WO2017202308A1 - Communication system - Google Patents

Abstract

The present invention relates to the technical field of communications. Provided in embodiments of the present invention is a communication system, which is applicable to wearable devices and which comprises: a main antenna, an auxiliary antenna and a communication module; the main antenna is disposed inside a wearable device and is electrically connected to the communication module; the auxiliary antenna is provided at the outside of a housing of the wearable device in an electromagnetic adhesion manner, and the auxiliary antenna is used in conjunction with the main antenna in an electromagnetic coupling manner so as to increase an effective length L of the main antenna; the communication module is disposed inside the wearable device and is electrically connected to a circuit board inside the wearable device, for establishing a communication connection with other devices surrounding the wearable device according to electromagnetic wave signals transmitted or received by the main antenna, and for communicating with the other devices to which a communication connection is established. The communication system according to the embodiments of the present invention is used to increase the effective length L of the main antenna by using the auxiliary antenna in conjunction with the main antenna, increasing a communication frequency-band range covered by the antennae, thereby improving the antenna performances.

Description

Communication system

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a communication system.

Background technique

For electronic devices that use electromagnetic wave communication, the antenna is an indispensable and important component. On the one hand, the antenna can transmit signals by radiating electromagnetic waves, and on the other hand, it can also receive signals transmitted by other devices.

At present, most antennas are disposed inside electronic devices. Therefore, antennas are usually limited by the size of electronic device casings. The continuous development and advancement of electronic device integration processes have made electronic devices more compact and compact, and correspondingly, they are installed in electronics. The length of the antenna inside the device is also gradually shortened. However, antenna performance, especially the low-frequency performance of the antenna (such as the range of the covered communication band, etc.) is often related to the length of the antenna. The longer the length of the antenna, the better the low-frequency performance of the antenna. Therefore, when the electronic device becomes more compact and compact, the range of the communication band covered by the antenna disposed therein is gradually narrowed, and it is easy to occur that it is difficult to cover the communication band required in the communication process, and the antenna performance is poor.

Summary of the invention

It is an object of embodiments of the present invention to provide a communication system to increase the range of communication frequency bands covered by an antenna and improve antenna performance.

To achieve the above objective, an embodiment of the present invention discloses a communication system, which is applied to a wearable device, and the system includes: a main antenna, an auxiliary antenna, and a communication module;

The main antenna is disposed inside the wearable device and is electrically connected to the communication module. The main antenna emits electromagnetic wave signals to other devices around the wearable device by radiating electromagnetic waves and transmits the other devices. Electromagnetic wave signal;

The auxiliary antenna is configured to be externally disposed on the housing of the wearable device by electromagnetic adsorption, and the auxiliary antenna is used in combination with the main antenna by electromagnetic coupling to increase the effective length L of the main antenna;

The communication module is disposed inside the wearable device and is electrically connected to a circuit board inside the wearable device for establishing communication with other devices around the wearable device according to an electromagnetic wave signal transmitted or received by the main antenna. Connect and communicate with other devices that establish a communication connection.

Preferably, the length of the auxiliary antenna is: a length determined according to an internal hardware structure of the wearable device and an original length L _{0 of} the main antenna.

Preferably, the effective length L is: according to the original length L ₀ of the main antenna, the dielectric constant ε ₁ of the dielectric around the main antenna, the dielectric constant ε ₂ of the dielectric around the auxiliary antenna, and the speed of light c The calculated length, wherein the effective length is proportional to c/f, where f is the preset operating frequency point for the current environment.

Preferably, the distance between the main antenna and the auxiliary antenna is d ₁ ≤ 2.5 mm.

Preferably, the auxiliary antenna is further configured to be coupled to the grounded parasitic antenna and the antenna end of the main antenna respectively by electromagnetic coupling based on an impedance system of the main antenna to increase an effective length of the main antenna.

Preferably, the coupling distance d ₂ of the starting end of the auxiliary antenna and the analog ground area of the circuit board is ≤ 0.1 mm.

Preferably, the coupling distance d ₃ of the end of the auxiliary antenna and the end of the main antenna is ≤ 0.1 mm.

Preferably, the auxiliary antenna is a detachable antenna.

Preferably, the system further comprises:

a data storage module, configured to store a frequency point in a communication frequency band covered by the main antenna when working alone, and a first signal strength of the frequency point;

The signal detecting module is configured to prompt to remove the auxiliary antenna when detecting that the second signal strength of the frequency point is lower than the first signal strength when the primary antenna is used in cooperation with the auxiliary antenna.

Preferably, the wearable device comprises the following two radiators:

a radiator formed by the simulated ground region of the circuit board;

A radiator composed of the main antenna and the auxiliary antenna.

An embodiment of the present invention provides a communication system, including: a main antenna, an auxiliary antenna, and a communication module; a main antenna disposed inside the wearable device and electrically connected to the communication module; and an auxiliary antenna configured to be worn by electromagnetic adsorption The external casing of the device, and the auxiliary antenna is used in combination with the main antenna by electromagnetic coupling to increase the effective length L of the main antenna; the communication module is disposed inside the wearable device and electrically connected to the circuit board inside the wearable device for The electromagnetic wave signal transmitted or received by the main antenna establishes a communication connection with other devices around the wearable device, and communicates with other devices that establish a communication connection. The communication system provided by the embodiment of the present invention increases the effective length L of the main antenna by using the auxiliary antenna in combination with the main antenna, thereby increasing the range of the communication frequency band covered by the antenna and improving the antenna performance.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of another communication system according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of resonance simulation of a main antenna in a case where an auxiliary antenna is used and an auxiliary antenna is not used according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of frequency point performance simulation of a primary antenna using two types of auxiliary antennas and no auxiliary antennas according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The system is applied to a wearable device 10, and the system may include: a primary antenna 101, an auxiliary antenna 102, and a communication module 103.

First, the wearable device 10 will be described below. The wearable device 10 mentioned herein may be in the form of a device worn on the wrist, the arm, and the head. For example, the wearable device 10 may be a wrist worn device having a projection function. It should be noted that the specific wearable devices listed above are merely illustrative, and the present invention does not need to limit the specific form of the wearable device 10.

The main antenna 101 is disposed inside the wearable device 10 and electrically connected to the communication module 103. The main antenna 101 emits electromagnetic wave signals to other devices around the wearable device 10 by radiating electromagnetic waves and receives electromagnetic wave signals emitted by other devices. .

It should be noted that the main antenna 101 mentioned here is usually an antenna that is self-contained inside the wearable device. Generally, the main antenna is often unchangeable after the wearable device 10 is produced.

The auxiliary antenna 102 is disposed outside the casing of the wearable device 10 by electromagnetic adsorption, and the auxiliary antenna 102 is used in combination with the main antenna 101 by electromagnetic coupling to increase the effective length L of the main antenna 101.

Specifically, the effective length L is a length calculated from the original length L ₀ of the main antenna 101, the dielectric constant ε ₁ of the dielectric around the main antenna 101, the dielectric constant ε ₂ of the dielectric around the auxiliary antenna 102, and the optical velocity c.

It should be noted that the effective length L is calculated based on the integrated parameters obtained by mathematically calculating the dielectric constant ε ₁ , the dielectric constant ε _{2 ,} and the speed of light c. Of course, the embodiment of the present invention does not need to obtain the comprehensive The specific form of the mathematical operation of the parameter is limited, and those skilled in the art need to make reasonable settings according to the specific conditions in the actual application.

The effective length is proportional to c/f, and f is the preset working frequency point for the current environment.

It should be noted that the auxiliary antenna 102 is a detachable antenna. In an actual application, whether the auxiliary antenna 102 is used may be determined according to a frequency point signal in the current environment of the wearable device 10. For example, the main antenna 101 of the wearable device 10 can be used. Covering the working frequency point f=1.575 GH _Z corresponding to the GPS signal, then when the wearable device 10 is within the radiation range of the GPS satellite, it is entirely possible to receive the radiated electromagnetic wave signal only through the main antenna 101; for example, when the wearable device 10 radiation within the scope of the WiFi base station, since the WiFi signal corresponding to the working frequency f = 2.4GH _Z, thus relying on only the main antenna 101 is unable to receive the WiFi signal, this time, the auxiliary antenna 102 may select the main antenna 101 In combination with the way, the effective length L of the main antenna 101 is increased, so that the bandwidth of the supported working frequency point can be widened.

In a specific embodiment of the invention, the length of the auxiliary antenna 102 is determined according to the internal hardware structure of the wearable device 10 and the original length L _{0 of the} main antenna 101.

The internal hardware structure of the wearable device 10 referred to herein means that the hardware such as a circuit board, a sensor, a projection device, a speaker, and the like provided in the casing of the wearable device are arranged inside the wearable device 10. It should be noted that the circuit board, the sensor, the projection device, and the speaker are merely taken as an example for description. The embodiment of the present invention does not need to limit the internal hardware and internal hardware structure of the wearable device 10.

In another embodiment of the present invention, the auxiliary antenna 102 is further configured to be coupled to the grounded parasitic antenna and the antenna end of the main antenna 101 by electromagnetic coupling based on the impedance system of the main antenna 101 to increase the main antenna 101. The effective length.

Preferably, the distance between the main antenna and the auxiliary antenna 101 102 d ₁ ≤2.5mm.

It should be noted that the distance d ₁ ≤ 2.5 mm between the main antenna 101 and the auxiliary antenna 102 mentioned herein is only a preferred implementation manner provided by the embodiment of the present invention, since the main antenna 101 and the auxiliary antenna 102 are electromagnetically The coupling method is combined, and it is not difficult to understand according to the principle of electromagnetic coupling. The smaller the coupling distance is, the better the coupling effect is. Therefore, in practical applications, the distance between the main antenna 101 and the auxiliary antenna 102 is as small as possible, that is, The closer the main antenna 101 and the auxiliary antenna 102 are, the better the matching effect is.

Preferably, the coupling distance d _{2 of the} auxiliary antenna 102 and the analog ground area of the circuit board is ≤ 0.1 mm.

It should be noted that the coupling distance d ₂ between the starting end of the auxiliary antenna 102 and the analog ground area of the circuit board is only a preferred implementation manner provided by the embodiment of the present invention. Similarly, according to the principle of electromagnetic coupling. It is not difficult to understand that in practical applications, the smaller the coupling distance d ₂ between the starting end of the auxiliary antenna 102 and the analog ground region of the circuit board, the better.

Preferably, the coupling distance d ₃ of the end of the auxiliary antenna 102 and the end of the main antenna 101 is ≤ 0.1 mm.

It should be noted that the coupling distance d ₃ ≤ 0.1 mm between the end of the auxiliary antenna 102 and the end of the main antenna 101 is also only a preferred implementation manner provided by the embodiment of the present invention. Similarly, according to electromagnetic coupling. The principle is not difficult to understand. In practical applications, the smaller the coupling distance d ₃ between the end of the auxiliary antenna 102 and the end of the main antenna 101 is, the better the effect is.

Preferably, the wearable device 10 can include the following two radiators:

(1) a radiator formed by the simulated ground region of the circuit board;

(2) A radiator composed of the main antenna 101 and the auxiliary antenna 102.

The communication module 103 is disposed inside the wearable device 10 and is electrically connected to a circuit board inside the wearable device 10 for establishing a communication connection with other devices around the wearable device 10 according to an electromagnetic wave signal transmitted or received by the main antenna 101. And communicate with other devices that establish communication connections.

The communication system provided by the embodiment of the present invention increases the effective length L of the main antenna by using the auxiliary antenna in combination with the main antenna, thereby increasing the range of the communication low frequency band covered by the antenna and improving the antenna performance.

FIG. 2 is a schematic structural diagram of another communication system according to an embodiment of the present invention. The system may further include:

The data storage module 104 is configured to store a frequency point in a communication frequency band covered by the main antenna 101 when the main antenna 101 is working alone, and a first signal strength of the frequency point.

The signal detecting module 105 is configured to prompt to remove the auxiliary device when detecting that the second signal strength of the frequency point is lower than the first signal strength when the primary antenna 101 is used in cooperation with the auxiliary antenna 102. Antenna 102.

Applying the communication system provided by the embodiment of the present invention, on the basis of all the beneficial effects of the embodiment shown in FIG. 1, the current environment of the wearable device 10 can also be used by the signal detecting module 105 (1) using only the main antenna 101 and (2) The signal strength for the same frequency point when the main antenna 101 and the auxiliary antenna 102 are used together, and a more preferable use scheme is selected from (1) or (2), and the user is prompted whether or not the auxiliary antenna 102 needs to be removed.

FIG. 3 is a schematic diagram of resonance simulation of a main antenna in a case where an auxiliary antenna is used and an auxiliary antenna is not used according to an embodiment of the present invention.

Where curve 1 is the case where the auxiliary antenna is not used (ie, the case where only the main antenna is used alone), and curve 2 is the case where the auxiliary antenna is used (ie, the case where the main antenna and the auxiliary antenna are used together), and the number in the triangle in FIG. The label of the point. As can be seen from the curve 1 of FIG. 3, when the wearable device 10 uses only the main antenna, it can cover two frequency points of the frequency point 1 and the frequency point 6; as can be seen from the curve 2 of FIG. 3, when the wearable device 10 is When the main antenna and the auxiliary antenna are used together, the frequency point 2, the frequency point 3, the frequency point 4, and the frequency point 5 can be covered. It can be seen that when the auxiliary antenna is used together with the main antenna, the range of the communication frequency band covered by the antenna can be increased.

Further, when the main antenna and the auxiliary antenna in conjunction 1.575GH _Z (GPS signals) and 0.92GH _Z (GSM signal) produced very good resonance frequency from the frequency corresponding to the portion 6 2.18GH _Z offset to 2.4GH _Z (WiFi signal) corrects the problem of frequency offset when only the main antenna is used alone.

FIG. 4 is a schematic diagram of a main antenna using an auxiliary antenna and an auxiliary antenna without using an auxiliary antenna according to an embodiment of the present invention; Schematic diagram of frequency performance simulation.

Among them, the curve 3 is the case where the auxiliary antenna is not used (that is, the case where only the main antenna is used alone), and the curve 4 is the case where the auxiliary antenna is used (that is, the case where the main antenna and the auxiliary antenna are used together). It should be noted that the vertical axis in FIG. 4 indicates the performance of the frequency point. The larger the value is, the better the antenna frequency performance is. The smaller the value is, the worse the antenna frequency performance is. 3 can be seen from the graph of FIG. 4, when the wearable device 10 using only the main antenna points (1.575GH _Z) of poor performance in frequency GPS frequency; and can clearly be seen from the graph in FIG. 4 4 When the wearable device 10 is used in combination with the main antenna and the auxiliary antenna, the frequency performance of the GPS is improved, the frequency performance is about -2 db, and the efficiency is about 60%; in addition, the high frequency resonance shift also produced a very good performance at the frequency 2.4GH _Z, the efficiency is about 70%. It can be seen that the use of the primary antenna and the auxiliary antenna improves the antenna performance of the wearable device.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

One of ordinary skill in the art can understand that all or part of the steps in implementing the above method embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, which is referred to herein. Storage media such as ROM/RAM, disk, CD, etc.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (10)

1. A communication system, characterized in that it is applied to a wearable device, the system comprising: a main antenna, an auxiliary antenna, and a communication module;

   The main antenna is disposed inside the wearable device and is electrically connected to the communication module. The main antenna emits electromagnetic wave signals to other devices around the wearable device by radiating electromagnetic waves and transmits the other devices. Electromagnetic wave signal;

   The auxiliary antenna is configured to be externally disposed on the housing of the wearable device by electromagnetic adsorption, and the auxiliary antenna is used in combination with the main antenna by electromagnetic coupling to increase the effective length L of the main antenna;

   The communication module is disposed inside the wearable device and is electrically connected to a circuit board inside the wearable device for establishing communication with other devices around the wearable device according to an electromagnetic wave signal transmitted or received by the main antenna. Connect and communicate with other devices that establish a communication connection.
2. The system according to claim 1, wherein the length of the auxiliary antenna is a length determined according to an internal hardware structure of the wearable device and an original length L _{0 of} the main antenna.
3. The system according to claim 1, wherein said effective length L is: according to an original length L ₀ of said main antenna, a dielectric constant ε _{1 of} a dielectric surrounding said main antenna, and a dielectric surrounding said auxiliary antenna The calculated dielectric constant ε ₂ and the speed of light c are calculated, wherein the effective length is proportional to c/f, and f is a preset operating frequency point for the current environment.
4. The system according to claim 1, wherein a distance d ₁ between the main antenna and the auxiliary antenna is ≤ 2.5 mm.
5. The system according to claim 1, wherein the auxiliary antenna is further configured to be coupled to the grounded parasitic antenna and the antenna end of the main antenna by electromagnetic coupling based on an impedance system of the main antenna, respectively. Increasing the effective length of the primary antenna.
6. The system according to claim 5, characterized in that the coupling distance d ₂ of the starting end of the auxiliary antenna and the analog ground area of the circuit board is ≤ 0.1 mm.
7. The system according to claim 5, characterized in that the coupling distance d ₃ of the end of the auxiliary antenna and the end of the main antenna is ≤ 0.1 mm.
8. The system of claim 1 wherein said auxiliary antenna is a detachable antenna.
9. The system of claim 8 wherein the system further comprises:

   a data storage module, configured to store a frequency point in the communication frequency band covered by the main antenna when working alone, and the frequency The first signal strength of the point;

   The signal detecting module is configured to prompt to remove the auxiliary antenna when detecting that the second signal strength of the frequency point is lower than the first signal strength when the primary antenna is used in cooperation with the auxiliary antenna.
10. The system of claim 6 wherein said wearable device comprises two radiators:

    a radiator formed by the simulated ground region of the circuit board;

    A radiator composed of the main antenna and the auxiliary antenna.

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