Multi-band dual-polarized antenna

Abstract

The utility model provides a multi-band dual-polarized antenna which is applied to the technical field of communication, the multi-band dual-polarized antenna comprises a first radiation patch, a second radiation patch, a third radiation patch and a grounding patch, the second radiation patch is arranged between the first radiation patch and the third radiation patch, and the grounding patch is arranged between the first radiation patch and the third radiation patch. The third radiation patch is arranged between the second radiation patch and the grounding patch; a first dielectric substrate is arranged between the first radiation patch and the second radiation patch, a second dielectric substrate is arranged between the second radiation patch and the third radiation patch, and a third dielectric substrate is arranged between the third radiation patch and the grounding patch; the two feed metalized via holes respectively penetrate through the grounding patch, the third radiation patch, the second radiation patch and the first radiation patch but are not in contact with each other, a first clearance area is kept between the two feed metalized via holes and each radiation patch, a second clearance area is kept between the two feed metalized via holes and the grounding patch, and the first clearance area is far larger than the second clearance area. The antenna can better meet actual mobile communication requirements.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a multi-band dual-polarization antenna. Background Art

[0002] Since different wireless communication standards and technologies may operate in different frequency bands, in order to support different standards and technologies, antennas need to be able to communicate effectively in multiple frequency bands. In addition, in mobile communications, ground reflection and scattering will cause multipath effects, affecting the transmission quality of signals. In order to overcome the adverse effects of multipath effects, the application of dual polarization has become a realistic choice. Dual polarization antennas can simultaneously transmit or receive two orthogonal linearly polarized or circularly polarized electromagnetic waves at the same frequency, and there is almost no interference between orthogonal channels. However, most existing antennas are single-band or single-polarized, and are large in size, making it difficult to meet existing mobile communication needs. Utility Model Content

[0003] The embodiment of the present application provides a multi-band dual-polarization antenna to solve the problem that most existing antennas are single-band or single-polarization and are large in size, making it difficult to meet existing mobile communication needs.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a multi-band dual-polarized antenna, the multi-band dual-polarized antenna comprising:

[0006] Four layers of patches are stacked, the four layers of patches are respectively a first radiation patch, a second radiation patch, a third radiation patch and a ground patch, the second radiation patch is arranged between the first radiation patch and the third radiation patch, the third radiation patch is arranged between the second radiation patch and the ground patch; a first dielectric substrate is arranged between the first radiation patch and the second radiation patch, a second dielectric substrate is arranged between the second radiation patch and the third radiation patch, and a third dielectric substrate is arranged between the third radiation patch and the ground patch;

[0007] The two feed metallized vias respectively pass through the ground patch, the third radiation patch, the second radiation patch and the first radiation patch but do not contact each other, and respectively maintain a first clearance area with the third radiation patch, the second radiation patch and the first radiation patch, and maintain a second clearance area with the ground patch, wherein the second clearance area is much larger than the first clearance area.

[0008] Optionally, a straight line from a first feed metallized via hole on a first patch to a center of the first patch and a straight line from a second feed metallized via hole on the first patch to a center of the first patch are perpendicular to each other, and a distance from the first feed metallized via hole to the center of the first patch is equal to a distance from the second feed metallized via hole to the center of the first patch;

[0009] The first patch is any one of the four layers of patches, and the first feed metallized via hole and the second feed metallized via hole are two feed metallized via holes penetrating the first patch.

[0010] Optionally, the outer ring radius of the second radiation patch is greater than the outer ring radius of the first radiation patch;

[0011] The outer ring radius of the third radiation patch is greater than the outer ring radius of the second radiation patch;

[0012] The outer ring radius of the ground patch is greater than the outer ring radius of the third radiation patch.

[0013] Optionally, the first radiation patch is a ring-shaped radiation patch, the second radiation patch is a ring-shaped radiation patch, and the third radiation patch is a circular radiation patch.

[0014] Optionally, center lines of the first radiation patch, the second radiation patch, the third radiation patch and the ground patch coincide with each other.

[0015] Optionally, the second radiation patch includes a ring patch and a first ring parasitic patch, the first ring parasitic patch is placed outside the ring patch, and the radius of the first ring parasitic patch is greater than the radius of the ring patch.

[0016] Optionally, the third radiation patch includes a circular patch and a second annular parasitic patch, and the second annular parasitic patch is placed outside the circular patch.

[0017] Optionally, four patches are arranged between the second annular parasitic patch and the circular patch, and the intervals between any two adjacent patches are equal.

[0018] Optionally, the dielectric constants of the first dielectric substrate, the second dielectric substrate and the third dielectric substrate are all 3.66.

[0019] Optionally, the operating frequency band range of the first radiation patch includes n259 and n260;

[0020] And / or, the operating frequency band adjustment range of the second radiation patch includes n259 and n260;

[0021] And / or, the operating frequency band adjustment range of the third radiation patch includes n257 and n258.

[0022] Optionally, the thickness of the first dielectric substrate is 0.338 mm;

[0023] And / or, the thickness of the second dielectric substrate is 0.168 mm;

[0024] And / or, the thickness of the third dielectric substrate is 0.338 mm.

[0025] Optionally, the inner ring radius of the first radiation patch is in the range of 0.3 mm to 0.9 mm, and the outer ring radius of the first radiation patch is in the range of 1.2 mm to 2.2 mm.

[0026] Optionally, the inner ring radius of the annular patch is in the range of 0.3 mm to 0.9 mm, and the outer ring radius of the annular patch is in the range of 1.1 mm to 2.1 mm;

[0027] The value range of the outer ring radius of the first annular parasitic patch is 1.6 mm-2.7 mm.

[0028] Optionally, the spacing between the annular patch and the first annular parasitic patch is 0.05 mm.

[0029] Optionally, the radius of the circular patch ranges from 1.5 mm to 2.5 mm;

[0030] The value range of the outer ring radius of the second annular parasitic patch is 2 mm-3 mm.

[0031] Optionally, the length of the patch arranged between the second annular parasitic patch and the circular patch is 0.24 mm;

[0032] And / or, the spacing between the second annular parasitic patch and the circular patch is 0.05 mm.

[0033] Optionally, the diameter of the feeding metallized via hole is 0.36 mm, and the diameter of the first clearance area is 0.4 mm.

[0034] The multi-band dual-polarized antenna of the embodiment of the present application comprises: four layers of patches arranged in a stacked manner, the four layers of patches are respectively a first radiation patch, a second radiation patch, a third radiation patch and a ground patch, the second radiation patch is arranged between the first radiation patch and the third radiation patch, and the third radiation patch is arranged between the second radiation patch and the ground patch; a first dielectric substrate is arranged between the first radiation patch and the second radiation patch, a second dielectric substrate is arranged between the second radiation patch and the third radiation patch, and a third dielectric substrate is arranged between the third radiation patch and the ground patch; two feed metallized vias respectively pass through the ground patch, the third radiation patch, the second radiation patch and the first radiation patch but do not contact, and respectively maintain a first clearance area with the third radiation patch, the second radiation patch and the first radiation patch, and maintain a second clearance area with the ground patch, wherein the second clearance area is much larger than the first clearance area. The antenna includes a first radiation patch, a second radiation patch, a third radiation patch and a ground patch which are stacked. The first radiation patch, the second radiation patch and the third radiation patch can work in different frequency bands. Two feeding metallized vias pass through the three layers of radiation patches but do not touch each other, and electromagnetic coupling is used to realize orthogonal feeding of the dual feeding points of each layer of radiation patches, thereby realizing dual polarization. Therefore, the antenna can not only communicate effectively in multiple frequency bands, but also realize dual polarization applications, so as to better meet the actual mobile communication needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 is a schematic diagram of a multi-band dual-polarization antenna provided in an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of a second radiating antenna provided in an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of a third radiating antenna provided in an embodiment of the present application;

[0039] Figure 4 is a schematic diagram of a first radiating antenna provided in an embodiment of the present application;

[0040] Figure 5 It is a schematic diagram of feed point matching and isolation of a multi-band dual-polarization simulation antenna provided in an embodiment of the present application;

[0041] Figure 6 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 25.5 GHz;

[0042] Figure 7 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 25.5 GHz;

[0043] Figure 8 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 26.00 GHz;

[0044] Fig. 9 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulation antenna provided in the embodiment of the present application at 26.00 GHz;

[0045] Fig.10 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 27.00 GHz;

[0046] Fig.11 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulation antenna provided in the embodiment of the present application at 27.00 GHz;

[0047] Fig.12 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 37.5 GHz;

[0048] Fig.13 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulation antenna provided in the embodiment of the present application at 37.5 GHz;

[0049] Fig.14 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 39.5 GHz;

[0050] Fig.15 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 39.5 GHz;

[0051] Fig.16 It is the radiation pattern of the XZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 42.00 GHz;

[0052] Fig.17 It is the radiation pattern of the YZ cross section of the multi-band dual-polarization simulated antenna provided in the embodiment of the present application at 42.00 GHz. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] The present application embodiment provides a multi-band dual-polarization antenna. Figure 1 , Figure 1 is a multi-band dual-polarization antenna diagram provided in an embodiment of the present application, such as Figure 1 As shown, the multi-band dual-polarization antenna includes:

[0055] Four layers of patches are stacked, the four layers of patches are respectively a first radiation patch 1, a second radiation patch 2, a third radiation patch 3 and a ground patch 4, the second radiation patch 2 is arranged between the first radiation patch 1 and the third radiation patch 3, the third radiation patch 3 is arranged between the second radiation patch 2 and the ground patch 4; a first dielectric substrate 5 is arranged between the first radiation patch 1 and the second radiation patch 2, a second dielectric substrate 6 is arranged between the second radiation patch 2 and the third radiation patch 3, and a third dielectric substrate 7 is arranged between the third radiation patch 3 and the ground patch 4;

[0056] The two feeding metallized vias respectively pass through the ground patch 4, the third radiation patch 3, the second radiation patch 2 and the first radiation patch 1 but do not touch each other, and respectively maintain a first clearance area with the third radiation patch 3, the second radiation patch 2 and the first radiation patch 1, and maintain a second clearance area with the ground patch 4, wherein the second clearance area is much larger than the first clearance area.

[0057] In one embodiment, four layers of patches of the multi-band dual-polarized antenna are stacked, and from top to bottom are the first radiation patch 1, the second radiation patch 2, the third radiation patch 3 and the ground patch 4, and each radiation patch can work in a different frequency band range. In addition, a dielectric substrate is provided between each layer of patches, and the material of the dielectric substrate can be a high-frequency and low-loss circuit board material. Specifically, a first dielectric substrate 5 is provided between the first radiation patch 1 and the second radiation patch 2, and the first radiation patch is printed on the first dielectric substrate 5; a second dielectric substrate 6 is provided between the second radiation patch 2 and the third radiation patch 3, and the second radiation patch is printed on the second dielectric substrate 6; a third dielectric substrate 7 is provided between the third radiation patch 3 and the ground patch 4, and the third radiation patch 3 is printed on the third dielectric substrate 7.

[0058] Continue to see Figure 1, the two feed metallized vias respectively pass through the ground patch 4, the third radiation patch 3, the second radiation patch 2 and the first radiation patch 1 but do not touch, and respectively maintain a first clearance area with the third radiation patch 3, the second radiation patch 2 and the first radiation patch 1, and maintain a second clearance area with the ground patch 4. It should be noted that the clearance area between the two feed metallized vias and the ground patch is much larger than the clearance area between the two feed metallized vias and each radiation patch, which can avoid electromagnetic coupling and interference and ensure the performance and stability of the antenna.

[0059] In this embodiment, the antenna includes a first radiation patch, a second radiation patch, a third radiation patch and a ground patch which are stacked. The first radiation patch, the second radiation patch and the third radiation patch can work in different frequency bands. Two feeding metallized vias pass through the three layers of radiation patches but do not touch each other, and electromagnetic coupling is used to realize orthogonal feeding of the dual feeding points of each layer of radiation patches, thereby realizing dual polarization. Therefore, the antenna can not only communicate effectively in multiple frequency bands, but also realize dual polarization applications, so as to better meet the actual mobile communication needs.

[0060] Optionally, a straight line from a first feed metallized via hole on a first patch to a center of the first patch and a straight line from a second feed metallized via hole on the first patch to a center of the first patch are perpendicular to each other, and a distance from the first feed metallized via hole to the center of the first patch is equal to a distance from the second feed metallized via hole to the center of the first patch;

[0061] The first patch is any one layer of the four layers of patches, and the first feed metallized via hole and the second feed metallized via hole are two feed metallized via holes arranged on the first patch.

[0062] In one embodiment, two feed metallized vias pass through two midlines perpendicularly intersecting each layer of radiation patches but do not touch each other, and the feeding points formed by the two feed metallized vias on each layer of radiation patches are at the same distance from the center of each layer of radiation patches.

[0063] In this implementation, dual feed points are used and the feed points are 90 degrees orthogonal to achieve dual polarization. For example, the TM01 and TM10 modes radiated by the two feeding ports can form two orthogonal components in the radiation direction of the patch. By selecting an appropriate excitation frequency, the two modes can be excited at the same time to obtain a dual-polarized radiation field, which is beneficial to improving the communication quality, system capacity and spectrum utilization of the antenna.

[0064] Optionally, the outer ring radius of the second radiation patch 2 is greater than the outer ring radius of the first radiation patch 1;

[0065] The outer ring radius of the third radiation patch 3 is greater than the outer ring radius of the second radiation patch 2;

[0066] The outer ring radius of the ground patch 4 is greater than the outer ring radius of the third radiation patch 3 .

[0067] In one embodiment, in the four layers of patches stacked together, the area of ​​the patches gradually increases from top to bottom. Generally, the size of the patch is determined according to the operating frequency band of the patch. In the present application, the operating frequency bands of the first radiation patch and the second radiation patch are greater than the operating frequency band of the third radiation patch (this will be described in detail in subsequent embodiments), so the operating wavelengths of the first radiation patch and the second radiation patch are smaller than the operating wavelength of the third radiation patch, and the smaller the operating wavelength, the smaller the patch size. In addition, the size of the ground patch is generally larger, because the larger the size of the ground patch, the higher its radiation efficiency is generally. Large-sized ground patches can provide more grounding area, thereby reducing the loss of radiation power.

[0068] Optionally, the first radiation patch 1 is a ring-shaped radiation patch, the second radiation patch 2 is a ring-shaped radiation patch, and the third radiation patch 3 is a circular radiation patch.

[0069] In one embodiment, the first radiation patch 1 may be a ring radiation patch, the second radiation patch 2 may be a ring radiation patch, and the third radiation patch 3 may be a circular radiation patch. The radiation patch is circular or ring-shaped, so that the size and structure of the patch are easy to adjust, and the operating frequency of the antenna can be adjusted by changing parameters such as diameter or thickness.

[0070] Optionally, center lines of the first radiation patch 1 , the second radiation patch 2 , the third radiation patch 3 and the ground patch 4 coincide with each other.

[0071] In one embodiment, the center lines of the first radiation patch 1, the second radiation patch 2, the third radiation patch 3 and the ground patch 4 coincide with each other. In this embodiment, the coincidence of the center lines can help optimize the radiation characteristics and frequency response of the antenna. By accurately controlling the position and overlap of each layer of patches, better frequency matching and radiation characteristics can be achieved, thereby improving the performance of the antenna.

[0072] Optionally, the second radiation patch 2 includes a ring patch 21 and a first ring parasitic patch 22 , wherein the first ring parasitic patch 22 is placed outside the ring patch 21 , and a radius of the first ring parasitic patch 22 is greater than a radius of the ring patch 21 .

[0073] In one embodiment, see Figure 2The second radiation patch 2 can be a ring radiation patch, which can specifically include a ring patch 21 and a first ring parasitic patch 22. The ring patch 21 and the first ring parasitic patch 22 work together to achieve frequency regulation, radiation function, radiation directionality control and antenna performance improvement.

[0074] Optionally, the third radiation patch 3 includes a circular patch 31 and a second annular parasitic patch 32 , and the second annular parasitic patch 32 is placed outside the circular patch 31 .

[0075] In one embodiment, continue to refer to Figure 3 The third radiation patch 3 can be a circular radiation patch, which can specifically include a circular patch 31 and a second circular parasitic patch 32. The circular patch 31 and the second circular parasitic patch 32 work together to achieve frequency regulation, radiation function, radiation directionality control and antenna performance improvement.

[0076] Optionally, four patches 33 are arranged between the second annular parasitic patch 32 and the circular patch 31 , and the intervals between any two adjacent patches 33 are equal.

[0077] In one embodiment, continue to refer to Figure 3 Between the second annular parasitic patch 32 and the circular patch 31, four patches 33 of a certain width are arranged at equal intervals along two lines intersecting vertically at an angle of 45 degrees to connect the second annular parasitic patch 32 with the circular patch 31. These four patches can broaden the working bandwidth of the antenna and improve the working impedance matching.

[0078] The present application adopts a laminated structure, and the thickness of the upper dielectric substrate will have a certain influence on the radiation characteristics of the lower antenna patch. The thicker the dielectric substrate, the worse the radiation characteristics of the lower antenna patch, but at the same time, the frequency band width of the upper antenna patch will also increase, so it is necessary to determine the thickness of the dielectric substrate in combination with the overall requirements of the working frequency band bandwidth and radiation efficiency of each antenna patch. In addition, the selection of the dielectric constant of the dielectric substrate is also very important. The lower the dielectric constant, the closer it is to the characteristics of air, the better the radiation characteristics of the antenna, and the better the frequency band width. Considering that the present application adopts a laminated structure, if the area of ​​the dielectric substrate is increased, the working frequency band span is larger, and the use of an overly large dielectric board for the low-frequency band antenna patch may have an adverse effect on the radiation characteristics of the high-frequency band antenna patch, so it is necessary to weigh the advantages and disadvantages of various aspects to select the dielectric substrate material.

[0079] In order to obtain a more optimal technical effect in practical application, the applicant has determined the numerical range of various parameters of the multi-band dual-polarization antenna through a large amount of experimental data, thereby reducing the size of the antenna while ensuring the multi-band and dual-polarization performance of the antenna, as follows:

[0080] Optionally, the dielectric constants of the first dielectric substrate 5 , the second dielectric substrate 6 and the third dielectric substrate 7 are all 3.66.

[0081] Optionally, the operating frequency band of the first radiation patch 1 includes n259 and n260;

[0082] And / or, the operating frequency band adjustment range of the second radiation patch 2 includes n259 and n260;

[0083] And / or, the operating frequency band adjustment range of the third radiation patch 3 includes n257 and n258.

[0084] Optionally, the thickness of the first dielectric substrate 5 is 0.338 mm;

[0085] And / or, the thickness of the second dielectric substrate 6 is 0.168 mm;

[0086] And / or, the thickness of the third dielectric substrate 7 is 0.338 mm.

[0087] See also Figure 2 , Figure 3 and Figure 4 ,in:

[0088] Optionally, the inner ring diameter D6 of the first radiation patch 1 has a value range of 0.3 mm to 0.9 mm, and the outer ring diameter D7 of the first radiation patch 1 has a value range of 1.2 mm to 2.2 mm.

[0089] Optionally, the inner ring diameter D5 of the annular patch 21 has a value range of 0.3 mm-0.9 mm, and the outer ring diameter D4 of the annular patch 21 has a value range of 1.1 mm-2.1 mm;

[0090] The outer ring diameter D3 of the first annular parasitic patch 22 has a value ranging from 1.6 mm to 2.7 mm.

[0091] Optionally, a distance L3 between the annular patch 21 and the first annular parasitic patch 22 is 0.05 mm.

[0092] Optionally, the diameter D2 of the circular patch 31 ranges from 1.5 mm to 2.5 mm;

[0093] The value range of the outer ring diameter D1 of the second annular parasitic patch 32 is 2 mm-3 mm.

[0094] Optionally, the length L2 of the patch 33 arranged between the second annular parasitic patch 32 and the circular patch 31 is 0.24 mm;

[0095] And / or, a distance L1 between the second annular parasitic patch 32 and the circular patch 31 is 0.05 mm.

[0096] Optionally, the diameter D6 of the feeding metallized via hole is 0.36 mm, and the diameter D5 of the first clearance area is 0.4 mm.

[0097] Exemplarily, a set of simulation results of a multi-band dual-polarization antenna is given below, wherein Table 1 is a set of dimensions used in the simulation scheme:

[0098] Table 1

[0099] category D1 D2 D3 D4 D5 D6 Dimensions (mm) 2.61 2.06 2.1 1.6 0.6 0.6 category D7 L1 L2 L3 R1 R2 Dimensions (mm) 1.7 0.05 0.24 0.05 0.4 0.36

[0100] See also Figure 5 In the multi-band dual-polarization simulation antenna, the return losses of the two feed points in the working frequency band are S11 and S22, and the isolation between the feed points is S12. The results show that the multi-band dual-polarization simulation antenna can work in the 25.3GHz-27.1GHz and 37.2GHz-42.4GHz bands, S11 / S22 is less than 10dB, and the isolation S12 between the two feed points is distributed from 12dB to 36dB, involving the n257, n258, n259, and n260 bands and realizing dual polarization.

[0101] In order to study the radiation characteristics of the multi-band dual-polarization simulation antenna, the applicant selected six frequency points: 25.5 GHz, 26.00 GHz, 27.00 GHz, 37.5 GHz, 39.5 GHz, and 42.00 GHz for simulation.

[0102] The antenna's radiation pattern at 25.5 GHz is as follows: Figure 6 and Figure 7 As shown, in Figure 6 In the XZ section, the 3dB beam width is 88°. Figure 7 In the middle, the 3dB beamwidth in the YZ section is 93°, the gain in the normal direction is 5.05dBi, and the cross-polarization suppression is more than 20dB;

[0103] The directional pattern of the antenna at 26.00 GHz is as follows Figure 8 and Fig. 9 As shown, in Figure 8 In the XZ section, the 3dB beamwidth is 86°. Fig. 9 In the middle, the 3dB beamwidth in the YZ section is 92°, the gain in the normal direction is 5.2dBi, and the cross-polarization suppression is more than 20dB;

[0104] The antenna's radiation pattern at 27.00 GHz is as follows: Fig.10 and Fig.11 As shown, in Fig.10In the XZ section, the 3dB beam width is 84°. Fig.11 In the middle, the 3dB beamwidth in the YZ section is 91°, the gain in the normal direction is 5.6dBi, and the cross-polarization suppression is more than 17dB;

[0105] The antenna's radiation pattern at 37.5 GHz is as follows: Fig.12 and Fig.13 As shown, in Fig.12 In the XZ section, the 3dB beam width is 88°. Fig.13 In the middle, the 3dB beamwidth in the YZ section is 97°, the gain in the normal direction is 4.5dBi, and the cross-polarization suppression is more than 15dB;

[0106] The antenna's radiation pattern at 39.5 GHz is as follows: Fig.14 and Fig.15 As shown, in Fig.14 In the XZ section, the 3dB beam width is 83°. Fig.15 In the middle, the 3dB beamwidth in the YZ section is 91°, the gain in the normal direction is 5.3dBi, and the cross-polarization suppression is more than 27dB;

[0107] The antenna's radiation pattern at 42.00 GHz is as follows: Fig.16 and Fig.17 As shown, in Fig.16 In the XZ section, the 3dB beamwidth is 109°. Fig.17 The 3dB beamwidth in the YZ section is 92°, the gain in the normal direction is 3.7dBi, and the cross-polarization suppression is more than 17dB.

[0108] It can be seen that the multi-band dual-polarization simulation antenna has better radiation characteristics.

[0109] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0110] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A multi-band dual-polarization antenna, characterized in that: The multi-band dual-polarization antenna comprises: Four layers of patches are stacked, the four layers of patches are respectively a first radiation patch, a second radiation patch, a third radiation patch and a ground patch, the second radiation patch is arranged between the first radiation patch and the third radiation patch, the third radiation patch is arranged between the second radiation patch and the ground patch; a first dielectric substrate is arranged between the first radiation patch and the second radiation patch, a second dielectric substrate is arranged between the second radiation patch and the third radiation patch, and a third dielectric substrate is arranged between the third radiation patch and the ground patch; The two feed metallized vias respectively pass through the ground patch, the third radiation patch, the second radiation patch and the first radiation patch but do not contact each other, and respectively maintain a first clearance area with the third radiation patch, the second radiation patch and the first radiation patch, and maintain a second clearance area with the ground patch, wherein the second clearance area is much larger than the first clearance area.

2. The multi-band dual-polarization antenna according to claim 1, characterized in that: A straight line from a first feed metallized via on a first patch to the center of the first patch is perpendicular to a straight line from a second feed metallized via on the first patch to the center of the first patch, and a distance from the first feed metallized via to the center of the first patch is equal to a distance from the second feed metallized via to the center of the first patch; The first patch is any one of the four layers of patches, and the first feed metallized via hole and the second feed metallized via hole are two feed metallized via holes penetrating the first patch.

3. The multi-band dual-polarization antenna according to claim 1, characterized in that: The outer ring radius of the second radiation patch is greater than the outer ring radius of the first radiation patch; The outer ring radius of the third radiation patch is greater than the outer ring radius of the second radiation patch; The outer ring radius of the ground patch is greater than the outer ring radius of the third radiation patch.

4. The multi-band dual-polarization antenna according to any one of claims 1 to 3, characterized in that: The first radiation patch is a ring radiation patch, the second radiation patch is a ring radiation patch, and the third radiation patch is a circular radiation patch.

5. The multi-band dual-polarization antenna according to any one of claims 1 to 3, characterized in that: The center lines of the first radiation patch, the second radiation patch, the third radiation patch and the ground patch coincide with each other.

6. The multi-band dual-polarization antenna according to any one of claims 1 to 3, characterized in that: The second radiation patch includes a ring patch and a first ring parasitic patch, the first ring parasitic patch is placed outside the ring patch, and the radius of the first ring parasitic patch is greater than the radius of the ring patch.

7. The multi-band dual-polarization antenna according to any one of claims 1 to 3, characterized in that: The third radiation patch includes a circular patch and a second annular parasitic patch, and the second annular parasitic patch is placed outside the circular patch.

8. The multi-band dual-polarization antenna according to claim 7, characterized in that: Four patches are arranged between the second annular parasitic patch and the circular patch, and the spacing between any two adjacent patches is equal.

9. The multi-band dual-polarization antenna according to claim 1, characterized in that: The dielectric constants of the first dielectric substrate, the second dielectric substrate and the third dielectric substrate are all 3.

66.

10. The multi-band dual-polarization antenna according to claim 1, characterized in that: The operating frequency band of the first radiation patch includes n259 and n260; And / or, the operating frequency band adjustment range of the second radiation patch includes n259 and n260; And / or, the operating frequency band adjustment range of the third radiation patch includes n257 and n258.

11. The multi-band dual-polarization antenna according to claim 10, characterized in that: The thickness of the first dielectric substrate is 0.338 mm; And / or, the thickness of the second dielectric substrate is 0.168 mm; And / or, the thickness of the third dielectric substrate is 0.338 mm.

12. The multi-band dual-polarization antenna according to claim 1, characterized in that: The value range of the inner ring radius of the first radiation patch is 0.3 mm to 0.9 mm, and the value range of the outer ring radius of the first radiation patch is 1.2 mm to 2.2 mm.

13. The multi-band dual-polarization antenna according to claim 6, characterized in that: The inner ring radius of the annular patch is in the range of 0.3 mm to 0.9 mm, and the outer ring radius of the annular patch is in the range of 1.1 mm to 2.1 mm; The value range of the outer ring radius of the first annular parasitic patch is 1.6 mm-2.7 mm.

14. The multi-band dual-polarization antenna according to claim 6, characterized in that: The distance between the annular patch and the first annular parasitic patch is 0.05 mm.

15. The multi-band dual-polarization antenna according to claim 7, characterized in that: The radius of the circular patch ranges from 1.5 mm to 2.5 mm; The value range of the outer ring radius of the second annular parasitic patch is 2 mm-3 mm.

16. The multi-band dual-polarization antenna according to claim 7, characterized in that: The length of the patch arranged between the second annular parasitic patch and the circular patch is 0.24 mm; And / or, the spacing between the second annular parasitic patch and the circular patch is 0.05 mm.

17. The multi-band dual-polarization antenna according to any one of claims 1 to 3, characterized in that: The diameter of the feeding metallized via hole is 0.36 mm, and the diameter of the first clearance area is 0.4 mm.

Images