Coprime Aperture Antenna Based on Ring Dielectric Resonator and Patch

Abstract

The present invention provides a common-aperture antenna based on a ring dielectric resonator and a patch, which relates to the technical field of antennas and includes a ring dielectric antenna, a patch antenna, and a feeding lattice. The feeding lattice includes a first feeding point, a second feeding point, a third feeding point, and a fourth feeding point. The first feeding point and the second feeding point are differential-excited dielectric ring resonator antennas, and the third feeding point and the fourth feeding point are differential-excited metal patches. The patch is located in the internal cavity formed in the ring dielectric antenna. When the first feeding point and the second feeding point are fed, electromagnetic waves are radiated to the surrounding through the ring dielectric antenna. After the electromagnetic waves released by the first feeding point and the second feeding point generate resonance, the ring dielectric antenna is activated. When the third feeding point and the fourth feeding point are fed and the signals form resonance, the patch antenna works. This application has the effect of reducing the deterioration of performance caused by antenna coupling.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and in particular, to a common-aperture antenna based on a ring dielectric resonator and a patch. Background Art

[0002] The general structure of a common-aperture antenna is that multiple antennas with different frequency band functions are integrated under one aperture plane. By selecting a suitable antenna unit structure, designing a feed network with excellent performance, and arranging a reasonable overall framework, the mutual influence and interference between multiple antennas can be reduced, so that the performance of each part of the common-aperture antenna when coexisting is highly consistent with the performance when each exists alone, and finally multiple antennas with different functions can work independently and completely. Common antenna types such as microstrip antennas, dipole antennas, waveguide slots, helical antennas, and horn antennas can all be used as the unit structure of the common-aperture antenna.

[0003] With the development of communication technologies, multiple communication systems such as 2G, 3G, 4G, and now 5G coexist. The site resources are facing an increasingly tight situation. Designing a common-aperture base station antenna can greatly reduce the number of antennas, reduce the installation space, and lower the operator's cost; satellite communication requires integrating multiple antennas on a satellite to meet the communication needs for different functions and different objects, achieving the purpose of increasing communication capacity and improving the aperture utilization rate. However, in the prior art, when two antennas share an aperture, there are defects such as performance deterioration caused by antenna coupling, and there is room for improvement. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a common-aperture antenna based on a ring dielectric resonator and a patch.

[0005] A common-aperture antenna based on a ring dielectric resonator and a patch according to the present invention includes a ring dielectric antenna, a patch antenna, and a feed lattice. The feed lattice includes a first feed point, a second feed point, a third feed point, and a fourth feed point. The first feed point and the second feed point are arranged on the ring dielectric antenna, the third feed point and the fourth feed point are arranged on the patch antenna. The first feed point and the second feed point are differential-excited dielectric ring resonator antennas, and the third feed point and the fourth feed point are differential-excited metal patches; the patch is located in the internal cavity formed in the ring dielectric antenna;

[0006] Wherein, when the first feed point and the second feed point are fed, electromagnetic waves are radiated to the surrounding through the ring dielectric antenna. After the electromagnetic waves released by the first feed point and the second feed point resonate, the ring dielectric antenna is activated. When the third feed point and the fourth feed point are fed and the signals resonate, the patch antenna works.

[0007] Preferably, the annular dielectric antenna surrounds the patch antenna on its circumferential side.

[0008] Preferably, the included angle between the line connecting the first feeding point and the second feeding point and the line connecting the third feeding point and the fourth feeding point is 90°.

[0009] Preferably, the distance between the first feeding point and the second feeding point is 10.8 mm.

[0010] Preferably, the distance between the third feeding point and the fourth feeding point is 3.5 mm.

[0011] Preferably, the inner diameter of the annular dielectric antenna is 5.1 mm, the outer diameter is 9.5 mm, and the height is 3.5 mm.

[0012] Preferably, the length of the patch is 6.2 mm, the width is 4.8 mm, and the position height is 0.813 mm.

[0013] Preferably, both the first feeding point and the second feeding point include a connected feeding cylinder and a feeding ring. The radius of the feeding cylinder is 0.1 mm, the height is 2.5 mm, the outer diameter of the upper part of the feeding ring is 0.2 mm, and the outer diameter of the lower part of the feeding ring is 0.25 mm.

[0014] Preferably, the radius of the cylindrical part of the third feeding point and the fourth feeding point is 0.1 mm, the height is 0.813 mm, and the outer diameter of its ring is 0.2 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Another patch antenna is designed at a local position in the inner ring of a relatively large ring dielectric antenna. Generally, the area of the local position occupied by one antenna is much smaller than the aperture area occupied by the other antenna. Due to the huge size difference or reasonable spatial layout, the influence of the antenna located at the local position on the existing antenna or antenna array can be ignored, so as to achieve the purpose of sharing the aperture by two antennas. The structure of the present invention is compact, and a common-aperture antenna is designed using a limited and efficient space, which overcomes the performance deterioration caused by antenna coupling to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more obvious:

[0017] Figure 1 It is a schematic structural diagram of a common-aperture antenna mainly embodying the present invention based on a ring dielectric resonator and a patch;

[0018] Figure 2This application mainly shows a schematic diagram of a common-aperture antenna based on a ring dielectric resonator and a patch;

[0019] Figure 3 It is the differential reflection coefficient parameter of the circular-ring dielectric resonator antenna at 12.3 GHz;

[0020] Figure 4 It is the radiation pattern of the antenna in the xoz plane at 12.3 GHz;

[0021] Figure 5 It is the radiation pattern of the antenna in the yoz plane at 12.3 GHz;

[0022] Figure 6 Shown are the differential reflection coefficient parameters of the patch antenna at 27 GHz;

[0023] Figure 7 It is the radiation pattern of the antenna in the xoz plane at 27 GHz;

[0024] Figure 8 It is the radiation pattern of the antenna in the yoz plane at 27 GHz.

[0025] In the figure: 1. Circular-ring dielectric antenna; 2. Patch antenna; 3. First feeding point; 4. Second feeding point; 5. Third feeding point; 6. Fourth feeding point. Detailed implementation manners

[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0027] Please refer to Figure 1-8 , the present invention provides a technical solution:

[0028] Referring to Figure 1 , the common-aperture antenna based on a ring dielectric resonator and a patch includes a circular-ring dielectric antenna 1, a patch antenna 2, and a feeding lattice. It should be noted that the inner diameter of the circular-ring dielectric antenna 1 is 5.1 mm, the outer diameter is 9.5 mm, and the height is 3.5 mm, and the circular-ring dielectric antenna 1 is a low-frequency circular-ring dielectric antenna. An internal cavity is formed in the circular-ring dielectric antenna 1, the internal cavity is circular, the patch antenna 2 is installed in the internal cavity, the patch antenna 2 is surrounded by the circular-ring dielectric antenna 1, and the patch antenna 2 is a high-frequency patch antenna 2. The length of the patch antenna 2 is 6.2 mm, the width is 4.8 mm, and the position height is 0.813 mm.

[0029] In the embodiment of the present application, first, based on a low-frequency loop dielectric resonator, a high-frequency patch antenna 2 is placed at the geometric center of the low-frequency loop dielectric antenna, and an excitation is applied. Due to a certain degree of occlusion between the high-frequency and low-frequency antennas, coupling occurs between the high-frequency and low-frequency antennas, resulting in distortion of the radiation pattern.

[0030] Referring to Figure 1 and Figure 2 , the feeding lattice includes a first feeding point 3, a second feeding point 4, a third feeding point 5, and a fourth feeding point 6. The first feeding point 3 and the second feeding point 4 are installed on the annular dielectric antenna 1 and are differential-excited dielectric ring resonator antennas. The third feeding point 5 and the fourth feeding point 6 are installed on the patch antenna 2 and are differential-excited metal patches. The first feeding point 3 and the second feeding point 4 are differential-excited dielectric ring resonator antennas, and the third feeding point 5 and the fourth feeding point 6 are differential-excited metal patches.

[0031] The included angle between the connection line of the first feeding point 3 and the second feeding point 4 and the connection line of the third feeding point 5 and the fourth feeding point 6 is 90°. The distance between the first feeding point 3 and the second feeding point 4 is 10.8 mm. The distance between the third feeding point 5 and the fourth feeding point 6 is 3.5 mm. Both the first feeding point 3 and the second feeding point 4 include a connected feeding cylinder and a feeding ring. The radius of the feeding cylinder is 0.1 mm, and the height is 2.5 mm. The outer diameter of the upper part of the feeding ring is 0.2 mm, and the outer diameter of the lower part of the feeding ring is 0.25 mm. The radius of the cylindrical part of the third feeding point 5 and the fourth feeding point 6 is 0.1 mm, and the height is 0.813 mm, and the outer diameter of its ring is 0.2 mm. Among them, when the first feeding point 3 and the second feeding point 4 are fed, electromagnetic waves are radiated to the surrounding through the annular dielectric antenna 1. After the electromagnetic waves released by the first feeding point 3 and the second feeding point 4 resonate, the annular dielectric antenna 1 is activated. When the third feeding point 5 and the fourth feeding point 6 are fed, the signal forms a resonance and then the patch antenna 2 works.

[0032] After testing, the antenna gain effect is better, and it is realized that there is no great influence on the antenna performance before and after the common aperture. Let the space rectangular coordinate system o-xyz include: the origin o, the x-axis, the y-axis, and the z-axis. As Figure 3 shown is the differential reflection coefficient parameter of the ring dielectric resonator antenna of the antenna at 12.3 GHz, Figure 4 is the radiation pattern of the antenna in the xoz plane at 12.3 GHz, Figure 5 is the radiation pattern of the antenna in the yoz plane at 12.3 GHz, Figure 6 shown is the differential reflection coefficient parameter of the patch antenna 2 of the antenna at 27 GHz, Figure 7 is the radiation pattern of the antenna in the xoz plane at 27 GHz, Figure 8 is the radiation pattern of the antenna in the yoz plane at 27 GHz.

[0033] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A common-aperture antenna based on a ring dielectric resonator and a patch, characterized in that, It includes a ring dielectric antenna (1), a patch antenna (2), and a feeding lattice. The feeding lattice includes a first feeding point (3), a second feeding point (4), a third feeding point (5), and a fourth feeding point (6). The first feeding point (3) and the second feeding point (4) are arranged on the ring dielectric antenna (1), the third feeding point (5) and the fourth feeding point (6) are arranged on the patch antenna (2). The first feeding point (3) and the second feeding point (4) are differential-excited dielectric ring resonator antennas, and the third feeding point (5) and the fourth feeding point (6) are differential-excited metal patches. The patch is located in the internal cavity formed in the ring dielectric antenna (1). Wherein, when the first feeding point (3) and the second feeding point (4) are fed, electromagnetic waves are radiated to the surrounding through the ring dielectric antenna (1). After the electromagnetic waves released by the first feeding point (3) and the second feeding point (4) generate resonance, the ring dielectric antenna (1) is activated. When the third feeding point (5) and the fourth feeding point (6) are fed and the signals generate resonance, the patch antenna (2) works.

2. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, characterized in that, The ring dielectric antenna (1) surrounds the circumferential side of the patch antenna (2).

3. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, wherein The included angle between the connection line of the first feeding point (3) and the second feeding point (4) and the connection line of the third feeding point (5) and the fourth feeding point (6) is 90°.

4. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, characterized in that, The distance between the first feeding point (3) and the second feeding point (4) is 10.8 mm.

5. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, characterized in that The distance between the third feeding point (5) and the fourth feeding point (6) is 3.5 mm.

6. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, wherein, The inner diameter of the ring dielectric antenna (1) is 5.1 mm, the outer diameter is 9.5 mm, and the height is 3.5 mm.

7. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, wherein The length of the patch antenna (2) is 6.2 mm, the width is 4.8 mm, and the position height is 0.813 mm.

8. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, characterized in that, Both the first feeding point (3) and the second feeding point (4) include a connected feeding cylinder and a feeding ring. The radius of the feeding cylinder is 0.1 mm and the height is 2.5 mm. The outer diameter of the upper part of the feeding ring is 0.2 mm, and the outer diameter of the lower part of the feeding ring is 0.25 mm.

9. The co-aperture antenna based on a ring dielectric resonator and a patch according to claim 1, wherein The The radius of the cylindrical part of the third feeding point (5) and the fourth feeding point (6) is 0.1 mm and the height is 0.813 mm. Its outer diameter of the ring is 0.2 mm.

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