Indoor distribution ceiling antenna and electronic equipment

Abstract

The invention provides an indoor distribution ceiling antenna and electronic equipment, belongs to the technical field of antennas, and can solve the problems that an existing antenna is high in profile and large in size. The indoor distribution ceiling antenna disclosed by the invention comprises a reflection structure; the first radiation structure and the second radiation structure are arranged on the reflection structure, and the first radiation structure and the second radiation structure are arranged in a crossed mode; wherein the first radiation structure comprises a first dielectric substrate and a first radiation layer arranged on the first dielectric substrate; the second radiation layer comprises a second dielectric substrate and a second radiation layer arranged on the second dielectric substrate; the first radiation layer comprises a first conical part, and the second radiation layer comprises a second conical part; the conical tip of the first conical part and the conical tip of the second conical part point to the reflection structure. According to the antenna, a traditional three-dimensional inverted cone is planarized, the profile is reduced, the antenna is made to be transparent, and beautification of indoor installation of the antenna is achieved.

Description

Technical Field

[0001] This disclosure belongs to the field of antenna technology, specifically relating to an indoor distributed ceiling antenna and electronic equipment. Background Technology

[0002] With the advent of 4G mobile communication technology, mobile communication networks are carrying an increasing number of services, leading to an explosive growth in mobile communication users. Furthermore, the emergence of new industries such as live streaming, connected vehicles, and the Internet of Things (IoT) is placing increasingly higher demands on the communication quality and channel capacity of mobile communication networks. According to relevant research, over 70% of mobile services currently occur in indoor environments such as office buildings, shopping malls, conference centers, and stadiums. In these scenarios, the density of mobile users is increasing, and the channel capacity provided by outdoor macro base stations is gradually becoming insufficient to meet user needs. Moreover, increasingly dense, taller, and more complex urban buildings severely interfere with the signal quality of outdoor macro base stations. To address this issue, a relatively mature solution is to build indoor distributed communication systems.

[0003] Traditional indoor distributed communication systems primarily use wired connections to split signals from a source through radio frequency devices such as couplers and combiners, and then transmit the signals via indoor antennas to achieve indoor mobile signal coverage. The antenna is a key component in this system. However, antenna installation requires significant indoor space. Therefore, there are usually requirements regarding the antenna's appearance within the indoor space, generally requiring that its installation not disrupt the interior design. This necessitates designing an antenna that ensures performance while preserving the interior aesthetics; transparent indoor distributed antennas offer one solution to this problem.

[0004] However, traditional indoor ceiling-mounted antennas generally have a profile height greater than 50mm, and since indoor antennas are actually installed on the ceiling, users prefer flat structures. Low-profile transparent antennas installed on the ceiling are more concealed. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art, and to provide an indoor distributed ceiling antenna and electronic device.

[0006] Firstly, the technical solution adopted to solve the technical problem of this invention is an indoor ceiling-mounted antenna, comprising:

[0007] Reflective structure;

[0008] A first radiating structure and a second radiating structure are disposed on the reflecting structure, and the first radiating structure and the second radiating structure are arranged intersectingly; wherein,

[0009] The first radiating structure includes a first dielectric substrate and a first radiating layer disposed on the first dielectric substrate; the second radiating layer includes a second dielectric substrate and a second radiating layer disposed on the second dielectric substrate.

[0010] The first radiating layer includes a first cone, and the second radiating layer includes a second cone; the tips of the first and second cones point towards the reflective structure.

[0011] The first cone includes a first side and a second side, and the second cone includes a third side and a fourth side; the extension lines of the first side and the second side intersect, and the intersection point is a first vertex; the extension lines of the third side and the fourth side intersect, and the intersection point is a second vertex; the first vertex and the second vertex are located on the edge formed by the intersection of the first radial structure and the second radial structure.

[0012] In some embodiments, the first radiating structure includes a first slit opening, and the second radiating structure includes a second slit opening; the first slit opening and the second slit opening intersect, such that the first radiating structure and the second radiating structure are arranged intersectingly.

[0013] In some embodiments, a first through hole is provided on both sides of the first slit opening, and a second through hole is provided on both sides of the second slit opening; the first through hole penetrates the first radiating structure, and the second through hole penetrates the second radiating structure.

[0014] In some embodiments, the first radiating layer includes a third slit opening, and the second radiating layer includes a fourth slit opening;

[0015] The third slit opening on the first radiating layer defines an alternately arranged first electrode and a second electrode; the fourth slit opening on the second radiating layer defines an alternately arranged third electrode and a fourth electrode.

[0016] In some embodiments, with the ridge formed by the intersection of the first radiating structure and the second radiating structure as the axis of symmetry, both the third slit opening and the fourth slit opening are axially symmetric figures.

[0017] In some embodiments, the antenna further includes a covering layer disposed on the side of the layer containing the first radiating structure and the second radiating structure away from the reflective structure.

[0018] In some embodiments, the first radiating structure further includes a first connecting portion and a second connecting portion disposed on the first dielectric substrate, the two ends of the first connecting portion and the second connecting portion being respectively connected to the cover layer and the reflective structure, and the orthographic projections of the first connecting portion and the second connecting portion on the first dielectric substrate are respectively located on both sides of the orthographic projection of the first radiating layer on the first dielectric substrate.

[0019] The second radiating structure further includes a third connecting portion and a fourth connecting portion disposed on the second dielectric substrate. The two ends of the third connecting portion and the fourth connecting portion are respectively connected to the cover layer and the reflective structure, and the orthographic projections of the third connecting portion and the fourth connecting portion on the second dielectric substrate are respectively located on both sides of the orthographic projection of the second radiating layer on the second dielectric substrate.

[0020] In some embodiments, the cover layer includes at least one fifth slit opening disposed around the center of the cover layer.

[0021] In some embodiments, the shape of the fifth slit opening in the orthographic projection of the reflective structure is one of a circular ring, a serrated ring, or a rectangular ring.

[0022] In some embodiments, the reflective structure has a first groove disposed around the center of the reflective structure, wherein...

[0023] The orthographic projection of the first groove on the horizontal plane does not coincide with the orthographic projections of the first and second radiating structures on the horizontal plane.

[0024] In some embodiments, the reflective structure includes a third dielectric substrate and a reflective plate disposed on the third dielectric substrate, wherein,

[0025] The reflector includes a main body and at least one branch, and the first radiating structure and the second radiating structure are located on the main body of the reflector in the orthographic projection of the reflector.

[0026] In some embodiments, the reflector further includes a sixth slit opening, the sixth slit opening comprising a first slit portion and a second slit portion extending in different directions, wherein...

[0027] The first slit is located between the branch and the main body; the second slit is located in the main body, and the first slit and the second slit are connected to each other.

[0028] In some embodiments, the orthographic projection of the main body portion onto the third dielectric substrate is circular, and the orthographic projection of the branch portion onto the third dielectric substrate is rectangular or fan-shaped.

[0029] In some embodiments, the main body and the branch portion are integrally formed.

[0030] In some embodiments, the antenna further includes a feeding structure connected to the tip of the first cone and / or the second cone.

[0031] Secondly, embodiments of this disclosure also provide an electronic device that includes any of the antennas described in the first aspect above. Attached Figure Description

[0032] Figure 1 A schematic diagram of an antenna provided according to an embodiment of this disclosure;

[0033] Figure 2 A front view of an antenna provided according to an embodiment of this disclosure;

[0034] Figure 3 A top view of an antenna provided for an embodiment of this disclosure;

[0035] Figure 4 An unfolded view of a radial structure provided in an embodiment of this disclosure;

[0036] Figures 5a-5c These are top views of a cover layer provided in an embodiment of this disclosure;

[0037] Figure 6 A schematic diagram of yet another antenna provided in an embodiment of this disclosure;

[0038] Figures 7a-7c These are schematic diagrams of a reflective structure provided in an embodiment of this disclosure;

[0039] Figure 8 A standing wave ratio (SWR) curve of an antenna as a function of frequency is provided in an embodiment of this disclosure;

[0040] Figure 9 A graph showing the peak gain of an antenna as a function of frequency, provided for an embodiment of this disclosure;

[0041] Figure 10 A standing wave ratio curve as a function of frequency for another antenna provided in this embodiment of the present disclosure;

[0042] Figure 11 A graph showing the peak gain of another antenna provided in this disclosure as a function of frequency;

[0043] Figure 12 for Figure 6 A schematic diagram showing the non-circularity results of the antenna shown.

[0044] Figures 13a-13b They are respectively Figure 6 The S11 curve and standing wave curve of the antenna shown are shown.

[0045] Figure 14 for Figure 6 The curve showing the peak gain of the antenna as a function of frequency is shown. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0048] First, the frequency bands involved in this disclosure are explained as follows: 900 band (880-960MHz), 1800 band (1710-1850MHz), F band (1885-1915MHz), A band (2010-2025MHz), E band (2300-2400MHz), WLAN band (2400-2483.5MHz), and D band (2515-2675MHz).

[0049] Figure 1 This is a schematic diagram of an antenna provided in an embodiment of this disclosure. Figure 2 This is a front view of an antenna provided in an embodiment of this disclosure. Figure 3 This is a top view of an antenna provided in an embodiment of this disclosure. Figure 4 This is a development diagram of a radial structure provided in an embodiment of this disclosure. Figures 5a-5c These are top views of a cover layer provided in an embodiment of this disclosure. Figure 6 This is a schematic diagram of yet another antenna provided in an embodiment of the present disclosure. Figures 7a-7c These are schematic diagrams of a reflective structure provided in an embodiment of this disclosure.

[0050] like Figures 1-4 As shown, this embodiment of the present disclosure provides an indoor ceiling-mounted antenna, including a reflective structure 10; a first radiating structure 1 and a second radiating structure 2, disposed on the reflective structure 10, and the first radiating structure 1 and the second radiating structure 2 are intersected. The first radiating structure 1 includes a first dielectric substrate 11 and a first radiating layer 12 disposed on the first dielectric substrate 11; the second radiating structure 2 includes a second dielectric substrate 21 and a second radiating layer 22 disposed on the second dielectric substrate 21; the first radiating layer 11 includes a first cone portion, and the second radiating layer 21 includes a second cone portion; the tips of the first and second cone portions point towards the reflective structure 10. The first cone portion includes a first side 1a and a second side 2a, and the second cone portion includes a third side 1b and a fourth side 2b; the extension lines of the first side 1a and the second side 2a intersect at a first vertex A; the extension lines of the third side 1b and the fourth side 2b intersect at a second vertex B; the first vertex A and the second vertex B are located on the edge formed by the intersection of the first radiating structure 1 and the second radiating structure 2.

[0051] This embodiment of the invention, by intersecting the first radiating structure 1 and the second radiating structure 2, allows the intersecting first radiating structure 1 and the second radiating structure 2 to radiate electromagnetic waves in all directions. Therefore, this embodiment can use a bonding process to bond the first radiating layer 12 and the second radiating layer 22 to the first dielectric substrate 11 and the second dielectric substrate 21 to obtain the first radiating structure 1 and the second radiating structure 2, thus planarizing the traditional three-dimensional inverted cone shape and achieving a planar antenna design. This reduces the size and profile of the antenna. Furthermore, compared to the traditional three-dimensional inverted cone antenna, the planar design makes it easier to achieve antenna transparency, improving the concealment of indoor distributed antennas and thus enhancing the aesthetics of indoor antenna installation. It should be noted that the intersecting arrangement of the first radiating structure 1 and the second radiating structure 2 can be orthogonal (i.e., perpendicularly intersecting) or non-orthogonal. In this embodiment, a perpendicularly intersecting arrangement of the first radiating structure 1 and the second radiating structure 2 is used as an example for explanation.

[0052] Specifically, the reflective structure 10 can be a metal mesh reflective panel or a plate-like structure; this disclosure does not impose any limitations on this. It should be noted that when the reflective structure 10 is a metal mesh reflective panel, the line width and spacing of the metal mesh need to be controlled to meet the reflective function. Optionally, the outline of the reflective structure 10 can be circular, with a diameter generally less than 200 mm. Of course, the outline of the reflective structure 10 can also be other shapes; this disclosure does not impose any limitations on this.

[0053] The first dielectric substrate 11 and the second dielectric substrate 21 can be ABS (Acrylonitrile Butadiene Styrene, thermoplastic polymer material) boards, with a width w generally of 100mm to 150mm and a height h generally less than 100mm. Preferably, the height h is generally 30mm to 50mm.

[0054] The first radiating layer 12 and the second radiating layer 22 can be obtained by fabricating radiating patches on a PET (polyethylene terephthalate, thermoplastic polyester) film using a metal mesh process. Thus, the metal mesh film of the first radiating layer 12 and the second radiating layer 22 has a planar pattern. In this embodiment, the tips of the first and second cones are actually virtual cones, with the apex of the first cone corresponding to a first vertex A and the apex of the second cone corresponding to a second vertex B.

[0055] Furthermore, since the first radiating structure 1 and the second radiating structure 2 are arranged in an interleaved manner, a bonding process can be used to bond the PET film layer (first radiating layer 12 and second radiating layer 22) covered with the metal mesh antenna onto the ABS substrate (first dielectric substrate 11 and second dielectric substrate 21) to obtain the first radiating structure 1 and the second radiating structure 2, thereby achieving planarization of the antenna. This reduces the size and profile of the antenna, while also enabling the antenna to radiate in all directions. The radiating patches of the first radiating layer 12 and the second radiating layer 22 are both microstrip radiating patches.

[0056] Optionally, the metal mesh film of the first radiating layer 12 and the second radiating layer 22 can be a planar inverted cone pattern. The indoor ceiling-mounted antenna provided in this disclosure can planarize the traditional three-dimensional inverted cone shape. The radiating patch can be made into a transparent film (first radiating layer 12 and second radiating layer 22) using metalmesh technology and then attached to a transparent ABS board (first dielectric substrate 11 and second dielectric substrate 21), thereby realizing the transparency of the antenna, improving the concealment of the indoor antenna, and thus achieving the aesthetics of the antenna installed indoors, solving the problem of the difficulty in making the traditional three-dimensional inverted cone antenna transparent.

[0057] In some embodiments, the first radiating structure 1 includes a first slit opening 121, and the second radiating structure 2 includes a second slit opening 221; the first slit opening 121 and the second slit opening 221 intersect, so that the first radiating structure 1 and the second radiating structure 2 are arranged intersectingly. That is, since the first radiating structure 1 and the second radiating structure 2 need to be intersecting and interlocked, complementary gaps also need to be opened in the middle of the first radiating structure 1 and the second radiating structure 2 to facilitate antenna installation. For example, Figure 4As shown, the first slit opening 121 and the second slit opening 221 can be rectangular openings or openings of other shapes. In some embodiments, the first slit opening 121 penetrates the tip of the cone of the first radiating layer 12, and the second slit opening 221 does not intersect with the tip of the cone of the second radiating layer 22; or, the first slit opening 121 does not intersect with the tip of the cone of the first radiating layer 12, and the second slit opening 221 penetrates the tip of the cone of the second radiating layer 22. This configuration makes the first radiating structure 1 and the second radiating structure 2 more stable and facilitates manufacturing.

[0058] In some embodiments, a first through hole 120 is provided on both sides of the first slit opening 121, and a second through hole 220 is provided on both sides of the second slit opening 221; the first through hole 120 penetrates the first radiating structure 1, and the second through hole 220 penetrates the second radiating structure 2.

[0059] Specifically, such as Figure 4 As shown, the presence of a first slit opening 121 on the first radiating structure 1 and a second slit opening 221 on the second radiating structure 2 leads to a discontinuity in the lateral currents on the first radiating layer 12 and the second radiating layer 22. This discontinuity may excite high-frequency resonance, affecting the antenna's radiation mode. This embodiment addresses this issue by providing first through-holes 120 on both sides of the first slit opening 121 and second through-holes 220 on both sides of the second slit opening 221. This strengthens the coupling between the edges of the first slit opening 121 and the first through-hole 120, as well as the coupling between the edges of the second slit opening 221 and the second through-hole 220, thereby reducing this effect. Optionally, the diameters of the first through-hole 120 and the second through-hole 220 are 0.5 mm to 1.5 mm, which further reduces the impact of the first slit opening 121 and the second slit opening 221.

[0060] In some embodiments, the first radiating layer 12 includes a third slit opening 122, and the second radiating layer 22 includes a fourth slit opening 222; the third slit opening 122 on the first radiating layer 12 defines an alternately arranged first electrode 1221 and a second electrode 1222; the fourth slit opening 222 on the second radiating layer 22 defines an alternately arranged third electrode 2221 and a fourth electrode 2222.

[0061] Specifically, such as Figure 4As shown, the third slit opening 122 and the fourth slit opening 222 can be serpentine slits, respectively located on the side of the first radiating layer 12 and the second radiating layer 22 near their conical portions. The first electrode 1221 and the second electrode 1222 form an interdigital capacitor, and the third electrode 2221 and the fourth electrode 2222 also form an interdigital capacitor. Their main function is to adjust the standing wave ratio of the antenna and increase its bandwidth. Optionally, the slit width of the third slit opening 122 and the fourth slit opening 222 is 0.1mm to 0.5mm, which allows for better adjustment of the antenna standing wave ratio.

[0062] In some embodiments, with the ridge formed by the intersection of the first radiating structure 1 and the second radiating structure 2 as the axis of symmetry, both the third slit opening 122 and the fourth slit opening 222 are axially symmetric figures. Optionally, the ratio of the width w of the third slit opening 122 to the width w of the first dielectric substrate 11 is approximately 1 / 2, and the ratio of the width w of the fourth slit opening 222 to the width w of the second dielectric substrate 21 is approximately 1 / 2.

[0063] In some embodiments, the antenna includes not only a reflective structure 10, a first radiating structure 1, and a second radiating structure 2, but also a cover layer 30 disposed on the side of the layer containing the first radiating structure 1 and the second radiating structure 2 away from the reflective structure 10. In this embodiment, the cover layer 300 can increase the antenna bandwidth and improve its performance.

[0064] In some embodiments, the material of the cladding layer 30 in this disclosure can be FR4, which has a dielectric constant of 4.4 and a loss tangent of 0.02. By selecting a suitable material, the antenna profile can be further reduced. It should be noted that the area of ​​the cladding layer 30 needs to be large enough to cover the outer sides of the first radiating structure 1 and the second radiating structure 2.

[0065] In some embodiments, the first radiating structure 1 includes not only the first dielectric substrate 11 and the first radiating layer 12, but also a first connecting portion 131 and a second connecting portion 132 disposed on the first dielectric substrate 11. The two ends of the first connecting portion 131 and the second connecting portion 132 are respectively connected to the cover layer 30 and the reflective structure 10, and the orthographic projections of the first connecting portion 131 and the second connecting portion 132 on the first dielectric substrate 11 are respectively located on both sides of the orthographic projection of the first radiating layer 12 on the first dielectric substrate 11.

[0066] In some embodiments, the second radiating structure 2 includes not only the second dielectric substrate 21 and the second radiating layer 22, but also a third connecting portion 231 and a fourth connecting portion 232 disposed on the second dielectric substrate 21. The two ends of the third connecting portion 231 and the fourth connecting portion 232 are respectively connected to the cover layer 30 and the reflective structure 10, and the orthographic projections of the third connecting portion 231 and the fourth connecting portion 232 on the second dielectric substrate 21 are respectively located on both sides of the orthographic projection of the second radiating layer 22 on the second dielectric substrate 21.

[0067] Specifically, the materials of the first connecting portion 131, the second connecting portion 132, the third connecting portion 231, and the fourth connecting portion 232 are the same as those of the first radiating layer 12 and the second radiating layer 22, all being metal mesh films. Their function is to connect the cover layer 30 and the reflective structure 10, forming a short-circuit structure, and can be considered as an inductive load. Combined with the cover layer 30, this allows the antenna's operating frequency to shift to lower frequencies, enabling good radiation even at low frequencies of 690MHz to 960MHz. The first connecting portion 131 and the second connecting portion 132 can be located on the same side of the first dielectric substrate 11 as the first radiating layer 12, or on a different side of the first dielectric substrate 11. Furthermore, the first connecting portion 131 and the second connecting portion 132 do not overlap with the first radiating layer 12 to prevent the current in the first connecting portion 131 and the second connecting portion 132 from affecting the current in the first radiating layer 12. Similarly, the third connection portion 231 and the fourth connection portion 232 can be located on the same side of the second dielectric substrate 21 as the second radiating layer 22, or they can be located on different sides of the second dielectric substrate 21. Furthermore, the third connection portion 231 and the fourth connection portion 232 do not overlap with the second radiating layer 22 to prevent the current in the third connection portion 231 and the fourth connection portion 232 from affecting the current in the second radiating layer 22.

[0068] In some embodiments, the first connecting portion 131 and the second connecting portion 132 are symmetrically arranged with the ridge formed by the intersection of the first radiating structure 1 and the second radiating structure 2 as the axis of symmetry, and the third connecting portion 231 and the fourth connecting portion 232 are symmetrically arranged to ensure that the radiation pattern is not distorted and to enable the antenna to achieve better performance.

[0069] In some embodiments, the cover layer 30 includes at least one fifth slit opening 31 disposed around the center of the cover layer 30. The fifth slit opening 31 in the cover layer 30 is provided to provide capacitive loading to the antenna, and its main function is to reduce the antenna profile.

[0070] In some embodiments, the shape of the fifth slit opening 31 in the orthographic projection of the reflective structure 10 can be any one of an annular shape, a serrated annular shape, or a rectangular annular shape.

[0071] Figure 8 This is a graph showing the standing wave ratio (SWR) of an antenna as a function of frequency, provided in an embodiment of this disclosure. The antenna is... Figure 4 When the corresponding antenna, and the cladding layer 30 includes a circular fifth slit opening 31. For example... Figure 8 As shown in the figure, the results show that the antenna provided in this embodiment has a standing wave ratio of less than 1.88 in the 0.69GHz to 2.69GHz frequency band, and its antenna bandwidth reaches 118%, fully covering the 2G / 3G / 4G mobile communication frequency bands.

[0072] Figure 9 This is a graph showing the peak gain of an antenna as a function of frequency, provided in an embodiment of this disclosure. The antenna is... Figure 4 When the corresponding antenna, and the cladding layer 30 includes a circular fifth slit opening 31. For example... Figure 9 As shown, the antenna provided in this embodiment has a gain of 3.2 dBi to 5 dBi in the 1800 / F / A / E / WLAN / D frequency band and a gain of 0.1 dBi to 0.5 dBi in the 900 frequency band.

[0073] In some embodiments, the cover layer 30 may include only one fifth slit opening 31, or it may have multiple fifth slit openings 31.

[0074] Specifically, such as Figure 5a As shown, the cladding layer 30 includes two circular fifth slit openings 31. Optionally, the diameter of the circular fifth slit opening 31 near the center of the cladding layer 30 can be 90mm to 100mm, and the slit width of the fifth slit opening 31 can be 0.1mm to 0.5mm. This configuration allows for better adjustment of the capacitively loaded capacitance, thereby adjusting the impedance matching of the antenna.

[0075] Figure 10 This is a graph showing the standing wave ratio (SWR) versus frequency for another antenna provided in an embodiment of this disclosure. The antenna is as follows: Figure 4 The corresponding antenna, and the load is as follows Figure 5a The cover layer 30 shown (i.e., the cover layer 30 includes two circular fifth slit openings 31). For example... Figure 10 As shown, the antenna standing wave ratio is less than 1.75 in the 0.69GHz–2.69GHz frequency band, compared to Figure 8 In the corresponding embodiment, the antenna standing wave ratio was increased by 0.13, indicating that loading two circular fifth slot openings 31 has a good effect on improving the impedance matching of the antenna.

[0076] Figure 11 A graph showing the peak gain of another antenna provided in this disclosure as a function of frequency.

[0077] Among them, the antenna is as follows Figure 4The corresponding antenna, and the load is as follows Figure 5a The cover layer 30 shown (i.e., the cover layer 30 includes two circular fifth slit openings 31). For example... Figure 11 As shown, the antenna gain is 3dBi to 5dBi in the 1800 / F / A / E / WLAN / D bands and 0.1dBi to 0.5dBi in the 900 band.

[0078] like Figures 5a-5c As shown, when the cover layer 30 includes multiple fifth slit openings 31, the shapes of the multiple fifth slit openings 31 can be the same or different, and can be selected according to the actual application scenario.

[0079] In some embodiments, the reflective structure 10 has a first groove 101, which is disposed around the center of the reflective structure 10. The orthographic projection of the first groove 101 on the horizontal plane does not coincide with the orthographic projection of the first radiating structure 1 and the second radiating structure 2 on the horizontal plane.

[0080] Specifically, such as Figure 6 As shown, a first annular groove 101 is etched on the reflective structure 10, and simultaneously, with Figure 4 Compared to the corresponding antenna, increasing the diameter of the reflective structure 10 further improves the antenna's standing wave ratio and enhances its gain in the low-frequency band. Optionally, the diameter of the reflective structure 10 can be 300mm to 400mm; increasing the diameter of the reflective structure 10 is mainly to improve the low-frequency gain. Optionally, the first groove 101 can be annular, with an inner ring diameter of 100mm to 140mm and a width of 1mm to 3mm. In addition to increasing the diameter of the reflective structure 10, an annular groove is also etched, primarily to maintain good non-circularity of the transparent antenna. The first groove 101 can also be other shapes, such as a serrated ring, a rectangle, or other shapes.

[0081] Figure 12 for Figure 6 The diagram shows the non-circularity result of the antenna. Figure 12 As shown, the simulation results of non-circularity in the 900 / 1800 / F / A / E / WLAN / D frequency bands are presented. The results show that the antenna non-circularity is less than 1.65 in the above frequency bands, and less than 1 in the 900 / 1800 / F / A / E / WLAN frequency bands, demonstrating good non-circularity performance.

[0082] Figures 13a-13b They are respectively Figure 6 The diagram shows the S11 curve and standing wave ratio (SWR) of the antenna shown. Figures 13a-13bAs shown in the figure, the results show that the antenna's S11 is less than -10dB across the entire frequency band from 0.69GHz to 2.69GHz, exhibiting ultra-wideband characteristics. Furthermore, the standing wave ratio (SWR) is less than 1.76 in the 0.69GHz to 2.69GHz band, and less than 1.5 in the 0.91GHz to 2.58GHz band.

[0083] Figure 14 for Figure 6 The curve showing the peak gain of the antenna as a function of frequency is shown. Figure 14 As shown in the results, Figure 6 The antenna shown exhibits a significant gain improvement in the low-frequency band, with a gain range of 1.5–2.6 dBi in the 900 GHz band and 3.2–5.5 dBi in the 1800 / F / A / E / WLAN / D bands. The overall peak gain of the antenna has been improved.

[0084] In some embodiments, the reflective structure 10 includes a third dielectric substrate 102 and a reflective plate 103 disposed on the third dielectric substrate 102. For example... Figures 7a-7c As shown, the third dielectric substrate 102 can also be an ABS board, and the shape of the third dielectric substrate 102 can be circular, square, or other shapes. The reflector 103 is a reflector with a metal mesh attached. That is, the reflective structure 10 can also be composed of an ABS board with a metal mesh attached (generally with a diameter of less than 200mm), thus ensuring that the entire antenna is transparent, improving the concealment of the indoor distributed antenna, and thereby achieving aesthetic enhancement of the antenna installation indoors.

[0085] In some embodiments, the reflector 103 includes a main body 1031 and at least one branch 1032, and the first radiating structure 1 and the second radiating structure 2 are projected onto the main body 1031 of the reflector 103.

[0086] Specifically, such as Figures 7a-7c As shown, by setting the reflector 103 in the form of a main body 1031 plus a branch 1032, the size of the reflector 103 can be reduced, thereby reducing the size of the entire antenna. Similarly, the antenna patterns (including the patterns of the reflective structure 10, the first radiating structure 1, the second radiating structure 2, and the cover layer 30) provided in the embodiments of this disclosure are all fabricated on an ABS substrate using a metal mesh process, making the entire substrate with the reflector completely transparent. Figures 7a-7c The diagram illustrates three forms of the reflective structure 10. It is understood that the reflective structure 10 provided in this disclosure is not limited to these three patterns.

[0087] In some embodiments, when the reflector 103 includes a plurality of branch portions 1032, the plurality of branch portions 1032 can be symmetrically arranged along the ridge formed by the intersection of the first radiating structure 1 and the second radiating structure 2 as the axis of symmetry. This arrangement ensures that the reflection of electromagnetic waves by the reflector 10 is more uniform. Of course, when the reflector 103 includes a plurality of branch portions 1032, the positions of the plurality of branch portions 1032 can also be flexibly arranged as needed, and this disclosure does not impose any limitations on this.

[0088] In some embodiments, the orthographic projection of the main body 1031 onto the third dielectric substrate 102 can be circular, and the orthographic projection of the branch portion 1032 onto the third dielectric substrate 102 can be rectangular or fan-shaped. When the reflector 103 includes a plurality of branch portions 1032, the orthographic projections of the plurality of branch portions 1032 onto the third dielectric substrate 102 can be the same or different, depending on the actual application.

[0089] In some embodiments, the main body 1031 and the branch portion 1032 are integrally formed. This saves on processes and facilitates manufacturing.

[0090] In some embodiments, the reflector 103 includes not only a main body 1031 and a branch portion 1032, but also a sixth slit opening 1033. The sixth slit opening 1033 includes a first slit portion 105 and a second slit portion 104 extending in different directions. The first slit portion 105 is located between the branch portion 1032 and the main body 1031; the second slit portion 104 is located on the main body 1031, and the first slit portion 105 and the second slit portion 104 are interconnected. Figure 7c As shown, this configuration increases the current path on the reflector 103, thereby improving the antenna's performance.

[0091] In some embodiments, the antenna includes not only a reflective structure 10, a first radiating structure 1, a second radiating structure 2, and a covering layer, but also a feeding structure 40 connected to the tip of the first cone and / or the second cone.

[0092] The antennas provided in this disclosure are all microstrip patches. By using an inverted conical first radiating layer 12 and a second radiating layer 22, the traditional indoor distributed antenna is replaced with a three-dimensional conical antenna. The antenna is fabricated on a PET film using a metal mesh process, and then the film layer covered with the metal mesh antenna is bonded to an ABS substrate using a bonding process. The entire radiating part of the antenna is transparent, which improves the concealment of the indoor distributed antenna, thereby achieving aesthetic enhancement of the antenna installation indoors, and the cross-section is smaller.

[0093] Furthermore, this disclosure improves the impedance matching of the antenna by loading a third slit opening 122 and a fourth slit opening 222 onto the inverted conical metal mesh film, and forming interdigitated capacitors on the first radiating structure 1 and the second radiating structure 2, thereby increasing the bandwidth of the antenna. The antenna provided by the embodiments of this disclosure enables a single patch antenna to cover the 0.69GHz to 2.69GHz frequency band.

[0094] Furthermore, this disclosure achieves a single-polarization transparent antenna with a cross-section of less than 50mm by loading a circular cover layer 30 on top and using a metal mesh first connection portion 131, second connection portion 132, third connection portion 231 and fourth connection portion 232 to maintain the overall transparency of the antenna while reducing the antenna's cross-section.

[0095] Finally, this embodiment of the disclosure further reduces the size of the antenna by dividing the reflector 103 of the irregularly shaped antenna into a main body 1031 and at least one branch 1032 disposed on the edge of the main body 1031.

[0096] The antenna provided in this disclosure solves the problems of traditional indoor distributed antennas, such as large size, high profile, insufficient bandwidth, unsightly appearance, and impact on the interior design style of buildings, while providing comparable performance to traditional indoor distributed antennas, and has a relatively low cost.

[0097] Based on the same invention, this disclosure also provides an electronic device including any of the antennas described above.

[0098] In some examples, the electronic device provided in this disclosure further includes a transceiver unit, a radio frequency transceiver, a signal amplifier, a power amplifier, and a filtering unit. The antenna in the electronic device can function as either a transmitting antenna or a receiving antenna. The transceiver unit may include a baseband and a receiving end. The baseband provides signals in at least one frequency band, such as 2G, 3G, 4G, and 5G signals, and transmits these signals to the radio frequency transceiver. After receiving the signal, the antenna in the electronic device can process it through the filtering unit, power amplifier, signal amplifier, and radio frequency transceiver before transmitting it to the receiving end in the transceiver unit. The receiving end may be, for example, a smart gateway.

[0099] Furthermore, the RF transceiver is connected to the transceiver unit and is used to modulate the signals transmitted by the transceiver unit, or to demodulate the signals received by the antenna before transmitting them to the transceiver unit. Specifically, the RF transceiver may include a transmitting circuit, a receiving circuit, a modulation circuit, and a demodulation circuit. After the transmitting circuit receives various types of signals provided by the baseband, the modulation circuit can modulate these signals before sending them to the antenna. The antenna receives the signals and transmits them to the receiving circuit of the RF transceiver. The receiving circuit then transmits the signals to the demodulation circuit, which demodulates the signals before transmitting them to the receiving end.

[0100] Furthermore, the RF transceiver is connected to a signal amplifier and a power amplifier, which are then connected to a filtering unit. The filtering unit is connected to at least one antenna. During signal transmission by the electronic device, the signal amplifier improves the signal-to-noise ratio (SNR) of the RF transceiver's output signal before transmitting it to the filtering unit; the power amplifier amplifies the power of the RF transceiver's output signal before transmitting it to the filtering unit. The filtering unit may specifically include a duplexer and a filtering circuit. It combines the signals output from the signal amplifier and power amplifier, filters out noise, and transmits the signals to the antenna, which then radiates the signal. During signal reception by the electronic device, the antenna receives the signal and transmits it to the filtering unit. The filtering unit filters out noise from the received signal before transmitting it to the signal amplifier and power amplifier. The signal amplifier increases the gain of the received signal, improving the SNR; the power amplifier amplifies the power of the received signal. The signal received by the antenna is processed by the power amplifier and signal amplifier before being transmitted to the RF transceiver, which then transmits it to the transceiver unit.

[0101] In some examples, the signal amplifier may include various types of signal amplifiers, such as low-noise amplifiers, without limitation.

[0102] In some examples, the electronic device provided in this disclosure also includes a power management unit connected to a power amplifier and providing the power amplifier with a voltage for amplifying signals.

[0103] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A ceiling-mounted antenna for indoor distribution, characterized in that, include: Reflective structure; A first radiating structure and a second radiating structure are disposed on the reflecting structure, and the first radiating structure and the second radiating structure are arranged intersectingly; wherein, The first radiating structure includes a first dielectric substrate and a first radiating layer disposed on the first dielectric substrate; the second radiating layer includes a second dielectric substrate and a second radiating layer disposed on the second dielectric substrate. The first radiating layer includes a first cone, and the second radiating layer includes a second cone; the tips of the first and second cones point towards the reflective structure. The first cone includes a first side and a second side, and the second cone includes a third side and a fourth side; the extension lines of the first side and the second side intersect, and the intersection point is a first vertex; the extension lines of the third side and the fourth side intersect, and the intersection point is a second vertex; the first vertex and the second vertex are located on the edge formed by the intersection of the first radial structure and the second radial structure.

2. The antenna according to claim 1, characterized in that, The first radiating structure includes a first slit opening, and the second radiating structure includes a second slit opening; the first slit opening and the second slit opening intersect, so that the first radiating structure and the second radiating structure are arranged intersectingly.

3. The antenna according to claim 2, characterized in that, A first through hole is provided on both sides of the first slit opening, and a second through hole is provided on both sides of the second slit opening; the first through hole penetrates the first radiating structure, and the second through hole penetrates the second radiating structure.

4. The antenna according to claim 1, characterized in that, The first radiating layer includes a third slit opening, and the second radiating layer includes a fourth slit opening; The third slit opening on the first radiating layer defines an alternately arranged first electrode and second electrode; The fourth slit opening on the second radiating layer defines an alternately arranged third and fourth electrode.

5. The antenna according to claim 4, characterized in that, With the ridge formed by the intersection of the first and second radiating structures as the axis of symmetry, both the third and fourth slit openings are axially symmetric figures.

6. The antenna according to claim 1, characterized in that, The antenna also includes a covering layer disposed on the side of the layer containing the first radiating structure and the second radiating structure that is away from the reflective structure.

7. The antenna according to claim 6, characterized in that, The first radiating structure further includes a first connecting portion and a second connecting portion disposed on the first dielectric substrate. The two ends of the first connecting portion and the second connecting portion are respectively connected to the cover layer and the reflective structure, and the orthographic projections of the first connecting portion and the second connecting portion on the first dielectric substrate are respectively located on both sides of the orthographic projection of the first radiating layer on the first dielectric substrate. The second radiating structure further includes a third connecting portion and a fourth connecting portion disposed on the second dielectric substrate. The two ends of the third connecting portion and the fourth connecting portion are respectively connected to the cover layer and the reflective structure, and the orthographic projections of the third connecting portion and the fourth connecting portion on the second dielectric substrate are respectively located on both sides of the orthographic projection of the second radiating layer on the second dielectric substrate.

8. The antenna according to claim 6, characterized in that, The cover layer includes at least one fifth slit opening, which is disposed around the center of the cover layer.

9. The antenna according to claim 8, characterized in that, The shape of the fifth slit opening in the orthographic projection of the reflective structure is one of the following: circular, serrated, or rectangular.

10. The antenna according to claim 1, characterized in that, The reflective structure has a first groove, which is disposed around the center of the reflective structure. The orthographic projection of the first groove on the horizontal plane does not coincide with the orthographic projections of the first and second radiating structures on the horizontal plane.

11. The antenna according to claim 1, characterized in that, The reflective structure includes a third dielectric substrate and a reflective plate disposed on the third dielectric substrate, wherein... The reflector includes a main body and at least one branch, and the first radiating structure and the second radiating structure are located on the main body of the reflector in the orthographic projection of the reflector.

12. The antenna according to claim 11, characterized in that, The reflector also includes a sixth slit opening, which comprises a first slit portion and a second slit portion extending in different directions, wherein... The first slit is located between the branch and the main body; the second slit is located in the main body, and the first slit and the second slit are connected to each other.

13. The antenna according to claim 11, characterized in that, The main body portion is circular in orthographic projection onto the third dielectric substrate, and the branch portion is rectangular or fan-shaped in orthographic projection onto the third dielectric substrate.

14. The antenna according to claim 11, characterized in that, The main body and the branch sections are integrally formed.

15. The antenna according to claim 1, characterized in that, The antenna also includes a feeding structure connected to the tip of the first cone and / or the second cone.

16. An electronic device, characterized in that, Including the antenna as described in any one of claims 1-15.

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