CN206564331U - A kind of novel embedded broadband dual polarized antenna - Google Patents
A kind of novel embedded broadband dual polarized antenna Download PDFInfo
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- CN206564331U CN206564331U CN201720029018.3U CN201720029018U CN206564331U CN 206564331 U CN206564331 U CN 206564331U CN 201720029018 U CN201720029018 U CN 201720029018U CN 206564331 U CN206564331 U CN 206564331U
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- gap
- microstrip line
- scopes
- dual polarized
- medium substrate
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Abstract
The utility model discloses a kind of novel embedded broadband dual polarized antenna, two layer medium substrate, the metallic cavity structure for etching double " work " shape gap radiation structures in two layer medium substrate median surface, being connected with gap radiation structure below microstrip line, two feeding coaxial lines and the medium substrate of two terminal short circuit metal posts short circuits are included.The impedance relative bandwidth of the utility model antenna is more than 41%, and the isolation of two ports is more than 30dB, and antenna pattern is stable, simple in construction, is easily worked, has good application prospect in wireless communication field and embedded conformal antenna field.
Description
Technical field
The utility model is related to radio antenna technology, more particularly to a kind of novel embedded broadband dual polarized antenna.
Background technology
With the development of the communication technology, radio communication has been an essential part, different channel radios in life
Letter system working frequency range is also not quite similar, the need for broad-band antenna can meet people for high-speed communication.
Dual polarized antenna can receive or launch two mutually orthogonal electromagnetic waves of polarization simultaneously, so as to improve nothing
The message data rate of line communication system, while effectively suppressing due to signal Express weakness caused by multipath transmisstion effect, is carried
High communication quality.
Slot antenna is a kind of antenna to be formed of being slotted in metal surface, and cavity backed slot antenna is placed below gap
One metallic cavity, to realize the suppression to carrying on the back cavity direction electromagenetic wave radiation, reaches the function of directed radiation；Back cavity type gap day
Line is widely used in aircraft surface, metal object surface etc., it is easy to be fabricated to flush type antenna, with aircraft surface, metal
Realize conformal in surface.But under existing technical background, back cavity type dual polarization slot antenna is difficult while having broadband, high isolation concurrently
With stable radiance, so becoming the bottleneck of cavity backed slot antenna, the practical of cavity backed slot antenna is hindered.
Utility model content
Main purpose of the present utility model is to overcome the shortcoming and deficiency of prior art, and there is provided a kind of novel embedded width
Band dual polarized antenna, it is possible to achieve high broadband, high isolation and stable radiance.
In order to achieve the above object, the utility model uses following technical scheme：It is a kind of novel embedded wideband dual polarized
Antenna, comprising the first medium substrate positioned at upper strata, the second medium substrate positioned at lower floor, is etched in the middle of two layer medium substrate
Gap radiation structure, the first microstrip line positioned at first medium surface, second below second medium substrate micro-
The first metallic vias with line, positioned at the first microstrip line end and gap radiation structure short circuit, positioned at the second microstrip line end with
The second metallic vias, the first feeding coaxial lines, the second feeding coaxial lines and the first medium substrate of gap radiation structure short circuit
The metallic cavity structure that lower section is connected with gap radiation structure.Wherein described gap radiation structure is by two I-shaped gaps
Crossed-symmetrical is placed, and using the symmetrical centre of gap radiation structure as origin, and uses metal in the intermediate gap along X-axis and Y-axis
Covered, covering metal is cut off in ± 45 ° of directions in central point, four intersecting drift angles of gap are respectively along+45 ° of sides
To or -45 ° of directions utilize metal covering treatment.
As preferred technical scheme, the gap size parameter s1 scopes of described gap radiation structure are 0.4 λ0-2λ0,
Slit width s2, s3 scope are 0.01 λ0-0.3λ0, middle cover width s4 scopes are 0.01 λ0-0.3λ0, cover metal center phase
It is 0.01 λ away from s5 scopes0-0.1λ0, center corner cut width s6 scopes are 0.001 λ0-0.05λ0, intersecting four drift angles covering is wide
S7 scopes are 0.001 λ0-0.05λ0；Wherein λ0For the corresponding free space wavelength in center of antenna resonant frequency place.
As preferred technical scheme, the terminal of two described microstrip lines is short-circuit using short circuit metal post, wherein first
Microstrip line is located in X-axis, and the second microstrip line is located in Y-axis, and the size of two microstrip lines is the same, using two sections of plane " convex " shape
Cable architecture is changed in impedance matching；Dimension of microstrip line parameter is respectively：First segment micro-strip line width f1 scopes are 0.02 λ0-0.2λ0, the
Two section micro-strip line width f2 scopes are 0.005 λ0-0.2λ0, first segment micro-strip line length f3 scopes are 0.1 λ0-0.6λ0, second section micro-strip
Line length f4 scopes are 0.1 λ0-0.6λ0。
As preferred technical scheme, first microstrip line and the first metallic vias collectively constitute the first coaxial feeder with
Impedance matching circuit between antenna；Second microstrip line and the second metallic vias collectively constitute the second coaxial feeder and antenna
Between impedance matching circuit.
As preferred technical scheme, the internal and external conductor of first feeding coaxial lines connects the first microstrip line and gap respectively
Irradiation structure is fed to gap, forms vertical polarization electromagnetic wave；The internal and external conductor difference seam of second feeding coaxial lines
Gap irradiation structure and the second microstrip line are fed to gap, form horizontally-polarized electromagnetic wave；First feeding coaxial lines and
Two feeding coaxial lines are drawn from the hole below metallic cavity respectively, are connected to SMA heads.
As preferred technical scheme, the metallic cavity structure is made up of metallic plate, and the length of metallic plate is c1, width
It is highly c2 for c1, wherein c1 scope is 0.5 λ0-2λ0, height c2 scopes are 0.1 λ0-1λ0, the thickness G c scopes of metallic plate
For 0.1mm-10mm；Wherein metallic cavity structure lower surface opens the first perforate and the second perforate below coaxial line, to draw
Coaxial line, opening diameter is more than the coaxial linear diameter in 50 Europe used.
The utility model compared with prior art, has the following advantages that and beneficial effect：
Being easily worked for novel embedded broadband dual polarized antenna of the present utility model, it is simple in construction, it is adaptable to infinitely great
Metal surface, antenna impedance relative bandwidth is more than 41%, and two interport isolations are higher than 30dB, and antenna pattern keeps stable,
There is good application prospect in wireless communication field and embedded conformal antenna field.
Brief description of the drawings
Fig. 1 is novel embedded broadband dual polarized antenna stereogram of the present utility model；
Fig. 2 is the top view of novel embedded broadband dual polarized antenna of the present utility model；
Fig. 3 is the side view of novel embedded broadband dual polarized antenna of the present utility model；
Fig. 4 is the top view of first, second microstrip line of novel embedded broadband dual polarized antenna of the present utility model；
Fig. 5 is the stereogram of the metallic cavity structure of novel embedded broadband dual polarized antenna of the present utility model；
Fig. 6 is impedance and the isolation frequency characteristic figure of novel embedded broadband dual polarized antenna of the present utility model；
Fig. 7 is that XOZ of the novel embedded broadband dual polarized antenna Single port of the present utility model at frequency 2.14GHz is put down
The antenna pattern in face；
Fig. 8 is that YOZ of the novel embedded broadband dual polarized antenna Single port of the present utility model at frequency 2.14GHz is put down
The antenna pattern in face.
Drawing reference numeral explanation：1st, first medium substrate；2nd, second medium substrate；3rd, gap radiation structure；4a, the first micro-strip
Line；4b, the second microstrip line；5a, the first metallic vias；5b, the second metallic vias；6a, the first feeding coaxial lines；6b, the second feedback
Electric coaxial line；7th, metallic cavity structure；7a, the first perforate；7b, the second perforate.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model
Mode not limited to this.
Embodiment
Structure of the present utility model is by using two-layered medium plate, two microstrip feed lines, double I-shaped gap structures
And cavity body structure is combined, propose that a kind of working band is wide, interport isolation is high, it is simple in construction, be easy to make what is realized
Novel embedded broadband dual polarized antenna.
As shown in figure 1, the present embodiment includes first medium substrate 1, the second medium substrate positioned at lower floor positioned at upper strata
2nd, etch gap radiation structure 3 in the middle of two layer medium substrate, the first microstrip line 4a positioned at the top of first medium substrate 1,
The second microstrip line 4b positioned at the lower section of second medium substrate 2, positioned at the first microstrip line 4a ends and the short circuit of gap radiation structure 3
First metallic vias 5a, the second metallic vias 5b positioned at the second microstrip line 4b ends and the short circuit of gap radiation structure 3, the first feedback
The metallic cavity that electric coaxial line 6a, the second feeding coaxial lines 6b and the lower section of first medium substrate 1 are connected with gap radiation structure
Structure 7.
It is gap radiation structure 3 as shown in Figure 2, is placed by two I-shaped gap crossed-symmetricals, with gap spoke
The symmetrical centre for penetrating structure 3 is origin, and is covered in the intermediate gap along X-axis and Y-axis with metal, in central point to covering
Lid metal is cut off in ± 45 ° of directions, and four intersecting drift angles of gap utilize gold along+45 ° of directions or -45 ° of directions respectively
Belong to covering treatment.
As shown in Fig. 2 the dimensional parameters s1 scopes of gap structure 3 are 0.4 λ0-2λ0, slit width s2, s3 scope are 0.01 λ0-
0.3λ0, middle cover width s4 scopes are 0.01 λ0-0.3λ0, covering metal center is 0.01 λ at a distance of s5 scopes0-0.1λ0, in
Anxious angular breadth s6 scopes are 0.001 λ0-0.05λ0, it is 0.001 λ that four intersecting drift angles, which cover wide s7 scopes,0-0.05λ0；Its
Middle λ0For the corresponding free space wavelength in center of antenna resonant frequency place.
As shown in Figure 4, the first microstrip line 4a is located in X-axis, and the second microstrip line 4b is located in Y-axis, passes through two micro-strips
The terminal short circuit of line is fed to gap irradiation structure 3, and dimension of microstrip line parameter f1 scopes are 0.02 λ0-0.2λ0, f2 scopes
For 0.005 λ0-0.2λ0, f3 scopes are 0.1 λ0-0.6λ0, f4 scopes are 0.1 λ0-0.6λ0。
As shown in Figure 3, medium substrate 1 is above, and size is more than metallic cavity 7, and antenna is not affected to infinity
Circuit parameter；Medium substrate 2 is located at the lower section of medium substrate 1 and adjacent medium substrate 1, and size is equal with metallic cavity 7, medium
The relative dielectric constant scope of substrate 1 and medium substrate 2 is 1-20, and thickness Ht scopes are 0.003 λ0-0.05λ0。
It is the stereogram of metallic cavity structure 7 as shown in Figure 5, metallic cavity structure is made up of metallic plate, metallic plate
Thickness G c scopes are 0.1mm-10mm；The metallic cavity structure 7 be located at the lower section of medium substrate 1 and with gap radiation structure phase
Even, its grow and it is a width of be all c1, c1 scope is 0.5 λ0-2λ0, height c2 scopes are 0.1 λ0-1λ0；The metallic cavity structure
7 lower surfaces open the first perforate 7a and the second perforate 7b to draw coaxial line below coaxial line, and opening diameter is more than used 50
The coaxial linear diameter in Europe.
Accompanying drawing 6 is compareed, accompanying drawing 6 is given when first medium substrate 1, second medium substrate 2 according to relative dielectric constant are
2.2nd, thickness is 1.52mm；The size s1 of gap radiation structure 3 is 0.74 λ0, s2 be 0.05 λ0, s3 be 0.07 λ0, s4 be 0.033
λ0, s5 be 0.025 λ0, s6 be 0.0086 λ0, s7 be 0.0086 λ0.Dimension of microstrip line f1 is 0.033 λ0, f2 be 0.007 λ0, f3 be
0.307λ0, f4 be 0.243 λ0.The reflectance factor and isolation frequency characteristic of the antenna calculated by HFSS simulation softwares.
It is visible according to Fig. 7 result, novel embedded broadband dual polarized antenna return loss when working band is 1.7GHz-2.6GHz
Up to -15dB, it is more than 41% with respect to working band width, isolation is more than 30dB, the working characteristics with broadband and high-isolation.
Accompanying drawing 7,8 is compareed, accompanying drawing 7,8 is given when the area of first medium substrate 1 is 1.07 λ0×1.07λ0, second medium
The area of substrate 2 is 0.94 λ0×0.94λ0, metallic cavity structure height h3 be 0.24 λ0When, utilize HFSS Software simulation calculations
Obtained antenna is when working frequency is 2.14GHz, and antenna is in XOZ and YOZ faces gain pattern.From accompanying drawing 7,8, antenna
With good radiation characteristic.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, are included within protection domain of the present utility model.
Claims (7)
1. a kind of novel embedded broadband dual polarized antenna, it is characterised in that：Comprising the first medium substrate (1) positioned at upper strata,
Second medium substrate (2) positioned at lower floor, etch gap radiation structure (3) in the middle of two layer medium substrate, be situated between positioned at first
The first microstrip line (4a) above matter substrate (1), the second microstrip line (4b) below second medium substrate (2), positioned at
One microstrip line (4a) end is with first metallic vias (5a) of gap radiation structure (3) short circuit, positioned at the second microstrip line (4b) end
End and second metallic vias (5b) of gap radiation structure (3) short circuit, the first feeding coaxial lines (6a), the second feeding coaxial lines
The metallic cavity structure (7) being connected below (6b) and first medium substrate (1) with gap radiation structure；Wherein, described seam
Gap irradiation structure (3) is placed by two I-shaped gap crossed-symmetricals, using the symmetrical centre of gap radiation structure (3) as original
Point, and covered in the intermediate gap along X-axis and Y-axis with metal, covering metal is carried out in ± 45 ° of directions in central point
Excision, four intersecting drift angles of gap are covered with metal in+45 ° of directions or -45 ° of directions respectively.
2. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：The gap radiation structure
(3) gap size parameter s1 scopes are 0.4 λ0-2λ0, slit width s2, s3 scope are 0.01 λ0-0.3λ0, middle cover width
S4 scopes are 0.01 λ0-0.3λ0, covering metal center is 0.01 λ at a distance of s5 scopes0-0.1λ0, center corner cut width s6 scopes are
0.001λ0-0.05λ0, it is 0.001 λ that four intersecting drift angles, which cover wide s7 scopes,0-0.05λ0；Wherein λ0It is humorous for the center of antenna
The corresponding free space wavelength in vibration frequency place.
3. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：The first described microstrip line
The terminal of (4a), the second microstrip line (4b) is using the short circuit of short circuit metal post, wherein the first microstrip line (4a) is located in X-axis, second
Microstrip line (4b) is located in Y-axis, and the size of two microstrip lines is the same, uses the two section impedance matching conversions of plane " convex " shape
Cable architecture；Wherein, dimension of microstrip line parameter is respectively：First segment micro-strip line width f1 scopes are 0.02 λ0-0.2λ0, second section micro-strip
Line width f2 scopes are 0.005 λ0-0.2λ0, first segment micro-strip line length f3 scopes are 0.1 λ0-0.6λ0, second section micro-strip line length f4 models
Enclose for 0.1 λ0-0.6λ0。
4. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：First microstrip line
(4a) and the first metallic vias (5a) collectively constitute impedance matching circuit of the first feeding coaxial lines (6a) between antenna；It is described
Second microstrip line (4b) and the second metallic vias (5b) collectively constitute impedance of the second feeding coaxial lines (6b) between antenna
With circuit.
5. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：First feed is coaxial
The internal and external conductor of line (6a) connects the first microstrip line (4a) and gap radiation structure (3) to feed gap respectively, is formed and hung down
Straight polarized electromagnetic wave；The internal and external conductor of second feeding coaxial lines (6b) connects the second microstrip line (4b) and gap radiation structure respectively
(3) gap is fed, forms horizontally-polarized electromagnetic wave；First feeding coaxial lines (6a) and the second feeding coaxial lines (6b)
Drawn respectively from the hole below metallic cavity structure (7), be connected to SMA heads.
6. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：The metallic cavity structure
(7) it is made up of metallic plate, the length of metallic plate is c1, and width is c1, is highly c2, wherein c1 scope is 0.5 λ0-2λ0, it is high
It is 0.1 λ to spend c2 scopes0-1λ0, the thickness G c scopes of metallic plate are 0.1mm-10mm.
7. novel embedded broadband dual polarized antenna according to claim 1, it is characterised in that：The metallic cavity structure
(7) lower surface opens the first perforate (7a) and the second perforate (7b) below coaxial line, to draw coaxial line, the first perforate (7a)
It is more than the coaxial linear diameter in 50 Europe used with the diameter of the second perforate (7b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029018.3U CN206564331U (en) | 2017-01-10 | 2017-01-10 | A kind of novel embedded broadband dual polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720029018.3U CN206564331U (en) | 2017-01-10 | 2017-01-10 | A kind of novel embedded broadband dual polarized antenna |
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| Publication Number | Publication Date |
|---|---|
| CN206564331U true CN206564331U (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720029018.3U Expired - Fee Related CN206564331U (en) | 2017-01-10 | 2017-01-10 | A kind of novel embedded broadband dual polarized antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785404A (en) * | 2017-01-10 | 2017-05-31 | 华南理工大学 | A kind of novel embedded broadband dual polarized antenna |
| CN109873249A (en) * | 2017-12-04 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of micro-strip navigation antenna with air back chamber |
| CN110391503A (en) * | 2019-08-16 | 2019-10-29 | 深圳市蔚来射频技术有限公司 | Dual-polarization radiating unit, small separation array antennas |
-
2017
- 2017-01-10 CN CN201720029018.3U patent/CN206564331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785404A (en) * | 2017-01-10 | 2017-05-31 | 华南理工大学 | A kind of novel embedded broadband dual polarized antenna |
| CN106785404B (en) * | 2017-01-10 | 2023-08-22 | 华南理工大学 | Novel embedded broadband dual polarized antenna |
| CN109873249A (en) * | 2017-12-04 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of micro-strip navigation antenna with air back chamber |
| CN110391503A (en) * | 2019-08-16 | 2019-10-29 | 深圳市蔚来射频技术有限公司 | Dual-polarization radiating unit, small separation array antennas |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20200110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |