CN107026316A - Circularly polarized dielectric resonator antenna and its parameter determination method and communication equipment - Google Patents
Circularly polarized dielectric resonator antenna and its parameter determination method and communication equipment Download PDFInfo
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- CN107026316A CN107026316A CN201610069431.2A CN201610069431A CN107026316A CN 107026316 A CN107026316 A CN 107026316A CN 201610069431 A CN201610069431 A CN 201610069431A CN 107026316 A CN107026316 A CN 107026316A
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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
- H01Q1/36—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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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Abstract
The embodiment of the invention discloses a kind of circularly polarized dielectric resonator antenna and its parameter determination method and communication equipment, the antenna includes：Medium substrate, including first surface and the second surface positioned at the first surface back side；The first surface is provided with metal floor；Dielectric resonator, is contacted with the metal floor, for radiating wireless signal, and is operated in first band；Gap, on the metal floor, for radiating wireless signal, and is operated in second band；Wherein, the first band is at least partly different with the second band, and is collectively forming the 3rd frequency band；3rd frequency band is sequential frequency band；The circularly polarized dielectric resonator antenna is operated in return loss during three frequency band, more than designated value；Feeder line, positioned at the second surface, is coupled with the dielectric resonator and the annulus respectively, for making the dielectric resonator and the gap carry out circular polarization radiation respectively.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of circularly polarized dielectric resonator antenna and its parameter it is true
Determine method and communication equipment.
Background technology
In existing mobile communication, the working frequency range of communication equipment is concentrated mainly on below 3GHz, and this causes frequency
Spectrum resource is very crowded, and in high band (such as millimeter wave, centimeter wave frequency range) available frequency higher than 3GHz
Spectrum resource enriches, and can effectively alleviate the nervous present situation of frequency spectrum resource, it is possible to achieve high speed short haul connection,
Support the demand in terms of 5G capacity and transmission rate.But in millimeter wave and submillimeter wave frequency range, metal
The conductor losses of antenna is very serious, causes the radiation efficiency of antenna very low.Due in the absence of conductor losses and table
Face ripple loss, the radiation efficiency of dielectric resonator antenna is very high, and more than 95% is can reach in millimere-wave band.Therefore,
Dielectric resonator antenna is of great interest and studies.Dielectric resonator antenna (Dielectric Resonator
Antenna, abbreviation DRA) generally bandwidth of operation it is narrower, the circularly polarized dielectric of especially SF single feed mode is humorous
Shake antenna.Bandwidth lifting is a main direction of studying of dielectric resonator antenna.
The content of the invention
In view of this, the embodiment of the present invention expects that providing a kind of circularly polarized dielectric resonator antenna and its parameter determines
Method and communication equipment, at least partly solve the problem of circularly polarized dielectric resonator antenna bandwidth is small.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
First aspect of the embodiment of the present invention provides a kind of circularly polarized dielectric resonator antenna, and the circularly polarized dielectric is humorous
The antenna that shakes includes：
Medium substrate, including first surface and the second surface positioned at the first surface back side；Described first
Surface is provided with metal floor；
Dielectric resonator, is contacted with the metal floor, for radiating wireless signal, and is operated in the first frequency
Band；
Gap, on the metal floor, for radiating wireless signal, and is operated in second band；Its
In, the first band is at least partly different with the second band, and collectively constitutes the 3rd frequency band；It is described
3rd frequency band is sequential frequency band；The circularly polarized dielectric resonator antenna is operated in echo during three frequency band
Loss, more than designated value；
Feeder line, positioned at the second surface, respectively with the dielectric resonator and the slot-coupled, is used for
The dielectric resonator and the gap is set to carry out circular polarization radiation respectively.
Based on such scheme, the dielectric resonator is the resonator with degeneracy mode of operation.
Based on such scheme, the form of the dielectric resonator is cylinder or cuboid.
Based on such scheme, the gap is annulus.
Based on such scheme, the annulus is Axisymmetrical Ring gap.
Based on such scheme, the antenna also includes：Feed port and matching network；
The feed port is connected by the matching network with the feeder line；
Wherein, the matching network is used for the impedance matching of the circularly polarized dielectric resonator antenna.
Based on such scheme, the feeder line includes L-shaped microstrip line.
Based on such scheme, the geometric center for the one side that the dielectric resonator is contacted with the metal floor and
The geometric center in the gap is overlapping.
Second aspect of the embodiment of the present invention provides a kind of communication equipment, and the communication equipment includes：As described above
Circularly polarized dielectric resonator antenna.
The third aspect of the embodiment of the present invention provides a kind of parameter determination method of circularly polarized dielectric resonator antenna, institute
The method of stating includes：
Dielectric resonator and at least one of physical parameter in gap are adjusted, the dielectric resonator is worked
In first band and make the gap radiation wireless signal and be operated in second band；Wherein, first frequency
Band and second band collectively constitute the 3rd frequency band, and the 3rd frequency band is sequential frequency band；The circularly polarized dielectric
Resonant antenna is operated in return loss during three frequency band, more than designated value；
The physical parameter of feeder line is adjusted, the dielectric resonator and the gap is carried out circular polarization radiation respectively.
Based on such scheme, the gap is annulus；
The adjustment dielectric resonator and at least one of physical parameter in gap, make the dielectric resonator
It is operated in first band and makes the gap radiation wireless signal and be operated in second band, including：
Determine the physical parameter and first resonant frequency of the dielectric resonator；Wherein, described first is humorous
Vibration frequency is the resonance frequency band of the first band；
According to first resonant frequency, estimation obtains the second resonance estimation frequency of annulus；
Based on the second resonance estimation frequency, the estimation parameter of the annulus is determined；
Physical parameter and the estimation parameter based on the dielectric resonator, to the circularly polarized dielectric resonance
Antenna is emulated, and obtains simulation result；
According to the simulation result, the physical parameter of the annulus is determined.
Based on such scheme, the physical parameter of the adjustment feeder line makes the dielectric resonator and the gap
Circular polarization radiation is carried out respectively, including：Adjust L microstrip lines physical parameter, make the dielectric resonator and
The gap carries out circular polarization radiation respectively.
Circularly polarized dielectric resonator antenna provided in an embodiment of the present invention and its parameter determination method and communication equipment,
The radiation of signal will be carried out, and make dielectric resonator pair simultaneously using dielectric resonator and gap as radiant body
The first band answered second band corresponding with gap is at least partly different, and makes first band and second band
The sequential frequency band that return loss is respectively less than designated value is collectively forming, i.e., described 3rd frequency band.3rd frequency band correspondence
Band it is roomy, and the circularly polarized dielectric resonator antenna so formed simple in construction and the characteristics of make simple.
Brief description of the drawings
Fig. 1 to Fig. 3 is the structural representation of circularly polarized dielectric resonator antenna provided in an embodiment of the present invention；
Fig. 4 is imitative for circularly polarized dielectric resonator antenna return loss frequency response curve provided in an embodiment of the present invention
True and actual measurement schematic diagram；
Fig. 5 emulates for the axle of circularly polarized dielectric resonator antenna provided in an embodiment of the present invention than frequency response curve
With actual measurement schematic diagram；
Fig. 6 is circularly polarized dielectric resonator antenna provided in an embodiment of the present invention in the radiation side of three different frequent points
To emulation and actual measurement schematic diagram；
Fig. 7 is that a kind of parameter of circularly polarized dielectric resonator antenna provided in an embodiment of the present invention determines that flow is illustrated
Figure；
Fig. 8 is a kind of flow for the physical parameter for adjusting dielectric resonator and gap provided in an embodiment of the present invention
Schematic diagram；
Fig. 9 determines that flow is shown for the parameter of another circularly polarized dielectric resonator antenna provided in an embodiment of the present invention
It is intended to；
Figure 10 is the internal diameter R and circular polarized antenna of a kind of annular slot provided in an embodiment of the present invention at each
The axle of frequency band than relation schematic diagram.
Embodiment
Technical scheme is done below in conjunction with Figure of description and specific embodiment and further explained in detail
State.
As depicted in figs. 1 and 2, a kind of circularly polarized dielectric resonator antenna, the entelechy are present embodiments provided
Changing dielectric resonator antenna includes：
Medium substrate 1, including first surface and the second surface positioned at the first surface back side；Described
One surface is provided with metal floor 2；
Dielectric resonator 3, is contacted with the metal floor 2, for radiating wireless signal, and is operated in
One frequency band；
Gap 4, on the metal floor 2, for radiating wireless signal, and is operated in second band；
Wherein, the first band and the second band collectively constitute the 3rd frequency band；3rd frequency band is continuous
Frequency band；The circularly polarized dielectric resonator antenna is operated in return loss during three frequency band, more than specified
Value；The gap 4 can be the variously-shaped gaps such as strip slot, preferably can be as schemed in the present embodiment
Annulus shown in 1 and Fig. 2；
Feeder line 5, positioned at the second surface, is coupled with the dielectric resonator 3 and the gap 4 respectively,
For making the dielectric resonator 3 and the gap 4 carry out circular polarization radiation respectively.
The medium basic 1 is plate-like, for example, the medium basic 1 can be rectangular slab, or square plate.
In 6 surfaces of the medium substrate 1, larger two faces of surface area are usually first described in the present embodiment
Surface and second surface.Cut the first surface and second surface positive and negative each other.It is being situated between in the present embodiment
The first surface of matter substrate 1 is provided with metal floor 2.The metal floor 2 can be laminating or plating in institute
The metal level stated on medium substrate 1 is constituted, and is connected with the earth point in antenna or equipment, therefore is also known as grounded
Plate.The one side contacted with second surface of the metal floor 2 can be with the second surface in the present embodiment
Homalographic, and be mutually aligned.Here medium substrate 1 can be to be made up of the medium that dielectric constant is preset value.
The present embodiment constitutes the dielectric constant of the medium of the medium substrate 1, may refer to medium base in the prior art
The dielectric constant of the medium of plate, is just not described in detail herein.
The dielectric resonator 3 is generally normal by relative dielectric for that can radiate a kind of radiant body of wireless signal
The of a relatively high medium of number is constituted.Generally the relative dielectric constant of the dielectric resonator arrives for 6
140, the relative dielectric constant of the dielectric resonator 3 can be 10.2 in the present embodiment, but be not limited to
10.2 or 6 to 140.
In the prior art, usual gap is all as couple feed part in circularly polarized dielectric resonator antenna
In the presence of for what is fed to dielectric resonator 3, gap will be used to carry out wireless communication in the present embodiment
Number radiation.And the gap for radiation signal is the gap on the metal floor 2 in the present embodiment.
Also retain by the metal part of metal floor 2 in the inner side of gap 4.
The feeder line 5 can carry out electromagnetic coupled with the dielectric resonator 3 and gap 4 respectively to be various,
The feed structure fed.The feeder line 5 uses unit feeder in the present embodiment, a feeder section
It is interior to be acted on by electromagnetic coupled, signal is transmitted to dielectric resonator 3 and gap 4, feed is realized.In this reality
Apply feeder line 5 described in example can also can make the He of dielectric resonator 3 by adjusting the physical parameter of itself
Circular polarization radiation is realized in gap 4 respectively, so that the circularly polarized dielectric resonator antenna that the present embodiment is provided is real
The circular polarization radiation of existing antenna.
Obviously, in circularly polarized dielectric resonator antenna described in the present embodiment, while by dielectric resonator 3
With radiant body of the gap 4 as radiation wireless signal, wireless signal radiation is carried out.And can be situated between by adjusting
Matter resonator 3 and the physical parameter in gap 4, can lean on dielectric resonator 3 and the resonant frequency in gap 4
Closely, so as to realize the close of working band.It is the to assume the working band of dielectric resonator in the present embodiment
One frequency band, the working band in gap 4 is second band.First band and second band be extremely in the present embodiment
Small part is different.Here first band is different with second band at least part is divided into two kinds of situations, a kind of feelings
Condition is that first band and second band overlap；Second of situation, first band and second band are adjacent.
First band and second band together form the 3rd frequency band in the present embodiment, and the 3rd frequency band is this reality
The working band of circularly polarized dielectric resonator antenna described in example is applied, circularly polarized dielectric resonator antenna is operated in the 3rd
Clawback loss during frequency band is larger, requires to be more than designated value in the present embodiment.During concrete implementation,
The designated value can be 10dB.
Obviously the radiation of wireless signal is participated in using gap 4 in the present embodiment so that circularly polarized dielectric is humorous
Shake antenna can bandwidth of operation be the 3rd frequency band, and the 3rd frequency band be clearly be more than first band, therefore lifting
The bandwidth of operation of circularly polarized dielectric resonator antenna, solves circularly polarized dielectric resonator antenna in the prior art
The problem of bandwidth of operation is narrow.
Table 1 is circularly polarized dielectric resonator antenna described in the present embodiment and existing circularly polarized dielectric resonator antenna
Comparison of the axle than relative bandwidth.
In the present embodiment, the dielectric resonator 3 is the resonator with degeneracy mode of operation.And generally
When the resonator with degeneracy mode of operation, for the circularly polarized dielectric resonator antenna described in the embodiment of the present invention
When, its degeneracy mode of operation that typically all works.The dielectric resonator 3 of degeneracy mode of operation is operated in, generally
There are two kinds of mutually orthogonal polarization modes.The dielectric resonator 3 also would operate in both cross polarizations
Pattern.Specifically, the form of dielectric resonator 3 is cylinder or cuboid.It is described in the present embodiment
Dielectric resonator 3 is preferably cylinder or cuboid, to simplify the control of making and accuracy.
The gap 4 is preferably annulus, more preferably Axisymmetrical Ring gap.In the present embodiment
It facts have proved that the radiation effect that the gap 4 is axial symmetry gap is good.Gap 4 is symmetrical in the present embodiment
Axle will typically pass through the geometric center in gap 4.The gap 4 can be annular slot, square in the present embodiment
Shape circumferential weld gap, elliptical ring gap, hexagonal rings gap etc. have axisymmetric annular slot.In the present embodiment
Described in annulus be also preferably Central Symmetry gap, symmetrical centre is the geometric center in the gap 4.
Here centrosymmetric gap 4 may include annular slot, and symmetrical centre is the ring heart of the annular slot.Institute
State centrosymmetric gap 4 and may also include Q-RING gap, symmetrical centre is square where the square circumferential weld gap
The center of shape.
When implementing, usual upright projection of the dielectric resonator 3 on the metal floor 2 is
Cover the gap 4.Generally, the bottom surface that the dielectric resonator 3 is contacted with metal floor 2
Cover all the gap 4, i.e., the bottom surface that described dielectric resonator 3 is contacted with metal floor 2
The area that area will be surrounded not less than gap 4.
As shown in Figure 1 to Figure 2, the antenna also includes in the present embodiment：Feed port 7 and pair net
Network 6；The feed port 7 is connected by the matching network 6 with the feeder line 5；Wherein, described
Distribution network 6 is used for the impedance matching of the circularly polarized dielectric resonator antenna.The feed port 7 is used for setting
Standby interior feeding network is connected, and can receive the electric signal of feeding network supply.The matching network 6 can be wrapped
Include that impedance transformation line or lamped element network etc. are various can to realize the structure of impedance matching.The lamped element
It may include inductively or capacitively to wait element.In the present embodiment can by change the impedance transformation line line width,
Change the electrical characteristic parameter of component in lamped element network, the impedance of matching network is adjusted, so as to realize resistance
Anti- matching.Adjust the electrical characteristic parameter of component in lamped element network, it may include the capacitance of adjustment electric capacity,
The tune for realizing electrical characteristic parameter such as one or more of the inductance value for adjusting inductance and the resistance value for adjusting resistance
It is whole.
The feeder line is preferably L-shaped feeder line in the present embodiment.L-shaped feeder line can be divided into two parts, and this two
The angle of individual part is 90 °.It is preferably L-shaped microstrip line in the present embodiment.Microstrip line is that one kind can pacify
The microwave transmission line that plain conductor on medium substrate is constituted, signal transmission effect low with transfer impedance
The characteristics of rate is good；And directly fed using L-shaped microstrip line, it is also low and make with simple in construction, cost
The characteristics of making simple efficiency high.
In the present embodiment, in the geometry for the one side that the dielectric resonator 3 is contacted with the metal floor 2
The geometric center in the heart and the gap 4 is overlapping.The form of the dielectric resonator 3 is in fig. 1 and 2
Cylinder.The gap 4 is annular slot 4.The dielectric resonator 3 of the cylinder and metal floor 2
The center of circle of the rounded bottom surface of contact is overlapped with the ring heart of annular slot.
Antenna polarization is to describe the parameter that the aerial radiation electromagnetism K-space is pointed to.Because electric field has with magnetic field
Constant relation, therefore general all pointed to using the space of electric field intensity is used as aerial radiation polarization of electromagnetic wave direction.
The polarization mode is the mode of antenna polarization in the present embodiment.
The resonant frequency work of the dielectric resonator 3 and gap 4 in respective polarization mode in the present embodiment
Phase difference when making is maintained at 90 degree or so, so can be achieved with circular polarization radiation.Institute in the present embodiment
The value that preset phase value is typically a very little is stated, the value such as positive and negative 3 degree, positive and negative 2 degree.In this reality
Apply the phase phase of dielectric resonator 3 described in example and gap 4 in the resonant frequency of respective polarization mode
Difference is likely larger than 0 degree of positive place value, it is also possible to for the negative place value less than 0 degree.The phase phase in a word
The absolute value of difference is at 90 degree or so.
The parameter signal for all parts in dielectric resonator antenna provided in an embodiment of the present invention shown in Fig. 3
Figure.W is used in figure 3slotRepresent the slit width of annulus；The R is the radius of the inner ring of annulus；
The LsFor the length of the open end of L-shaped microstrip line；The L1It is that L-shaped microstrip line and impedance transformation line connect
Connect the length at end；The LtFor the length of impedance transformation line；The WtFor the width of impedance transformation line.Institute
State the thickness that h is medium substrate；The d is height of the dielectric resonator in z-axis；The 2a is medium
The path length of resonator.W50For the width in x-axis of feed port；The L2It is feed port in y
Width on axle.X-axis, y-axis and z-axis are collectively forming rectangular coordinate system in space.
The emulation for the circularly polarized dielectric resonator antenna that Fig. 4 to Fig. 6 provides for the present embodiment and measured drawing.The circle
The parameter of polarized media resonant antenna is as follows：L1=17mm, L2=6.5mm, Lt=5mm, R=3mm,
Wslot=0.25mm, Wt=W50=3mm, W=L=60mm, a=5mm, d=12mm, Wt=1.5mm,
Ls=11.5mm.
Fig. 4 is that return loss of embodiment of the present invention frequency response curve is emulated and measured drawing.Antenna surveys 10dB
Impedance bandwidth covers 5.85GHz-7.20GHz, and relative bandwidth is 20.7%.
Fig. 5 is that axle of the embodiment of the present invention is emulated and measured drawing than frequency response curve.Antenna surveys 3dB impedances
Bandwidth covers 6.22GHz-7.20GHz, and relative bandwidth is 14.6%, in 10dB impedance bandwidths.My god
The axle of line is than definition：The endpoint trace of the instantaneous electric field vector of any polarized wave is an ellipse, oval major axis
The ratio between 2A and short axle 2B are referred to as axle ratio AR (Axial Ratio).Axle ratio is one of circular polarized antenna important
Performance indications, it represents the purity of circular polarisation, and bandwidth of the axle than being not more than 3dB is defined as the circle of antenna
Polarize bandwidth.It is the important indicator for weighing antenna to the signal gain otherness of different directions.
Fig. 6 is that the antenna pattern of three frequencies in bandwidth of operation of the embodiment of the present invention is emulated and measured drawing.Figure
A figures are the radiation direction emulation that circularly polarized dielectric resonator antenna of the embodiment of the present invention is operated in 6.22GHz in 6
And measured drawing.B figures are that circularly polarized dielectric resonator antenna of the embodiment of the present invention is operated in 6.7GHz's in Fig. 6
Radiation direction is emulated and measured drawing.C figures are the work of circularly polarized dielectric resonator antenna of the embodiment of the present invention in Fig. 6
In 7.1GHz radiation direction emulation and measured drawing.
Observe each antenna pattern in Fig. 6 to understand, axially main polarization (left-hand circular polarization) of (θ=0 °)
More than 15dB is higher by than cross polarization (right-handed circular polarization), with preferable left-hand circular polarization characteristic.
In embodiments of the present invention, if feeder line is the L-shaped microstrip line of 90-degree bent to the right, left-handed circle will be formed
Polarization characteristic.If feeder line is the L-shaped microstrip line of 90-degree bent to the left, right-handed circular polarization characteristic is formed.Can root
According to Polarization selection L-shaped microstrip line overbending direction needed for real work.
The embodiment of the present invention provides a kind of communication equipment, and the communication terminal includes：As embodiment one is provided
At least one of described circularly polarized dielectric resonator antenna.Here communication equipment can lead to for various movements
Equipment is believed, for example, mobile phone, tablet personal computer or various vehicle-mounted mobile communication equipments.There is provided in the present embodiment
Communication equipment in may include feeding network and communication chip, feeding network connection feed port, according to logical
Believe the work of circularly polarized dielectric resonator antenna described in chip controls.For example, by controlling feeding network to feeder line
The electric signal of transmission, radiation of wireless signal of control dielectric resonator and loop feeder etc..
In a word, communication equipment described in the present embodiment employs the circularly polarized dielectric resonator antenna described in embodiment one,
With antenna structure is simple, cost is low, bandwidth of operation big good communication quality the characteristics of.
As shown in fig. 7, the present embodiment provides a kind of parameter determination method of circularly polarized dielectric resonator antenna, institute
The method of stating includes：
Step S110：Dielectric resonator and at least one of physical parameter in gap are adjusted, makes the medium
Resonator works are in first band and make the gap radiation wireless signal and be operated in second band；Wherein,
The first band is at least partly different with the second band, and is collectively forming the 3rd frequency band, the described 3rd
Frequency band is sequential frequency band；The circularly polarized dielectric resonator antenna is operated in return loss during three frequency band,
More than designated value；
Step S120：The physical parameter of feeder line is adjusted, the dielectric resonator and the gap is carried out respectively
Circular polarization radiation.
It will be joined in the present embodiment by adjusting the physics of at least one in both dielectric resonator and gap
Number so that dielectric resonator and annulus are involved in the radiation of wireless signal.And dielectric resonator and gap
Working band it is at least partly different, the bandwidth of operation of antenna is so widened by the working band in gap；
So as to determine that the circular polarisation resonance antenna that parameter is obtained has the characteristics of bandwidth of operation is high in this way.This
Designated value described in embodiment may refer to the associated description in previous embodiment one, just not be repeated herein.
The step S110 may include in the present embodiment：The physical parameter of the fixed dielectric resonator, is adjusted
The physical parameter in whole gap；The physical parameter in fixed gap, adjusts the physical parameter of dielectric resonator；Also may be used
Physical parameter including adjusting dielectric resonator and gap simultaneously.Here the physical parameter of dielectric resonator can
Including：Dimensional parameters, form parameter and the dielectric constant of dielectric resonator.Here dimensional parameters may include
The length and width of dielectric resonator and high value.The form parameter may include the shape for changing dielectric resonator,
For example, the dielectric resonator of cylinder to be altered to the dielectric resonator of cuboid.The dielectric parameter can be wrapped
Include dielectric constant of the medium of the dielectric resonator etc..The physical parameter in the gap may include the shape in gap
Shape parameter and dimensional parameters.Adjusting the form parameter may include：Annular slot is changed to elliptical ring gap
Or Q-RING gap.Adjusting the dimensional parameters in the gap may include：Adjust the ring footpath in slit width and adjustment gap.
For example, the one kind in the ring footpath in the radius of annulus or a diameter of adjustment gap where adjustment annular slot.
After the physical parameter that dielectric resonator and annulus are determined in the step s 120, feeder line will be adjusted
Physical parameter.Here adjustment feeder line physical parameter include adjustment feeder line dimensional parameters, feed parameter and
Material parameter, form parameter etc..For example, the line length of adjustment L-shaped feeder line is the dimensional parameters of adjustment feeder line
It is a kind of.Adjustment feed parameter may include the parameters such as adjustment feed placement, the size of feeder section.Adjust material
Parameter may include the composition material for adjusting feeder line.
In a word, dielectric resonator and annulus are made by adjusting the physical parameter of feeder line in the present embodiment
Respectively to two orthogonal direction plans, what just energy was easy realizes circular polarization radiation, forms circular polarized antenna.This
The parameter determination method of circularly polarized dielectric resonator antenna described in embodiment, can be to have information applied to various
In the Automated Design scene of circularly polarized dielectric resonator antenna in the electronic equipment of processing function.Electronic equipment leads to
The execution above method is crossed, can be designed that meets the larger circularly polarized dielectric resonator antenna of bandwidth of operation.
The gap of the circularly polarized dielectric resonator antenna is annulus in the present embodiment.As shown in figure 8,
The step S110 may include：
Step S111：Determine the physical parameter and first resonant frequency of the dielectric resonator；
Step S112：According to first resonant frequency, the second resonance that estimation obtains the annulus is estimated
Calculate frequency；
Step S113：Based on the second resonance estimation frequency, the estimation parameter of the annulus is determined；
Step S114：Physical parameter and the estimation parameter based on the dielectric resonator, to the entelechy
Change dielectric resonator antenna to be emulated, obtain simulation result；
Step S115：According to the simulation result, the physical parameter of annulus is determined.
The determination dielectric resonator may include in the present embodiment：The electronic equipment of parameter determination is carried out, from
Man Machine Interface or the physical parameter that the dielectric resonator is received from other equipment.Further according to dielectric resonance
The physical parameter of device estimates the second resonance estimation frequency.For example, approximately being counted using Medium Wave Guide model
The resonant frequency of the dielectric resonator is calculated, in the present embodiment referred to as the first resonant frequency.
, can be according to the characteristics of first band and at least partly misaligned second band, really in step S112
The resonant frequency for making the first resonant frequency and annulus should be close to each other, but misaligned.In this reality
Applying can be by estimation constant being rule of thumb worth to etc., by first resonance frequency band and estimation constant in example
After being calculated according to preset function relation, the second resonance estimation frequency is obtained.For example, by described first
Resonant frequency is plus the estimation parameter or subtracts the estimation parameter, you can obtain the second resonance estimation
Frequency.The anti-physical parameter for pushing away annulus of the second resonance estimation frequency is recycled, here counter pushes away
To physical parameter be foregoing estimation parameter.For example, it is following by taking annular slot as an example, using using such as
The lower derivation of equation estimates parameter：
The fslotFor the second resonance estimation frequency, c is the light velocity in vacuum, and R is annular slot internal diameter,
WslotFor annular slot width, εeffCalculated by following formula：
Wherein εdFor the relative dielectric constant of dielectric resonator, and εrIt is normal for the relative dielectric of medium substrate 1
Number.
Obviously by above-mentioned formula (1) and (2), at least one set of W will be obtainedslotAnd R.
In step S114, the physical parameter according to dielectric resonator and estimation parameter are emulated
Simulation result.If simulation result shows by preparatory condition, the estimation parameter can be determined directly as annulus
Physical parameter.If simulation result does not meet the emulation preparatory condition, it is believed that emulation does not pass through,
The estimation parameter of annulus will be adjusted according to simulation result, again return to step 114, until emulation passes through.
Here emulation may include by preparatory condition：Emulate in obtained return loss frequency response simulation curve,
There is return loss to be less than the trough for having two return loss in the sequential frequency band of the designated value.Certainly here
Preparatory condition can also be not limited to above-mentioned condition.
Certainly when implementing, methods described also includes：
Step S116：After emulation passes through, the physical parameter according to dielectric resonator and estimation can also be included
Parameter, makes circularly polarized dielectric resonator antenna；
Step S117：Circularly polarized dielectric resonator antenna is surveyed, measured result is formed；Further according to actual measurement
As a result, the final physical parameter of annulus is determined.If measured result here shows by preparatory condition,
Then parameter directly can be estimated as the final physical parameter of annulus using corresponding, if measured result shows
Different preparatory conditions, then can estimate parameter, return to step S114 or step S115 according to measured result adjustment,
It is final to pass through until surveying.
There is provided several specific examples for any one technical scheme provided below according to above-described embodiment：
Example one：
As depicted in figs. 1 and 2, this example provides a kind of broadband circle polarized dielectric resonator antenna, the antenna bag
Include medium substrate 1, metal floor 2, dielectric resonator 3, annular slot 4, L-shaped microstrip line 5, impedance change
Thread-changing 6 and feed port 7.Metal floor 2, annular slot 4 and dielectric resonator 3 are located at medium substrate 1
The same side, L-shaped microstrip line 5 and impedance transformation line 6 are located at the opposite side of medium substrate 1.
Dielectric resonator 3 forms cylinder dielectric resonator by dielectric material, and it is general with higher relative
Dielectric constant (6-140).Relative dielectric constant in the present embodiment is 10.2.
Dielectric resonator 3 is fixed on the top of metal floor 2, and its lower surface center is with being located on metal floor 2
Gap 4 center superposition.
The working frequency of the radiation mode of dielectric resonator 3, can pass through Medium Wave Guide model (Dielectric
Waveguide Model, DWM) approximate calculation draws.In this example, HEM is chosen11δPattern is used as circle
The mode of operation of cylinder dielectric resonator 3, its resonant frequency can approximately be drawn by following formula：
Wherein, c is the light velocity in vacuum, and ε d are the relative dielectric constant of dielectric resonator, and a is cylindrical dielectric
Resonator radius, x=a/ (2d), d is cylindrical dielectric resonator height.
The resonant frequency of annular slot 4 can approximately be drawn by following formula in this example：
Wherein c is the light velocity in vacuum, and R is annular slot internal diameter, wslotFor annular slot width, εeffUnder
Formula is calculated：
Wherein εdFor the relative dielectric constant of dielectric resonator 3, and εrFor the relative dielectric of medium substrate 1
Constant.
The size of dielectric resonator 3 and the size of gap 4 are adjusted, makes the working frequency points of both radiation modes mutually close,
With broadening bandwidth.
Fig. 2 can be this example antenna structure schematic top plan view.In dielectric resonator 3 and the face geometry in gap 4
The heart coincides with position 8.In embodiments of the present invention, the width of L-shaped microstrip line 5 is set to meet 50 ohm
Impedance.L-shaped microstrip line 5 bends 90 degree at position 8 and forms L-shaped, to dielectric resonator 3 and gap 4
Enter row energization.By this energisation mode, dielectric resonator 3 can produce the degenerate mode of two kinds of cross polarizations,
Same gap 4 can also produce the radiation mode of two kinds of cross polarizations.By the open circuit for adjusting L-shaped microstrip line 5
Length is held, dielectric resonator 3 and gap 4 can be made all to carry out circular polarization radiation.It may be selected in this example
Open end length is 0.4 λg, wherein, λgFor the electromagnetic wavelength in medium substrate at 6.5GHz frequencies.
, can be by increasing between L-shaped microstrip line 5 and feed port 7 according to the impedance match situation of antenna
Matching network realizes wideband impedance match.Matching network can be using impedance transformation line or lamped element (electricity
Appearance/inductance) network.In this example, impedance matching is carried out to antenna using impedance transformation line 6.Change resistance
The line width of resistance thread-changing 6 can change its characteristic impedance, control its length to may be implemented in required working frequency range and realize
Impedance matching.
The total dielectric resonator of this example may include cylinder, cuboid, annular and spherical and other have
The dielectric resonator of degeneracy mode of operation.Annular slot described in this example by square circumferential weld gap and other can also have
The annulus of symmetrical structure is substituted.Matching network described in this example may include impedance transformation line, lamped element
Network etc. can realize the matching network of impedance matching.
Example two：
Referring to Fig. 9, this example provides the parameter determination method of broadband circle polarized dielectric resonator antenna, specifically may be used
Comprise the following steps：
Step S210：The size of dielectric resonator and annulus is adjusted, so that both resonant frequencies are mutually leaned on
Closely, with spreading antenna bandwidth.
Step S220：Excitation is provided to dielectric resonator and annulus using L-shaped microstrip line, to produce just
The mode of operation of poor 90 ° of polarization phases is handed over, so as to realize circular polarization radiation.
Step 230：Impedance matching is carried out to antenna using matching network, with broadening impedance bandwidth.
The method that Figure 10 is shown the circularly polarized dielectric resonator antenna of the offer of example one or provided based on example two
In the circularly polarized dielectric resonator antenna of making, axle ratios of the annulus different inner diameters R in each frequency.If axle
The bandwidth of circularly polarized dielectric resonator antenna more a width of than band corresponding less than 3dB, then understand that different R can cause
The change of the axial ratio bandwidth of circularly polarized dielectric resonator antenna.Sets forth in Fig. 10 R for 2.9mm,
The axle ratio gone out during 3.0mm and 3.1mm in each frequency.Obviously, as R=3.0, correspondence circularly polarized dielectric
The axial ratio bandwidth of resonant antenna is maximum.
, can in several embodiments provided herein, it should be understood that disclosed apparatus and method
To realize by another way.Apparatus embodiments described above are only schematical, for example, institute
The division of unit is stated, only a kind of division of logic function there can be other dividing mode when actually realizing,
Such as：Multiple units or component can be combined, or be desirably integrated into another system, or some features can be neglected
Slightly, or do not perform.In addition, the coupling each other of shown or discussed each part or directly coupling
Close or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of equipment or unit,
Can be electrical, machinery or other forms.
The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, make
It can be for the part that unit is shown or may not be physical location, you can with positioned at a place,
It can also be distributed on multiple NEs；It can select therein part or all of according to the actual needs
Unit realizes the purpose of this embodiment scheme.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing module
In or each unit individually as a unit, can also two or more unit collection
Into in a unit；Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ
Hardware adds the form of SFU software functional unit to realize.
One of ordinary skill in the art will appreciate that：Realize all or part of step of above method embodiment
It can be completed by the related hardware of programmed instruction, it is computer-readable that foregoing program can be stored in one
Take in storage medium, the program upon execution, performs the step of including above method embodiment；And it is foregoing
Storage medium include：Movable storage device, read-only storage (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various
Can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
In this, any one skilled in the art the invention discloses technical scope in, can be easily
Expect change or replacement, should all be included within the scope of the present invention.Therefore, protection of the invention
Scope should be based on the protection scope of the described claims.
Claims (12)
1. a kind of circularly polarized dielectric resonator antenna, it is characterised in that the circularly polarized dielectric resonator antenna includes：
Medium substrate, including first surface and the second surface positioned at the first surface back side；Described first
Surface is provided with metal floor；
Dielectric resonator, is contacted with the metal floor, for radiating wireless signal, and is operated in the first frequency
Band；
Gap, on the metal floor, for radiating wireless signal, and is operated in second band；Its
In, the first band is at least partly different with the second band, and collectively constitutes the 3rd frequency band；It is described
3rd frequency band is sequential frequency band；The circularly polarized dielectric resonator antenna is operated in echo during three frequency band
Loss, more than designated value；
Feeder line, positioned at the second surface, respectively with the dielectric resonator and the slot-coupled, is used for
The dielectric resonator and the gap is set to carry out circular polarization radiation respectively.
2. antenna according to claim 1, it is characterised in that
The dielectric resonator is the resonator with degeneracy mode of operation.
3. antenna according to claim 2, it is characterised in that
The form of the dielectric resonator is cylinder or cuboid.
4. antenna according to claim 1, it is characterised in that
The gap is annulus.
5. antenna according to claim 4, it is characterised in that
The annulus is Axisymmetrical Ring gap.
6. the antenna according to any one of claim 1 to 5, it is characterised in that
The antenna also includes：Feed port and matching network；
The feed port is connected by the matching network with the feeder line；
Wherein, the matching network is used for the impedance matching of the circularly polarized dielectric resonator antenna.
7. the antenna according to any one of claim 1 to 5, it is characterised in that
The feeder line includes L-shaped microstrip line.
8. the method according to any one of claim 1 to 5, it is characterised in that
The geometric center for the one side that the dielectric resonator is contacted with the metal floor and the geometry in the gap
Center is overlapping.
9. a kind of communication equipment, it is characterised in that the communication equipment includes：Such as claim 1 to 8
Circularly polarized dielectric resonator antenna described in any one.
10. a kind of parameter determination method of circularly polarized dielectric resonator antenna, it is characterised in that methods described bag
Include：
Dielectric resonator and at least one of physical parameter in gap are adjusted, the dielectric resonator is worked
In first band and make the gap radiation wireless signal and be operated in second band；Wherein, first frequency
Band and second band collectively constitute the 3rd frequency band, and the 3rd frequency band is sequential frequency band；The circularly polarized dielectric
Resonant antenna is operated in return loss during three frequency band, more than designated value；
The physical parameter of feeder line is adjusted, the dielectric resonator and the gap is carried out circular polarization radiation respectively.
11. method according to claim 10, it is characterised in that
The gap is annulus；
The adjustment dielectric resonator and at least one of physical parameter in gap, make the dielectric resonator
It is operated in first band and makes the gap radiation wireless signal and be operated in second band, including：
Determine the physical parameter and first resonant frequency of the dielectric resonator；Wherein, described first is humorous
Vibration frequency is the resonance frequency band of the first band；
According to first resonant frequency, estimation obtains the second resonance estimation frequency of annulus；
Based on the second resonance estimation frequency, the estimation parameter of the annulus is determined；
Physical parameter and the estimation parameter based on the dielectric resonator, to the circularly polarized dielectric resonance
Antenna is emulated, and obtains simulation result；
According to the simulation result, the physical parameter of the annulus is determined.
12. method according to claim 10, it is characterised in that
The physical parameter of the adjustment feeder line, makes the dielectric resonator and the gap carry out circular polarisation respectively
Radiation, including：
The physical parameter of L microstrip lines is adjusted, the dielectric resonator and the gap is carried out circular polarisation respectively
Radiation.
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| PCT/CN2016/083349 WO2016197823A1 (en) | 2016-02-01 | 2016-05-25 | Circularly polarised dielectric resonator antenna, parameter determination method therefor, and communication device |
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