Antenna and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses an antenna and a communication device, comprising a radiation layer provided with a radiator, a microstrip feeder, a first microstrip line and a second microstrip line, the microstrip feeder is connected with the radiator, and the first microstrip line is connected with the second microstrip line; the first micro-strip line and the second micro-strip line are symmetrically arranged relative to the central line of the micro-strip feeder line in the length direction; the radiator is provided with two first gaps, and the two first gaps are symmetrical about the center line of the microstrip feeder line in the length direction; a radio frequency formation; the dielectric layer comprises a first surface and a second surface which are oppositely arranged, the radiation layer is arranged on the first surface, and the radio frequency ground layer is arranged on the second surface. Through the above mode, the embodiment of the utility model can enable the antenna to have independent controllable double trapped waves, thereby effectively suppressing in-band interference.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of antennas, and in particular, to an antenna and a communication device. Background Art

[0002] A planar broadband antenna is an antenna with broadband characteristics, and its structure is in a planar form. It can maintain stable performance within a relatively wide frequency range, and because of its advantages such as high transmission rate, low cost, light weight, simple design, low profile, high data transmission rate, and easy integration with other components, it has received extensive attention and in-depth research from practitioners and scholars in this field and is applied in fields such as radar systems and detection imaging.

[0003] In the process of implementing the present utility model, the inventors of the present utility model found that: currently, the existing planar broadband antennas do not have individually controllable dual notches in the band, and cannot effectively suppress in-band interference, which greatly limits the use of planar broadband antennas in modern wireless communication terminals. 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 a communication device that can have individually controllable dual notches in the band 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 radiation layer provided with a radiator, a microstrip feeder, a first microstrip line, and a second microstrip line, the microstrip feeder is connected to the radiator, and the first microstrip line and the second microstrip line are symmetrically arranged about the center line in the length direction of the microstrip feeder; the radiator is provided with two first slots, and the two first slots are symmetric about the center line in the length direction of the microstrip feeder; a radio frequency ground plane; a dielectric layer including a first surface and a second surface arranged opposite to each other, the radiation layer is arranged on the first surface, and the radio frequency ground plane is arranged on the second surface.

[0006] Optionally, the included angle between one of the first slots and the center line in the length direction of the microstrip feeder is 135°.

[0007] Optionally, the included angle between the other first slot and the center line in the length direction of the microstrip feeder is 225°.

[0008] Optionally, the projection of the radiator on the dielectric layer is a hexagon.

[0009] Optionally, the projection of the microstrip feeder on the radio frequency ground plane is at least partially located on the radio frequency ground plane.

[0010] Optionally, the shapes of the first microstrip line and the second microstrip line are both C-shaped.

[0011] Optionally, both the radiator and the microstrip feeder are disposed at the center position of the first surface, and the center lines of the radiator and the microstrip feeder are parallel to the center line of the first surface.

[0012] Optionally, the shape of the RF ground plane is rectangular.

[0013] Optionally, the projections of the first microstrip line and the second microstrip line on the RF ground plane are both completely located within the RF ground plane.

[0014] Optionally, the characteristic impedance of the microstrip feeder is 50 ohms.

[0015] To solve the above technical problems, another technical solution adopted by the present utility model is: to provide a communication device, including a housing and the above antenna, and the antenna is disposed on the housing.

[0016] 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 radiation layer provided with a radiator, a microstrip feeder, a first microstrip line and a second microstrip line, the microstrip feeder is connected to the radiator, and the first microstrip line and the second microstrip line are symmetrically disposed with respect to the center line in the length direction of the microstrip feeder; the radiator is provided with two first slits, and the two first slits are symmetric with respect to the center line in the length direction of the microstrip feeder; an RF ground plane; a dielectric layer including a first surface and a second surface disposed opposite to each other, the radiation layer is disposed on the first surface, and the RF ground plane is disposed on the second surface. Through the above structure, the present utility model can enable the antenna to form controllable in-band double notches through the first microstrip line, the second microstrip line and the two first slits, so as to effectively suppress in-band interference. Description of the Drawings

[0017] 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, without creative efforts, other drawings can also be obtained according to the drawings.

[0018] Figure 1 is an exploded structural schematic diagram of the antenna provided by the embodiment of the present utility model;

[0019] Figure 2 is an assembled structural schematic diagram of the antenna provided by the embodiment of the present utility model;

[0020] Figure 3 is a schematic diagram of the antenna from a top view perspective provided by the embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the side view angle of the broadband antenna provided by the embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the top view angle of the broadband antenna provided by the embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the bottom view angle of the broadband antenna provided by the embodiment of the present utility model;

[0024] Figure 7 It is a labeled schematic diagram of the top view angle of the broadband antenna provided by the embodiment of the present utility model;

[0025] Figure 8 It is a labeled schematic diagram of the bottom view angle of the broadband antenna provided by the embodiment of the present utility model;

[0026] Figure 9 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the L S parameter;

[0027] Figure 10 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the W S parameter;

[0028] Figure 11 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the L1 parameter;

[0029] Figure 12 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the L2 parameter

[0030] Figure 13 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the W1 parameter;

[0031] Figure 14 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model when changing the S parameter;

[0032] Figure 15 It is the standing wave ratio simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model under the preferred parameters;

[0033] Figure 16 It is the maximum gain and radiation efficiency simulation result schematic diagram of the broadband antenna provided by the embodiment of the present utility model under the preferred parameters;

[0034] Figure 17 It is the simulated radiation pattern of the broadband antenna provided by the embodiment of the present utility model at 4 GHz;

[0035] Figure 18 is the simulated radiation pattern of the broadband antenna provided by the embodiment of the present utility model at 10 GHz;

[0036] Figure 19 is the simulated radiation pattern of the broadband antenna provided by the embodiment of the present utility model at 14 GHz;

[0037] Figure 20 is the simulated radiation pattern of the broadband antenna provided by the embodiment of the present utility model at 20 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 3 , the antenna 1000 includes a radiation layer 1, a dielectric layer 2 and a radio frequency ground layer 3. The radiation layer 1, the dielectric layer 2 and the radio frequency ground layer 3 are stacked in sequence. Among them, the radiation layer 1 is used to convert electrical energy into electromagnetic wave energy and radiate it into space. The radiation layer 1 is usually made of a conductive material, such as a metal sheet or a metal wire. Through a specific shape and arrangement, it can efficiently radiate or receive electromagnetic waves; the dielectric layer 2 is used to isolate the antenna 1000, avoid direct contact between the radiation layer 1 and the radio frequency ground layer 3 resulting in a short circuit, effectively ensure the normal operation of the antenna 1000, enhance radiation and impedance matching, and can also provide mechanical support, provide a stable electromagnetic environment for the radiation layer 1 of the antenna 1000 to ensure the transmission of electromagnetic waves in the antenna 1000, thereby effectively ensuring the normal operation and performance of the antenna 1000; and since the dielectric layer 2 is disposed between the radiation layer 1 and the radio frequency ground layer 3, the dielectric layer 2 can enhance the overall structural strength of the antenna 1000, so that the stability and reliability of the antenna 1000 are guaranteed.

[0041] It is understandable that the radiation layer 1, the dielectric layer 2 and the RF ground layer 3 are combined to form a microstrip structure. The thickness of the dielectric layer 2 determines the operating frequency range, signal transmission rate and delay, electromagnetic field distribution and signal stability of the antenna 1000, etc. Specifically, the smaller the thickness of the dielectric layer 2, the higher the operating frequency of the antenna 1000, the more concentrated the signal transmission, the faster the signal transmission speed, and the more concentrated the electromagnetic field.

[0042] For the above-mentioned dielectric layer 2, please refer to Figure 1 , the dielectric layer 2 includes a first surface 21 and a second surface 22 which are oppositely arranged. The radiation layer 1 is disposed on the first surface 21, and the RF ground layer 3 is disposed on the second surface 22.

[0043] For the above-mentioned radiation layer 1, please refer to Figure 1 , the radiation layer 1 is provided with a radiator 11, a microstrip feeder 12, a first microstrip line 13 and a second microstrip line 14. The microstrip feeder 12 is connected to the radiator 11. The first microstrip line 13 and the second microstrip line 14 are symmetrically arranged about the center line in the length direction of the microstrip feeder 12. Among them, the shapes of the first microstrip line 13 and the second microstrip line 14 are both C-shaped, and both ends are open. And the opening direction of the C-shaped first microstrip line 13 is opposite to the opening direction of the C-shaped first microstrip line 14, and both are directed away from the microstrip feeder 12. The radiator 11 is provided with two first slots 111, and the two first slots 111 are symmetric about the center line in the length direction of the microstrip feeder 12.

[0044] It is understandable that the shape of the radiator 11 affects the radiation pattern of the antenna 1000. By adjusting the side length, angle of the radiator 11 with different shapes and the relative position with other components, the directivity of the antenna 1000 is optimized, so that the antenna 1000 has stronger radiation ability in a specific direction and weaker radiation in other directions. Preferably in this embodiment, the projection of the radiator 11 on the dielectric layer 2 is a hexagon, and the hexagonal radiator 11 is a symmetric shape, so as to optimize the radiation path of the electromagnetic wave of the antenna 1000, reduce the loss of energy during transmission, and improve the radiation efficiency of the antenna 1000. Further, in order to simplify the processing of the hexagonal radiator 11, the hexagonal radiator 11 is composed of a rectangular radiation patch plus two triangular radiation patches, and the two triangular radiation patches are symmetric about the center line in the length direction of the microstrip feeder 12 of the rectangular radiation patch.

[0045] In some embodiments, the included angle between one first slot 111 and the center line in the length direction of the microstrip feeder 12 is 135°, and / or the included angle between the other first slot 111 and the center line in the length direction of the microstrip feeder 12 is 225°.

[0046] It should be noted that, in order to unify the measurement standard of the included angle, the length direction of the microstrip feeder 12 is specified as the X direction, and the counterclockwise direction is specified as the measurement standard direction of the included angle. As Figure 3 shown, the included angle A is 135° and the included angle B is 225°.

[0047] It should be noted that the radiation performance of the antenna 1000 is determined by the size parameters of the radiator 11. The bandwidth and reflection coefficient of the antenna 1000 are jointly determined by the size parameters of the RF ground layer 3 and the size parameters of the radiator 11. The center frequency of the notch and the isolation degree at the notch center frequency are jointly determined by the size parameters of the first slot 111 on the radiator 11 and the size parameters of the first microstrip line 13 of the C type and the second microstrip line 14 of the C type.

[0048] In some embodiments, both the radiator 11 and the microstrip feeder 12 are disposed at the center position of the first surface 21, and the center lines of the radiator 11 and the microstrip feeder 12 are parallel to the center line of the first surface 21.

[0049] In some embodiments, the projection of the microstrip feeder 12 on the RF ground layer 3 is at least partially located on the RF ground layer 3.

[0050] The characteristic impedance of the microstrip feeder 12 is a crucial parameter, which directly affects the signal transmission efficiency, power distribution, and the overall performance of the antenna 1000. The characteristic impedance is a physical quantity that describes the relationship between voltage and current on a transmission line, and it determines the impedance matching situation encountered by the signal of the antenna 1000 during transmission. In this embodiment, preferably, the characteristic impedance of the microstrip feeder 12 is 50 ohms.

[0051] In some embodiments, the projection of the first microstrip line 13 on the RF ground layer 3 and the projection of the second microstrip line 14 on the RF ground layer 3 are both completely located on the RF ground layer 3, enhancing the coupling between the first microstrip line 13 and the RF ground layer 3 and the coupling between the second microstrip line 14 and the RF ground layer 3, thereby reducing the electromagnetic interference to the surrounding environment. Moreover, the positional relationship between the first microstrip line 13 and the second microstrip line 14 and the RF ground layer 3 makes the overall structure of the antenna 1000 more compact and enhances the integration degree of the antenna 1000.

[0052] For the above-mentioned RF ground layer 3, please refer to Figure 1 , the shape of the RF ground layer 3 is rectangular.

[0053] In an embodiment of the present utility model, the antenna 1000 includes a radiation layer 1, a dielectric layer 2, and a radio frequency ground layer 3. The radiation layer 1, the dielectric layer 2, and the radio frequency ground layer 3 are stacked in sequence. Among them, the radiation layer 1 is provided with a radiator 11, a microstrip feeder 12, a first microstrip line 13, and a second microstrip line 14. The microstrip feeder 12 is connected to the radiator 11. The first microstrip line 13 and the second microstrip line 14 are symmetrically arranged with respect to the center line in the length direction of the microstrip feeder 12. The dielectric layer 2 includes a first surface 21 and a second surface 22 arranged opposite to each other. The radiation layer 1 is disposed on the first surface 21, and the radio frequency ground layer 3 is disposed on the second surface 22. Through the above structure, the antenna 1000 has controllable dual notches through the first microstrip line 13, the second microstrip line 14, and the two first slots 111, thereby effectively suppressing the in-band interference of the antenna 1000.

[0054] To facilitate readers to better understand the concept of the present utility model, the following embodiment of the broadband antenna 2000 based on the above structure is provided and a simulation experiment is carried out. The dielectric constant of the dielectric layer 2 is specified as 3.38, the dielectric loss is 0.0022, and the thickness is 0.762 mm. The radiation layer 1 and the radio frequency ground layer 3 are made of copper plating material, and the thickness of both is 0.035 mm.

[0055] Please refer to Figures 4 - 8 , specify L P as the length of the radio frequency ground layer 3 or the length of the dielectric layer 2, W P as the width of the dielectric layer 2, W G as the width of the radio frequency ground layer 3, H R as the height of the rectangular radiation patch of the radiator 11 forming a hexagon, H T as the height of the triangular radiation patch of the radiator 11 forming a hexagon, L R as the length of the rectangular radiation patch of the radiator 11 forming a hexagon or the length of the triangular radiation patch of the radiator 11 forming a hexagon, L S as the length of the first slot 111 located on the hexagon-shaped radiator 11, W S as the width of the first slot 111 located on the hexagon-shaped radiator 11, L1 is the length of the part of the C-shaped microstrip line perpendicular to the X direction, L2 is the length of the part of the C-shaped first microstrip line 13 or the C-shaped second microstrip line 14 parallel to the X direction, W1 is the width of the part of the C-shaped first microstrip line 13 or the C-shaped second microstrip line 14 parallel to the X direction, S is the distance between the C-shaped first microstrip line 13 or the C-shaped second microstrip line 14 and the 50-ohm microstrip feeder 12, L F as the length of the microstrip feeder 12, W F as the width of the microstrip feeder 12.

[0056] Among them, the notch center frequencies f N1 and fN2 The relationship with parameter L S 、L1, and L2 is summarized as:

[0057]

[0058] where ε r is the dielectric constant of the medium, and c is the speed of light in a vacuum.

[0059] Corresponding to the above structure, the key parameters affecting the VSWR of the broadband antenna 2000 are: L S 、W S 、L1, L2, W1, and S. Therefore, simulation experiments are carried out on the above six key parameters, so that the broadband antenna 2000 obtains the desired performance. Specifically as follows:

[0060] Preferably, when L S is selected as 5.9 mm, 6.9 mm, and 7.9 mm respectively, the variation of the VSWR of the broadband antenna 2000 with different parameter L S is as shown in Figure 9 . As the parameter L S increases, in the passband less than the center frequency of the first notch, its VSWR increases; in the frequency range greater than the center frequency of the first notch and less than the center frequency of the second notch, the VSWR decreases; in the passband greater than the center frequency of the second notch, the VSWR first increases and then decreases; the passband bandwidth remains unchanged; the center frequency of the first notch decreases, and the VSWR at the center frequency of the first notch increases; the center frequency of the second notch remains unchanged, and the VSWR at the center frequency of the second notch remains unchanged.

[0061] Preferably, when W S is selected as 0.2 mm, 0.4 mm, and 0.6 mm respectively, the variation of the VSWR of the broadband antenna 2000 with different W S is as shown in Figure 10 . As the parameter W S increases, in the passband less than the center frequency of the first notch, its VSWR first remains unchanged and then increases; in the frequency range greater than the center frequency of the first notch and less than the center frequency of the second notch, the VSWR decreases; in the passband greater than the center frequency of the second notch, the VSWR remains unchanged; the passband bandwidth remains unchanged; the center frequency of the first notch moves down, and the VSWR at the center frequency of the first notch increases; the center frequency of the second notch remains unchanged, and the VSWR at the center frequency of the second notch remains unchanged.

[0062] Preferably, when L1 is selected as 1.5 mm, 2.0 mm, and 2.5 mm respectively, the variation of the VSWR of the broadband antenna 2000 with different L1 is as shown in Figure 11As shown, as the parameter L1 increases, within the passband below the first notch center frequency, its standing wave ratio remains unchanged; within the frequency range greater than the first notch center frequency and less than the second notch center frequency, the standing wave ratio increases; within the passband greater than the second notch center frequency, the standing wave ratio first increases, then remains unchanged, and then decreases; the passband bandwidth first decreases and then increases; the center frequency of the first notch remains unchanged, and the standing wave ratio at the first notch center frequency remains unchanged; the center frequency of the second notch moves downward, and the standing wave ratio at the second notch center frequency increases.

[0063] Preferably, when L2 is selected to be 4.0 mm, 4.5 mm, and 5.0 mm respectively, the variation of the standing wave ratio of the broadband antenna 2000 with different L2 is as Figure 12 shown. As the parameter L2 increases, within the passband below the first notch center frequency, its standing wave ratio remains unchanged; within the frequency range greater than the first notch center frequency and less than the second notch center frequency, the standing wave ratio increases; within the passband greater than the second notch center frequency, the standing wave ratio first decreases and then increases; the passband bandwidth decreases; the center frequency of the first notch remains unchanged, and the standing wave ratio at the first notch center frequency remains unchanged; the center frequency of the second notch moves downward, and the standing wave ratio at the second notch center frequency first decreases and then increases.

[0064] Preferably, when W1 is selected to be 0.10 mm, 0.15 mm, and 0.20 mm respectively, the variation of the standing wave ratio of the broadband antenna 2000 with different W1 is as Figure 13 shown. As the parameter W1 increases, within the passband below the first notch center frequency, its standing wave ratio remains unchanged; within the frequency range greater than the first notch center frequency and less than the second notch center frequency, the standing wave ratio first remains unchanged and then increases; within the passband greater than the second notch center frequency, the standing wave ratio first decreases and then remains unchanged; the passband bandwidth increases; the center frequency of the first notch remains unchanged, and the standing wave ratio at the first notch center frequency remains unchanged; the center frequency of the second notch moves downward, and the standing wave ratio at the second notch center frequency increases.

[0065] Preferably, when S is selected to be 0.10 mm, 0.15 mm, and 0.20 mm respectively, the variation of the standing wave ratio of the broadband antenna 2000 with different S is as Figure 14 shown. As the parameter S increases, within the passband below the first notch center frequency, its standing wave ratio remains unchanged; within the frequency range greater than the first notch center frequency and less than the second notch center frequency, the standing wave ratio first remains unchanged and then increases; within the passband greater than the second notch center frequency, the standing wave ratio first decreases and then remains unchanged; the passband bandwidth remains unchanged; the center frequency of the first notch remains unchanged, and the standing wave ratio at the first notch center frequency remains unchanged; the center frequency of the second notch moves downward, and the standing wave ratio at the second notch center frequency decreases.

[0066] From the above analysis combined with Figures 9 - 14It can be seen that the center frequency of the first notch and the isolation at the center frequency of the first notch can be controlled separately, and the center frequency of the second notch and the isolation at the center frequency of the second notch can also be controlled separately.

[0067] Further, when the parameters of the broadband antenna 2000 are preferably L P = 30.0 mm, W P = 30.0 mm, L G = 9.8 mm, H R = 9 mm, H T = 9.5 mm, L R = 19.0 mm, L S = 6.9 mm, W S = 0.4 mm, L1 = 2.0 mm, L2 = 5.0 mm, W1 = 0.1 mm, S = 0.1 mm, L F = 10.0 mm, W F = 1.8 mm, the performance of each parameter of the broadband antenna 2000 is relatively excellent, and its reflection coefficient is as Figure 15 shown. It can be seen from Figure 15 that the bandwidth range with a standing wave ratio less than 2 is 3.2 to 20.9 GHz, the center frequency is 12.05 GHz, the absolute bandwidth is 17.7 GHz, and the relative bandwidth is 146.9%, showing broadband characteristics; within the passband, there are also five transmission poles, located at 3.6 GHz, 8.4 GHz, 15.4 GHz, 16.7 GHz, and 19.8 GHz respectively, ensuring the flatness of the maximum gain and radiation efficiency within the passband; there are also two transmission zeros at the notches, located at 6.8 GHz and 12.4 GHz respectively, which can effectively suppress the in-band interference at this frequency.

[0068] The simulation result diagrams of the maximum gain and radiation efficiency of the broadband antenna 2000 are as Figure 16 shown. It can be seen from Figure 16 that within the passband, its average maximum gain is 4.77 dBi, showing the advantage of high maximum gain; within the passband, its average radiation efficiency is 95.4%, showing the advantage of high radiation efficiency. There is a notch at 6.8 GHz, and the maximum gain at the center frequency of the notch is only -5.67 dB, and the radiation efficiency is 21.6%; there is a notch at 12.4 GHz, and the maximum gain at the center frequency of the notch is only -11.24 dB, and the radiation efficiency is 12.2%. Comparing the average maximum gain and the average radiation efficiency, it can be seen that the broadband antenna 2000 has the characteristic of high isolation at the center frequencies of the first notch and the second notch.

[0069] The radiation patterns of the broadband antenna 2000 at 4 GHz, 10 GHz, 14 GHz, and 20 GHz are as Figures 17 - 20 shown. It can be seen fromFigures 17 - 20 Analysis shows that the broadband antenna 2000 is an omnidirectional broadband antenna 2000.

[0070] The present utility model also provides an embodiment of a communication device. The communication device includes a housing and the above-mentioned antenna 1000. For the structure and function of the antenna 1000, please refer to the above-mentioned embodiments, which will not be elaborated here one by one. The antenna is disposed in the housing.

[0071] In some embodiments, the housing is provided with a receiving cavity, and the antenna is received in the receiving cavity to reduce the contact distance between the antenna 1000 and the external environment, thereby reducing the influence of the housing on the working state of the antenna 1000. Moreover, the receiving cavity effectively limits the antenna 1000, avoiding unexpected shaking of the antenna when the communication device is subjected to an external force.

[0072] In some embodiments, especially in large devices, the communication device further includes a grid skeleton and a dielectric thin plate. The grid skeleton is designed according to the actual housing so that the grid skeleton is adapted to the housing. The dielectric thin plate is attached to the grid skeleton. Among them, the grid skeleton provides good rigid support, and the dielectric thin plate provides electrical performance and protection. The antenna 1000 is fixed to the grid skeleton and the dielectric thin plate. Specific fixing methods include but are not limited to welding, gluing, etc.

[0073] It should be noted that the present utility model provides preferred embodiments in the description and drawings 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 do not serve as 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-mentioned 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 changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. An antenna, characterized in that, Comprising: A radiation layer provided with a radiator, a microstrip feeder, a first microstrip line and a second microstrip line, the microstrip feeder being connected to the radiator, and the first microstrip line and the second microstrip line being symmetrically arranged with respect to the center line in the length direction of the microstrip feeder; The radiator is provided with two first slots, and the two first slots are symmetric with respect to the center line in the length direction of the microstrip feeder; A radio frequency ground plane; A dielectric layer including a first surface and a second surface arranged opposite to each other, the radiation layer being disposed on the first surface, and the radio frequency ground plane being disposed on the second surface.

2. The antenna according to claim 1, wherein The included angle between one of the first slots and the center line in the length direction of the microstrip feeder is 135°, and / or the included angle between the other first slot and the center line in the length direction of the microstrip feeder is 225°.

3. The antenna according to claim 2, wherein The projection of the radiator on the dielectric layer is a hexagon.

4. The antenna according to claim 2, wherein The projection of the microstrip feeder on the radio frequency ground plane is at least partially located on the radio frequency ground plane.

5. The antenna according to claim 1, wherein The shapes of the first microstrip line and the second microstrip line are both C-shaped.

6. The antenna according to any one of claims 2-5, wherein The radiator and the microstrip feeder are both disposed at the center position of the first surface, and the center lines of the radiator and the microstrip feeder are both parallel to the center line of the first surface.

7. The antenna according to claim 1, wherein The shape of the radio frequency ground plane is rectangular.

8. The antenna according to claim 1, wherein The projections of the first microstrip line and the second microstrip line on the radio frequency ground plane are both completely located on the radio frequency ground plane.

9. The antenna according to claim 1, wherein The characteristic impedance of the microstrip feeder is 50 ohms.

10. A communication device, characterized in that, Comprising a housing and an antenna according to any one of claims 1-9, the antenna being disposed in the housing.

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