Dual frequency beautifying antenna

Abstract

The application provides a dual-frequency beautifying antenna, and relates to the technical field of communication antennas. The dual-frequency beautifying antenna comprises a dielectric substrate and a feeding structure. The upper surface of the dielectric substrate is provided with a metal layer. The metal layer is etched to form a gap structure. The gap structure comprises a first gap and two second gaps. The first gap is a continuous closed ring structure. The first gap separates the metal layer into a first metal part located on the inner side of the first gap and a second metal part located on the outer side of the first gap. The two second gaps are respectively arranged on the two sides of the first gap. The two second gaps are located on the outer side of the first gap and are in communication with the first gap. The feeding structure is arranged on the lower surface of the dielectric substrate. The feeding structure penetrates through the dielectric substrate and is electrically connected with the first metal part, so as to excite the first gap and the two second gaps to produce resonance. The dual-frequency beautifying antenna provided by the application can realize dual-frequency impedance matching and gain stabilization while keeping a low profile height and a compact planar size.

Description

Technical Field

[0001] This application relates to the field of communication antenna technology, and in particular to a dual-band aesthetic antenna. Background Technology

[0002] With the large-scale deployment of fifth-generation mobile communication systems, aesthetically pleasing antennas need to achieve multi-band collaborative coverage in complex propagation environments. At the same time, they impose dual constraints on structural form, namely low-profile design and low-cost manufacturing, in order to reduce wind resistance, improve installation flexibility, and adapt to the needs of large-scale applications.

[0003] In existing technologies, aesthetically pleasing antennas typically control two operating frequency bands separately through radiating elements on different dielectric substrates. However, the multi-layer structure leads to an increase in profile height, resulting in a significant increase in material and manufacturing costs.

[0004] Another common approach is to achieve dual-frequency response by etching slots on the radiating patch or ground plane. However, existing slot designs require a large radiating aperture or complex slot combinations to ensure impedance matching, making it difficult to compress the planar size. Furthermore, it is often difficult to achieve both dual-band matching performance, and the high-frequency band is prone to problems such as gain reduction or insufficient bandwidth. Summary of the Invention

[0005] In view of the above problems, this application provides a dual-band aesthetic antenna that can achieve dual-band impedance matching and gain stability while maintaining a low profile height and compact planar dimensions.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] This application provides a dual-band aesthetic antenna, comprising: a dielectric substrate, wherein a metal layer is disposed on the upper surface of the dielectric substrate; the metal layer is etched to form a slot structure, the slot structure comprising: a first slot and two second slots, the first slot being a continuously closed annular structure; the first slot dividing the metal layer into a first metal portion located inside the first slot and a second metal portion located outside the first slot;

[0008] Two second gaps are respectively set on both sides of the first gap, and both second gaps are located outside the first gap and are connected to the first gap;

[0009] A power supply structure is disposed on the lower surface of a dielectric substrate and includes an outer conductor, an inner conductor, and a power supply conductor. The inner conductor is coaxially disposed inside the outer conductor, and the outer conductor is grounded. One end of the power supply conductor is connected to the inner conductor, and the other end of the power supply conductor passes through the dielectric substrate and is electrically connected to a first metal part. The power supply conductor is configured to transmit the power supply signal from the inner conductor to the first metal part to excite the slot structure to resonate.

[0010] In one possible implementation, the feed structure further includes a transition section, one end of which is connected to the inner conductor and the other end of which is connected to the feed conductor. The transition section is configured to adjust the impedance matching of the feed structure.

[0011] In one possible implementation, the first slit has a first centerline extending along a first direction and a second centerline extending along a second direction; the first centerline and the second centerline intersect at the geometric center of the first slit; the two second slits are symmetrical about the first centerline and about the second centerline; wherein the first direction, the second direction, and the thickness direction of the dielectric substrate are perpendicular to each other.

[0012] In one possible implementation, the two second gaps are rectangular gaps, and the two second gaps extend along a second direction.

[0013] In one possible implementation, the first gap is an annular gap.

[0014] In one possible implementation, the electrical connection between the feed conductor and the first metal part is located on the first center line.

[0015] In one possible implementation, it also includes:

[0016] At least one metal post, one end of which penetrates the dielectric substrate and is electrically connected to the second metal part, and the other end of which is used for grounding.

[0017] In one possible implementation, a transparent protective cover is also included, which is disposed over the dielectric substrate and the metal layer.

[0018] In one possible implementation, at least a portion of the metal layer and at least a portion of the upper surface of the dielectric substrate are provided with a conductive coating.

[0019] In one possible implementation, the conductive coating is a removable conductive patch.

[0020] The dual-band aesthetic antenna provided in this application includes a dielectric substrate and a feeding structure. A metal layer is disposed on the upper surface of the dielectric substrate. The metal layer is etched to form a slot structure, which includes a first slot and two second slots. The slot structure can be used to achieve frequency band division of the dual-band aesthetic antenna. The first slot is a continuously closed ring structure, serving as the main resonant unit for generating stable resonance in the low-frequency band. The first slot divides the metal layer into a first metal portion located inside the first slot and a second metal portion located outside the first slot. The first metal portion is the injection region for the feeding energy, and the second metal portion is the ground reference plane of the dual-band aesthetic antenna.

[0021] Two second slots are respectively disposed on both sides of the first slot, and both second slots are located outside the first slot and are connected to the first slot. The two second slots can be used as notch filters to introduce transmission zeros in the high-frequency band, separating the high-frequency signal from the passband to achieve dual-frequency coverage.

[0022] A feeding structure is disposed on the lower surface of the dielectric substrate and is used to input external signals to the dual-band aesthetic antenna. The feeding structure includes an outer conductor, an inner conductor, and a feeding conductor; the inner conductor is coaxially disposed inside the outer conductor, and the outer conductor is grounded to provide a stable RF reference ground and shield external electromagnetic interference. One end of the feeding conductor is connected to the inner conductor, and the other end of the feeding conductor passes through the dielectric substrate and is electrically connected to the first metal part; the feeding conductor is configured to transmit the feeding signal from the inner conductor to the first metal part, thereby exciting the first slot and two second slots to resonate. The dual-band aesthetic antenna provided in this application can achieve dual-band impedance matching and gain stability while maintaining a low profile height and compact planar dimensions. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the dual-band aesthetic antenna provided in the embodiments of this application;

[0025] Figure 2 For along Figure 1 Sectional view of line AA in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of a dual-band aesthetic antenna including a conductive coating, as provided in the embodiments of this application.

[0027] Figure 4 The S-parameter curve of the dual-band aesthetic antenna provided in the embodiments of this application;

[0028] Figure 5 The radiation pattern of the dual-band aesthetic antenna provided in this embodiment of the application at the 2.7 GHz frequency point;

[0029] Figure 6 The radiation pattern of the dual-band beautified antenna provided in this application at the 3.9 GHz frequency point.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10- Dual-band aesthetic antenna;

[0032] 100 - Dielectric substrate; 200 - Metal layer; 200a - First metal part; 200b - Second metal part; 300 - Feed structure; 400 - Metal pillar; 500 - Conductive coating;

[0033] 210 - Gap structure; 310 - Outer conductor; 320 - Inner conductor; 330 - Feed conductor; 340 - Transition section; 510 - First coating section; 520 - Second coating section; 530 - Third coating section; 540 - Fourth coating section;

[0034] 211 - First gap; 212 - Second gap;

[0035] P - Geometric center position; X - First direction; Y - Second direction; Z - Thickness direction. Detailed Implementation

[0036] As described in the background section, with the widespread deployment of 5G mobile communication systems, base station antennas, as core equipment for wireless coverage, face diverse application demands in terms of performance and form. On the one hand, operators need to achieve multi-band coordinated coverage in complex propagation environments, placing clear requirements on the dual-band or multi-band operating capabilities of antennas. On the other hand, the structural form of base station antennas needs to adapt to the constraints of different installation scenarios. Low-profile design is beneficial for reducing wind resistance, minimizing visual impact, and improving installation flexibility, while low-cost manufacturing is a prerequisite for large-scale deployment. Therefore, achieving antenna elements with good dual-band operating characteristics while maintaining a low-profile structure and controllable cost has become an important research direction in the field of base station antennas.

[0037] In existing dual-band aesthetic antenna designs, multi-layer patch structures or stacked radiating elements are typically used to achieve dual-band resonance. This approach controls two operating frequency bands separately by placing radiating patches of different sizes on different dielectric substrates.

[0038] However, multi-layer structures increase the overall profile height of the antenna, and the stacking of multi-layer dielectric substrates and the complexity of interlayer feeding structures lead to a significant increase in material and manufacturing costs, making it difficult to meet the dual requirements of low profile and low cost.

[0039] Another common approach is to achieve dual-frequency operation using a single-layer dielectric substrate combined with a slotted or slit structure. This approach achieves dual-frequency response in a single-layer structure by etching slots of a specific shape into the radiating patch or ground plane, introducing multiple resonant paths or notch characteristics.

[0040] However, existing slotted structure designs typically require large radiating apertures or complex slot combinations to ensure impedance matching across both frequency bands, making it difficult to compress the planar dimensions of the antenna element. Furthermore, slotted structures present challenges in maintaining stable control of the resonant frequencies across both frequency bands, and impedance matching performance within the two operating bands is often difficult to achieve simultaneously. This is especially problematic at higher frequencies, where gain reduction or insufficient bandwidth can easily occur, making it impossible to simultaneously achieve good matching and stable radiation across both passbands within a compact planar dimension.

[0041] In view of this, embodiments of this application provide a dual-band aesthetic antenna.

[0042] The dual-band aesthetic antenna provided in this application includes a dielectric substrate and a feeding structure. A metal layer is disposed on the upper surface of the dielectric substrate. The metal layer is etched to form a slot structure, which includes a first slot and two second slots. The slot structure can be used to achieve frequency band division of the dual-band aesthetic antenna. The first slot is a continuously closed ring structure, serving as the main resonant unit for generating stable resonance in the low-frequency band. The first slot divides the metal layer into a first metal portion located inside the first slot and a second metal portion located outside the first slot. The first metal portion is the injection region for the feeding energy, and the second metal portion is the ground reference plane of the dual-band aesthetic antenna.

[0043] Two second slots are respectively disposed on both sides of the first slot, and both second slots are located outside the first slot and are connected to the first slot. The two second slots can be used as notch filters to introduce transmission zeros in the high-frequency band, separating the high-frequency signal from the passband to achieve dual-frequency coverage.

[0044] A feeding structure is disposed on the lower surface of the dielectric substrate and is used to input external signals to the dual-band aesthetic antenna. The feeding structure includes an outer conductor, an inner conductor, and a feeding conductor; the inner conductor is coaxially disposed inside the outer conductor, and the outer conductor is grounded to provide a stable RF reference ground and shield external electromagnetic interference. One end of the feeding conductor is connected to the inner conductor, and the other end of the feeding conductor passes through the dielectric substrate and is electrically connected to the first metal part; the feeding conductor is configured to transmit the feeding signal from the inner conductor to the first metal part, thereby exciting the first slot and two second slots to resonate. The dual-band aesthetic antenna provided in this application can achieve dual-band impedance matching and gain stability while maintaining a low profile height and compact planar dimensions. To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Figure 1 This is a schematic diagram of the structure of the dual-band aesthetic antenna provided in an embodiment of this application. The dual-band aesthetic antenna 10 provided in this application can be used in a base station system with multi-frequency collaborative coverage in a fifth-generation mobile communication network. For example, the dual-band aesthetic antenna 10 can be used as a macro base station antenna unit, deployed in urban core areas, transportation hubs, and high-density residential areas to meet the requirement of simultaneous coverage of dual frequency bands and solve the problem of collaborative networking between different operators or different network standards.

[0046] The dual-band aesthetic antenna 10 can also be used in large venues, commercial complexes, underground spaces and other places. Utilizing its compact structure and stable gain, it can achieve efficient transmission and low-loss coverage of dual-band signals in limited spaces, ensuring seamless access and high-speed data service experience for user terminals in multiple frequency bands.

[0047] The above is merely an illustrative description of the application scenarios of the dual-band aesthetic antenna 10 in this application embodiment, and is not intended to limit the application scenarios of the dual-band aesthetic antenna 10 in this application embodiment.

[0048] Figure 2 For along Figure 1 Cross-sectional view along line AA. (Refer to...) Figure 2 The dual-band aesthetic antenna 10 includes a dielectric substrate 100, which is the core supporting structure of the dual-band aesthetic antenna 10. For example, the dielectric substrate 100 can be made of high-frequency modified FR-4 composite material or a polytetrafluoroethylene (PTFE) plate filled with special ceramics. These materials have stable dielectric properties and low dielectric loss within the operating frequency band, which can reduce the energy attenuation of the signal propagating inside the dielectric substrate 100, thereby ensuring the high radiation efficiency of the dual-band antenna.

[0049] In this embodiment, the thickness of the dielectric substrate 100 can be optimized according to impedance matching and bandwidth requirements. For example, the thickness of the dielectric substrate 100 can be between 1.0 mm and 2.0 mm, so that the dual-band aesthetic antenna 10 can meet the expected resonant operating conditions while ensuring mechanical strength.

[0050] Continue to refer to Figure 2 A metal layer 200 is disposed on the upper surface of the dielectric substrate 100. The metal layer 200 is used to form the radiating structure and electromagnetic wave transmission and reception function of the dual-band aesthetic antenna 10. For example, the metal layer 200 can be made of conductive materials such as copper foil, aluminum foil or silver paste conductive layer, and formed by chemical etching, laser etching or printing process.

[0051] Reference Figure 1The metal layer 200 is etched to form a slot structure 210, which can be used to achieve frequency band segmentation of the dual-band aesthetic antenna 10. The slot structure 210 includes a first slot 211 and two second slots 212. The first slot 211 is a continuously closed ring structure, which serves as the main resonant unit to generate stable resonance in the low-frequency band. The ring structure of the first slot 211 helps to concentrate radiated energy and reduce signal dispersion loss, thereby ensuring stable radiation efficiency and gain output in the low-frequency band.

[0052] Two second slits 212 are respectively disposed on both sides of the first slit 211. For example, the two second slits 212 can be respectively disposed on both sides of the first slit 211 along the first direction X, and each second slit 212 is located outside the first slit 211 and communicates with the first slit 211, serving as a notch filter unit to introduce transmission zeros in the high-frequency band, thereby separating the high-frequency band signal from the passband and achieving dual-frequency coverage.

[0053] The first slit 211 has a first center line extending along a first direction X, and a second center line extending along a second direction Y. The first center line and the second center line intersect at the geometric center P of the first slit 211. The two second slits 212 are symmetrical about the first center line and about the second center line. In this embodiment, the first direction X, the second direction Y, and the thickness direction Z of the dielectric substrate 100 are mutually perpendicular.

[0054] This configuration allows the electromagnetic coupling strength of the two second slits 212 at the notch frequency to be more consistent, which helps to form a steep transmission zero point, thereby improving the isolation between the two frequency bands, reducing mutual interference between frequency bands, and ensuring signal quality when multiple frequencies work together.

[0055] Furthermore, the symmetrical arrangement of the two second slots 212 about both the first and second center lines ensures that the surface current distribution in the high-frequency resonant mode remains balanced relative to the antenna's geometric center, thereby maintaining the symmetry of the antenna's radiation pattern. This prevents beam pointing deviation or pattern distortion caused by structural offset, ensuring signal uniformity within the dual-band coverage area. Simultaneously, the symmetrical arrangement of the two second slots 212 helps suppress the excitation of cross-polarization components, reduces the cross-polarization level, and improves the polarization purity of the dual-band beautified antenna 10, meeting the cross-polarization discrimination requirements of mobile communication systems.

[0056] In some possible embodiments, the first slit 211 can be an annular slit. The annular shape allows the first slit 211 to remain perfectly symmetrical in the circumference, thereby exciting omnidirectional radiation characteristics within a specific radiation plane.

[0057] In other possible embodiments, the first gap 211 may also be other closed ring structures. Exemplarily, the first gap 211 may also be a regular polygonal gap or a rectangular gap. This application does not impose specific limitations in this regard.

[0058] The two second slots 212 can be rectangular slots, and the two second slots 212 extend along the second direction Y. The rectangular slots can form notch cells with well-defined boundaries outside the first slot 211, and their extension dimensions along the second direction Y can determine the frequency position of the high-frequency transmission zero, providing design freedom for the division of the dual frequency bands.

[0059] After the two second gaps 212 are connected to the first gap 211 respectively, impedance mismatch at a specific frequency point can be achieved through the resonance of the second gaps 212 based on the resonant mode excited by the first gap 211. This results in the formation of a transmission zero within the passband formed by the resonance of the first gap 211, thus achieving frequency band separation and ultimately realizing dual-band.

[0060] In some possible implementations, the geometry of the second slit 212 can also be elliptical, trapezoidal, or other shapes, as long as the two second slits 212 are symmetrical about the first center line and about the second center line to achieve the high-frequency notch filtering function. This application does not impose specific limitations on this.

[0061] Reference Figure 2 The dual-band aesthetic antenna 10 also includes a feeding structure 300, which is disposed on the lower surface of the dielectric substrate 100 and is used to input external signals to the metal layer 200 and excite the slot structure 210 to generate resonance.

[0062] The feeding structure 300 may include an outer conductor 310 and an inner conductor 320 arranged coaxially, with the inner conductor 320 disposed inside the outer conductor 310. The outer conductor 310 is grounded to provide a radio frequency reference ground and shield against external interference. The inner conductor 320 is used to transmit the feeding signal, introducing signal energy from the signal source into the dual-band aesthetic antenna 10. The coaxial arrangement of the outer conductor 310 and the inner conductor 320 maintains low transmission loss and good impedance controllability over a wide frequency band, ensuring efficient feeding of dual-band signals.

[0063] The power supply structure 300 also includes a power supply conductor 330, one end of which is connected to the inner conductor 320, and the other end of which penetrates the thickness of the dielectric substrate 100 and is electrically connected to the metal layer 200. The power supply conductor 330 is configured to transmit the power supply signal from the inner conductor 320 to the metal layer 200 to excite the slot structure 210 to resonate.

[0064] It should be noted that, in this embodiment, the first gap 211 divides the metal layer 200 into a first metal portion 200a located inside the first gap 211 and a second metal portion 200b located outside the first gap 211. The feed conductor 330 is electrically connected to the first metal portion 200a, so that energy is concentrated in the region of the first metal portion 200a, and then coupled to the gap structure 210 through the gap to realize the excitation of dual-band resonance.

[0065] In some possible embodiments, the electrical connection between the feed conductor 330 and the first metal portion 200a is located on the first center line of the first metal portion 200a. This helps to excite the resonance of the first slot 211, optimizing the impedance matching performance and radiation pattern symmetry of the antenna.

[0066] Reference Figure 2 To further optimize impedance matching, the feed structure 300 may also include a transition section 340. One end of the transition section 340 is connected to the inner conductor 320, and the other end is connected to the feed conductor 330. The transition section 340 can reduce signal reflection caused by abrupt changes in cross-section between the inner conductor 320 and the feed conductor 330, reduce the standing wave ratio (VSWR) of the feed link, thereby adjusting the impedance matching of the feed structure 300 and improving the energy transmission efficiency and radiation performance within the dual-band.

[0067] Continue to refer to Figure 2 The dual-band aesthetic antenna 10 also includes at least one metal post 400. One end of the metal post 400 penetrates the thickness of the dielectric substrate 100 and is electrically connected to the second metal portion 200b. The other end of the metal post 400 is used for grounding. Exemplarily, the other end of the metal post 400 can be electrically connected to the outer conductor 310 of the feed structure 300. The metal post 400 is used to provide an additional grounding path for the dual-band aesthetic antenna 10. By connecting the second metal portion 200b to the outer conductor 310, the second metal portion 200b obtains a reference ground potential consistent with the feed structure 300, avoiding the floating ground effect. At the same time, it provides a low-impedance return path for the surface current in the high-frequency resonant mode, suppressing signal scattering loss caused by imperfect grounding, thereby optimizing the gain stability in the high-frequency band.

[0068] In addition, the connection method of the metal pillar 400 penetrating the dielectric substrate 100 can also enhance the mechanical strength of the dual-band aesthetic antenna 10 unit, improve the vibration resistance and wind load resistance in outdoor deployment scenarios, and ensure the structural reliability and long-term working stability of the dual-band aesthetic antenna 10 in complex environments.

[0069] The dual-band aesthetic antenna 10 may also include a transparent protective cover (not shown in the figure), which can be disposed above the dielectric substrate 100 and the metal layer 200. The transparent protective cover can be made of a low-loss transparent material. For example, the transparent protective cover can be made of materials such as polytetrafluoroethylene or polycarbonate, which have good transmittance to electromagnetic waves in the operating frequency band and can avoid additional attenuation or reflection interference to the dual-band signal.

[0070] An embedded sealed connection can be used between the protective cover and the dielectric substrate 100 to form a closed protective space, which is used to isolate pollutants such as water vapor, sand, and salt spray in the external environment from directly contacting the metal layer 200 and the slot structure 210, thereby improving the weather resistance and reliability of the dual-band aesthetic antenna 10 under long-term outdoor deployment.

[0071] Furthermore, the transparent protective cover, made of a transparent material, facilitates inspection of the internal condition of the dual-band aesthetic antenna 10 without obstructing or altering its original appearance design. Thus, the transparent protective cover of this application enhances the adaptability of the dual-band aesthetic antenna 10 to complex environments and reduces maintenance frequency and cost, while ensuring that the dual-band radiation performance remains unaffected.

[0072] Figure 3 A schematic diagram of the structure of the dual-band aesthetic antenna provided in this application embodiment, including a conductive coating. (Refer to...) Figure 3 In this embodiment, at least a portion of the metal layer 200 and at least a portion of the upper surface of the dielectric substrate 100 may also be provided with a conductive coating 500. The surface of the conductive coating 500 may be provided with a preset coloring pattern to enhance the visual integration of the dual-band aesthetic antenna 10 with the deployment environment and achieve a decorative effect.

[0073] For example, the conductive coating 500 can adopt a color scheme of red and yellow, and the conductive coating 500 can be used to simulate the shape of a lantern. Specifically, the conductive coating 500 can include a first coating portion 510, a second coating portion 520, a third coating portion 530, and a fourth coating portion 540. The first coating portion 510 is disposed on the upper surface of the first metal portion 200a and the upper surface area of ​​the dielectric substrate 100 exposed by the first gap 211. The shape of the first coating portion 510 matches the annular contour of the first gap 211. The first coating portion 510 can adopt a color scheme of yellow and red spaced along the second direction Y to simulate the annular texture and color hierarchy of the lantern body. The second coating portion 520 is disposed on the upper surface area of ​​the dielectric substrate 100 exposed by the two second gaps 212. The shape of the second coating portion 520 matches the rectangular contour of the second gaps 212 to simulate the vertical texture of the lantern. The second coating portion 520 can be yellow.

[0074] The first coating portion 510 and the second coating portion 520 may have conductive properties to maintain the electrical continuity of the surface of the metal layer 200, avoid interference with the electromagnetic boundary conditions of the gap structure 210 due to the introduction of an insulating medium by the additional decorative layer, thereby ensuring the stability of the dual-band radiation performance.

[0075] In some possible embodiments, the first coating portion 510 and the second coating portion 520 can be detachable conductive patches. For example, the conductive patches can be detachably connected to the surface of the metal layer 200 and the dielectric substrate 100 by magnetic attraction, so that the color scheme or pattern can be changed according to the deployment scenario, thereby improving the adaptability of the dual-band aesthetic antenna 10 in different environments.

[0076] In other possible embodiments, the first coating portion 510 and the second coating portion 520 may also be conductive ink layers directly sprayed or printed onto the surfaces of the metal layer 200 and the dielectric substrate 100. In this way, after the conductive ink layer is cured, it can form a stable electrical contact with the metal layer 200 and the dielectric substrate 100, providing an appearance enhancement function while maintaining the conductive integrity of the surfaces of the metal layer 200 and the dielectric substrate 100, and avoiding the introduction of additional electromagnetic boundary disturbances.

[0077] The third coating portion 530 and the fourth coating portion 540 can be respectively disposed on the upper surface area of ​​the metal layer 200 at the end of the two second gaps 212 opposite to the first gap 211. The third coating portion 530 can be yellow and can be rectangular in shape to simulate the top shape of a lantern. The fourth coating portion 540 can include a plurality of rectangles spaced apart in the second direction Y to simulate the pendant shape at the bottom of the lantern, and the fourth coating portion 540 can be yellow.

[0078] The lengths of the third coating portion 530 and the fourth coating portion 540 along the second direction Y are respectively less than the length of the second coating portion 520 along the second direction Y.

[0079] The third coating portion 530 and the fourth coating portion 540 may be non-conductive to avoid causing additional radiation interference. The third coating portion 530 and the fourth coating portion 540 may be formed by using non-conductive patches or by spraying non-conductive ink, and the embodiments of this application do not impose specific limitations on this.

[0080] The dual-band aesthetic antenna 10 of this application, through the setting of conductive coating 500, can achieve an appearance effect that blends with traditional cultural elements without introducing additional insulating medium. The conductive properties of conductive coating 500 ensure that it does not change the electrical boundary conditions of metal layer 200, and avoids interference with the resonant frequency and impedance matching of slot structure 210. Thus, while meeting the visual integration requirements of landscape-sensitive areas, it can ensure the stability and reliability of dual-band radiation performance.

[0081] Figure 4 The S-parameter curve of the dual-band aesthetic antenna provided in the embodiments of this application is shown. Figure 4 The horizontal axis represents frequency in GHz; the vertical axis represents return loss in dB. (Refer to...) Figure 4 The dual-band aesthetic antenna 10 provided in this application achieves a return loss of less than or equal to -10dB in both the 2.55GHz to 2.79GHz and 3.39GHz to 4.49GHz frequency bands. The relative bandwidth of the first frequency band (2.55GHz to 2.79GHz) is approximately 9%, and the relative bandwidth of the second frequency band (3.39GHz to 4.49GHz) is approximately 28%. Therefore, the dual-band aesthetic antenna 10 provided in this application has good impedance matching characteristics in both the first and second frequency bands, supporting stable operation in both bands. Furthermore, the clear band separation between the first and second frequency bands enables effective dual-band resonance control.

[0082] Figure 5 The radiation pattern of the dual-band beautified antenna provided in this embodiment of the application at the 2.7 GHz frequency point. Figure 6 The radiation pattern of the dual-band aesthetic antenna provided in this application at the 3.9 GHz frequency point. (Refer to...) Figure 5 and Figure 6 In the diagram, the horizontal axis represents angle in degrees, and the vertical axis represents gain in dBi. The circular grid lines represent equal-gain lines, with the outermost circle corresponding to a gain of -30 dBi. Each subsequent circle increases the gain by 5 dB, with the innermost circle corresponding to a gain of 0 dBi. Radial rays represent different azimuth angles, with 0 degrees corresponding to the antenna normal, i.e., the direction of maximum radiation. phi represents the azimuth angle, with phi=0 and phi=90 representing two mutually orthogonal principal plane sectional radiation patterns.

[0083] Reference Figure 5 The dual-band beautification antenna 10 provided in this application has a peak gain of 4.4 dBi at the 2.7 GHz frequency point, and the radiation patterns in both main planes show good directional radiation characteristics, indicating that the dual-band beautification antenna 10 has stable radiation performance and consistent beam pointing in the low frequency band.

[0084] Reference Figure 6 The dual-band beautification antenna 10 provided in this application has a peak gain of 3.3 dBi at the 3.9 GHz frequency point, and the radiation patterns in both main planes show good directional radiation characteristics, indicating that the dual-band beautification antenna 10 also has stable radiation performance and consistent beam pointing in the high frequency band.

[0085] Combination Figure 5 and Figure 6It is known that the dual-band beautification antenna 10 provided in this application has stable radiation performance and consistent beam pointing in both operating frequency bands, which can meet the base station communication requirements for dual-band coordinated coverage.

[0086] It should be noted that the terms "an embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc., mentioned in the specification may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when describing a specific feature, structure, or characteristic in conjunction with embodiments, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0087] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "one" can be understood to convey either singular or plural usage.

[0088] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0089] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dual-band aesthetic antenna, characterized in that, include: A dielectric substrate, wherein a metal layer is disposed on the upper surface of the dielectric substrate; The metal layer is etched to form a slot structure, the slot structure including: a first slot and two second slots, the first slot being a continuously closed annular structure; the first slot divides the metal layer into a first metal portion located inside the first slot and a second metal portion located outside the first slot; The two second gaps are respectively disposed on both sides of the first gap, and both second gaps are located outside the first gap and communicate with the first gap; A power supply structure is disposed on the lower surface of the dielectric substrate, including an outer conductor, an inner conductor, and a power supply conductor; the inner conductor is coaxially disposed inside the outer conductor, and the outer conductor is grounded; one end of the power supply conductor is connected to the inner conductor, and the other end of the power supply conductor passes through the dielectric substrate and is electrically connected to the first metal part; the power supply conductor is configured to transmit the power supply signal from the inner conductor to the first metal part to excite the slot structure to resonate.

2. The dual-band aesthetic antenna according to claim 1, characterized in that, The power supply structure further includes a transition section, one end of which is connected to the inner conductor and the other end of which is connected to the power supply conductor. The transition section is configured to adjust the impedance matching of the power supply structure.

3. The dual-band aesthetic antenna according to claim 1, characterized in that, The first gap has a first center line extending in a first direction, and the first gap has a second center line extending in a second direction; the first center line and the second center line intersect at the geometric center of the first gap; The two second gaps are symmetrical about the first center line and about the second center line; wherein the first direction, the second direction and the thickness direction of the dielectric substrate are perpendicular to each other.

4. The dual-band aesthetic antenna according to claim 3, characterized in that, The two second gaps are rectangular gaps, and the two second gaps extend along the second direction.

5. The dual-band aesthetic antenna according to claim 3, characterized in that, The first gap is an annular gap.

6. The dual-band aesthetic antenna according to claim 3, characterized in that, The electrical connection between the feed conductor and the first metal part is located on the first center line.

7. The dual-band aesthetic antenna according to any one of claims 1-6, characterized in that, Also includes: At least one metal post, one end of which penetrates the dielectric substrate and is electrically connected to the second metal part, and the other end of which is used for grounding.

8. The dual-band aesthetic antenna according to any one of claims 1-6, characterized in that, It also includes a transparent protective cover, which is disposed over the dielectric substrate and the metal layer.

9. The dual-band aesthetic antenna according to any one of claims 1-6, characterized in that, At least a portion of the metal layer and at least a portion of the upper surface of the dielectric substrate are provided with a conductive coating.

10. The dual-band aesthetic antenna according to claim 9, characterized in that, The conductive coating is a detachable conductive patch.

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