CN105261825A - Wideband wide-beam circularly polarized dielectric resonator antenna fed by spiral slit - Google Patents
Wideband wide-beam circularly polarized dielectric resonator antenna fed by spiral slit Download PDFInfo
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- CN105261825A CN105261825A CN201410476356.2A CN201410476356A CN105261825A CN 105261825 A CN105261825 A CN 105261825A CN 201410476356 A CN201410476356 A CN 201410476356A CN 105261825 A CN105261825 A CN 105261825A
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- dielectric resonator
- circularly polarized
- spiral slit
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Abstract
A kind of broadband wide-beam circularly polarized dielectric resonator antenna fed by spiral slit of the disclosure of the invention, belongs to electronic technology field. The antenna includes Rectangular Enclosure with Participating Media substrate, overwrite media substrate front side and etches apertured metal floor, Chip-R, Rectangular Enclosure with Participating Media resonator and the coaxial line fed set on substrate back to antenna. The present invention is transferred to below gap by coaxial feeding, energy by coaxial line, has motivated main mould into Rectangular Enclosure with Participating Media resonator by Archimedian screw slot-coupled
With
, the two orthogonal modes generation circular polarization radiation. The present invention realizes broadband circle polarized function by single-point feedback on the basis of simple dielectric resonator structure, and has wider wave beam.
Description
Technical field
The invention belongs to electronic technology field, particularly broadband wide-beam circularly polarized dielectric resonator antenna technology.
Background technology
The fast development of Modern wireless communication technology excites the research of people to circularly polarized dielectric resonator antenna (DRA), to solve the communication issue that polarization mismatch brings.Realize the broadband circle polarized method of medium resonator antenna at present and be mainly divided into two kinds: the first is for using n-point feed, and the second is for using single-point feedback.First method can realize wider bandwidth, but needs to introduce complicated feed structure, increases design difficulty.Second method feed structure is simple, but bandwidth relative narrower, generally only have the 3dB axial ratio bandwidth of 3%.
At present, the circularly polarized dielectric resonator antenna of single-point feedback that some bandwidth can compare favourably with n-point feed is reported out in succession.The people such as M.I.Sulaiman and S.K.Khamas in 2011 have delivered the article that a section is entitled as " Asinglyfedwidebandcircularlypolarizeddielectricresonator antennausingconcentricopenhalf-loops " on IEEEAntennasandWirelessPropagationLetter, article medium resonant aerial, by ring feed of opening a way with one heart, achieves the 3dB axial ratio bandwidth of 13%.The people such as J.M.Patin and S.K.Sharma in 2012 have delivered the article being entitled as " Singlefeedaperture-coupledwidebanddielectricresonatorant ennawithcircularpolarizationforku-bandapplications " on InternationalJournalofAntennasandPropagation, report have employed bowtie-shaped the right-angled intersection line of rabbet joint to the design of cylindrical dielectric resonator antenna feed, achieve the 3dB axial ratio bandwidth of 17.24%, compared to the feed structure of the linear right-angled intersection line of rabbet joint, bandwidth has had significant lifting, the people such as Zou Meng and Pan Jin in 2013 have delivered the article that a section is entitled as " Awidebandcircularlypolarizedrectangulardielectricresonat orantennaexcitedbyalumpedresistivelyloadedmonofilar-spir al-slot " on IEEEAntennasandWirelessPropagationLetter, the medium resonator antenna reported is by the single line type spiral slit feed of resistor loaded, by this feed design, the 3dB axial ratio bandwidth of 18.7% can be realized.
Current, how by this simple feed structure of single-point feedback, promote the bandwidth of circularly polarized dielectric resonator antenna further, remain the technological difficulties that academia is worth studying.
Summary of the invention
The invention discloses a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed, object is to provide that a kind of structure is simple, feed Broadband-circularlydielectric dielectric resonator antenna easily.
The present invention for the adopted technical scheme that solves the problem is, a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed, comprise Rectangular Enclosure with Participating Media substrate, overwrite media substrate front side etch apertured metal floor, Chip-R, Rectangular Enclosure with Participating Media resonator and be located at the coaxial line of substrate back to antenna feed, it is characterized in that, the gap that described metal floor etches is that two Archimedian screw gap complementations that size is identical, the hand of spiral is contrary are formed, and gap is positioned at the coverage of dielectric resonator.
Described Archimedian screw gap forms by the rectilinear slot arm that length is different is end to end, the interval metal patch having width consistent between every bar rectilinear slot arm, and the brachium in Archimedian screw gap meets:
l
1＝l(l＝30w
s)，l
2＝l
3＝l-(w
s+d
s)，l
2i＝l
2i+1＝l-(2i-1)(w
s+d
s)(i＝2,3,...)，l
1+l
2+l
3+l
4＝1.2λ
g
Wherein l
1for the length of most latter end, rectilinear slot arm that length is the longest, l
2for connecting with most latter end rectilinear slot arm, the length of rectilinear slot arm that length second is long, the like.λ
gfor equivalent magnetic current guide wavelength in center of antenna frequency place spiral slit.
Described Chip-R lays respectively at the latter end point midway in two Archimedian screw gaps, connection metal floor, Chip-R one end, and the other end connects interval metal patch.
The resistance R of Chip-R meets R=Z
0, Z
0for the characteristic impedance in Archimedian screw gap, center of antenna frequency place.
The inner and outer conductor of described coaxial line connects two end points of interval metal patch respectively through medium substrate.
The present invention is by coaxial feeding, and energy is transferred to below gap by coaxial line, and energy has encouraged main mould by Archimedian screw slot-coupled to Rectangular Enclosure with Participating Media resonator
with
these two orthogonal modess produce circular polarization radiation.
The invention has the beneficial effects as follows, the present invention carries out feed by the Archimedian screw gap of introducing Chip-R loading to medium resonator antenna, the basis of simple dielectric resonator structure achieves broadband circle polarized function by single-point feedback, and there is wider wave beam.
Accompanying drawing explanation
The Facad structure schematic diagram that Fig. 1 (a) is embodiment of the present invention antenna;
The side structure schematic diagram that Fig. 1 (b) is embodiment of the present invention antenna;
Fig. 2 is return loss emulation and the measured curve schematic diagram of the embodiment of the present invention;
Fig. 3 is the simulation curve schematic diagram of the right-handed circular polarization axial ratio of the embodiment of the present invention;
Fig. 4 is the right-handed circular polarization gain simulation curve schematic diagram of the embodiment of the present invention;
Fig. 5 is the x-z plane of the embodiment of the present invention and the axial ratio emulation schematic diagram of y-z plane;
Fig. 6 is the radiation efficiency emulation schematic diagram of the embodiment of the present invention;
Fig. 7 is the Direction Pattern Simulation schematic diagram of the embodiment of the present invention.
Drawing reference numeral illustrates: 1. medium substrate, 2. Rectangular Enclosure with Participating Media resonator, 3. distributing point, 4. Chip-R, 5. Archimedian screw gap, 6. metal floor, 7. coaxial line, 8 interval metal patches.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Embodiment schematic diagram by the broadband wide-beam circularly polarized dielectric resonator antenna of spiral slit feed of the present invention, as shown in Fig. 1 (a), (b), comprises Rectangular Enclosure with Participating Media substrate 1, overwrite media substrate front side etch apertured metal floor 6, Chip-R 4, Rectangular Enclosure with Participating Media resonator 2 and be located at the coaxial line 7 of substrate back to antenna feed.
The relative dielectric constant of medium substrate 1 is 2.2, and thickness is 2mm, and cross section size is 75*75mm
2; Rectangular Enclosure with Participating Media resonator to be relative dielectric constant be 12 pottery, its long a, wide b, high c correspondingly-sized are a=b=40mm, c=10cm; Archimedian screw gap 5 forms by 14 rectilinear slot arms that length is different are end to end, the interval metal patch having width consistent between every bar rectilinear slot arm, and the width in Archimedian screw gap 5 is w
s=0.56mm, the width of interval metal patch 8 is d
s=0.56mm; Equivalent magnetic current guide wavelength λ in Archimedian screw gap, center of antenna frequency place 5
g=51.3mm.
The parameter l of the length of the most latter end in Archimedian screw gap 5, rectilinear slot arm that length is the longest
1for 16.8mm, Chip-R 4 is welded on the center in outermost layer gap.Chip-R 4 resistance R is set to 50 ohm by the characteristic impedance according to Archimedian screw gap, center of antenna frequency place 5.
In above-mentioned antenna, concrete choosing of size is only embodiments of the invention, is not limited to the present invention, for a person skilled in the art, can adjust the size of each parts based on the actual application requirements.The optimization of Circular polarization ratio is realized by the brachium in adjustable screw gap 5; The change of resonance frequency is realized by the height adjusting dielectric resonator 2.
Parameter S11 emulation and test result as shown in Figure 2, as seen from Figure 2, S11<-10dB in embodiment antenna 3dB axial ratio bandwidth.
Performance emulation testing is carried out to the antenna of above-described embodiment: antenna axial direction axial ratio AR Performance Simulation Results as shown in Figure 3, the frequency range of antenna AR<3dB is 1.93 – 2.50GHz, relative bandwidth is 25.8%, and is all included within S11<-10dB bandwidth.
As shown in Figure 4, gain G ain>3dB within 3dB axial ratio bandwidth, reaches 5.8dB in 2.27GHz gain to the Performance Simulation Results of antenna dextrorotation gain.
As seen from Figure 5, embodiment center of antenna frequency place x-z plane 3dB axial ratio lobe width is 170 degree, and y-z plane 3dB axial ratio lobe width is 160 degree, the non-constant width of wave beam.
The Performance Simulation Results of antenna radiation efficiency as shown in Figure 6, is greater than 56% within 3dB axial ratio bandwidth, reaches 95.8% in 2.21GHz efficiency.
Antenna the directional diagram of 2.12GHz Performance Simulation Results as shown in Figure 7, can find out embodiment antenna achieve broadband wide-beam circular polarization design.
As can be seen from simulation result, the present invention achieves broadband and wide wave beam circular polarization function by single-point feedback on the basis of simple dielectric resonator structure.
Claims (5)
1. the broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed, comprise Rectangular Enclosure with Participating Media substrate, overwrite media substrate front side etch apertured metal floor, Chip-R, Rectangular Enclosure with Participating Media resonator and be located at the coaxial line of substrate back to antenna feed, it is characterized in that, the gap that described metal floor etches is that two Archimedian screw gap complementations that size is identical, the hand of spiral is contrary are formed, and gap is positioned at the coverage of dielectric resonator.
2. a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed as claimed in claim 1, it is characterized in that, described Archimedian screw gap forms by the rectilinear slot arm that length is different is end to end, the interval metal patch having width consistent between every bar rectilinear slot arm, the brachium in Archimedian screw gap meets:
l
1＝l(l＝30w
s)，l
2＝l
3＝l-(w
s+d
s)，l
2i＝l
2i+1＝l-(2i-1)(w
s+d
s)(i＝2，3，...)，l
1+l
2+l
3+l
4＝1.2λ
g
Wherein l
1for the length of most latter end, rectilinear slot arm that length is the longest, l2 is the length with the most rectilinear slot arm that latter end rectilinear slot arm connects, length second is long, the like; λ
gfor equivalent magnetic current guide wavelength in center of antenna frequency place spiral slit.
3. a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed as claimed in claim 1, it is characterized in that, described Chip-R lays respectively at the latter end point midway in two Archimedian screw gaps, connection metal floor, Chip-R one end, the other end connects interval metal patch.
4. a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed as claimed in claim 1, it is characterized in that, the resistance R of Chip-R meets R=Z
0, Z
0for the characteristic impedance in Archimedian screw gap, center of antenna frequency place.
5. a kind of broadband wide-beam circularly polarized dielectric resonator antenna by spiral slit feed as claimed in claim 1, it is characterized in that, the inner and outer conductor of described coaxial line connects two end points of interval metal patch respectively through medium substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476356.2A CN105261825A (en) | 2015-06-16 | 2015-06-16 | Wideband wide-beam circularly polarized dielectric resonator antenna fed by spiral slit |
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|---|---|---|---|
| CN201410476356.2A CN105261825A (en) | 2015-06-16 | 2015-06-16 | Wideband wide-beam circularly polarized dielectric resonator antenna fed by spiral slit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016197823A1 (en) * | 2016-02-01 | 2016-12-15 | 中兴通讯股份有限公司 | Circularly polarised dielectric resonator antenna, parameter determination method therefor, and communication device |
| CN107871933A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of medium resonator antenna |
| CN111710979A (en) * | 2020-06-23 | 2020-09-25 | 南京信息工程大学 | Ka-band low-profile broadband high-gain annular cylindrical dielectric resonator antenna |
| CN112928478A (en) * | 2021-01-25 | 2021-06-08 | 电子科技大学 | Wide-beam stepped dielectric resonator antenna based on high-order mode superposition |
| CN112928477A (en) * | 2021-01-25 | 2021-06-08 | 电子科技大学 | Wide-beam multi-dielectric composite resonator antenna based on directional diagram superposition |
| CN113111493A (en) * | 2021-03-18 | 2021-07-13 | 东莞理工学院 | N-arm Archimedes spiral antenna broadband multi-OAM vortex electromagnetic wave generation method |
| CN113708046A (en) * | 2021-08-01 | 2021-11-26 | 南通大学 | Miniaturized broadband circular polarization three-dimensional printing mixed dielectric resonator antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700939A (en) * | 2013-12-24 | 2014-04-02 | 电子科技大学 | Broadband-circularly-polarized dielectric resonator antenna |
-
2015
- 2015-06-16 CN CN201410476356.2A patent/CN105261825A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700939A (en) * | 2013-12-24 | 2014-04-02 | 电子科技大学 | Broadband-circularly-polarized dielectric resonator antenna |
Non-Patent Citations (1)
| Title |
|---|
| MENG ZOU 等: ""A Wideband Circularly Polarized Rectangular Dielectric Resonator Antenna Excited by an Archimedean Spiral Slot"", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016197823A1 (en) * | 2016-02-01 | 2016-12-15 | 中兴通讯股份有限公司 | Circularly polarised dielectric resonator antenna, parameter determination method therefor, and communication device |
| CN107871933A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of medium resonator antenna |
| CN111710979A (en) * | 2020-06-23 | 2020-09-25 | 南京信息工程大学 | Ka-band low-profile broadband high-gain annular cylindrical dielectric resonator antenna |
| CN112928478A (en) * | 2021-01-25 | 2021-06-08 | 电子科技大学 | Wide-beam stepped dielectric resonator antenna based on high-order mode superposition |
| CN112928477A (en) * | 2021-01-25 | 2021-06-08 | 电子科技大学 | Wide-beam multi-dielectric composite resonator antenna based on directional diagram superposition |
| CN112928477B (en) * | 2021-01-25 | 2022-05-03 | 电子科技大学 | Wide-beam multi-dielectric composite resonator antenna based on directional diagram superposition |
| CN113111493A (en) * | 2021-03-18 | 2021-07-13 | 东莞理工学院 | N-arm Archimedes spiral antenna broadband multi-OAM vortex electromagnetic wave generation method |
| CN113111493B (en) * | 2021-03-18 | 2022-03-22 | 东莞理工学院 | N-arm Archimedes spiral antenna broadband multi-OAM vortex electromagnetic wave generation method |
| CN113708046A (en) * | 2021-08-01 | 2021-11-26 | 南通大学 | Miniaturized broadband circular polarization three-dimensional printing mixed dielectric resonator antenna |
| CN113708046B (en) * | 2021-08-01 | 2023-07-25 | 南通大学 | Miniaturized broadband circularly polarized three-dimensional printing hybrid medium resonator antenna |
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Application publication date: 20160120 |
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