CN212571341U - Broadband slotted patch antenna - Google Patents
Broadband slotted patch antenna Download PDFInfo
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- CN212571341U CN212571341U CN202021449620.0U CN202021449620U CN212571341U CN 212571341 U CN212571341 U CN 212571341U CN 202021449620 U CN202021449620 U CN 202021449620U CN 212571341 U CN212571341 U CN 212571341U
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- patch antenna
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- slotted
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Abstract
The utility model discloses a broadband fluting patch antenna, relate to microwave technical field, this broadband fluting patch antenna includes dielectric substrate and the rectangle radiation paster and the metal ground plate of surface from top to bottom, set up two relative and symmetric distribution's of opening U type grooves on the rectangle radiation paster, coaxial feed electricity detection carries out the feed to the rectangle radiation paster, thereby the relative mode that sets up of opening in two U type grooves makes the resonance that two U type grooves produced near each other along the electric current syntropy in two grooves, realize comparatively ideal gain, realize good broadband antenna characteristic, this broadband fluting patch antenna working frequency bandwidth is wide, and is small in size, moreover, the steam generator is simple in structure, and is easy to integrate, can satisfy antenna phased array requirement well.
Description
Technical Field
The utility model belongs to the technical field of the microwave technique and specifically relates to a broadband fluting patch antenna.
Background
The demand of broadband antennas for high frequency and high speed data communication is increasing day by day, and patch antennas are widely used in communication systems due to their characteristics of small size, low processing cost, and the like. The traditional patch antenna is narrow in bandwidth which is about 2-3%, and the application of the traditional patch antenna in a communication system is greatly limited. The conventional methods for expanding the bandwidth of an antenna mainly include increasing the height of the antenna, reducing the dielectric constant of a substrate, introducing a parasitic resonator into the antenna by using a multilayer board, and the like, and although these methods can increase the bandwidth of the antenna to a certain extent, the following problems exist: the method for increasing the height of the antenna (such as increasing the thickness of a substrate or laminating patches) can greatly increase the height of the antenna section, the adoption of the low-dielectric-constant substrate (such as an air substrate) can make the antenna structure unstable, increase the processing and installation difficulty, and the introduction of the parasitic patches on the antenna plane can also greatly increase the plane size of the antenna, and the antenna structure is complex, so that the existing method is difficult to meet the array requirements of the antenna phased array.
SUMMERY OF THE UTILITY MODEL
The inventor provides a broadband fluting patch antenna to above-mentioned problem and technical demand, the technical scheme of the utility model as follows:
a broadband slotted patch antenna comprises a dielectric substrate, a rectangular radiation patch, a metal ground plate and a coaxial feed probe, wherein the rectangular radiation patch and the metal ground plate are respectively covered on the upper surface and the lower surface of the dielectric substrate;
a first U-shaped groove and a second U-shaped groove are etched on the rectangular radiation patch, the opening directions of the two U-shaped grooves are opposite, and the two U-shaped grooves are symmetrical relative to the center line of the rectangular radiation patch along the long side of the U-shaped groove; the coaxial feed probe penetrates through the medium substrate through a circular hole formed in the metal grounding plate to feed the rectangular radiation patch, and the two U-shaped grooves respectively generate one resonance and are coupled to generate a new resonance, so that the rectangular radiation patch generates three resonances at different frequency points.
The further technical scheme is that the size of the first U-shaped groove is larger than that of the second U-shaped groove, and the second U-shaped groove is nested in the first U-shaped groove.
The further technical scheme is that the coaxial feed probe is positioned at the right middle position of the rectangular radiation patch.
The further technical scheme is that the bandwidth of the broadband slotted patch antenna is related to the resonant frequency of the two U-shaped grooves and the distance between the two U-shaped grooves, and the resonant frequency of each U-shaped groove is related to the size of the U-shaped groove.
The further technical scheme is that the resonant frequency of each U-shaped groove is related to the length of each side of the U-shaped groove and the width of the groove on each side, and the U-shaped grooves are uniform or non-uniform in size.
The further technical scheme is that the dielectric substrate is an RT5880 double-sided copper-clad plate with the dielectric constant of 2.2 and the loss tangent angle of 0.0009.
The further technical scheme is that the working bandwidth of the broadband slotted patch antenna reaches 41% when the standing-wave ratio is less than 2, the gain fluctuation in the working frequency band is 1.9dB, the size of the broadband slotted patch antenna is 0.34 lambada g multiplied by 0.07 lambada g, and the lambada g represents the guided wave wavelength.
The utility model has the beneficial technical effects that:
the application discloses broadband fluting patch antenna, this broadband fluting patch antenna are equipped with two U type grooves that the opening is relative and symmetric distribution on the rectangle radiation patch, thereby the relative mode of setting up in two U type grooves makes along the electric current syntropy in two grooves the resonance that makes two U type grooves produce be close to each other, realizes good broadband antenna characteristic, realizes comparatively ideal gain.
In addition, the two U-shaped grooves can further adopt a mutually nested structure, so that the size of the antenna is greatly reduced while the broadband characteristic is realized, and the integral volume of the antenna is reduced.
The feed position can be further arranged in the center of the antenna, so that the two U-shaped grooves can effectively radiate to reduce the in-band gain fluctuation of the antenna.
The broadband slotted patch antenna has the advantages of wide working frequency band, small size, low in-band gain fluctuation, simple and stable structure and easiness in integration, and can well meet the array requirements of the antenna phased array.
Drawings
Fig. 1 is a schematic diagram of a stacked structure of a wideband slotted patch antenna disclosed in the present application.
Fig. 2 is a top view from the rectangular radiating patch side of the wideband slotted patch antenna disclosed herein.
Fig. 3 is an antenna standing wave ratio simulation curve of the wideband slotted patch antenna of the present application.
Fig. 4 is a gain simulation curve of the wideband slotted patch antenna of the present application.
Fig. 5 is an E-plane radiation pattern of the wideband slotted patch antenna of the present application.
Fig. 6 is an H-plane radiation pattern of the wideband slotted patch antenna of the present application.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
The application discloses a broadband slotted patch antenna, please refer to the structure shown in fig. 1, which includes a dielectric substrate 1, a rectangular radiation patch 2, a metal ground plate 3 and a coaxial feed probe 4. The rectangular radiation patch 2 and the metal grounding plate 3 are respectively covered on the upper surface and the lower surface of the dielectric substrate 1. The dielectric substrate 1 in the application is an RT5880 double-sided copper-clad plate with the dielectric constant of 2.2 and the loss tangent angle of 0.0009.
Referring to fig. 2, a first U-shaped groove 21 and a second U-shaped groove 22 are etched on the rectangular radiation patch 2, the two U-shaped grooves have opposite opening directions, and the two U-shaped grooves are symmetrical with respect to a center line of the rectangular radiation patch 2 along a long side of the U-shaped groove.
The coaxial feed probe 4 penetrates through the dielectric substrate 1 through a circular hole formed in the metal grounding plate 3 to feed the rectangular radiation patch 2, so that the rectangular radiation patch 2 with double U-shaped grooves generates three resonances at different frequency points to expand the bandwidth of the antenna, wherein the first U-shaped groove 21 and the second U-shaped groove 22 respectively generate one resonance, and the two U-shaped grooves are coupled to generate a third resonance. The structure that this application two relative symmetries of U type groove opening were placed can make thereby the resonance that two U type grooves produced of the electric current syntropy in two U type grooves be close to each other, realizes good broadband antenna characteristic, realizes comparatively ideal gain, easily antenna phased array subassembly.
Further, the two U-shaped grooves can be set in a nested structure, so that the size of the first U-shaped groove 21 is larger than that of the second U-shaped groove 22, and the second U-shaped groove 22 is nested inside the first U-shaped groove 21, and the nested structure can greatly reduce the size of the antenna while realizing broadband.
On the other hand, the coaxial feeding probe 4 may be disposed at the middle position of the rectangular radiation patch, and the coaxial feeding probe 4 is located inside the second U-shaped groove 22, such as the circular area inside the second U-shaped groove 22 shown in fig. 2, and the coaxial feeding probe 4 feeds the two U-shaped grooves, so that the two U-shaped grooves simultaneously generate effective radiation to reduce the in-band gain fluctuation of the antenna.
The bandwidth of the broadband slotted patch antenna is related to the resonant frequency of the two U-shaped grooves and the distance between the two U-shaped grooves, the resonant frequency of each U-shaped groove is related to the size of the U-shaped groove, and the resonant frequency of each U-shaped groove is related to the length of each side of the U-shaped groove and the slotting width of each side. The size of U type groove can be adjusted and control the resonant frequency of U type groove and the good broadband characteristic of antenna in order to guarantee in a flexible way the matching in antenna operating frequency band, and the size of U type groove in this application is even or inhomogeneous, also means that the fluting width on each side of U type groove equals or is unequal.
The resonant frequencies of the two U-shaped grooves influence the bandwidth, so that the bandwidth of the broadband slotted patch antenna can be regulated and controlled through the size and the distance between the two U-shaped grooves.
Compared with a single U-shaped groove structure (standing wave ratio VSWR <2), the working bandwidth of the broadband slotted patch antenna is extended by 41%, the gain of the antenna at a central frequency point is 7.1dBi, the gain fluctuation in a working frequency band is smaller by 1.9dB, the size of the broadband slotted patch antenna is 0.34 lambda g multiplied by 0.07 lambda g, and the lambda g represents the wave guide wavelength, so that the requirement of an antenna phased array group can be well met. The antenna simulation curve of the broadband slotted patch antenna is shown in fig. 3 and 4, the antenna directional diagram is shown in fig. 5 and 6, fig. 3 is an antenna standing wave ratio curve, fig. 4 is a gain curve, fig. 5 is an E-plane radiation directional diagram, and fig. 6 is an H-plane radiation directional diagram.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.
Claims (7)
1. A broadband slotted patch antenna is characterized by comprising a dielectric substrate, a rectangular radiation patch, a metal ground plate and a coaxial feed probe, wherein the rectangular radiation patch and the metal ground plate are respectively covered on the upper surface and the lower surface of the dielectric substrate;
a first U-shaped groove and a second U-shaped groove are etched on the rectangular radiation patch, the opening directions of the two U-shaped grooves are opposite, and the two U-shaped grooves are symmetrical relative to the center line of the rectangular radiation patch along the long side of the U-shaped groove; the coaxial feed probe penetrates through the medium substrate through a circular hole formed in the metal grounding plate to feed the rectangular radiation patch, and the two U-shaped grooves respectively generate one resonance and are coupled to generate a new resonance, so that the rectangular radiation patch generates three resonances at different frequency points.
2. The wideband slotted patch antenna of claim 1, wherein the first U-shaped slot is larger in size than the second U-shaped slot, the second U-shaped slot being nested within the first U-shaped slot.
3. The wideband slotted patch antenna according to claim 1, wherein the coaxial feed probe is located at a midpoint of the rectangular radiating patch.
4. A wideband slotted patch antenna according to any of claims 1 to 3, wherein the bandwidth of the wideband slotted patch antenna is related to the resonant frequency of the two U-slots and the spacing between the two U-slots, the resonant frequency of each U-slot being related to the size of the U-slot.
5. A wideband slotted patch antenna according to claim 4, wherein the resonant frequency of each U-shaped slot is related to the length of each side of the U-shaped slot and the width of the slot on each side, and the U-shaped slot is uniform or non-uniform in size.
6. The wideband slotted patch antenna according to claim 1, wherein the dielectric substrate is an RT5880 double-sided copper-clad plate with a dielectric constant of 2.2 and a loss tangent angle of 0.0009.
7. The wideband slotted patch antenna according to any of claims 1-3, wherein the operating bandwidth of the wideband slotted patch antenna is 41% at a standing wave ratio of less than 2, the gain fluctuation within the operating band is 1.9dB, and the dimensions of the wideband slotted patch antenna are 0.34 λ g x 0.07 λ g, λ g representing the guided wave wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021449620.0U CN212571341U (en) | 2020-07-21 | 2020-07-21 | Broadband slotted patch antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021449620.0U CN212571341U (en) | 2020-07-21 | 2020-07-21 | Broadband slotted patch antenna |
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| CN212571341U true CN212571341U (en) | 2021-02-19 |
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| CN202021449620.0U Active CN212571341U (en) | 2020-07-21 | 2020-07-21 | Broadband slotted patch antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381164A (en) * | 2021-04-08 | 2021-09-10 | 上海磐启微电子有限公司 | Back-feed coupling WIFI antenna |
| CN113395797A (en) * | 2021-08-17 | 2021-09-14 | 四川大学 | Microwave radiation unit, reconfigurable blanket type microwave planar heater and heating method thereof |
| CN113964507A (en) * | 2021-09-28 | 2022-01-21 | 东北电力大学 | Electromagnetic metamaterial patch antenna for collecting radio frequency energy |
| CN114284701A (en) * | 2021-12-21 | 2022-04-05 | 无锡国芯微电子系统有限公司 | Millimeter wave fluting patch antenna |
| CN116581536A (en) * | 2023-07-12 | 2023-08-11 | 南京隼眼电子科技有限公司 | Antenna and electronic equipment |
| CN116581536B (en) * | 2023-07-12 | 2024-04-26 | 南京隼眼电子科技有限公司 | Antenna and electronic equipment |
-
2020
- 2020-07-21 CN CN202021449620.0U patent/CN212571341U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381164A (en) * | 2021-04-08 | 2021-09-10 | 上海磐启微电子有限公司 | Back-feed coupling WIFI antenna |
| CN113395797A (en) * | 2021-08-17 | 2021-09-14 | 四川大学 | Microwave radiation unit, reconfigurable blanket type microwave planar heater and heating method thereof |
| CN113395797B (en) * | 2021-08-17 | 2021-11-12 | 四川大学 | Microwave radiation unit, reconfigurable blanket type microwave planar heater and heating method thereof |
| CN113964507A (en) * | 2021-09-28 | 2022-01-21 | 东北电力大学 | Electromagnetic metamaterial patch antenna for collecting radio frequency energy |
| CN113964507B (en) * | 2021-09-28 | 2023-10-27 | 东北电力大学 | Electromagnetic metamaterial patch antenna for collecting radio frequency energy |
| CN114284701A (en) * | 2021-12-21 | 2022-04-05 | 无锡国芯微电子系统有限公司 | Millimeter wave fluting patch antenna |
| CN116581536A (en) * | 2023-07-12 | 2023-08-11 | 南京隼眼电子科技有限公司 | Antenna and electronic equipment |
| CN116581536B (en) * | 2023-07-12 | 2024-04-26 | 南京隼眼电子科技有限公司 | Antenna and electronic equipment |
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