CN204067574U - A kind of Compact type broadband octangle slot antenna - Google Patents
A kind of Compact type broadband octangle slot antenna Download PDFInfo
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- CN204067574U CN204067574U CN201420380475.3U CN201420380475U CN204067574U CN 204067574 U CN204067574 U CN 204067574U CN 201420380475 U CN201420380475 U CN 201420380475U CN 204067574 U CN204067574 U CN 204067574U
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- octangle
- slot antenna
- compact type
- medium substrate
- ground plate
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Abstract
The utility model discloses a kind of Compact type broadband octangle slot antenna, belong to antenna technical field.This antenna comprises medium substrate, ground plate, metal patch, microstrip line, feeder line and coaxial cable, the upper surface of described medium substrate is close to and is provided with ground plate, described ground plate is provided with octangle groove, the lower surface of described medium substrate is close to and is provided with rectangular metal paster, and the corner of metal patch merges with four disks respectively and obtains the new construction of corner outwards in circular arc projection; Medium substrate lower surface is close to by described microstrip line, and microstrip line one end is connected with metal patch, and the other end connects feeder line, and described feeder line is connected with the inner wire of coaxial cable again; Ground plate is close to dielectric layer and outer conductor is provided with the closed circle arc-shaped conductor be made up of rectangular metal shred.The utility model can reduce the lowest resonant frequency of antenna, the bandwidth of operation of effective extended antenna; The utility model also has simplicity of design, compact conformation, is easy to the advantage manufacturing and promote.
Description
Technical field
The utility model relates to antenna technical field, particularly relates to a kind of Compact type broadband octangle slot antenna.
Background technology
The demand of development to frequency bandwidth resource of radio communication is more and more higher, and plane slot antenna is applied in wireless communication system, contributes to broadening communication band, realizes high rate communication.Meanwhile, such antenna also have that cost is low, volume is little, lightweight, the distinguishing feature that is easy to the aspect such as integrated.In recent years, the research of slot antenna mainly concentrates on the width of expansion working frequency range and reduces to manufacture complexity aspect.Up to now, the increase bandwidth method adopted mainly comprises: increase working impedance bandwidth by the girth increasing groove, as chiseling flower shape groove, polygon groove etc. on ground plate, sipes limit is chiseled sulculus, merges difform groove; Difform tuning minor matters are connected, minor matters as trapezoidal in gradual change in line feed terminals design; Use the groove that coplanar wave guide feedback is multi-form; The gradual change slot antenna of design different structure.But in these methods, if frequency bandwidth is increased considerably, then designed groove and tuning minor matters shape comparatively complicated, add the difficulty of processing and manufacturing, and antenna structure is compact not, causes the significant wastage of confined space resource.
Therefore, be badly in need of now a kind of compact conformation of design, with low cost, be easy to integrated and there is wide band antenna.
Summary of the invention
In view of this, the purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of Compact type broadband octangle slot antenna.
The purpose of this utility model is achieved in that
A kind of Compact type broadband octangle slot antenna, comprises medium substrate, ground plate, metal patch, microstrip line, feeder line and coaxial cable,
The upper surface of described medium substrate is close to and is provided with ground plate, described ground plate is provided with octangle groove, the lower surface of described medium substrate is close to and is provided with rectangular metal paster, and the corner of metal patch merges with four disks respectively and obtains the new construction of corner outwards in circular arc projection; Medium substrate lower surface is close to by described microstrip line, and microstrip line one end is connected with metal patch, and the other end connects feeder line, and described feeder line is connected with the inner wire of coaxial cable again; Described coaxial cable also comprises dielectric layer and outer conductor; Described dielectric layer all contacts with the side of ground plate with the cross section of outer conductor, and on ground plate, is close to dielectric layer and outer conductor is provided with the closed circle arc-shaped conductor be made up of rectangular metal shred.
Further, described octangle groove has two identical square groove to merge to form; The limit of the first square groove is parallel to Rectangular Enclosure with Participating Media substrate, and is positioned at the center of Rectangular Enclosure with Participating Media substrate; The central rotation 45 degree of the second square groove around the first square groove on the basis of the first square groove forms.
Further, described feeder line is semi-cylindrical, and its planar section axis overlaps with microstrip line longitudinal central axis line, and its curvature portion is outside medium substrate.
Further, the radius of described four disks is identical, and the center of circle of four disks overlaps with four angles of rectangular metal paster respectively.
Further, the long L1 of described medium substrate is 37 ~ 39mm, and wide W1 is 34 ~ 36mm, and thick H1 is 1.51 ~ 1.69mm, and the length of side L2 of described square groove is 23.25 ~ 25.75mm.
Further, the long L3 of described rectangular metal paster is 13.30 ~ 14.70mm, and wide W2 is 10.45 ~ 11.55mm, and thick H2 is 0.016 ~ 0.018mm.
Further, the long L4 of described microstrip line is 11 ~ 13mm, W3 is 3 ~ 4mm.
Further, the radius R 1 of described disk is 1.90 ~ 2.10mm.
Further, the inner wire of described coaxial cable and the radius R 2 of feeder line are 0.57 ~ 0.63mm, and the length L6 of feeder line is 1.9 ~ 2.1mm; The length L5 of described coaxial cable is 9.50 ~ 10.50mm.
Further, the dielectric layer outer radius R3 of described coaxial cable is 2.85 ~ 3.15mm; The outer radius R4 of outer conductor is 2.5 ~ 3.5mm.
Compared to prior art, the advantage that the utility model has is: the utility model reduces the lowest resonant frequency of antenna by designing octangle groove on ground plate, and design merges disk in metal patch corner, the capacitive coupling degree between feeder line and octangle groove can be regulated, produce more resonant operational pattern, thus the bandwidth of operation of effective extended antenna; The utility model also has simplicity of design, compact conformation, is easy to the advantage manufacturing and promote, can be applicable in UMTS, WLAN, WiMAX wireless communication system.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is the overall structure figure of a kind of Compact type broadband octangle of the utility model slot antenna;
Fig. 2 is the vertical view of a kind of Compact type broadband octangle of the utility model slot antenna;
Fig. 3 is the front view of a kind of Compact type broadband octangle of the utility model slot antenna;
Fig. 4 is the end view of a kind of Compact type broadband octangle of the utility model slot antenna;
Fig. 5 emulates the utility model S parameter of obtaining with frequency variation curve figure;
Fig. 6 emulates the utility model VSWR parameter of obtaining with frequency variation curve figure;
Fig. 7 emulates the utility model antenna pattern obtained, dotted line represents the antenna pattern of E plane, solid line represents the antenna pattern of H plane, and subgraph (a), (b), (c), (d), (e), (f) represent the antenna pattern at Frequency point 2.0GHz, 2.8GHz, 4.5GHz, 5.4GHz, 6.0GHz, 6.4GHz place respectively;
Wherein: 1-medium substrate, 2-ground plate, 3-octangle groove, 4-metal patch, 5-disk, 6-microstrip line, 7-feeder line, 8-inner wire, 9-dielectric layer, 10-outer conductor, 11-circular arc conductor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the overall structure figure of a kind of Compact type broadband octangle of the utility model slot antenna; Fig. 2 is the vertical view of a kind of Compact type broadband octangle of the utility model slot antenna; Fig. 3 is the front view of a kind of Compact type broadband octangle of the utility model slot antenna; Fig. 4 is the end view of a kind of Compact type broadband octangle of the utility model slot antenna.With reference to Fig. 1,2,3 and 4, a kind of Compact type broadband octangle of the utility model slot antenna, comprise medium substrate 1, ground plate 2, metal patch 4, microstrip line 6, feeder line 7 and coaxial cable, the upper surface of described medium substrate 1 is close to and is provided with ground plate 2, described ground plate 2 is provided with octangle groove 3, the lower surface of described medium substrate 1 is close to and is provided with rectangular metal paster 4, and the corner of metal patch 4 merges with four disks 5 respectively and obtains the new construction of corner outwards in circular arc projection; Medium substrate 1 lower surface is close to by described microstrip line 6, and microstrip line 6 one end is connected with metal patch 4, and the other end connects feeder line 7, and described feeder line 7 is connected with the inner wire 8 of coaxial cable again; Described coaxial cable also comprises dielectric layer 9 and outer conductor 10; Described dielectric layer 9 all contacts with the side of ground plate 2 with the cross section of outer conductor 10, and on ground plate 2, is close to dielectric layer 9 and outer conductor 10 is provided with the closed circle arc-shaped conductor 11 be made up of rectangular metal shred.
The thin cuboid of medium substrate 1 one-tenth, it is long is expressed as L1, is widely expressed as W1, and thickness is expressed as H1, and material is FR4 epoxy resin board, and relative dielectric constant is 4.4, relative permeability 1.0, and loss angle tangent is 0.02.The thickness of the ground plate of copper that upper and lower two surfaces of medium substrate are arranged, metal radiation paster, metal feeder is identical.
The above-mentioned design with the metal patch of four disks obviously can increase the change in size degree of freedom of radiation patch, thus effectively regulates the broadband couple device degree between radiation patch and ground plate, to reach the object of broadening working band.
Described octangle groove 3 is merged by two identical square groove and forms; The limit of the first square groove is parallel to Rectangular Enclosure with Participating Media substrate 1, and is positioned at the center of Rectangular Enclosure with Participating Media substrate 1; The central rotation 45 degree of the second square groove around the first square groove on the basis of the first square groove forms.This octangle groove is compared with common rectangular channel or square groove, and the effective electric size in edge that eight angles of octangle groove significantly increase antenna slot, reduce further the minimum resonant operational frequency of antenna.
Described feeder line 7 is in semi-cylindrical, and its planar section axis overlaps with microstrip line longitudinal central axis line, and its curvature portion is outside medium substrate 1.
The radius of described four disks 5 is identical, and the center of circle of four disks 5 overlaps with four angles of rectangular metal paster 4 respectively.
After completing above-mentioned initial designs, high-frequency electromagnetic simulation software HFSS13.0 is used to carry out emulation experiment, simulation study shows that the position of paster and the effective working band of the size of size and groove to antenna have a great impact, and the parameters optimum size obtained by HFSS optimizational function is as shown in table 1.
The each parameters optimal size table of table 1 the utility model
| Parameter | Size (mm) |
| L1 | 38 |
| L2 | 24.5 |
| L3 | 14 |
| L4 | 12 |
| L5 | 10 |
| L6 | 2 |
| W1 | 35 |
| W2 | 11 |
| W3 | 3.35 |
| R1 | 2 |
| R2 | 0.6 |
| R3 | 2 |
| R4 | 3 |
| H1 | 1.6 |
| H2 | 0.017 |
In table: H2 not only represents the thickness of metal patch, can further represent the thickness of ground plate and microstrip line.
According to above-mentioned parameter, use the every characterisitic parameter of HFSS to designed slot antenna to carry out simulation analysis, respectively simulation analysis is carried out to voltage standing wave ratio VSWR, direction radiation gain.
Fig. 5 emulates the utility model S parameter of obtaining with frequency variation curve figure, and as shown in the figure, under S11<-10dB condition, the impedance bandwidth range of antenna of the present utility model is 1.92-6.4GHz.Antenna one of the present utility model has six resonance frequency centers, its value is respectively 2.19GHz, 2.72GHz, 3.89GHz, 5.48GHz, 5.95GHz, 7.21GHz, two resonance frequencys wherein near frequency low side are determined by the form of the shape of groove and radiation patch respectively, after four disks being merged by radiation patch of four resonance frequencys regulate stiffness of couplings to cause.The highest resonance frequency 7.21GHz is not in VSWR<2 impedance bandwidth range, but it still has certain effect to broadening antenna operating band.
Fig. 6 emulates the utility model VSWR parameter of obtaining with frequency variation curve figure, and as shown in the figure, the bandwidth range of VSWR<2 is 1.9-6.5GHz.In this bandwidth range, curve approximation is parallel to frequency axis, does not occur that precipitous peak ripples, and shows that voltage standing wave(VSW) characteristic is stable in bandwidth range performance, show that antenna can produce matched well with signal source in this frequency range, the electromagnetic energy more than 90% has been radiated free space.
Figure 7 shows that radiation pattern.In working band, Frequency point 2.0GHz, 2.8GHz, 4.5GHz, 5.4GHz, 6.0GHz, 6.4GHz emulation obtains radiation field of aerial E face and H face directional diagram respectively.As can be seen from the antenna pattern of antenna, when frequency is lower, directional diagram is symmetrical, and antenna H surface radiation field omnidirectional has stable radiation intensity, and directional diagram is approximately circular, has good omni-directional.E face directional diagram is dumbbell shaped.Along with the radiation characteristic change of the increase antenna of frequency increases, the omni-directional of H surface radiation field is slightly weak, E surface radiation field symmetry-violating.This shows the increase along with frequency, and the distribution of electric current around aerial radiation paster and groove of antenna occurs correspondingly to change, and the higher mode of radiation also occurs thereupon.It should be noted that the emulation directional diagram in the E face of antenna can produce certain deviation, mainly because coaxial cable is on the impact of antenna radiation characteristics compared with actual in low frequency situation.As can be seen from Figure 1, antenna size is less.The antenna gain of the present utility model emulated changes maximum frequency range mainly near 5GHz, and minimum frequency scope is near 1.9GHz and 6.4GHZ.The frequency range of antenna covers the 1920-1980MHz of the UMTS of requirement, the 2.4/5.2/5.8GHz of WLAN, and the 2.5/3.5/5.5GHz frequency range of WiMAX.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (10)
1. a Compact type broadband octangle slot antenna, comprises medium substrate, ground plate, metal patch, microstrip line, feeder line and coaxial cable, it is characterized in that:
The upper surface of described medium substrate is close to and is provided with ground plate, described ground plate is provided with octangle groove, the lower surface of described medium substrate is close to and is provided with rectangular metal paster, and the corner of metal patch merges with four disks respectively and obtains the new construction of corner outwards in circular arc projection; Medium substrate lower surface is close to by described microstrip line, and microstrip line one end is connected with metal patch, and the other end connects feeder line, and described feeder line is connected with the inner wire of coaxial cable again; Described coaxial cable also comprises dielectric layer and outer conductor; Described dielectric layer all contacts with the side of ground plate with the cross section of outer conductor, and on ground plate, is close to dielectric layer and outer conductor is provided with the closed circle arc-shaped conductor be made up of rectangular metal shred.
2. a kind of Compact type broadband octangle slot antenna according to claim 1, is characterized in that: described octangle groove has two identical square groove to merge to form; The limit of the first square groove is parallel to Rectangular Enclosure with Participating Media substrate, and is positioned at the center of Rectangular Enclosure with Participating Media substrate; The central rotation 45 degree of the second square groove around the first square groove on the basis of the first square groove forms.
3. a kind of Compact type broadband octangle slot antenna according to claim 1, it is characterized in that: described feeder line is semi-cylindrical, and its planar section axis overlaps with microstrip line longitudinal central axis line, its curvature portion is outside medium substrate.
4. a kind of Compact type broadband octangle slot antenna according to claim 1, is characterized in that: the radius of described four disks is identical, and the center of circle of four disks overlaps with four angles of rectangular metal paster respectively.
5. a kind of Compact type broadband octangle slot antenna according to claim 1, it is characterized in that: the long L1 of described medium substrate is 37 ~ 39mm, wide W1 is 34 ~ 36mm, and thick H1 is 1.51 ~ 1.69mm, and the length of side L2 of the square groove in octangle groove is 23.25 ~ 25.75mm.
6. a kind of Compact type broadband octangle slot antenna according to claim 1, is characterized in that: the long L3 of described rectangular metal paster is 13.30 ~ 14.70mm, and wide W2 is 10.45 ~ 11.55mm, and thick H2 is 0.016 ~ 0.018mm.
7. a kind of Compact type broadband octangle slot antenna according to claim 2, is characterized in that: the long L4 of described microstrip line is 11 ~ 13mm, W3 is 3 ~ 4mm.
8. a kind of Compact type broadband octangle slot antenna according to claim 3, is characterized in that: the radius R 1 of described disk is 1.90 ~ 2.10mm.
9. a kind of Compact type broadband octangle slot antenna according to claim 1, is characterized in that: the inner wire of described coaxial cable and the radius R 2 of feeder line are 0.57 ~ 0.63mm, and the length L6 of feeder line is 1.9 ~ 2.1mm; The length L5 of described coaxial cable is 9.50 ~ 10.50mm.
10. a kind of Compact type broadband octangle slot antenna according to claim 1, is characterized in that: the dielectric layer outer radius R3 of described coaxial cable is 2.85 ~ 3.15mm; The outer radius R4 of outer conductor is 2.5 ~ 3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380475.3U CN204067574U (en) | 2014-07-10 | 2014-07-10 | A kind of Compact type broadband octangle slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380475.3U CN204067574U (en) | 2014-07-10 | 2014-07-10 | A kind of Compact type broadband octangle slot antenna |
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| CN204067574U true CN204067574U (en) | 2014-12-31 |
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| CN201420380475.3U Expired - Fee Related CN204067574U (en) | 2014-07-10 | 2014-07-10 | A kind of Compact type broadband octangle slot antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051849A (en) * | 2014-07-10 | 2014-09-17 | 重庆大学 | Compact broadband octagonal groove antenna |
| CN111293428A (en) * | 2019-01-31 | 2020-06-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| CN111725625A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
-
2014
- 2014-07-10 CN CN201420380475.3U patent/CN204067574U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051849A (en) * | 2014-07-10 | 2014-09-17 | 重庆大学 | Compact broadband octagonal groove antenna |
| CN104051849B (en) * | 2014-07-10 | 2016-04-27 | 重庆大学 | A kind of Compact type broadband octangle slot antenna |
| CN111293428A (en) * | 2019-01-31 | 2020-06-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| CN111293428B (en) * | 2019-01-31 | 2021-03-16 | 展讯通信（上海）有限公司 | Patch antenna unit and packaging antenna structure |
| US11367943B2 (en) | 2019-01-31 | 2022-06-21 | Spreadtrum Communications (Shanghai) Co., Ltd. | Patch antenna unit and antenna in package structure |
| CN111725625A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
| CN111725625B (en) * | 2020-05-13 | 2021-06-25 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
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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: 20141231 Termination date: 20150710 |
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| EXPY | Termination of patent right or utility model |