CN209515989U - A kind of low section circular polarized antenna of directional diagram diversity - Google Patents
A kind of low section circular polarized antenna of directional diagram diversity Download PDFInfo
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- CN209515989U CN209515989U CN201920052775.1U CN201920052775U CN209515989U CN 209515989 U CN209515989 U CN 209515989U CN 201920052775 U CN201920052775 U CN 201920052775U CN 209515989 U CN209515989 U CN 209515989U
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- gap
- strip crevice
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- outer ring
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- 238000010586 diagram Methods 0.000 title claims abstract description 45
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- 239000000523 sample Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000005388 cross polarization Methods 0.000 description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
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- 230000005404 monopole Effects 0.000 description 2
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- 239000002356 single layer Substances 0.000 description 2
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- 229910001316 Ag alloy Inorganic materials 0.000 description 1
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- 229910001128 Sn alloy Inorganic materials 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a kind of low section circular polarized antenna of directional diagram diversity, including coaxial feed probe, medium substrate and metal floor set on medium substrate lower surface；The upper surface center of medium substrate is equipped with circular radiation patch；An outer ring gap, a notched inner circular gap, identical first and second strip crevice of two length and third and fourth identical strip crevice of two length are offered on circular radiation patch, inside and outside circle gap and circular radiation patch are concentric, first and second strip crevice and third and fourth strip crevice are distributed on the quarter position in outer ring gap by symmetrical centre of the circular radiation patch center of circle, and it is different that strip crevice is located at the inside and outside two parts length in outer ring gap；Coaxial feed probe is connect there are two the center, the non-center position that pass through medium substrate and metal floor with circular radiation patch.The utility model is compact-sized simple, and section is low, easy to manufacture, has good directionality.
Description
Technical field
The utility model relates to the technical fields of circular polarized antenna, refer in particular to a kind of low section entelechy of directional diagram diversity
Change antenna.
Background technique
In order to improve the quality of Radio Link and the reliability of communications reception, antenna diversity is a kind of effective method.It
Multipath fading can effectively be inhibited.In antenna diversity design, directional diagram diversity has received widespread attention and studies application.By
Different antenna patterns may be implemented in the directional diagram diversity performance of antenna.It can position two or more antenna elements simultaneously
Part makes the overall size of antenna system become smaller.In addition, circular polarisation (CP) antenna is highly effective in terms of to anti-multipath jamming.With regard to mesh
From the point of view of preceding report, while having that the antenna of circular polarisation performance and directional diagram diversity is very few, and they have multilayer
With relative complex structure.
According to investigations with understanding, disclosed prior art is as follows:
2014, Changjiang Deng, Zhenghe Feng et al. was in " IEEE TRANSACTIONS ON
ANTENNAS AND PROPAGATION " delivers entitled " A Circularly Polarized Pattern Diversity
In the article of Antenna for Hemispherical Coverage ", antenna, which consists of two parts, realizes directional diagram diversity
Circular polarisation performance.The bending monopole wherein fed in the same direction realizes the antenna pattern of omnidirectional, and another is L-shaped by motivating
Monopole realizes that broadside radiates circular polarisation performance.Bending of the antenna due to micro-strip, double-layer structure, total is relative complex and has
There is higher section.
2018, Wei Lin, Hang Wong et al. was in " IEEE TRANSACTIONS ON ANTENNAS AND
PROPAGATION " delivers entitled " Circularly Polarized Antenna With Reconfigurable
Broadside and Conical Beams Facilitated by a Mode Switchable Feed Network's "
In article, a kind of circular polarized antenna of directional diagram reconstructable is proposed.Antenna is by restructural feeding network, using L shape probe coupling
Feed is closed, TM11 the and TM21 mode of upper layer radiating antenna is motivated, forms the circular polarisation of broadside and conical directional diagram reconstructable
Antenna.Due to the feeding network and restructural DC bias circuit of antenna, the structure of entire antenna is relative complex, and also have compared with
High section is unfavorable for minimizing.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts and insufficient proposes a kind of the low of directional diagram diversity
Profile round polarizing antenna, the antenna only have single layer structure, and two ports control the directional diagram with broadside and cone respectively
Circular polarization characteristics, the antenna structure is simple, easy to manufacture, has good directionality, can work in GPS L1 wave
Section.
To achieve the above object, a kind of technical solution provided by the utility model are as follows: low section circle of directional diagram diversity
Poliarizing antenna includes coaxial feed probe, medium substrate and the metal floor set on the medium substrate lower surface；The medium
The upper surface center of substrate is equipped with concentric circular radiation patch；It is offered respectively on the circular radiation patch outside one
Round gap, a notched inner circular gap, identical first strip crevice of two length and the second strip crevice and
The identical third strip crevice of two length and Article 4 shape gap, the inner circular gap are located in outer ring gap, and should
Inside and outside circle gap and the same center of circle of circular radiation patch, first strip crevice and the second strip crevice and third bar shaped
Gap and Article 4 shape gap are symmetrically distributed in four etc. of outer ring gap by symmetrical centre of the center of circle of circular radiation patch
On part position, and a part of each strip crevice is located in outer ring gap, and another part is located at outside outer ring gap, bar shaped
It is different that gap is located at the inside and outside two parts length in outer ring gap；The coaxial feed probe there are two pass through medium substrate and
The center and non-center position of metal floor, and connect with circular radiation patch, for feeding excitation circular radiation patch,
Wherein, centrally located coaxial feed probe motivates broadside antenna pattern, and the coaxial feed probe positioned at non-central place swashs
Encourage cone shaped radiation directional diagram.
Further, the medium substrate and metal floor are the identical square structure of size, and first bar shaped
Gap is located on the diagonal line of the square structure with the second strip crevice and third strip crevice and Article 4 shape gap.
The utility model compared with prior art, have the following advantages that with the utility model has the advantages that
1, the utility model antenna only has single-layer medium substrate, has lower section, about 0.02 λ0, greatly reduce
The section height of antenna.
2, the utility model antenna is when realizing the broadside with similar frequency bands and conical circular polarization radiation directional diagram, nothing
Additional feeding network is needed, only single coaxial feed need to be distinguished, significantly simplify the structure of antenna.
3, the utility model antenna has the radiation direction of relatively high gain, preferable isolation and low-cross polarization
Figure, in the broadside and cone shaped radiation directional diagram of antenna, the highest-gain of antenna respectively reaches 7.2dBi and 4.2dBi, and intersects
Polarization is greater than 20dB, and the isolation of two ports of antenna is less than -22dB in passband frequency band.
4, the PCB technology that the utility model antenna is able to use standard is fabricated, low in cost.It and is plane
Structure, section is low, it is compact-sized, be easy to and the conformal design of rear class wireless communication system.
Detailed description of the invention
Fig. 1 is the perspective view of the low section circular polarized antenna of directional diagram diversity.
Fig. 2 is the top view of the low section circular polarized antenna of directional diagram diversity.
Fig. 3 is the bottom view of the low section circular polarized antenna of directional diagram diversity.
Fig. 4 is the S parameter simulation result curve graph of the low section circular polarized antenna of directional diagram diversity.
Axis ratio when Fig. 5 is low section circular polarized antenna excitation broadside antenna pattern (apex drive) of directional diagram diversity
Simulation curve figure.
Fig. 6 be directional diagram diversity low section circular polarized antenna motivate broadside antenna pattern (apex drive) when
1.575GHz phi=0 ° and phi=90 ° of axis are than simulation curve figure.
Fig. 7 be directional diagram diversity low section circular polarized antenna motivate broadside antenna pattern (apex drive) when
The E surface radiation directional diagram of 1.575GHz.
When Fig. 8 is low section circular polarized antenna excitation cone shaped radiation directional diagram (the non-central feed) of directional diagram diversity
Axis is than simulation curve figure.
Fig. 9 be directional diagram diversity low section circular polarized antenna motivate cone shaped radiation directional diagram (non-central feed) when
1.575GHz phi=0 ° and phi=90 ° of axis are than simulation curve figure.
When Figure 10 is that the low section circular polarized antenna of directional diagram diversity motivates cone shaped radiation directional diagram (non-central feed)
In the E surface radiation directional diagram of 1.575GHz.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
As shown in Figure 1 to Figure 3, the low section circular polarized antenna of directional diagram diversity provided by the present embodiment, including circle
Radiation patch 1, medium substrate 2, metal floor 3, coaxial feed probe 4；The medium substrate 2 and metal floor 3 are size
Identical square structure, and the metal floor 3 is located at the lower surface of medium substrate 2；The circular radiation patch 1 is located at Jie
The upper surface center of matter substrate 2, and it is concentric with medium substrate 2；It is offered respectively on the circular radiation patch 1 outside one
Identical first strip crevice 7 of 5, one, round gap, 6, two, notched inner circular gap length and the second strip crevice 8
And the identical third strip crevice 9 of two length and Article 4 shape gap 10, the inner circular gap 6 are placed in outer ring gap
In 5, and the inside and outside round gap 6,5 is stitched with the same center of circle of circular radiation patch 1, first strip crevice 7 and the second bar shaped
Gap 8 and third strip crevice 9 are symmetrically distributed in using the center of circle of circular radiation patch 1 as symmetrical centre with Article 4 shape gap 10
On the quarter position in outer ring gap 5, and first strip crevice 7 and the second strip crevice 8 and third strip crevice 9 with
Just on the diagonal line of above-mentioned square structure, a part of each strip crevice is located at outer ring in Article 4 shape gap 10
In gap 5, another part is located at outside outer ring gap 5, and strip crevice is located at the inside and outside two parts length in outer ring gap 5
It is different；There are two the centers and non-center position that pass through medium substrate 2 and metal floor 3 for the coaxial feed probe 4, and
It is connect with circular radiation patch 1, for feeding excitation circular radiation patch 1, wherein centrally located coaxial feed probe 4
Broadside antenna pattern is motivated, the coaxial feed probe 4 positioned at non-central place motivates cone shaped radiation directional diagram.
After the dimensional parameters for adjusting low section circular polarized antenna each section of the directional diagram diversity of the present embodiment, pass through calculating
And electromagnetic-field simulation, verifying emulation is carried out to the low section circular polarized antenna of the directional diagram diversity of the present embodiment, such as Fig. 4 institute
Show, gives the curve of S parameter simulation result of the antenna in 1.4GHz~1.7GHz frequency range, in figure | S11 | in being
The heart motivates the curve of broadside figure, in figure | S22 | it is the curve of non-center-driven cone directional diagram, | S21 | it is between port
Isolation.From the figure, it can be seen that | S11 | and | S22 | value less than -10dB frequency range be 1.553GHz-1.6GHz
And 1.568GHz-1.589GHz, GPSL1 wave band can be covered, the isolation between port is less than -22dB.Work is realized same
One frequency band.
The HFSS model of the low section circular polarized antenna emulation of the directional diagram diversity of the present embodiment is in excitation broadside radiation side
To figure when axis ratio with frequency variation analogous diagram it is as shown in Figure 5, it can be seen that antenna in 1.571GHz-1.583GHz axis than small
In 3dB, circular polarization radiation characteristic is realized.Antenna is schemed and E surface radiation direction for phi=0 ° in 1.575GHz with phi-90 ° of axis ratio
Figure is as shown in Figure 6 and Figure 7 respectively, and antenna is broadside antenna pattern, and highest-gain reaches 7.2dBi, and cross polarization is greater than
20dB。
The HFSS model of the low section circular polarized antenna emulation of the directional diagram diversity of the present embodiment is in excitation cone shaped radiation
Axis ratio when directional diagram with frequency changes analogous diagram as shown in figure 8, antenna axis ratio in 1.569GHz-1.578GHz is less than 3dB,
Realize circular polarization radiation characteristic.Antenna is distinguished with phi-90 ° of axis than figure and E surface radiation directional diagram for phi=0 ° in 1.575GHz
As shown in Figure 9 and Figure 10, antenna is cone shaped radiation pattern antenna, and highest-gain reaches 4.2dBi, and cross polarization is greater than
20dB。。
In above-described embodiment, the medium substrate 2 is made of 2.55 material of dielectric constant, 1 He of circular radiation patch
Metal floor is all made of metal material and is made, which can be any one in aluminium, iron, tin, copper, silver, gold and platinum,
It or is any one alloy of aluminium, iron, tin, copper, silver, gold and platinum.
The above, only the utility model patent preferred embodiment, but the protection scope of the utility model patent is simultaneously
Not limited to this, anyone skilled in the art is in the range disclosed in the utility model patent, according to this
Technical solution and its utility model design of utility model patent are subject to equivalent substitution or change, belong to the utility model patent
Protection scope.
Claims (2)
1. a kind of low section circular polarized antenna of directional diagram diversity, includes coaxial feed probe, medium substrate and be set to Jie
The metal floor of matter base lower surface；It is characterized by: the upper surface center of the medium substrate is equipped with concentric circle
Radiation patch；An outer ring gap, notched inner circular gap, two are offered on the circular radiation patch respectively
Identical first strip crevice of a length and the second strip crevice and the identical third strip crevice of two length and Article 4
Shape gap, the inner circular gap are located in outer ring gap, and the inside and outside round gap and the same circle of circular radiation patch
The heart, first strip crevice and the second strip crevice and third strip crevice and Article 4 shape gap are with circular radiation patch
The center of circle be that symmetrical centre is symmetrically distributed on the quarter position in outer ring gap, and a part of each strip crevice is located at
In outer ring gap, another part is located at outside outer ring gap, and strip crevice is located at the inside and outside two parts length in outer ring gap
It is different；There are two the centers and non-center position that pass through medium substrate and metal floor for the coaxial feed probe, and with
Circular radiation patch connection, for feeding excitation circular radiation patch, wherein centrally located coaxial feed probe motivates wide
Side antenna pattern, the coaxial feed probe positioned at non-central place motivate cone shaped radiation directional diagram.
2. a kind of low section circular polarized antenna of directional diagram diversity according to claim 1, it is characterised in that: the medium
Substrate and metal floor are the identical square structure of size, and first strip crevice and the second strip crevice and third
Strip crevice and Article 4 shape gap are located on the diagonal line of the square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920052775.1U CN209515989U (en) | 2019-01-14 | 2019-01-14 | A kind of low section circular polarized antenna of directional diagram diversity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920052775.1U CN209515989U (en) | 2019-01-14 | 2019-01-14 | A kind of low section circular polarized antenna of directional diagram diversity |
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| Publication Number | Publication Date |
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| CN209515989U true CN209515989U (en) | 2019-10-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888470A (en) * | 2019-01-14 | 2019-06-14 | 华南理工大学 | A kind of low section circular polarized antenna of directional diagram diversity |
| CN112909580A (en) * | 2021-01-26 | 2021-06-04 | 华南理工大学 | Low-profile circularly polarized equal-flux antenna module |
-
2019
- 2019-01-14 CN CN201920052775.1U patent/CN209515989U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888470A (en) * | 2019-01-14 | 2019-06-14 | 华南理工大学 | A kind of low section circular polarized antenna of directional diagram diversity |
| CN109888470B (en) * | 2019-01-14 | 2023-12-15 | 华南理工大学 | Low-profile circularly polarized antenna with directional diagram diversity |
| CN112909580A (en) * | 2021-01-26 | 2021-06-04 | 华南理工大学 | Low-profile circularly polarized equal-flux antenna module |
| US11742594B2 (en) | 2021-01-26 | 2023-08-29 | South China University Of Technology | Low-profile circularly polarized isoflux antenna module |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |