CN204289706U - A kind of is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing - Google Patents
A kind of is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing Download PDFInfo
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- CN204289706U CN204289706U CN201420818555.2U CN201420818555U CN204289706U CN 204289706 U CN204289706 U CN 204289706U CN 201420818555 U CN201420818555 U CN 201420818555U CN 204289706 U CN204289706 U CN 204289706U
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Abstract
It is the three frequency microstrip antenna of positive nonagon 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, described radiation patch comprises and has the positive nonagon paster of circular groove, annular paster, the equilateral triangle paster having circular groove, the first perpendicular rectangular patch, the second perpendicular rectangular patch, the 3rd perpendicular rectangular patch and circular patch, by the defect block be made up of horizontal rectangle and equilateral triangle in the middle part of described ground plate.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 positive nonagon 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
It is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing that one of the utility model object is to provide a kind of, 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.
A kind of is the three frequency microstrip antenna of positive nonagon 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 the surface on medium substrate, ground plate is in medium substrate lower rear, radiation patch comprises the positive nonagon paster having circular groove, annular paster, have the equilateral triangle paster of circular groove, first perpendicular rectangular patch, second perpendicular rectangular patch, 3rd perpendicular rectangular patch and circular patch, ground plate is rectangular slab, by the defect block be made up of horizontal rectangle and equilateral triangle in the middle part of it,
Annular paster is connected with the positive nonagon paster top having circular groove by the first perpendicular rectangular patch, the positive nonagon paster low side one jiao having circular groove is connected with the 3rd perpendicular rectangular patch, have the equilateral triangle paster of circular groove, it is inner that second perpendicular rectangular patch and circular patch are positioned at the positive nonagon paster having circular groove, the equilateral triangle paster having circular groove is connected with bottom the positive nonagon paster having circular groove with circular patch by the second perpendicular rectangular patch, in defect block, horizontal rectangle is positioned at directly over equilateral triangle, horizontal rectangle is while with equilateral triangle while be located on the same line.
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 length of medium substrate is 39mm, and wide is 21mm, and thick is 1.6mm.
Further, the inside radius of annular paster is 1.84mm, and outer radius is 3.0mm; First perpendicular rectangular patch is long is 1.4mm, and wide is 1.3mm; The radius having circular groove in the positive nonagon paster of circular groove is 8.79mm, and the external radius of a circle of positive nonagon is 10.5mm, and the center of circular groove is higher than the center of circle 0.8mm of positive nonagon circumscribed circle; The radius having circular groove in the equilateral triangle paster of circular groove is 2.6mm, and the length of side of equilateral triangle is 12.07mm, and the center of circular groove is lower than the center of circle 0.7mm of positive nonagon circumscribed circle; Second perpendicular rectangular patch is long is 0.85mm, and wide is 0.7mm; The radius of circular patch is 1.2mm; The length of the 3rd perpendicular rectangular patch is 11mm, and wide is 2.6mm;
Further, the horizontal length of ground plate is equal with the wide length of medium substrate is 21mm, and longitudinally wide is 8.3mm; In defect block, the length of horizontal rectangular patch is 6mm, and wide is 4.1mm, and the base of horizontal rectangular patch is apart from ground plate bottom 2.9mm; The length of side of defect block equilateral triangle is equal with the wide length of the 3rd perpendicular rectangular patch, is 2.6mm, equilateral triangle centre-to-centre spacing ground plate bottom 2.7mm.
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 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 the three frequency microstrip antenna of positive nonagon ring-type 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 the upper surface of medium substrate 1, ground plate 2 is in medium substrate 1 lower rear, described radiation patch comprises the positive nonagon paster 3 having circular groove, annular paster 4, have the equilateral triangle paster 5 of circular groove, first perpendicular rectangular patch 6, second perpendicular rectangular patch 7, 3rd perpendicular rectangular patch 8 and circular patch 9, by the defect block 10 be made up of horizontal rectangle and equilateral triangle on described ground plate 2 middle part surface,
Have the positive nonagon paster 3 of circular groove, annular paster 4, have the equilateral triangle paster 5 of circular groove, first perpendicular rectangular patch 6, second perpendicular rectangular patch 7, 3rd perpendicular rectangular patch 8 and circular patch 9 are positioned at the upper surface of medium substrate 1, ground plate 2 is positioned at the lower surface of medium substrate 1, annular paster 4 is connected with positive nonagon paster 3 top having circular groove by the first perpendicular rectangular patch 6, positive nonagon paster 3 low side one jiao having circular groove is connected with the 3rd perpendicular rectangular patch 8, have the equilateral triangle paster 5 of circular groove, it is inner that second perpendicular rectangular patch 7 and circular patch 9 are positioned at the positive nonagon paster 3 having circular groove, the equilateral triangle paster 5 having circular groove is connected with bottom the positive nonagon paster 3 having circular groove with circular patch 9 by the second perpendicular rectangular patch 7, in described defect block 10, horizontal rectangle is positioned at directly over equilateral triangle, horizontal rectangle is while with equilateral triangle while be located on the same line.
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 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 R1 of annular paster 4 is 1.84mm, outer radius R2 is 3.0mm; The first perpendicular long L1 of rectangular patch 6 is 1.4mm, and wide W1 is 1.3mm; Have the radius R 3 of circular groove in the positive nonagon paster 3 of circular groove for 8.79mm, the radius R 4 of positive nonagon circumscribed circle is 10.5mm, and the center of circular groove is 0.8mm higher than the distance d1 in the center of circle of positive nonagon circumscribed circle; Have the radius R 5 of circular groove in the equilateral triangle paster 5 of circular groove for 2.6mm, the length of side d2 of equilateral triangle is 12.07mm, and the center of circular groove is 0.7mm lower than the distance of center circle of positive nonagon circumscribed circle from d3; The second perpendicular long L2 of rectangle 7 paster is 0.85mm, and wide W2 is 0.7mm; The radius R 6 of circular patch 9 is 1.2mm; The long L3 of the 3rd perpendicular rectangular patch 8 is 11mm, and wide W3 is 2.6mm; The horizontal long L4 of ground plate 2 is equal with the length of the wide W of medium substrate 1 is 21mm, and longitudinally wide W4 is 8.3mm; In described defect block 10, the long L5 of horizontal rectangular patch is 6mm, and wide W5 is 4.1mm, and the distance d4 of distance ground plate 2 bottom, base of horizontal rectangular patch is 2.9mm; In described defect block 10, the length of side d5 of equilateral triangle is equal with the length of the wide W3 of the described 3rd perpendicular rectangular patch 8, and be 2.6mm, the distance d6 of equilateral triangle centre-to-centre spacing ground plate 2 bottom is 2.7mm.
The three frequency microstrip antenna that the utility model provides provides 0.18GHz, 0.70GHz and 0.80GHz tri-impedance bandwidths, working frequency range is respectively 2.31 ~ 2.49GHz, 3.10 ~ 3.80GHZ and 5.09 ~ 5.89GHz, and resonance frequency is respectively 2.42GHz, 3.46GHz and 5.44GHz.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-22.47dB in the return loss at resonance point place, and-21.87dB and-22.86dB, 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 positive nonagon 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 the upper surface of described medium substrate, described ground plate is positioned at described medium substrate lower rear, it is characterized in that, described radiation patch comprises the positive nonagon paster having circular groove, annular paster, have the equilateral triangle paster of circular groove, first perpendicular rectangular patch, second perpendicular rectangular patch, 3rd perpendicular rectangular patch and circular patch, described ground plate is rectangular slab, its surface middle part is by the defect block be made up of horizontal rectangle and equilateral triangle,
Described annular paster is connected with the described positive nonagon paster top having circular groove by the described first perpendicular rectangular patch, described positive one jiao, the nonagon paster bottom having circular groove is connected with the described 3rd perpendicular rectangular patch, the described equilateral triangle paster having circular groove, the positive nonagon paster having circular groove described in described second perpendicular rectangular patch and described circular patch are positioned at is inner, the described equilateral triangle paster having circular groove is connected with bottom the described positive nonagon paster having circular groove with described circular patch by the described second perpendicular rectangular patch, in described defect block, horizontal rectangle is positioned at directly over equilateral triangle, horizontal rectangle is while with equilateral triangle while be located on the same line.
2. a kind of is as claimed in claim 1 the three frequency microstrip antenna of positive nonagon 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 positive nonagon ring-type based on defect ground structure housing, and it is characterized in that, the length of described medium substrate is 39mm, and wide is 21mm, and thick is 1.6mm.
4. a kind of is as claimed in claim 1 the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing, and it is characterized in that, the inside radius of described annular paster is 1.84mm, and outer radius is 3.0mm; Described first perpendicular rectangular patch is long is 1.4mm, and wide is 1.3mm; The described radius having circular groove in the positive nonagon paster of circular groove is 8.79mm, and the external radius of a circle of described positive nonagon is 10.5mm, and the center of circular groove is higher than the center of circle 0.8mm of described positive nonagon circumscribed circle; The described radius having circular groove in the equilateral triangle paster of circular groove is 2.6mm, and the length of side of equilateral triangle is 12.07mm, and the center of circular groove is lower than the described center of circle 0.7mm having positive nonagon circumscribed circle in the positive nonagon paster of circular groove; Described second perpendicular rectangular patch is long is 0.85mm, and wide is 0.7mm; The radius of described circular patch is 1.2mm; The length of the described 3rd perpendicular rectangular patch is 11mm, and wide is 2.6mm.
5. a kind of is as claimed in claim 1 the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing, it is characterized in that, described ground plate laterally long equal with the wide length of described medium substrate be 21mm, longitudinal direction is wide is 8.3mm; In described defect block, the length of horizontal rectangle is 6mm, and wide is 4.1mm, and the base of described horizontal rectangle is apart from described ground plate bottom 2.9mm; In described defect block, the length of side of equilateral triangle is equal with the wide length of the described 3rd perpendicular rectangular patch, is 2.6mm, equilateral triangle centre-to-centre spacing ground plate bottom 2.7mm in described defect block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818555.2U CN204289706U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818555.2U CN204289706U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing |
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| Publication Number | Publication Date |
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| CN204289706U true CN204289706U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420818555.2U Expired - Fee Related CN204289706U (en) | 2014-12-22 | 2014-12-22 | A kind of is the three frequency microstrip antenna of positive nonagon ring-type based on defect ground structure housing |
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| CN (1) | CN204289706U (en) |
Cited By (1)
| 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 |
-
2014
- 2014-12-22 CN CN201420818555.2U patent/CN204289706U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |