A method for adjusting antenna radiation pattern and terminal equipment

Abstract

The present invention discloses a method for adjusting the antenna radiation pattern and a terminal device, wherein the method comprises: determining a first radiation field according to a first radiation unit; determining a first position according to the first radiation field; and setting a second radiation unit at the first position to adjust the pattern of the first radiation field to improve data interaction capability. The present invention can set a second radiation unit according to the pattern of the radiation field of the first radiation unit, improve the pattern of the first radiation field by adding the second radiation unit, and improve the data interaction capability of the first radiation field.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method for adjusting an antenna radiation pattern and a terminal device. Background Art

[0002] With the continuous development of communication technology, mobile phones, computers and other terminal devices are becoming more and more popular. At present, all kinds of terminal devices are equipped with antennas to receive and transmit signals.

[0003] However, in existing terminal devices, since the terminal devices are equipped with metal casings, the antenna radiation pattern is greatly affected. The antenna gain is low in some directions, resulting in low data throughput at some angles, which directly leads to poor Internet experience for users in these directions. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a method and terminal device for improving the electromagnetic field pattern of antenna radiation, so as to solve the problem in the prior art that the antenna gain in certain directions is low, resulting in a poor Internet experience for users.

[0005] In order to solve the above technical problems, an embodiment of the present invention adopts the following technical solution: a method for adjusting an antenna radiation pattern, comprising:

[0006] determining a first radiation field according to the first radiation unit;

[0007] determining a first position according to the first radiation field;

[0008] A second radiation unit is arranged at the first position to adjust the field pattern of the first radiation field to improve data interaction capability.

[0009] Optionally, determining the first position according to the first radiation field specifically includes:

[0010] determining a first direction relative to the first radiation unit according to a field pattern of a radiation far field of the first radiation field;

[0011] According to the position outside the radiation near-field region of the first radiation field and the first direction, a position outside the radiation near-field region in the first direction is determined as the first position.

[0012] Optionally, the method further includes:

[0013] The first calculation formula and the second calculation formula are used to calculate to determine the length of the radiation branch in the second radiation unit, so as to set the radiation branch in the radiation unit according to the length.

[0014] Optionally, the first calculation formula is:

[0015] The second calculation formula is:

[0016] in:

[0017] d represents the length of the radiation branch of the second radiation unit.

[0018] λ represents the operating wavelength of the first radiation unit;

[0019] c represents the speed of light;

[0020] f represents the operating frequency of the first radiation unit;

[0021] ε represents the dielectric constant of the shell material connected to the radiation branch of the second radiation unit.

[0022] Optionally, the method further includes connecting a ground branch of the second radiation unit to a non-insulating shell of the terminal device; and connecting a radiation branch of the second radiation unit to an insulating shell of the terminal device.

[0023] In order to solve the above technical problem, the present invention implements a terminal device, in which a first radiation unit and a second radiation unit are arranged; wherein the second radiation unit is arranged at a first position at a predetermined distance and in a predetermined direction from the first radiation unit.

[0024] Optionally, the first position is: a position between a radiation near-field region and a radiation far-field region of a first radiation field of the first radiation unit.

[0025] Optionally, the length of the radiation branch of the second radiation unit ranges from half to one eighth of the working wavelength of the first radiation unit.

[0026] Optionally, the second radiation unit includes a radiation branch and a ground branch, the radiation branch is connected to the shell of the terminal device, and the ground branch is connected to the non-insulated shell of the terminal device.

[0027] Optionally, a radiation slot is provided on the shell connected to the radiation branch.

[0028] The beneficial effect of the embodiment of the present invention is that the second radiation unit can be set according to the field pattern of the radiation field of the first radiation unit, and the field pattern of the first radiation field can be adjusted by adding the second radiation unit to improve the data interaction capability of the first radiation field. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a flow chart of a method for adjusting an antenna radiation pattern according to an embodiment of the present invention;

[0030] Figure 2is a simulation diagram of the first radiation field of the first radiation unit of the present invention;

[0031] Figure 3 A schematic diagram of a flow chart of a method for adjusting an antenna radiation pattern according to an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of a terminal device according to an embodiment of the present invention;

[0033] Figure 5 A simulation diagram of a radiation field when only the first radiation unit is provided in an existing terminal device;

[0034] Figure 6 A radiation pattern when only the first radiation unit is provided in the existing terminal device;

[0035] Figure 7 A current distribution diagram of a bottom metal shell when only the first radiation unit is provided in an existing terminal device;

[0036] Figure 8 The radiation pattern of the first radiation unit in the terminal device according to the embodiment of the present invention;

[0037] Fig. 9 This is a current distribution diagram of the bottom metal shell of the terminal device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0039] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0040] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0041] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0042] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0043] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0044] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0045] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0046] The present invention provides a method for adjusting the antenna radiation pattern, comprising: determining a first radiation field according to a first radiation unit; determining a first position according to the first radiation field; and setting a second radiation unit at the first position to adjust the pattern of the first radiation field to improve data interaction capability. The present invention can set a second radiation unit according to the pattern of the radiation field of the first radiation unit, improve the pattern of the first radiation field by adding the second radiation unit, and improve the data interaction capability of the first radiation field.

[0047] Another embodiment of the present invention provides a method for adjusting the antenna radiation pattern, combining Figure 1 As shown, the following steps are included:

[0048] Step S101, determining a first radiation field according to a first radiation unit;

[0049] In this step, the first radiation unit may be an antenna disposed in the terminal device. When the antenna is disposed at a certain position in the terminal device, the first radiation field may be determined according to the working frequency, size, length and wavelength of the antenna. Figure 2 , which is a schematic diagram of a first radiation field of a first radiation unit in a terminal device.

[0050] Step S102, determining a first position according to the first radiation field;

[0051] In this step, after the first radiation field is determined, for example, Figure 2 After the first radiation field represented by the first position is determined according to the radiation field, such as Figure 2 The position indicated in the box is the first position.

[0052] Step S103: setting a second radiation unit at the first position to adjust the field pattern of the first radiation field to improve data interaction capability.

[0053] In an embodiment of the present invention, the location of the radiation blind spot is determined based on the radiation field of the first radiation unit, and the radiation field energy distribution and the boundary area between the near field and the middle field area are analyzed, so that a plurality of second radiation units are added in this boundary area to improve the antenna radiation field pattern (in fact, the adjusted radiation field is the superposition of the radiation field of the first radiation unit and the radiation field of the second radiation unit), thereby improving the communication capability, increasing the data throughput, and further improving the user's Internet experience.

[0054] Another embodiment of the present invention provides a method for adjusting the antenna radiation pattern, such as Figure 3 As shown, the following steps are included:

[0055] Step S201, determining a first radiation field according to a first radiation unit;

[0056] Step S202, determining a first direction relative to the first radiation unit according to a field pattern of a radiation far field of the first radiation field; determining a position outside the radiation near field region in the first direction as a first position according to a position outside the radiation near field region of the first radiation field and the first direction;

[0057] In this step, after determining the first radiation field, the radiation near-field area and the radiation far-field area can be determined according to the operating frequency f, the size D and the wavelength λ of the first radiation unit (radiation antenna). The position where the radiation far-field has a radiation defect (the field intensity of the radiation field is relatively weak) is determined by analyzing the field pattern of the radiation far-field area, and the first direction is determined according to the orientation of the first radiation unit at that position. For example, relative to the first radiation unit, six directions of up, down, front, back, left and right of the first radiation unit can be determined; if the far field of the first radiation field has a radiation defect (the field intensity of the radiation field is relatively weak) at the position to the right of the first radiation unit, then the right side relative to the first radiation unit is determined to be the first direction; then the position outside the near-field area of ​​the first radiation field is determined, and the position outside the radiation near-field area in the first direction is determined to be the first position. In this embodiment Represents the boundary value of the radiation near field area (that is, the area with a radiation radius r less than this value is the radiation near field area).

[0058] Preferably, in order to improve the effect of adjusting the first radiation field pattern, the position between the radiation near field area and the radiation far field area in the first direction can be used as the first position. Specifically, It represents the boundary value of the radiation far field area (that is, the area where the radiation radius r is greater than this value is the radiation far field area). Therefore, as long as the radiation radius r satisfies: That is, the radiation position corresponding to r in the first direction can be determined as the first position. Since the first radiation field is three-dimensional, there will be some r that meet the conditions, but the positions corresponding to some r are outside the terminal device, so these positions can be excluded, and the first position that meets the conditions and is located on the terminal device is taken as the final first position.

[0059] Step S203: setting a second radiation unit at the first position to adjust the field pattern of the first radiation field to improve data interaction capability.

[0060] In this step, after the radiation near field area and the radiation far field area are determined, the first position can be determined between the near field area and the far field area. Specifically, in this step, when setting the second radiation unit, several second radiation units can be set according to actual conditions.

[0061] Specifically, in an embodiment of the present invention, after determining the first position, a first calculation formula and a second calculation formula are also included to perform calculations to determine the length of the radiation branch in the second radiation unit, so as to set the radiation branch in the radiation unit according to the length.

[0062] The first calculation formula is: The second calculation formula is: Where: d represents the length of the radiation branch of the second radiation unit; λ represents the working wavelength of the first radiation unit; c represents the speed of light; f represents the working frequency of the first radiation unit; ε represents the dielectric constant of the shell material connected to the radiation branch of the second radiation unit. Preferably, the length d of the radiation branch of the second radiation unit can be set to one quarter of the working wavelength of the first radiation unit, that is,

[0063] For example, the radiation branch of the second radiation unit is to solve the radiation field pattern of the 2.4-2.5G frequency band (radiation field pattern of the first radiation unit), then according to the formula And the formula It can be determined that the length of the radiation branch of the second radiation unit is about 20 mm, and the radiation branch can specifically be a metal sheet.

[0064] In an embodiment of the present invention, after determining the first position and determining the length of the radiation branch of the second radiation unit, in the specific setting process, the grounding branch of the second radiation unit is connected to the non-insulating shell of the terminal device; the radiation branch of the second radiation unit is connected to the insulating shell of the terminal device. For example, if the terminal device is a laptop computer, the grounding branch can be connected to the metal shell at the bottom of the laptop computer to ground the grounding branch, and the radiation branch of the second radiation unit corresponds to the insulating keyboard shell of the laptop computer. If the keyboard shell of the laptop computer is also a non-insulating body, such as a metal material, a slot can be set on the metal keyboard shell, and the position of the slot corresponds to the radiation branch of the second radiation unit, so that the influence of the metal keyboard shell on the radiation branch can be avoided.

[0065] Another embodiment of the present invention provides a terminal device, such as Figure 4 As shown, a first radiation unit A and a second radiation unit B are provided in the terminal device; wherein the second radiation unit is provided at a first position at a predetermined distance and in a predetermined direction from the first radiation unit. In this embodiment, the first radiation unit is a radiation antenna, and the second radiation unit is also a radiation antenna. In the specific implementation process, the number of the second radiation units (second radiation antennas) can be several, which can be specifically set according to actual needs.

[0066] In an embodiment of the present invention, a second radiation unit is arranged at a predetermined distance and in a predetermined direction from the first radiation unit, and the second radiation unit is used to adjust the field pattern of the first radiation field of the first radiation unit (in fact, the adjusted radiation field is the superposition of the radiation field of the first radiation unit and the radiation field of the second radiation unit), thereby improving the data interaction capability of the first radiation field.

[0067] The first position is: a position located in the first direction of the first radiation unit and outside the radiation near field of the first radiation field of the first radiation unit. Preferably, in order to improve the effect of adjusting the field pattern of the first radiation field, the first position can be: a position located in the first direction of the first radiation unit and between the near field and far field of the first radiation field of the first radiation unit, and the second radiation unit is arranged in this position between the first radiation unit and the first radiation unit.

[0068] Taking the first position as an example, that is, a position located in the first direction of the first radiation unit and between the near field region and the far field region of the first radiation field of the first radiation unit, in a specific implementation process, Figure 4As shown, a first radiation unit A can be firstly arranged at the hinge of the terminal device (laptop computer), and a first direction relative to the first radiation unit is determined according to the field pattern of the radiation far field of the first radiation field of the first radiation unit, and then a position between the radiation near field area and the radiation far field area in the first direction is determined as the first position. Specifically, after the first radiation unit is arranged, the radiation near field area and the radiation far field area can be determined according to the operating frequency f, the size D and the wavelength λ of the first radiation unit (radiation antenna). Represents the boundary value of the radiation near field area (that is, the area with a radiation radius r less than this value is the radiation near field area). It represents the boundary value of the radiation far field area (that is, the area where the radiation radius r is greater than this value is the radiation far field area). Therefore, as long as the radiation radius r satisfies: That is, the radiation position corresponding to r located in the first direction can be determined as the predetermined distance. Since the radiation field is three-dimensional, there are several r that meet the conditions, but the positions corresponding to some r are located outside the terminal device and do not meet the direction requirements, so these r can be excluded, and the r that meets the conditions and is located on the terminal device is taken as the final r, so that the predetermined direction located at the first radiation unit is determined, thereby determining the first position.

[0069] Another embodiment of the present invention provides a terminal device. In this embodiment, after the second radiation unit is set at the first position, in order to achieve a better effect of adjusting the field pattern, the length of the radiation branch of the second radiation unit can be set to half of the working wavelength of the first radiation unit to one eighth of the working wavelength of the first radiation unit. Preferably, the length of the radiation branch of the second radiation unit can be set to one quarter of the working wavelength of the first radiation unit.

[0070] Furthermore, in this embodiment, the second radiation unit includes a radiation branch and a ground branch, wherein the radiation branch is connected to the shell of the terminal device, and the ground branch is connected to the non-insulated shell of the terminal device.

[0071] In order to ensure the radiation capability of the radiation branches, radiation slots may be provided on the housing connected to the radiation branches.

[0072] For example, the terminal device is a laptop computer, the bottom shell of which is a metal shell, and the shell at the keyboard is non-metallic (such as plastic), then the grounding branch of the second radiation unit can be connected to the metal shell to be grounded, and the radiation branch can be made to correspond to the keyboard shell. If the bottom shell of the laptop computer is a metal shell, and the shell at the keyboard is also a metal shell, then the grounding branch of the second radiation unit can be connected to the metal shell to be grounded, and the radiation branch can be made to correspond to the keyboard shell, and a radiation slot hole is set on the metal keyboard, and the position of the radiation slot hole corresponds to the radiation branch, so as to ensure the radiation capacity of the radiation branch and avoid the influence of the metal keyboard on the radiation of the radiation branch.

[0073] Specifically, after the second radiation unit is provided, the position or direction of the radiation unit may be fine-tuned according to actual needs to achieve optimal guiding performance.

[0074] In the embodiment of the present invention, a first radiation unit A is provided at the rotating shaft of the terminal device (laptop computer), such as Figure 4 Before the second radiation unit is set, the first radiation field schematic diagram of the first radiation unit A is as shown in Figure 5 As shown; Figure 6 represents the radiation pattern of the first radiation unit A before the second radiation unit is set; Figure 7 , which shows the current distribution diagram of the metal shell at the bottom of the terminal device before the second radiation unit is set. Figure 6 It can be seen that before setting the second radiation unit, Figure 6 The gain at position 4 (270°) is -9.187dBi. Compared with the performance in the other three directions (-2 to 0dBi), 270° is a very obvious radiation defect area. The radiation dead angle is caused by the metal surfaces of the upper and lower shells of the terminal device and the metal hinges. After the second radiation unit B is set at the first position by the method of the present invention (such as Figure 4 As shown), we can obtain Figure 8 The radiation pattern shown and Fig. 9 The current distribution diagram of the metal shell is shown. Figure 8 It can be seen that the antenna gain at position 4 (270°) is -5.658dBi, which is Figure 6 There is a nearly 4dB improvement (3dB is double the performance), which can increase the coverage distance by more than 1 / 2 in terms of data throughput, thus improving the data interaction capability. Fig. 9 and Figure 7 By comparison, it can be seen that after the second radiation unit is provided, the current distribution of the metal shell at the bottom of the terminal device has been completely changed by the newly added radiation unit.

[0075] In the embodiment of the present invention, since there are a lot of metal or high dielectric constant materials around the antenna: when the shell parts corresponding to the four surfaces A / B / C / D of the laptop are metal or all are metal or high dielectric constant materials, the antenna clearance area will be small, resulting in defective antenna radiation. By analyzing the distribution of the electromagnetic field radiated by the antenna in the whole machine, the location of the radiation dead angle is determined, and the radiation field energy distribution and the boundary area between the near field and the midfield area are analyzed. Then, one or more radiation units that guide the transmission of electromagnetic waves are added in this boundary area.

[0076] Specifically, for partially metal products (the shell of some of the four surfaces A / B / C / D is made of metal), a quarter-wavelength conductive material can be added as a radiation unit to guide electromagnetic wave transmission. For all-metal products (the shell of the four surfaces A / B / C / D is all made of metal), after adding a quarter-wavelength conductive material as a radiation unit to guide electromagnetic wave transmission, slots can be set on the metal shell of the corresponding radiation unit as radiation holes to guide electromagnetic wave transmission radiation units.

[0077] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A method for adjusting antenna radiation pattern, characterized in that: include: Determining the first radiation field according to the operating frequency, size and wavelength of the first radiation unit; Determine the position where the radiation has a dead angle according to the first radiation field, determine the energy distribution of the radiation field and the boundary area between the near field and the midfield area, and determine the first position; Wherein, determining the first position further includes: Determine a position where a radiation defect exists in the radiation far field according to a field pattern of the radiation far field of the first radiation field, and determine a first direction relative to the first radiation unit according to the position of the radiation defect at the position of the first radiation unit; According to the position outside the radiation near field region of the first radiation field and the first direction, a position between the radiation near field region and the radiation far field region in the first direction is determined as the first position; and the radiation radius r satisfies: That is, the radiation position corresponding to r in the first direction can be determined as the first position, wherein, represents the boundary value of the radiation far field area, λ is the working wavelength of the first radiation unit, and D is the length of the first radiation unit; A second radiation unit is arranged at the first position to adjust the field pattern of the first radiation field to improve data interaction capability.

2. The method according to claim 1, characterized in that The method further comprises: Calculating using the first calculation formula and the second formula to determine the length of the radiation branch in the second radiation unit, so as to set the radiation branch in the radiation unit according to the length; The first calculation formula is: The second formula is: in: d represents the length of the radiation branch of the second radiation unit; c represents the speed of light; f represents the operating frequency of the first radiation unit; ε represents the dielectric constant of the shell material connected to the radiation branch of the second radiation unit.

3. The method according to claim 1, characterized in that The method further includes connecting the grounding branch of the second radiation unit to a non-insulating shell of the terminal device; and connecting the radiation branch of the second radiation unit to an insulating shell of the terminal device.

4. A terminal device, characterized in that: Adopting the method as claimed in any one of claims 1 to 3 to adjust the antenna radiation pattern; The terminal device is provided with a first radiation unit and a second radiation unit; wherein the second radiation unit is provided at a first position at a predetermined distance and in a predetermined direction from the first radiation unit; The first position is: a position between a radiation near-field region and a radiation far-field region of a first radiation field of the first radiation unit.

5. The terminal device according to claim 4, characterized in that: The length of the radiation branch of the second radiation unit ranges from half to one eighth of the working wavelength of the first radiation unit.

6. The terminal device according to claim 4, characterized in that: The second radiation unit includes a radiation branch and a ground branch, the radiation branch is connected to the shell of the terminal device, and the ground branch is connected to the non-insulated shell of the terminal device.

7. The terminal device according to claim 6, characterized in that: A radiation slot is arranged on the shell connected to the radiation branch.

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