CN205790360U - A kind of three frequency microstrip antenna - Google Patents
A kind of three frequency microstrip antenna Download PDFInfo
- Publication number
- CN205790360U CN205790360U CN201620501260.1U CN201620501260U CN205790360U CN 205790360 U CN205790360 U CN 205790360U CN 201620501260 U CN201620501260 U CN 201620501260U CN 205790360 U CN205790360 U CN 205790360U
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- rectangular slab
- microstrip antenna
- paster
- medium substrate
- frequency microstrip
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Abstract
The utility model discloses a kind of three frequency microstrip antenna, this utility model belongs to antenna technical field.Described three frequency microstrip antenna includes: medium substrate, radiation patch and earth plate；Medium substrate is arranged between radiation patch and earth plate, and radiation patch and earth plate are arranged on medium substrate, and the lower end of radiation patch is connected with the lower limb of medium substrate；Earth plate includes rectangular slab and arch sheet, and the lower end of rectangular slab is connected with medium substrate lower limb, and rectangular slab upper end is connected with arch sheet, and the arch of arch sheet is outlying from rectangular slab；Rectangular slab is provided with the first defect, and the arch limit of arch sheet is provided with the second defect.This utility model forms defect grounding structure by the first defect and the second defect on earth plate, excites and improve the resonant frequency of this three frequency microstrip antenna, increases impedance bandwidth.
Description
Technical field
This utility model relates to antenna technical field, particularly to a kind of three frequency microstrip antenna.
Background technology
Defect grounding structure (Defected Ground Structure, English abbreviation DGS), is one of the hot technology of microwave regime newly-developed, and it is to be developed by photonic band gap structure.This structure, by etching cycle or aperiodicity figure on the transmission line ground planes such as microstrip line, changes the distribution of earth current, thus changes the frequency characteristic of transmission line, can realize exciting resonant frequency, suppresses harmonic wave, increases the effects such as bandwidth.
At present at wireless communication technology field, microstrip antenna realizes the method for multifrequency two kinds: one is to utilize ultra-wideband antenna all frequency ranges all to be covered, but the method is suitable only for the situation that multiple frequency range is the most closer, has significant limitation；Another kind of method is to allow the antenna in system independently cover these frequency ranges, and the method is relatively common, but there are a lot of technological difficulties, such as the mutual coupling between antenna element and interference problem, and increasings that take up room, therefore it is difficult to make realization.
Utility model content
In order to solve to realize in prior art the problem of microstrip antenna multifrequency, this utility model embodiment provides a kind of three frequency microstrip antenna.
This utility model realizes at least through one of following technical scheme.
A kind of three frequency microstrip antenna, including: medium substrate, radiation patch and earth plate；
Medium substrate is arranged between radiation patch and earth plate, and radiation patch and earth plate are arranged on medium substrate, and the lower end of radiation patch is connected with the lower limb of medium substrate；
Earth plate includes rectangular slab and arch sheet, and the lower end of rectangular slab is connected with medium substrate lower limb, and rectangular slab upper end is connected with arch sheet, and the arch of arch sheet is outlying from rectangular slab；
Rectangular slab is provided with the first defect, and the arch limit of arch sheet is provided with the second defect.
It addition, the three frequency microstrip antenna that this utility model embodiment provides also has following additional technical feature.
Alternatively, described first defect is circular flaw.
Alternatively, circular flaw is positioned in the geometric center of rectangular slab.
Alternatively, the second defect is rectangle defect.
Alternatively, rectangle defect is positioned in the middle part of the arch limit of arch sheet.
Alternatively, the arch limit of arch sheet is circular arc.
Alternatively, medium substrate is rectangle.
Alternatively, radiation patch and earth plate are all arranged symmetrically with along medium substrate centrage.
Alternatively, the length of rectangular slab is identical with the width of medium substrate, and rectangular slab aligns with medium substrate.
Alternatively, radiation patch includes the first rectangular slab paster, the second rectangular slab paster, straight-flanked ring paster, elliptical ring paster and annulus paster；
The lower end of the first rectangular patch is connected with medium substrate lower limb, and its upper end is connected with the lower end of straight-flanked ring paster, and the upper end of straight-flanked ring paster is connected with the second rectangular slab paster；
Elliptical ring paster is positioned at the inside of straight-flanked ring paster, and annulus paster is positioned at the inside of elliptical ring paster, and the lower end of elliptical ring paster is connected with the lower end of straight-flanked ring paster, and the lower end of annulus paster is connected with the lower end of elliptical ring paster.
The technical scheme that this utility model embodiment provides has the benefit that
In this utility model embodiment, this three frequency microstrip antenna is made to have first frequency range by arranging rectangular slab on medium substrate, make this three frequency microstrip antenna have second frequency range further through arranging the first defect on rectangular slab, make this three frequency microstrip antenna have the 3rd frequency range further through arranging the second defect on the arch limit of arch sheet；Meanwhile, this three frequency microstrip antenna forms defect grounding structure by the first defect and the second defect on earth plate, excites and improve the resonant frequency of this three frequency microstrip antenna, increases impedance bandwidth.
Accompanying drawing explanation
Fig. 1 is the structural representation at a kind of three frequency microstrip antenna back side that this utility model embodiment provides；
Fig. 2 is the structural representation in a kind of three frequency microstrip antenna front that this utility model embodiment provides；
Fig. 3 is the return loss characteristic curve diagram of a kind of three frequency microstrip antenna that this utility model embodiment provides；
Fig. 4 be this utility model embodiment provide a kind of three frequency microstrip antenna when 2.45GHz at the antenna pattern of E plane；
Fig. 5 be this utility model embodiment provide a kind of three frequency microstrip antenna when 2.45GHz at the antenna pattern of H plane；
Fig. 6 be this utility model embodiment provide a kind of three frequency microstrip antenna when 3.5GHz at the antenna pattern of E plane；
Fig. 7 be this utility model embodiment provide a kind of three frequency microstrip antenna when 3.5GHz at the antenna pattern of H plane；
Fig. 8 be this utility model embodiment provide a kind of three frequency microstrip antenna when 5.5GHz at the antenna pattern of E plane；
Fig. 9 be this utility model embodiment provide a kind of three frequency microstrip antenna when 5.5GHz at the antenna pattern of H plane.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, this utility model embodiment is described in further detail.
Below in conjunction with detailed description of the invention, being described in detail the three frequency microstrip antenna structure shown in Fig. 1 and Fig. 2, content can be such that
A kind of three frequency microstrip antenna that this utility model embodiment provides, including: medium substrate 1, radiation patch 2 and earth plate 3；
Medium substrate 1 is arranged between radiation patch 2 and earth plate 3, and radiation patch 2 and earth plate 3 are arranged on medium substrate 1, and the lower end of radiation patch 2 is connected with the lower limb of medium substrate 1；
Seeing Fig. 1, earth plate 3 includes that rectangular slab 31 and arch sheet 32, the lower end of rectangular slab 31 are connected with medium substrate 1 lower limb, and rectangular slab 31 upper end is connected with arch sheet 32, and the arch of arch sheet 32 is outlying from rectangular slab 31；
Rectangular slab 31 is provided with the first defect 311, and the arch limit of arch sheet 32 is provided with the second defect 321.
Wherein, the front of three frequency microstrip antenna is medium substrate 1 and arranges the side of radiation patch 2, and the back side is the side that medium substrate 1 arranges earth plate 3.
It addition, the three frequency microstrip antenna that this utility model embodiment provides also has following other technologies feature.
Alternatively, described rectangular slab 31 is integrated structure with described arch sheet 32.
Alternatively, described first defect 311 is circular flaw.
Alternatively, circular flaw is positioned in the geometric center of rectangular slab 31.
In the present embodiment, circular flaw is positioned in the geometric center of rectangular slab 31 so that this three frequency microstrip antenna frequency range transmitting-receiving performance is more preferable.
Alternatively, the second defect 321 is rectangle defect.
Alternatively, rectangle defect is positioned in the middle part of the arch limit of arch sheet 32.
In the present embodiment, rectangle defect is positioned in the middle part of the arch limit of arch sheet 32 so that this three frequency microstrip antenna frequency range transmitting-receiving performance is more preferable.
Alternatively, the arch limit of arch sheet 32 is circular arc.
In the present embodiment, the arch limit of arch sheet 32 is circular arc so that this three frequency microstrip antenna frequency range transmitting-receiving performance is more preferable.
Alternatively, medium substrate 1 is rectangle.
Alternatively, medium substrate 1 is FR-4 epoxy plate, its relative dielectric constant ε r=4.4, and dielectric loss is 0.02, and characteristic impedance is 50 Ω.
Alternatively, the transmitting-receiving performance good for ensureing this three frequency microstrip antenna, radiation patch 2 and earth plate 3 are all arranged symmetrically with along medium substrate 1 centrage.
Alternatively, the length of rectangular slab 31 is identical with the width of medium substrate 1, and rectangular slab 31 aligns with medium substrate 1.
Seeing Fig. 2, alternatively, radiation patch 2 includes first rectangular slab paster the 21, second rectangular slab paster 22, straight-flanked ring paster 23, elliptical ring paster 24 and annulus paster 25；
The lower end of the first rectangular patch 21 is connected with medium substrate 1 lower limb, and its upper end is connected with the lower end of straight-flanked ring paster 23, and the upper end of straight-flanked ring paster 23 is connected with the second rectangular slab paster 22；
Elliptical ring paster 24 is positioned at the inside of straight-flanked ring paster 23, and annulus paster 25 is positioned at the inside of elliptical ring paster 24, and the lower end of elliptical ring paster 24 is connected with the lower end of straight-flanked ring paster 23, and the lower end of annulus paster 25 is connected with the lower end of elliptical ring paster 24.
Alternatively, radiation patch 2 can be integral type structure.
Alternatively, the length of medium substrate 1 can be 35mm, and wide can be 25mm, and thickness can be 0.8mm；The outer shroud length of straight-flanked ring paster 23 can be 18mm, and wide can be 15mm, and internal ring length can be 16mm, and width is 13mm, and internal ring base is 1.5mm away from outer shroud base；The upper end away from the second rectangular slab paster 22, the internal ring upper end of straight-flanked ring paster 23 can be 2mm, and the width of the second rectangular slab paster 22 can be 20mm, and height can be 1.5mm；The outer shroud major semiaxis of elliptical ring paster 24 can be 7mm, and semi-minor axis can be 4.2mm, and internal ring major semiaxis can be 6mm, and semi-minor axis can be 3.6mm, and the outer shroud center of circle of elliptical ring paster 24 can be 0.3mm higher than the internal ring center of circle；The center of circle of the internal ring distance of center circle annulus paster 25 of elliptical ring paster 24 can be 3.2mm, and the internal ring base of the distance of center circle straight-flanked ring paster 23 of annulus paster 25 can be 2.5mm；The outer shroud radius of annulus paster 25 can be 2.8mm, and internal ring radius can be 2mm；The width of the first rectangular slab paster 21 can be 2.4mm, and the first rectangular slab paster 21 length can be 12mm.The length of the rectangular slab 31 in earth plate 3 is equal with the wide length of medium substrate 1 for 25mm, a width of 7mm；When in earth plate 3, the arch limit of arch sheet 32 uses circular arc, its radius can be 20mm, and the center of circle of arch sheet 32 is on medium substrate 1 centrage；The distance of rectangle defect bottom to medium substrate 1 lower end can be 9.5mm, a height of 0.5mm of rectangle defect, and the width of rectangle defect can be 6mm；Circular flaw radius can be 1.5mm, and the distance of distance rectangular slab 31 lower end, lower end of circular flaw can be 4mm；Pass through said structure, and Binding experiment, the three frequency microstrip antenna that the present embodiment provides can provide 0.19GHz, 0.49GHz and 0.88GHz tri-impedance bandwidths, working frequency range is respectively 2.37～2.56GHz, 3.31～3.8GHz and 4.87～5.75GHz, and resonant frequency is respectively 2.47GHz, 3.47GHz and 5.37GHz.As it is shown on figure 3, the return loss that this three frequency microstrip antenna is at resonance point is respectively-22.24dB ,-20.97dB and-22.47dB, thus demonstrate that this three frequency microstrip antenna has good matching properties.Fig. 4 and Fig. 5 is that this three frequency microstrip antenna is 2. respectively
Respectively at E plane and the antenna pattern of H plane during 45GHz, Fig. 6 and Fig. 7 be respectively this three frequency microstrip antenna when 3.5GHz at E plane and the antenna pattern of H plane, Fig. 8 and Fig. 9 be respectively this three frequency microstrip antenna when 5.5GHz at E plane and the antenna pattern of H plane, from Fig. 4 to Fig. 9, the antenna pattern characteristic of this three frequency microstrip antenna is the most stable in all of working frequency range, has good directivity.In sum, this three frequency microstrip antenna has multiband characteristic and good matching properties and stability.Meanwhile, this three frequency microstrip antenna can obtain covering bluetooth, the antenna of RFID, WLAN and WiMAX working frequency range by arranging the first defect 311 and the second defect 321 in the case of not increasing overall volume.
In this utility model embodiment, this three frequency microstrip antenna is made to have first frequency range by arranging rectangular slab 31 on medium substrate 1, make this three frequency microstrip antenna have second frequency range further through arranging circular flaw on rectangular slab 31, make this three frequency microstrip antenna have the 3rd frequency range further through arranging rectangle defect on the arch limit of arch sheet 32；Meanwhile, this three frequency microstrip antenna forms defect grounding structure by circular flaw and rectangle defect on earth plate 3, excites and improve the resonant frequency of this three frequency microstrip antenna, increases impedance bandwidth.
It can further be stated that, term " includes " or its any other variant is intended to comprising of nonexcludability, so that include that the commodity of a series of key element or system not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this commodity or system.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in the commodity including described key element or system.
Described above illustrate and describes some preferred embodiments of the present utility model, but as previously mentioned, it is to be understood that this utility model is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and can be modified by above-mentioned teaching or the technology of association area or knowledge in utility model contemplated scope described herein.And the change that those skilled in the art are carried out and change are without departing from spirit and scope of the present utility model, the most all should be in the protection domain of this utility model claims.
Claims (10)
1. a three frequency microstrip antenna, it is characterised in that include medium substrate, radiation patch and earth plate；
Described medium substrate is arranged between described radiation patch and described earth plate, and described radiation patch and described earth plate are arranged on medium substrate, and the lower end of described radiation patch is connected with the lower limb of described medium substrate；
Described earth plate includes that rectangular slab and arch sheet, the lower end of described rectangular slab are connected with described medium substrate lower limb, and described rectangular slab upper end is connected with described arch sheet, and the arch of described arch sheet is outlying from described rectangular slab；
Described rectangular slab is provided with the first defect, and the arch limit of described arch sheet is provided with the second defect.
A kind of three frequency microstrip antenna the most according to claim 1, it is characterised in that described first defect is circular flaw.
A kind of three frequency microstrip antenna the most according to claim 2, it is characterised in that described circular flaw is positioned in the geometric center of described rectangular slab.
A kind of three frequency microstrip antenna the most according to claim 1, it is characterised in that described second defect is rectangle defect.
A kind of three frequency microstrip antenna the most according to claim 4, it is characterised in that described rectangle defect is positioned in the middle part of the arch limit of described arch sheet.
Three frequency microstrip antenna the most according to claim 1, it is characterised in that the arch limit of described arch sheet is circular arc.
A kind of three frequency microstrip antenna the most according to claim 1, it is characterised in that described medium substrate is rectangle.
A kind of three frequency microstrip antenna the most according to claim 7, it is characterised in that described radiation patch and described earth plate are all arranged symmetrically with along described medium substrate centrage.
A kind of three frequency microstrip antenna the most according to claim 8, it is characterised in that the length of described rectangular slab is identical with the width of described medium substrate, and described rectangular slab aligns with described medium substrate.
A kind of three frequency microstrip antenna the most according to claim 1, it is characterised in that described radiation patch includes the first rectangular slab paster, the second rectangular slab paster, straight-flanked ring paster, elliptical ring paster and annulus paster；The lower end of described first rectangular patch is connected with described medium substrate lower limb, and its upper end is connected with the lower end of described straight-flanked ring paster, and the upper end of described straight-flanked ring paster is connected with described second rectangular slab paster；
Described elliptical ring paster is positioned at the inside of described straight-flanked ring paster, described annulus paster is positioned at the inside of described elliptical ring paster, the lower end of described elliptical ring paster is connected with the lower end of described straight-flanked ring paster, and the lower end of described annulus paster is connected with the lower end of described elliptical ring paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501260.1U CN205790360U (en) | 2016-05-26 | 2016-05-26 | A kind of three frequency microstrip antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501260.1U CN205790360U (en) | 2016-05-26 | 2016-05-26 | A kind of three frequency microstrip antenna |
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| CN205790360U true CN205790360U (en) | 2016-12-07 |
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| CN201620501260.1U Withdrawn - After Issue CN205790360U (en) | 2016-05-26 | 2016-05-26 | A kind of three frequency microstrip antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826675B (en) * | 2016-05-26 | 2019-06-18 | 华南理工大学 | A kind of three frequency microstrip antenna |
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2016
- 2016-05-26 CN CN201620501260.1U patent/CN205790360U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826675B (en) * | 2016-05-26 | 2019-06-18 | 华南理工大学 | A kind of three frequency microstrip antenna |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20190618 |