Antenna components and electronic devices

Abstract

The utility model relates to the field of antenna technology, and in particular to an antenna assembly and an electronic device. The antenna assembly includes: a first radiating arm and a second radiating arm, a gap is provided between the first radiating arm and the second radiating arm, and the first upper frame point of the first radiating arm is connected to the first feed source, so that the first radiating arm generates a first resonant current, and the second radiating arm generates a second resonant current, wherein the frequency band corresponding to the first feed source is the target frequency band; a first matching circuit, the first end of the first matching circuit is connected to the second upper frame point of the second radiating arm, the second end of the first matching circuit is grounded, and the first matching circuit is used to adjust the phase of the second resonant current so that the direction of the first resonant current is the same as the direction of the second resonant current. The utility model adopting the above scheme can optimize the antenna performance.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to an antenna component and electronic equipment. Background Art

[0002] As people's demand for mobile communications increases, electronic devices need to support more mobile frequency bands to meet people's diverse scene needs. However, as electronic devices become thinner and lighter, the antenna environment of electronic devices is getting worse and worse. Therefore, how to optimize the antenna performance of electronic devices has become a focus of people's attention. Utility Model Content

[0003] The utility model provides an antenna component and electronic equipment, the main purpose of which is to optimize antenna performance.

[0004] According to one aspect of the present invention, there is provided an antenna assembly, comprising:

[0005] A first radiation arm and a second radiation arm, wherein a gap is provided between the first radiation arm and the second radiation arm, and a first upper frame point of the first radiation arm is connected to a first feed source, so that the first radiation arm generates a first resonant current and the second radiation arm generates a second resonant current, wherein a frequency band corresponding to the first feed source is a target frequency band;

[0006] A first matching circuit, wherein a first end of the first matching circuit is connected to a second upper frame point of the second radiation arm, a second end of the first matching circuit is grounded, and the first matching circuit is used to adjust the phase of the second resonant current so that the direction of the first resonant current is the same as the direction of the second resonant current.

[0007] Optionally, in an embodiment of the present invention, the first matching circuit includes an LC filter circuit, a first end of the LC filter circuit is connected to the second upper frame point, and a second end of the LC filter circuit is grounded.

[0008] Optionally, in one embodiment of the present utility model, the LC filter circuit includes a capacitor and an inductor; wherein,

[0009] The first end of the inductor is connected to the second upper frame point, the second end of the inductor is connected to the first end of the capacitor, and the second end of the capacitor is grounded; or,

[0010] The first end of the capacitor is connected to the second upper frame point, the second end of the capacitor is connected to the first end of the inductor, and the second end of the inductor is grounded.

[0011] Optionally, in an embodiment of the present invention, the capacitance value corresponding to the capacitor ranges from 0.3 pF to 0.5 pF, and the inductance value corresponding to the inductor ranges from 2 nH to 4.3 nH.

[0012] Optionally, in one embodiment of the utility model, the break is between the first end of the first radiation arm and the first end of the second radiation arm, the distance between the third upper frame point of the first radiation arm and the first end of the first radiation arm is greater than the distance between the first upper frame point and the first end of the first radiation arm, the distance between the fourth upper frame point of the second radiation arm and the first end of the second radiation arm is greater than the distance between the second upper frame point and the first end of the second radiation arm, and the third upper frame point and the fourth upper frame point are grounded.

[0013] Optionally, in one embodiment of the present utility model, the antenna assembly further includes a second matching circuit;

[0014] The first end of the second matching circuit is connected to the second upper frame point and the first end of the first matching circuit respectively, and the second end of the second matching circuit is connected to the second feed source; or,

[0015] A first end of the second matching circuit is connected to the fifth upper frame point of the second radiation arm, and a second end of the second matching circuit is connected to the second feed source.

[0016] Optionally, in one embodiment of the present invention, the target frequency band is a high frequency band, and the frequency band corresponding to the second feed source is a medium to high frequency band.

[0017] Optionally, in one embodiment of the present utility model, the distance between the second upper frame point and the first end of the second radiating arm is greater than a first distance threshold and less than a second distance threshold, the first distance threshold is the difference between a third distance threshold and a fourth distance threshold, the second distance threshold is the sum of the third distance threshold and the fourth distance threshold, the third distance threshold is one half of the distance between the fourth upper frame point and the first end of the second radiating arm, and the third distance threshold is greater than the fourth distance threshold.

[0018] Optionally, in an embodiment of the present utility model, the distance between the second upper frame point and the first end of the second radiation arm is the third distance threshold.

[0019] Optionally, in an embodiment of the present invention, the third distance threshold is 8 mm, and the distance between the second upper frame point and the first end of the second radiation arm corresponds to a distance range of 7 mm to 8 mm.

[0020] According to another aspect of the present invention, an electronic device is provided, comprising: an antenna assembly as described in any one of the aforementioned aspects.

[0021] In summary, the antenna assembly and electronic device provided by the embodiments of the utility model, when a signal of a target frequency band is fed into the first radiation arm so that the first radiation arm generates a first resonant current and the second radiation arm generates a second resonant current, the phase of the second resonant current is adjusted by setting a first matching circuit so that the first resonant current and the second resonant current have the same direction, so that the first radiation arm can reuse the antenna radiation aperture of the second radiation arm, so that the antenna radiation aperture of the first radiation arm is increased, thereby improving the antenna performance of the first radiation arm.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 A schematic diagram of the structure of an antenna assembly provided by an embodiment of the utility model;

[0025] Figure 2 A simulated current diagram of an antenna assembly without a first matching circuit provided by an embodiment of the utility model;

[0026] Figure 3 A simulation current diagram of an antenna assembly when a first matching circuit is added provided by an embodiment of the utility model;

[0027] Figure 4 A schematic structural diagram of an antenna assembly provided by another embodiment of the utility model;

[0028] Figure 5 A schematic structural diagram of an antenna assembly provided by another embodiment of the utility model;

[0029] Figure 6 A schematic structural diagram of an antenna assembly provided by yet another embodiment of the utility model;

[0030] Figure 7 A schematic diagram for comparing the radiation efficiency of a first radiation arm provided in an embodiment of the utility model.

[0031] Explanation of the reference numerals: first radiation arm 1, second radiation arm 2, first upper frame point 31, second upper frame point 32, third upper frame point 33, fourth upper frame point 34, first feed source 41, second feed source 42, first matching circuit 51, second matching circuit 52, capacitor C1, inductor L1. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0033] The utility model is described in detail below in conjunction with specific embodiments.

[0034] Figure 1 This is a schematic diagram of the structure of an antenna assembly provided by an embodiment of the utility model. Figure 1 As shown,

[0035] like Figure 1 As shown, the antenna assembly includes:

[0036] A first radiation arm 1 and a second radiation arm 2, a gap is provided between the first radiation arm 1 and the second radiation arm 2, and a first upper frame point 31 of the first radiation arm 1 is connected to a first feed source 41, so that the first radiation arm 1 generates a first resonant current and the second radiation arm 2 generates a second resonant current, wherein a frequency band corresponding to the first feed source 41 is a target frequency band;

[0037] The first matching circuit 51, the first end of the first matching circuit 51 is connected to the second upper frame point 32 of the second radiation arm 2, the second end of the first matching circuit 51 is grounded, and the first matching circuit 51 is used to adjust the phase of the second resonant current so that the direction of the first resonant current is the same as the direction of the second resonant current.

[0038] According to some embodiments, the first feed source 41 can input a signal of a target frequency band to the first radiating arm 1 through the first upper frame point 31. When the first radiating arm 1 receives the signal of the target frequency band, it can generate a first resonant current. At the same time, the second radiating arm 2 can generate a second resonant current.

[0039] In some embodiments, Figure 2 A simulated current diagram of an antenna assembly without a first matching circuit provided by an embodiment of the utility model, Figure 3 This is a simulation current diagram of an antenna assembly when a first matching circuit is added according to an embodiment of the utility model. Figure 2 and Figure 3 As shown, when the target frequency band is a high frequency band, the directions of the first resonant current and the second resonant current are opposite when the first matching circuit 51 is not added. After the first matching circuit 51 is added, the directions of the first resonant current and the second resonant current are the same.

[0040] It should be noted that when the first resonant current and the second resonant current have the same direction, the radiation aperture of the first radiation arm 1 can be increased, thereby improving the performance of the first radiation arm 1 .

[0041] Optionally, the first matching circuit 51 includes an LC filter circuit, a first end of the LC filter circuit is connected to the second upper frame point, and a second end of the LC filter circuit is grounded.

[0042] According to some embodiments, when the second resonant current is generated in the second radiation arm 2, if the first matching circuit 51 is not added, the instantaneous value of the second resonant current is expressed as I=i*sin(ωt+φo); wherein I is the instantaneous value of the second resonant current, i is the effective value of the second resonant current, ω is the angular frequency, ω=2πf, f is the target frequency band, t is the time, and φo is the initial phase angle.

[0043] In some embodiments, after loading the LC filter circuit which can be equivalent to a capacitor, the LC filter circuit will first absorb current, and the accumulation process of this mobile charge leads to the generation of current, and then the voltage on the LC filter circuit will change. This means that during the charging process of the LC filter circuit, the current always appears before the voltage, that is, the current phase leads the voltage phase.

[0044] That is to say, if the voltage corresponding to the second resonant current is expressed as V=v*sin(ωt+φo), then the second resonant current I can be expressed as I=Cdv(t) / dt, which will result in I=i*cos(ωt+φo), that is, the current leads the voltage by 90° phase; wherein V is the instantaneous value of the voltage, v is the effective value of the voltage, C is the equivalent capacitance value of the LC filter circuit, and i=C*v*2πf.

[0045] According to some embodiments, the equivalent capacitance value C of the LC filter circuit is less than the equivalent capacitance threshold value. The equivalent capacitance threshold value may be, for example, 1 pF. In this case, the current phase leading effect may be improved.

[0046] In some embodiments, Figure 4 This is a schematic diagram of the structure of an antenna assembly provided by an embodiment of the utility model. Figure 4 As shown, the LC filter circuit includes a capacitor C1 and an inductor L1; wherein,

[0047] A first end of the inductor L1 is connected to the second upper frame point 32 , a second end of the inductor L1 is connected to a first end of the capacitor C1 , and a second end of the capacitor C1 is grounded.

[0048] It should be noted that the connection method between the capacitor C1 and the inductor L1 is not limited to Figure 4 As shown in the connection mode, for example, the connection mode between the capacitor C1 and the inductor L1 can be that the first end of the capacitor C1 is connected to the second upper frame point 32, the second end of the capacitor C1 is connected to the first end of the inductor L1, and the second end of the inductor L1 is grounded.

[0049] According to some embodiments, when the capacitor C1 and the inductor L1 are connected in series, the equivalent capacitance value C, the capacitance value C1 corresponding to the capacitor C1, the inductance value L1 corresponding to the inductor L1, and the target frequency band f satisfy the expression: C=C1 / (1-ω2L1C1).

[0050] In some embodiments, when C<1 pF, the capacitance value C1 corresponding to the capacitor ranges from 0.3 pF to 0.5 pF, and the inductance value L1 corresponding to the inductor ranges from 2 nH to 4.3 nH. In this case, the current phase leading effect can be improved.

[0051] Optionally, Figure 5 This is a schematic diagram of the structure of an antenna assembly provided by an embodiment of the utility model. Figure 5 As shown, the distance between the third upper frame point 33 of the first radiation arm 1 and the first end of the first radiation arm 1 is greater than the distance between the first upper frame point 31 and the first end of the first radiation arm 1, the distance between the fourth upper frame point 34 of the second radiation arm 2 and the first end of the second radiation arm 2 is greater than the distance between the second upper frame point 32 and the first end of the second radiation arm 2, and the third upper frame point 33 and the fourth upper frame point 34 are grounded.

[0052] According to some embodiments, the first resonant current may flow through the first upper frame point 31 and the third upper frame point 33 in sequence and then go to ground.

[0053] In some embodiments, when the first matching circuit 51 is not added, the second resonant current can flow from the first end of the second radiation arm 2 to the ground at the fourth upper frame point 34; after loading the first matching circuit 51, since the distance between the fourth upper frame point 34 and the first end of the second radiation arm 2 is greater than the distance between the second upper frame point 32 and the first end of the second radiation arm 2, the second resonant current will flow from the first end of the second radiation arm 2 to the ground at the second upper frame point 32, instead of flowing to the fourth upper frame point 34, thereby reducing the return path of the second resonant current, and the phase of the second resonant current will also change.

[0054] According to some embodiments, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 may be greater than a first distance threshold and less than a second distance threshold; wherein the first distance threshold is the difference between the third distance threshold and the fourth distance threshold, the second distance threshold is the sum of the third distance threshold and the fourth distance threshold, and the third distance threshold is half of the distance between the fourth upper frame point 34 and the first end of the second radiating arm 2.

[0055] In some embodiments, the third distance threshold is greater than the fourth distance threshold. For example, the third distance threshold may be 8 mm, and the fourth distance threshold may be 1 mm. In this case, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 corresponds to a distance range of 7 mm to 9 mm.

[0056] In some embodiments, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 may be a third distance threshold. For example, when the third distance threshold is 8 mm, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 may also be 8 mm.

[0057] In some embodiments, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 may also be greater than the first distance threshold and less than the third distance threshold. For example, when the third distance threshold is 8 mm and the fourth distance threshold is 1 mm, the distance between the second upper frame point 32 and the first end of the second radiating arm 2 corresponds to a distance range of 7 mm to 8 mm.

[0058] According to some embodiments, the return path of the second resonant current becomes shorter, and the phase of the second resonant current will also advance by a corresponding angle. For example, when the first matching circuit 51 is not added, the second resonant current flows from the first end of the second radiation arm 2 to the fourth upper frame point 34 to the ground, and a return period is 180 degrees, if the distance between the second upper frame point 32 and the first end of the second radiation arm 2 is the third distance threshold, the return path is shortened by half, and the return period will be advanced by half to 90 degrees, so that the phase of the second resonant current is advanced by 90 degrees.

[0059] In some embodiments, the third distance threshold is an error value of the distance between the second upper frame point 32 and the first end of the second radiation arm 2. When the distance between the second upper frame point 32 and the first end of the second radiation arm 2 can be greater than the first distance threshold and less than the second distance threshold, the phase lead angle of the second resonant current can be regarded as the phase lead angle when the third distance threshold is the distance between the second upper frame point 32 and the first end of the second radiation arm 2 is the third distance threshold. For example, when the distance between the second upper frame point 32 and the first end of the second radiation arm 2 is 8 mm, and the phase of the second resonant current leads by 90 degrees, when the distance range corresponding to the distance between the second upper frame point 32 and the first end of the second radiation arm 2 is 7 mm to 9 mm, the phase lead angle of the second resonant current can be regarded as 90 degrees.

[0060] It should be noted that if Figure 2 As shown, when the target frequency band is a high frequency band, the directions of the first resonant current and the second resonant current are opposite when the first matching circuit 51 is not added. In this case, the first matching circuit 51 is loaded, the first matching circuit 51 includes an LC filter circuit, and the distance between the second upper frame point 32 and the first end of the second radiation arm 2 can be greater than the first distance threshold and less than the second distance threshold, then the phase of the second resonant current will be cumulatively advanced by 180 degrees, so that the directions of the first resonant current and the second resonant current can be the same.

[0061] Optionally, Figure 6 This is a schematic diagram of the structure of an antenna assembly provided by an embodiment of the utility model. Figure 6 As shown, the antenna assembly further includes a second matching circuit 52;

[0062] A first end of the second matching circuit 52 is connected to the second upper frame point 32 and the first end of the first matching circuit 51 , respectively, and a second end of the second matching circuit 52 is connected to the second feed source 42 .

[0063] According to some embodiments, the second matching circuit 52 may not be connected to the second radiation arm 2 through the second upper frame point 32. In this case, the first end of the second matching circuit 52 is connected to the fifth upper frame point of the second radiation arm 2, and the second end of the second matching circuit 52 is connected to the second feed source 42.

[0064] In some embodiments, the second feed source 42 may input a signal of a corresponding frequency band to the second radiation arm 2 through the second upper frame point 32 , and the second radiation arm 2 may generate a third resonant current when receiving the signal of the corresponding frequency band.

[0065] Optionally, the first upper frame point 31 of the first radiating arm 1 can also be connected to a third feed. The frequency bands corresponding to the first feed 41, the second feed 42, and the third feed are all different. For example, when the target frequency band is a high frequency band, the frequency band corresponding to the second feed 42 can be a mid-high frequency band (Mid and High Band, MHB), and the frequency band corresponding to the third feed can be a low frequency band (LowBand, LB).

[0066] According to some embodiments, the high frequency band may be, for example, the N78 frequency band, and the frequency value corresponding to the N78 frequency band may be 3.6 GHz.

[0067] In some embodiments, when the target frequency band is 3.6 GHz and the distance between the first upper frame point and the first end of the first radiation arm is 9 mm, the working mode of the first radiation arm 1 is a quarter mode from the first upper frame point 11 to the first end of the first radiation arm 1. Figure 7 A schematic diagram comparing the radiation efficiency of a first radiation arm provided by an embodiment of the utility model. Figure 7 As shown, the radiation efficiency of the first radiation arm 1 is -6.9 dB when the LC filtering circuit is not provided, and the radiation efficiency of the first radiation arm 1 is -4.5 dB when the LC filtering circuit is loaded, and the performance of the first radiation arm 1 is improved by 2.4 dB.

[0068] In summary, the antenna assembly provided by the embodiment of the utility model feeds a signal of a target frequency band into the first radiation arm so that the first radiation arm generates a first resonant current and the second radiation arm generates a second resonant current. By setting a first matching circuit, the phase of the second resonant current is adjusted so that the first resonant current and the second resonant current have the same direction. In this way, the first radiation arm can reuse the antenna radiation aperture of the second radiation arm, thereby increasing the antenna radiation aperture of the first radiation arm, thereby improving the antenna performance of the first radiation arm.

[0069] According to an embodiment of the utility model, the utility model also provides an electronic device.

[0070] The electronic device includes: and an antenna assembly as shown in any of the above embodiments.

[0071] According to some embodiments, the electronic device may include a metal frame, and the first radiation arm 1 and the second radiation arm 2 may be obtained by cutting the metal frame.

[0072] The electronic device of the embodiment of the utility model optimizes the antenna performance of the electronic device by using the above antenna assembly.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms may be for different embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An antenna assembly, characterized in that: include: A first radiation arm and a second radiation arm, wherein a gap is provided between the first radiation arm and the second radiation arm, and a first upper frame point of the first radiation arm is connected to a first feed source, so that the first radiation arm generates a first resonant current and the second radiation arm generates a second resonant current, wherein a frequency band corresponding to the first feed source is a target frequency band; A first matching circuit, wherein a first end of the first matching circuit is connected to a second upper frame point of the second radiation arm, a second end of the first matching circuit is grounded, and the first matching circuit is used to adjust the phase of the second resonant current so that the direction of the first resonant current is the same as the direction of the second resonant current.

2. The antenna assembly according to claim 1, characterized in that: The first matching circuit includes an LC filter circuit, a first end of the LC filter circuit is connected to the second upper frame point, and a second end of the LC filter circuit is grounded.

3. The antenna assembly according to claim 2, characterized in that: The LC filter circuit includes a capacitor and an inductor; wherein, The first end of the inductor is connected to the second upper frame point, the second end of the inductor is connected to the first end of the capacitor, and the second end of the capacitor is grounded; or, The first end of the capacitor is connected to the second upper frame point, the second end of the capacitor is connected to the first end of the inductor, and the second end of the inductor is grounded.

4. The antenna assembly according to claim 3, characterized in that: The capacitance value corresponding to the capacitor ranges from 0.3 pF to 0.5 pF, and the inductance value corresponding to the inductor ranges from 2 nH to 4.3 nH.

5. The antenna assembly according to claim 1, characterized in that: The break is between the first end of the first radiation arm and the first end of the second radiation arm, the distance between the third upper frame point of the first radiation arm and the first end of the first radiation arm is greater than the distance between the first upper frame point and the first end of the first radiation arm, the distance between the fourth upper frame point of the second radiation arm and the first end of the second radiation arm is greater than the distance between the second upper frame point and the first end of the second radiation arm, and the third upper frame point and the fourth upper frame point are grounded.

6. The antenna assembly according to claim 5, characterized in that: The antenna assembly also includes a second matching circuit; The first end of the second matching circuit is connected to the second upper frame point and the first end of the first matching circuit respectively, and the second end of the second matching circuit is connected to the second feed source; or, A first end of the second matching circuit is connected to the fifth upper frame point of the second radiation arm, and a second end of the second matching circuit is connected to the second feed source.

7. The antenna assembly according to claim 6, characterized in that: The target frequency band is a high frequency band, and the frequency band corresponding to the second feed source is a medium to high frequency band.

8. The antenna assembly according to claim 5, characterized in that: The distance between the second upper frame point and the first end of the second radiating arm is greater than a first distance threshold and less than a second distance threshold, the first distance threshold is the difference between a third distance threshold and a fourth distance threshold, the second distance threshold is the sum of the third distance threshold and the fourth distance threshold, the third distance threshold is one half of the distance between the fourth upper frame point and the first end of the second radiating arm, and the third distance threshold is greater than the fourth distance threshold.

9. The antenna assembly according to claim 8, characterized in that: The distance between the second upper frame point and the first end of the second radiation arm is the third distance threshold.

10. The antenna assembly according to claim 8, characterized in that: The third distance threshold is 8 mm, and the distance between the second upper frame point and the first end of the second radiation arm corresponds to a distance range of 7 mm to 8 mm.

11. An electronic device, characterized in that: include: An antenna assembly as claimed in any one of claims 1 to 10.

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