CN109560388A - Millimeter wave broadband circular polarized antenna based on substrate integration wave-guide loudspeaker - Google Patents
Millimeter wave broadband circular polarized antenna based on substrate integration wave-guide loudspeaker Download PDFInfo
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- CN109560388A CN109560388A CN201811568199.2A CN201811568199A CN109560388A CN 109560388 A CN109560388 A CN 109560388A CN 201811568199 A CN201811568199 A CN 201811568199A CN 109560388 A CN109560388 A CN 109560388A
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- metal layer
- dielectric
- slab
- polarization converter
- medium block
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0241—Waveguide horns radiating a circularly polarised wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of millimeter wave broadband circular polarized antennas based on substrate integration wave-guide loudspeaker, for solving the problems, such as that existing substrate integration wave-guide electromagnetic horn is difficult to realize broadband circle polarized work.It includes dielectric-slab (1), upper metal layer (3), lower metal layer (4), upper medium block (5), lower medium block (6), polarization converter (7) and polarization converter support construction (8)；Upper and lower metal layer is located at the upper and lower surface of dielectric-slab；The plated-through hole array (2) of spacing gradual change is provided on dielectric-slab to constitute feed and horn structure；Upper and lower medium block is respectively arranged at the upper and lower of loudspeaker radiation bore, to realize wideband impedance match；Polarization converter and its support construction are located at the edge of loudspeaker radiation bore, to realize stable broadband circle polarized radiation.The present invention has the advantages that circular polarization radiation is stablized in broadband under millimeter wave frequency band, suitable for broadband millimeter-wave wireless telecommunication system.
Description
Technical field
The invention belongs to antenna technical field, in particular to a kind of millimeter wave broadband circular polarized antenna can be applied to move
Satellite communication and 5G wireless telecommunication system.
Background technique
Circular polarized antenna is in the application such as satellite communication, remote sensing and deep space exploration, due to can avoid multipath effect, polarization
The characteristics of mismatch and Faraday rotation effect, thus be widely used.And broad-band antenna is due to that can reduce system complexity
And it promotes traffic capacity and is widely studied and applies.However, traditional Broadband circularly polarized antenna often has biggish size
And nonplanar structure, it is difficult to integrated with planar circuit；Which limits it in many high integration wireless telecommunication systems
Application.In order to solve this problem, substrate integrated waveguide technology is widely used in the design of highly integrated circuit and system
In.
Substrate integration wave-guide is by the Wu Ke professor of Montreal, CAN university formal proposition in 2001.Substrate is integrated
Waveguide can satisfy in the demand of microwave system and microwave device integration and miniaturization, while have traditional rectangular waveguide similar
Transmission characteristic.The shortcomings that traditional rectangular waveguide can be overcome using the antenna that substrate integrated waveguide technology is fed, has low section
It is easy to the advantage integrated with planar circuit, and can use traditional PCB design technology and be integrated in antenna and microwave circuit together
In one piece of dielectric substrate, design and low production cost.
It is logical that substrate integration wave-guide electromagnetic horn is widely used in millimeter wave because of its low Section Design the processing is simple the characteristics of
In news system.But traditional integrated waveguide electromagnetic horn coupling bandwidth is relatively narrow, and is linearly polarized radiation.To widen it
Gradual change or loading structure can be introduced with bandwidth, but these structures often process with high-volume by the more complicated low cost that is unfavorable for,
And also it is unfavorable for realizing broadband circle polarized radiation.Substrate may be implemented by a group battle array, more feedbacks and multi-layer thick dielectric-slab structure
The circular polarization radiation of integrated waveguide antenna, but the circular polarisation bandwidth of operation realized is often relatively narrow, structure is more complex, and most of
It is broadside antenna, limits its application in broadband wireless communications.So how to guarantee substrate integration wave-guide loudspeaker day
Under the premise of line width band is matched, realize its broadband end-fire circular polarization radiation to millimeter wave wireless telecommunication system important in inhibiting.
Summary of the invention
It is an object of the invention to be difficult to realize broadband circle polarized radiation for above-mentioned traditional integrated waveguide electromagnetic horn
Deficiency proposes a kind of millimeter wave broadband circular polarized antenna based on substrate integration wave-guide loudspeaker, before realizing Broadband Matching
It puts and improves end-fire circular polarization radiation bandwidth.
In order to achieve the above object, the present invention includes: the metal on this including dielectric-slab 1, upper metal layer 3 and lower metal layer 4
Layer 3 and lower metal layer 4 are located at the upper and lower surface of dielectric-slab 1, and the plated-through hole array 2 of gradual change is provided on dielectric-slab 1；
The plated-through hole array 2 collectively forms substrate collection with them through between dielectric-slab 1, upper metal layer 3, lower metal layer 4
At waveguide feed and horn structure, it is characterised in that:
Medium block 5 is placed with above the radiation edge of upper metal layer 3；
Lower medium block 6 is placed with below the radiation edge of lower metal layer 4；
The polarization converter 7 and polarization converter support knot of stagger cycle arrangement are equipped on the outside of the radiation edge of dielectric-slab 1
Structure 8.
Preferably, upper metal layer 3 is identical with the shape and size of lower metal layer 4.
Preferably, the plated-through hole array 2 of spacing gradual change, at its spacing self feeding port at radiating aperture gradually
Increase, to obtain good impedance matching.
Preferably, the left-half of upper medium block 5 is in contact with dielectric-slab 1, right half part connects with upper metal layer 3
Touching.
Preferably, the left-half of lower medium block 6 is in contact with dielectric-slab 1, right half part connects with lower metal layer 4
Touching.
Preferably, polarization converter 7 is made of the medium strip that dielectric constant is higher than air, thickness h 3 is 0.1-20mm.
Preferably, polarization converter support construction 8 is made of dielectric constant and rigid foam similar in air, thickness h 4
For 0.1-20mm.
Preferably, horizontal plane where polarization converter 7 and polarization converter support construction 8 and dielectric-slab 1 in 45 ° ±
30 ° of tilt angles.
Preferably, the top half of polarization converter 7 is in contact with upper medium block 5, lower half portion and lower 6 phase of medium block
Contact, central part and 1 radiating aperture side edge of dielectric-slab are touched,
Compared with the prior art, the invention has the following advantages:
1) present invention makes antenna have smaller damage in millimeter wave frequency band due to using feeding substrate integrated waveguide structure
Consumption, and it is easy to process and integrated with other planar circuits.
2) present invention places medium block in dielectric-slab edge upper and lower due to using to improve at aerial radiation bore
Impedance transition mechanism, so that the impedance matching bandwidth of antenna is obviously improved.
3) antenna may be implemented surely as polarization converter in medium strip of the present invention due to using high dielectric constant
Fixed broadband circle polarized radiation, and antenna overall structure is simple, compact.
4) present invention is due to using support of the foamed material that is close with air of dielectric constant as polarization converter
Structure, so that antenna compact overall structure and performance stabilization.
5) present invention realizes the bandwidth match and circular polarization radiation of antenna due to using prefect dielectric structure, so that the day
Line under the premise of not influencing its Broadband Matching while can realize stable broadband circle polarized radiation.
Detailed description of the invention
Fig. 1 is overall structure perspective diagram of the invention；
Fig. 2 is schematic side view of the invention；
Fig. 3 is the schematic top plan view of Fig. 1；
Fig. 4 is VSWR parameters simulation curve graph of the invention；
Fig. 5 is axis of the invention than parameters simulation curve graph；
Fig. 6 is the face x-z and y-z plane simulated gain directional diagram of the invention.
Specific embodiment
Structure and effect of the invention are described in further detail in the following with reference to the drawings and specific embodiments.
This example is to work in 22-31GHz frequency range, i.e., for the antenna of 5G millimeter wave frequency band
Referring to Fig.1, this example includes dielectric-slab 1, plated-through hole array 2, upper metal layer 3, lower metal layer 4, upper medium
Block 5, lower medium block 6, polarization converter 7 and polarization converter support construction 8.Wherein:
Upper metal layer 3 and lower metal layer 4 are separately positioned on the upper and lower surfaces of dielectric-slab 1, and structure having the same
And shape.This example uses but is not limited to the shape of metal layer 3 and lower metal layer 4 as rectangle.Metal layer 3 and lower metal on this
Layer 4 coincides in feed port side and dielectric-slab 1.Dielectric-slab 1 stretches out in metal layer 3 and lower metal layer 4 at radiating aperture end.
Plated-through hole array 2, gradual change through between upper metal layer 3, dielectric-slab 1 and lower metal layer 4, and and they
Collectively form feeding substrate integrated waveguide and horn structure.The plated-through hole array 2 has in feed end between uniform array
Away to realize feeding substrate integrated waveguide.At the spacing self feeding port of the plated-through hole array 2 at radiating aperture gradually
Increase, to form horn-like irradiation structure.
Upper medium block 5 and lower medium block 6 are located at the top of 4 radiating aperture edge of metal layer 3 and lower metal layer
And lower section, to realize the Broadband Matching of antenna.Medium block 5 and the structure having the same of lower medium block 6 and shape on this, and the left side
A part and dielectric-slab 1 are in contact.5 the right a part of medium block is in contact with upper metal layer 3 on this；Lower 6 the right one of medium block
Part is in contact with lower metal layer 4, this example uses but be not limited to the shape of medium block 5 and lower medium block 6 as rectangle.
Polarization converter 7 and polarization converter support construction 8, period-interleaving arrangement, positioned at the radiating aperture of dielectric-slab 1
Edge, to realize broadband circle polarized radiation.The polarization converter 7 and polarization converter support construction 8 are at radiating aperture edge
Place is in contact with dielectric-slab 1, upper medium block 5 and lower medium block 6.The polarization converter 7 and polarization converter support construction 8 and Jie
1 place horizontal plane of scutum is in 45 ° of ± 30 ° of tilt angles, this example uses but is not limited to inclination angle as 45 °.The polarization converter 7
It should ensure that the radiating aperture of covering electromagnetic horn enough is good to realize with composite construction composed by polarization converter support construction 8
Good circular polarization radiation.
Referring to Fig. 2 and Fig. 3, the long side of the dielectric-slab 1 is that L1 short side is W1, uses in the present embodiment but is not limited to L1=
54mm, W1=38mm.Dielectric-slab 1 uses but is not limited to dielectric constant as 3 F4B material, with a thickness of h, the present embodiment use but
It is not limited to, h=2mm.It is W1 that the upper metal layer 3 and 4 long side of lower metal layer, which are L2 short side, uses but is not limited in the present embodiment
L2=51mm.
The metal throuth hole array 2, including but not limited to 56 circular holes and 2 transition through-holes, the transition through-hole is close to Jie
1 feed port side of scutum, is formed by connecting by a half-round cross hole and a rectangular through-hole, wherein the diameter and circle of half-round cross hole
Bore dia is identical, is d1, and the long side of rectangular through-hole is W4, and short side d1, the distance between through-hole is d2；The metal throuth hole battle array
Column 2 have uniform two sides through-hole array spacing W2 at feed port, and uniform parts length is L5；The metal throuth hole array 2
Through-hole array spacing in two sides is W3, i.e. the spacing self feeding port of 2 two sides through-hole array of metal throuth hole array at radiating aperture
Place incrementally increases W3 by W2, and the transition length is L4 at radiating aperture.It is public according to the realization of substrate integration wave-guide
Available d2/d1 < 2 of formula, the present embodiment use but are not limited to d1=1.1mm, d2=1.8mm；The long side of the rectangular through-hole
W4 value range is 1~5mm, uses in the present embodiment but is not limited to W4=1.2mm；Between the metal throuth hole array uniform parts
It should ensure that substrate integration wave-guide work in TE away from W210Mode uses in the present embodiment but is not limited to W2=5.5mm.To obtain most
Big antenna gain, according to formulaIn relationship, come determine substrate integration wave-guide loudspeaker corresponding size close
System, wherein λ by wavelength in calculating frequency free space, use but be not limited to W3=31mm, L4=44mm in the present embodiment.
The short side of the upper medium block 5 and lower medium block 6 is L3, and long side is W1, uses but to be not limited to dielectric normal
The F4B material that number is 3, thickness is h1.The value range of L3 is 0.5~100mm, and the present embodiment takes L3=5mm；The value of h1
Range is 0.5~10mm, and the present embodiment takes h1=2mm.
The polarization converter 7 by width be W5, dielectric constant be greater than air medium strip form, the present embodiment use but
It is not limited to use dielectric constant for 9.2, with a thickness of the medium strip of h3=0.8mm；Polarization converter support construction 8 is by width
The rigid foam item of W5, dielectric constant close to air form, this example is used but is not limited to using dielectric constant as 1.1, thickness
Degree is h4=0.8mm rigid foam item.The length of the polarization converter 7 is L6, and the length of polarization converter support construction 8 is
L7.The length of the polarization converter support construction should ensure that it is enough to connect and support spaced polarization converter medium
Item uses in the present embodiment but is not limited to L7=4mm.The polarization converter 7 is answered with what polarization converter support construction 8 was constituted
Close a length of L8 of structure, width W6, with a thickness of W5.L6, L8 and W6 should ensure that covering aerial radiation bore enough, good to realize
Circular polarisation conversion function uses but is not limited to L6=25mm, L8=50mm, W6=18mm in the present embodiment.W5 is by not same polarization
Polarization converter effective dielectric constant and required phase difference calculating obtain under condition of incidence.It in this example, is realization
Circular polarization radiation, which should be 90 °, therefore this example uses but is not limited to W5=3mm.
Advantages of the present invention can be further illustrated by following emulation:
Emulation 1: the electricity using business simulation software ANSYS HFSS v15.0 to examples detailed above within the scope of 20-32GHz
Standing-wave ratio VSWR parameter is pressed to carry out simulation calculation, as a result as shown in Figure 4.
As seen from Figure 4, inventive antenna can work in 22-32GHz range, its VSWR is respectively less than 2 in the range, and
Opposite bandwidth of operation is 37%.
Emulation 2: the axis using business simulation software ANSYS HFSS v15.0 to examples detailed above within the scope of 20-32GHz
Simulation calculation is carried out than parameter, as a result as shown in Figure 5.
From figure 5 it can be seen that inventive antenna is respectively less than 3dB in 22-31GHz range inner shaft ratio, good entelechy may be implemented
Change radiation, circular polarisation is 34% with respect to bandwidth of operation.
Emulation 3: using business simulation software ANSYS HFSS v15.0 to above-described embodiment antenna in 24GHz, 27GHz and
Antenna pattern at 30GHz carries out simulation calculation, as a result such as Fig. 6, in which:
Fig. 6 (a) is the antenna pattern in x-z face and y-z plane of the present embodiment in 24GHz
Fig. 6 (b) is the antenna pattern in x-z face and y-z plane of the present embodiment in 27GHz
Fig. 6 (c) is the antenna pattern in x-z face and y-z plane of the present embodiment in 30GHz
As seen from Figure 6, inventive antenna greatest irradiation direction is maintained at z-axis direction in broadband, and with where dielectric-slab
Plane is parallel, belongs to end-on-fire antenna.As can be seen from Figure 6, the greatest irradiation direction gain of this example is 8dB, the face x-z and y-z
Surface radiation directional diagram is symmetrical, and has stable beam angle and pattern shapes.
The above simulation result explanation, inventive antenna can realize broadband stabilized end under the premise of guaranteeing Broadband Matching
Penetrate circular polarization radiation.
Above description is only a preferred embodiment of the invention, does not constitute any limitation of the invention, it is clear that for this
For the professional in field, after having understood the content of present invention and design principle, all may based on the principle of the present invention and
In the case where structure, carry out in form and the various modifications and variations in details, such as changing to the various parameters of antenna structure
Become.But these modifications and variations based on inventive concept are still within scope of protection of the claims of the invention.
Claims (9)
1. a kind of millimeter wave broadband circular polarized antenna based on substrate integration wave-guide loudspeaker, including dielectric-slab (1), upper metal layer
(3) and lower metal layer (4), metal layer (3) and lower metal layer (4) are located at the upper and lower surface of dielectric-slab (1), dielectric-slab on this
(1) the plated-through hole array (2) of gradual change is provided on；The plated-through hole array (2) is through dielectric-slab (1), upper metal
Between layer (3), lower metal layer (4), and feeding substrate integrated waveguide and horn structure are collectively formed with them, it is characterised in that:
Medium block (5) are placed with above the radiation edge of upper metal layer (3)；
Lower medium block (6) are placed with below the radiation edge of lower metal layer (4)；
The polarization converter (7) and polarization converter support knot of stagger cycle arrangement are equipped on the outside of the radiation edge of dielectric-slab (1)
Structure (8).
2. antenna according to claim 1, which is characterized in that the shape and size of upper metal layer (3) and lower metal layer (4)
It is identical.
3. antenna according to claim 1, which is characterized in that the plated-through hole array (2) of spacing gradual change, its spacing is certainly
To being gradually increased at radiating aperture at feed port, to obtain good impedance matching.
4. antenna according to claim 1, which is characterized in that the left-half of upper medium block (5) connects with dielectric-slab (1)
Touching, right half part are in contact with upper metal layer (3).
5. antenna according to claim 1, which is characterized in that the left-half of lower medium block (6) connects with dielectric-slab (1)
Touching, right half part are in contact with lower metal layer (4).
6. antenna according to claim 1, which is characterized in that polarization converter (7) is higher than Jie of air by dielectric constant
Matter item composition, thickness h 3 are 0.1-20mm.
7. antenna according to claim 1, which is characterized in that polarization converter support construction (8) is by dielectric constant and sky
The composition of rigid foam similar in gas, thickness h 4 are 0.1-20mm.
8. antenna according to claim 1, which is characterized in that polarization converter (7) and polarization converter support construction (8)
It is in 45 ° of ± 30 ° of tilt angles with the horizontal plane where dielectric-slab (1).
9. antenna according to claim 1, which is characterized in that the top half of polarization converter (7) and upper medium block (5)
It is in contact, lower half portion is in contact with lower medium block (6), and central part and dielectric-slab (1) radiating aperture side edge are touched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568199.2A CN109560388B (en) | 2018-12-21 | 2018-12-21 | Millimeter wave broadband circularly polarized antenna based on substrate integrated waveguide horn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568199.2A CN109560388B (en) | 2018-12-21 | 2018-12-21 | Millimeter wave broadband circularly polarized antenna based on substrate integrated waveguide horn |
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| CN109560388A true CN109560388A (en) | 2019-04-02 |
| CN109560388B CN109560388B (en) | 2020-11-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110854526A (en) * | 2019-10-23 | 2020-02-28 | 南通大学 | Substrate integrated waveguide feed medium end-fire antenna |
| CN112563724A (en) * | 2020-12-04 | 2021-03-26 | 西安电子科技大学 | Low-profile half-mode substrate integrated waveguide filter antenna with high frequency selectivity |
| CN115313039A (en) * | 2022-10-11 | 2022-11-08 | 成都瑞迪威科技有限公司 | Broadband slant polarization array antenna |
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| CN112563724A (en) * | 2020-12-04 | 2021-03-26 | 西安电子科技大学 | Low-profile half-mode substrate integrated waveguide filter antenna with high frequency selectivity |
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