Millimeter wave pattern reconfigurable antenna and reconfiguration method

Abstract

This invention provides a millimeter-wave pattern reconfigurable antenna and reconfigurable method, belonging to the field of wireless communication technology. It integrates multiple radiating structures onto a single transmission line structure. By loading control elements onto the antenna structure for impedance modulation, one radiating structure is in a matched state while the others are in a mismatched state, achieving time-domain reconfigurable cooperative excitation of multiple radiation modes by a single feed structure. Energy enters through the feed port and radiates outward through the matched radiating structures. This invention enables time-domain reconfigurable cooperative excitation of multiple radiation modes by a single feed structure; allows for free and flexible switching between multiple modes; features a simple and compact DC circuit; achieves stable radiation characteristics; has a compact structure, high integration, small footprint, and is easy to fabricate; possesses high gain and efficiency, good operating bandwidth, and high spatial coverage.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, specifically to a millimeter-wave pattern reconfigurable antenna and a reconfigurable method. Background Technology

[0002] With the rapid development of wireless communication, the demand for communication systems is constantly increasing. The number of radio frequency system devices and modern communication electronic equipment has increased significantly. The scarcity of traditional wireless communication system frequency bands (below 6 GHz) and the insufficient space for communication system operation are increasingly attracting the attention of researchers both domestically and internationally. Millimeter-wave bands, with their larger available signal bandwidth, can effectively solve the problem of spectrum resource scarcity and play a crucial role in next-generation wireless communication applications. In the future, they will be widely used in 5G communication, industrial IoT, intelligent transportation networks, radar imaging, and other fields. Compared to low-frequency microwave bands, millimeter waves have shorter wavelengths and greater path propagation loss. Millimeter-wave components are more susceptible to the influence of the integration platform and the operating environment, including radomes, other structures of terminal equipment, users, and equipment placement. These factors can significantly affect the radiation and impedance characteristics of millimeter-wave passive components, even leading to functional failure. To reduce the impact of equipment and the environment on antenna performance, multiple millimeter-wave antenna arrays are typically placed in different locations on the equipment to improve antenna coverage efficiency. However, multiple subarrays occupy a large amount of space and require multiple feed ports, greatly increasing the difficulty of integrating millimeter-wave antennas into the equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a millimeter-wave pattern reconfigurable antenna and a reconfigurable method to solve at least one of the technical problems existing in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention provides a millimeter-wave pattern reconfigurable antenna, comprising:

[0006] Multiple radiating structures are integrated onto the same transmission line structure. By loading control elements onto the antenna structure for impedance modulation, one radiating structure is in a matched state while the others are in a mismatched state. This enables a single feed structure to provide time-domain reconfigurable cooperative excitation for multiple radiation modes. Energy enters through the feed port and radiates outward through the matched radiating structures.

[0007] The plurality of radiation structures include: an end-radiating structure and a side-radiating structure symmetrically disposed on both sides of the end-radiating structure and connected to the end-radiating structure.

[0008] Preferably, the end-emitting radiation structure includes a transmission line structure with open-circuit termination, an electric dipole connected to the transmission line structure, and an electric dipole metal patch connected to the electric dipole via an end-emitting diode. The electric dipole metal patch is located above the electric dipole. The end-emitting diode is connected to a vertical short-circuit metal post, and the vertical short-circuit metal post is connected to two metal strips. The long side of the metal strips leads out an end-emitting DC circuit.

[0009] Preferably, the side-emitting radiation structure includes four upper metal patches of the side-emitting slot patch antenna, located on both sides of the side-emitting slot, with two on each side. The upper metal patches on both sides of the side-emitting slot are connected by side-emitting diodes. The upper metal patches are connected to the lower metal patches through side-emitting metal pillars, and the lower metal patches lead out the side-emitting DC circuit.

[0010] Preferably, the transmission line structure comprises a substrate integrated waveguide metal pillar integrated in a second dielectric substrate and metal layers located at both ends of the substrate integrated waveguide metal pillar; wherein, the two sides of the second dielectric substrate are a first dielectric substrate and a third dielectric substrate, the first dielectric substrate and the second dielectric substrate are bonded together by a first adhesive sheet, and the second dielectric substrate and the third dielectric substrate are bonded together by a second adhesive sheet.

[0011] The preferred terminal open circuit serves as the magnetic dipole. One half of the electric dipole is integrated into the first dielectric substrate and the first adhesive sheet, and connected to the metal layer. The other half of the electric dipole is integrated into the third dielectric substrate and the second adhesive sheet, and connected to the metal layer. The two half arms are symmetrical about the second dielectric substrate.

[0012] Preferably, the two electric dipole metal patches are located in the first dielectric substrate and the third dielectric substrate, respectively, and the two electric dipole metal patches are symmetrical about the second dielectric substrate.

[0013] Preferably, the two metal strips are located in the second dielectric substrate, and the vertical short-circuit metal pillar is integrated in the first dielectric substrate, the first adhesive sheet, the second dielectric substrate, the second adhesive sheet and the third dielectric substrate, connecting the two metal strips.

[0014] The beneficial effects of this invention are: it can realize time-domain reconfigurable cooperative excitation of multiple radiation modes by a single feeding structure; it can realize free and flexible switching of multiple modes; it has a simple and compact DC circuit; it can achieve stable radiation characteristics; it has a compact structure, high integration, small space occupation, and is easy to process and implement; it has high gain and efficiency as well as good operating bandwidth; and it has high spatial coverage.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the millimeter-wave pattern reconfiguration method according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the pattern-reconfigurable antenna according to an embodiment of the present invention.

[0019] Figure 3 This is a side view of the millimeter-wave reconfigurable antenna according to an embodiment of the present invention.

[0020] Figure 4 This is a structural diagram of the side-radiating structure described in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the position of the side-emitting diode according to an embodiment of the present invention.

[0022] Figure 6 This is a side-emitting DC circuit diagram according to an embodiment of the present invention.

[0023] Figure 7 This is a structural diagram of the end-radiating structure described in an embodiment of the present invention.

[0024] Figure 8 This is a diagram of the transmission line structure according to an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the end-radio dipole structure described in an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the position of the terminal emitter diode according to an embodiment of the present invention.

[0027] Figure 11 This is a diagram of the end-emitting DC circuit according to an embodiment of the present invention.

[0028] Figure 12 The graph shows the reflection coefficient and efficiency results of the three modes of the millimeter-wave pattern reconfigurable antenna described in this embodiment of the invention.

[0029] Figure 13 This is a diagram showing the gain results of the three modes of the millimeter-wave pattern reconfigurable antenna described in an embodiment of the present invention.

[0030] Figure 14The image shows the E-plane radiation patterns at different frequency points in three modes of the millimeter-wave pattern reconfigurable antenna described in this embodiment of the invention.

[0031] Figure 15 The H-plane radiation patterns at different frequency points of the three modes of the millimeter-wave pattern reconfigurable antenna described in this embodiment of the invention are shown.

[0032] Wherein, 1-first dielectric substrate; 2-first adhesive sheet; 3-second dielectric substrate; 4-second adhesive sheet; 5-third dielectric substrate; 6-metal layer; 7-feed port; 8-first side-emitting radiation structure; 9-second side-emitting radiation structure; 10-end-emitting radiation structure; 11-transmission line structure; 12-side-emitting diode; 13-upper metal patch of side-emitting slot patch antenna; 14-lower metal patch of side-emitting slot patch antenna; 15-metal pillar of side-emitting slot patch antenna; 16-side-emitting DC circuit; 17-electric dipole metal patch; 18-electric dipole; 19-vertical short-circuit metal pillar; 20-metal strip; 21-end-emitting DC circuit; 22-end-emitting diode; 23-side-emitting slot; 24-substrate integrated waveguide metal pillar. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0035] It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as here.

[0036] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or groups thereof.

[0037] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0038] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise expressly specified.

[0039] In the description of this specification, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this technology.

[0040] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of these terms in this art according to the specific circumstances.

[0041] To facilitate understanding of the present invention, the present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments. However, the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0042] Those skilled in the art should understand that the accompanying drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily essential for implementing the present invention.

[0043] Example 1

[0044] In this embodiment 1, a millimeter-wave radiation pattern reconfigurable method is provided, combined with Figures 1 to 11 As shown, a millimeter-wave pattern reconfigurable antenna was designed based on this method to address the shortcomings of existing technologies.

[0045] The millimeter-wave pattern reconfiguration method described in Embodiment 1 integrates multiple radiating antenna structures onto the same transmission line. By loading control elements such as diodes onto the antenna structures for impedance regulation, one radiating structure is in a matched state while the other radiating structures are in a mismatched state. This enables time-domain reconfigurable cooperative excitation of multiple radiating modes by a single feed structure.

[0046] In this embodiment 1, based on the above-described method principle, a millimeter-wave pattern reconfigurable antenna is designed. The millimeter-wave pattern reconfigurable antenna mainly includes a first side-fired radiating structure 8, a second side-fired radiating structure 9, and an end-fired radiating structure 10, all integrated within a transmission line structure 11. The first and second side-fired radiating structures can be any type of side-fired antenna, such as a slot antenna, patch antenna, dipole antenna, or magnetoelectric dipole antenna; they can be the same type or different. In this invention, the same slot patch antenna is used. The end-fired radiating structure can be any type of end-fired antenna. In this invention, an end-fired magnetoelectric dipole antenna is used. The transmission line structure can be a microstrip line, waveguide, coaxial line, or other transmission structure. In this invention, a substrate-integrated waveguide is used. Energy enters through the feed port 7 and radiates outwards through the matched radiating structure.

[0047] In this embodiment, a slot patch antenna is used as the side-firing structure. The first side-firing radiation structure is the same as the second side-firing radiation structure. The first side-firing radiation structure 8 and the second side-firing radiation structure 9 are symmetrical about the second dielectric substrate 3. The side-firing radiation structure consists of an upper metal patch 13, a lower metal patch 14, a side-firing metal pillar 15, a side-firing slot 23, a side-firing diode 12, and a side-firing DC circuit 16. The four upper metal patches 13 of the side-firing slot patch antenna are located on the first dielectric substrate 1, and the four lower metal patches 14 are located below the first dielectric substrate 1. The two are connected by four sets of metal pillars 15, and the four upper metal patches 13 are symmetrical about the side-firing slots. The side-firing slot 23 is located in the metal layer on the second dielectric substrate 3. The first dielectric substrate 1 and the second dielectric substrate 3 are bonded together by a first adhesive sheet 2. The side-emitting diode 12 is located on the upper metal patch and connects to the upper metal patches on both sides of the long side of the slot. The side-emitting DC circuit 16 is directly led out from the lower metal patch 14 of the side-emitting slot patch antenna.

[0048] In this embodiment 1, an end-fire magnetoelectric dipole antenna is used as the end-fire radiation structure. It includes a transmission line structure 11 with an open-circuit termination, an electric dipole metal patch 17, an electric dipole 18, a vertical short-circuit metal pillar 19, a metal strip 20, an end-fire DC circuit 21, and an end-fire diode 22. The transmission line structure 11 consists of a substrate-integrated waveguide metal pillar 24 integrated in the second dielectric substrate 3 and upper and lower metal layers 6, with an open-circuit termination serving as the magnetic dipole. One half of the electric dipole 18 is integrated into the first dielectric substrate 1 and the first adhesive sheet 2, with one end connected to the metal layer 6. The other half is integrated into the third dielectric substrate 5 and the second adhesive sheet 4, with one end connected to the metal layer 6, symmetrical about the second dielectric substrate 3. The electric dipole metal patch 17 is located above the electric dipole 18 (on the first dielectric substrate 1), symmetrical about the second dielectric substrate 3. The electric dipole metal patch 17 is located above the electric dipole 18 (on the first dielectric substrate 1), symmetrically positioned about the second dielectric substrate 3. Two metal strips 20 are located above and below the second dielectric substrate 3, separated from the metal layer 6 by a distance and not connected. A vertical short-circuit metal post 19 is integrated into the first dielectric substrate 1, the first adhesive sheet 2, the second dielectric substrate 3, the second adhesive sheet 4, and the third dielectric substrate 5, connecting the two metal strips 20. One end of the terminal-emitting diode 22 is located on the vertical short-circuit metal post 19, and the other end is located on the electric dipole metal patch 17. A terminal-emitting DC circuit 21 extends from the metal strip 20 along its long side.

[0049] Example 2

[0050] In this second embodiment, a millimeter-wave pattern reconfigurable antenna is provided. Figure 2 This is a schematic diagram of the three-dimensional structure of the millimeter-wave pattern reconfigurable antenna in an embodiment. Figure 3 Side view of a millimeter-wave reconfigurable antenna. It includes a first side-emitting radiating structure 8, a second side-emitting radiating structure 9, and an end-emitting radiating structure 10, all integrated within a transmission line structure 11. Both the first and second radiating structures are slotted patch antennas. The end-emitting radiating structure is an end-emitting magnetoelectric dipole antenna. The transmission line structure uses a substrate-integrated waveguide metal pillar. Energy enters through the feed port 7. Adjusting the diodes on the radiating structures matches one of them, while the other two are mismatched. Energy is then radiated outwards through the matched radiating structure.

[0051] Figure 4The first and second side-emitting structures are identical, forming a side-emitting structure. The first and second side-emitting structures are symmetrical about the second dielectric substrate 3. Each side-emitting structure consists of an upper metal patch 13, a lower metal patch 14, metal pillars 15, a side-emitting slot 23, a side-emitting diode 12, and a side-emitting DC circuit 16. The four upper metal patches 13 are located on the first dielectric substrate 1, and the four lower metal patches 14 are located below the first dielectric substrate 1. They are connected by four sets of metal pillars 15, each set containing three pillars. The four upper metal patches 13 are symmetrical about the side-emitting slot 23, with corresponding positions for the upper and lower metal patches. The side-emitting slot 23 is located in the metal layer on the second dielectric substrate 3, and its length is λ / 2. The first dielectric substrate 1 and the second dielectric substrate 3 are bonded together by the first adhesive sheet 2. Two side-emitting diodes 12 are located on the upper metal patch 13 of the side-emitting slot patch antenna, as shown below. Figure 5 As shown, the positive terminal is located on the upper metal patch 13 of the side-fire slot patch antenna on one side of the long side of the side-fire slot 23, and the negative terminal is located on the upper metal patch 13 of the side-fire slot patch antenna on the other side of the long side of the side-fire slot 23, connecting the four upper metal patches 13 of the side-fire slot patch antenna on both sides of the long side of the side-fire slot 23. The side-fire DC circuit 16 is directly led out from the lower metal patch 14 of the side-fire slot patch antenna, with the positive and negative terminals converging into one path, located on both sides of the long side of the side-fire slot 23, as shown. Figure 6 As shown.

[0052] Figure 7 This is an end-emitting radiating structure. It includes an open-circuit transmission line structure 11, an electric dipole metal patch 17, an electric dipole 18, a vertical short-circuit metal pillar 19, a metal strip 20, an end-emitting DC circuit 21, and an end-emitting diode 22. (Example) Figure 8 The transmission line structure 11 consists of metal pillars 24 integrated in the second dielectric substrate 3 and upper and lower metal layers 6, with an open-circuit termination serving as a magnetic dipole. For example... Figure 9 The electric dipole 18 is integrated into the first dielectric substrate 1 and the first adhesive sheet 2. One end is connected to the metal layer 6, and the other end is connected to the electric dipole metal patch 17 with a radius of 0.8 mm. The other half is integrated into the third dielectric substrate 5 and the second adhesive sheet 4. Similarly, one end is connected to the metal layer 6, and the other end is connected to the electric dipole metal patch 17 with a radius of 0.8 mm. The two arms of the electric dipole are symmetrical about the second dielectric substrate 3.

[0053] In this embodiment, two pairs of electric dipoles are used, with a distance of 1 mm between them. The metal patches at both ends of the electric dipoles are short-circuited by metal strips with a width of 0.1 mm. The two metal strips 20 are located above and below the second dielectric substrate 3, with a distance (0.5 mm) between them and the metal layer 6, and are not connected. Vertical short-circuit metal posts 19 are integrated into the first dielectric substrate 1, the first adhesive sheet 2, the second dielectric substrate 3, the second adhesive sheet 4, and the third dielectric substrate 5, connecting the two metal strips 20. Figure 10 The positive terminal of the terminal-emitting diode 22 is located on the vertically short-circuited metal pillar 19, and the negative terminal is located on the electric dipole metal patch 17, which is connected to the metal layer 6 (antenna ground) through the dipole. Figure 11 The DC-DC circuit 21 is led out from the metal strip 20 along the long side of the metal strip.

[0054] When one DC voltage is applied to one DC line on the first side-emitting radiation structure and the other is connected to DC ground, the diode on the first side-emitting radiation structure is turned on, the first side-emitting radiation structure is in a matched state, and the other two radiation structures are in a mismatched state. The radiation direction is +z side-emitting, which is mode 1.

[0055] When one DC line on the second side-emitting structure is connected to DC voltage and the other is connected to DC ground, the diode on the second side-emitting structure is turned on, the second side-emitting structure is in a matched state, and the other two emitting structures are in a mismatched state. The radiation direction is -z side-emitting, which is mode 2.

[0056] When a DC voltage is applied to one of the DC lines on the end-emitting radiation structure and the metal layer is connected to DC ground, the diode on the end-emitting radiation structure is turned on, the end-emitting radiation structure is in a matched state, and the other two radiation structures are in a mismatched state. The radiation direction is end-emitting, which is mode 3.

[0057] Figure 12 The results show the reflection coefficients and efficiency of the three modes of the millimeter-wave pattern reconfigurable antenna. The results indicate that the reflection coefficients of mode 1 and mode 2 antennas |S 11 The operating bandwidth of |<-10 dB is 21% (26.3-32.3 GHz). Within this bandwidth, the antenna efficiency can reach over 75%. Due to the symmetrical antenna structure, the results for Mode 1 and Mode 2 are essentially the same. Mode 3 antenna |S 11 The operating bandwidth of the antenna is 26.1% (26-33.8 GHz) with a bandwidth of -10dB. Within this operating bandwidth, the antenna efficiency is 85%-89%. The common bandwidth of the three modes can reach 21% (26.3-32.3 GHz), with an efficiency of over 75%. Figure 13The gain results for the three modes of the millimeter-wave pattern reconfigurable antenna are shown. The results indicate that the side-fire (mode 1 and mode 2) gain is 4-6.9 dBi in the common operating frequency band, and the end-fire (mode 3) gain is 4.2-7.1 dBi in the common operating frequency band. Figure 14 It is the E-plane radiation pattern of three modes of a millimeter-wave pattern reconfigurable antenna at different frequencies. Figure 15 This is the H-plane radiation pattern of the millimeter-wave pattern reconfigurable antenna at different frequencies for three modes. In the E-plane, the 3 dB beamwidth of the three modes can cover a total of 270° (from 315° to 225°) at 27 GHz and 29 GHz, and 230° (from 315°-30°, from 50° to 130°, and from 150° to 225°) at 31 GHz. The combined radiation of the three modes can cover a large area.

[0058] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that, based on the technical solutions disclosed in the present invention, various modifications or variations that can be made by those skilled in the art without creative effort should be included within the scope of protection of the present invention.

Claims

1. A millimeter-wave pattern reconfigurable antenna, characterized in that, include: An end-radiating structure, and two identical side-radiating structures symmetrically disposed on both sides of the end-radiating structure; The end-radiating structure and the two side-radiating structures are integrated on a single transmission line. The end-emitting radiation structure includes a transmission line structure with open-circuit terminals, an electric dipole connected to the transmission line structure, an electric dipole metal patch connected to the electric dipole, and the electric dipole metal patch located above the electric dipole; the end-emitting diode connects the electric dipole metal patch and a vertical short-circuit metal post, the vertical short-circuit metal post connects to two metal strips, and the long side of the metal strips leads out an end-emitting DC circuit; The side-firing structure includes four upper metal patches for the side-firing slot patch antenna, located on both sides of the side-firing slot, with two patches on each side. The upper metal patches on both sides of the side-firing slot are connected by side-firing diodes. The upper metal patches are connected to the lower metal patches through side-firing metal pillars, and the lower metal patches lead out the side-firing DC circuit. The transmission line structure comprises a substrate integrated waveguide metal pillar integrated in a second dielectric substrate and metal layers located at both ends of the substrate integrated waveguide metal pillar. The transmission line structure is symmetrical vertically. The second dielectric substrate has a first dielectric substrate and a third dielectric substrate on both sides. The first dielectric substrate and the second dielectric substrate are bonded together by a first adhesive sheet, and the second dielectric substrate and the third dielectric substrate are bonded together by a second adhesive sheet.

2. The millimeter-wave pattern reconfigurable antenna according to claim 1, characterized in that, The terminal is open as a magnetic dipole. One half of the electric dipole is integrated into the first dielectric substrate and the first adhesive sheet, and connected to the metal layer. The other half of the electric dipole is integrated into the third dielectric substrate and the second adhesive sheet, and connected to the metal layer. The two half arms are symmetrical about the second dielectric substrate.

3. The millimeter-wave pattern reconfigurable antenna according to claim 2, characterized in that, Two electric dipole metal patches are located in the first dielectric substrate and the third dielectric substrate, respectively, and the two electric dipole metal patches are symmetrical about the second dielectric substrate.

4. The millimeter-wave pattern reconfigurable antenna according to claim 3, characterized in that, Two metal strips are located in the second dielectric substrate, and vertical short-circuit metal pillars are integrated in the first dielectric substrate, the first adhesive sheet, the second dielectric substrate, the second adhesive sheet, and the third dielectric substrate, connecting the two metal strips.

5. A millimeter-wave pattern reconfiguration method based on a millimeter-wave pattern reconfigurable antenna as described in any one of claims 1-4, characterized in that, include: By integrating multiple radiating structures onto the same transmission line structure and applying control elements to the antenna structure for impedance regulation, one radiating structure is in a matched state while the others are in a mismatched state, thus achieving time-domain reconfigurable cooperative excitation of multiple radiating modes by a single feed structure. Energy enters through the feed port and radiates outward through the matching radiating structure.

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