CN210092334U - Antenna structure and communication equipment - Google Patents

Abstract

The utility model provides an antenna structure and communication equipment, the antenna structure (100) comprises a metal back shell (2) and a metal frame arranged around the metal back shell (2), and a first breakpoint (161), a second breakpoint (162) and a gap (18) are arranged on the metal frame; the part of the metal frame, which is positioned between the first breakpoint (161) and the second breakpoint (162), is formed into a radiator (10), and a feed part (14) is arranged on the radiator (10); the radiator (10) is divided by the feed portion (14) to form a first radiation portion (101) and a second radiation portion (102), a first parasitic wire (111) which is grounded after being bent in a three-dimensional manner extends from the first radiation portion (101), and a second parasitic wire (112) which is grounded after being bent in a three-dimensional manner extends from the second radiation portion (102). By using the antenna structure and the communication equipment, the coverage of LTE full frequency band and Sub _6GHz full frequency band can be realized in the full metal environment.

Description

Antenna structure and communication equipment

Technical Field

The utility model belongs to antenna communication field, concretely relates to antenna structure and communication equipment.

Background

With the rapid development of communication technology and electronic information technology, it has become practical to perform wireless communication with a tablet computer through a notebook computer. Therefore, the quality of the antenna performance directly affects the communication reliability, the signal strength and the data communication speed of the communication equipment, and further affects the customer experience.

With the rapid development of mobile communication networks, different network systems used by different operators are different, such as GSM, WCDMA, TD-cdma lte4G, 5G, and other communication networks, and different network systems need to occupy different spectrum resources. For notebook computers or tablet computers, it is an urgent problem to cover such a wide frequency band while maintaining a metallic feeling.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problem that the integrated antenna in the prior art is difficult to integrate a frequency range of a wider frequency band in a full metal environment, an antenna structure is provided, by which the above-mentioned problem can be solved.

The utility model provides a following scheme.

An antenna structure comprises a metal back shell and a metal frame arranged around the metal back shell, wherein a first breakpoint and a second breakpoint are arranged on the metal frame, and a gap communicated with the first breakpoint and the second breakpoint is arranged between the metal frame and the metal back shell; the part of the metal frame, which is positioned between the first breakpoint and the second breakpoint, is formed into a radiator, and a feed part is arranged on the radiator; the part of the radiator between the feed part and the first breakpoint forms a first radiation part for exciting first resonance, a first parasitic wire which is grounded after being bent in a three-dimensional manner extends from the first radiation part, and the first parasitic wire is used for adjusting the first resonance; a part of the radiator between the feeding part and the second break point is formed into a second radiation part for exciting a second resonance; and a second parasitic wire which is grounded after being bent in a three-dimensional manner is arranged in an extending manner from the second radiation part, and the second parasitic wire is used for adjusting second resonance.

Preferably, the first parasitic trace is grounded through the tunable element, wherein the tunable element is composed of a switch and/or a variable capacitor; the second parasitic trace is grounded through a matching element, wherein the matching element is composed of a capacitor and/or an inductor.

Preferably, a first radiation gap is formed between the first parasitic trace and the first radiation part; forming a second radiation gap between the second parasitic routing and the second radiation part; the first radiation gap and the second radiation gap are used for exciting to generate third resonance.

Preferably, an L-shaped first extension portion bent in a plane is extended from the end of the first radiation portion close to the first break point, so as to widen the bandwidth of the first resonance; an L-shaped second extension part bent in a plane is arranged at the tail end of the second radiation part close to the second breakpoint in an extending mode and used for widening the frequency width of the second resonance.

Preferably, a third radiation gap for exciting a fourth resonance is formed between the first extension part and the first radiation part, wherein the frequency range of the fourth resonance is 2176MHz to 2690 MHz.

Preferably, on the metal frame, a first slot is formed from the first breakpoint to one side far away from the radiator, and a second slot is formed from the second breakpoint to one side far away from the radiator; wherein the first slot and the second slot are used to generate a coupling resonance to tune a frequency band associated with the slot length.

Preferably, the frequency range of the first resonance is 617MHz to 960MHz, the frequency range of the second resonance is 1710MHz to 2690MHz, and the frequency range of the third resonance is 3400MHz to 5000 MHz.

Preferably, the first break point, the second break point and the gap are filled with insulating materials, and the first parasitic wire and the second parasitic wire are fixed to the metal back shell through the insulator bracket.

A communication device comprising a device body and at least one antenna arrangement as described above, the antenna arrangement being at least partially disposed within the device body.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects: the utility model provides an antenna structure form is simple, easily realizes, has not only realized the full frequency channel of LTE and the full frequency channel's of Sub _6GHz cover, and the metal that remains notebook or panel computer that can also be fine is felt.

It should be understood that the above description is only an overview of the technical solutions of the present invention, so as to make the technical means of the present invention more clearly understood, and thus can be implemented according to the content of the description. In order to make the above and other objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below.

Drawings

The advantages and benefits described herein, as well as other advantages and benefits, will be apparent to those of ordinary skill in the art upon reading the following detailed description of the exemplary embodiments. The drawings are only for purposes of illustrating exemplary embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like elements throughout. In the drawings:

fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;

fig. 2 is a partial enlarged view of the antenna structure shown in fig. 1 in the dashed area a;

fig. 3a is a partial enlarged view of the antenna structure shown in fig. 2 in a dashed area B, and fig. 3B is a partial enlarged view of the antenna structure shown in fig. 2 in a dashed area C;

fig. 4a is a top view of the antenna structure of fig. 2, and fig. 4b is a cross-sectional view taken along the direction of section D-D in fig. 4 a;

fig. 5 is a return loss plot for the antenna structure shown in fig. 1.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the present invention, it is to be understood that terms such as "including" or "having" are intended to indicate the presence of the disclosed features, numbers, steps, actions, components, parts, or combinations thereof, and are not intended to preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

It should be further noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 shows a schematic structural diagram of an antenna structure 100 in this embodiment, which may be an internal structure of a metal back shell of a notebook computer or a smart phone, for example, and includes one or more antenna structures 100 provided in this disclosure, it is to be understood that this disclosure does not specifically limit an application scenario of the antenna structure 100, and this embodiment is described only by taking this reference view as an example, so as to facilitate understanding.

As shown in fig. 1, an antenna structure 100 according to an embodiment of the present invention includes: metal dorsal scale 2 and around the metal frame that this metal dorsal scale set up, the metal frame can include first metal frame 11, second metal frame 12 and third metal frame 13, and the antenna wiring in this application sets up on first metal frame 11, can understand, can set up the metal frame of isostructure according to the structure of metal dorsal scale, and the antenna structure that this embodiment shows also can set up on other frames, and this application does not limit to this.

To describe the antenna structure in this embodiment in more detail, fig. 2 is a partially enlarged view of a broken line region a in fig. 1; FIG. 3a is a partial enlarged view of the dashed area B in FIG. 2, and FIG. 3B is a partial enlarged view of the dashed area C in FIG. 2; fig. 4a is a top view of the partial antenna structure shown in the broken line area a shown in fig. 2, and fig. 4b is a cross-sectional view of the antenna structure as seen in the cross-sectional direction D-D in fig. 4 a. The antenna structure provided by the present embodiment is described in detail below with reference to fig. 1, fig. 2, fig. 3a, fig. 3b, fig. 4a, and fig. 4 b.

A first breakpoint 161 and a second breakpoint 162 are disposed on the first metal frame 11, and preferably, the widths of the first breakpoint 161 and the second breakpoint 162 are 1.5 mm. An elongated slit 18 communicating with the first break point 161 and the second break point 162 is provided between the first metal frame 11 and the metal back shell 2, and the width of the slit 18 is preferably 2 mm. Specifically, the gap 18 provided between the first metal frame 11 and the metal back shell 2 divides the metal back shell into two parts, one part is a clearance area formed at the gap 18 and used for accommodating an antenna trace, and the other part is a grounding part.

A portion of the first metal frame 11 between the first break point 161 and the second break point 162 is formed as a radiator 10, and a feeding portion 14 is disposed on the radiator 10; in the radiator 10, a portion between the feeding portion 14 and the first break point 161 is formed as a first radiation portion 101 for exciting a first resonance; in the radiator 10, a portion between the feeding portion 14 and the second break point 162 is formed as the second radiation portion 102 for exciting the second resonance. Specifically, the arm length of the first radiation section 101 is longer than that of the second radiation section, for example, the length of the feeding section 14 to the second break point 162 may be 36mm, and the length of the feeding section 14 to the first break point 161 may be 54 mm.

When the antenna works, the feeding portion 14 feeds power to the first radiation portion 101, so that a first resonance generating a low frequency is excited, wherein the first resonance is a low frequency resonance with a frequency range of 617MHz to 960MHz, and meanwhile, the feeding portion 14 feeds power to the second radiation portion 102, so that a second resonance generating a medium and high frequency is excited, in this embodiment, the second resonance is a medium and high frequency resonance with a frequency range of 1710MHz to 2690 MHz; meanwhile, the harmonic waves of the first resonance and the second resonance generate frequency doubling effect to excite high-frequency resonance with the frequency range of 3400MHz-5000 MHz.

The first parasitic trace 111 extends from the first radiating portion 101, and is grounded after being bent in a three-dimensional manner, so as to adjust the first resonance.

Referring to fig. 3b, the first parasitic trace 111 may specifically extend from a side of the first radiation portion 101 away from the metal back shell 2, and is connected to the metal back shell 2 after being bent for multiple times, and in practical application, the first resonance may be frequency-modulated by adjusting a connection position of the first parasitic trace 111 and the first radiation portion 101. In an embodiment, the first parasitic trace 111 is grounded through the tunable element 151, wherein the tunable element 151 is composed of a switch and/or a variable capacitor, thereby tuning the performance of the low frequency signal. In an embodiment, a first radiation gap 171 is formed between the first parasitic trace 111 and the first radiation portion 101, wherein the first radiation gap 171 and the second radiation gap 172 are commonly used for exciting a third resonance, which is an uhf resonance with a frequency range of 3400MHz-5000 MHz. Specifically, the length of the first radiating gap 171 is preferably 15-20mm, and the width thereof is preferably 1-2mm, it can be understood that the horizontal distance between the first parasitic trace 111 and the first radiating portion 101, that is, the width of the first radiating gap 171 may affect the resonance of the antenna at the ultrahigh frequency, if the horizontal distance is too close, the coupling may be too strong, and thus the working performance of the ultrahigh frequency band may be affected, and the length of the first radiating gap 171 may affect the frequency range of the third resonance.

A second parasitic trace 112 extending from the second radiating portion 102 and being grounded after being bent is used for adjusting the second resonance.

Referring to fig. 3a, the second parasitic trace 112 may specifically extend from a side of the second radiation portion 102 away from the metal back shell 2, and is connected to the metal back shell 2 after being bent for multiple times, and in practical application, the second resonance may be frequency-modulated by adjusting a connection position of the second parasitic trace 112 and the second radiation portion 102. In an embodiment, the second parasitic trace 112 is grounded through the matching element 152, wherein the matching element 152 is composed of a capacitor and/or an inductor, and is used for adjusting the input impedance of the second radiating portion 102 to adjust the matching degree between the output impedance and the input impedance, and the specific value of the inductor or the capacitor needs to be obtained after being optimized with respect to the smith chart of the antenna. In an embodiment, a second radiation gap 172 is formed between the second parasitic trace 112 and the second radiation portion 102, wherein the first radiation gap 171 and the second radiation gap 172 are used together to excite a third resonance, which is an ultra-high frequency resonance with a frequency range of 3400MHz-5000 MHz. Specifically, the length of the second radiation gap 172 is preferably 17 to 25mm, and the width is preferably 1 to 2 mm. It can be understood that the horizontal distance between the second parasitic trace 112 and the second radiation portion 102, that is, the width of the second radiation gap 172 affects the ultra-high frequency resonance of the antenna frequency, if the horizontal distance is too close, the coupling is too strong, and the working performance of the ultra-high frequency band is affected, and the length of the second radiation gap 172 affects the frequency range of the third resonance.

In an embodiment, a first extension portion 121 bent in a plane is extended from an end of the first radiation portion 101 close to the first break 161, specifically, the first extension portion 121 may be extended from a side of the first radiation portion 101 away from the metal back shell 2, and is perpendicular to the first radiation portion 101 to form an L-shaped antenna, so as to widen a bandwidth of the first resonance; a second extension portion 122 bent in a plane is extended from the end of the second radiation portion 102 close to the second break point 162, specifically, the second extension portion 122 may be extended from a side of the second radiation portion 102 far from the metal back shell 2, and is perpendicular to the second radiation portion 102 to form an L-shaped antenna, so as to widen the bandwidth of the second resonance. In practical applications, the lengths of the first extension portion 113 and the second extension portion 114 can be changed, so that the frequency band of the antenna can be shifted, and the antenna can be more easily debugged.

In an embodiment, a third radiation gap 173 for exciting a fourth resonance is formed between the first extension part 121 and the first radiation part 101, wherein the width of the third radiation gap 173 is preferably 2-3mm, and the frequency range of the fourth resonance is 2176MHz to 2690 MHz.

In an embodiment, on the first metal frame 11, a first slot 191 is opened from the first break point 161 toward the side far from the radiator 10, and a second slot 192 is opened from the second break point 162 toward the side far from the radiator 10, and since the length of the slot is related to the frequency band in which the resonance is generated, the first slot 191 and the second slot 192 are respectively used for generating a coupling resonance to tune the frequency band associated with the respective slot length.

In an embodiment, the first break point 161, the second break point 162, the first slot 191, the second slot 192 and the slot 18 are filled with an insulating material, and the first parasitic trace 111, the second parasitic trace 112, the first extension 121 and the second extension 122 are fixed to the metal back shell through an insulator bracket. Specifically, the type and the design height of the insulator support can be flexibly set according to the practical application condition. Preferably, the design height of the insulator bracket may be a distance between the first extension 113, the second extension 114, and the metal back case. Preferably, the antenna traces of the first extension 121, the second extension 122, the first parasitic trace 111 and the second parasitic trace 112 may be printed on the insulator bracket by a printing method. It can be understood that the arrangement of the antenna trace through the insulator bracket is beneficial to improving the working accuracy of the antenna trace. Preferably, the material of the insulating material and the insulator support is preferably plastic.

In this embodiment, please refer to fig. 5, which is a schematic return loss diagram of the antenna structure 100 according to this embodiment. As can be seen from the return loss curve in fig. 5, the effective bandwidth of the antenna structure 100 of this embodiment can cover 617MHz to 960MHz, 1710MHz to 2690MHz, and 3400MHz to 5000MHz, and the return loss is less than-3 dB in the effective bandwidth range. The antenna structure has good radiation efficiency characteristics.

The utility model provides an antenna structure not only can cover the 2G 3G 4G frequency channel commonly used, but also has covered frequency channels such as LTE Band 71/Band 42/Band 43 to can cover most frequency channels of LTE, realize covering at 617MHz-960MHz, 1710MHz-2690MHz, a plurality of frequency channels of 3400MHz-5000 MHz. Compared with the prior art, the utility model discloses simple structure easily realizes, has not only realized the full frequency channel of LTE and the full frequency channel's of Sub _6GHz cover, and the metal that remains notebook or panel computer that can also be fine is felt.

On the basis of the above embodiment, the embodiment of the utility model provides a communication equipment is still provided, specifically including equipment main part and at least one antenna structure as above, antenna structure at least part set up in the equipment main part.

The communication equipment can be various communicable intelligent equipment such as a smart phone, a notebook computer, a tablet computer and wearable mobile intelligent equipment. The present embodiment does not limit this.

While the spirit and principles of the invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (9)

1. An antenna structure (100) comprising a metal back shell (2) and a metal rim arranged around the metal back shell (2),

a first breakpoint (161) and a second breakpoint (162) are arranged on the metal frame, and a gap (18) communicated with the first breakpoint (161) and the second breakpoint (162) is arranged between the metal frame and the metal back shell (2); the part of the metal frame, which is positioned between the first break point (161) and the second break point (162), is formed into a radiator (10), and a feed part (14) is arranged on the radiator (10);

a part of the radiator (10) between the feeding portion (14) and the first break point (161) is formed into a first radiation portion (101) for exciting a first resonance, a first parasitic trace (111) which is connected to the ground after being bent in a three-dimensional manner extends from the first radiation portion (101), and the first parasitic trace (111) is used for adjusting the first resonance;

a portion of the radiator (10) between the feeding portion (14) and the second break point (162) is formed as a second radiation portion (102) for exciting a second resonance; a second parasitic wire (112) which is grounded after being bent in a three-dimensional manner extends from the second radiation part (102), and the second parasitic wire (112) is used for adjusting the second resonance.

2. The antenna structure (100) according to claim 1,

the first parasitic trace (111) is grounded through a tunable element (151), wherein the tunable element (151) is composed of a switch and/or a variable capacitance;

the second parasitic trace (112) is grounded through a matching element (152), wherein the matching element (152) is comprised of a capacitance and/or an inductance.

3. The antenna structure (100) according to claim 1,

forming a first radiating gap (171) between the first parasitic trace (111) and the first radiating portion (101);

forming a second radiating gap (172) between the second parasitic trace (112) and the second radiating portion (102);

wherein the first radiation gap (171) and the second radiation gap (172) are used for exciting a third resonance.

4. The antenna structure (100) according to claim 1,

a first L-shaped extension part (121) bent in a plane is extended from the end of the first radiation part (101) close to the first break point (161) and is used for widening the bandwidth of the first resonance;

and an L-shaped second extension part (122) bent in a plane is arranged at the end, close to the second break point (162), of the second radiation part (102) in an extending manner and is used for widening the bandwidth of the second resonance.

5. The antenna structure (100) according to claim 4, wherein a third radiation gap (173) for exciting a fourth resonance is formed between the first extension portion (121) and the first radiation portion (101), wherein the frequency range of the fourth resonance is 2176MHz 2690 MHz.

6. The antenna structure (100) according to claim 1,

on the metal frame, a first open slot (191) is formed from the first break point (161) towards one side far away from the radiator (10), and a second open slot (192) is formed from the second break point (162) towards one side far away from the radiator (10);

wherein the first slot (191) and the second slot (192) are used to generate a coupling resonance to tune a frequency band associated with a slot length.

7. The antenna structure (100) according to claim 3,

the frequency range of the first resonance is 617MHz-960MHz, the frequency range of the second resonance is 1710MHz-2690MHz, and the frequency range of the third resonance is 3400MHz-5000 MHz.

8. The antenna structure (100) according to claim 1, wherein the first break point (161), the second break point (162) and the slot (18) are filled with an insulating material, and the first parasitic trace (111) and the second parasitic trace (112) are fixed to the metal back shell (2) by an insulator bracket.

9. A communication device comprising a device body and at least one antenna structure according to any of claims 1-8, the antenna structure being at least partially disposed within the device body.

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