CN204361257U - A kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing - Google Patents
A kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing Download PDFInfo
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- CN204361257U CN204361257U CN201420819285.7U CN201420819285U CN204361257U CN 204361257 U CN204361257 U CN 204361257U CN 201420819285 U CN201420819285 U CN 201420819285U CN 204361257 U CN204361257 U CN 204361257U
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- paster
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- medium substrate
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Abstract
It is the three frequency microstrip antenna of ring-type based on defect ground structure housing that the utility model provides a kind of, comprise medium substrate, radiation patch and ground plate, radiation patch and ground plate are arranged symmetrically with along medium substrate center line, ground plate is in medium substrate lower rear, it is characterized in that, described radiation patch comprises the first annulus paster, second annulus paster, circular arc paster, first bar shaped paster, second bar shaped paster, first perpendicular rectangular patch and the second perpendicular rectangular patch, described ground plate is spliced by rectangular slab with the arch sheet of equilateral triangle defect block, described arch sheet upper end is truncated by a horizontal line.The three frequency microstrip antenna quality that this utility model provides is light, volume is little, effectively can reduce return loss, launches higher band bandwidth, has multiband characteristic and stability simultaneously.
Description
Technical field
The utility model belongs to field of antenna, and being specifically related to a kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing.
Background technology
At present at wireless communication technology field, the method realizing multifrequency has two kinds: one utilizes ultra-wideband antenna all frequency ranges all to be covered, but the method is only only applicable to multiple frequency range at a distance of closer situation, has significant limitation; Another kind method allows the antenna in system independently cover these frequency ranges, and the method is more common, but there are a lot of technological difficulties, as the mutual coupling between antenna element and interference problem, and the increasing that takes up room.So we wish to realize double frequency or multifrequency on single antenna, thus avoid the problem of interference mutually between antenna.
Defect grounding structure (Defected Ground Structure, DGS), be one of hot technology of microwave regime newly-developed, it is 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 resonance frequency, harmonic inhabitation, increases the effects such as bandwidth.Defect grounding structure has in microwave circuit and Antenna Design to be applied very widely.
Microstrip antenna has that quality is light, volume is little, be easy to the advantages such as making.But common microstrip antenna stock size is comparatively large, and frequency is single, frequency band is narrower, loss is higher.Microstrip antenna haves much room for improvement in reduction return loss, the increase beamwidth of antenna and reduction size etc. for this reason.
Utility model content
One of the utility model object is that providing a kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing, the three frequency microstrip antenna quality that the utility model provides is light, volume is little, effectively can reduce return loss, launch higher band bandwidth, there is multiband characteristic and stability simultaneously.
The utility model provide a kind of be the three frequency microstrip antenna of ring-type based on defect ground structure housing, comprise medium substrate, radiation patch and ground plate, radiation patch and ground plate are arranged symmetrically with along medium substrate center line, radiation patch is positioned at medium substrate upper surface, ground plate is in medium substrate lower rear, described radiation patch comprises the first annulus paster, second annulus paster, circular arc paster, first bar shaped paster, second bar shaped paster, first perpendicular rectangular patch and the second perpendicular rectangular patch, described ground plate is spliced by rectangular slab with the arch sheet of equilateral triangle defect block, described arch sheet upper end is truncated by a horizontal line,
First annular paster is connected with medium substrate bottom by the second perpendicular rectangular patch, circular arc paster, first bar shaped paster, second bar shaped paster, second annulus paster and the first perpendicular rectangular patch are positioned at inside the first annulus paster, below circular arc paster, two ends are connected with the second bar shaped paster upper end with the first bar shaped paster respectively, the lower end of the first bar shaped paster and the second bar shaped paster is intersected, first bar shaped paster and the second bar shaped paster intersect one end and are connected with the top of the second annulus paster, second annulus paster hypomere is connected with the bottom of the first annulus paster by the first perpendicular rectangular patch.
Further, medium substrate is FR4 epoxy plate, relative dielectric constant ε
rbe 4.4, dielectric loss is 0.02, and characteristic impedance is 50 Ω.
Further, the long L of medium substrate is 38mm, and wide W is 23mm, and thick is 1.6mm.
Further, the inside radius R3 of the first annulus paster is 9.5mm, outer radius R4 is 10.5mm; The inside radius R5 of circular arc paster is 1.6mm, outer radius R6 is 2.1mm, and the center of circle of circular arc paster is 1mm higher than the distance L5 in the first annulus paster center of circle; The inside radius R1 of the second annulus paster is 1.8mm, outer radius R2 is 2.5mm; The long L1 of the first perpendicular rectangular patch is 2.2mm.Wide W1 is 1.4mm; The long Lf of the second perpendicular rectangular patch is 14.1mm, and wide Wf is 2.8mm.
Further, the length of the rectangular slab in ground plate is equal with the wide W length of medium substrate is 23mm, and wide L6 is 6mm; The radius R 7 of the arch sheet in ground plate is 10mm, and the horizontal length of side W2 that arch sheet upper end intercepts is 8.72mm; Equilateral triangle defect block becomes inverted triangle shape, and length of side L8 is 4.25mm, and the distance L7 of the centre-to-centre spacing ground plate bottom of equilateral triangle defect block is 9.1mm, and the distance L9 of the horizontal sides of the horizontal sides distance arch sheet upper end of equilateral triangle defect block is 1.65mm.
The beneficial effects of the utility model are, this three frequency microstrip antenna quality is light, volume is little, effectively can reduce return loss, launch higher band bandwidth, have multiband and stability simultaneously.
Accompanying drawing explanation
Figure 1 shows that the utility model antenna face structural representation.
Figure 2 shows that the utility model antenna structure schematic diagram.
Figure 3 shows that the utility model antenna face parameters schematic diagram.
Figure 4 shows that the utility model antenna back side parameters schematic diagram.
Figure 5 shows that the return loss characteristic curve diagram of the utility model antenna.
Figure 6 shows that the utility model antenna antenna pattern in E plane when 2.45GHz.
Figure 7 shows that the utility model antenna antenna pattern in H plane when 2.45GHz.
Figure 8 shows that the utility model antenna antenna pattern in E plane when 3.5GHz.
Figure 9 shows that the utility model antenna antenna pattern in H plane when 3.5GHz.
Figure 10 shows that the utility model antenna antenna pattern in E plane when 5.5GHz.
Figure 11 shows that the utility model antenna antenna pattern in H plane when 5.5GHz.
Embodiment
Hereafter will describe the utility model in detail in conjunction with specific embodiments.It should be noted that the combination of technical characteristic or the technical characteristic described in following embodiment should not be considered to isolated, they can mutually be combined thus be reached better technique effect.
Figure 1 shows that the utility model antenna face structural representation.
Figure 2 shows that the utility model antenna structure schematic diagram.
As depicted in figs. 1 and 2, a kind of three frequency microstrip antenna based on defect ground structure that the utility model provides, comprise medium substrate 1, radiation patch and ground plate 2, radiation patch and ground plate 2 are arranged symmetrically with along medium substrate center line, radiation patch is positioned at medium substrate 1 upper surface, ground plate 2 is in medium substrate 1 lower rear, described radiation patch comprises the first annulus paster 3, second annulus paster 4, circular arc paster 5, first bar shaped paster 6, second bar shaped paster 7, first perpendicular rectangular patch 8 and the second perpendicular rectangular patch 9, described ground plate 2 is spliced by rectangular slab with the arch sheet of equilateral triangle defect block 10, described arch sheet upper end is truncated by a horizontal line,
First annular paster 3 is connected with medium substrate 1 bottom by the second perpendicular rectangular patch 9, circular arc paster 5, first bar shaped paster 6, second bar shaped paster 7, second annulus paster 4 and the first perpendicular rectangular patch 8 are positioned at inside the first annulus paster 3, circular arc paster 5 is connected with the second bar shaped paster 7 upper end with the first bar shaped paster 6 at two ends below respectively, the lower end of the first bar shaped paster 6 and the second bar shaped paster 7 is intersected, first bar shaped paster 6 and the second bar shaped paster 7 intersect one end and are connected with the top of the second annulus paster 4, second annulus paster 4 lower end is connected with the bottom of the first annulus paster 3 by the first perpendicular rectangular patch 8.
Medium substrate 1 is FR4 epoxy plate, relative dielectric constant ε
r=4.4, dielectric loss is 0.02, and feeding classification is feed microstrip line, and characteristic impedance is 50 Ω.
Defect ground structure can excite and improve resonance frequency, increases impedance bandwidth.Defect ground structure of the present utility model obtains by etching at the correct position of ground plate the defect block 10 be made up of horizontal rectangle and equilateral triangle, and therefore broader bandwidth has appearred three frequency ranges and in antenna altogether, and coupling better.The utility model obtains the antenna covering bluetooth, RFID, WLAN and WiMAX working frequency range when not increasing overall volume.
Application Frequency Simulation Software HFSS carries out simulation calculation and optimal design to different antennae structural parameters, obtains following optimum size and tuning relation, as Fig. 3 and Fig. 4:
Figure 3 shows that the utility model antenna face parameters schematic diagram.
Figure 4 shows that the utility model antenna back side parameters schematic diagram.
The long L of medium substrate is 39mm, and wide W is 21mm, and thick is 1.6mm;
The inside radius R3 of the first annulus paster is 9.5mm, outer radius R4 is 10.5mm; The inside radius R5 of circular arc paster is 1.6mm, outer radius R6 is 2.1mm, and the center of circle of circular arc paster is 1mm higher than the distance L5 in the first annulus paster center of circle; The inside radius R1 of the second annulus paster is 1.8mm, outer radius R2 is 2.5mm; The long L1 of the first perpendicular rectangular patch is 2.2mm.Wide W1 is 1.4mm; The long Lf of the second perpendicular rectangular patch is 14.1mm, and wide Wf is 2.8mm.
The length of the rectangular slab in ground plate 2 is equal with the wide W length of medium substrate is 23mm, and wide L6 is 6mm; The radius R 7 of the arch sheet in ground plate 2 is 10mm, and the horizontal length of side W2 that arch sheet upper end intercepts is 8.72mm; Equilateral triangle defect block becomes inverted triangle shape, and length of side L8 is 4.25mm, and the distance L7 of centre-to-centre spacing ground plate 2 bottom of equilateral triangle is 9.1mm, and the distance L9 of the horizontal sides of the horizontal sides distance arch sheet upper end of equilateral triangle is 1.65mm.
The three frequency microstrip antenna that the utility model provides provides 0.24GHz, 0.99GHz and 0.94GHz tri-impedance bandwidths, working frequency range is respectively 2.31 ~ 2.55GHz, 3.22 ~ 4.21GHZ and 4.99 ~ 5.93GHz, and resonance frequency is respectively 2.44GHz, 3.5GHz and 5.53GHz.Figure 5 shows that the return loss characteristic curve diagram of the utility model antenna, as shown in Figure 5, antenna of the present utility model is respectively-20.4dB in the return loss at resonance point place, and-30.18dB and-34.58dB, demonstrates the matching properties that antenna is good thus.Fig. 6 and Fig. 7 is the antenna pattern of antenna when 2.45GHz respectively in E plane and H plane respectively, Fig. 8 and Fig. 9 is antenna antenna pattern in E plane and H plane when 3.5GHz respectively, Figure 10 and Figure 11 is antenna antenna pattern in E plane and H plane when 5.5GHz respectively.As seen from the figure, the antenna pattern characteristic of the three frequency microstrip antenna that this utility model provides is relatively stable in all working frequency range, has good directivity.In sum, defect ground structure can increase the bandwidth of antenna, makes it have multiband characteristic and good matching properties and stability.
Although given embodiments more of the present utility model, it will be understood by those of skill in the art that when not departing from the utility model spirit herein, can change embodiment herein.Above-described embodiment is exemplary, should using embodiment herein as the restriction of the utility model interest field.
Claims (5)
1. one kind is the three frequency microstrip antenna of ring-type based on defect ground structure housing, comprise medium substrate, radiation patch and ground plate, described radiation patch and described ground plate are arranged symmetrically with along described medium substrate center line, described radiation patch is positioned at described medium substrate upper surface, described ground plate is in described medium substrate lower rear, it is characterized in that, described radiation patch comprises the first annulus paster, second annulus paster, circular arc paster, first bar shaped paster, second bar shaped paster, first perpendicular rectangular patch and the second perpendicular rectangular patch, described ground plate is spliced by rectangular slab with the arch sheet of equilateral triangle defect block, described arch sheet upper end is truncated by a horizontal line,
Described first annulus paster is connected with described medium substrate bottom by the described second perpendicular rectangular patch, described circular arc paster, described first bar shaped paster, described second bar shaped paster, it is inner that described second annulus paster and the described first perpendicular rectangular patch are positioned at described first annulus paster, below described circular arc paster, two ends are connected with described second bar shaped paster upper end with described first bar shaped paster respectively, the lower end of described first bar shaped paster and described second bar shaped paster is intersected, described first bar shaped paster and described second bar shaped paster intersect one end and are connected with the top of described second annulus paster, described second annulus paster hypomere is connected with the bottom of described first annulus paster by the described first perpendicular rectangular patch.
2. a kind of is as claimed in claim 1 the three frequency microstrip antenna of ring-type based on defect ground structure housing, and it is characterized in that, described medium substrate is FR4 epoxy plate, relative dielectric constant ε
rbe 4.4, dielectric loss is 0.02, and characteristic impedance is 50 Ω.
3. a kind of is as claimed in claim 1 the three frequency microstrip antenna of ring-type based on defect ground structure housing, and it is characterized in that, the long L of described medium substrate is 38mm, and wide W is 23mm, and thick is 1.6mm.
4. a kind of is as claimed in claim 1 the three frequency microstrip antenna of ring-type based on defect ground structure housing, and it is characterized in that, the inside radius R3 of described first annulus paster is 9.5mm, outer radius R4 is 10.5mm; The inside radius R5 of described circular arc paster is 1.6mm, outer radius R6 is 2.1mm, and the center of circle of described circular arc paster is 1mm higher than the distance L5 in the described first annulus paster center of circle; The inside radius R1 of described second annulus paster is 1.8mm, outer radius R2 is 2.5mm; The long L1 of the described first perpendicular rectangular patch is 2.2mm, and wide W1 is 1.4mm; The long Lf of the described second perpendicular rectangular patch is 14.1mm, and wide Wf is 2.8mm.
5. a kind of is as claimed in claim 1 the three frequency microstrip antenna of ring-type based on defect ground structure housing, and it is characterized in that, the length of the rectangular slab in described ground plate is equal with the wide W length of described medium substrate is 23mm, and wide L6 is 6mm; The radius R 7 of the arch sheet in described ground plate is 10mm, and the horizontal length of side W2 that described arch sheet upper end intercepts is 8.72mm; Described equilateral triangle defect block becomes inverted triangle shape, length of side L8 is 4.25mm, described in the centre-to-centre spacing of described equilateral triangle defect block, the distance L7 of ground plate bottom is 9.1mm, and the horizontal sides of described equilateral triangle defect block is 1.65mm apart from the distance L9 of described arch sheet upper end horizontal sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819285.7U CN204361257U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819285.7U CN204361257U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361257U true CN204361257U (en) | 2015-05-27 |
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ID=53262705
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420819285.7U Expired - Fee Related CN204361257U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of ring-type based on defect ground structure housing |
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| CN (1) | CN204361257U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623185A (en) * | 2017-09-30 | 2018-01-23 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of rectangular ring five and communication device |
| CN107658550A (en) * | 2017-09-30 | 2018-02-02 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of elliptical annular four and communication device |
| CN108987940A (en) * | 2018-07-13 | 2018-12-11 | 西安电子科技大学 | High-gain high accuracy positioning antenna and its array applied to base station |
| CN105826675B (en) * | 2016-05-26 | 2019-06-18 | 华南理工大学 | A kind of three frequency microstrip antenna |
-
2014
- 2014-12-22 CN CN201420819285.7U patent/CN204361257U/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN107623185A (en) * | 2017-09-30 | 2018-01-23 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of rectangular ring five and communication device |
| CN107658550A (en) * | 2017-09-30 | 2018-02-02 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of elliptical annular four and communication device |
| CN108987940A (en) * | 2018-07-13 | 2018-12-11 | 西安电子科技大学 | High-gain high accuracy positioning antenna and its array applied to base station |
| CN108987940B (en) * | 2018-07-13 | 2020-06-05 | 西安电子科技大学 | High-gain high-precision positioning antenna applied to base station and array thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |