CN109742546A - A kind of dual polarized antenna of planar monopole and gap structure - Google Patents
A kind of dual polarized antenna of planar monopole and gap structure Download PDFInfo
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- CN109742546A CN109742546A CN201910083077.2A CN201910083077A CN109742546A CN 109742546 A CN109742546 A CN 109742546A CN 201910083077 A CN201910083077 A CN 201910083077A CN 109742546 A CN109742546 A CN 109742546A
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- monopole
- dual polarized
- medium substrate
- gap
- antenna
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Abstract
The invention discloses the dual polarized antennas of a kind of planar monopole and gap structure, and monopole radiating doublet is respectively set by the upper and lower surface in medium substrate and plane single pole sub antenna unit is collectively formed in metal floor；Slot antenna element is formed by opening up gap on metal floor；And the feed port being arranged in medium substrate by metallic connection parts and two forms feed structure unit to be electrically connected to monopole radiating doublet and metal floor；To by different feeding modes, realize two kinds of different line polarization waves in same frequency using the characteristic of both antenna element polarization orthogonals.In addition, plane single pole sub antenna unit and slot antenna element all have low section, light-weight, easy to process feature, therefore, the dual polarized antenna formed by the two also have simple structure, compact, production easy to process advantage.
Description
Technical field
The present invention relates to a kind of dual polarized antennas, and in particular to a kind of dual polarization day of planar monopole and gap structure
Line.
Background technique
Dual polarized antenna makes aerial radiation go out the polarized wave of different directions by different feeding classifications, is conducive to transmitting
It is middle to realize effective diversity, thus the decline of confrontation communication quality due to caused by multipath fading, it can conduct in mimo systems
Transmitting antenna or receiving antenna.
The opposite radiation polarization purity of existing dual polarized antenna is not high, while the flexibility designed is lower.
Summary of the invention
Goal of the invention: in order to overcome the drawbacks of the prior art, the present invention provides a kind of planar monopole and gap structure
Dual polarized antenna, the antenna structure is simple, has low section, light-weight characteristic, production easy to process, while with higher
Polarization purity and flexible design degree.
Technical solution: a kind of dual polarized antenna of planar monopole and gap structure of the present invention, including medium base
Plate, plane single pole sub antenna unit, slot antenna element and feed structure unit；The medium substrate, which has, to be parallel to each other
Upper and lower surfaces；The plane single pole sub antenna unit includes metal floor and monopole radiating doublet；The metal
Plate is rectangle, and is set to the lower surface of medium substrate；The monopole radiating doublet is elongated, is set to the medium base
The length direction of the upper surface of plate, the strip monopole radiating doublet vertically divides the long side of the rectangle metal floor equally；Institute
State the gap that slot antenna element includes closed at both ends and forms perforation on metal floor thickness direction, the extension side in the gap
It is respectively positioned on the same plane perpendicular to the medium substrate surface to the length direction with monopole radiating doublet；The feed
Structural unit includes metallic connection parts and two feed ports, and the metallic connection parts are set to the one of monopole radiating doublet
End, described two feed ports are connected on two sides in the gap, and the other end of two feed ports hangs down
It directly penetrates through the medium substrate and is connected to the two sides of the metallic connection parts.
Further, in order to improve the matching performance of plane single pole sub antenna unit, the metal floor is set to described
The side of medium substrate lower surface, the monopole radiating doublet are set to the other side of medium substrate upper surface, and metal
Plate and the monopole radiating doublet are formed on the thickness direction of medium substrate to interlock.
Further, which further includes feeder line, described two feed ports respectively with the feed line
Road electrical connection.
Wherein, when the feeder line carries out even mould feed by two feed ports, plane single pole sub antenna unit
It works and gives off vertically polarized wave.
When feeder line carries out odd mould feed by two feed ports, slot antenna element works and gives off level
Polarized wave.
The utility model has the advantages that compared with prior art, monopole is respectively set by the upper and lower surface in medium substrate in the present invention
Plane single pole sub antenna unit is collectively formed in radiating doublet and metal floor；Gap is formed by opening up gap on metal floor
Antenna element；And feed structure unit is formed by the feed port that metallic connection parts and two are arranged in medium substrate and is used
To be electrically connected to monopole radiating doublet and metal floor；To utilize the spy of both antenna element polarization orthogonals
Property, by different feeding modes, realize two kinds of different line polarization waves in same frequency, and polarization with higher is pure
Degree.In addition, plane single pole sub antenna unit and slot antenna element all have low section, light-weight, easy to process feature, because
This, the dual polarized antenna flexible design degree formed by the two is higher, it may have structure is simple, compact, production easy to process
Advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the upper surface of dual polarized antenna of the invention；
Fig. 2 is the enlarged partial isometric view of feed structure unit in Fig. 1；
Fig. 3 is the structural schematic diagram of the lower surface of dual polarized antenna of the invention；
Fig. 4 is the overlooking structure diagram of dual polarized antenna in Fig. 3；
Fig. 5 is the right side structural representation of dual polarized antenna in Fig. 3；
Fig. 6 is the antenna return loss characteristic under the two kinds of feeding modes of even mould and Qi Mo calculated using HFSS software；
Fig. 7 is the main polarization and cross polarization that the lower face xoy, the face xoz, the face yoz are fed using the even mould that HFSS software calculates
Antenna pattern；
Fig. 8 is the main polarization and cross polarization that the lower face xoy, the face xoz, the face yoz are fed using the odd mould that HFSS software calculates
Antenna pattern.
Specific embodiment
In the following, being described in further details in conjunction with attached drawing to the present invention.
As shown in Figs. 1-5, present embodiment discloses the dual polarized antennas of a kind of planar monopole and gap structure, including are situated between
Matter substrate 1, metal floor 2, monopole radiating doublet 3, gap 4, metallic connection parts 5 and two feed ports 6.
Wherein, medium substrate 1 is rectangle structure and has the upper and lower surfaces being parallel to each other, antenna element production
On the medium substrate 1.Orientation shown in Fig. 5 is please referred to, the metal floor 2 of bottom is set on the right side of the lower surface of medium substrate 1,
The monopole radiating doublet 3 of top layer is set on the left of the upper surface of medium substrate 1, and metal floor 2 and monopole radiating doublet 3 are total
With the plane single pole sub antenna unit for forming the dual polarized antenna.
Specifically, metal floor 2 is rectangle structure, the length of long side is about half-wavelength, and the length of short side is about four
/ mono- wavelength.In the present embodiment, a long side of metal floor 2 is concordant with a side of 1 lower surface of medium substrate edge, another
Long side is located at the central region of the lower surface.And preferably, the long side length of metal floor 2 is half-wavelength, bond length
For quarter-wave.
Monopole radiating doublet 3 is the metal band of strip, and length is about quarter-wave.And in the present embodiment
In, the length of the monopole radiating doublet of the strip is preferably quarter-wave.Monopole radiating doublet 3 is from medium substrate
The other side edge of 1 upper surface extends to the middle part of the upper surface, and the long side of its length direction perpendicular bisected metal floor 2.
Gap 4 closed at both ends and that perforation is formed on 2 thickness direction of metal floor, the seam are offered on metal floor 2
The extending direction of gap 4 and the length direction of monopole radiating doublet 3 are respectively positioned on perpendicular to the same flat of 1 surface of medium substrate
On face, by the slot antenna element of the gap 4 as dual polarized antenna.Specifically, the length in gap 4 is preferred in the present embodiment
For a quarter guide wavelength.
Metallic connection parts 5 and two feed ports 6 form feed structure unit.Wherein, two feed ports 6 connect respectively
It connects in the two sides of metallic connection parts 5, and the other end of two feed ports 6 runs through medium substrate 1 and is separately connected positioned at Jie
On two sides in the gap 4 of 1 lower surface of matter substrate.
Referring to Fig. 5, monopole radiating doublet 3 and metal floor 2 form on 1 thickness direction of medium substrate and interlock
Overlapping.That is, the one end for being located at the monopole radiating doublet 3 of upper surface side extends and exceeds the gold positioned at the lower surface other side
One segment length of edge of possession plate 2, is then connected, so as to improve the matching of plane single pole sub antenna unit with metallic connection parts 5
Performance.
In addition, two feed ports 6 and metallic connection parts 5 can change slot antenna relative to the location of gap 4
The self-impedance of unit, to can also improve the matching performance of slot antenna element.
Further, which further includes feeder line, described two feed ports 6 respectively with the feed line
Road electrical connection.Specifically, when the feeder line carries out even mould feed by two feed ports 6, plane single pole sub antenna
Cell operation simultaneously gives off vertically polarized wave.When feeder line carries out odd mould feed by two feed ports 6, slot antenna
Cell operation simultaneously gives off horizontal polarized wave.
As shown in fig. 6, in the present embodiment, medium substrate 1 according to dielectric constant 4.4, with a thickness of 1 millimeter of design when, utilize
Return loss under two kinds of feeding modes of antenna that HFSS software calculates.Under odd mould feeding mode, the working frequency of antenna is
The 2.4GHz, -10dB impedance bandwidth of antenna are 41.7% (1.9GHz-2.9GHz)；Under even mould feeding mode, the work of antenna
Frequency is 2.4GHz, and -10dB the impedance bandwidth of antenna is 35.3% (2.1GHz-3.0GHz).
As shown in fig. 7, planar monopole of the present embodiment and the dual polarized antenna of gap structure, are calculated using HFSS software
Even mould feed under the conditions of the face xoy, the face xoz, the main polarization and cross-polarized radiation direction in the face yoz.Wherein the face xoz and
The cross polarization in the face yoz is lower than -30dB, is not shown on figure.
As shown in figure 8, planar monopole of the present embodiment and the dual polarized antenna of gap structure, are calculated using HFSS software
Odd mould feed under the conditions of the face xoy, the face xoz, the main polarization and cross-polarized radiation direction in the face yoz.Wherein the face xoz and
The cross polarization in the face yoz is lower than -30dB, is not shown on figure.
By above-mentioned test it is found that the dual polarized antenna of planar monopole and gap structure of the invention has same work
The not like-polarized operating mode of two kinds of frequency, and superior performance.
Claims (8)
1. a kind of dual polarized antenna of planar monopole and gap structure, which is characterized in that including medium substrate (1), plane list
Pole sub-antenna unit, slot antenna element and feed structure unit；
The medium substrate (1) has the upper and lower surfaces being parallel to each other；
The plane single pole sub antenna unit includes metal floor (2) and monopole radiating doublet (3)；The metal floor (2)
It is rectangle, is set to the lower surface of medium substrate (1)；The monopole radiating doublet (3) is elongated, is set to and is given an account of
The upper surface of matter substrate (1), the length direction of the strip monopole radiating doublet (3) vertically divide the rectangle metal floor equally
(2) long side；
The slot antenna element includes closed at both ends and forms the gap (4) of perforation on metal floor (2) thickness direction, should
The extending direction in gap (4) and the length direction of monopole radiating doublet (3) are respectively positioned on perpendicular to the medium substrate (1) surface
Same plane on；
The feed structure unit includes metallic connection parts (5) and two feed ports (6), metallic connection parts (5) setting
In one end of monopole radiating doublet (3), described two feed ports (6) are connected to two sides in the gap (4)
On, the other end of two feed ports (6) vertically through the medium substrate (1) and is connected to the metallic connection parts
(5) two sides.
2. the dual polarized antenna of planar monopole and gap structure according to claim 1, which is characterized in that the metal
Floor (2) is set to the side of the medium substrate (1) lower surface, and the monopole radiating doublet (3) is set to medium substrate
(1) other side of upper surface, and metal floor (2) and the monopole radiating doublet (3) are in the thickness direction of medium substrate (1)
Upper formation interlocks.
3. the dual polarized antenna of planar monopole and gap structure according to claim 1, which is characterized in that further include feedback
Electric line, described two feed ports (6) are electrically connected with the feeder line respectively.
4. the dual polarized antenna of planar monopole and gap structure according to claim 3, which is characterized in that when the feedback
When electric line carries out even mould feed by two feed ports (6), plane single pole sub antenna cell operation simultaneously gives off vertical pole
Change wave.
5. the dual polarized antenna of planar monopole and gap structure according to claim 3, which is characterized in that work as feed line
When road carries out odd mould feed by two feed ports (6), slot antenna element works and gives off horizontal polarized wave.
6. the dual polarized antenna of planar monopole and gap structure according to claim 1, which is characterized in that the metal
The long side length on floor (2) is half-wavelength, and bond length is quarter-wave.
7. the dual polarized antenna of planar monopole and gap structure according to claim 6, which is characterized in that the monopole
The length of sub- radiating doublet (3) is quarter-wave.
8. the dual polarized antenna of planar monopole and gap structure according to claim 6, which is characterized in that the gap
(4) length is a quarter guide wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083077.2A CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083077.2A CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
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| Publication Number | Publication Date |
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| CN109742546A true CN109742546A (en) | 2019-05-10 |
| CN109742546B CN109742546B (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910083077.2A Active CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512815A (en) * | 2022-02-22 | 2022-05-17 | 上海交通大学 | Non-self-complementary broadband antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152517A1 (en) * | 2012-11-30 | 2014-06-05 | Hon Hai Precision Industry Co., Ltd. | Antenna structure for mimo application |
-
2019
- 2019-01-28 CN CN201910083077.2A patent/CN109742546B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152517A1 (en) * | 2012-11-30 | 2014-06-05 | Hon Hai Precision Industry Co., Ltd. | Antenna structure for mimo application |
Non-Patent Citations (2)
| Title |
|---|
| TRIVESH KUMAR ET-AL: "《Broadband Circularly Polarized Printed Slot-Monopole Antenna》", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
| XIN WANG ET-AL: "《Compact Dual-Polarized Antenna Combining Printed Monopole and HalfSlot》", 《2009 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512815A (en) * | 2022-02-22 | 2022-05-17 | 上海交通大学 | Non-self-complementary broadband antenna |
| CN114512815B (en) * | 2022-02-22 | 2024-04-19 | 上海交通大学 | Non-self-complementary broadband antenna |
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| Publication number | Publication date |
|---|---|
| CN109742546B (en) | 2020-12-25 |
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