CN109193125A - Single feedback circularly polarized dielectric resonator antenna - Google Patents
Single feedback circularly polarized dielectric resonator antenna Download PDFInfo
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- CN109193125A CN109193125A CN201810862191.0A CN201810862191A CN109193125A CN 109193125 A CN109193125 A CN 109193125A CN 201810862191 A CN201810862191 A CN 201810862191A CN 109193125 A CN109193125 A CN 109193125A
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- 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
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Abstract
The invention discloses a kind of single feedback circularly polarized dielectric resonator antennas, it include: medium substrate, the lower surface of the medium substrate is provided with microstrip line, and upper surface is provided with the big stratum of metal, and the big stratum of metal is offered for cooperating the coupling slot for carrying out couple feed with microstrip line；Top layer radiating element, including the hollow two-layered medium resonator of a tape dielectric resonator and one；Wherein, two-layered medium resonator is set on the big stratum of metal and covers the coupling slot；Tape dielectric resonator is set on the big stratum of the metal, and it is located at the hollow area in the two-layered medium resonator, wherein, the tape dielectric resonator is certainly perpendicular to the direction of microstrip line, the predetermined angle that rotates in an anti-clockwise direction around center point along visual angle from top to down is formed in the horizontal plane, to realize the conversion from line polarization wave to circularly polarised wave.Antenna of the invention gain with higher, low section and wider bandwidth of operation.
Description
Technical field
The present invention relates to field of antenna more particularly to a kind of single feedback circularly polarized dielectric resonator antennas.
Background technique
Circularly polarized dielectric resonator antenna (Dielectric Resonator Antenna, DRA) have radiation efficiency it is high,
Flexible design and the interference of anti-misty rain and the advantages that multipath effect, satellite communication, navigation, in terms of with wide
Application prospect.
In recent years, antenna researcher both domestic and external has put into a large amount of research to circularly polarized dielectric resonator antenna.One
As, there are two types of the feeding schemes for generating circularly polarised wave, is single feed point and multiple feeds technology respectively.The wherein DRA of more feeding points
With broader axial ratio bandwidth, but additional feeding network need to be used, structure is relative complex.And the DRA structure of single feeding point
Simply, but usually axial ratio bandwidth is relatively narrow, can expand its axial ratio bandwidth there are many technological means, such as special shape can be used
DR, but the antenna of this irregular shape is not easy to processing and manufacturing and is also difficult to go to analyze with traditional theory；Amplification DR's grows tall
Than or the ratio of width to height can also increase axial ratio bandwidth, but the problem of this method is brought is the size for increasing antenna；Using changing
Into feeding technique be also a kind of effective ways for broadening axial ratio bandwidth, but frequently with the medium of low-k in this kind of design
Material is lower so as to cause gain.
Modern wireless communication systems for cramped construction, broadband, high-gain performance antenna demand it is very urgent.
Therefore, it is necessary to one kind have broadband (for circular polarized antenna, axial ratio bandwidth determines the overall work bandwidth of antenna) and
Single feedback circularly polarized dielectric resonator antenna of high-gain feature.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of single feedback circular polarisation for the demand of the prior art
Medium resonator antenna.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of single feedback circularly polarized dielectric resonator day
Line, comprising:
Medium substrate, the lower surface of the medium substrate are provided with microstrip line, and upper surface is provided with the big stratum of metal, described
The big stratum of metal is offered for cooperating the coupling slot for carrying out couple feed with the microstrip line；
Top layer radiating element, including the hollow two-layered medium resonator of a tape dielectric resonator and one；Wherein, institute
Two-layered medium resonator is stated to be set on the big stratum of metal and cover the coupling slot；The tape dielectric resonator is set to institute
The hollow area stated on the big stratum of metal, and be located in the two-layered medium resonator, wherein the tape dielectric resonator is certainly
Perpendicular to the direction of microstrip line, preset angle is rotated in an anti-clockwise direction along visual angle from top to down around center point in the horizontal plane
Degree is formed, to realize the conversion from line polarization wave to circularly polarised wave.
In antenna of the present invention, the two-layered medium resonator include hollow medium plate and be located at hollow Jie
Ceramic thin plate above scutum, the square frame shaped of hollow medium plate, the square plate of ceramic thin plate, and it is empty
The floor projection of heart dielectric-slab and ceramic thin plate is overlapped, and the dielectric constant of the ceramic thin plate is higher than Jie of the hollow medium plate
Electric constant.
In antenna of the present invention, the coupling slot is set to the center on the big stratum of metal, the medium substrate, gold
Belong to the center overlapping of axles on antenna thickness direction on big stratum, coupling slot, tape dielectric resonator, two-layered medium resonator,
The floor projection on the big stratum of the medium substrate, metal is rectangle and the floor projection of the two is overlapped, the coupling slot, double
The floor projection of layer dielectric resonator is square and is located in the floor projection of the medium substrate.
In antenna of the present invention, centre bit of the microstrip line from the short side of the lower surface of the medium substrate
It sets, is extended to form along the direction for being parallel to long side.
Single feedback circularly polarized dielectric resonator antenna of the invention, has the advantages that antenna of the invention, top layer spoke
Penetrating unit includes a tape dielectric resonator and a hollow two-layered medium resonator, and tape dielectric resonator is located at described
Hollow area in two-layered medium resonator, and it is from the direction perpendicular to microstrip line, in the horizontal plane around center point edge
The predetermined angle that rotates in an anti-clockwise direction at visual angle is formed from top to down, and two-layered medium resonator both can be used as a radiation of antenna
Tape dielectric resonator can be packaged in the antenna structure for wherein forming a low section by unit again；Further, two-layered medium
The dielectric constant of ceramic thin plate in resonator is normal much higher than the dielectric of hollow medium plate, so that the radiation of antenna is mainly by medium
Resonator side radiation and non-top is contributed, to obtain higher radiation gain, come from tape dielectric resonator and sky
Two kinds of modes of resonance of the two-layered medium resonator of the heart are merged to form wider bandwidth of operation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings:
Fig. 1 is the structural schematic diagram of inventive antenna；
Fig. 2 is the decomposition diagram of inventive antenna；
Fig. 3 is field distribution of the antenna on two Frequency points；
Fig. 4 is that antenna emulates to obtain | S11 | figure；
Fig. 5 is axis ratio and the gain of antenna emulation；
Fig. 6 is antenna pattern of the antenna in the face x-z and y-z plane.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give exemplary embodiments of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that term as used herein " vertical ", "horizontal" and similar statement simply to illustrate that
Purpose.Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The total thinking of the present invention is: the top layer radiating element of the single feedback circularly polarized dielectric resonator antenna of design includes a band
Dielectric resonator and a hollow two-layered medium resonator, wherein two-layered medium resonator is set on the big stratum of metal simultaneously
Positioned at the hollow area of the two-layered medium resonator, wherein the tape dielectric resonator from perpendicular to microstrip line direction,
The predetermined angle that rotates in an anti-clockwise direction around center point along visual angle from top to down is formed in the horizontal plane.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application
The detailed description of technical solution, rather than the restriction to technical scheme, in the absence of conflict, the present invention are implemented
Technical characteristic in example and embodiment can be combined with each other.
With reference to Fig. 1, single feedback circularly polarized dielectric resonator antenna in a specific embodiment includes:
Medium substrate 1, the lower surface of the medium substrate 1 are provided with microstrip line 11, and upper surface is provided with the big stratum of metal
12, the big stratum 12 of metal is etched with for cooperating the coupling slot 120 for carrying out couple feed with the microstrip line 11.For example,
Medium substrate 1 in the present embodiment is using playing a supportive role with 5880 (ε of Rogersrδ=0.0009=2.2, tan)
For the substrate of material, with a thickness of h.
Top layer radiating element 2, including the hollow two-layered medium resonator 22 of a tape dielectric resonator 21 and one；Its
In, the two-layered medium resonator 22 is set on the big stratum 12 of metal and covers the coupling slot；The tape dielectric resonance
Device 21 is set on the big stratum 12 of the metal, and the hollow area being located in the two-layered medium resonator 22.
Specifically, the coupling slot 120 is set to the center on the big stratum 12 of metal, the medium substrate 1, the big stratum of metal
12, the center overlapping of axles on antenna thickness direction of coupling slot 120, tape dielectric resonator 21, two-layered medium resonator 22,
The floor projection on the big stratum 12 of the medium substrate 1, metal is rectangle and the floor projection of the two is overlapped, the microstrip line
11, from the center of the short side of the lower surface of the medium substrate 1, extend to form along the direction for being parallel to long side.The coupling
Slot 120, two-layered medium resonator 22 floor projection it is square and be located at the medium substrate 1 floor projection in.
More specifically, the tape dielectric resonator 21 is using with a thickness of hs, using high dielectric constant εr1Ceramic material
Material, from the direction perpendicular to microstrip line 11, the counter clockwise direction around center point along visual angle from top to down turns in the horizontal plane
The θ ° of formation of dynamic predetermined angle.If establishing 0xyz coordinate system as follows: the central point with tape dielectric resonator 21 is
Origin, antenna plate thickness direction are z-axis, are the positive direction of z-axis from the direction that microstrip line 11 is directed toward top layer radiating element 2；Medium
The longitudinal direction of substrate 1 is to be parallel to the direction of microstrip line 11, is x-axis, and towards the side of microstrip line 11 be positive direction of the x-axis；
The short side direction of medium substrate 1 is the direction perpendicular to microstrip line 11, is y-axis, and see from top to down, x-axis is rotated by 90 ° counterclockwise
Reach y-axis position.Then, tape dielectric resonator 21 is equivalent to from the position for being parallel to y-axis, rotates θ ° of shape of predetermined angle around origin
At, and direction of rotation is to rotate along positive direction of the y-axis toward negative direction of the x-axis.
More specifically, the two-layered medium resonator 22 includes hollow medium plate 221 based on Teflon material and is located at
Ceramic thin plate 222 above the hollow medium plate, the dielectric constant of ceramic thin plate 222 are εr1, with a thickness of ht1, described hollow
The square frame shaped of dielectric-slab 221, the square plate of ceramic thin plate, and hollow medium plate 221 and ceramic thin plate 222
Floor projection be overlapped, the dielectric constant of the ceramic thin plate 222 is higher than the dielectric constant of the hollow medium plate 221.It is a kind of
In feasible embodiment, the detailed design parameter of antenna is listed in table 1.
The detailed design parameter of 1 antenna of table
The working principle of the wide band high-gain of the lower surface analysis antenna.Tape dielectric resonator 21 is placed with suitable θ °
In realizing the conversion from line polarization wave to circularly polarised wave on coupling slot 120.Then it is originated from the entelechy of tape dielectric resonator 21
Change wave can motivate top be laminated two-layered medium resonator 22, the mode of resonance of two-layered medium resonator 22 can have been motivated and
The working band of bimodulus is formed with the Mode Coupling of tape dielectric resonator 21.On the other hand, hollow two-layered medium resonator
22 characteristic compared with the dielectric resonator of conventional uniform medium with low reactance-resistance ratio and high-gain.Wherein, low reactance-resistance ratio is due to working as
When the hollow medium plate 221 of low-k is embedded between high dielectric constant layer and ground, electric field line is forced through low dielectric
Constant section leads to the reduction of Q value.Moreover, because the hollow medium of the ceramic thin plate 222 of high dielectric constant and low-k
High reflection between plate 221, so that the radiation of two-layered medium resonator 22 is mainly the side wall from it rather than upper wall, because
The gain of this antenna is higher.
In order to analyze the operating mode of the antenna, Fig. 3 gives the field distribution on two Frequency points.It is low as can be seen
As long as TE of the mode of resonance of frequency from tape DR111Mode, it is (b) 11GHz that (a), which is 9GHz, in figure, and the resonance of high frequency
Mode is the mould TE three times from two-layered medium resonator131。
Fig. 4 gives the reflection coefficient of this antenna emulation, can obtain the impedance bandwidth of 40% (8.1GHz-12.2GHz).
Fig. 5 gives axis ratio (axial ratio, the AR) performance and gain of the emulation of this antenna, and 3-dB AR bandwidth is 28.9%, from
8.6GHz to 11.5GHz, the maximum gain in are 10.2dBi.Fig. 6 gives the antenna under two kinds of frequencies of 9GHz and 11GHz
The antenna pattern of emulation, it is (b) 11GHz, two, left side figure is the face x-z, and two, the right figure is y-z that (a), which is 9GHz, in figure
Face, show antenna has good radiance in frequency range.
In conclusion single feedback circularly polarized dielectric resonator antenna of the invention, has the advantages that day of the invention
Line, top layer radiating element include a tape dielectric resonator and a hollow two-layered medium resonator, tape dielectric resonance
Device is located at the hollow area in the two-layered medium resonator, and it is from the direction perpendicular to microstrip line, in the horizontal plane around certainly
Rotate in an anti-clockwise direction predetermined angle of the body central point along visual angle from top to down is formed, and two-layered medium resonator both can be used as antenna
A radiating element tape dielectric resonator can be packaged in the antenna structure for wherein forming a low section again；Further
The dielectric constant on ground, the ceramic thin plate in two-layered medium resonator is normal much higher than the dielectric of hollow medium plate, so that the spoke of antenna
Penetrate mainly by dielectric resonator side radiation and non-top is contributed, to obtain higher radiation gain, be situated between from tape
Two kinds of modes of resonance of matter resonator and hollow two-layered medium resonator are merged to form wider bandwidth of operation.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (4)
1. a kind of single feedback circularly polarized dielectric resonator antenna characterized by comprising
Medium substrate, the lower surface of the medium substrate are provided with microstrip line, and upper surface is provided with the big stratum of metal, the metal
Big stratum is offered for cooperating the coupling slot for carrying out couple feed with the microstrip line；
Top layer radiating element, including the hollow two-layered medium resonator of a tape dielectric resonator and one；Wherein, described double
Layer dielectric resonator is set on the big stratum of metal and covers the coupling slot；The tape dielectric resonator is set to the gold
The hollow area for belonging on big stratum, and being located in the two-layered medium resonator, wherein the tape dielectric resonator is from vertical
In the direction of microstrip line, predetermined angle shape is rotated in an anti-clockwise direction along visual angle from top to down around center point in the horizontal plane
At.
2. antenna according to claim 1, which is characterized in that the two-layered medium resonator includes hollow medium plate and position
Ceramic thin plate above the hollow medium plate, the square frame shaped of hollow medium plate, the ceramic thin plate is in just
Rectangular plate, and the floor projection of hollow medium plate and ceramic thin plate is overlapped, the dielectric constant of the ceramic thin plate is higher than described
The dielectric constant of hollow medium plate.
3. antenna according to claim 1, which is characterized in that the coupling slot is set to the center on the big stratum of metal, institute
State the big stratum of medium substrate, metal, coupling slot, tape dielectric resonator, two-layered medium resonator along antenna thickness direction
Center overlapping of axles, the floor projection on the big stratum of the medium substrate, metal be rectangle and the floor projection of the two be overlapped,
The coupling slot, two-layered medium resonator floor projection it is square and be located at the medium substrate floor projection in.
4. antenna according to claim 3, which is characterized in that the microstrip line is short from the lower surface of the medium substrate
The center on side is extended to form along the direction for being parallel to long side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810862191.0A CN109193125B (en) | 2018-08-01 | 2018-08-01 | Single-feed circularly polarized dielectric resonator antenna |
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| CN201810862191.0A CN109193125B (en) | 2018-08-01 | 2018-08-01 | Single-feed circularly polarized dielectric resonator antenna |
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| CN109193125B CN109193125B (en) | 2020-09-08 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247186A (en) * | 2019-06-21 | 2019-09-17 | 西安电子科技大学 | A kind of broad beam medium resonator antenna |
| CN110401021A (en) * | 2019-07-29 | 2019-11-01 | 华东交通大学 | A kind of dielectric resonator filter antenna |
| CN110416713A (en) * | 2019-08-27 | 2019-11-05 | 北京邮电大学 | A kind of broadband two dimensional beam scanning dielectric resonator antenna and wireless communication system |
| CN110854521A (en) * | 2019-11-27 | 2020-02-28 | 南通大学 | Annular dielectric resonator broadband quasi-yagi antenna based on metal ring loading |
| CN111710980A (en) * | 2020-06-23 | 2020-09-25 | 南京信息工程大学 | Multi-arc microstrip dielectric resonant cavity antenna based on 3D printing technology |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN111969313A (en) * | 2020-08-17 | 2020-11-20 | 南通大学 | High-gain differential dual-polarized antenna based on hollow dielectric patch resonator |
| CN112271438A (en) * | 2020-10-23 | 2021-01-26 | 汕头大学 | Slot-fed circularly polarized omnidirectional dielectric resonator antenna |
| CN113036438A (en) * | 2021-03-23 | 2021-06-25 | 南通大学 | Broadband low-profile dielectric resonator antenna for beamforming application |
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| CN110247186B (en) * | 2019-06-21 | 2021-01-01 | 西安电子科技大学 | Wide-beam dielectric resonator antenna |
| CN110247186A (en) * | 2019-06-21 | 2019-09-17 | 西安电子科技大学 | A kind of broad beam medium resonator antenna |
| CN110401021A (en) * | 2019-07-29 | 2019-11-01 | 华东交通大学 | A kind of dielectric resonator filter antenna |
| CN110416713A (en) * | 2019-08-27 | 2019-11-05 | 北京邮电大学 | A kind of broadband two dimensional beam scanning dielectric resonator antenna and wireless communication system |
| CN110416713B (en) * | 2019-08-27 | 2021-05-04 | 北京邮电大学 | Broadband two-dimensional beam scanning medium resonant antenna and wireless communication system |
| CN110854521A (en) * | 2019-11-27 | 2020-02-28 | 南通大学 | Annular dielectric resonator broadband quasi-yagi antenna based on metal ring loading |
| CN110854521B (en) * | 2019-11-27 | 2021-07-27 | 南通大学 | Annular dielectric resonator broadband quasi-yagi antenna based on metal ring loading |
| CN111710980A (en) * | 2020-06-23 | 2020-09-25 | 南京信息工程大学 | Multi-arc microstrip dielectric resonant cavity antenna based on 3D printing technology |
| CN111710980B (en) * | 2020-06-23 | 2023-03-10 | 南京信息工程大学 | Multi-arc microstrip dielectric resonant cavity antenna based on 3D printing technology |
| CN111969313A (en) * | 2020-08-17 | 2020-11-20 | 南通大学 | High-gain differential dual-polarized antenna based on hollow dielectric patch resonator |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN112271438A (en) * | 2020-10-23 | 2021-01-26 | 汕头大学 | Slot-fed circularly polarized omnidirectional dielectric resonator antenna |
| CN113036438A (en) * | 2021-03-23 | 2021-06-25 | 南通大学 | Broadband low-profile dielectric resonator antenna for beamforming application |
| CN113036438B (en) * | 2021-03-23 | 2022-12-06 | 南通大学 | Broadband low-profile dielectric resonator antenna for beamforming application |
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