Antenna unit, antenna array and communication equipment

Abstract

The utility model relates to an antenna unit, an antenna array and communication equipment. The antenna unit is designed to comprise a double-layer radiation sheet assembly, a signal transceiving assembly, a feed pin and a grounding assembly, the double-layer radiation sheet assembly comprises an upper-layer radiation sheet and a lower-layer radiation sheet; the distance between the magnetic surface of the grounding assembly and the edge of the upper radiation sheet is smaller than the distance between the electric surface of the grounding assembly and the edge of the upper radiation sheet. One end of the feed needle is connected with the lower-layer radiation sheet, and the other end of the feed needle is connected with the signal transceiving component, so that the problem that the gain of the antenna units is reduced too fast is solved under the condition that the distance between the antenna units is not changed and the size of the whole antenna array plane is not changed and the gain of the antenna array plane is not influenced.

Description

TECHNICAL FIELD

[0001] The present specification relates to the field of radar communication, and in particular, to an antenna unit, an antenna array and a communication device. BACKGROUND

[0002] Linear polarization phased array antenna is a device for realizing signal transmission or reception of radar equipment, and is a key component of radar equipment. The radiation pattern, gain and standing wave of linear polarization phased array antenna are directly related to the radar range.

[0003] The antenna units of the linear polarization phased array antenna currently used are mainly microstrip antennas, dipole antennas, quasi-Yagi antennas and the like. The linear polarization phased array antenna composed of these conventional antenna units has the problem of rapid gain decline when scanning in the magnetic plane (H plane, referring to the plane where the magnetic field vector (H field) is located) due to the enhanced electromagnetic coupling effect between adjacent antenna units, which affects the overall performance. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the embodiments of the present specification provide an antenna unit, an antenna array and a communication device to solve the technical defects in the prior art.

[0005] According to a first aspect of the present disclosure, an antenna unit is provided, comprising: a double-layer radiation sheet assembly, a signal transceiving assembly, a feed needle and a grounding assembly; the double-layer radiation sheet assembly comprises an upper radiation sheet and a lower radiation sheet;

[0006] The grounding assembly surrounds the periphery of the upper radiation sheet, and the distance of the magnetic plane of the grounding assembly from the edge of the upper radiation sheet is smaller than the distance of the electric plane of the grounding assembly from the edge of the upper radiation sheet.

[0007] One end of the feed needle is connected to the lower radiation sheet, and the other end is connected to the signal transceiving assembly.

[0008] Optionally, the magnetic plane is irregularly shaped.

[0009] Optionally, the irregular shape includes sawtooth or corrugated shape.

[0010] Optionally, the electric plane is linear.

[0011] Optionally, the upper radiation sheet and the lower radiation sheet are located on both sides of an insulating layer plate.

[0012] Optionally, a columnar member is provided around the periphery of the feed needle, and the columnar member and the feed needle form a coaxial structure; one end of the columnar member is connected to the lower radiation sheet, and the other end is grounded.

[0013] Optionally, the feed needle is connected to the signal transceiving assembly through a strip line; one end of the strip line is connected to the feed needle, and the other end is welded to the signal transceiving assembly through array solder balls.

[0014] The embodiment also provides an antenna array comprising the antenna unit.

[0015] Optionally, the antenna units are arranged at equal intervals to form the array.

[0016] The embodiment also provides a communication device comprising the antenna array.

[0017] One beneficial effect of the present disclosure is that by designing the antenna unit to comprise a double-layer radiation sheet assembly, a signal transceiving assembly, a feed pin and a grounding assembly; the double-layer radiation sheet assembly comprises a structure of an upper radiation sheet and a lower radiation sheet; and the grounding assembly surrounds the periphery of the upper radiation sheet, the distance of the magnetic surface of the grounding assembly from the edge of the upper radiation sheet is less than the distance of the electric surface of the grounding assembly from the edge of the upper radiation sheet; one end of the feed pin is connected to the lower radiation sheet, and the other end is connected to the signal transceiving assembly, the interval between the antenna units is unchanged, and thus the size of the entire antenna array surface is unchanged, thereby solving the problem of rapid decline of the gain of the antenna unit without affecting the gain of the antenna array surface, and the gain after scanning is higher than that of the array composed of the antenna units in the prior art.

[0018] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1 is a structural diagram of an antenna unit provided by an embodiment of the present disclosure;

[0021] Figure 2 is a top view of an antenna unit provided by an embodiment of the present disclosure;

[0022] Figure 3 is an electric field diagram of a grounding assembly of a serrated grounding assembly antenna unit provided by an embodiment of the present disclosure;

[0023] Figure 4 is an electric field diagram of a grounding assembly of a straight-line grounding assembly antenna unit provided by an embodiment of the present disclosure;

[0024] Figure 5 is a scattering coefficient diagram of a serrated grounding assembly antenna unit provided by an embodiment of the present disclosure;

[0025] Figure 6 is a scattering coefficient diagram of a straight-line grounding assembly antenna unit provided by an embodiment of the present disclosure;

[0026] Figure 7 This is an electric field diagram of the grounding component of an existing antenna unit;

[0027] Figure 8 This is an electric field diagram of the grounding component of an antenna unit provided in this specification;

[0028] Figure 9 This is a bottom view of an antenna element provided in one embodiment of this application;

[0029] Figure 10 This is a structural diagram of a 12*12 antenna array composed of antenna elements in the existing technology;

[0030] Figure 11 It is an electric surface array scanning pattern of a 12*12 antenna array composed of antenna elements in the prior art;

[0031] Figure 12 It is a magnetic surface array scanning pattern of a 12*12 antenna array composed of antenna elements in the prior art;

[0032] Figure 13 This is a structural diagram of a 12*12 antenna array composed of antenna elements provided in this application;

[0033] Figure 14 This application provides an electric surface array scanning pattern for a 12*12 antenna array composed of antenna elements.

[0034] Figure 15 This application provides a magnetic surface array scanning pattern for a 12*12 antenna array composed of antenna elements.

[0035] 101-Upper radiating plate, 102-Lower radiating plate, 103-Feed pin, 104-Grounding component, 105-Signal transceiver component, 106-Columnar component, 107-Strip line, 108-Array solder balls, 109-Insulating layer plate. Detailed Implementation

[0036] Various exemplary embodiments of this specification will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this specification.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this specification or its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] The specific embodiments of this specification are described below with reference to the accompanying drawings.

[0041] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0042] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0043] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0044] A linearly polarized phased array antenna is a device used to transmit or receive signals for radar equipment and is a key component of radar equipment. The radiation pattern, gain, and standing wave ratio of a linearly polarized phased array antenna directly affect the radar's effective range.

[0045] Currently used linearly polarized phased array antennas mainly use microstrip antennas, dipole antennas, and quasi-Yagi antennas as antenna elements. When linearly polarized phased array antennas composed of these existing antenna elements scan the magnetic plane (H-plane, which refers to the plane where the magnetic field vector (H field) is located), the electromagnetic coupling effect between adjacent antenna elements is enhanced, affecting the overall performance and causing the gain to drop too quickly.

[0046] Therefore, this specification provides an antenna element to solve the problems existing in the prior art, which will be described in detail in the following embodiments.

[0047] Figure 1 This is a structural diagram of an antenna element provided in one embodiment of this specification. Figure 1The antenna unit includes a double-layer radiating plate assembly (including an upper radiating plate 101 and a lower radiating plate 102), a signal transceiver assembly 105, a feed pin 103, and a grounding assembly 104. The grounding assembly 104 surrounds the upper radiating plate 101, and the distance between the magnetic surface of the grounding assembly 104 and the edge of the upper radiating plate 101 is less than the distance between the electric surface (E-plane, where the electric field vector (E-field) lies) and the edge of the upper radiating plate 101. One end of the feed pin 103 is connected to the lower radiating plate 102, and the other end is connected to the signal transceiver assembly 105. The distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101, or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101, is related to the frequency used by the antenna. Specifically, to calculate the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 at the target frequency, or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101 at the target frequency, a certain frequency can be used as a reference frequency. The ratio of the target frequency to the reference frequency can be calculated, and then multiplied by the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 at the reference frequency, or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101 at the reference frequency, the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 at the target frequency can be obtained. The formula is as follows:

[0048]

[0049] The distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 at the target frequency or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101 at the target frequency, depending on the specific circumstances. As the reference frequency, The target frequency. The distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 at the reference frequency or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101 at the reference frequency, depending on the specific circumstances.

[0050] With reference frequency as Taking 18GHz as an example, At 18GHz, the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 is 0.625, and the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101 is 1.825. When the frequency changes to... When the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101, or the distance between the electric surface of the grounding component 104 and the edge of the upper radiating plate 101, can be calculated by the following formula:

[0051]

[0052]

[0053] in, For frequency The distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101, For frequency The distance between the electrical surface of the grounding component 104 and the edge of the upper radiating plate 101.

[0054] Because the antenna element employs a two-layer radiating plate structure (upper radiating plate 101 and lower radiating plate 102), it achieves efficient radiation over a wide frequency band, while also possessing advantages such as miniaturization, lightweight design, and ease of integration. Therefore, the antenna element provided in this specification can also be referred to as a double-layer radiating plate microstrip antenna. The antenna element provided in this specification, without changing the antenna element spacing, the overall antenna array size, or affecting the antenna array gain, achieves a higher scanned gain than arrays composed of prior art antenna elements.

[0055] In one implementation of the embodiments of this specification, in order to better achieve that the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 is smaller than the distance between the electric surface and the edge of the upper radiating plate 101, the magnetic surface of the grounding component 104 may be irregularly shaped.

[0056] The irregular shape can be sawtooth or corrugated. Based on the design where the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 is smaller than the distance between the electric surface and the edge of the upper radiating plate 101, the shape of the magnetic surface of the grounding component 104 can be further improved by designing it as sawtooth or corrugated. This makes the magnetic surface of the grounding component 104 closer to the upper radiating plate 101 than the electric surface, resulting in a more significant impact on the antenna scanning gain. Specifically, Figure 2 This is a top view of an antenna element provided in one embodiment of this specification. The grounding component 104 has an irregular, sawtooth-shaped magnetic surface. This sawtooth design allows the magnetic surface of the grounding component 104 to better approach the upper radiating plate 101 without changing the size of the antenna element. This structural design effectively improves the electric field of the magnetic surface of the grounding component 104 of the antenna element.

[0057] In another scenario, the grounding component 104 can be designed in a sawtooth shape without altering the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101. Figure 3 This is an electric field diagram of the grounding component of an antenna unit with a sawtooth grounding component provided in the embodiments of this specification.Figure 4 This is an electric field diagram of the grounding component of an antenna unit with a linear grounding component according to an embodiment of this specification. Figure 3 The distance from the tip of the sawtooth structure of the magnetic surface of the intermediate grounding component 104 to the upper radiating plate 101 is... Figure 4 The distance from the edge of the straight structure of the magnetic surface of the intermediate grounding component 104 to the upper radiating plate 101 is the same. In this case, Figure 5 This is the scattering coefficient of the antenna element with a sawtooth grounding component provided in one embodiment of this specification. Figure 6 This is the scattering coefficient of an antenna element with a linear grounding component provided in one embodiment of this specification. It can be seen that... Figure 5 The bandwidth of the antenna element with a sawtooth grounding component when its scattering coefficient is less than -10dB is 18.3GHz - 15.69GHz = 2.61GHz; while the bandwidth of the antenna element with a straight grounding component when its scattering coefficient is less than -10dB is only 18.53GHz - 18.07GHz = 0.46GHz. It is evident that the scattering coefficient bandwidth of the antenna element with the sawtooth grounding component is significantly wider than that of the antenna element with the straight grounding component. Therefore, when the distance from the tip of the sawtooth to the upper radiating plate 101 is the same as the distance from the edge of the straight structure to the upper radiating plate 101, setting the H-plane of the grounding component to be sawtooth-shaped not only enhances the electric field strength of the H-plane but also achieves a wider scattering coefficient bandwidth, demonstrating a clear advantage.

[0058] Furthermore, the grounding component of the antenna unit provided in the embodiments of this specification can be made of metal or carbon-based materials. Specifically, it can be a conductive medium such as copper and its alloys, galvanized steel, stainless steel, aluminum, or graphite, and is not limited here.

[0059] Figure 7 The electric field diagram of the grounding component of the existing antenna unit shows that when the distance between the magnetic surface of the grounding component and the edge of the upper radiating plate is the same as the distance between the electric surface and the edge of the upper radiating plate, and the magnetic grounding component is not serrated, the electric field strength of the grounding component of the antenna is weak, and the electric field strength on the magnetic surface is lower than that on the electric surface.

[0060] Figure 8 The electric field diagram of the grounding component of an antenna unit provided in this specification shows that when the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 is shorter than the distance between the electric surface and the edge of the upper radiating plate 101, and the magnetic surface grounding component is sawtooth-shaped, the electric field strength of the antenna grounding component is stronger, significantly stronger than that of the grounding component of the antenna unit in the prior art, and the electric field strength on the magnetic surface of the grounding component 104 is higher than or equal to the electric field strength on the electric surface.

[0061] Meanwhile, in order to further ensure that the distance between the magnetic surface of the grounding component 104 and the edge of the upper radiating plate 101 is less than the distance between the electric surface and the edge of the upper radiating plate 101, the electric surface of the grounding component 104 can be set as a straight line.

[0062] In one optional embodiment of this specification, the upper radiating plate 101 and the lower radiating plate 102 are located on opposite sides of the insulating layer plate. In the antenna unit provided in this specification, to expand the bandwidth between the upper radiating plate 101 and the lower radiating plate 102, electrical signals can be transmitted via coupled feeding between them. Therefore, the upper radiating plate 101 and the lower radiating plate 102 do not need to be connected by a conductive structure. Instead, the upper radiating plate 101 is placed on one side of the supporting insulating layer plate 109, and the lower radiating plate 102 is placed on the other side of the insulating layer plate 109, ensuring that they can be coupled and fed. The insulating layer plate 109 can be a PCB (Printed Circuit Board), FR-4 (glass fiber epoxy resin board, a commonly used insulating material widely used in PCB manufacturing), a ceramic substrate, polyimide film, FR-2 (paper phenolic laminate), etc., and is not limited thereto.

[0063] In one optional embodiment of this specification, the lower radiating plate 102 of the antenna element is connected to the signal transceiver assembly 105 via a feed pin 103. Figure 1 In one provided diagram of the internal structure of an antenna element, columnar members 106 are arranged around the feed pin 103. The columnar members 106 and the feed pin 103 form a near-coaxial structure. One end of the columnar members 106 is connected to the lower radiating plate 102, and the other end is grounded. These columnar members 106 serve to form a transition between the antenna element and the signal components. More specifically, Figure 9 This is a bottom view of an antenna element provided in one embodiment of this application. Figure 5 In this structure, a feed needle 103 is centered on a plurality of columnar members 106, which are surrounded by a plurality of columnar members 106, which may be copper pillars. The quasi-coaxial structure may consist of a feed needle 103 and a plurality of copper pillars surrounding the feed needle 103.

[0064] In one optional embodiment of this specification, the lower radiating plate 102 is connected to the signal transceiver component 105 via a feed pin 103. The feed pin 103 is connected to the signal transceiver component 105 via a stripline 107. One end of the stripline 107 is connected to the feed pin 103, and the other end is soldered to the signal transceiver component 105 via an array of solder balls 108. The array of solder balls 108 can be BGA balls (Ball Grid Array Balls, a surface mount packaging technology used in integrated circuits). BGA balls are small metal solder balls, typically made of tin-lead alloy or lead-free materials, used to provide conductive connections between the chip and the PCB board in a BGA package, while possessing high density, high reliability, and excellent thermal conductivity. This embodiment of the specification achieves signal and current transmission between the antenna element and the signal transceiver component 105 through the array of solder balls 108, realizing efficient signal transmission and reception.

[0065] In one optional embodiment of this specification, an antenna array is also disclosed, which includes a plurality of antenna elements as disclosed in the above embodiments. The antenna array is composed of a plurality of antenna elements arranged at equal intervals and in a manner in which the edges are closely connected.

[0066] Figure 10 This is a structural diagram of a 12*12 antenna array composed of existing antenna elements. It can be seen that the antenna elements are laid out in a tightly connected manner to form an antenna array. The distance from the inductive surface of the grounding component 104 of the upper radiating plate 101 of each antenna element to the upper radiating plate 101 is the same as the distance from the electric surface to the upper radiating plate 101.

[0067] Figure 11 This is an electrical array scanning pattern of a 12x12 antenna array composed of existing antenna elements. The horizontal axis (x) represents the angle, ranging from -200° to 200°, representing the change in the antenna's radiation direction. The vertical axis (Y) represents the achieved gain (dB); a larger value indicates higher gain, i.e., stronger signal strength. Each curve represents a different combination of frequency and polarization angle. The legend in the upper left corner illustrates the gain of this existing antenna element at a specific angle, where m1 is the normal gain of the electrical array scanning, m2 is the 45° gain, and m3 is the -45° gain. It can be seen that the normal gain of the 12x12 array composed of existing antenna elements is 26.70dB, the 45° gain is 25.12dB, and the -45° gain is 25.12dB.

[0068] Figure 12This is a magnetic surface array scanning pattern of a 12*12 antenna array composed of existing antenna elements. The horizontal axis (x) of the array diagram represents the angle, ranging from -200° to 200°, representing the change in the antenna's radiation direction. The vertical axis (Y) represents the achieved gain (dB); a larger value indicates higher gain, i.e., stronger signal strength. Each curve represents a different combination of frequency and polarization angle. The legend in the upper left corner illustrates the gain of this existing antenna element at a specific angle, where m1 is the normal gain of the magnetic surface array scan, m2 is the 45° gain, and m3 is the -45° gain. It can be seen that the normal gain of the 12*12 array composed of existing antenna elements is 26.70dB, the 45° gain is 20.86dB, and the -45° gain is 20.86dB.

[0069] Figure 13 This is a structural diagram of a 12*12 antenna array composed of antenna elements provided in this application. Each antenna element is arranged at equal intervals and laid out in a tightly connected manner to form an antenna array. The distance from the inductive surface of the grounding component 104 of the upper radiating plate 101 of each antenna element to the upper radiating plate 101 is less than the distance from the electric surface to the upper radiating plate 101.

[0070] Figure 14 This is an electrical array scanning pattern of a 12*12 antenna array composed of antenna elements provided in this application. The horizontal axis (x) of the array pattern represents the angle, ranging from -200° to 200°, representing the change in the antenna radiation direction. The vertical axis (Y) represents the achieved gain (dB), with a larger value indicating higher gain and stronger signal strength. Each curve represents a different combination of frequency and polarization angle. The legend in the upper left corner illustrates the gain of the prior art antenna element at a specific angle, where m1 is the normal gain of the electrical array scanning of the antenna element array, m2 is the 45° gain of the electrical array scanning of the antenna element array, and m3 is the -45° gain of the electrical array scanning of the antenna element array. It can be seen that the normal gain of the 12*12 array composed of antenna elements provided in this application is 26.66dB, the 45° gain is 24.51dB, and the -45° gain is 24.51dB.

[0071] Figure 15This is a magnetic surface array scanning pattern of a 12*12 antenna array composed of antenna elements provided in this application. The horizontal axis (x) of the array pattern represents the angle, ranging from -200° to 200°, representing the change in the antenna radiation direction. The vertical axis (Y) represents the achieved gain (dB), with a larger value indicating higher gain and stronger signal strength. Each curve represents a different combination of frequency and polarization angle. The legend in the upper left corner illustrates the gain of the prior art antenna element at a specific angle, where m1 is the normal gain of the magnetic surface array scanning of the antenna element array, m2 is the 45° gain of the magnetic surface array scanning of the antenna element array, and m3 is the -45° gain of the magnetic surface array scanning of the antenna element array. It can be seen that the normal gain of the 12*12 array composed of antenna elements provided in this application is 26.66dB, the 45° gain is 24.29dB, and the -45° gain is 24.29dB.

[0072] As can be seen from the above, the scanning normal gain of the 12*12 array composed of antenna elements provided in this application is basically the same as that of the 12*12 array composed of antenna elements in the prior art. The gain drop of the 12*12 array composed of antenna elements provided in this application at 45° scanning is reduced. Compared with the 20.86dB gain of the 12*12 array composed of antenna elements in the prior art at 45° scanning, the gain of the 12*12 array composed of antenna elements provided in this application at 45° scanning is increased to 24.29dB. Moreover, the difference between the scanning gain of the magnetic surface and the electric surface is very small, which effectively improves the overall performance of the antenna.

[0073] In addition, this specification also includes a communication device that includes the antenna array mentioned in the specification.

[0074] Various embodiments of this specification have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. An antenna element, characterized in that, It includes a double-layer radiating sheet assembly, a signal transceiver assembly, a feed pin, and a grounding assembly; the double-layer radiating sheet assembly includes an upper radiating sheet and a lower radiating sheet. The grounding component surrounds the upper radiating plate, and the distance between the magnetic surface of the grounding component and the edge of the upper radiating plate is smaller than the distance between the electric surface of the grounding component and the edge of the upper radiating plate. One end of the feed pin is connected to the lower radiating plate, and the other end is connected to the signal transceiver assembly.

2. The antenna element according to claim 1, characterized in that, The magnetic surface has an irregular shape.

3. The antenna element according to claim 2, characterized in that, The irregular shape includes: serrated or wavy.

4. The antenna element according to claim 1, characterized in that, The electrical surface is linear.

5. The antenna element according to claim 1, characterized in that, The upper radiating sheet and the lower radiating sheet are located on both sides of the insulating layer plate.

6. The antenna element according to claim 1, characterized in that, The feed needle is surrounded by columnar components, which form a near-coaxial structure with the feed needle; one end of the columnar components is connected to the lower radiating plate, and the other end is grounded.

7. The antenna element according to claim 6, characterized in that, The feed pin is connected to the signal transceiver assembly via a stripline; one end of the stripline is connected to the feed pin, and the other end is soldered to the signal transceiver assembly via an array of solder balls.

8. An antenna array, characterized in that, It includes multiple antenna elements as described in any one of claims 1 to 7.

9. The antenna array according to claim 8, characterized in that, The antenna elements are arranged in an array at equal intervals.

10. A communication device, characterized in that, Including the antenna array as described in claim 8 or 9.

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