Antenna and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of communication, and particularly discloses an antenna and communication equipment, comprising a dielectric layer, a radiation layer and a radio frequency ground layer, 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 comprises a radiator, a microstrip feeder line and two open-circuit branches, the microstrip feeder line is arranged in the first direction, the radiator is connected to one end of the microstrip feeder line, the radiator and the open-circuit branches are sequentially arranged in the first direction at intervals, the two open-circuit branches are arranged on the two sides of the microstrip feeder line at intervals respectively, and the two open-circuit branches are connected with the microstrip feeder line. A first opening is formed in the open-circuit branch, and the direction of the first opening deviates from the microstrip feeder; the radio frequency ground layer is arranged on the second surface, and the radio frequency ground layer is coupled with the radiation layer. Through the above mode, the embodiment of the utility model can suppress in-band interference.

Description

Technical Field

[0001] The embodiments of the utility model relate to the field of communication technology, and in particular to an antenna and communication equipment. Background Art

[0002] Millimeter-wave planar broadband antennas are widely used in wireless communication equipment due to their advantages such as high transmission rate, low cost, light weight, simple design, and easy integration with other components.

[0003] In the process of realizing the present invention, the inventors found that the current planar ultra-wideband antenna does not have the feature of in-band notch wave, cannot effectively suppress in-band interference, and easily leads to a decrease in signal quality, a reduction in signal coverage range and a decrease in compatibility, which limits its use in wireless communication equipment. Utility Model Content

[0004] The main technical problem solved by the embodiments of the present invention is to provide an antenna and a communication device that can suppress in-band interference.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: providing an antenna, the antenna includes a dielectric layer, a radiating layer and a radio frequency stratum; the dielectric layer includes a first surface and a second surface arranged opposite to each other; the radiating layer is arranged on the first surface, the radiating layer includes a radiator, a microstrip feeder and an open-circuit branch, the microstrip feeder is arranged along a first direction, the radiator is connected to one end of the microstrip feeder, the radiator and the open-circuit branch are arranged in sequence along the first direction, two open-circuit branches are provided, and the two open branches are respectively arranged on both sides of the microstrip feeder at intervals, and the open branches are formed with a first opening, and the direction of the first opening is away from the microstrip feeder; the radio frequency stratum is arranged on the second surface, and the radio frequency stratum is coupled to the radiating layer.

[0006] Optionally, the open branch includes a parallel section and a vertical section, the parallel section is arranged along the first direction, the vertical sections are arranged at both ends of the parallel section, the vertical sections are perpendicular to the first direction and extend away from the microstrip feeder, and the parallel section and the two vertical sections enclose to form a first opening.

[0007] Optionally, the two open branches are arranged symmetrically about the microstrip feed line.

[0008] Optionally, the radio frequency layer is provided at an end of the second surface away from the radiator, and a side of the radio frequency layer close to the radiator is recessed inward to form a second opening.

[0009] Optionally, along the first direction, the side of the radio frequency stratum away from the radiator coincides with the edge of the dielectric layer, and the side of the radio frequency stratum close to the radiator is spaced apart from the edge of the dielectric layer; along the direction perpendicular to the first direction, both sides of the radio frequency stratum coincide with the edges of the dielectric layer.

[0010] Optionally, the second opening is configured to be rectangular.

[0011] Optionally, the radiator includes a first radiating patch, a second radiating patch, a third radiating patch, and a fourth radiating patch, the first radiating patch is configured to be rectangular, and the first radiating patch is provided with a rectangular gap;

[0012] One side of the first radiation patch is connected to the microstrip feed line, and the second radiation patch, the third radiation patch and the fourth radiation patch are respectively connected to the other three sides of the first radiation patch, and the outer edges of the second radiation patch, the third radiation patch and the fourth radiation patch are all arcs.

[0013] Optionally, the second radiation patch, the third radiation patch and the fourth radiation patch are all semi-ellipses, and the edges of the second radiation patch, the third radiation patch and the fourth radiation patch used for connecting with the first radiation patch are all long axes of the semicircular arc.

[0014] Optionally, the antenna has a notch center frequency, and the relationship between the notch center frequency and the size of the open-circuit branch is: Among them, ε r is the dielectric constant of the medium, c is the speed of wave transmission in a vacuum, L1 is the length of the first opening along the first direction, and L2 is the length of the open branch perpendicular to the first direction.

[0015] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide a communication device, including an antenna as described in any one of the above embodiments.

[0016] The beneficial effects of the embodiment of the present utility model are as follows: Different from the prior art, the embodiment of the present utility model provides an antenna, which includes a dielectric layer, a radiation layer and a radio frequency ground layer, the dielectric layer includes a first surface and a second surface arranged opposite to each other; the radiation layer is arranged on the first surface, the radiation layer includes a radiator, a microstrip feeder and an open-circuit branch, the microstrip feeder is arranged along a first direction, the radiator is connected to one end of the microstrip feeder, the radiator and the open-circuit branch are arranged in sequence along the first direction, there are two open-circuit branches, the two open branches are respectively arranged on both sides of the microstrip feeder, the open branches are formed with a first opening, and the direction of the first opening is away from the microstrip feeder; the radio frequency ground layer is arranged on the second surface, and the radio frequency ground layer is coupled to the radiation layer. Through the open-circuit branches in the above manner, the embodiment of the utility model can introduce a notch within a specific frequency, so that it has the characteristics of an in-band notch, effectively suppressing its in-band interference within this frequency band, improving signal quality, expanding signal coverage and improving compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0018] Figure 1 1 is a bottom view of the antenna according to an embodiment of the present invention;

[0019] Figure 2 This is a front view of the antenna according to an embodiment of the present invention;

[0020] Figure 3 is a rear view of the antenna according to an embodiment of the present invention;

[0021] Figure 4 1 is a schematic diagram of parameters of the main viewing direction of the antenna according to an embodiment of the present utility model;

[0022] Figure 5 1 is a schematic diagram of parameters of the rear-view direction of the antenna according to an embodiment of the present invention;

[0023] Figure 6 1 is a graph showing the relationship between the standing wave ratio of a simulation example of an antenna according to an embodiment of the present invention and different L1 values;

[0024] Figure 7 1 is a graph showing the relationship between the standing wave ratio of a simulation example of an antenna according to an embodiment of the present invention and different L2 values;

[0025] Figure 8 1 is a graph showing the relationship between the standing wave ratio of a simulation example of an antenna according to an embodiment of the present invention and the change of W1;

[0026] Figure 9 1 is a graph showing the relationship between the standing wave ratio of a simulation example of an antenna according to an embodiment of the present invention and different S values;

[0027] Figure 10 is a simulation result of the standing wave ratio of a simulation example of the antenna according to an embodiment of the present utility model;

[0028] Figure 11 1 is a diagram showing the maximum gain and radiation efficiency simulation results of a simulation example of an antenna according to an embodiment of the present invention;

[0029] Figure 12 This is the radiation pattern of a preferred simulation example of the antenna of the embodiment of the present utility model at 10.0 GHz;

[0030] Figure 13 This is the radiation pattern of a preferred simulation example of the antenna of the embodiment of the present utility model at 28.0 GHz.

[0031] Description of reference numerals:

[0032] 1. dielectric layer; 11. first surface; 12. second surface;

[0033] 2. Radiating layer; 21. Radiator; 211. First radiating patch; 2111. Rectangular gap;

[0034] 212, second radiating patch; 213, third radiating patch; 214, fourth radiating patch; 22, microstrip feed line; 23, open branch; 231, first opening; 232, parallel section; 233, vertical section;

[0035] 3. Radio frequency formation; 31. Second opening. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items.

[0038] See also Figures 1 to 3 The antenna includes a dielectric layer 1, a radiation layer 2 and a radio frequency layer 3. The radiation layer 2 and the radio frequency layer 3 are relatively arranged on the upper and lower sides of the dielectric layer 1, and the radio frequency layer 3 is coupled to the radiation layer 2.

[0039] For the dielectric layer 1 mentioned above, see Figures 1 to 3 The dielectric layer 1 includes a first surface 11 and a second surface 12 that are opposite to each other.

[0040] For the radiation layer 2 above, see Figure 1 and Figure 2The radiation layer 2 is provided on the first surface 11 and includes a radiator 21, a microstrip feed line 22, and an open-circuit branch 23. The microstrip feed line 22 is provided along a first direction. The radiator 21 is connected to one end of the microstrip feed line 22. The other end of the microstrip feed line 22 coincides with the edge of the dielectric layer 1. The side of the radiator 21 away from the microstrip feed line 22 is spaced apart from the edge of the dielectric layer 1. The first direction is the length direction of the dielectric layer 1 and is directed from the radiator 21 to the microstrip feed line 22. The radiator 21 and the open-circuit branch 23 are spaced apart in sequence along the first direction. There are two open-circuit branches 23, one on each side of the microstrip feed line 22. The open-circuit branch 23 includes a parallel section 232 and a vertical section 233. The parallel section 232 is provided along the first direction. There are two vertical sections 233, one at each end of the parallel section 232. The vertical section 233 extends perpendicular to the first direction and away from the microstrip feed line 22. The parallel section 232 and the two vertical sections 233 enclose a first opening 231. Optionally, the two open branches 23 are arranged symmetrically about the microstrip feed line 22. It should be noted that the notched characteristic of the antenna is introduced by the open branches 23.

[0041] For the radiator 21, see Figure 2 The radiator 21 includes a first radiating patch 211, a second radiating patch 212, a third radiating patch 213, and a fourth radiating patch 214. The first radiating patch 211 is configured as a rectangle and is provided with a rectangular slot 2111. The center of the rectangular slot 2111 coincides with the center of the first radiating patch 211. Two sides of the rectangular slot 2111 are arranged parallel to the first direction, and the other two sides of the rectangular slot 2111 are arranged perpendicular to the first direction. One side of the first radiating patch 211 is connected to the microstrip feed line 22. The second radiating patch 212, the third radiating patch 213, and the fourth radiating patch 214 are respectively connected to the other three sides of the first radiating patch 211. The outer edges of the second radiating patch 212, the third radiating patch 213, and the fourth radiating patch 214 are all curved. Optionally, the second radiation patch 212, the third radiation patch 213 and the fourth radiation patch 214 are all semi-ellipses, the outer edges of the second radiation patch 212, the third radiation patch 213 and the fourth radiation patch 214 are all elliptical arcs, and the edges of the second radiation patch 212, the third radiation patch 213 and the fourth radiation patch 214 used to connect with the first radiation patch 211 are all the long axes of the semicircular arcs.

[0042] In some embodiments, the dielectric layer 1 is a symmetrical pattern, and the symmetry axis of the dielectric layer 1 is parallel to the first direction. Optionally, the radiator 21 and the microstrip feed line 22 are symmetrically arranged about the symmetry axis of the dielectric layer 1, and the two open branches 23 are symmetrically arranged about the symmetry axis of the dielectric layer 1.

[0043] For RF Stratum 3 above, see Figure 1 and Figure 3 , along the first direction, the radio frequency layer 3 is arranged at the end of the second surface 12 away from the radiator 21, and the edge of the radio frequency layer 3 on the side away from the radiator 21 coincides with the edge of the dielectric layer 1, and the edge of the radio frequency layer 3 on the side close to the radiator 21 is spaced apart from the edge of the dielectric layer 1. Along the direction perpendicular to the first direction, the edges of both sides of the radio frequency layer 3 coincide with the edges of the dielectric layer 1. The side of the radio frequency layer 3 close to the radiator 21 is recessed inward to form a second opening 31, and the edge of the radio frequency layer 3 on the side close to the radiator 21 is arranged perpendicular to the first direction. The second opening 31 is rectangular, and the edges of the radio frequency layer 3 on both sides of the second opening 31 are arranged parallel to the first direction, and the edge of the radio frequency layer 3 on the bottom side of the second opening 31 is arranged perpendicular to the first direction. Optionally, the radio frequency layer 3 is arranged symmetrically about the symmetry axis of the dielectric layer 1.

[0044] In some embodiments, the antenna has a notch center frequency, and the relationship between the notch center frequency and the size of the open-circuit branch 23 is:

[0045]

[0046] Wherein, εr is the dielectric constant of the medium, c is the speed of wave transmission in a vacuum, L1 is the length of the first opening 231 along the first direction, and L2 is the length of the open branch 23 perpendicular to the first direction.

[0047] In order to verify the concept of the antenna of the embodiment of the utility model, the simulation example is as follows:

[0048] See also Figure 4 and Figure 5 , shows the layout size parameter description of the simulation example, where the dielectric constant of dielectric layer 1 is 3.38, the dielectric loss is 0.0022, and the thickness is 0.2mm. The material of RF layer 3 is copper plating and the thickness is 0.035mm.

[0049] See also Figures 6 to 9 , shows the influence of the size parameters L1, L2, W1, ST of the open branch 23 on the antenna standing wave ratio. Figure 6 It can be seen that as the parameter L1 increases, the bandwidth of the antenna increases slightly, the notch center frequency moves down, the standing wave ratio at the notch center frequency increases slightly first and then decreases slightly, the notch bandwidth increases, the standing wave ratio below the notch center frequency remains unchanged and then increases, and the standing wave ratio above the notch center frequency decreases. Figure 7 It can be seen that as the parameter L2 increases, the bandwidth of the antenna remains almost unchanged, the notch center frequency moves down, the standing wave ratio at the notch center frequency becomes smaller, the notch bandwidth becomes narrower, the standing wave ratio below the notch center frequency first remains unchanged and then increases, and the standing wave ratio above the notch center frequency first decreases and then remains unchanged. Figure 8It can be seen that as the parameter W1 increases, the bandwidth of the antenna remains unchanged, the notch center frequency moves slightly downward, the standing wave ratio at the notch center frequency becomes slightly smaller, the notch bandwidth becomes narrower, the standing wave ratio below the notch center frequency remains almost unchanged, and the standing wave ratio above the notch center frequency first decreases and then remains unchanged. Figure 9 It can be seen that as the parameter S increases, the bandwidth of the antenna increases, the notch center frequency moves slightly downward, the standing wave ratio at the notch center frequency decreases, the notch bandwidth becomes narrower, the standing wave ratio below the notch center frequency remains unchanged and then decreases, and the standing wave ratio above the notch center frequency decreases.

[0050] Based on the above, the notch center frequency, isolation at the notch center frequency, and notch bandwidth are controlled by the size parameters of the C-shaped slot. By optimizing the antenna parameters, an optimal simulation example can be obtained. The parameters are as follows:

[0051] LA=11.0mm, WA=10.0mm, LGM=3.3mm, LGRL=4.0mm, WGM=8.2mm, LP=6.5mm, WP=4.0mm, LVT=1. 3mm, LHT=0.8mm, L1=2.1mm, L2=1.6mm, W2=0.1mm, S=0.1mm, LS=2.0mm, LF=3.5mm, WF=0.4mm.

[0052] Figure 10 The reflection coefficient of a preferred simulation example of an antenna is shown by Figure 10 It can be seen that the bandwidth range for standing wave ratio less than 2 is 9.4 to 29.0 GHz, the center frequency is 19.2 GHz, the absolute bandwidth is 19.6 GHz, and the relative bandwidth is 102.1%, showing broadband characteristics; in the passband, there are two transmission poles, located at 11.7 GHz and 24.4 GHz respectively, ensuring the maximum gain and flatness of radiation efficiency in the passband; there is also a transmission zero at the notch, located at 19.1 GHz, which can effectively suppress the in-band interference at this frequency.

[0053] Figure 11 The simulation results for the maximum gain and radiation efficiency of a preferred antenna example are shown. As can be seen, within the passband, the average maximum gain is 3.98 dBi, demonstrating its high maximum gain advantage; within the passband, the average radiation efficiency is 94.4%, demonstrating its high radiation efficiency advantage. There is a notch at 29.1 GHz, with a maximum gain of only -8.05 dB at the notch's center frequency, and a radiation efficiency of 15.3%. Comparing the average maximum gain and average radiation efficiency demonstrates that the antenna exhibits high isolation at the notch's center frequency.

[0054] Figure 12 and Figure 13The radiation patterns of the antenna at 10.0 GHz and 28.0 GHz are shown. Figure 12 and Figure 13 It can be seen that the antenna is an omnidirectional antenna.

[0055] In an embodiment of the present utility model, the antenna includes a dielectric layer 1, a radiating layer 2 and a radio frequency layer 3. The dielectric layer 1 includes a first surface 11 and a second surface 12 arranged opposite to each other; the radiating layer 2 is arranged on the first surface 11, and the radiating layer 2 includes a radiator 21, a microstrip feed line 22 and an open branch 23. The microstrip feed line 22 is arranged along a first direction, the radiator 21 is connected to one end of the microstrip feed line 22, the radiator 21 and the open branch 23 are arranged in sequence along the first direction, two open branches 23 are provided, and the two open branches 23 are respectively arranged on both sides of the microstrip feed line 22 at intervals. The open branch 23 is formed with a first opening 231, and the direction of the first opening 231 is away from the microstrip feed line 22; the radio frequency layer 3 is provided on the second surface 12, and the radio frequency layer 3 is coupled to the radiating layer 2. Through the open branch 23 in the above-mentioned manner, the embodiment of the present invention can introduce a notch within a specific frequency, making it have the characteristics of an in-band notch, effectively suppressing its in-band interference within this frequency band, improving signal quality, expanding signal coverage and improving compatibility.

[0056] The present invention provides an embodiment of a communication device, which includes the above-mentioned hull. The structure and function of the hull can be found in the above-mentioned embodiment, which will not be described in detail here.

[0057] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention 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 on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An antenna, characterized in that: include: The dielectric layer includes a first surface and a second surface disposed opposite to each other; A radiation layer is provided on the first surface, the radiation layer including a radiator, a microstrip feeder and an open branch, the microstrip feeder is provided along a first direction, the radiator is connected to one end of the microstrip feeder, the radiator and the open branch are arranged in sequence along the first direction, two open branches are provided, and the two open branches are respectively spaced apart on both sides of the microstrip feeder, and the open branch has a first opening formed therein, and the first opening faces away from the microstrip feeder; A radio frequency layer is provided on the second surface, and the radio frequency layer is coupled with the radiation layer.

2. The antenna according to claim 1, wherein The open branch includes a parallel section and a vertical section, the parallel section is arranged along the first direction, the vertical section is arranged at both ends of the parallel section, the vertical section is perpendicular to the first direction and extends away from the microstrip feed line, and the parallel section and the two vertical sections enclose to form the first opening.

3. The antenna according to claim 1, wherein The two open branches are arranged symmetrically about the microstrip feed line.

4. The antenna according to claim 1, wherein The radio frequency layer is arranged at an end of the second surface away from the radiator, and a side of the radio frequency layer close to the radiator is recessed inward to form a second opening.

5. The antenna according to claim 4, characterized in that Along the first direction, a side of the radio frequency layer away from the radiator overlaps with an edge of the dielectric layer, and a side of the radio frequency layer close to the radiator is spaced apart from the edge of the dielectric layer; Along a direction perpendicular to the first direction, two sides of the radio frequency layer overlap with edges of the dielectric layer.

6. The antenna according to claim 4, wherein: The second opening is configured to be rectangular.

7. The antenna according to claim 1, wherein The radiator includes a first radiating patch, a second radiating patch, a third radiating patch and a fourth radiating patch, wherein the first radiating patch is configured as a rectangle and is provided with a rectangular gap; One side of the first radiation patch is connected to the microstrip feed line, and the second radiation patch, the third radiation patch and the fourth radiation patch are respectively connected to the other three sides of the first radiation patch, and the outer edges of the second radiation patch, the third radiation patch and the fourth radiation patch are all arcs.

8. The antenna according to claim 7, characterized in that The second radiation patch, the third radiation patch and the fourth radiation patch are all semi-ellipses, and the edges of the second radiation patch, the third radiation patch and the fourth radiation patch used for connecting with the first radiation patch are all long axes of semicircular arcs.

9. The antenna according to any one of claims 1 to 8, characterized in that: The antenna has a notch center frequency, and the relationship between the notch center frequency and the size of the open-circuit branch is: Among them, ε r is the dielectric constant of the medium, c is the speed of wave transmission in a vacuum, L1 is the length of the first opening along the first direction, and L2 is the length of the open branch perpendicular to the first direction.

10. A communication device, characterized in that: Comprising the antenna according to any one of claims 1 to 9.

Images