CN109742545A - A kind of dual polarized antenna of planar monopole and half slot structure - Google Patents
A kind of dual polarized antenna of planar monopole and half slot structure Download PDFInfo
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- CN109742545A CN109742545A CN201910083076.8A CN201910083076A CN109742545A CN 109742545 A CN109742545 A CN 109742545A CN 201910083076 A CN201910083076 A CN 201910083076A CN 109742545 A CN109742545 A CN 109742545A
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- half slot
- monopole
- antenna
- dual polarized
- medium substrate
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Abstract
The invention discloses the dual polarized antennas of a kind of planar monopole and half slot 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；Half slot antenna unit is formed by opening up half slot 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 half slot antenna unit 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 half slot 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 half slot 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 half slot structure of the present invention, including medium base
Plate, plane single pole sub antenna unit, half slot antenna unit 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 side of medium substrate；The monopole radiating doublet is elongated, is set to and is given an account of
The upper surface other side of matter substrate, the long side of metal floor described in the extending direction perpendicular bisected of monopole radiating doublet；Metal
The long side intermediate vertical being located in the middle part of the lower surface on floor opens up jagged, which extends to form one on metal floor
Open half slot closed at one end in end, half slot is as the half slot antenna unit；The feed structure unit includes metal connection
Portion and two feed ports, the metallic connection parts are set to one end of monopole radiating doublet, described two feed ports point
It is not connected on two sides in the gap, the other end of two feed ports is vertically through the medium substrate and difference
It is connected to the two sides of the metallic connection parts.
Preferably, the part that the metal floor and the monopole radiating doublet are located at medium substrate central region exists
It is formed and is interlocked on the thickness direction of medium substrate.So as to improve the matching performance of plane single pole sub antenna unit.
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, half slot antenna cell operation simultaneously 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；Half slot is formed by opening up half slot 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 half slot antenna unit all have low section, light-weight, easy to process feature, because
This, the dual polarized antenna flexible design degree formed by the two higher also simple, compact, production easy to process with structure
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 half slot structure, including are situated between
Matter substrate 1, metal floor 2, monopole radiating doublet 3, half slot 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 covered on the right side of the lower surface of medium substrate 1,
The monopole radiating doublet 3 of top layer is covered 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 located at the middle part of 1 lower surface of medium substrate, another long side
With lower surface a side of medium substrate 1 along concordant.And preferably, the long side length of metal floor 2 is half-wavelength, short side is long
Degree is 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, the long side of extending direction perpendicular bisected metal floor 2.
The middle position of the long side in the middle part of the lower surface of medium substrate 1 of metal floor 2 vertically open up it is jagged, should
Notch extends on metal floor 2 and forms half slot 4 closed at one end open at one end, by half slot 4 as dual polarized antenna
Half slot antenna unit.Specifically, the length of half slot 4 is preferably a quarter guide wavelength in the present embodiment.
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 of half slot 4 of 1 lower surface of matter substrate.
Referring to Fig. 5, in order to improve the matching performance of monopole, monopole radiating doublet 3 and metal floor 2 are located at
The part of 1 central region of medium substrate has one section of formation to be overlapping on 1 thickness direction of medium substrate.That is, being located at upper table
One end of the monopole radiating doublet 3 of face side extends and exceeds one section of the edge of the metal floor 2 positioned at the lower surface other side
Then length is connected with metallic connection parts 5.
And two feed ports 6 and metallic connection parts 5 can change half slot antenna unit relative to the location of half slot 4
Self-impedance, to can also improve the matching performance of half slot antenna unit.
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, half 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 24% (2.2GHz-2.8GHz)；Under even mould feeding mode, the work frequency of antenna
Rate is 2.4GHz, and -10dB the impedance bandwidth of antenna is 24% (2.2GHz-2.8GHz).The work of antenna under two kinds of feeding classifications
Frequency is consistent with -10dB impedance bandwidth.
As shown in fig. 7, planar monopole of the present embodiment and the dual polarized antenna of half slot 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 half slot 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 half slot 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 half slot structure, which is characterized in that including medium substrate (1), plane list
Pole sub-antenna unit, half slot antenna unit 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 side of medium substrate (1)；The monopole radiating doublet (3) is elongated, is set to institute
State the upper surface other side of medium substrate (1), metal floor described in the extending direction perpendicular bisected of monopole radiating doublet (3)
(2) long side；
The long side intermediate vertical of metal floor (2) being located in the middle part of the lower surface opens up jagged, and the notch is in metal floor
(2) one end open half slot (4) closed at one end is extended to form on, which is used as the half slot antenna unit；
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 half slot structure according to claim 1, which is characterized in that the metal
Floor (2) and the monopole radiating doublet (3) are located at the thickness of the part in medium substrate (1) of medium substrate (1) central region
Degree side is upwardly formed staggeredly.
3. the dual polarized antenna of planar monopole and half slot 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 half slot 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 half slot structure according to claim 4, which is characterized in that work as feed line
When road carries out odd mould feed by two feed ports (6), half slot antenna cell operation simultaneously gives off horizontal polarized wave.
6. the dual polarized antenna of planar monopole and half slot 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 half slot 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 half slot structure according to claim 6, which is characterized in that half slot
(4) length is a quarter guide wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083076.8A CN109742545B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and half-slot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083076.8A CN109742545B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and half-slot structure |
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| Publication Number | Publication Date |
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| CN109742545A true CN109742545A (en) | 2019-05-10 |
| CN109742545B CN109742545B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910083076.8A Active CN109742545B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and half-slot structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783703A (en) * | 2019-11-12 | 2020-02-11 | 榆林学院 | Ground plate gap radiation n-type parasitic structure multi-frequency planar monopole antenna |
| CN112054294A (en) * | 2020-08-03 | 2020-12-08 | 中山大学 | Compact cross-polarized twelve-unit 5G multi-input multi-output 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 CN201910083076.8A patent/CN109742545B/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 (1)
| Title |
|---|
| XIN WANG ET-AL: "《Compact Dual-Polarized Antenna Combining Printed Monopole and HalfSlot》", 《2009 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783703A (en) * | 2019-11-12 | 2020-02-11 | 榆林学院 | Ground plate gap radiation n-type parasitic structure multi-frequency planar monopole antenna |
| CN110783703B (en) * | 2019-11-12 | 2021-12-03 | 榆林学院 | Ground plate gap radiation n-type parasitic structure multi-frequency planar monopole antenna |
| CN112054294A (en) * | 2020-08-03 | 2020-12-08 | 中山大学 | Compact cross-polarized twelve-unit 5G multi-input multi-output antenna |
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| Publication number | Publication date |
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| CN109742545B (en) | 2021-01-26 |
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