
  • the wireless user terminal protection device provided by the present invention is described in detail above.
  • the principles and embodiments of the present invention are described in the following.
  • the description of the above embodiments is only for helping to understand the method of the present invention and At the same time, there will be changes in the specific embodiments and the scope of application according to the idea of the present invention, and the contents of the present specification should not be construed as limiting the present invention. .

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Abstract

本发明公开无线用户终端保护装置，固定在无线用户终端的后盖上；所述保护装置包括本体和耦合天线，在所述本体的对应无线用户终端的耦合区域处设置有凹槽，在所述凹槽内设置与凹槽配合的拉条，所述拉条中内置有耦合天线；所述耦合天线具有一端头，所述端头位于所述无线用户终端天线的耦合区域内，使得所述耦合天线与所述无线用户终端天线耦合；其中，所述耦合区域为以天线馈点为圆心、以所述无线用户终端信号波长的1/10为半径形成的球体区域。本发明公开的保护装置，通过在对应无线用户终端的耦合天线位置处设置耦合天线，可有效增强无线用户终端的信号；无线用户终端信号的增强不局限于固定地点；造价低；节约能源；耦合天线的安装位置精准。保护装置的具体款式多种，用户可选择多样化。

Description

无线用户终端保护装置 技术领域
本发明涉及无线通信技术领域，特别是涉及一种能够增强无线用户终端信号的保护装置。
背景技术
无线通信技术是利用电磁波信号可以在自由空间中传播的特性进行信息交换的一种通信方式。近些年，在信息通信领域中，发展最快、应用最广的就是无线通信技术。无线通信技术给人们带来的影响无可争议：如今每一天大约有15万人成为新的无线用户，全球范围内的无线用户数量已经超过2亿。
目前，手持终端例如手机、平板电脑、移动数据采集器等是进行无线通信传输的重要设备之一，通过2G、3G、4G等无线网络可以传递各种电磁波信号，因此电磁波信号质量的优劣将极大地影响用户的使用体验。在一般情况下，手持终端中的内置天线能够实现电磁波信号的正常传输，但是，在无线通信环境较为恶劣的情况下，例如手持终端远离基站覆盖区域、电磁波信号被建筑物阻挡或手持终端接收信号能力差等其他原因，故手持终端中的内置天线在一些区域内不能实现电磁波信号的正常传输，影响用户数据量传输。
最近几年，wifi以其无线束缚的优势，已广泛地应用到人们的日常工作、生活中，给人们带来极大的便利，普通的家庭用电脑，甚至办公室电脑，装上无线接收器(天线)，就可以使用wifi网络，给人们的生活、工作环境带来更优的体验。但是wifi也存在上述的缺陷：路由器的信号覆盖面积有限，一些区域，信号弱，影响使用wifi的无线用户终端的信号接收和发射。本发明所称的无线用户终端是指手机、平板电脑、移动数据采集器、笔记本电脑、台式电脑等可以使用无线网络的设备。
针对上述问题，现有的解决方案是增设信号发射装置，以此来增大信号的覆盖面积，或者是更换功率更强的信号发射装置以增强信号，例如增加或更换基站，无线路由器。现有技术从改善信号源，来使覆盖范围内信号更强、覆盖范围更广，以此增强处于信号发射装置覆盖范围内的终端用户信号的强度。通过该方案，虽然可在一定范围内一定程度的增大了信号的强度，但基站设备成本高昂，更换成本大，并且，增强的信号区域固定，不能随使用者移动而移动。
现有手机保护壳或者平板电脑的保护壳，虽然种类繁多，但是只限于保护手机或平板 电脑，功能单一，对手机或平板电脑的信号强度没有任何帮助。
因此，目前需要本领域技术人员迫切解决的一个技术问题就是：提出一种增强无线用户终端信号的策略，不需要局限于固定地点，可以增加无线用户终端信号的强度，且所需成本较低。
发明内容
本发明为了解决上述现有技术存在的缺陷，提供一种无线用户终端保护装置，可以借助于本发明的保护装置，无线用户终端的信号得以有效提高，且不受地点的限制。
为了解决上述问题，本发明公开了一种无线用户终端保护装置，保护装置包括耦合天线和固定在无线用户终端上的本体，在所述本体的对应无线用户终端的耦合区域处设置有凹槽，在所述凹槽内可移动地设置有与凹槽配合的拉条，所述拉条中内置有耦合天线；所述耦合天线具有一端头，当所述拉条在所述凹槽内移动时，所述耦合天线的所述端头位于所述无线用户终端天线的耦合区域内，使得所述耦合天线与所述无线用户终端天线耦合；其中，所述耦合区域为以所述无线用户终端的天线的馈点为圆心、以所述无线用户终端收、发信号波长的1/10为半径形成的球体区域。
本发明保护装置适用的所述无线用户终端，可以为手机、平板电脑或移动数据采集器。
本发明所述耦合天线的材质为一般用户终端的天线材质，例如为铜、铜合金、铝或铝合金；或者为不锈钢镀金或镀镍；或者也可以为柔性线路板。
所述耦合天线的形状因无线用户终端的天线的形状不同而不同，较佳地，可以为长条形、带孔长条形的片状体。
所述耦合天线为也可以L型的片状体，L型耦合天线具有一长端和一短端，当所述长端位于所述无线用户终端天线的耦合区域内，无线用户终端的信号增强效果更明显。
所述耦合天线的长度l为λ/4时，无线用户终端收、发的信号增强效果更明显，其中，λ为无线用户终端收、发信号的波长。为了加工制造方便，一般耦合天线的长度的取值范围在λ/4±5mm之间。
当所述凹槽垂直于本体的下边沿设置时，耦合天线与用户终端天线的耦合量最大，信号强度最高。
本发明所述的保护装置为无线用户终端的保护壳或保护套。
本发明公开的保护装置，通过在对应无线用户终端的耦合天线位置处设置耦合天线，可有效增强无线用户终端的信号；与增加或更换高效基站、路由器的方式相比，使用本发 明增强信号的方式，无线用户终端处于任何地点，信号都有能够被有效提高；对现有保护壳或保护套改动小，造价低；耦合天线不需要电源额外供电，节约能源，更环保；耦合天线的安装位置精准。保护装置的具体款式多种，用户可选择多样化。由于上述多项有益效果的客观存在，本发明提高了用户的体验效果，极容易被推广使用。
附图说明
图1为本发明的无线用户终端天线与耦合天线的电耦合原理示意图；
图2为本发明应用在手机的实施例的结构示意图；
图3为本发明安装在手机的安装条件示意图；
图4为iPhone5手机使用图2保护壳被动测试的结果示意图。
具体实施方式
下面结合附图及实施例对本发明作进一步描述。
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。
本发明实施例的核心构思之一在于，提供一种无线用户终端的保护装置，在如保护套、保护壳上增加耦合天线，使得耦合天线能够精确与无线用户终端的天线耦合，借此来增大无线用户终端天线接收、发射信号的强度。
本发明增强信号的方式基于电耦合原理。图1为本发明的无线用户终端天线与耦合天线的电耦合原理示意图。如图1所示，无线用户终端包括天线2、天线2在馈点22处，通过天线馈线21将天线接入IC电路板，接收和发送无线用户终端的信号。在无线用户终端的合适区域(下称耦合区域)内安装能够与无线用户终端的天线2相耦合的耦合天线1。在短波、超短波频段下，天线2与耦合天线1间不是开路状态，设置耦合天线后，耦合天线与天线间存在不能忽略的寄生电容3，耦合天线1与天线2耦合。耦合天线1与天线耦合后，耦合天线1为电流提供一条低阻抗的路径，从而将电磁波通过耦合天线1辐射出去，或者将基站、路由器等基地台的信号通过耦合天线1与天线2的组合接收进入无线用户终端的接收电路，借此提升无线用户终端天线的效率，增强无线用户终端信号的强度。容抗越大，耦合天线1与天线2之间的耦合量越大，对无线用户终端的信号强度的增强效果越好。
寄生电容量的大小取决于天线与耦合天线的形状、尺寸以及相对位置等因素的影响。 天线与耦合天线间的容抗为：
Figure PCTCN2016080797-appb-000001
其中，j常数，
f为电磁波信号频率，
C为电容量。
如上面公式所示，当无线用户终端确定后，所用信号频率已知为一确定频率，则天线与耦合天线间的容抗与寄生电容3的电容量C呈反比关系。而寄生电容3的电容量C与耦合天线1与天线2的形状、大小以及相对位置有关。即对一使用特定信号的无线用户终端而言，能够通过调整耦合天线1与天线2的相对位置、耦合天线1的形状、耦合天线1的大小中的任一参数，可以调节天线与耦合天线间的容抗值，即可调整无线用户终端的信号的强度。
需要说明的是，因一个无线用户终端可适用几个不同频率的信号，如一般的手机可适用2G、3G、4G、wifi几类不同的信号,而同一类的信号，如3G信号，不同的运营商使用的3G信的频率也不完全相同，wifi的信号也有2400Hz、有5000Hz之分。本发明所述的“无线用户终端的收、发信号”，是指无线用户终端所使用的一个确定频率的信号，与之对应的确定耦合区域所用到的“无线用户终端收、发信号波长”，是指该待增强的信号的波长。即在技术方案中，待增强的无线用户终端的信号与耦合天线是一一对应：一个手机面对不同频率的信号，天线的耦合区域不同，所使用的耦合天线也有所不同。
本发明所述的无线用户终端信号的强度，是指无线用户终端接收或发送信号的能力，可由天线的效率的表示。
为了使得耦合天线与无线用户终端的天线成功耦合，耦合天线的基部须设置在合适的天线耦合区域内。耦合天线一般可制作成金属箔，如图1所示，耦合天线1为长条形，耦合天线的基部是指金属箔的一个端头11。本发明将该合适区域简称为耦合区域，经过试验验证，耦合区域是指以天线2的馈点22为圆心、以无线用户终端信号波长的1/10为半径形成的球体区域。本发明所称的“无线用户终端收、发信号波长”，是指本发明在发明目的中所述的待增强的信号。在图1的视角中，耦合区域为虚线围成的范围A。将上述耦合天线的基部置于耦合区域内，天线收发信号的强度有所增强。
为了防止维修过程中的意外损坏，无线用户终端通常会设置有接地端，在手机中，常称为“手机的地”。该接地端一般为导电性良好的材质。需要注意的是，接地端与耦合天 线之间在适当的条件下也会产生寄生电容，并且该寄生电容不容忽视:若不采取措施，接地端与耦合天线之间也会产生寄生电容将破坏耦合天线与天线的匹配。也就是说，一旦接地端与耦合天线产生寄生电容，耦合天线与天线的耦合效果将被影响。并且因为导电材质的设置面积一般比较大，会影响耦合天线和天线的辐射，即使有耦合天线的存在，也能够使得天线的辐射效率变差，因此，本发明要求，耦合天线要绕开无线用户终端的接地端。也就是说，在设置耦合天线时，耦合天线与用户中的接地端间隔设置，不接触。一般地，为了更彻底地远离无线用户终端的接地端，耦合天线在背壳上的设置位置绕开接地端在耦合天线设置面上的投影，但本发明不强制要求绕开接地端在耦合天线设置面上的投影。
基于上述原理，本发明提出一种无线用户终端保护装置。所述保护装置包括耦合天线和固定在无线用户终端上的本体，在所述本体的对应所述无线用户终端的耦合区域处设置有凹槽，在所述凹槽内可移动地设置有与凹槽配合的拉条，所述拉条中内置有所述耦合天线；所述耦合天线具有一端头，当所述拉条在所述凹槽内移动时，所述耦合天线的所述端头位于所述无线用户终端天线的耦合区域内，使得所述耦合天线与所述无线用户终端天线耦合；其中，所述耦合区域为以所述天线的馈点为圆心、以所述无线用户终端收、发信号波长的1/10为半径形成的球体区域。
本发明所述的无线用户终端，可以为手机、平板电脑或移动数据采集器。
本发明所涉及耦合天线的材质，可选取与用户终端天线相同的材质，例如考虑成本以及传递信号的能力，优选可为铜、铜合金、铝或铝合金；或者为不锈钢镀金或镀镍；再或者在一些经常弯折的产所可以选择柔性线路板(Flexible Printed Circuit Board，简称FPC板)。
天线效率的增强效果与天线和耦合天线的形状有关。耦合天线具体的形状可依天线形状而改变。较佳地，可以为长条形、带孔长条形。
所述耦合天线为也可以L型，L型耦合天线具有一长端和一短端，当所述长端位于所述无线用户终端天线的耦合区域内，无线用户终端的信号增强效果更明显。
实验证明：当耦合天线的长度在天线的收、发信号波段的1/4波长左右时，天线的辐射效率将得到明显的提升，信号增强的效果明显。为了加工制造方便，一般优选的耦合天线的长度l为λ/4±5mm，其中，λ为无线用户终端所收、发信号的波长。
当所述凹槽垂直于保护装置本体的下边沿时，适用的无线用户终端的信号增幅最大。
本发明所述的护装置为无线用户终端的保护壳或保护套。
本发明所述的无线用户终端可以是2G、3G、4G、wifi等短波、超短波频段无线信号。
下面通过具体实施例来对本发明做具体说明。应当理解的是，下述说明仅是对本发明优选实施方式的描述，而非对本发明的限制，本领域普通技术人员由本发明的发明构思以及具体实施方式所作的等效变形，均在本发明的保护范围，特此说明。
下面以手机壳为例来说明本发明的具体结构。
如图2结合图3所示，保护装置为手机壳，手机壳包括耦合天线1和拉伸式背壳5a。背壳5a固定在手机的后盖上，在背壳对应手机耦合区域处设置有凹槽53a，在凹槽内可移动地设置与凹槽配合的拉条54a，拉条中内置有耦合天线1。耦合天线1为长条形，具有一端头11。通过在凹槽53a中抽、插移动拉条54a时，耦合天线端头位于耦合区域内的不同位置。借此调整手机信号的强度。此处所述的“手机信号的强度”，是指增强后的信号的强度。
也就是说，拉条从凹槽中抽出后的工作位置，需要满足耦合天线的基部位于手机的耦合区域内。具体如图3所示，手机背壳固定在手机的后壳上。耦合天线(此图以耦合天线代替拉条)的端头11位于天线的耦合区域内，并且耦合天线1绕开无线用户终端的接地端的投影区域B，耦合天线1与手机的天线耦合，二者之间产生寄生电容3,耦合天线1为电流提供一条低阻抗的路径从而将电磁波通过耦合天线1辐射出去，或者将基站或路由器等基地台的信号通过耦合天线2与天线的组合进入无线用户终端的接收电路，借此提升无线用户终端天线的效率，增强无线用户终端信号的强度。承前所述，耦合区域为以天线馈点22为圆心、以手机信号收、发波长的1/10为半径形成的球体区域，在图2的平面，该耦合区域的投影为A。
耦合天线1在移动过程中，只要端头位于耦合区域内，对手机信号即有增强效果。使用者可以通过调整耦合天线的位置，来寻找最佳耦合位置，然后固定拉条的位置。不同频率的信号，波长不同，最佳耦合的位置不同，最适合的耦合天线长度页不相同，本发明可灵活调整，适用性更广。
在本实施例中，耦合天线的长度为无线用户终端信号的1/4波长。以频率为2.4GHz的wifi电磁波信号为例，1/4波长为31.25mm，则耦合天线的长度在26-36mm范围内选取，即在1/4波长加减5mm范围之内选择。优选为1/4波长，可取31mm或32mm，或者为了便于加工，可选取整数30mm、35mm。
将图2所示的保护壳，应用到iPhone5手机上做效果验证：对iPhone5本身的信号及装有保护壳的iPhone5，在同等条件下进行其在各种频率信号工作时的天线效率被动测试。测试环境为OTA全电波暗室(Satimo SG24)。测试结果如图4所示，从图4中可以看出， 在使用2400MHZ波段的wifi信号通讯时，iPhone5本身的内置天线效率约为20％，当iPhone5套上保护壳5a，并将拉条拉出在最佳位置时，内置天线效率增加为47％，可见，在wifi信号频段，保护壳能够显著地提升wifi天线效率，即使在通信情况较差的环境下，也能获得不错的通信体验。
本发明实施例的无线用户终端保护装置，由于保护装置与手机是适配的，因此本发明实施例在设置耦合天线时，能够根据不同信号的手机设置合适的耦合天线的在保护装置的对应位置，使得耦合天线能够精确地与无线用户终端上的天线耦合，借此增强了内置天线的信号强度。由于是耦合天线是内嵌于保护装置之中，用户在使用过程中不会感受到耦合天线的存在，提高了用户的体验效果。
以上对本发明所提供的无线用户终端保护装置进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (9)

  1. 一种无线用户终端保护装置，其特征在于，所述保护装置包括耦合天线和固定在无线用户终端上的本体，在所述本体的对应所述无线用户终端的耦合区域处设置有凹槽，在所述凹槽内可移动地设置有与凹槽配合的拉条，所述拉条中内置有所述耦合天线；所述耦合天线具有一端头，当所述拉条在所述凹槽内移动时，所述耦合天线的所述端头位于所述无线用户终端天线的耦合区域内，使得所述耦合天线与所述无线用户终端天线耦合；其中，所述耦合区域为以所述无线用户终端的天线的馈点为圆心、以所述无线用户终端收、发信号波长的1/10为半径形成的球体区域。
  2. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述保护装置适用的所述无线用户终端为手机、平板电脑或移动数据采集器。
  3. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述耦合天线的材质为铜、铜合金、铝或铝合金；
    或者为不锈钢镀金或镀镍；
    或者为柔性线路板。
  4. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述耦合天线为长条形、带孔长条形的片状体。
  5. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述耦合天线为L型的片状体，具有一长端和一短端，所述长端位于所述无线用户终端天线的耦合区域内。
  6. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述耦合天线的长度l为λ/4±5mm，其中，λ为无线用户终端收、发信号的波长。
  7. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述耦合天线的长度l为λ/4，其中，λ为无线用户终端收、发信号的波长。
  8. 如权利要求1所述的无线用户终端保护装置，其特征在于，所述凹槽垂直于本体的下边沿。
  9. 如权利要求1-8任一所述的无线用户终端保护装置，其特征在于，所述保护装置为所述无线用户终端的保护壳或保护套。
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Citations (4)

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Publication number Priority date Publication date Assignee Title
US5835065A (en) * 1996-09-19 1998-11-10 Qualcomm Incorporated Variable length whip with helix antenna system
CN1504002A (zh) * 2001-02-26 2004-06-09 夏普株式会社 便携式收发器的天线
CN105958181A (zh) * 2016-04-29 2016-09-21 深圳市联合东创科技有限公司 耦合天线及无线用户终端
CN105977607A (zh) * 2016-04-29 2016-09-28 深圳市联合东创科技有限公司 增强无线用户终端信号的装置和方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5835065A (en) * 1996-09-19 1998-11-10 Qualcomm Incorporated Variable length whip with helix antenna system
CN1504002A (zh) * 2001-02-26 2004-06-09 夏普株式会社 便携式收发器的天线
CN105958181A (zh) * 2016-04-29 2016-09-21 深圳市联合东创科技有限公司 耦合天线及无线用户终端
CN105977607A (zh) * 2016-04-29 2016-09-28 深圳市联合东创科技有限公司 增强无线用户终端信号的装置和方法

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