CN211743387U - Half U type ultra wide band patch antenna - Google Patents
Half U type ultra wide band patch antenna Download PDFInfo
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- CN211743387U CN211743387U CN202020265526.3U CN202020265526U CN211743387U CN 211743387 U CN211743387 U CN 211743387U CN 202020265526 U CN202020265526 U CN 202020265526U CN 211743387 U CN211743387 U CN 211743387U
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Abstract
The utility model discloses a semi-U-shaped ultra-wideband patch antenna, which comprises a grounding metal plate, wherein a short circuit sheet is vertically arranged on the grounding metal plate, a top patch is arranged on the short circuit sheet, and the top patch is parallel to the grounding metal plate; the top patch is provided with a first notch, one end of the first notch is communicated with a second notch, the first notch and the second notch are mutually perpendicular to form a semi-U shape, the second notch extends to one side of the top patch to form an opening, and a first right-angle piece extending towards the grounding metal plate is arranged on the edge of the second notch; a second right-angle piece is arranged at the end part of the first right-angle piece, and is parallel to the grounding metal plate; the second right-angle piece is connected with a feed line terminal. The utility model discloses have ultra wide band, radiation direction have the omnidirectionality, the antenna is basically stable in whole bandwidth range radiation direction characteristic, has better gain.
Description
Technical Field
The utility model relates to a patch antenna technical field, concretely relates to half U type ultra wide band patch antenna
Background
Patch antennas are small, lightweight, low profile, and conformal to a carrier (e.g., an aircraft), but are typically 1/2 wavelength antennas in size and have a narrow bandwidth, typically 1% to 3%. In the research of ultra-wideband patch antennas at home and abroad, the size of the ultra-wideband patch antenna is 1/2 of the wavelength corresponding to the lowest frequency. And 1/4, the U-shaped antenna can only reach 30-40% of the wavelength.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough among the prior art, the utility model provides a half U type ultra wide band patch antenna that has super high bandwidth, radiation direction have the omnidirectionality.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
the semi-U-shaped ultra-wideband patch antenna comprises a grounding metal plate, wherein a short circuit sheet is vertically arranged on the grounding metal plate, a top patch is arranged on the short circuit sheet, and the top patch is parallel to the grounding metal plate; a first notch is formed in the top patch, one end of the first notch is communicated with a second notch, the first notch and the second notch are perpendicular to each other, the second notch extends to one side of the top patch to form an opening, and a first right-angle piece extending towards the grounding metal plate is arranged on the edge of the second notch; a second right-angle piece is arranged at the end part of the first right-angle piece, and is parallel to the grounding metal plate; the second right-angle piece is connected with a feed line terminal.
According to the scheme, the top patch forms a half U-shaped slotted design through the first slot and the second slot, the size is reduced by half compared with a U-shaped slot antenna, and two resonant frequencies are kept to form an ultra wide band; a folding patch formed by a first right-angle piece and a second right-angle piece is connected to the inner side of the half U-shaped slot antenna, so that the low-frequency resonance frequency of the antenna is reduced, the bandwidth of the antenna is wider, and the actually measured bandwidth reaches 78.7 percent.
Furthermore, the first right-angle piece is parallel to the short-circuit piece, and the first right-angle piece is perpendicular to the grounding metal plate.
The antenna folding paster part, the short circuit piece, the top paster and the like are right angles, and the antenna is convenient to produce.
Further, the first right-angle piece is connected to the side, close to the extension of the first notch, of the second notch, and the direction of the second right-angle piece extending from the first notch is the same as the direction of the extension of the first notch.
According to the scheme, the folding patch formed by the first right-angle piece and the second right-angle piece is connected to the inner side of the half U-shaped slot antenna, so that the low-frequency resonant frequency of the antenna is reduced, and the bandwidth of the antenna is wider.
Further, the edge of the second right-angle piece is flush with the edge of the upper top patch, and the length x the width of the second right-angle piece is 0.122 lambda0×0.122λ0The height of the second right-angle sheet from the grounding metal plate is 0.142 lambda0，λ0The free space wavelength corresponding to the center frequency.
Further, the distance from the edge of the top patch in the length direction of the first notch is 0.031 lambda0The length x width of the first notch is 0.132 λ0×0.01λ0The length direction of the second notch is 0.092 lambda away from the edge of the top patch0The length x width of the second notch is 0.112 lambda0×0.092λ0，λ0The free space wavelength corresponding to the center frequency.
Further, the height of the shorting plate is 0.041 lambda0Width of 0.153 lambda0The size of the top patch is 0.153 lambda0×0.305λ0，λ0The free space wavelength corresponding to the center frequency.
Further, the connecting point of the feed line end and the second right-angle piece is 0.051 lambda away from the edge of the second right-angle piece0，λ0The free space wavelength corresponding to the center frequency.
The scheme adopts coaxial feed on the folding iron sheet, reduces the input inductance of the coaxial line and further increases the bandwidth.
Further, the medium between the grounding metal plate, the top patch, the first right-angle piece and the second right-angle piece is air or other medium.
The utility model has the advantages that: according to the scheme, the top patch forms a half U-shaped slotted design through the first slot and the second slot, the size is reduced by half compared with a U-shaped slot antenna, and two resonant frequencies are kept to form an ultra wide band; a folding patch formed by a first right-angle piece and a second right-angle piece is connected to the inner side of the half U-shaped slot antenna, so that the low-frequency resonance frequency of the antenna is reduced, the bandwidth of the antenna is wider, and the actually measured bandwidth reaches 78.7 percent. The folded patch part of the antenna, the short-circuit piece, the top patch and the like are right angles, so that the antenna is convenient to produce.
The related physical size of the patch antenna is proportionally increased or reduced, the central frequency is reduced or increased, and the electrical characteristics such as bandwidth, radiation direction and the like are basically kept unchanged; the coaxial feed is adopted on the folding iron sheet, so that the input inductance of the coaxial line is reduced, and the bandwidth is further increased. The utility model discloses have ultra wide band, radiation direction have the omnidirectionality, the antenna is basically stable in whole bandwidth range radiation direction characteristic, has better gain.
Drawings
Fig. 1 is a three-dimensional structure diagram of a half U-shaped ultra-wideband patch antenna.
Fig. 2 is a top view of a half U-shaped ultra-wideband patch antenna.
Figure 3 is a side view of a half U-shaped ultra-wideband patch antenna.
Fig. 4 is a bandwidth diagram of a measured simulation.
FIG. 5 is a plot of a comparison of the XOZ plane radiation directions at 5GHz and 8GHz frequencies.
FIG. 6 is a comparison of the YOZ plane radiation directions at 5GHz and 8GHz frequencies.
Fig. 7 is a frequency gain diagram of a half U-shaped ultra-wideband patch antenna.
Wherein: 1. the feed line comprises a grounding metal plate, 2, a top patch, 3, a first notch, 4, a second notch, 5, a short circuit piece, 6, a first right-angle piece, 7, a second right-angle piece, 8 and a feed line end.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
As shown in fig. 1 to 3, the half U-shaped ultra-wideband patch antenna includes a grounding metal plate 1, a short-circuit plate 5 is vertically disposed on the grounding metal plate 1, a top patch 2 is disposed on the short-circuit plate 5, and the top patch 2 is parallel to the grounding metal plate 1; a first notch 3 is formed in the top patch 2, one end of the first notch 3 is communicated with a second notch 4, the first notch 3 and the second notch 4 are perpendicular to each other to form a semi-U shape, the second notch 4 extends to one side of the top patch 2 to form an opening, and a first right-angle piece 6 extending towards the grounding metal plate 1 is arranged on the edge of the second notch 4; a second right-angle piece 7 is arranged at the end part of the first right-angle piece 6, and the second right-angle piece 7 is parallel to the grounding metal plate 1; the second right-angle piece 7 is connected with a feed line terminal 8 on the grounding metal plate 1.
The first right-angle piece 6 is parallel to the short-circuit piece 5, and the first right-angle piece 6 is vertical to the grounding metal plate 1; the first right-angle piece 6 is connected to the second notch 4 on the side near the extension of the first notch 3, and the second right-angle piece 7 extends in the same direction as the first notch 3.
The edge of the second right-angle piece 7 is flush with the edge of the upper top patch 2, and the length x the width of the second right-angle piece 7 are 0.122 lambda0×0.122λ0The height of the second right-angle piece 7 from the grounding metal plate 1 is 0.142 lambda0，λ0The free space wavelength corresponding to the center frequency.
The distance from the edge of the top patch 2 in the length direction of the first notch 3 is 0.031 lambda0The length × width of the first notch 3 is 0.132 λ0×0.01λ0The length direction of the second notch 4 is 0.092 lambda away from the edge of the top patch 20The length x width of the second slot 4 is 0.112 lambda0×0.092λ0，λ0The free space wavelength corresponding to the center frequency.
The height of the shorting plate 5 is 0.041 lambda0Width of 0.153 lambda0The dimensions of the top patch 2 are: length x width of 0.153 λ0×0.305λ0，λ0The free space wavelength corresponding to the center frequency.
The connection point of the feed end 8 and the second rectangular piece 7 is 0.051 lambda away from the edge of the second rectangular piece 70，λ0The free space wavelength corresponding to the center frequency. The medium among the grounding metal plate 1, the top patch 2, the first right-angle piece 6 and the second right-angle piece 7 is air or otherA medium.
According to the scheme, the top patch 2 forms a half U-shaped slotted design through the first slot 3 and the second slot 4, the size is reduced by half compared with a U-shaped slot antenna, and two resonant frequencies are kept to form an ultra wide band; a folding patch consisting of a first right-angle piece 6 and a second right-angle piece 7 is connected to the inner side of the half U-shaped slot antenna, so that the low-frequency resonant frequency of the antenna is reduced, the bandwidth of the antenna is wider, and the actually measured bandwidth reaches 78.7 percent. The antenna folding patch part, the short circuit sheet 5, the top patch 2 and the like are right angles, so that the antenna is convenient to produce.
The performance of the antenna has corresponding performance under corresponding size, if the size is changed, the performance of the antenna will change, and table 1 below gives an optimized solution for the size of the patch antenna in the present scheme. As the physical size of the antenna increases proportionally, the center frequency of the antenna decreases and its electrical characteristics, such as relative bandwidth, radiation pattern, etc., remain substantially unchanged.
TABLE 1
A simulation model is established according to the dimensions of the table 1, air is used as a medium of the patch antenna, a wide diagram of the patch antenna in the scheme is obtained through simulation analysis of three-dimensional electromagnetic simulation software, as shown in fig. 4, two similar resonant frequencies can be seen to form an ultra wide band, and a simulation result shows that the relative bandwidth is 4.4GHz-8.55GHz and 64.1%. The measured result is 3.7-8.5GHz and 78.7% of relative bandwidth.
As shown in fig. 5 and 6, the XOZ plane and YOZ plane radiation patterns of the half U-shaped patch antenna of the present embodiment are shown at frequencies of 5GHz and 8GHz, and it can be seen that the radiation patterns have omni-directionality and stability although the bandwidth exceeds 60%.
As shown in fig. 7, a simulation gain diagram of the half U-shaped patch antenna according to the present embodiment is given, and it can be seen that the variation is gentle within the working bandwidth range and the working is stable.
The related physical size of the patch antenna is proportionally increased or reduced, the central frequency is reduced or increased, and the electrical characteristics such as bandwidth, radiation direction and the like are basically kept unchanged; the coaxial feed is adopted on the folding iron sheet, so that the input inductance of the coaxial line is reduced, and the bandwidth is further increased. The utility model discloses have ultra wide band, radiation direction have the omnidirectionality, the antenna is basically stable in whole bandwidth range radiation direction characteristic, has better gain.
Claims (8)
1. The semi-U-shaped ultra-wideband patch antenna is characterized by comprising a grounding metal plate (1), wherein a short circuit sheet (5) is vertically arranged on the grounding metal plate (1), a top patch (2) is arranged on the short circuit sheet (5), and the top patch (2) is parallel to the grounding metal plate (1); the top patch (2) is provided with a first notch (3), one end of the first notch (3) is communicated with a second notch (4), the first notch (3) and the second notch (4) are perpendicular to each other to form a semi-U shape, the second notch (4) extends to one side of the top patch (2) to form an opening, and the edge of the second notch (4) is provided with a first right-angle piece (6) extending towards the grounding metal plate (1); a second right-angle piece (7) is arranged at the end part of the first right-angle piece (6), and the second right-angle piece (7) is parallel to the grounding metal plate (1); and a feed line end (8) is connected to the second right-angle piece (7).
2. semi-U shaped ultra wide band patch antenna according to claim 1, characterized in that the first right-angle plate (6) is parallel to the shorting plate (5) and the first right-angle plate (6) is perpendicular to the grounded metal plate (1).
3. A semi-U-shaped ultra-wideband patch antenna according to claim 1, characterized in that the first right-angle plate (6) is connected to the second slot (4) on the side where the first slot (3) extends, and the second right-angle plate (7) extends in the same direction as the first slot (3).
4. A half-U shaped ultra-wideband patch antenna according to claim 3, characterized in that the edge of the second right-angle patch (7) is flush with the edge of the upper top patch (2), and the length x width of the second right-angle patch (7) is 0.122 λ0×0.122λ0Said second right-angle piece(7) The height from the grounding metal plate (1) is 0.142 lambda0，λ0The free space wavelength corresponding to the center frequency.
5. The half-U-shaped ultra-wideband patch antenna according to claim 3, wherein the first slot (3) is spaced from the edge of the top patch (2) by 0.031 λ in the length direction0The length x width of the first notch (3) is 0.132 lambda0×0.01λ0The length direction of the second notch (4) is 0.092 lambda away from the edge of the top patch (2)0The length x width of the second notch (4) is 0.112 lambda0×0.092λ0，λ0The free space wavelength corresponding to the center frequency.
6. semi-U-shaped ultra-wideband patch antenna according to claim 1, characterized in that the height of the shorting-out patch (5) is 0.041 λ0Width of 0.153 lambda0The length x width of the top patch (2) is 0.153 lambda0×0.305λ0，λ0The free space wavelength corresponding to the center frequency.
7. semi-U-shaped ultra-wideband patch antenna according to claim 1, characterized in that the connection point of the feed end (8) and the second right-angle patch (7) is at a distance of 0.051 λ from the edge of the second right-angle patch (7)0，λ0The free space wavelength corresponding to the center frequency.
8. The half-U-shaped ultra-wideband patch antenna according to claim 1, wherein the medium between the grounded metal plate (1), the top patch (2), the first right-angle plate (6) and the second right-angle plate (7) is air or other medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020265526.3U CN211743387U (en) | 2020-03-06 | 2020-03-06 | Half U type ultra wide band patch antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020265526.3U CN211743387U (en) | 2020-03-06 | 2020-03-06 | Half U type ultra wide band patch antenna |
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| CN211743387U true CN211743387U (en) | 2020-10-23 |
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| CN202020265526.3U Active CN211743387U (en) | 2020-03-06 | 2020-03-06 | Half U type ultra wide band patch antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224231A (en) * | 2020-03-06 | 2020-06-02 | 西南交通大学 | Half U type ultra wide band patch antenna |
| CN113809525A (en) * | 2021-09-29 | 2021-12-17 | 维沃移动通信有限公司 | Electronic device |
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2020
- 2020-03-06 CN CN202020265526.3U patent/CN211743387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224231A (en) * | 2020-03-06 | 2020-06-02 | 西南交通大学 | Half U type ultra wide band patch antenna |
| CN113809525A (en) * | 2021-09-29 | 2021-12-17 | 维沃移动通信有限公司 | Electronic device |
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