CN106785408A - Broadband low section omnidirectional circular-polarized antenna - Google Patents
Broadband low section omnidirectional circular-polarized antenna Download PDFInfo
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- CN106785408A CN106785408A CN201710059993.3A CN201710059993A CN106785408A CN 106785408 A CN106785408 A CN 106785408A CN 201710059993 A CN201710059993 A CN 201710059993A CN 106785408 A CN106785408 A CN 106785408A
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- medium substrate
- zeroth order
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- parasitic radiation
- radial pattern
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
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Abstract
The present invention discloses a kind of broadband low section omnidirectional circular-polarized antenna, and medium substrate includes upper layer medium substrate and layer dielectric substrate, and upper layer medium substrate and layer dielectric substrate-parallel are set, and upper layer medium substrate is located at the surface of layer dielectric substrate；Metal floor is applied on layer dielectric substrate；Zero order resonator, parasitic radiator and radial pattern feeding network are applied in upper layer medium substrate；Radial pattern feeding network is located at the center of upper layer medium substrate；The zeroth order resonant patch ring of Zero order resonator is located at the outside of radial pattern feeding network, and one end of each zeroth order resonance pin of Zero order resonator is connected with 1 zeroth order resonant patch, and the other end is connected with metal floor；Parasitic radiation paster ring sets the outside of zeroth order resonant patch, and one end of each parasitic radiation pin of parasitic radiation paster is connected with 1 parasitic radiation paster, other end suspension；The present invention can increase antenna impedance and directional diagram bandwidth, and keep good axle ratio characteristic.
Description
Technical field
The present invention relates to omnidirectional circular-polarized antenna technical field, and in particular to broadband low section omnidirectional circular-polarized antenna.
Background technology
Circular polarized antenna is because with that can receive, any polarized wave (vice versa), left/right hand circular polarization ripple be orthogonal, radiated wave
It is rotationally symmetrical, can suppress sexual intercourse interference and obtain extensive use the features such as anti-multipath reflects.With omnidirectional radiation characteristic
Circular polarisation is more significant because of that can realize covering all around.However, omnidirectional circular-polarized antenna general at present, such as spiral
Dipole antenna, cylindrical conformal Antenna battle array, back-to-back antenna and monopole antenna etc. are all that structure (broad fire) is penetrated on side, because
And needs are disposed vertically and occupy larger space, it is impossible to the system suitable for much needing low section structure.Shen in our prior
Patent of invention " Zero order resonator and low section Zero order resonator omnidirectional circular-polarized antenna " (application number please:
201510522152.2) a kind of method that use Zero order resonator designs low section omnidirectional circular-polarized antenna is described in.It is this
Method provides a kind of practicable approach to design the omnidirectional circular-polarized antenna of low section, has great importance.But,
Zero order resonator quality factor higher are limited by, the frequency band of the circular polarized antenna that the application for a patent for invention is provided is narrower, only
7MHz (1541-1548MHz, 0.4%), so narrow frequency band limits its application in broadband system.
The content of the invention
To be solved by this invention is the narrower problem of frequency band of existing omnidirectional circular-polarized antenna, there is provided broadband is low to be cutd open
Face omnidirectional circular-polarized antenna.
To solve the above problems, the present invention is achieved by the following technical solutions：
Broadband low section omnidirectional circular-polarized antenna, including antenna body, the antenna body are humorous by medium substrate, zeroth order
Device, metal floor, radial pattern feeding network and the feed probes of shaking composition；Medium substrate includes upper layer medium substrate and layer dielectric
Substrate, upper layer medium substrate and layer dielectric substrate-parallel are set, and upper layer medium substrate is located at the surface of layer dielectric substrate；
Metal floor is applied on layer dielectric substrate；Zero order resonator and radial pattern feeding network are applied in upper layer medium substrate；
Radial pattern feeding network is located at the center of upper layer medium substrate；Zero order resonator is by the zeroth order resonant patch of more than 2 and 2
Zeroth order resonance pin composition above；Zeroth order resonant patch is identical with the quantity of zeroth order resonance pin；Zeroth order resonant patch ring sets
In the outside of radial pattern feeding network；One end of each zeroth order resonance pin is connected with 1 zeroth order resonant patch, the other end with gold
Possession plate connection；One end of feed probes is connected with the center of radial pattern feeding network, and the other end connects with feed；Its difference
Place is to still further comprise parasitic radiator；The parasitic radiator is applied in upper layer medium substrate；Parasitic radiator is by 2
Parasitic radiation paster above and the composition of the parasitic radiation pin of more than 2；The number of parasitic radiation paster and parasitic radiation pin
Amount is identical；Parasitic radiation paster ring sets the outside of zeroth order resonant patch；One end of each parasitic radiation pin and 1 parasitic radiation
Paster is connected, other end suspension.
In such scheme, broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：
Each parasitic radiation paster is one section of circular arc；All parasitic radiation paster head and the tail interval settings, and concentric and with radius ground
Surround 1 discontinuously annular；The center of the annular and the center superposition of radial pattern feeding network.
In such scheme, each zeroth order resonant patch is one section of circular arc；All zeroth order resonant patch head and the tail interval settings,
And concentric and 1 discontinuously annular is surrounded with radius；The center of the annular is heavy with the center of radial pattern feeding network
Close.
In such scheme, parasitic radiation paster is identical with the quantity of zeroth order resonant patch, and 1 parasitic radiation paster correspondence
It is located at 1 radial outside of zeroth order resonant patch.
In such scheme, all parasitic radiation pins are arranged between upper layer medium substrate and layer dielectric substrate, and
It is vertical with upper layer medium substrate and plane residing for layer dielectric substrate.
In such scheme, all zeroth order resonance pins are arranged between upper layer medium substrate and layer dielectric substrate, and
It is vertical with upper layer medium substrate and plane residing for layer dielectric substrate.
In such scheme, radial pattern feeding network is made up of the feed branch of more than 2；Each feed branch is by 1
Feed circular arc and 1 feed branch line are constituted；Feed circular arc is one section of circular arc, and feed branch line is one section of transmission line, feed circle
One end of arc is connected with the rear end of feed branch line, the front end of all feed branch lines with link together, form the radial pattern
The center of feeding network.
In such scheme, Zero order resonator, parasitic radiator and radial pattern feeding network are applied to upper layer medium substrate
Upper surface.
In such scheme, metal floor is applied to the lower surface of layer dielectric substrate.
Compared with prior art, the present invention has following features：
1) second resonant frequency has been encouraged using the parasitic radiation paster of circular arc in the periphery of zeroth order resonant patch,
So as to increase the impedance bandwidth of antenna；
2) vertical pin is connected in one end of parasitic radiation paster, increases the vertical radiation of antenna, improve antenna
Axial ratio bandwidth；
3) air dielectric is used between upper strata paster and subfloor, antenna Q values is reduced, so as to further increase antenna
Impedance bandwidth；
4) increase antenna impedance and directional diagram bandwidth using multiple technologies, and keep good axle ratio characteristic, realize wideband
The low section omnidirectional circular-polarized antenna of band；
5) antenna thickness is only 0.08 λ, the characteristics of with low section；
6) suitable for the system of broadband, low section, circular polarisation and omnidirectional radiation.
Brief description of the drawings
Fig. 1 is the stereogram of broadband low section omnidirectional circular-polarized antenna；
Fig. 2 is the top view of broadband low section omnidirectional circular-polarized antenna；
Fig. 3 is the upward view of broadband low section omnidirectional circular-polarized antenna；
Fig. 4 is the side view of broadband low section omnidirectional circular-polarized antenna；
Fig. 5 is the S11 curves of antenna embodiment；
Fig. 6 be antenna embodiment radiator plane axle than AR curve；
Fig. 7 is antenna pattern of the antenna embodiment in 1.37GHz；
Fig. 8 is antenna pattern of the antenna embodiment in 1.45GHz；
Fig. 9 is antenna pattern of the antenna embodiment in 1.50GHz；
Figure 10 is antenna pattern of the antenna embodiment in 1.58GHz.
Label in figure：1-1, zeroth order resonant patch；1-2, zeroth order resonance pin；2-1, parasitic radiation paster；2-2, parasitism
Radiation pin；3-1 upper layer medium substrates；3-2 layer dielectric substrates；4th, metal floor；5th, radial pattern feeding network；6th, feed is visited
Pin.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in detail, the present embodiment is with inventive technique side
Implemented under premised on case, given detailed implementation method and specific operation process, but protection scope of the present invention is not limited
In following embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Broadband low section omnidirectional circular-polarized antenna, as Figure 1-4, is situated between by Zero order resonator, parasitic radiator, upper strata
Matter substrate 3-1, layer dielectric substrate 3-2, metal floor 4, radial pattern feeding network 5 and feed probes 6 are constituted.
Antenna haves three layers medium, including the upper layer medium substrate 3-1 positioned at upper strata, the air layer positioned at intermediate layer and is located at
The layer dielectric substrate 3-2 of lower floor.The dielectric constant of upper layer medium substrate 3-1 and layer dielectric substrate 3-2 can any value, be situated between
The radius of matter substrate is rs=44mm, and the relative dielectric constant of medium substrate 3-1 and 3-2 is all 2.2 in the present embodiment.Upper strata
Medium substrate 3-1 is used to support zeroth order resonant patch 1-1, parasitic radiation paster 2-1 and radial pattern feeding network 5.Layer dielectric
Substrate 3-2 is used to support metal floor 4.Upper layer medium substrate 3-1 and layer dielectric substrate 3-2 are by shorting pin 1-2 and parasitism
The 2-2 supports of radiation pin.Intermediate layer is air layer, and thickness is h1=14mm.
Zero order resonator, parasitic radiator, metal floor 4, radial pattern feeding network 5 and feed probes 6 constitute antenna
Functional module.
Metal floor 4 is circular configuration, and radius is rg=27.7mm, is applied to the back side of layer dielectric substrate 3-2.
Zero order resonator is made up of 4 zeroth order resonant patch 1-1 and 4 zeroth order resonance pin 1-2.Each zeroth order resonance is pasted
Piece 1-1 is one section of circular arc.4 zeroth order resonant patch 1-1 are applied on upper layer medium substrate 3-1, and concentric and same half
Footpath forms a circle, and at intervals of g1=1mm between the head end and tail end of every 2 zeroth order resonant patch 1-1, thus constitutes 1 outward partly
Footpath is r1=28mm, and width is the incomplete annular discontinuously of W1=3mm.Each zeroth order resonant patch 1-1 is respectively provided with 1
Zeroth order resonance pin 1-2, zeroth order resonance pin 1-2 perpendicular to zeroth order resonant patch 1-1 and plane residing for metal floor 4, and
It is embedded into the air layer between upper layer medium substrate 3-1 and the basic 3-2 of layer dielectric.Zeroth order resonance pin 1-2 one end with it is every
Individual zeroth order resonant patch 1-1 is connected, and the other end is connected with metal floor 4.
Parasitic radiator is made up of 4 parasitic radiation paster 2-1 and 4 parasitic radiation pin 2-2.Each parasitic radiation is pasted
Piece 2-1 is one section of circular arc.4 parasitic radiation paster 2-1 be applied on upper layer medium substrate 3-1 and with zeroth order resonant patch
1-1 coplines, between the head end and tail end of every 2 parasitic radiation pasters 2-1 at intervals of g2=10mm, thus constitute 1 it is outer
Radius is r2=43.5mm, and width is the incomplete annular discontinuously of W2=2mm.Each parasitic radiation paster 2-1 respectively sets
There are 1 parasitic radiation pin 2-2, the parasitic radiation pin 2-2 to be embedded into upper strata perpendicular to plane residing for parasitic radiation paster
In air layer between medium substrate 3-1 and the basic 3-2 of layer dielectric.One end of parasitic radiation pin 2-2 and each parasitic spoke
Penetrate paster 2-1 to be connected, another section passes through layer dielectric substrate 3-2 and suspend.
Radial pattern feeding network 5 is applied on upper layer medium substrate 3-1, and positioned at the middle part of the antenna.Radial pattern feeds
Network 5 includes 4 feed branch of the distribution that is centrosymmetric.Each feed branch is made up of feed circular arc and feed branch line,
Feed circular arc is one section of circular arc, and feed branch line is one section of transmission line, and the rear end of one end and feed branch line for feeding circular arc connects
Connect, the front end of 4 feed branch lines links together, form 1 center of radial pattern feeding network 5.The width of feed branch line
It is W0=0.5mm to spend, and the radius for feeding circular arc is r0=10.8mm, and spacing is g0=4mm.
Incomplete annular and parasitic radiation paster 2- that radial pattern feeding network 5, zeroth order resonant patch 1-1 are constituted
The 1 incomplete annular three's concentric for being constituted, the center in the center of circle is the center of antenna.Feed probes 6 are located at day
The center of line, perpendicular to feed branch and plane residing for metal floor 4, and is embedded into upper layer medium substrate 3-1 with lower floor Jie
In air layer between the basic 3-2 of matter.The one end of feed probes 6 is connected with the center of radial pattern feeding network 5, and one end passes through metal
Floor 4 connects with the feed of bottom.
Fig. 5 is the S11 curves of antenna embodiment.Typically, if S11 of the antenna in a certain frequency range is less than -10dB, then it is assumed that
Antenna is good in frequency range internal impedance matching, and the band bandwidth is the impedance bandwidth of antenna.Embodiment antenna is in 1.37-
S11 is less than -10dB in the range of 1.69GHz, and matching is good；Therefore, embodiment antenna has the impedance bandwidth of 320MHz, i.e.,
20.9% impedance bandwidth (relatively with centre frequency 1.53GHz).
Fig. 6 be antenna embodiment radiator plane axle than AR curve.Typically, if axle of the antenna in a certain frequency range compares AR
Less than 3dB, then it is assumed that antenna has good circular polarization characteristics in the frequency range, the band bandwidth is the axial ratio bandwidth of antenna.
Embodiment antenna AR in the range of 1.26-1.58GHz is less than 3dB, and circular polarization characteristics are good；Therefore embodiment antenna has
The axial ratio bandwidth (relatively with centre frequency 1.42GHz) of the axial ratio bandwidth of 320MHz, i.e., 22.5%.
From Fig. 5 and Fig. 6, embodiment antenna in the range of 1.37-1.58GHz, i.e., with good impedance matching,
With good circular polarization characteristics；Therefore the working band of antenna is the bandwidth of operation of 210MHz, i.e., 14.2%.
Fig. 7, Fig. 8, Fig. 9 and Figure 10 are respectively antenna embodiment in 1.37GHz, 1.45GHz, 1.50GHz and 1.58GHz
Antenna pattern.A is the directional diagram in xy faces in each figure, and B is the directional diagram in xz faces.As seen from the figure, antenna embodiment is at these
The right-handed circular polarization ripple of frequency all radiates right-handed circular polarization ripple much larger than left-hand circular polarization ripple, i.e. antenna in whole frequency range.My god
It is the circular direction of omnidirectional in x/y plane that line embodiment all has similar directional diagram, i.e. antenna embodiment in these frequencies
Figure, is dumb-bell shape directional diagram in xz planes.Therefore, antenna embodiment has good omnidirectional radiation characteristic in whole frequency range.
The gain of antenna embodiment is about 1.24-1.56dBi in whole frequency range.
The present invention relates to omnidirectional circular-polarized antenna technical field.A kind of omnidirectional's entelechy with broadband, low section is provided
Change antenna.The present invention constitutes ring array using four new Zero order resonators, obtains the circularly polarised wave of omnidirectional radiation；And with sky
Gas medium obtains low Q values so as to increase bandwidth；Meanwhile, the ring array constituted using four parasitic radiation pasters is further increased
Bandwidth, and polarization characteristic is improved with parasitic radiation pin, so that antenna obtains good circular polarization characteristics in wider frequency section.This
The designed antenna of invention is applicable in the system of low section omnidirectional circular-polarized antenna.
Finally it should be noted that the design parameter in the embodiment is merely to the invention for clearly stating inventor is tested
Card process, is not intended to limit scope of patent protection of the invention；Although having been carried out in detail to the present invention with reference to foregoing embodiments
Describe in detail it is bright, it will be understood by those within the art that：It still can be to the technical scheme described in foregoing embodiments
Modify, or equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, do not make
The essence of appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. broadband low section omnidirectional circular-polarized antenna, including antenna body, the antenna body is by medium substrate, zeroth order resonance
Device, metal floor (4), radial pattern feeding network (5) and feed probes (6) composition；
Medium substrate includes upper layer medium substrate (3-1) and layer dielectric substrate (3-2), upper layer medium substrate (3-1) and lower floor
Medium substrate (3-2) be arranged in parallel, and upper layer medium substrate (3-1) is located at the surface of layer dielectric substrate (3-2)；
Metal floor (4) is applied on layer dielectric substrate (3-2)；
Zero order resonator and radial pattern feeding network (5) are applied in upper layer medium substrate (3-1)；Radial pattern feeding network (5)
Positioned at the center of upper layer medium substrate (3-1)；Zero order resonator is by the zeroth order resonant patch (1-1) of more than 2 and more than 2
Zeroth order resonance pin (1-2) composition；Zeroth order resonant patch (1-1) is identical with the quantity of zeroth order resonance pin (1-2)；Zeroth order is humorous
Paster (1-1) ring that shakes is located at the outside of radial pattern feeding network (5)；One end of each zeroth order resonance pin (1-2) and 1 zeroth order
Resonant patch (1-1) is connected, and the other end is connected with metal floor (4)；
One end of feed probes (6) is connected with the center of radial pattern feeding network (5), and the other end connects with feed；
It is characterized in that：
Still further comprise parasitic radiator；The parasitic radiator is applied in upper layer medium substrate (3-1)；Parasitic radiator by
The parasitic radiation paster (2-1) of more than 2 and the composition of the parasitic radiation pin (2-2) of more than 2；Parasitic radiation paster (2-1)
Quantity with parasitic radiation pin (2-2) is identical；Parasitic radiation paster (2-1) ring sets the outside of zeroth order resonant patch (1-1)；Often
One end of individual parasitic radiation pin (2-2) is connected with 1 parasitic radiation paster (2-1), other end suspension.
2. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：Each parasitic radiation is pasted
Piece (2-1) is one section of circular arc；All parasitic radiation paster (2-1) head and the tail interval settings, and concentric and surround 1 with radius
Individual discontinuously annular；The center of the annular and the center superposition of radial pattern feeding network (5).
3. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：Each zeroth order resonance is pasted
Piece (1-1) is one section of circular arc；All zeroth order resonant patch (1-1) head and the tail interval settings, and concentric and surround 1 with radius
Individual discontinuously annular；The center of the annular and the center superposition of radial pattern feeding network (5).
4. the broadband low section omnidirectional circular-polarized antenna according to any one in claim 1-3, it is characterised in that：Post
Raw radiation patch (2-1) is identical with the quantity of zeroth order resonant patch (1-1), and 1 parasitic radiation paster (2-1) is correspondingly arranged at 1
The radial outside of individual zeroth order resonant patch (1-1).
5. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：All parasitic radiation pins
Nail (2-2) be arranged between upper layer medium substrate (3-1) and layer dielectric substrate (3-2), and with upper layer medium substrate (3-1)
It is vertical with plane residing for layer dielectric substrate (3-2).
6. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：All zeroth order resonance pins
Nail (1-2) be arranged between upper layer medium substrate (3-1) and layer dielectric substrate (3-2), and with upper layer medium substrate (3-1)
It is vertical with plane residing for layer dielectric substrate (3-2).
7. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：Radial pattern feeding network
(5) it is made up of the feed branch of more than 2；Each feed branch is constituted by 1 feed circular arc and 1 feed branch line；Feedback
Electric circular arc is one section of circular arc, and feed branch line is one section of transmission line, and the one end for feeding circular arc is connected with the rear end of feed branch line,
The front end of all feed branch lines with link together, form the center of the radial pattern feeding network (5).
8. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：Zero order resonator, post
Raw radiator and radial pattern feeding network (5) are applied to the upper surface of upper layer medium substrate (3-1).
9. broadband low section omnidirectional circular-polarized antenna according to claim 1, it is characterised in that：Metal floor (4) is applied
It is affixed on the lower surface of layer dielectric substrate (3-2).
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| CN201710059993.3A CN106785408B (en) | 2017-01-24 | 2017-01-24 | Broadband low-profile omnidirectional circularly polarized antenna |
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| CN201710059993.3A CN106785408B (en) | 2017-01-24 | 2017-01-24 | Broadband low-profile omnidirectional circularly polarized antenna |
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| CN107978861A (en) * | 2017-12-14 | 2018-05-01 | 南京航空航天大学 | A kind of low section omnidirectional left-right-hand circular polarization reconfigurable antenna |
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