Antenna and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses an antenna and electronic equipment, the antenna comprises a first metal layer, the first metal layer comprises a radiation part, a feed line part and a first slot, the radiation part is connected with the feed line part, the first slot is partially located in the radiation part, and the other part of the first slot is located in the feed line part; a second metal layer; the first metal layer is arranged on the first surface of the dielectric layer, and the second metal layer is arranged on the second surface of the dielectric layer. Through the above mode, the embodiment of the utility model enables the broadband antenna to have the in-band notch, and the in-band interference of the broadband antenna is effectively suppressed.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of antennas, and particularly to an antenna and an electronic device. Background Art

[0002] Due to advantages such as high transmission rate, small size, and high signal transmission quality, broadband antennas are widely used in modern communication systems and have also attracted the attention of relevant experts, scholars, and engineers in this field.

[0003] In the process of implementing the present utility model, the inventors of the present utility model found that: currently, small-sized and high-performance broadband antennas on the market usually do not have in-band notches and cannot effectively suppress in-band interference, which greatly affects their use in modern small-sized wireless communication systems. Summary of the Utility Model

[0004] The main technical problem to be solved by the embodiments of the present utility model is to provide an antenna and an electronic device, which can enable the broadband antenna to have in-band notches and effectively suppress in-band interference.

[0005] To solve the above technical problem, a technical solution adopted by the present utility model is: to provide an antenna, including a first metal layer, a second metal layer, and a dielectric layer. The first metal layer includes a radiation portion, a feeder portion, and a first slit. The radiation portion is connected to the feeder portion. A part of the first slit is located in the radiation portion, and the other part of the first slit is located in the feeder portion. The first metal layer is disposed on a first surface of the dielectric layer, and the second metal layer is disposed on a second surface of the dielectric layer.

[0006] Optionally, the first slit is in a shape of a capital "J", the tail region of the capital "J" is located in the radiation portion, and the top region of the capital "J" is located in the feeder portion.

[0007] Optionally, the first slit includes a first horizontal slit, a first vertical slit, a second horizontal slit, a second vertical slit, and a third horizontal slit. The first horizontal slit, the first vertical slit, the second horizontal slit, the second vertical slit, and the third horizontal slit are connected in sequence. Among them, the first horizontal slit, the second horizontal slit, and the third horizontal slit are parallel to each other, and the first horizontal slit, the second horizontal slit, and the third horizontal slit are perpendicular to the first vertical slit and the second vertical slit.

[0008] Optionally, the second metal layer is provided with a second slit, and the second slit is in an "L" shape.

[0009] Optionally, the second slit includes a third vertical slit and a fourth horizontal slit that are connected, and the fourth horizontal slit is parallel to the feeder portion.

[0010] Optionally, the projection of the radiation part on the dielectric layer is trapezoidal.

[0011] Optionally, the feeder part is connected to the long bottom side of the trapezoid of the radiation part.

[0012] Optionally, the feeder part is a microstrip feeder with a resistance of 50 ohms.

[0013] Optionally, the feeder part is located at the center of the intersection of the first surface of the dielectric layer and the side of the dielectric layer.

[0014] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide an electronic device including the above antenna.

[0015] The beneficial effects of the embodiments of the present utility model are: different from the prior art, the embodiments of the present utility model provide an antenna including a first metal layer, including a radiation part, a feeder part and a first slot, the radiation part and the feeder part are connected, a part of the first slot is located in the radiation part, and another part of the first slot is located in the feeder part; a second metal layer; a dielectric layer, the first metal layer is disposed on the first surface of the dielectric layer, and the second metal layer is disposed on the second surface of the dielectric layer. In the above manner, the embodiments of the present utility model solve the problem that the existing broadband antenna does not include in-band notch and cannot effectively suppress in-band interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

[0017] Figure 1 is an exploded structural schematic diagram of an antenna provided by an embodiment of the present utility model;

[0018] Figure 2 is an assembled structural schematic diagram of an antenna provided by an embodiment of the present utility model;

[0019] Figure 3 is a top view structural schematic diagram of a first metal layer provided by an embodiment of the present utility model;

[0020] Figure 4 is a bottom view structural schematic diagram of a second metal layer provided by an embodiment of the present utility model;

[0021] Figure 5It is a side view schematic diagram of a broadband antenna provided by an embodiment of the present utility model;

[0022] Figure 6 It is a top view schematic diagram of a broadband antenna provided by an embodiment of the present utility model;

[0023] Figure 7 It is a bottom view schematic diagram of a broadband antenna provided by an embodiment of the present utility model;

[0024] Figure 8 It is a top view marked schematic diagram of a broadband antenna provided by an embodiment of the present utility model;

[0025] Figure 9 It is a bottom view marked schematic diagram of a broadband antenna provided by an embodiment of the present utility model;

[0026] Figure 10 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the L S1 parameter;

[0027] Figure 11 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the L S2 parameter;

[0028] Figure 12 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the L S3 parameter;

[0029] Figure 13 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the L S4 parameter;

[0030] Figure 14 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the W S2 parameter;

[0031] Figure 15 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the W S3 parameter;

[0032] Figure 16 It is a simulation result diagram of the reflection coefficient of a broadband antenna provided by an embodiment of the present utility model when changing the D 1 parameter;

[0033] Figure 17 It is a simulation result diagram of the reflection coefficient of a broadband antenna with optimized parameters provided by an embodiment of the present utility model;

[0034] Figure 18 It is a simulation result diagram of the gain and radiation efficiency of the preferred parameters of a broadband antenna provided by an embodiment of the present utility model;

[0035] Figure 19 It is a simulation radiation pattern of a broadband antenna provided by an embodiment of the present utility model at 4.35 GHz;

[0036] Figure 20 It is a simulation radiation pattern of a broadband antenna provided by an embodiment of the present utility model at 6.35 GHz;

[0037] Figure 21 It is a simulation radiation pattern of a broadband antenna provided by an embodiment of the present utility model at 8.35 GHz. Detailed implementation manners

[0038] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in this specification in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0040] Please refer to Figures 1 to 4 , the antenna 1000 includes a first metal layer 1, a second metal layer 2 and a dielectric layer 3, wherein the first metal layer 1, the dielectric layer 3 and the second metal layer 2 are stacked in sequence.

[0041] For the above-mentioned first metal layer 1, please refer to Figure 3 , the first metal layer 1 includes a radiation portion 11, a feeder portion 12 and a first slit 13, the radiation portion 11 is connected to the feeder portion 12, a part of the first slit 13 is located in the radiation portion 11, and another part of the first slit 13 is located in the feeder portion 12;

[0042] Specifically, the first slot 13 is in a shape of a capital "J", the tail region of the capital "J" is located in the radiation part 11, and the top region of the capital "J" is located in the feeder part 12. Its function is to introduce a separately controllable notch. Among them, the first slot 13 includes a first horizontal slot 131, a first vertical slot 132, a second horizontal slot 133, a second vertical slot 134, and a third horizontal slot 135. The first horizontal slot 131, the first vertical slot 132, the second horizontal slot 133, the second vertical slot 134, and the third horizontal slot 135 are connected in sequence. Among them, the first horizontal slot 131, the second horizontal slot 133, and the third horizontal slot 135 are all parallel, and the first horizontal slot 131, the second horizontal slot 133, and the third horizontal slot 135 are all perpendicular to the first vertical slot 132 and the second vertical slot 134.

[0043] In some embodiments, the projection of the radiation part 11 on the dielectric layer 3 is trapezoidal, and the feeder part 12 is connected to the long bottom side of the trapezoidal radiation part 11.

[0044] In some embodiments, the feeder part 12 is a microstrip feeder. Preferably, the resistance value of the microstrip feeder is 50 ohms.

[0045] It can be understood that in some embodiments, the first metal layer 1 can be called a radiation layer according to its function. Correspondingly, the radiation part 11 can be called a trapezoidal radiation patch.

[0046] For the above-mentioned second metal layer 2, please refer to Figure 4 , the second metal layer 2 is provided with a second slot 21. The second slot 21 is in an "L" shape. The first function is to increase the bandwidth and optimize the matching, and the second function is to convert the directional antenna 1000 into an omnidirectional antenna 1000. Specifically, the second slot 21 includes a third vertical slot 211 and a fourth horizontal slot 212 that are connected. The fourth horizontal slot 212 is parallel to the feeder part 12.

[0047] For the above-mentioned dielectric layer 3, please refer to Figure 1 , the first metal layer 1 is disposed on the first surface 31 of the dielectric layer 3, and the second metal layer 2 is disposed on the second surface 32 of the dielectric layer 3.

[0048] It can be understood that in some embodiments, the second metal layer 2 is also called a defected ground plane according to its function.

[0049] In some embodiments, the feeder part 12 is located at the center of the intersection of the first surface 31 of the dielectric layer 3 and the side of the dielectric layer 3.

[0050] In an embodiment of the present utility model, the antenna 1000 includes a first metal layer 1, a second metal layer 2 and a dielectric layer 3. The first metal layer 1 includes a radiation portion 11, a feeder portion 12 and a first slit 13. The radiation portion 11 is connected to the feeder portion 12. A part of the first slit 13 is located in the radiation portion 11, and another part of the first slit 13 is located in the feeder portion 12. The first metal layer 1 is disposed on a first surface 31 of the dielectric layer 3, and the second metal layer 2 is disposed on a second surface 32 of the dielectric layer 3. In this way, the presence of the first slit 13 enables the antenna 1000 to introduce a separately controllable notch, thereby obtaining an omnidirectional antenna 1000 that can effectively suppress in-band interference and has a high bandwidth.

[0051] To facilitate readers' better understanding of the concept of the present utility model, the following embodiment of the broadband antenna 2000 is provided and a simulation experiment is conducted. Please refer to Figures 5 to 21 , specifically, the relative permittivity of the dielectric layer 3 is specified as 4.4, the dielectric loss is 0.02, and the thickness is 0.8 mm; both the first metal layer 1 and the second metal layer 2 are copper-plated, and their thicknesses are both 0.035 mm; the length of the broadband antenna 2000 is specified as 23 mm and the width is 22 mm. Among them, as Figure 8 and Figure 9 shown, L G is the length of the dielectric layer 3; W G is the width of the dielectric layer 3; L S1 is the length of the second horizontal slit 133 of the first slit 13, L S2 is the length of the first vertical slit 132 or the second vertical slit 134 of the first slit 13, L S3 is the length of the first horizontal slit 131 or the third horizontal slit 135 of the first slit 13, L S4 is the length of the fourth horizontal slit 212 that forms the second slit 21, L RD is the length of the long bottom side of the trapezoidal radiation patch, L RU is the length of the short bottom side of the trapezoidal radiation patch, h R is the height of the trapezoidal radiation patch; L F is the length of the 50-ohm feeder or the length of the third vertical slit 211 that forms the second slit 21; W S1 is the width of the first horizontal slit 131, the first vertical slit 132, the second horizontal slit 133, the second vertical slit 134 and the third horizontal slit 135 of the first slit 13; W S2 is the width of the third vertical slit 211 that forms the L-shaped slit; W S3 is the width of the fourth horizontal slit 212 that forms the second slit 21; W F is the width of the 50-ohm feeder; D 1is the distance of the first gap 13 from the lower edge of the dielectric layer 3; D 2 is the distance of the long side of the trapezoidal radiation patch from the right edge of the dielectric layer 3; D 3 is the distance of the short side of the trapezoidal radiation patch from the upper edge of the dielectric layer 3.

[0052] Corresponding to the above structure, the key parameters affecting the broadband antenna 2000 are: L S1 、L S2 、L S3 、L S4 、W S2 、W S3 、D 1 , therefore, simulation experiments are carried out on the above seven key parameters, so that the broadband antenna 2000 can obtain the desired performance. Specifically as follows:

[0053] Preferably, when L S1 is selected to be 0.83 mm, 0.93 mm, and 1.03 mm respectively, the simulation results of its reflection coefficient are as Figure 10 shown. As the parameter L S1 increases, its reflection coefficient improves within the passband, and the bandwidth slightly increases; the notch center frequency moves down, and the isolation at the notch center frequency improves.

[0054] Preferably, when L S2 is selected to be 5.9 mm, 6.4 mm, and 6.9 mm respectively, the simulation results of its reflection coefficient are as Figure 11 shown. As the parameter L S2 increases, its reflection coefficient deteriorates within the passband, and the bandwidth narrows; the notch center frequency moves down, and the isolation at the center frequency first deteriorates and then improves.

[0055] Preferably, when L S3 is selected to be 0.6 mm, 0.9 mm, and 1.2 mm respectively, the simulation results of its reflection coefficient are as Figure 12 shown. As the parameter L S3 increases, its reflection coefficient first deteriorates and then improves within the passband, and the bandwidth narrows; the notch center frequency moves down, and the isolation at the center frequency first improves and then deteriorates.

[0056] Preferably, when L S4 is selected to be 6.0 mm, 6.5 mm, and 7.0 mm respectively, the simulation results of its reflection coefficient are as Figure 13 shown. As the parameter L S4 increases, its reflection coefficient deteriorates within the passband, and the bandwidth narrows; the notch center frequency slightly moves up and the isolation deteriorates.

[0057] Preferably, when W S2When it is 3.6mm, 4.1mm, and 4.6mm, the simulation results of its reflection coefficient are as follows Figure 14 shown. As the parameter W S2 increases, its reflection coefficient improves within the passband and the bandwidth becomes wider; the notch center frequency remains unchanged, but the isolation at the notch center frequency deteriorates.

[0058] Preferably, when W is respectively selected as S3 5.9mm, 6.4mm, and 6.9mm, the simulation results of its reflection coefficient are as follows Figure 15 shown. As the parameter W S3 increases, its reflection coefficient improves within the passband and the bandwidth becomes larger; the notch center frequency slightly shifts downward, and the isolation at the notch center frequency improves.

[0059] Preferably, when D is respectively selected as 1 3.27mm, 4.27mm, and 5.27mm, the simulation results of the reflection coefficient are as follows Figure 16 shown. As the parameter D 1 increases, its reflection coefficient first improves and then deteriorates within the passband, and the bandwidth becomes wider; the notch center frequency slightly shifts upward, and the isolation at the notch center frequency deteriorates.

[0060] From the above analysis, when the parameters of the broadband antenna 2000 are respectively: L G = 23.0mm, W G = 22.0mm, L S1 = 1.03mm, L S2 = 6.4mm, L S3 = 0.6mm, L S4 = 7.0mm, L RD = 8.0mm, L RU = 6.1mm, L F = 8.0mm, W S1 = 0.13mm, W S2 = 4.6mm, W S3 = 6.9mm, W F = 1.53mm, h R = 7.0mm, D 1 = 4.27mm, D 2 = 9.0mm, D 3 = 8.0mm, the performance of each parameter of the broadband antenna 2000 is relatively excellent, and the simulation results of its reflection coefficient are as follows Figure 17 shown. From Figure 17It can be known that the bandwidth range of the broadband antenna 2000 with a reflection coefficient less than -10 dB is from 3.41 GHz to 8.77 GHz, the center frequency is 6.09 GHz, the absolute bandwidth is 5.36 GHz, and the relative bandwidth is 88%, showing the characteristics of broadband. Within the bandwidth range, there is a notch located at 6.36 GHz.

[0061] The simulation results of the gain and radiation efficiency of the broadband antenna 2000 are as Figure 18 described. It can be known from Figure 18 that the broadband antenna 2000 not only has high gain and high radiation efficiency in the passband, but also has an in-band suppression as high as 11.5 dB at the center frequency of the notch.

[0062] The simulated radiation patterns of the broadband antenna 2000 at 4.35 GHz, 6.35 GHz, and 8.35 GHz are respectively as Figure 19 , Figure 20 and Figure 21 shown. It can be known from Figure 19 , Figure 20 and Figure 21 that the broadband antenna 2000 is an omnidirectional antenna.

[0063] The present utility model also provides an embodiment of an electronic device. The electronic device includes the above-mentioned antenna 1000. For the structure and function of the antenna 1000, reference can be made to the above-mentioned embodiments, and details will not be repeated here.

[0064] It should be noted that the description and drawings of the present utility model give preferred embodiments of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not additional limitations to the content of the present utility model. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Moreover, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the description of the present utility model. Further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. An antenna, characterized in that: include, A first metal layer includes a radiation portion, a feeder portion and a first slot, wherein the radiation portion and the feeder portion are connected, a portion of the first slot is located in the radiation portion, and another portion of the first slot is located in the feeder portion; A second metal layer; The dielectric layer, the first metal layer is arranged on a first surface of the dielectric layer, and the second metal layer is arranged on a second surface of the dielectric layer.

2. The antenna according to claim 1, characterized in that The first slot is in the shape of an “X”, a tail area of ​​the “X” shape is located at the radiation part, and a top area of ​​the “X” shape is located at the feeder part.

3. The antenna according to claim 1, characterized in that The first gap includes a first horizontal gap, a first vertical gap, a second horizontal gap, a second vertical gap and a third horizontal gap, and the first horizontal gap, the first vertical gap, the second horizontal gap, the second vertical gap and the third horizontal gap are connected in sequence, wherein the first horizontal gap, the second horizontal gap and the third horizontal gap are all parallel, and the first horizontal gap, the second horizontal gap and the third horizontal gap are all perpendicular to the first vertical gap and the second vertical gap.

4. The antenna according to claim 1, characterized in that: The second metal layer is provided with a second gap, and the second gap is L-shaped.

5. The antenna according to claim 4, characterized in that: The second slot includes a third vertical slot and a fourth horizontal slot that are connected to each other, and the fourth horizontal slot is parallel to the feeder portion.

6. The antenna according to claim 1, characterized in that The projection of the radiation portion on the dielectric layer is a trapezoid.

7. The antenna according to claim 6, characterized in that The feed line portion is connected to the long bottom side of the trapezoid of the radiating portion.

8. The antenna according to claim 1, characterized in that: The feed line portion is a microstrip feed line with a resistance of 50 ohms.

9. The antenna according to claim 1, characterized in that: The feed line portion is located at the center of an intersection of the first surface of the dielectric layer and a side edge of the dielectric layer.

10. An electronic device, characterized in that: Comprising the antenna according to any one of claims 1-9.

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