WO2017185362A1

WO2017185362A1 - Protective jacket for wireless user terminal

Info

Publication number: WO2017185362A1
Application number: PCT/CN2016/080791
Authority: WO
Inventors: 袁道喜; 施安龙; 吴府叡
Original assignee: 深圳市联合东创科技有限公司
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2017-11-02

Abstract

The present invention discloses a protective jacket for a wireless user terminal, which comprises a back cover, a wallet and a coupling antenna. The back cover is attached to the wireless user terminal. The wallet is connected to the back cover. The junction of the wallet and the back cover is a bendable area. The wallet, after being closed, covers the screen of the wireless user terminal. The coupling antenna is fixed to the back cover and/or the wallet, across a bendeded area where the wallet and the jacket are connected. The coupling antenna has an end located within a coupling area of an antenna of the wireless user terminal such that the coupling antenna is coupled to the antenna of the wireless user terminal. The coupling area is a sphere area formed by taking the feed point of the antenna as a center of circle and 1/10 of the wavelength of the signal received/transmitted by/from the wireless user terminal as a radius. By providing the coupling antenna at the position of the coupling antenna corresponding to the wireless user terminal, the protective jacket disclosed in the invention can effectively enhance the signal of the wireless user terminal, and the signal enhancement of the wireless user terminal is not limited to a fixed location, with low cost, energy saving, and the installation position of the coupling antenna is accurate. Meanwhile, the protective jacket has a variety of styles, providing diversified choices to users.

Description

Wireless user terminal cover

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a protection sleeve capable of enhancing a signal of a wireless user terminal.

Background technique

Wireless communication technology is a communication method that exchanges information using electromagnetic wave signals that can propagate in free space. 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.

At present, 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. Greatly affect the user experience. Under normal circumstances, the built-in antenna in the handheld terminal can realize the normal transmission of electromagnetic wave signals. However, in the case of a relatively harsh wireless communication environment, for example, 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. Other reasons, such as poor capacity, 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.

In recent years, WIFI has been widely used in people's daily work and life with its advantages of wireless restraint, bringing great convenience to people, ordinary home computers, and even office computers, equipped with wireless receivers ( Antenna), you can use WIFI network to bring people a better experience in life and work environment. However, WIFI also has the above-mentioned drawbacks: the signal coverage area of the router is limited, and in some areas, the signal is weak, which affects the signal reception and transmission of the wireless user terminal using WIFI. The term "wireless user terminal" as used in the present invention 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.

In view of the above problems, 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. With this scheme, although 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 existing mobile phone case or tablet case, 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.

Therefore, 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.

Summary of the invention

In order to solve the above-mentioned drawbacks of the prior art, the present invention provides a wireless user terminal protection sleeve, which can effectively improve the signal of the wireless user terminal by the protective cover of the present invention, and is not limited by the location.

In order to solve the above problems, the present disclosure discloses a wireless user terminal protection cover including a back cover, a wallet and a coupling antenna; the back cover is attached to the wireless user terminal; and the wallet is connected to the back cover a joint of the wallet and the back cover is a bendable region, the cover is closed to block a screen of the wireless user terminal; the coupling antenna is fixed on the back cover and/or the wallet a bending region connected to the holster across the wallet; the coupling antenna having a one end, the end being located in a coupling region of the wireless user terminal antenna, such that the coupling antenna and the An antenna coupling of the wireless user terminal; wherein the coupling region is a sphere region formed by a radius of a receiving signal of the wireless user terminal and a radius of 1/10 of a wavelength of the signal transmitted by the wireless user terminal.

The protective cover of the present invention is applicable to the wireless user terminal, and may be a mobile phone, a tablet computer or a mobile data collector.

In order to meet the frequent opening and closing of the back cover and the wallet, the coupled antenna uses a flexible circuit board.

The shape of the coupling antenna differs depending on the shape of the antenna of the wireless user terminal. Preferably, the coupling antenna is a strip-shaped body having a long strip shape and 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. When 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 obvious.

The coupled antenna may also be a horn-shaped sheet-like body having a large end and a small end, and the large end is located in the coupling region, and the signal enhancement effect of the wireless user terminal is obvious.

When the length l of the coupled antenna is λ/4, the signal enhancement effect of the wireless user terminal is more obvious, wherein λ is the wavelength of the wireless user terminal receiving and transmitting signals. For the convenience of processing and manufacturing, the length of the general coupling antenna ranges from λ/4±5mm.

There are several ways in which the coupling antenna can be attached to the back cover or the wallet:

An interlayer is provided at a position on the wallet and/or the holster corresponding to the coupling region, the coupling antenna being pressed into the interlayer.

Alternatively, the coupling antenna is bonded to the inner surface of the wallet and/or the holster.

The protective cover 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; and using the enhanced signal of the present invention compared with the method of adding or replacing the high efficiency base station and the router In the way, the wireless user terminal is in any place, the signal can be effectively improved; the existing protective cover is small and the cost is low; the coupled antenna does not need additional power supply, saves energy, and is more environmentally friendly; the coupling antenna is installed accurately. The specific styles of the protective cover are various, and the user can choose to diversify; due to the objective existence of the above multiple beneficial effects, the present invention improves the user's experience and is easily promoted and used.

DRAWINGS

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;

2 is a schematic diagram of an embodiment of the present invention applied to a mobile phone;

FIG. 3 is a schematic diagram showing the result of applying the protective cover of the present invention to a mobile phone and enhancing the passive test of the mobile phone signal.

detailed description

The invention is further described below in conjunction with the drawings and embodiments.

The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

One of the core concepts of the embodiments of the present invention is to provide a protective cover for a wireless user terminal, and a coupling antenna is added to the protective cover, so that the coupled antenna can be accurately coupled with the antenna of the wireless user terminal, thereby increasing the wireless user terminal. The strength of the antenna receiving and transmitting signals.

The manner in which the present invention enhances the signal is based on the principle of electrical coupling. 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. As shown in FIG. 1, 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. 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. 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 between the coupled antenna 1 and the antenna 2, and the more the enhancement of the signal strength of the wireless user terminal is. it is good.

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 antenna 2 and coupled antenna 1 is:

Where j constant,

f is the frequency of the electromagnetic wave signal,

C is the capacitance.

As shown in the above formula, when the wireless user terminal determines that the used signal frequency is known to be a certain frequency, 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.

It should be noted that because 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" according to the present invention 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.

In order to successfully couple the coupled antenna to the antenna of the wireless subscriber terminal, the base of the coupled antenna must be placed in the appropriate antenna coupling region. 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 a radius of 1/10 of the wavelength of the signal transmitted by the wireless user terminal. The term "receiving and transmitting signal wavelengths of a wireless user terminal" as used in the present invention refers to a signal to be enhanced as described in the object of the present invention. In the angle of view of Fig. 1, 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.

In order to prevent accidental damage during maintenance, 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 parasitic capacitance is also generated between the ground terminal and the coupled antenna under appropriate conditions, and the parasitic capacitance cannot be ignored: if no measures are taken, parasitic capacitance between the ground terminal and the coupled antenna will also destroy the coupling. Match the antenna to 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. Moreover, since the setting area of the conductive material is generally large, the radiation of the coupled antenna and the antenna may be affected, and even if there is a coupled antenna, the radiation efficiency of the antenna may be deteriorated. Therefore, 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. Generally, in order to be more completely away from the ground end of the wireless user terminal, 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 invention does not force the end of the coupling antenna to be circumvented. The projection of the ground terminal on the coupling antenna setting surface.

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 places that are often bent, you can choose Flexible Printed Circuit Board (FPC 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.

The experiment proves that when the length of the coupled antenna is about 1/4 wavelength of the working signal band of the antenna, the radiation efficiency of the antenna will be significantly improved, and the strength of the signal will be enhanced. The preferred coupling antenna has a length l of λ/4 ± 5 mm, where λ is the wavelength of the wireless subscriber terminal signal.

Based on the above principles, the present invention provides a wireless user terminal protection sleeve. The wireless user terminal to which the protective cover is applied is a mobile phone, a tablet or a mobile data collector. FIG. 2 shows a structure of a protective cover of the present invention by taking a mobile phone as an example. As shown in FIG. 2, the protective cover of the present invention comprises a back cover 51, a wallet 52 and a coupling antenna 1; the back cover 51 is attached to the mobile phone; the wallet 52 is connected to the back cover 51, and the connection between the wallet and the back cover is In the bending area, the wallet can be opened and closed, and the screen of the mobile phone a is blocked when the wallet is closed; the back cover 51 and the wallet protect the mobile phone. The coupling antenna 1 is fixed to the back cover and/or the wallet across the bend where the wallet is attached to the holster. That is to say, the coupling antenna can be fixed on the back cover, or can be fixed on the wallet, or can be fixed on the back cover and the wallet at the same time.

The coupling antenna 1 has an end end 11 which is located in the coupling area A of the antenna of the mobile phone. The coupling antenna 1 surrounds the projection area B of the ground end of the mobile phone, so that the coupling antenna is coupled with the antenna of the mobile phone; wherein the coupling area It refers to a sphere area formed by taking the feed point of the mobile phone antenna as the center and using the mobile phone to receive and send a signal with a radius of 1/10. The area shown in Figure 2 is the area A.

In order to meet the frequent opening and closing of the back cover and the wallet, the coupling antenna of the present invention uses 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 a long strip-shaped strip-shaped body having a long strip shape.

The coupled antenna shown in FIG. 2 is an L-shaped sheet-shaped body. The L-shaped coupled antenna has a long end and a short end. When the long end is located in the coupling region, the signal enhancement effect of the mobile phone is more obvious.

In the present invention, the coupled antenna may also be a horn-shaped sheet-like body having a large end and a small end. When the large end is located in the coupling area of the antenna of the wireless user terminal, the signal enhancement effect of the wireless user terminal is obvious.

When the length l of the coupled antenna is λ/4, the signal enhancement effect of the wireless user terminal is more obvious, wherein λ is the wavelength of the wireless user terminal signal. For the convenience of processing and manufacturing, the length of the general coupling antenna ranges from λ/4±5mm. Taking the wifi electromagnetic wave signal with a frequency of 2.4 GHz as an example, the 1/4 wavelength is 31.25 mm, and 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. Preferably, it is 1/4 wavelength, and may be 31 mm or 32 mm, or for good processing, an integer of 30 mm may be selected.

An interlayer is provided at a position on the wallet and/or the holster corresponding to the coupling region, the entirety and/or one end of the coupling antenna being pressed into the interlayer.

The signal used by 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, or WIFI.

The invention will be specifically described below by way of specific embodiments. It is to be understood that the following description of the preferred embodiments of the present invention The scope of protection is hereby stated.

FIG. 3 is a schematic diagram showing the result of applying the protective cover of the present invention to a mobile phone and enhancing the passive test of the mobile phone signal. The protective cover shown in Figure 2 is applied to the iPhone 5 mobile phone for effect verification: the iPhone 5 itself and the iPhone 5 with the protective cover are passively tested under the same conditions for the antenna efficiency when working with various frequency signals, and the test environment is OTA. Full anechoic chamber (Satimo SG24). The test results are shown in Figure 3. As can be seen from the figure, when using the 2400MHZ band wifi signal communication, the built-in antenna efficiency of the iPhone 5 itself is about 20%, and when using the iPhone5 with the protective case shown in Figure 2 Communication, and when the holster is unfolded, the efficiency of the built-in antenna of the iPhone 5 is increased to 55%. It can be seen that in the wifi signal band, the enhanced holster can significantly improve the efficiency of the wifi antenna, even in a poor communication environment. A good communication experience.

In the wireless user terminal protection sleeve of the embodiment of the present invention, since the protective cover is adapted to the mobile phone, the embodiment of the present invention can set the corresponding position of the suitable coupling antenna in the protective case according to different types of mobile phones. 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 protective cover, the user does not feel the existence of the coupled antenna during use, thereby improving the user experience.

The wireless user terminal protection sleeve 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. .

Claims

A wireless user terminal protective cover, comprising: a back cover, a wallet and a coupling antenna; the back cover is attached to the wireless user terminal; the wallet is connected to the back cover, the wallet The connection with the back cover is a bendable region, the cover is closed to block the screen of the wireless user terminal; the coupling antenna is fixed on the back cover and/or the wallet, across the a bending region of the wallet connected to the holster; the coupling antenna has a one end, the end is located in a coupling region of the wireless user terminal antenna, such that the coupling antenna and the antenna of the wireless user terminal Coupling; wherein the coupling region is a sphere region formed by using a feeding point of an antenna of the wireless user terminal as a center and a radius of 1/10 of a wavelength of a signal transmitted by the wireless user terminal.
The wireless user terminal protection box according to claim 1, wherein the wireless user terminal to which the protective cover is applied is a mobile phone, a tablet computer or a mobile data collector.
The wireless subscriber terminal cover of claim 1 wherein said coupling antenna is a flexible circuit board.
The wireless subscriber terminal protective cover according to claim 1, wherein said coupling antenna is an elongated strip-shaped strip-shaped body having a long strip shape.
The wireless subscriber terminal protection cover according to claim 1, wherein said coupling antenna is an L-shaped chip body having a long end and a short end, said long end being located at said wireless user terminal antenna Within the coupling area.
The wireless subscriber terminal protection cover of claim 1 wherein said coupling antenna is a flared sheet-like body having a large end and a small end, said large end being located in said coupling region.
The wireless subscriber terminal protection sleeve according to claim 1, wherein the length l of the coupled antenna is λ/4±5 mm, wherein λ is a wavelength at which the wireless user terminal receives and transmits signals.
The wireless subscriber terminal protection set according to claim 1, wherein the length l of the coupled antenna is λ/4, wherein λ is a wavelength at which the wireless user terminal receives and transmits signals.
The wireless user terminal protective case according to claim 1, wherein an interlayer is disposed at a position of the wallet and/or the corresponding coupling region on the holster, and the coupling antenna is press-fitted in the interlayer .
The wireless subscriber terminal case of claim 1 wherein said coupling antenna is bonded to an inner surface of said wallet and/or said holster.