Antenna and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, in particular to an antenna and communication equipment, the antenna comprises a dielectric layer, a radiation layer and a grounding layer, and the dielectric layer is provided with a first surface and a second surface which are opposite to each other; the radiation layer is arranged on the first surface, the radiation layer comprises a feeder line and a radiator which are connected, and a first gap is formed in the joint of the feeder line and the radiator; the grounding layer is arranged on the second surface. According to the embodiment of the utility model, the first gap is arranged at the joint of the feeder line and the radiator, so that the out-of-band high selectivity of the antenna can be improved, and spectrum resources can be utilized efficiently.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to antenna technical field, especially a kind of antenna and communication equipment. BACKGROUND

[0002] The plane super bandwidth antenna has the advantages of high transmission rate, low cost, light weight, simple design, low profile, easy integration with other components, etc., and has received extensive attention and in-depth research from scholars and engineers in the industry.

[0003] However, the current plane super bandwidth antenna often does not have high selectivity outside the band, has the defect of not being able to efficiently use spectrum resources, greatly limiting its use on modern wireless communication terminals. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model embodiment provides an antenna and communication equipment, which overcomes the above problems or at least partially solves the above problems.

[0005] According to an aspect of the utility model embodiment, an antenna is provided, comprising a dielectric layer, a radiation layer and a ground layer, the dielectric layer is provided with opposite first and second surfaces; the radiation layer is arranged on the first surface, the radiation layer comprises a connected feed line and a radiator, a first slit is formed at the connection of the feed line and the radiator; the ground layer is arranged on the second surface.

[0006] In some embodiments, the first slit extends from the feed line to the radiator.

[0007] In some embodiments, the first slit includes a first sub-slit and a second sub-slit, the first sub-slit and the second sub-slit are arranged at the connection of the feed line and the radiator, the first sub-slit is parallel to the second sub-slit.

[0008] In some embodiments, in the direction of the feed line to the radiator, the feed line has a first axis of symmetry; the first sub-slit and the second sub-slit are symmetrically arranged about the first axis of symmetry.

[0009] In some embodiments, the shape of the first slit is I-shaped.

[0010] In some embodiments, the shape of the radiator is trapezoidal, the radiator includes mutually parallel long sides and short sides, the length of the long side is greater than the length of the short side, and the feed line is connected to the short side of the radiator.

[0011] In some embodiments, the radiator is provided with a second slit, and the shape of the second slit is square.

[0012] In some embodiments, the feed line has a first axis of symmetry in a direction of the feed line towards the radiator; the radiator is symmetrically arranged about the first axis of symmetry.

[0013] In some embodiments, the ground layer is concave in shape; a projection of the feed line overlaps at least part of the ground layer in a direction of the radiating layer towards the ground layer.

[0014] According to an aspect of an embodiment of the present application, a communication device is provided, comprising the antenna as described above.

[0015] The antenna provided by the embodiment of the present application has the advantages that, different from the prior art, the antenna comprises a dielectric layer, a radiating layer and a ground layer, the dielectric layer is provided with opposite first and second surfaces; the radiating layer is arranged on the first surface, the radiating layer comprises a feed line and a radiator connected with each other, a first gap is arranged at a connection position of the feed line and the radiator; and the ground layer is arranged on the second surface. The radiator and the ground layer are beneficial to improving the radiation performance and bandwidth of the antenna. The first gap arranged at the connection position of the feed line and the radiator is beneficial to improving the out-of-band high selectivity of the antenna, and thus is beneficial to efficiently utilizing the frequency spectrum resource. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the drawings needed to be used in the embodiment of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by the drawings according to the drawings without creative labor for those skilled in the art.

[0017] Figure 1 is a perspective view of the antenna provided by the embodiment of the present application;

[0018] Figure 2 is a front view of the antenna provided by the embodiment of the present application;

[0019] Figure 3 is a rear view of the antenna provided by the embodiment of the present application;

[0020] Figure 4 is a standing wave ratio simulation result diagram of the antenna provided by the embodiment of the present application after parameter optimization;

[0021] Figure 5 is a maximum gain and radiation efficiency simulation result diagram of the antenna provided by the embodiment of the present application after parameter optimization;

[0022] Figure 6is the radiation pattern of the antenna after parameter optimization at 10.0 GHz provided by the embodiment of the utility model;

[0023] Figure 7 is the radiation pattern of the antenna after parameter optimization at 20.0 GHz provided by the embodiment of the utility model;

[0024] Figure 8 is the radiation pattern of the antenna after parameter optimization at 30.0 GHz provided by the embodiment of the utility model.

[0025] The specific embodiment is as follows:

[0026] 100, antenna;10, dielectric layer;11, first surface;12, second surface;13, first edge;20, radiation layer;21, feed line;22, radiator;22a, first slit;22b, first sub-slit;22c, second sub-slit;22d, second slit;221, short side;222, long side;30, ground layer;31, first patch;32, second patch;33, third patch;X, first direction;Y, second direction;Z, third direction. Specific embodiment

[0027] In order to facilitate understanding of the utility model, the utility model is described in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or one or more intervening elements can be present therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the specification are only for the purpose of illustration.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification are the same as the meanings commonly understood by those skilled in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not used to limit the utility model. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0029] The planar ultra-wideband antenna has the advantages of high transmission rate, low cost, light weight, simple design, low profile, easy integration with other components, etc. It has received extensive attention and in-depth research from scholars and engineers in the industry.

[0030] The current planar ultra-wideband antenna often does not have high selectivity out of band, has the defect of inefficient use of spectrum resources, and greatly limits its use in modern wireless communication terminals.

[0031] The utility model discloses an embodiment through the first slit that is set up in the connecting place of the feed line and the radiator, is favorable for improving the high selectivity out of band of the antenna, and then is favorable for efficient use of spectrum resources.

[0032] In order to facilitate the reader to understand the inventive concept of the utility model, the specific structure of the antenna is described as follows:

[0033] Please refer to Figures 1-3 , the antenna 100 includes a dielectric layer 10, a radiation layer 20 and a ground layer 30, the dielectric layer 10 is provided with opposite first surface 11 and second surface 12.Radiation layer 20 is arranged on the first surface 11, and the radiation layer 20 includes a feed line 21 and a radiator 22 connected, the feed line 21 and the radiator 22 are arranged on the first surface 11, and the connecting place of the feed line 21 and the radiator 22 is provided with a first slit 22a.The ground layer 30 is arranged on the second surface 12.The radiator 22 and the ground layer 30 are beneficial to improve the radiation performance and bandwidth of the antenna 100.The application is provided with the first slit 22a in the connecting place of the feed line 21 and the radiator 22, which is beneficial to improve the high selectivity out of band of the antenna 100, and then is beneficial to efficient use of spectrum resources.

[0034] In some embodiments, the feed line 21 is a microstrip feed line 21, and the material of the feed line 21 can be copper-plated, which is beneficial to simplify the structure of the antenna 100.In some embodiments, the characteristic impedance of the feed line 21 is 50 ohms.

[0035] In some embodiments, the first slit 22a extends from the feed line 21 to the radiator 22 in the direction of the feed line 21 to the radiator 22 (first direction X), which is beneficial to improve the high selectivity out of band of the antenna 100.

[0036] In some embodiments, the first slit 22a includes a first sub-slit 22b and a second sub-slit 22c, and the first sub-slit 22b and the second sub-slit 22c are arranged at the connecting place of the feed line 21 and the radiator 22 along the third direction Z, and the first sub-slit 22b is parallel to the second sub-slit 22c, which is beneficial to improve the high selectivity out of band of the antenna 100, and the third direction Z is perpendicular to the first direction X.In some embodiments, the first sub-slit 22b extends from the feed line 21 to the radiator 22, and the second sub-slit 22c extends from the feed line 21 to the radiator 22 in the direction of the feed line 21 to the radiator 22.

[0037] In some embodiments, the feed line 21 has a first axis of symmetry in the direction of the feed line 21 to the radiator 22.The first sub-slit 22b and the second sub-slit 22c are symmetrically arranged about the first axis of symmetry.

[0038] In some embodiments, the first slit 22a has an I shape when viewed in a direction from the radiating layer 20 to the ground layer 30 (second direction Y), and the second direction Y, the first direction X and the third direction Z are perpendicular to each other two by two. In some embodiments, the first sub-slit 22b has an I shape and the second sub-slit 22c has an I shape when viewed in a direction from the radiating layer 20 to the ground layer 30. The first sub-slit 22b and the second sub-slit 22c are parallel to the first axis of symmetry of the feed line 21.

[0039] In some embodiments, the radiator 22 has a trapezoidal shape when viewed in a direction from the radiating layer 20 to the ground layer 30. The radiator 22 includes long sides 222 and short sides 221 parallel to each other, the long sides 222 have a length greater than the length of the short sides 221, and the feed line 21 is connected to the short sides 221 of the radiator 22.

[0040] In some embodiments, the long sides 222 of the radiator 22 are provided with second slits 22d, and the second slits 22d have a square shape when viewed in a direction from the radiating layer 20 to the ground layer 30.

[0041] In some embodiments, the feed line 21 has a first axis of symmetry in a direction from the feed line 21 to the radiator 22. The radiating layer 20 is symmetrically arranged about the first axis of symmetry of the feed line 21. In some embodiments, the radiator 22 is symmetrically arranged about the first axis of symmetry.

[0042] In some embodiments, the material of the radiator 22 can be copper-plated.

[0043] In some embodiments, the ground layer 30 has a concave shape when viewed in a direction from the radiating layer 20 to the ground layer 30. In a direction from the radiating layer 20 to the ground layer 30, the projection of the feed line 21 overlaps at least part of the ground layer 30. In some embodiments, the ground layer 30 includes a first patch 31, a second patch 32 and a third patch 33 arranged on the second surface 12. The second patch 32 and the third patch 33 are respectively connected to opposite sides of the first patch 31 in the third direction Z, and the third direction Z, the second direction Y and the first direction X are perpendicular to each other two by two. The first patch 31, the second patch 32 and the third patch 33 each have a rectangular shape when viewed in a direction from the radiating layer 20 to the ground layer 30, and the first patch 31, the second patch 32 and the third patch 33 together form a concave shape. The first patch 31, the second patch 32 and the third patch 33 can be metal patches. The material of the first patch 31, the second patch 32 and the third patch 33 can be copper-plated.

[0044] In some embodiments, the ground layer 30 is symmetrically arranged about the first symmetry axis. In some embodiments, the first patch 31 is symmetrically arranged about the first symmetry axis, and the second patch 32 and the third patch 33 are symmetrically arranged about the first symmetry axis.

[0045] In some embodiments, the dielectric layer 10 is provided with a first edge 13, and the feed line 21 is closer to the first edge 13 than the radiator 22 in the direction from the feed line 21 to the radiator 22, and the first patch 31, the second patch 32 and the third patch 33 are all close to the first edge 13. In some embodiments, the dielectric layer 10 is symmetrically arranged about the first symmetry axis.

[0046] It should be noted that the radiation performance and bandwidth of the antenna 100 are mainly determined by the size parameters of the radiator 22 and the ground layer 30, and the high selectivity of the upper passband edge is determined by the positions and sizes of the mutually parallel I-shaped first sub-slots 22b and second sub-slots 22c.

[0047] To more thoroughly illustrate the structure proposed in the present application, a design example is also given here. In the design example, the dielectric constant of the dielectric layer 10 is 3.38, the dielectric loss is 0.0022, and the thickness is 0.4 mm; the radiator layer 20 and the ground layer 30 are copper-plated and have a thickness of 0.035 mm. The front and back of the layout of the design example are shown in Figs. 3 and 4, respectively. Figure 2 and Figure 3 As shown in Figs. 3 and 4, L A is the length of the dielectric layer 10, W A is the width of the dielectric layer 10, L M is the length of the middle rectangular metal patch (the first patch 31) constituting the radio frequency ground (the ground layer 30), L UD is the length of the left and right two rectangular metal patches (the second patch 32 and the third patch 33) constituting the radio frequency ground, W M is the width of the middle rectangular metal patch (the first patch 31) constituting the radio frequency ground, L L is the length of the long side 222 of the trapezoidal radiation patch (the radiator 22), L H is the length of the short side 221 of the trapezoidal radiation patch (the radiator 22), H is the height of the inverted trapezoidal radiation patch (the radiator 22), L R is the side length of the square slot (the second slot 22d), D1 is the distance of the I-shaped slots (the first sub-slot 22b and the second sub-slot 22c) from the first edge 13 of the dielectric layer 10, D2 is the distance between the mutually parallel I-shaped slots (the first sub-slot 22b and the second sub-slot 22c), W I is the width of the I-shaped slots (the first sub-slot 22b and the second sub-slot 22c), L I is the length of the I-shaped slots (the first sub-slot 22b and the second sub-slot 22c), L FL is the length of the 50-ohm microstrip line (feed line 21) F W is the width of the 50-ohm microstrip line (feed line 21).

[0048] The high selectivity of the upper passband edge is achieved by introducing transmission zeros corresponding to the parallel I-shaped slots (first sub-slot 22b and second sub-slot 22c) whose size parameters are related to the frequency as

[0049]

[0050] where ε is the dielectric constant of the medium, and c is the speed of light in a vacuum. r

[0051] To better illustrate the design structure proposed in the present application, a design example is given, and the optimized parameters of the design example are as follows: L A = 10.4 mm, W A = 10.4 mm, L M = 3.3 mm, L UD = 4.3 mm, W M = 6.8 mm, L L = 6.8 mm, L H = 4.8 mm, H = 6.3 mm, L R = 2.0 mm, D1 = 2.0 mm, D2 = 0.44 mm, L I = 2.87 mm, W I = 0.1 mm, L F = 3.6 mm, W F = 0.84 mm. The VSWR of the ultra-wideband antenna 100 after parameter optimization is shown in FIG. 2B. As can be seen from FIG. 2B, the impedance bandwidth range with a VSWR less than 2 is 9.59 to 31.65 GHz, the center frequency is 20.62 GHz, the absolute bandwidth is 22.06 GHz, the relative bandwidth is 107%, and the characteristics of ultra-wideband are exhibited. Figure 4 Figure 4 It can be seen that the impedance bandwidth range with a VSWR less than 2 is 9.59 to 31.65 GHz, the center frequency is 20.62 GHz, the absolute bandwidth is 22.06 GHz, the relative bandwidth is 107%, and the characteristics of ultra-wideband are exhibited.

[0052] Figure 5 FIG. 2C shows the simulation results of the maximum gain and radiation efficiency of the antenna 100 after the above parameter optimization. As can be seen from FIG. 2C, in the passband, there are four transmission poles located at 12.61 GHz, 17.39 GHz, 23.99 GHz, and 29.42 GHz, respectively, which ensures the flatness of the maximum gain and radiation efficiency in the passband; there is also a transmission zero point near the upper passband edge, which is located at 36 GHz, which can improve the selectivity of the antenna 100 and thus improve the utilization rate of spectrum resources. Figure 5 ​​It can be seen that, in the passband, the average maximum gain is 3.83dBi, showing the advantage of high maximum gain; in the passband, the average radiation efficiency is 96.85%, showing the advantage of high radiation efficiency; at 6GHz, the maximum gain is only-4.97dBi, and the radiation efficiency is 19.12%, compared with the maximum gain of 1.69dBi at 9.59GHz and the radiation efficiency of 93.15%, it can be seen that it has high selectivity at the lower passband edge; at 36GHz, the maximum gain is only-4.22dBi, and the radiation efficiency is 24.27%, compared with the maximum gain of 4.02dBi at 37GHz and the radiation efficiency of 93.68%, it can be seen that it has high selectivity at the upper passband edge. From the above analysis, it can be seen that the antenna 100 not only has high gain and high radiation efficiency in the passband, but also has high selectivity at the upper and lower passband edges.

[0053] Figures 6-8 For the radiation pattern of the antenna 100 at 10.0GHz, 20GHz and 30GHz after the above parameter optimization, Figures 6-8 It can be seen that the antenna 100 is an omnidirectional antenna 100.

[0054] In the embodiment of the utility model, the antenna 100 includes dielectric layer 10, radiation layer 20 and ground layer 30, radiation layer 20 includes the feed line 21 and radiator 22 that are connected, by setting first gap 22a at the connecting place of feed line 21 and radiator 22, it is favorable to promote the high selectivity of antenna 100 out of band, and then it is favorable to efficient use of spectrum resources.

[0055] The utility model further provides a kind of communication equipment embodiment, the communication equipment includes above-mentioned antenna 100, for the function and structure of antenna 100, refer to above-mentioned embodiment, here no longer one by one elaboration.

[0056] It should be noted that the specification and drawings of the utility model provide a preferred embodiment of the utility model, however, the utility model can be realized by many different forms, and is not limited to the embodiments described in the specification, these embodiments are not as additional limitation to the content of the utility model, and the purpose of providing these embodiments is to make the understanding of the disclosed content of the utility model more thorough and comprehensive. And, the above technical features continue to combine, form various embodiments not listed above, which are regarded as the range of the specification of the utility model; further, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes should belong to the protection scope of the attached claims of the utility model.

Claims

1. An antenna, characterized in that, include: A dielectric layer having opposing first and second surfaces; A radiating layer is disposed on the first surface. The radiating layer includes a connected feed line and a radiator, and a first gap is provided at the connection between the feed line and the radiator. A grounding layer is disposed on the second surface.

2. The antenna according to claim 1, characterized in that, The first gap extends from the feed line to the radiator.

3. The antenna according to claim 1, characterized in that, The first gap includes a first sub-gap and a second sub-gap, which are spaced apart at the connection between the feed line and the radiator, with the first sub-gap being parallel to the second sub-gap.

4. The antenna according to claim 3, characterized in that, In the direction from the feed line to the radiator, the feed line has a first axis of symmetry; The first sub-slit and the second sub-slit are symmetrically arranged about the first axis of symmetry.

5. The antenna according to claim 1, characterized in that, The first gap is I-shaped.

6. The antenna according to claim 1, characterized in that, The radiator is trapezoidal in shape and includes a long side and a short side that are parallel to each other. The length of the long side is greater than the length of the short side, and the feed line is connected to the short side of the radiator.

7. The antenna according to claim 1, characterized in that, The radiator has a second slit, which is square in shape.

8. The antenna according to claim 1, characterized in that, In the direction from the feed line to the radiator, the feed line has a first axis of symmetry; The radiator is symmetrically arranged about the first axis of symmetry.

9. The antenna according to any one of claims 1-8, characterized in that, The grounding layer has a concave shape; In the direction from the radiating layer to the grounding layer, the projection of the feed line overlaps at least partially with the grounding layer.

10. A communication device, characterized in that, Includes the antenna as described in any one of claims 1-9.

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