Dual-polarized dielectric dipole antenna

Abstract

The embodiment of the utility model provides a dual-polarization dielectric dipole antenna, the antenna comprises a cross-shaped radiation unit and a guide sheet, the cross-shaped radiation unit comprises a first dielectric plate and a second dielectric plate which are in cross-shaped vertical cross connection; the feed balun circuit on the second dielectric plate crosses the side edge of the top of the first dielectric plate and is connected with the radiation arm on the same side surface of the second dielectric plate; a through hole is formed in the position, at the crossed connection position of the first dielectric plate and the second dielectric plate, of the second dielectric plate and is flatly attached to the first dielectric plate, so that the feed balun circuit on the first dielectric plate is connected to the radiation arm on the same face of the first dielectric plate through the through hole along the penetrating plane. According to the embodiment of the invention, the number of holes in the cross-shaped radiation unit is reduced, so that the antenna is simple to manufacture, and the production cost and the intermodulation distortion risk are reduced. In order to further reduce radiation unit holes, the two groups of feed balun circuits can be wound and crossed from the top, or one group of radiation arms are optimized into slot coupling feed, and coupling perforation is canceled.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of communication antenna technology, and more particularly, to dual-polarized dielectric dipole antennas. Background Art

[0002] With the development of 5G communications, multiple-input multiple-output (MIMO) technology is widely used in sub-6GHz (Sub-6GHz) base station products, in which the antenna unit (AU) is usually mounted on the radio unit (RU) through a connector or other methods (such as welding).

[0003] The antenna element can typically be a dipole of metallic material mounted on a time division duplex (TDD) radio, or a patch mounted on a dielectric material on a TDD radio. The antenna element can also be a dipole on a printed circuit board (PCB) with several parts soldered together.

[0004] Existing antenna elements have certain limitations at lower frequencies, especially in multi-band combinations at lower frequency bands. Traditional metal die-cast dipole antenna units have good performance, but they have high weight and cost for radios that integrate multiple unit antenna arrays. Patch dielectric antennas have good weight and cost, but their bandwidth is limited. PCB dipoles can balance the performance and weight of antenna elements, but they have at least three parts, and all parts usually need to be soldered and assembled together. In addition, the production process of PCB dipoles is complex, the production quality is difficult to control, and it is not easy to control intermodulation (PIM) performance.

[0005] In order to reduce size and weight, dielectric dipole antennas are becoming more and more popular. The dielectric material can be a plastic or ceramic with a lower dielectric constant. Traditional broadband dielectric antennas with Balun coupling structures usually require at least two intersecting through holes, which is difficult to achieve with an integrated structure. Even if an integrated structure is used, the mold of the dielectric part is relatively complex, and the electroplating of the circuit is also complex. If the circuit plating is not reliable, it will affect the circuit performance, such as loss and PIM deterioration. The complex structure of the broadband dielectric antenna also makes it difficult to ensure the flatness of the antenna, which will also affect the radiation performance of the antenna.

[0006] How to balance the requirements of good and stable performance, small size and weight, and easy production and manufacturing has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0007] An object of the present disclosure is to provide a dual-polarization dielectric dipole antenna to at least partially solve the above problems.

[0008] In a first aspect of the present disclosure, a dual-polarized dielectric dipole antenna is provided, comprising a cross-shaped radiating unit and a guide plate, wherein: the cross-shaped radiating unit comprises a first dielectric plate and a second dielectric plate connected in a cross-shaped vertical cross; the first dielectric plate comprises a first part and a second part separated by the second dielectric plate, and the second dielectric plate comprises a first part and a second part separated by the first dielectric plate; a first radiating arm is provided on one side of the first part of the first dielectric plate, a first feeding balun circuit is provided on the same side of the second part of the first dielectric plate, and a second radiating arm coupled to the first feeding balun circuit is provided on the other side of the second part of the first dielectric plate; a third radiating arm is provided on one side of the first part of the second dielectric plate, a second feeding balun circuit is provided on the same side of the second part of the second dielectric plate, and a second radiating arm coupled to the first feeding balun circuit is provided on the other side of the second part of the second dielectric plate A fourth radiating arm coupled to a second feeding balun circuit is provided on one side; wherein the dielectric surfaces where the first radiating arm and the third radiating arm are located intersect; the second feeding balun circuit of the second part of the second dielectric plate is connected to the third radiating arm of the first part of the second dielectric plate across the top side of the first dielectric plate; a through hole is provided in the first part of the second dielectric plate at the intersection of the first dielectric plate and the second dielectric plate, flat against the first dielectric plate, so that the plane separated by the second dielectric plate passes through the through hole, so that the first feeding balun circuit is connected to the first radiating arm along the through plane through the through hole; the guide plate is provided at the top of the cross-shaped radiating unit, and a through hole is provided at the center of the guide plate, so that the guide plate does not contact the second feeding balun circuit across the top side of the first dielectric plate.

[0009] In some embodiments, the antenna further includes a third dielectric board, the third dielectric board includes a power distribution circuit, and the power distribution circuit is connected to the first and second feeding balun circuits; the cross-shaped radiation unit is arranged on the third dielectric board.

[0010] In some embodiments, the first, second and third dielectric plates are integrally formed.

[0011] In some embodiments, the antenna further includes a grounding of a radiation arm disposed on a third dielectric board, and the first to fourth radiation arms are all connected to the grounding.

[0012] In some embodiments, the antenna further includes a metal reflector plate disposed below the third dielectric plate, and the grounding is connected to the metal reflector plate.

[0013] In some embodiments, the first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

[0014] In some embodiments, the widths of the radiation arm portions and their connections are different and gradually varying.

[0015] In some embodiments, the first and second feeding balun circuits have different widths in different sections of the feeding lines.

[0016] In a second aspect of the present disclosure, a dual-polarized dielectric dipole antenna is provided, comprising a cross-shaped radiating unit and a guide plate, wherein: the cross-shaped radiating unit comprises a first dielectric plate and a second dielectric plate connected in a cross-shaped vertical cross; the first dielectric plate comprises a first part and a second part separated by the second dielectric plate, and the second dielectric plate comprises a first part and a second part separated by the first dielectric plate; a first radiating arm is provided on one side of the first part of the first dielectric plate, a first feeding balun circuit is provided on the same side of the second part of the first dielectric plate, and a second radiating arm coupled to the first feeding balun circuit is provided on the other side of the second part of the first dielectric plate; a third radiating arm is provided on one side of the first part of the second dielectric plate, and a second feeding balun circuit is provided on the same side of the second part of the second dielectric plate. The invention relates to a method for providing a cross-shaped radiation unit, wherein the second part of the second dielectric plate is provided with a fourth radiation arm coupled with the second feeding balun circuit on the other side; wherein the first radiation arm and the third radiation arm intersect with the dielectric surface where the first radiation arm and the third radiation arm are located; the second feeding balun circuit of the second part of the second dielectric plate is connected to the third radiation arm of the first part of the second dielectric plate via the top side of the first dielectric plate; the first feeding balun circuit of the second part of the first dielectric plate is connected to the first radiation arm of the first part of the first dielectric plate via the top side of the second dielectric plate; the guide plate is arranged at the top of the cross-shaped radiation unit, and a through hole is opened at the center of the guide plate, so that the guide plate does not contact the second feeding balun circuit across the top of the first dielectric plate and the first feeding balun circuit across the top of the second dielectric plate.

[0017] In some embodiments, the antenna further includes a third dielectric board, the third dielectric board includes a power distribution circuit, and the power distribution circuit is connected to the first and second feeding balun circuits; the cross-shaped radiation unit is arranged on the third dielectric board.

[0018] In some embodiments, the first, second and third dielectric plates are integrally formed.

[0019] In some embodiments, the antenna further includes a grounding of a radiation arm disposed on a third dielectric board, and the first to fourth radiation arms are all connected to the grounding.

[0020] In some embodiments, the antenna further includes a metal reflector plate disposed below the third dielectric plate, and the grounding is connected to the metal reflector plate.

[0021] In some embodiments, the first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

[0022] In some embodiments, the widths of the radiation arm portions and their connections are different and gradually varying.

[0023] In some embodiments, the first and second feeding balun circuits have different widths in different sections of the feeding lines.

[0024] In a third aspect of the present disclosure, a dual-polarized dielectric dipole antenna is provided, comprising a cross-shaped radiating unit and a guide plate, wherein: the cross-shaped radiating unit comprises a first dielectric plate and a second dielectric plate connected in a cross-shaped vertical cross; the first dielectric plate comprises a first part and a second part separated by the second dielectric plate, and the second dielectric plate comprises a first part and a second part separated by the first dielectric plate; a first radiating arm is provided on one side of the first part of the first dielectric plate, a second radiating arm is provided on the same side of the second part, and a grounding corresponding to the second radiating arm is provided on the other side of the second part; a third radiating arm is provided on one side of the first part of the second dielectric plate, a second feeding balun circuit is provided on the same side of the second part, and a grounding circuit coupled to the second feeding balun circuit is provided on the other side of the second part a fourth radiating arm; wherein the dielectric surface where the first radiating arm and the third radiating arm are located intersects; the radiating arm portion of the first radiating arm along the cross connection of the first dielectric plate and the second dielectric plate has a portion extending to the first portion of the second dielectric plate; the radiating arm portion of the second radiating arm along the cross connection of the first dielectric plate and the second dielectric plate has a portion extending to the first portion of the second dielectric plate; the above-mentioned portions of the first radiating arm and the second radiating arm extending to the first portion of the second dielectric plate have a coupling relationship; the second feeding balun circuit of the second portion of the second dielectric plate is connected to the third radiating arm of the first portion of the second dielectric plate across the top side of the first dielectric plate; the guide plate is arranged on the top of the cross-shaped radiation unit.

[0025] In some embodiments, the antenna further includes a third dielectric plate, and the cross-shaped radiation unit is disposed on the third dielectric plate; the third dielectric plate includes a power distribution circuit, and the power distribution circuit is connected to the second radiation arm and the second feeding balun circuit.

[0026] In some embodiments, the first, second and third dielectric plates are integrally formed.

[0027] In some embodiments, the antenna also includes a ground provided on a third dielectric plate, the first, third and fourth radiating arms and the ground on the second part of the first dielectric plate are all connected to the ground on the third dielectric plate, and the second radiating arm is coupled to the ground on the second part of the first dielectric plate.

[0028] In some embodiments, the antenna further includes a metal reflective plate disposed below the third dielectric plate, and the ground on the third dielectric plate is connected to the metal reflective plate.

[0029] In some embodiments, the first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

[0030] In some embodiments, the widths of the radiation arm portions and their connections are different and vary gradually.

[0031] In some embodiments, the second feed balun circuit has different widths at different sections of the feed line.

[0032] The bipolar dielectric dipole antenna disclosed in the present invention is mainly composed of a dielectric plate and the circuit thereon. The coupling trace, the radiating arm and the power distribution circuit are all on the dielectric plate. The first dielectric plate, the second dielectric plate and the third dielectric plate are integrally formed. In this way, the dielectric part can be produced at one time through a mold. The first dielectric plate and the second dielectric plate can also be integrally formed into a cross-shaped radiating unit, and then installed on the third dielectric plate. The dielectric material can be a plastic material, or a ceramic material or other dielectric material. The mold of this antenna element is very simple, which can reduce costs, and the dielectric component manufactured in this way is easy to ensure flatness and stable performance.

[0033] The bipolar dielectric dipole antenna disclosed in the present invention has a radiation circuit only on the dielectric plate side of the cross-shaped radiation unit. The radiation arm of the antenna unit has a graded width, and the feed balun circuit can also have different bandwidths, which will increase the impedance bandwidth of the antenna. The top guide plate is mounted on the cross-shaped radiation unit, further increasing the bandwidth of the antenna.

[0034] The radiating arm in the dual-polarity dielectric dipole antenna disclosed in the present invention is divided into four parts, two parts realize +45° polarization, and the other two parts realize -45° polarization. The dual-polarization design increases the antenna bandwidth.

[0035] The number of perforations on the cross-shaped radiating unit of the bipolar dielectric dipole antenna disclosed in the present invention is reduced, making production easier and stabilizing the performance of the antenna circuit; the use of dielectric materials as the entire antenna can significantly reduce the overall weight of the antenna, and the radiating unit as a whole can realize the assembly of the various components of the antenna in a simple manner, without the need for welding or reducing the number of welding points, thereby reducing the risk of intermodulation distortion (PIM).

[0036] It should be understood that the content described in this content section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0038] Figure 1 is a three-dimensional schematic diagram of a dual-polarized dielectric dipole antenna according to an embodiment of the present disclosure;

[0039] Figure 2 Shows Figure 1 An exploded schematic diagram of a dual-polarized dielectric dipole antenna is shown;

[0040] Figure 3a Shows Figure 1 A side view of one orientation of the dual polarized dielectric dipole antenna shown;

[0041] Figure 3b for Figure 1 Schematic diagram of the width of the radiating arm and the feeding balun circuit of the dual-polarized dielectric dipole antenna shown;

[0042] Figure 4 Shows Figure 1 A side view of the dual-polarized dielectric dipole antenna shown in another direction;

[0043] Figure 5 for Figure 1 A schematic diagram of the feeding current of the two-feed balun circuit of the dual-polarized dielectric dipole antenna shown;

[0044] Figure 6 Shows Figure 1 A top view of an antenna subarray composed of dual-polarized dielectric dipole antennas shown;

[0045] Figure 7 for Figure 6 A three-dimensional schematic diagram of the antenna subarray shown;

[0046] Figure 8 for Figure 6 A three-dimensional schematic diagram of an antenna array composed of antenna subarrays shown;

[0047] Fig. 9 for Figure 1 Schematic diagram of echo feedback of the dual-polarity dielectric dipole antenna shown;

[0048] Fig.10 is a structural diagram of an antenna according to another embodiment of the present disclosure;

[0049] Fig.11 for Fig.10 a top view of the antenna shown;

[0050] Fig.12 for Fig.10 A side view of the antenna in one orientation;

[0051] Fig.13 for Fig.10 A side view of the antenna in another direction;

[0052] Fig.14 This is a structural diagram of an antenna according to another embodiment of the present disclosure;

[0053] Fig.15 for Fig.14 Test pattern for one orientation of the antenna shown;

[0054] Fig.16 for Fig.14 Test pattern for another orientation of the antenna shown;

[0055] Fig.17 Schematic diagram showing different structural types of director blades. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0057] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0058] As described above, the die-cast dipole antenna is too heavy to be used in the 5G advanced antenna system (5G AAS); the PCB dipole antenna has too many solder joints, resulting in a higher risk of PIM, and also requires a complex welding process, which increases production costs. The embodiments of the present disclosure provide a dual-polarity dielectric dipole antenna that can reduce the number of perforations on the dielectric, making the production of antenna elements easier and stabilizing the performance of the antenna circuit; the use of dielectric materials as the entire antenna can significantly reduce the overall weight of the antenna, and the radiating unit as a whole can realize the assembly of the various components of the antenna in a simple manner, reducing the number of solder joints and reducing the risk of intermodulation distortion PIM. The following will be combined with Figures 1 to 17 Example embodiments of the present disclosure are described.

[0059] Figure 1 shows a three-dimensional schematic diagram of a dual-polarized dielectric dipole antenna according to an embodiment of the present disclosure, Figure 2 Shows Figure 1 An exploded schematic diagram of a dual-polarized dielectric dipole antenna is shown. Figure 3a Shows Figure 1 A side view of the dual-polarized dielectric dipole antenna shown along the direction of the second dielectric plate; Figure 3b Shows Figure 1 Schematic diagram of the width of the radiating arms and feed balun circuit of the dual-polarized dielectric dipole antenna shown. Figure 4 Shows Figure 1 A side view of the dual-polarized dielectric dipole antenna is shown along the direction of the first dielectric plate.

[0060] like Figures 1 to 4 As shown, the dual-polarized dielectric dipole antenna 1 described herein generally comprises a cross-shaped radiation element 101 and a director 102 .

[0061] The cross-shaped radiation unit 101 includes a first dielectric plate 101-1 and a second dielectric plate 101-2 vertically cross-connected in a cross shape; the first dielectric plate 101-1 includes a first part and a second part separated by the second dielectric plate 101-2, and the second dielectric plate 101-2 includes a first part and a second part separated by the first dielectric plate 101-1.

[0062] A first radiating arm 1011 is provided on one side of the first part of the first dielectric plate 101-1, a first feeding balun circuit 1011_a is provided on the same side of the second part, and a second radiating arm 1012 coupled to the first feeding balun circuit is provided on the other side of the second part. Figure 3a As shown by the dashed line; a third radiating arm 1013 is provided on one side of the first part of the second dielectric plate 101-2, a second feeding balun circuit 1013_a is provided on the same side of the second part, and a fourth radiating arm 1014 coupled to the second feeding balun circuit is provided on the other side of the second part, as shown in FIG. Figure 4 As shown by the middle dotted line, wherein the medium plane where the first radiation arm 1011 and the third radiation arm 1013 are located intersects.

[0063] The second feeding balun circuit 1013_a of the second portion of the second dielectric board 101-2 is connected to the third radiation arm 1013 of the first portion of the second dielectric board 101-2 across the top of the first dielectric board 101-1.

[0064] A through hole 101_a is provided in the first part of the second dielectric plate 101-2 and is flat against the first dielectric plate 101-1 at the intersection of the first dielectric plate and the second dielectric plate, so that the plane separated by the second dielectric plate of the first dielectric plate passes through the through hole, so that the first feeding balun circuit 1011_a is connected to the first radiation arm 1011 through the through hole along the through plane.

[0065] The guide plate 102 is arranged on the top of the cross-shaped radiation unit 101, and a through hole 102-1 is opened at the center of the guide plate, which prevents the guide plate from contacting the second feeding balun circuit 1013_a across the top of the first dielectric plate 101-1.

[0066] exist Figures 1 to 4 In the illustrated embodiment, the arrangement of the guide plate 102 on the top of the cross-shaped radiation unit 101 is merely a relative position illustration. It should be understood that when the cross-shaped radiation unit 101 is in other orientations, the guide plate 102 changes its orientation accordingly, but its placement position relative to the cross-shaped radiation unit does not change.

[0067] exist Figures 1 to 4 In the embodiment shown, the first radiation arm 1011 and the second radiation arm 1012 are a group of radiation arms that realize +45° polarization. The two radiation arms are arranged on different sides of the first dielectric plate. Figure 3a As shown, the first radiation arm 1011 is marked by a solid line, and the second radiation arm 1012 is marked by a dotted line, and is located on the other side of the first dielectric plate. The third radiation arm 1013 and the fourth radiation arm 1014 are another group of radiation arms to achieve -45° polarization, and the two radiation arms are arranged on different sides of the first dielectric plate, as shown in FIG. Figure 4 As shown, the third radiation arm 1013 is marked with a solid line, and the fourth radiation arm 1014 is marked with a dotted line, and is located on the other side of the second dielectric plate. It should be understood that the first radiation arm 1011 and the second radiation arm 1012 can also be a group of radiation arms that realizes -45° polarization, and another group of the third radiation arm 1013 and the fourth radiation arm 1014 realizes +45° polarization.

[0068] exist Figures 1 to 4In the illustrated embodiment, the first dielectric plate 101-1 and the second dielectric plate 101-2 are cross-connected vertically to form a whole, namely, a cross-shaped radiation unit 101. The cross-shaped radiation unit 101 can be integrally formed by a mold, or can be formed by hot-melt bonding or the like. There is no gap at the cross-connection of the first dielectric plate 101-1 and the second dielectric plate 101-2 of the cross-shaped radiation unit, and the formed cross-shaped radiation unit has a stable overall structure and is easy to manufacture, so that circuits can be manufactured thereon, such as printing and drawing of circuits, electroplating and spraying, and the like.

[0069] In some embodiments, the dual-polarized dielectric dipole antenna 1 may further include a third dielectric plate 101-3. The third dielectric plate 101-3 supports the cross-shaped radiating element 101. The cross-shaped radiating element 101 may be integrally formed with the third dielectric plate 101-3, or may be arranged on the third dielectric plate 101-3 by means of installation and fixing. The third dielectric plate 101-3 includes a power distribution circuit, which is connected to the first and second feeding balun circuits and is used to power the feeding balun circuits.

[0070] In some embodiments, the third dielectric plate 101 - 3 is further provided with a grounding 1015 of the radiation arm, and the first to fourth radiation arms are all connected to the grounding. Figure 1 , Figure 2 In the embodiment shown, the shape of the grounding 1015 of the radiating arm is approximately square, which is only an example. It should be understood that the shape of the grounding 1015 can also be other shapes, such as circular, polygonal, etc. The embodiments of the present disclosure are not limited to this.

[0071] In some embodiments, both sides of the third dielectric plate 101 - 3 may have skirts of a certain height protruding up and down in the vertical direction, which may serve as partition walls between sub-arrays in the antenna array.

[0072] In some embodiments, the dual-polarized dielectric dipole antenna 1 may include a metal reflector disposed below the third dielectric plate, the metal reflector may be used as a ground for the antenna, and the ground 1015 of the radiating arm is connected to the metal reflector. The metal reflector may be an independent component installed together with the third dielectric plate, or may be a metal coating on the bottom surface of the third dielectric plate. The embodiments of the present disclosure are not limited to this.

[0073] In some implementations, the first and second parts of the first dielectric plate 101-1, and the first and second parts of the second dielectric plate 101-2 have a raised portion 1016 on the top side, respectively. The guide plate 102 is provided with four holes corresponding to the raised portion 1016. The guide plate can be positioned on the cross-shaped radiation unit by passing through the raised portion through the four holes, and then fixedly installed on the top of the cross-shaped radiation portion 101 by hot-melting the dielectric. The raised portion can also be a snap-on structure, and the hole of the guide plate passes through the raised portion and is clamped on the top of the cross-shaped radiation portion. It can be understood that the guide plate can also be fixedly installed on the top of the cross-shaped vertical radiation unit by other conventional methods, such as gluing. In addition, the guide plate can also be joined to the raised portion 1016 at the edge position without the above-mentioned four holes.

[0074] Figure 3a FIG. 4 shows a side view of the antenna along the direction of the second dielectric plate 101 - 2 . Figure 3a As shown, the first feed balun circuit 1011_a passes through the through hole 101_a of the first part of the second dielectric plate 101-2 and is connected to the first radiating arm 1011. Conventional dual-polarized antennas always require at least two holes for balun circuit electroplating, and smaller holes are required due to the limited space at the cross-connection, which is not conducive to the production of the through-hole circuit on the dielectric plate, such as routing engraving, electroplating and other processes. In this embodiment, only one hole is required at the cross-connection, so the hole can be opened larger, so that the production of the first feed balun circuit 1011_a on the first dielectric plate 101-1 on the dielectric plate, such as routing engraving, electroplating and other processes, will be easier. And the number of holes is reduced, which is conducive to the simplification of production and the guarantee of performance.

[0075] Figure 3b Schematic diagram of the width of the radiation arm and the feeding balun circuit of the dual-polarized dielectric dipole antenna 1. Figure 3b As shown, the radiating arm has a radiating arm portion along the cross connection, a radiating arm portion along the top side edge of the dielectric plate, a radiating arm portion along the side edge adjacent to the top side edge of the dielectric plate, and a radiating arm portion extending in a direction away from the adjacent side edge. In the embodiment of the present disclosure, the first radiating arm 1011, the second radiating arm 1012, the third radiating arm 1013, and the fourth radiating arm 1014 all have similar structures as described above, but differ in specific dimensions. Figure 3bAs shown, the radiating arm portion along the cross connection has different widths wa1 and wa2, the radiating arm portion along the top side of the dielectric plate has different widths wa3 and wa4, the radiating arm portion along the adjacent side of the top side of the dielectric plate has different widths wa5 and wa6, and the radiating arm portion extending away from the adjacent side has a width wa7. The above widths wa1-wa7 are different. Moreover, the changes in the widths of these radiating arms are gradual. The dynamic change of the radiating arm width can improve the impedance bandwidth of the antenna and also reduce the side length of the antenna unit.

[0076] It can be understood that the seven values ​​wa1-wa7 shown in the figure are only a limited representation of the width of each radiating arm portion, and the width of each radiating arm is gradual and has different width changes. The width of the connection of each radiating arm portion can also be different and gradual, and the connection of each radiating arm portion can be a smooth connection with a certain curvature. It can be understood that the connection of each radiating arm portion can be any other way, which can be adjusted according to the actual antenna radiation requirements.

[0077] Figure 3b Also shown are the structure of the feed balun circuit and its width in different sections of the feed line. In the embodiment of the present disclosure, the first feed balun circuit and the second feed balun circuit both have similar structures as described above, but differ in specific dimensions. The feed balun circuit has different widths wb1-wb5 in different sections of the feed line. Although five width values ​​are indicated in the figure, it can be understood that the number of sections of the feed balun circuit may not be limited to 5, but may be any section of any width, which can be adjusted according to the actual antenna feeding needs. This feed balun circuit can further optimize the impedance bandwidth within a limited space. Based on this structure, the antenna element can achieve a smaller size. In addition, the feed balun circuit in the figure has a serpentine structure, which can be understood and may not be required.

[0078] Figure 4 The side view along the direction of the first dielectric plate is shown. In the figure, the second feeding balun circuit 1013_a on the second part of the second dielectric plate 101-2 crosses the top of the first dielectric plate 101-1 and connects to the third radiation arm 1013 of the first part of the second dielectric plate 101-2 through the through hole 101_a of the first part of the second dielectric plate.

[0079] Figure 5 (a) shows the feeding current of the first feeding balun circuit being directly connected to the first and third radiating arms for feeding and coupled feeding, respectively. The feeding current i1 of the first feeding balun circuit 1011_a flows directly from the feeding port through the through hole 101_a into the first radiating arm 1011 to become i1' and is simultaneously coupled to the second radiating arm 1012 to become i1". Figure 5(b) shows the feeding current of the second feeding balun circuit directly feeding and coupled feeding to the third and fourth radiating arms. Among them, the feeding current i2 of the second feeding balun circuit 1013_a flows directly from the feeding port across the top of the first dielectric plate 101-1 into the third radiating arm 1013 to become i2', and is simultaneously coupled to the fourth radiating arm 1014 to become i2". The currents i1' and i1" are of the same magnitude and opposite phases, and i2' and i2" are of the same magnitude and opposite phases, thereby forming two pairs of dipole antenna units.

[0080] Figure 6 Shows Figure 1 A top view of an antenna subarray composed of dual-polarized dielectric dipole antennas shown; Figure 7 for Figure 6 The three-dimensional schematic diagram of the antenna subarray is shown in FIG. Figure 6 , 7 As shown, six bipolar dielectric dipole antennas are neatly arranged on the same third dielectric plate 201 to form an antenna subarray 2. 2011_1 to 2011_6 are one radiating arm of the six antennas. 2013_1 to 2013_6 are another radiating arm of the six antennas. Figure 1 The radiating arms 2011 and 2013 in the figure. The cross-shaped radiating units of the six bipolar dielectric dipole antennas can be integrally formed with the third dielectric plate 201, so that the overall production of the antenna array is simpler. For example, the entire antenna array can be formed at one time using a mold, and the antenna structure after production is stable, and the circuit production thereon, such as line engraving, electroplating and other processing, will also be more convenient. In addition, the installation of the guide plate will also be very convenient. The cross-shaped radiating units of the six bipolar dielectric dipole antennas can also be installed and fixed to the third dielectric plate 201 in various conventional ways. Based on the above design structure, a large-size unit array can obtain better flatness and stable performance. According to design requirements, the antenna subarray can also be provided with other numbers of antenna elements.

[0081] Figure 8 Shows Figure 6 The antenna array 3' is composed of eight sub-arrays 301'-308'. The eight sub-arrays can be assembled together by an assembly fixture or by other methods, such as welding.

[0082] Fig. 9 Shows Figure 1The echo feedback of the bipolar dielectric dipole antenna shown. As shown in the figure, the solid line represents the return loss S11 of one group of radiating arms of the antenna element of the embodiment of the present disclosure, and the dotted line represents the return loss S22 of another group of radiating arms of the antenna element of the embodiment of the present disclosure. The antenna element of the embodiment of the present disclosure is a broadband oscillator that can cover several communication frequency bands.

[0083] Figure 10-13 FIG. 2 shows an antenna structure of another embodiment of the present disclosure. Figures 10 to 13 As shown, the dual-polarized dielectric dipole antenna 3 has a structure similar to Figure 1-4 The antenna structures shown are basically the same, and generally include a cross-shaped radiation unit 301 and a director plate 302 .

[0084] The cross-shaped radiation unit 301 includes a first dielectric plate 301-1 and a second dielectric plate 301-2 that are cross-connected; the first dielectric plate 301-1 includes a first part and a second part separated by the second dielectric plate, and the second dielectric plate 301-2 includes a first part and a second part separated by the first dielectric plate.

[0085] A first radiating arm 3011 is provided on one side of the first part of the first dielectric plate 301-1, a first feeding balun circuit 3011_a is provided on the same side of the second part, and a second radiating arm 3012 coupled to the first feeding balun circuit is provided on the other side of the second part; a third radiating arm 3013 is provided on one side of the first part of the second dielectric plate 301-2, a second feeding balun circuit 3013_a is provided on the same side of the second part, and a fourth radiating arm 3014 coupled to the second feeding balun circuit is provided on the other side of the second part; wherein the dielectric surfaces where the first radiating arm 3011 and the third radiating arm 3013 are located intersect.

[0086] The second feeding balun circuit 3013_a of the second portion of the second dielectric board 301-2 is connected to the third radiating arm 3013 of the first portion of the second dielectric board across the top side of the first dielectric board 301-1.

[0087] The first feeding balun circuit 3011_a of the second part of the first dielectric board 301-1 is connected to the first radiating arm 3011 of the first part of the first dielectric board across the top side of the second dielectric board 301-2.

[0088] The guide plate 302 is arranged at the top of the cross-shaped radiation unit, and a through hole 302_1 is opened at the center of the guide plate, which prevents the guide plate from contacting the second feeding balun circuit 3013_a across the top of the first dielectric plate 301-1 and the first feeding balun circuit 3011_a across the top of the second dielectric plate 301-2.

[0089] Figure 10-13 The embodiment shown is Figure 1-4 The difference of the embodiment shown is that no through hole is provided on the second dielectric plate, and the second feeding balun circuit is connected to the radiation arm of another part of the dielectric plate through another dielectric plate like the first feeding balun circuit. Figure 10-13 In the embodiment shown, the convex portion 3016 on the top of the first and second dielectric plates, the holes on the plate corresponding to the convex portion, the grounding 3015 of each radiating arm, the metal reflector and other related structures are all connected to Figure 1-4 The corresponding parts of the illustrated embodiments are the same and the detailed description will not be repeated here.

[0090] Figure 10-13 In the embodiment shown, there are no through holes on the cross-shaped radiation unit. Although the two jumper-connected feeding balun circuits have intersection points due to the crossing of the jumper routes, which has a certain impact on the high-frequency performance, the overall antenna production is simpler and the production of the circuit on the dielectric board is more convenient.

[0091] Figure 14-16 FIG. 2 shows an antenna structure of another embodiment of the present disclosure. Figure 14-16 As shown, the dual-polarized dielectric dipole antenna 4 generally comprises a cross-shaped radiation unit 301 and a director 302 .

[0092] The cross-shaped radiation unit 401 includes a first dielectric plate 401-1 and a second dielectric plate 401-2 cross-connected in a cross shape; the first dielectric plate includes a first part and a second part separated by the second dielectric plate, and the second dielectric plate includes a first part and a second part separated by the first dielectric plate.

[0093] A first radiating arm 4011 is provided on one side of the first part of the first dielectric plate 401-1, a second radiating arm 4012 is provided on the same side of the second part, and a grounding 4017 coupled to the second radiating arm is provided on the other side of the second part; a third radiating arm 4013 is provided on one side of the first part of the second dielectric plate 401-2, a second feeding balun circuit 4013_a is provided on the same side of the second part of the second dielectric plate, and a fourth radiating arm 4014 coupled to the second feeding balun circuit is provided on the other side of the second part; wherein the dielectric surfaces where the first radiating arm 4011 and the third radiating arm 4013 are located intersect.

[0094] The first radiating arm 4011 has a portion 4011_a extending to the first portion of the second dielectric plate 401-2 along the radiating arm portion at the cross connection between the first dielectric plate and the second dielectric plate; the second radiating arm 4012 also has a portion extending to the first portion of the second dielectric plate 401-2 along the radiating arm portion at the cross connection between the first dielectric plate and the second dielectric plate. Fig.16As shown by the dotted line corresponding to 4011_a; the first radiation arm 4011 and the second radiation arm 4012 have a coupling relationship between the parts extending to the first part of the second dielectric plate 401-2.

[0095] The second feeding balun circuit 4013_a of the second part of the second dielectric board 401-2 is connected to the third radiation arm 4013 of the first part of the second dielectric board across the top side of the first dielectric board.

[0096] The guide plate 402 is arranged on the top of the cross-shaped radiation unit.

[0097] In one embodiment, the dual-polarized dielectric dipole antenna 4 further includes a third dielectric plate 401-3, on which the cross-shaped radiation unit is disposed; the third dielectric plate includes a power distribution circuit, which is connected to the second radiation arm 4012 and the second feeding balun circuit. The power distribution circuit directly feeds the second radiation arm 4012, and the first radiation arm obtains feeding from the first radiation arm through slot coupling.

[0098] In one embodiment, the dual-polarized dielectric dipole antenna 4 further includes a ground 4015 disposed on the third dielectric plate 401-3, the first, second and fourth radiating arms and a ground 4017 on the second portion of the first dielectric plate 401-1 are all connected to the ground 4015 on the third dielectric plate, and the second radiating arm 4012 is coupled to the ground 4017 on the second portion of the first dielectric plate. The width and height of the ground 4017 can be adjusted to optimize the bandwidth.

[0099] In one embodiment, the cross-shaped radiation unit 401 and the third dielectric plate 401 - 3 are integrally formed.

[0100] Figure 14-16 In the embodiment shown, the connection structure between the second feeding balun circuit and the radiation arm on the second dielectric board is the same as that in the previous embodiment, in which the second feeding balun circuit is connected to the third radiation arm via the first dielectric board. Figure 14-16 In the embodiment shown, no through hole is provided on the second dielectric plate. Meanwhile, no feeding balun circuit is provided on the first dielectric plate. Instead, mutually coupled first and second radiation arms are provided. By directly feeding the second radiation arm, the first radiation arm can also be fed through coupling.

[0101] In addition to the above structure, Figure 14-16 In the illustrated embodiment, the raised portion 4016 on the top of the first and second dielectric plates, the holes on the lead sheet corresponding to the raised portions, the metal reflective plate, etc. are the same as the corresponding parts of the previous embodiment. The specific structure and function are described above and will not be repeated here.

[0102] Figure 14-16 In the embodiment shown, no through hole is required on the second dielectric plate, and the cross-shaped radiation unit composed of the first dielectric plate and the second dielectric plate is more conducive to integrated manufacturing, such as one-time molding by a mold, and the manufacturing of the circuit on the dielectric plate, such as electroplating, is easier. The good electroplating quality formed in this way makes the overall RF performance of the antenna better, and the performance such as loss and PIM can be optimized.

[0103] The antennas described in the above embodiments can be used as follows Figure 6-8 The antenna array shown is formed into an antenna array. It is understood that the size of the antenna array is not limited to Figure 6-8 The size of the subarray or array shown.

[0104] Fig.17 Guide plates 502, 602, 702 and 802 of different structures are shown. Guide plate 502 is a square structure, which has 4 holes 5022 for fixed installation to the cross-shaped radiation unit, a through hole 5024 in the center, and an annular slot 5023 can be provided around the through hole to adjust the radiation performance. The guide plate can also have a notch 5021 in the middle of the four sides. Guide plate 602 is a square structure with arc corners. The central through hole 7023 of guide plate 702 is a square. Guide plate 802 is a guide plate of a circular structure. The guide plates of the above-mentioned structures can be applied to the above-mentioned embodiments according to actual radiation needs. The guide plate structure of each embodiment of the present disclosure is not limited to the above-mentioned structure, and its contour and central through hole can adopt other shapes. The guide plate is a metal sheet and can be formed by stamping or the like.

[0105] In some embodiments, the first dielectric plate, the second dielectric plate, and the third dielectric plate can be injection-molded plastic parts, which are integrally formed by a mold, so that the cross-shaped radiation unit and the third dielectric plate are easy to manufacture, the overall structure is stable and reliable, and it is convenient to manufacture the circuit thereon. It should be understood that the cross-shaped radiation unit and the third dielectric plate can also be manufactured by other manufacturing processes or using other insulating materials, and the embodiments of the present disclosure are not limited to this.

[0106] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A dual-polarized dielectric dipole antenna, characterized in that: It comprises a cross-shaped radiation unit (101) and a guide plate (102), wherein: The cross-shaped radiation unit (101) comprises a first dielectric plate (101-1) and a second dielectric plate (101-2) vertically cross-connected in a cross shape; The first dielectric plate (101-1) includes a first portion and a second portion separated by a second dielectric plate, and the second dielectric plate (101-2) includes a first portion and a second portion separated by the first dielectric plate; A first radiating arm (1011) is provided on one side of the first part of the first dielectric plate (101-1), a first feeding balun circuit (1011_a) is provided on the same side of the second part, and a second radiating arm (1012) coupled to the first feeding balun circuit is provided on the other side of the second part; a third radiating arm (1013) is provided on one side of the first part of the second dielectric plate (101-2), a second feeding balun circuit (1013_a) is provided on the same side of the second part, and a fourth radiating arm (1014) coupled to the second feeding balun circuit is provided on the other side of the second part; wherein the dielectric surfaces where the first radiating arm (1011) and the third radiating arm (1013) are located intersect; The second feeding balun circuit (1013_a) of the second part of the second dielectric plate (101-2) is connected to the third radiation arm (1013) of the first part of the second dielectric plate (101-2) across the top side of the first dielectric plate (101-1); A through hole (101_a) is provided in the first part of the second dielectric plate (101-2) at the intersection of the first dielectric plate and the second dielectric plate, so that the plane separated by the second dielectric plate from the first dielectric plate passes through the through hole, and the first feeding balun circuit (1011_a) is connected to the first radiation arm (1011) along the through plane through the through hole; The guide plate (102) is arranged on the top of the cross-shaped radiation unit (101), and a through hole (102-1) is provided at the center of the guide plate, so that the guide plate does not contact the second feeding balun circuit (1013_a) that spans the top side of the first dielectric plate (101-1).

2. The dual-polarized dielectric dipole antenna according to claim 1, characterized in that: The antenna also includes a third dielectric plate (101-3), the third dielectric plate includes a power distribution circuit, and the power distribution circuit is connected to the first and second feeding balun circuits; the cross-shaped radiation unit is arranged on the third dielectric plate.

3. The dual-polarized dielectric dipole antenna according to claim 2, characterized in that: The first, second and third dielectric plates are integrally formed.

4. The dual-polarized dielectric dipole antenna according to claim 2, characterized in that: The antenna also includes a grounding (1015) of the radiation arm arranged on the third dielectric board, and the first to fourth radiation arms are all connected to the grounding.

5. The dual-polarized dielectric dipole antenna according to claim 4, characterized in that: The antenna also includes a metal reflector plate arranged below the third dielectric plate, and the ground (1015) is connected to the metal reflector plate.

6. The dual-polarized dielectric dipole antenna according to any one of claims 1 to 5, characterized in that: The first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side edge adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

7. The dual-polarized dielectric dipole antenna according to claim 6, characterized in that: The widths of the radiation arm parts and their connections are different and gradually change.

8. The dual-polarized dielectric dipole antenna according to any one of claims 1 to 5 and 7, characterized in that: The first and second feeding balun circuits have different widths in different sections of the feeding lines.

9. A dual-polarized dielectric dipole antenna, characterized in that: It comprises a cross-shaped radiation unit (301) and a guide plate (302), wherein: The cross-shaped radiation unit (301) comprises a first dielectric plate (301-1) and a second dielectric plate (301-2) vertically cross-connected in a cross shape; The first dielectric plate (301-1) includes a first portion and a second portion separated by a second dielectric plate, and the second dielectric plate (301-2) includes a first portion and a second portion separated by the first dielectric plate; A first radiating arm (3011) is provided on one side of the first part of the first dielectric plate (301-1), a first feeding balun circuit (3011_a) is provided on the same side of the second part, and a second radiating arm (3012) coupled to the first feeding balun circuit is provided on the other side of the second part; a third radiating arm (3013) is provided on one side of the first part of the second dielectric plate (301-2), a second feeding balun circuit (3013_a) is provided on the same side of the second part, and a fourth radiating arm (3014) coupled to the second feeding balun circuit is provided on the other side of the second part; wherein the dielectric surfaces where the first radiating arm (3011) and the third radiating arm (3013) are located intersect; The second feeding balun circuit (3013_a) of the second part of the second dielectric plate (301-2) is connected to the third radiation arm (3013) of the first part of the second dielectric plate across the top side of the first dielectric plate (301-1); The first feeding balun circuit (3011_a) of the second part of the first dielectric plate (301-1) is connected to the first radiation arm (3011) of the first part of the first dielectric plate across the top side of the second dielectric plate (301-2); The guide plate (302) is arranged at the top of the cross-shaped radiation unit, and a through hole (302_1) is provided at the center of the guide plate, so that the guide plate does not contact the second feeding balun circuit (3013_a) across the top side of the first dielectric plate (301-1) and the first feeding balun circuit (3011_a) across the top side of the second dielectric plate (301-2).

10. The dual-polarized dielectric dipole antenna according to claim 9, characterized in that: The antenna also includes a third dielectric plate (301-3), the third dielectric plate includes a power distribution circuit, and the power distribution circuit is connected to the first and second feeding balun circuits; the cross-shaped radiation unit is arranged on the third dielectric plate.

11. The dual-polarized dielectric dipole antenna according to claim 10, characterized in that: The first, second and third dielectric plates are integrally formed.

12. The dual-polarized dielectric dipole antenna according to claim 11, characterized in that: The antenna also includes a grounding (3015) of a radiation arm arranged on a third dielectric plate, and the first to fourth radiation arms are all connected to the grounding.

13. The dual-polarized dielectric dipole antenna according to claim 12, wherein: The antenna also includes a metal reflector plate arranged below the third dielectric plate, and the grounding (3015) of the radiation arm on the third dielectric plate is connected to the metal reflector plate.

14. The dual-polarized dielectric dipole antenna according to any one of claims 9 to 13, characterized in that: The first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side edge adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

15. The dual-polarized dielectric dipole antenna according to claim 14, characterized in that: The widths of the radiation arm parts and their connections are different and vary gradually.

16. The dual-polarized dielectric dipole antenna according to any one of claims 8 to 13 and 15, characterized in that: The first and second feeding balun circuits have different widths in different sections of the feeding lines.

17. A dual-polarized dielectric dipole antenna, characterized in that: It comprises a cross-shaped radiation unit (401) and a guide plate (402), wherein: The cross-shaped radiation unit (401) comprises a first dielectric plate (401-1) and a second dielectric plate (401-2) which are vertically cross-connected in a cross shape; the first dielectric plate comprises a first part and a second part separated by the second dielectric plate, and the second dielectric plate comprises a first part and a second part separated by the first dielectric plate; A first radiating arm (4011) is provided on one side of the first part of the first dielectric plate (401-1), a second radiating arm (4012) is provided on the same side of the second part, and a grounding (4017) coupled to the second radiating arm is provided on the other side of the second part; a third radiating arm (4013) is provided on one side of the first part of the second dielectric plate (401-2), a second feeding balun circuit (4013_a) is provided on the same side of the second part of the second dielectric plate, and a fourth radiating arm (4014) coupled to the second feeding balun circuit is provided on the other side of the second part; wherein the dielectric surfaces where the first radiating arm (4011) and the third radiating arm (4013) are located intersect; The first radiating arm (4011) has a portion (4011_a) extending to the first portion of the second dielectric plate (401-2) along the radiating arm portion at the cross connection between the first dielectric plate and the second dielectric plate; the second radiating arm (4012) has a portion extending to the first portion of the second dielectric plate (401-2) along the radiating arm portion at the cross connection between the first dielectric plate and the second dielectric plate; the portions of the first radiating arm (4011) and the second radiating arm (4012) extending to the first portion of the second dielectric plate (401-2) are in a coupling relationship; The second feeding balun circuit (4013_a) of the second part of the second dielectric plate (401-2) is connected to the third radiation arm (4013) of the first part of the second dielectric plate across the top side of the first dielectric plate (401-1); The guide plate (402) is arranged on the top of the cross-shaped radiation unit.

18. The dual-polarized dielectric dipole antenna according to claim 17, characterized in that: The antenna also includes a third dielectric plate (401-3), and the cross-shaped radiation unit is arranged on the third dielectric plate; the third dielectric plate includes a power distribution circuit, and the power distribution circuit is connected to the second radiation arm (4012) and the second feeding balun circuit (4013_a).

19. The dual-polarized dielectric dipole antenna according to claim 18, characterized in that: The first, second and third dielectric plates are integrally formed.

20. The dual-polarized dielectric dipole antenna according to claim 18, characterized in that: The antenna also includes a ground (4015) arranged on a third dielectric plate (401-3), the first, third and fourth radiation arms and the ground (4017) on the second part of the first dielectric plate (401-1) are all connected to the ground (4015) on the third dielectric plate, and the second radiation arm (4012) is coupled to the ground (4017) on the second part of the first dielectric plate (401-1).

21. The dual-polarized dielectric dipole antenna according to claim 20, characterized in that: The antenna also includes a metal reflector plate arranged below the third dielectric plate, and the ground (4015) on the third dielectric plate is connected to the metal reflector plate.

22. The dual-polarized dielectric dipole antenna according to any one of claims 17 to 21, characterized in that: The first, second, third and fourth radiation arms each have a radiation arm portion along the cross connection, a radiation arm portion along the top side edge of the dielectric plate, a radiation arm portion along the side edge adjacent to the top side edge of the dielectric plate, and a radiation arm portion extending in a direction away from the adjacent side edge.

23. The dual-polarized dielectric dipole antenna according to claim 22, characterized in that: The widths of the radiation arm parts and their connections are different and vary gradually.

24. The dual-polarized dielectric dipole antenna according to any one of claims 17 to 21 and 23, characterized in that: The second feeding balun circuit has different widths at different sections of the feeding line.

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