CN205069864U - Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular - Google Patents
Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular Download PDFInfo
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- CN205069864U CN205069864U CN201520835604.8U CN201520835604U CN205069864U CN 205069864 U CN205069864 U CN 205069864U CN 201520835604 U CN201520835604 U CN 201520835604U CN 205069864 U CN205069864 U CN 205069864U
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Abstract
The utility model provides a three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular, including the medium base plate, radiation paster and ground plate, the radiation paster and the grounding plate are arranged symmetrically in the central line of the medium substrate, the radiation paster is located the upper surface of medium base plate, the grounding plate is under the back surface of the medium substrate, the radiation paster is including setting up at inside arc paster and the first perpendicular rectangle paster of annular paster, and the second erects the rectangle paster, annular paster bottom is connected bottom the medium base plate through second rectangle paster, the arc paster is open -top's arc, its bottom is connected with the inside lower extreme of annular paster through first perpendicular rectangle paster, the ground plate is formed by arch sheet and the rectangular plate concatenation that has circular defect piece, and the arch sheet top is by the flat plane that is of a horizontal line -intercept. The utility model discloses a frequency channel bandwidth has multifrequency section characteristic and stability simultaneously that three frequently the microstrip antenna quality are light, small, can effectively reduce return loss, launch higher is provided.
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 (DefectedGroundStructure, DGS) is one of hot technology of microwave regime newly-developed, and 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.
Summary of the invention
It is the three frequency microstrip antenna of irregular oval 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.
The utility model provide a kind of be the three frequency microstrip antenna of irregular oval 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 annular paster, arc paster, first perpendicular rectangular patch, second perpendicular rectangular patch, it is inner that described arc paster and the first perpendicular rectangular patch are arranged on annular paster, be connected with bottom medium substrate by the second rectangular patch bottom wherein said annular paster, described arc paster is open-topped arc, be connected with the lower end of annular paster inside by the first perpendicular rectangular patch bottom it,
Above-described ground plate is spliced by arch sheet with the rectangular slab of circular flaw block, described arch sheet top by horizontal line truncated be a plane.
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 0.8mm.
Further, described annular paster is irregular ellipse, and its outer transverse radius B2 is 8.8mm, minor axis radius A2 is 11mm, interior transverse radius B1 is 8mm, minor axis radius A1 is 10mm, and the distance L5 of outer elliptic focus and interior elliptic focus heart line is in the dielectric substrate 0.7mm; Described arc paster exradius R2 is 5mm, and inner circle radius R1 is 5.5mm, and the distance L3 of the inner circle center of circle and cylindrical center of circle heart line is in the dielectric substrate 0.7mm; The distance L4 of described interior elliptic focus and inner circle center of circle heart line is in the dielectric substrate 3mm, and the inner circle center of circle and medium substrate base distance L2 are 19.5mm.
Further, the long L1 of the described first perpendicular rectangular patch is 2.5mm, and wide W1 is 1.2mm, and the long Lf of the described second perpendicular rectangular patch is 12mm, and wide Wf is 2.4mm.
Further, the long W of the rectangular slab in described ground plate is 25mm, and wide Lg is 7mm; The radius R 4 of the arch sheet in described ground plate is 20mm, and the plane that described arch sheet upper end is truncated and medium substrate distance from bottom L7 are 10mm; The described circular flaw block center of circle is arranged on the center line of medium substrate, and its radius R 3 is 1.5mm, and circular flaw block bottom tangent and medium substrate distance from bottom L6 are 4.1mm.
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 is the three frequency microstrip antenna Facad structure schematic diagram of irregular oval ring-type based on defect ground structure housing.
Figure 2 shows that the utility model is the three frequency microstrip antenna structure schematic diagram of irregular oval ring-type based on defect ground structure housing.
Figure 3 shows that the utility model is the three frequency microstrip antenna front parameters schematic diagram of irregular oval ring-type based on defect ground structure housing.
Figure 4 shows that the utility model is the three frequency microstrip antenna back side parameters schematic diagram of irregular oval ring-type based on defect ground structure housing.
Figure 5 shows that the utility model is the return loss characteristic curve diagram of the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing.
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.
In figure: 1. medium substrate; 2. ground plate; 3. annular paster; 4. arc paster; 5. the first perpendicular rectangular patch; 6. the second perpendicular rectangular patch; 7. rectangular slab; 8. arch sheet; 9. defect block.
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.
As depicted in figs. 1 and 2, the utility model comprises medium substrate 1, radiation patch and ground plate 2, described radiation patch and described ground plate are arranged symmetrically with along described medium substrate 1 center line, described radiation patch is positioned at the upper surface of described medium substrate 1, described ground plate 2 is in described medium substrate 1 lower rear, described radiation patch comprises annular paster 3, arc paster 4, first perpendicular rectangular patch 5, second perpendicular rectangular patch 6, it is inner that described arc paster 4 and the first perpendicular rectangular patch 5 are arranged on annular paster 3, be connected with bottom medium substrate 1 by the second perpendicular rectangular patch 6 bottom wherein said annular paster 3, described arc paster 4 is open-topped arc, be connected with the lower end of annular paster 3 inside by the first perpendicular rectangular patch 5 bottom it,
Above-described ground plate 2 is spliced by arch sheet 8 with the rectangular slab 7 of circular flaw block 9, described arch sheet 8 top by horizontal line truncated be a plane.
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 is obtained by rectangular slab 7 with the arch sheet 8 of circular flaw block 9 by the correct position etching at ground plate 2, 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:
The long L of medium substrate is 35mm, and wide W is 25mm, and thick is 0.8mm;
Described annular paster 3 is irregular ellipse, its outer transverse radius B2 is 8.8mm, minor axis radius A2 is 11mm, and interior transverse radius B1 is 8mm, minor axis radius A1 is 10mm, and outer elliptic focus and interior elliptic focus are 0.7mm at the distance L5 of medium substrate 1 center line; Described arc paster 4 exradius R2 is 5mm, and inner circle radius R1 is 5.5mm, and the inner circle center of circle and the cylindrical center of circle are 0.7mm at the distance L3 of medium substrate 1 center line; Described interior elliptic focus and the inner circle center of circle are 3mm at the distance L4 of medium substrate 1 center line, and the inner circle center of circle and medium substrate 1 base distance L2 are 19.5mm.
The long L1 of the described first perpendicular rectangular patch 5 is 2.5mm, and wide W1 is 1.2mm, and the long Lf of the described second perpendicular rectangular patch 6 is 12mm, and wide Wf is 2.4mm.
The long W of the rectangular slab 7 in described ground plate 2 is 25mm, and wide Lg is 7mm; The radius R 4 of the arch sheet 8 in described ground plate 2 is 20mm, and the plane that described arch sheet 8 upper end is truncated and medium substrate 1 distance from bottom L7 are 10mm; Described circular flaw block 9 center of circle is arranged on the center line of medium substrate 1, and its radius R 3 is 1.5mm, and circular flaw block 9 bottom tangent and medium substrate 1 distance from bottom L6 are 4.1mm.
The three frequency microstrip antenna that the utility model provides provides 0.18GHz, 0.38GHz and 0.79GHz tri-impedance bandwidths, working frequency range is respectively 2.39 ~ 2.57GHz, 3.34 ~ 3.72GHZ and 5.42 ~ 6.21GHz, and resonance frequency is respectively 2.48GHz, 3.48GHz and 5.82GHz.As shown in Figure 5, antenna of the present utility model is respectively-23.5dB in the return loss at resonance point place, and-20.48dB and-49.62dB, 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 (6)
1. one kind is the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, comprise medium substrate (1), radiation patch and ground plate (2), described radiation patch and described ground plate are arranged symmetrically with along described medium substrate (1) center line, described radiation patch is positioned at the upper surface of described medium substrate (1), described ground plate (2) is in described medium substrate (1) lower rear, it is characterized in that, described radiation patch comprises annular paster (3), arc paster (4), first perpendicular rectangular patch (5), second perpendicular rectangular patch (6), it is inner that described arc paster (4) and the first perpendicular rectangular patch (5) are arranged on annular paster (3), wherein said annular paster (3) bottom is connected with medium substrate (1) bottom by the second perpendicular rectangular patch (6), described arc paster (4) is open-topped arc, be connected by the lower end that the first perpendicular rectangular patch (5) is inner with annular paster (3) bottom it,
Above-described ground plate (2) is spliced by arch sheet (8) with the rectangular slab (7) of circular flaw block (9), described arch sheet (8) top by horizontal line truncated be a plane.
2. a kind of is as claimed in claim 1 the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, it is characterized in that: described medium substrate (1) is FR4 epoxy plate.
3. a kind of is as claimed in claim 1 the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, it is characterized in that: the long L of described medium substrate (1) is 35mm, and wide W is 25mm, and thick H is 0.8mm.
4. a kind of is as claimed in claim 1 the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, it is characterized in that: described annular paster (3) is irregular ellipse, its outer transverse radius B2 is 8.8mm, minor axis radius A2 is 11mm, interior transverse radius B1 is 8mm, minor axis radius A1 is 10mm, and outer elliptic focus and interior elliptic focus are 0.7mm at the distance L5 of medium substrate (1) center line;
Described arc paster (4) exradius R2 is 5mm, and inner circle radius R1 is 5.5mm, and the inner circle center of circle and the cylindrical center of circle are 0.7mm at the distance L3 of medium substrate (1) center line;
Above-described interior elliptic focus and the inner circle center of circle are 3mm at the distance L4 of medium substrate (1) center line, and the inner circle center of circle and medium substrate (1) base distance L2 are 19.5mm.
5. a kind of is as claimed in claim 1 the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, it is characterized in that: the long L1 of the described first perpendicular rectangular patch (5) is 2.5mm, wide W1 is 1.2mm, the long Lf of the described second perpendicular rectangular patch (6) is 12mm, and wide Wf is 2.4mm.
6. a kind of is as claimed in claim 1 the three frequency microstrip antenna of irregular oval ring-type based on defect ground structure housing, it is characterized in that: the long W of the rectangular slab (7) in described ground plate (2) is 25mm, and wide Lg is 7mm; The radius R 4 of the arch sheet (8) in described ground plate (2) is 20mm, and the plane that described arch sheet (8) upper end is truncated and medium substrate (1) distance from bottom L7 are 10mm; Described circular flaw block (9) center of circle is arranged on the center line of medium substrate (1), and its radius R 3 is 1.5mm, and circular flaw block (9) bottom tangent and medium substrate (1) distance from bottom L6 are 4.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835604.8U CN205069864U (en) | 2015-10-27 | 2015-10-27 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835604.8U CN205069864U (en) | 2015-10-27 | 2015-10-27 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
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| CN205069864U true CN205069864U (en) | 2016-03-02 |
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| CN201520835604.8U Expired - Fee Related CN205069864U (en) | 2015-10-27 | 2015-10-27 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
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Cited By (8)
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| CN106229640A (en) * | 2016-08-31 | 2016-12-14 | 重庆大学 | double-layer wideband microstrip antenna |
| CN107978855A (en) * | 2017-11-06 | 2018-05-01 | 西安电子科技大学 | Wideband monopole microstrip antenna |
| CN109638444A (en) * | 2019-01-03 | 2019-04-16 | 西交利物浦大学 | A kind of loop aerial applied to Implanted cardiac pacemaker wireless charging |
| CN109687119A (en) * | 2018-11-23 | 2019-04-26 | 路飞 | Double arcuation RF energies of slotting absorb microstrip antenna |
| CN105826675B (en) * | 2016-05-26 | 2019-06-18 | 华南理工大学 | A kind of three frequency microstrip antenna |
| CN109935968A (en) * | 2019-04-18 | 2019-06-25 | 南京工业大学 | Bicyclic dual-band antenna |
| WO2021184157A1 (en) * | 2020-03-16 | 2021-09-23 | 华为技术有限公司 | Antenna and antenna array |
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- 2015-10-27 CN CN201520835604.8U patent/CN205069864U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105826675B (en) * | 2016-05-26 | 2019-06-18 | 华南理工大学 | A kind of three frequency microstrip antenna |
| CN106229640A (en) * | 2016-08-31 | 2016-12-14 | 重庆大学 | double-layer wideband microstrip antenna |
| CN107978855A (en) * | 2017-11-06 | 2018-05-01 | 西安电子科技大学 | Wideband monopole microstrip antenna |
| CN107978855B (en) * | 2017-11-06 | 2019-10-11 | 西安电子科技大学 | Wideband monopole microstrip antenna |
| CN109687119A (en) * | 2018-11-23 | 2019-04-26 | 路飞 | Double arcuation RF energies of slotting absorb microstrip antenna |
| CN109687119B (en) * | 2018-11-23 | 2020-10-16 | 深圳市派讯威电子有限公司 | Slotted double-arc radio frequency energy absorption microstrip antenna |
| CN109638444A (en) * | 2019-01-03 | 2019-04-16 | 西交利物浦大学 | A kind of loop aerial applied to Implanted cardiac pacemaker wireless charging |
| CN109638444B (en) * | 2019-01-03 | 2024-02-02 | 西交利物浦大学 | Annular antenna applied to wireless charging of implantable cardiac pacemaker |
| CN109935968A (en) * | 2019-04-18 | 2019-06-25 | 南京工业大学 | Bicyclic dual-band antenna |
| WO2021184157A1 (en) * | 2020-03-16 | 2021-09-23 | 华为技术有限公司 | Antenna and antenna array |
| CN115244781A (en) * | 2020-03-16 | 2022-10-25 | 华为技术有限公司 | Antenna and antenna array |
| CN115244781B (en) * | 2020-03-16 | 2023-11-03 | 华为技术有限公司 | Antenna and antenna array |
| CN115020968A (en) * | 2022-05-27 | 2022-09-06 | 西安理工大学 | Multi-band tapered width split loop broadband antenna |
| CN115020968B (en) * | 2022-05-27 | 2024-04-19 | 西安理工大学 | Multi-band gradual change width fractal ring broadband 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20161027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |