CN204361258U - A kind of is rectangular-shaped three frequency microstrip antenna based on defect ground structure housing - Google Patents
A kind of is rectangular-shaped three frequency microstrip antenna based on defect ground structure housing Download PDFInfo
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- CN204361258U CN204361258U CN201420823379.1U CN201420823379U CN204361258U CN 204361258 U CN204361258 U CN 204361258U CN 201420823379 U CN201420823379 U CN 201420823379U CN 204361258 U CN204361258 U CN 204361258U
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Abstract
It is rectangular-shaped three frequency microstrip antenna 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, described radiation patch comprises the first horizontal rectangular patch, be with straight-flanked ring paster jaggy, be with annular paster jaggy, first perpendicular rectangular patch, second perpendicular rectangular patch, 3rd perpendicular rectangular patch and the second horizontal rectangular patch, described ground plate is by horizontal rectangular slab with the arch sheet of circular flaw block splices.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 rectangular-shaped three frequency microstrip antenna 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 rectangular-shaped three frequency microstrip antenna 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 rectangular-shaped three frequency microstrip antenna 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 horizontal rectangular patch, be with straight-flanked ring paster jaggy, be with annular paster jaggy, first perpendicular rectangular patch, second perpendicular rectangular patch, 3rd perpendicular rectangular patch and the second horizontal rectangular patch, described ground plate is spliced by horizontal rectangular slab with the arch sheet of circular flaw block,
First horizontal rectangular patch is positioned at the band positive upper end of straight-flanked ring paster jaggy, hypomere breach two ends with annular paster jaggy respectively rectangular patch perpendicular with first are connected with the upper end of the second perpendicular rectangular patch, breach two ends, lower end with the straight-flanked ring paster jaggy respectively left side of rectangular patch perpendicular with first and the right side of the second perpendicular rectangular patch are connected, the upper part of the first perpendicular rectangular patch and the second perpendicular rectangular patch and band annular paster jaggy are positioned at inside band straight-flanked ring paster jaggy, first perpendicular rectangular patch is connected with the second horizontal rectangular patch with the bottom of the second perpendicular rectangular patch, the left side of the first perpendicular rectangular patch is equal with the length of the second horizontal rectangular patch with the distance on the right side of the second perpendicular rectangular patch, the middle upper end of the second horizontal rectangular patch connects the 3rd perpendicular rectangular patch, lower end overlaps with medium substrate lower end.
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 long L1 of the first horizontal rectangular patch is 1mm, and wide W1 is 3.6mm, the hem width L2 of the upper end with straight-flanked ring paster jaggy is 0.8mm, the distance W7 of left end distance the first horizontal rectangular patch left end with straight-flanked ring paster jaggy is 7.75mm, the wide W6 of the right and left with straight-flanked ring paster jaggy is 0.5mm, be 20.4mm with the long L3 inside straight-flanked ring paster jaggy, wide W2 is 18.1mm, the hem width L4 of the lower end with straight-flanked ring paster jaggy is 0.9mm, distance W3 on the right side of the perpendicular rectangular patch of right-hand member distance second with straight-flanked ring paster jaggy is 7.6mm, distance L6 with straight-flanked ring paster lower end outside distance medium substrate lower end jaggy is 9.2mm, inside radius R2 with annular paster jaggy is 4mm, outer radius R1 is 5mm, and distance of center circle is 22mm from the distance L8 of medium substrate lower end, the distance L7 of the upper end distance band straight-flanked ring paster lower end inside jaggy of the first perpendicular rectangular patch is 7.3mm, and the wide W5 of the second perpendicular rectangular patch is 0.95mm, and the long Wf of the second horizontal rectangular patch is 3.9mm, and wide Lf is 3.6mm, the 3rd perpendicular long L5 of rectangular patch is 6.4mm, and wide W4 is 1mm.
Further, the length of the horizontal rectangular slab in ground plate 2 is equal with the wide W length of medium substrate is 23mm, and wide Lg is 1.5mm; The radius R 4 of the arch sheet in ground plate 2 is 6.8mm; Circular flaw block radius R 3 is 2mm, and the center of circle of circular flaw block overlaps with the center of circle of arch sheet, and the distance Ld of the distance ground plate bottom, lower end of circular flaw block is 1.5mm
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, the utility model provide a kind of be rectangular-shaped three frequency microstrip antenna based on defect ground structure housing, 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 horizontal rectangular patch 3, be with straight-flanked ring paster 4 jaggy, be with annular paster 5 jaggy, first perpendicular rectangular patch 6, second perpendicular rectangular patch 7, 3rd perpendicular rectangular patch 8 and the second horizontal rectangular patch 9, described ground plate 2 is spliced by horizontal rectangular slab with the arch sheet of circular flaw block 10,
First horizontal rectangular patch 3 is positioned at the band positive upper end of straight-flanked ring paster jaggy, hypomere breach two ends with annular paster jaggy respectively rectangular patch perpendicular with first are connected with the upper end of the second perpendicular rectangular patch, breach two ends, lower end with the straight-flanked ring paster jaggy respectively left side of rectangular patch perpendicular with first and the right side of the second perpendicular rectangular patch are connected, the upper part of the first perpendicular rectangular patch and the second perpendicular rectangular patch and band annular paster jaggy are positioned at inside band straight-flanked ring paster jaggy, first perpendicular rectangular patch is connected with the second horizontal rectangular patch with the bottom of the second perpendicular rectangular patch, the left side of the first perpendicular rectangular patch is equal with the length of the second horizontal rectangular patch with the distance on the right side of the second perpendicular rectangular patch, the middle upper end of the second horizontal rectangular patch connects the 3rd perpendicular rectangular patch, lower end overlaps with medium substrate lower end.
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 34mm, and wide W is 23mm, and thick is 1.6mm;
The long L1 of the first horizontal rectangular patch is 1mm, and wide W1 is 3.6mm, the hem width L2 of the upper end with straight-flanked ring paster jaggy is 0.8mm, the distance W7 of left end distance the first horizontal rectangular patch left end with straight-flanked ring paster jaggy is 7.75mm, the wide W6 of the right and left with straight-flanked ring paster jaggy is 0.5mm, be 20.4mm with the long L3 inside straight-flanked ring paster jaggy, wide W2 is 18.1mm, the hem width L4 of the lower end with straight-flanked ring paster jaggy is 0.9mm, distance W3 on the right side of the perpendicular rectangular patch of right-hand member distance second with straight-flanked ring paster jaggy is 7.6mm, distance L6 with straight-flanked ring paster lower end outside distance medium substrate lower end jaggy is 9.2mm, inside radius R2 with annular paster jaggy is 4mm, outer radius R1 is 5mm, and distance of center circle is 22mm from the distance L8 of medium substrate lower end, the distance L7 of the upper end distance band straight-flanked ring paster lower end inside jaggy of the first perpendicular rectangular patch is 7.3mm, and the wide W5 of the second perpendicular rectangular patch is 0.95mm, and the long Wf of the second horizontal rectangular patch is 3.9mm, and wide Lf is 3.6mm, the 3rd perpendicular long L5 of rectangular patch is 6.4mm, and wide W4 is 1mm.
The length of the horizontal rectangular slab in ground plate 2 is equal with the wide W length of medium substrate is 23mm, and wide Lg is 1.5mm; The radius R 4 of the arch sheet in ground plate 2 is 6.8mm; Circular flaw block radius R 3 is 2mm, and the center of circle of circular flaw block overlaps with the center of circle of arch sheet, and the distance Ld of the distance ground plate bottom, lower end of circular flaw block is 1.5mm.
The three frequency microstrip antenna that the utility model provides provides 0.1GHz, 1.0GHz and 1.26GHz tri-impedance bandwidths, working frequency range is respectively 2.39 ~ 2.49GHz, 3.22 ~ 4.22GHZ and 4.63 ~ 5.89GHz, and resonance frequency is respectively 2.45GHz, 3.5GHz and 5.47GHz.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-22.5dB in the return loss at resonance point place, and-45.7dB and-25.1dB, 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 rectangular-shaped three frequency microstrip antenna 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 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 horizontal rectangular patch, be with straight-flanked ring paster jaggy, be with annular paster jaggy, first perpendicular rectangular patch, second perpendicular rectangular patch, 3rd perpendicular rectangular patch and the second horizontal rectangular patch, described ground plate is spliced by horizontal rectangular slab with the arch sheet of circular flaw block,
Described first horizontal rectangular patch is positioned at the positive upper end of described band straight-flanked ring jaggy paster, the hypomere breach two ends of described band annular jaggy paster are erected rectangular patch respectively and are connected with the upper end of the described second perpendicular rectangular patch with described first, the left side of rectangular patch perpendicular with described first and the right side of the described second perpendicular rectangular patch are connected respectively at the breach two ends, lower end of described band straight-flanked ring jaggy paster, upper part and the described band annular jaggy paster of the described first perpendicular rectangular patch and the described second perpendicular rectangular patch are positioned at inside described band straight-flanked ring paster jaggy, described first perpendicular rectangular patch is connected with described second horizontal rectangular patch with the bottom of the described second perpendicular rectangular patch, the left side of the described first perpendicular rectangular patch is equal with the length of described second horizontal rectangular patch with the distance on the right side of the described second perpendicular rectangular patch, the middle upper end of described second horizontal rectangular patch connects the described 3rd perpendicular rectangular patch, lower end overlaps with described medium substrate lower end.
2. a kind of is as claimed in claim 1 rectangular-shaped three frequency microstrip antenna 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 rectangular-shaped three frequency microstrip antenna 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 rectangular-shaped three frequency microstrip antenna based on defect ground structure housing, and it is characterized in that, the long L1 of described first horizontal rectangular patch is 1mm, and wide W1 is 3.6mm, the hem width L2 of the upper end of described band straight-flanked ring paster jaggy is 0.8mm, the left end of described band straight-flanked ring jaggy paster is 7.75mm apart from the distance W7 of described first horizontal rectangular patch left end, the wide W6 of the right and left of described band straight-flanked ring jaggy paster is 0.5mm, long L3 inside described band straight-flanked ring jaggy paster is 20.4mm, wide W2 is 18.1mm, the hem width L4 of the lower end of described band straight-flanked ring paster jaggy is 0.9mm, the distance W3 of right-hand member apart from described second on the right side of perpendicular rectangular patch of described band straight-flanked ring jaggy paster is 7.6mm, described band straight-flanked ring jaggy paster lower end outside is 9.2mm apart from the distance L6 of described medium substrate lower end, the inside radius R2 of described band annular paster jaggy is 4mm, outer radius R1 is 5mm, and described distance of center circle is 22mm from the distance L8 of medium substrate lower end, the upper end of the described first perpendicular rectangular patch is 7.3mm apart from the distance L7 of described band straight-flanked ring paster jaggy lower end inside, and the wide W5 of the described second perpendicular rectangular patch is 0.95mm, and the long Wf of described second horizontal rectangular patch is 3.9mm, and wide Lf is 3.6mm, the described 3rd perpendicular long L5 of rectangular patch is 6.4mm, and wide W4 is 1mm.
5. a kind of is as claimed in claim 1 rectangular-shaped three frequency microstrip antenna based on defect ground structure housing, and it is characterized in that, the length of the horizontal rectangular slab in described ground plate is equal with the wide W length of described medium substrate is 23mm, and wide Lg is 1.5mm; The radius R 4 of the arch sheet in described ground plate is 6.8mm; Described circular flaw block radius R 3 is 2mm, and the center of circle of described circular flaw block overlaps with the center of circle of described arch sheet, and the lower end of described circular flaw block is 1.5mm apart from the distance Ld of described ground plate bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420823379.1U CN204361258U (en) | 2014-12-22 | 2014-12-22 | A kind of is rectangular-shaped three frequency microstrip antenna based on defect ground structure housing |
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| CN201420823379.1U CN204361258U (en) | 2014-12-22 | 2014-12-22 | A kind of is rectangular-shaped three frequency microstrip antenna based on defect ground structure housing |
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| CN204361258U true CN204361258U (en) | 2015-05-27 |
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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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| 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 |
|---|---|---|---|
| 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 |