An ultra-wideband multi-band antenna device

Abstract

This utility model discloses an ultra-wideband multi-band antenna device, including a substrate with a ground layer and a clearance area. An antenna element is disposed in the clearance area. Each antenna element includes a first stub, a second stub, and a rectangular plate connected sequentially. The rectangular plate has opposing first and second sides, as well as opposing third and fourth sides. The first and third sides are adjacent, with the first side close to the first stub. The rectangular plate has a first corner, located near the end of the first stub away from the second stub. The antenna element also includes a first L-shaped stub and a second L-shaped stub. The first L-shaped stub is located outside the first corner and connects to both the first and third sides. The second L-shaped stub is located outside the corner of the first L-shaped stub, and its inner side is connected to the first L-shaped stub. This ultra-wideband multi-band antenna device has a simple and novel structure and can effectively cover the 2-10 GHz frequency band.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to an ultra-wideband multi-band antenna device. Background Technology

[0002] Traditional PCB-based antennas struggle to cover multiple frequency bands simultaneously (such as 5G n77 / n78, 6G transition bands, satellite C-band, weather radar S-band, and multiple generations of WiFi bands). If wide-band coverage (such as 2-10GHz) is required, multiple antennas need to be stacked, which inevitably leads to large antenna devices, high costs, and complex power supply networks, resulting in high losses and unsatisfactory antenna performance. Utility Model Content

[0003] The technical problem solved by this utility model is to provide an ultra-wideband multi-band antenna device with a simple structure that can cover the 2-10GHz frequency band.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an ultra-wideband multi-band antenna device, comprising a substrate, a ground layer and a clearance area on the substrate, an antenna element in the clearance area, and an antenna element comprising a first stub, a second stub, and a rectangular plate connected in sequence. The rectangular plate has opposing first and second sides and opposing third and fourth sides, with the first side adjacent to the third side and the first side close to the first stub. The rectangular plate has a first corner, which is located near the end of the first stub away from the second stub. The antenna element further comprises a first L-shaped stub and a second L-shaped stub. The first L-shaped branch is located outside the first corner. The first L-shaped branch is connected to the first side and the third side respectively. The second L-shaped branch is located outside the corner of the first L-shaped branch. The inner side of the second L-shaped branch is connected to the first L-shaped branch respectively. The first L-shaped branch and the second L-shaped branch form a first stepped structure corresponding to the outer side of the first side. The first L-shaped branch and the second L-shaped branch form a second stepped structure corresponding to the outer side of the third side. A power supply point is provided in the area of ​​the second stepped structure away from the fourth side. The end of the first branch away from the second branch is connected to the grounding layer to form a grounding point.

[0005] In one embodiment, the first branch and the second branch are each elongated.

[0006] In one embodiment, the first branch is perpendicularly connected to the second branch.

[0007] In one embodiment, a long side of the second branch shares a side with the fourth side of the rectangular piece.

[0008] In one embodiment, the number of clearance zones is one.

[0009] In one embodiment, there are multiple clearance zones, and at least two of the clearance zones contain the antenna element.

[0010] In one embodiment, a single clearance area is provided with a plurality of antenna elements.

[0011] In one embodiment, the first L-shaped branch includes a third branch and a fourth branch that are vertically connected, wherein the width of the third branch is the same as or different from the width of the fourth branch, and the length of the third branch is the same as or different from the length of the fourth branch.

[0012] In one embodiment, the second L-shaped branch includes a fifth branch and a sixth branch that are vertically connected, wherein the width of the fifth branch is the same as or different from the width of the sixth branch, and the length of the fifth branch is the same as or different from the length of the sixth branch.

[0013] In one embodiment, the side of the first side of the rectangular piece is the short side of the rectangular piece.

[0014] The beneficial effects of this invention are as follows: This ultra-wideband multi-band antenna device has a simple and novel structure, adopting an on-board PCB antenna structure with a special sawtooth-shaped gradient trace structure integrated on the surface. Combined with optimized clearance area, it can achieve multi-band impedance matching, effectively covering the 2-10GHz frequency band, and supporting application scenarios such as 5G n77 / n78, 6G transition bands, satellite C-band, weather radar S-band, and multiple generations of WiFi bands. Moreover, this ultra-wideband multi-band antenna device is an on-board PCB antenna, which can be directly fed through microstrip lines, simplifying the feeding network, reducing insertion loss, and improving antenna performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a top view of the ultra-wideband multi-band antenna device according to Embodiment 1;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3This is a simulation curve of the S11 parameters of the ultra-wideband multi-band antenna device in Example 1;

[0019] Figure 4 This is a simulation curve of the S22 parameters of the ultra-wideband multi-band antenna device in Example 1;

[0020] Figure 5 This is a radiation efficiency curve of the ultra-wideband multi-band antenna device in Example 1;

[0021] Figure 6 The radiation pattern of the ultra-wideband multi-band antenna device in Example 1 at 5.8 GHz;

[0022] Figure 7 This is an antenna gain curve of the ultra-wideband multi-band antenna device in Example 1;

[0023] Figure 8 This is a top view of the ultra-wideband multi-band antenna device in Embodiment 2.

[0024] Explanation of icon numbers:

[0025] 1. Substrate;

[0026] 2. Grounding layer;

[0027] 3. Clearance zone;

[0028] 4. Antenna element; 41. First stub; 42. Second stub; 43. Rectangular piece; 431. First side; 432. Second side; 433. Third side; 434. Fourth side; 44. First L-shaped stub; 441. Third stub; 442. Fourth stub; 45. Second L-shaped stub; 451. Fifth stub; 452. Sixth stub; 46. First stepped structure; 47. Second stepped structure; 48. Feed point; 49. Grounding point. Detailed Implementation

[0029] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0033] Furthermore, if the meaning of "and / or" appears throughout the text, it refers to three parallel solutions. For example, "and / or" includes solution 1, solution 2, and solution 3, which simultaneously satisfy the above conditions. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Example 1

[0036] Please refer to Figures 1 to 7 Embodiment 1 of this utility model is as follows: Figure 1 and Figure 2As shown, an ultra-wideband multi-band antenna device includes a substrate 1, on which a ground layer 2 and a clearance area 3 are provided. An antenna element 4 is provided in the clearance area 3. The antenna element 4 includes a first branch 41, a second branch 42, and a rectangular plate 43 connected in sequence. The rectangular plate 43 has opposing first sides 431 and 432, and opposing third sides 433 and 434. The first side 431 is adjacent to the third side 433 and is close to the first branch 41. The rectangular plate 43 has a first corner, which is located near the end of the first branch 41 away from the second branch 42. The antenna element 4 also includes a first L-shaped branch 44 and a second L-shaped branch 45. The first L-shaped branch 44... Located on the outer side of the first corner, the first L-shaped branch 44 is connected to the first side 431 and the third side 433 respectively. The second L-shaped branch 45 is located on the outer side of the corner of the first L-shaped branch 44. The inner side of the second L-shaped branch 45 is connected to the first L-shaped branch 44. The first L-shaped branch 44 and the second L-shaped branch 45 form a first stepped structure 46 corresponding to the outer side of the first side 431. The first L-shaped branch 44 and the second L-shaped branch 45 form a second stepped structure 47 corresponding to the outer side of the third side 433. A power supply point 48 is provided in the area of ​​the second stepped structure 47 away from the fourth side 434. The end of the first branch 41 away from the second branch 42 is connected to the grounding layer 2 to form a grounding point 49.

[0037] It should be noted that, Figure 2 The dotted lines are only to help readers distinguish the rectangular piece 43, the first L-shaped branch 44, and the second L-shaped branch 45 more clearly. The dotted lines are simply to help readers understand this technical solution and do not serve any limiting function.

[0038] The side of the first side 431 and the side of the second side 432 of the rectangular piece 43 are the short sides of the rectangular piece 43, and the side of the third side 433 and the side of the fourth side 434 of the rectangular piece 43 are the long sides of the rectangular piece 43.

[0039] In this embodiment, the first branch 41 and the second branch 42 are respectively elongated, the first branch 41 and the second branch 42 are vertically connected, and a long side of the second branch 42 shares a side with the fourth side 434 of the rectangular piece 43.

[0040] Optionally, the number of clearance zones 3 is one, and the clearance zone 3 is provided with a plurality of antenna units 4. In this embodiment, the clearance zone 3 is provided with two antenna units 4.

[0041] The first L-shaped branch 44 includes a third branch 441 and a fourth branch 442 that are vertically connected. The width of the third branch 441 may be the same as or different from the width of the fourth branch 442, and the length of the third branch 441 may be the same as or different from the length of the fourth branch 442. Specifically, the third branch 441 is located outside the first side 431 of the rectangular piece 43, and its inner side is connected to the side of the first side 431 of the rectangular piece 43 to form a single unit. The fourth branch 442 is located outside the third side 433 of the rectangular piece 43, and its inner side is connected to the side of the third side 433 of the rectangular piece 43 to form a single unit.

[0042] The second L-shaped branch 45 includes a fifth branch 451 and a sixth branch 452 that are vertically connected. The width of the fifth branch 451 may be the same as or different from the width of the sixth branch 452, and the length of the fifth branch 451 may be the same as or different from the length of the sixth branch 452. Specifically, the fifth branch 451 is located outside the third branch 441, and its inner side is connected to the outer side of the third branch 441 to form a single unit. The sixth branch 452 is located outside the fourth branch 442, and its inner side is connected to the outer side of the fourth branch 442 to form a single unit.

[0043] Simulation tests were conducted on this ultra-wideband multi-band antenna device:

[0044] Figure 3 This is a simulation curve of the S11 parameters of the ultra-wideband multi-band antenna device in this embodiment; Figure 4 This is a simulation curve of the S22 parameters of the ultra-wideband multi-band antenna device in this embodiment;

[0045] from Figure 3 and Figure 4 As can be seen, this ultra-wideband multi-band antenna device covers the entire 2-10GHz frequency band (including S / C / 5G / 6G / WiFi / UWB bands), breaking through the narrowband limitations of traditional single antennas and supporting multi-system integration. The sawtooth-shaped gradient traces and clearance area design achieve wideband low reflection (S11≤-10dB), with typical values ​​such as S11=-9.77dB at 6.25GHz and S11=-18.3dB at 7.75GHz.

[0046] Figure 5 This is a graph showing the radiation efficiency of the ultra-wideband multi-band antenna device in this embodiment; from Figure 5 It can be seen that the radiation efficiency of this ultra-wideband multi-band antenna device is ≥90% in the 5-8GHz frequency band (e.g., the radiation efficiency reaches -0.06dB at 8GHz), which is better than that of traditional PCB antennas.

[0047] Figure 6 The radiation pattern of the ultra-wideband multi-band antenna device in this embodiment at 5.8 GHz shows omnidirectional radiation. Figure 6 As can be seen, this ultra-wideband multi-band antenna device has a uniform radiation pattern of 360° at 5.8GHz, making it suitable for scenarios requiring coverage without dead zones, such as WiFi and satellite communication, and avoiding the installation angle limitations of directional antennas.

[0048] Figure 7 This is a graph showing the antenna gain of the ultra-wideband multi-band antenna device in this embodiment. Figure 7 It can be seen that the peak gain of this ultra-wideband multi-band antenna device is ≥5dBi (e.g., 4.99dBi at 7GHz), which meets the requirements for long-distance communication.

[0049] This ultra-wideband multi-band antenna device boasts strong multi-scenario compatibility, supporting n77 / n78 base station MIMO and 6G / terahertz collaborative transmission (i.e., 5G / 6G communication), adapting to future communication network upgrades; compatible with C-band uplink and downlink (i.e., satellite communication), suitable for vehicle-mounted and shipborne satellite terminals, achieving stable long-distance connections; integrates WiFi 5 / 6 / 7 and UWB (meeting consumer electronics needs), suitable for smartphones, VR devices, smart homes, etc., reducing multi-antenna stacking; supports 6.25-8.5GHz ultra-wideband (suitable for UWB high-precision positioning), applicable to indoor navigation, keyless entry, and other scenarios; covers the 4-10GHz transition band (i.e., 6G transition technology), providing basic control signaling transmission for 6G terahertz communication. In summary, this ultra-wideband multi-band antenna device can achieve a common aperture for multiple systems including 5G / 6G / satellite / radar / WiFi / UWB, breaking through the limitations of traditional single-function antennas.

[0050] Furthermore, it reserves design margin for frequency bands above 6GHz, is compatible with WiFi 7's 320MHz ultra-wideband and 6G terahertz collaborative requirements, and has strong future scalability;

[0051] It supports the latest protocols such as IEEE 802.11ax / ay (WiFi 6 / 7) and 3GPP Release 15 / 16 (5G) (i.e., it has strong standard compatibility) to avoid the risk of technology becoming obsolete.

[0052] Example 2

[0053] Please refer to Figure 8 The second embodiment of this utility model is a parallel technical solution to the first embodiment. The difference between the two embodiments is that the number of clearance areas 3 is multiple, and at least two of the clearance areas 3 are provided with the antenna unit 4. Each clearance area 3 is provided with one or more of the antenna units 4.

[0054] In this embodiment, there are three clearance zones 3, and each clearance zone 3 is provided with two antenna units 4.

[0055] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An ultra-wideband multi-band antenna device, characterized by: The device includes a substrate with a ground layer and a clearance area. An antenna element is provided in the clearance area. The antenna element includes a first stub, a second stub, and a rectangular plate connected in sequence. The rectangular plate has opposing first and second sides, and opposing third and fourth sides. The first side and the third side are adjacent, and the first side is close to the first stub. The rectangular plate has a first corner, located near the end of the first stub away from the second stub. The antenna element also includes a first L-shaped stub and a second L-shaped stub. The first L-shaped stub is located outside the first corner and is connected to both the first and third sides. The second L-shaped stub is located outside the corner of the first L-shaped stub, and its inner side is connected to the first L-shaped stub. The first and second L-shaped stubs form a first stepped structure corresponding to the outer side of the first side, and a second stepped structure corresponding to the outer side of the third side. A feed point is provided in the area of ​​the second stepped structure away from the fourth side. The end of the first stub away from the second stub is connected to the ground layer to form a ground point.

2. The ultra-wideband multi-band antenna apparatus of Claim 1, further characterized in that: The first and second branches are both elongated.

3. The ultra-wideband multi-band antenna apparatus of claim 2, wherein: The first branch is perpendicularly connected to the second branch.

4. The ultra-wideband multi-band antenna device according to claim 2, characterized in that: The long side of the second branch shares a side with the fourth side of the rectangular piece.

5. The ultra-wideband multi-band antenna apparatus of claim 1, wherein: The number of clearance zones is one.

6. The ultra-wideband multi-band antenna apparatus of claim 1, wherein: There are multiple clearance zones, and at least two of the clearance zones contain the antenna unit.

7. The ultra-wideband multi-band antenna apparatus of claim 1, wherein: Each of the aforementioned clearance zones is provided with a plurality of the aforementioned antenna elements.

8. The ultra-wideband multi-band antenna apparatus of claim 1, wherein: The first L-shaped branch includes a third branch and a fourth branch that are vertically connected. The width of the third branch may be the same as or different from the width of the fourth branch, and the length of the third branch may be the same as or different from the length of the fourth branch.

9. The ultra-wide band multi-band antenna apparatus of claim 1, wherein: The second L-shaped branch includes a fifth branch and a sixth branch that are vertically connected. The width of the fifth branch may be the same as or different from the width of the sixth branch, and the length of the fifth branch may be the same as or different from the length of the sixth branch.

10. The ultra-wideband multi-band antenna apparatus of claim 1, wherein: The first side of the rectangular piece is the short side of the rectangular piece.

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