CN106099360A - Dielectric resonator filter antenna - Google Patents
Dielectric resonator filter antenna Download PDFInfo
- Publication number
- CN106099360A CN106099360A CN201610345948.XA CN201610345948A CN106099360A CN 106099360 A CN106099360 A CN 106099360A CN 201610345948 A CN201610345948 A CN 201610345948A CN 106099360 A CN106099360 A CN 106099360A
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- China
- Prior art keywords
- antenna
- microstrip line
- dielectric resonator
- frequency
- resonator filter
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Classifications
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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
-
- 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
-
- 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
Abstract
The open a kind of dielectric resonator filter antenna of the present invention.This antenna from base drive by microstrip coupled gap, is encouraged 3 patterns to produce wide radiation passband simultaneously, encourages the medium resonator antenna of wedge shape to improve gain by using a pair spaced slot.The open circuit minor matters of feeding microstrip line can provide two radiation zero near passband edges.Parasitic microstrip line adds the both sides of feeding microstrip line abreast to, in order to improve the Out-of-band rejection level of high frequency stopband；And by coupling gap therefrom between be separately used for improving the Out-of-band rejection level of low-frequency stop band.The present invention has quasi-elliptic function band-pass response, and simple in construction, does not uses the filter circuit of complexity.The 10dB impedance bandwidth of this design can reach 23%, and average gain 9.05dBi in band, in very wide stopband range, Out-of-band rejection is more than 25dB.By adjusting antenna size, the present invention also can realize different bandwidth characteristic (13% 23%).
Description
Technical field
The present invention relates to the antenna in wireless mobile communications field, can be applicable to mobile communication base station etc. particularly to one and penetrate
The compact of frequency terminal, broadband, high gain medium resonator filter antenna.
Background technology
In wireless communication system, integration module receives much concern.Antenna and wave filter are that radio-frequency front-end two is indispensable
Element.Generally, antenna and wave filter are to carry out independent design as two elements, and then they be respectively matched to 50 Ω standards
Port, then the two is cascaded.Since Ru Ci, having made whole module size increase, this is unfavorable for the radio-frequency front-end of limited space
's.Again owing to the bandwidth of wave filter and antenna is frequently not on all four, filter effect is caused to be affected.In order to overcome this
A little problems, wave filter and antenna set become a module and are suggested.
The Integrated Solution of present most of wave filter and antenna have employed collaborative design, antenna and filtering in this scheme
Device is directly connected to, and need not be respectively matched to 50 Ω standard port again.Collaborative design reduces module size, it is to avoid match mark
The loss that quasi-port causes.Although the collaborative design of wave filter and antenna improves module performance to a certain extent, but by
Inevitable in the loss of wave filter, when in particular for multistage resonator, often lead to be lost more serious, this results in
Antenna gain is relatively low.
Present stage seldom has Antenna Design can have the filter circuit that preferable filter effect does not use again complexity.This
Outward, a lot of application need filter antenna to have wider bandwidth and of a relatively high gain.
Content of the invention
Instant invention overcomes the deficiency that prior art exists, use the theory of wave filter and antenna Combined design, provide one
Kind can be applicable to the compact of the rf terminals such as mobile communication base station, broadband, high gain medium resonator filter antenna.
The technical solution adopted in the present invention is as follows.
Dielectric resonator filter antenna, it includes dielectric resonator, is positioned at the medium substrate below dielectric resonator, is positioned at
The feeding microstrip line of gap that the floor of medium substrate upper surface, floor are provided with and the etching of medium substrate lower surface and parasitism
Microstrip line；Article two, described gap specular on floor length direction；It is separated formation specular in the middle of every gap
Two sections of coupling gaps, be used for suppressing the low-frequency stop band resonance of antenna；Article two, the spacing between gap is center of antenna frequency pair
One of medium answered wavelength；Feeding microstrip line is positioned at below the intermediate point line in two described gaps, and feeding microstrip line carries
For two radiation zero near antenna passband both sides；Article four, described parasitic microstrip line symmetry is distributed in feeding microstrip line
Both sides and the lower section being positioned at two described gaps, for producing radiation zero at antenna high frequency stopband.
Further, the 10dB impedance bandwidth of antenna is adjustable in 13%-23%.
Further, described dielectric resonator top is protruded, and is wedge, semicolumn or hemisphere.
Further, length l of the open circuit minor matters of feeding microstrip linemThe frequency of desirable antenna passband the right and left radiation zero
Rate flAnd fhHalf-wavelength l in corresponding mediummlAnd lmhIntegral multiple N1lmlAnd N2lmhNear ± 1/10 λcIn the range of value, i.e.
N1lml-1/10λc<lm<N1lml+1/10λcAnd N2lmh-1/10λc<lm<N2lmh+1/10λc, N1,N2For positive integer, λcCentered on frequency
Wavelength in the corresponding medium of rate.Further, length l of the open circuit minor matters of feeding microstrip line (4)mMeet N1lml-1/10λc<lm<
N1lml+1/10λcAnd N2lmh-1/10λc<lm<N2lmh+1/10λC,And meet l simultaneouslymTake minimum of a value.
Further, length l of every parasitic microstrip line (6)pProduce in the corresponding medium of frequency of radiation zero at it
Half-wavelength 1/2 λgNear ± 1/10 λgI.e. 1/2 λg-1/10λg<lp<1/2λg+1/10λg, λgFor the wavelength in medium.
Compared with prior art, there is advantages that
1. use dielectric resonator can produce multiple pattern, form wider bandwidth, and bandwidth can be by changing
The size of dielectric resonator is regulated, and in the present invention, the 10dB impedance bandwidth of antenna can be regulated between 13%-23%.
2. the length of scientific design feeding microstrip line open circuit minor matters introduces radiation zero, and passes through spaced slot and interpolation
Parasitic microstrip line improves stopband suppression, thus is fused to filter effect in Antenna Design, is not introduced into the filter circuit of complexity, sky
Line loss consumption is low.
3. filter antenna described in has the feature of compact conformation, broadband, high-gain.The 10dB impedance bandwidth of antenna can reach
23%, antenna average gain 9.05dBi, Out-of-band rejection, more than 25dB, has wider stopband.
Brief description
Fig. 1 is the side view of present media resonator filter antenna specific embodiment；
Fig. 2 is the top view of present media resonator filter antenna specific embodiment；
Fig. 3 is the top view on the floor of present media resonator filter antenna specific embodiment；
Fig. 4 is the upward view of present media resonator filter antenna specific embodiment；
Fig. 5 is the S of present media resonator filter antenna specific embodiment11The emulation of parameter and test curve figure；
Fig. 6 is gain emulation and the test curve figure of present media resonator filter antenna specific embodiment；
Fig. 7 is the normalization antenna pattern at 5GHz for the present media resonator filter antenna specific embodiment；
Fig. 8 is the S that present media resonator filter antenna specific embodiment is adjusted to broadband and arrowband11Parameters simulation is bent
Line chart；
Fig. 9 is the gain simulation curve that present media resonator filter antenna specific embodiment is adjusted to broadband and arrowband
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the enforcement to the present invention is described further, but the enforcement of the present invention and protection domain
It is not limited to this.
Be only used as example, a kind of be operated in 5GHz broadband, high gain medium resonator filter antenna.Fig. 1 the present embodiment
The side view of antenna.The dielectric resonator 1 of the present embodiment uses relative dielectric constant εrThe dielectric material processing of=10, top is carved
Shape advantageously reduces radiation secondary lobe.Pinnacle height 4mm above, bottom thickness h=3mm, long l=63mm, wide w=40mm；Medium
Substrate 3 uses thickness h1The RO4003 of=0.813mm.
Fig. 2 is the top view of the present embodiment.Refering to Fig. 3, the floor 2 of the present embodiment, the i.e. upper surface of medium substrate 3.Article two,
Gap 5 specular on floor length direction；It is separated the two sections of coupling gaps forming specular in the middle of every gap 5,
It is used for suppressing the low-frequency stop band resonance of antenna；Article two, the spacing between gap 5 is one of corresponding medium of center of antenna frequency
Wavelength.Fig. 4 is the lower surface of the medium substrate 3 of the present embodiment, length l of the open circuit minor matters of feeding microstrip line 4m(i.e. near feedback
Gap 5 location directly below of electricity microstrip line 4 side is to the length of the open end of feeding microstrip line) about desirable antenna passband two
Frequency f of limit radiation zerolAnd fhHalf-wavelength l in corresponding mediummlAnd lmh(
C is the light velocity in vacuum, εeEffective dielectric constant) integral multiple N1lmlAnd N2lmh(N1,N2For any positive integer) near ± 1/10 λc
(λc, wavelength in the corresponding medium of centre frequency) in the range of value, i.e. N1lml-1/10λc<lm<N1lml+1/10λcAnd N2lmh-1/
10λc<lm<N2lmh+1/10λc.In order to reduce circuit size, l as far as possiblemTake and can make N1lml-1/10λc<lm<N1lml+1/10λcWith
N2lmh-1/10λc<lm<N2lmh+1/10λcMeet l simultaneouslymTake minimum of a value, a preferred size l in the present embodimentmTake 45.2mm.
Article four, parasitic microstrip line 6 symmetry is distributed in the both sides of feeding microstrip line 4 and the lower section being positioned at two described gaps 5, is used for
Produce radiation zero at antenna high frequency stopband.Length l of parasitic microstrip line 6pCorresponding in the frequency of its radiation zero producing
Half-wavelength 1/2 λ in mediumgNeighbouring 1/10 λg(λg, wavelength in medium) in the range of, 1/2 λg-1/10λg<lp<1/2λg+1/10
λg。
Refering to Fig. 5, the emulation of the embodiment of the present invention and the S of test11Parameter, dotted line is test result.10dB impedance bandwidth
20.3%；Refering to Fig. 6, the emulation of the embodiment of the present invention and the gain curve of test, average gain 9.05dB in the band of test, tool
Having good frequency selectivity, Out-of-band rejection, more than 25dB, has very wide stopband.Refering to Fig. 7, the embodiment of the present invention is 5GHz's
Normalized radiation pattern.Greatest irradiation direction is in the surface of radiant body, main polarization bigger more than 25dBi than cross polarization.In passband
The directional diagram of other frequencies is similar with the directional diagram of 5GHz, and in whole passband, directional diagram is more stable.
Refering to Fig. 8, the embodiment of the present invention is realized the S of the two kinds of situations in broadband and arrowband respectively by adjusting parameter11Parameter is bent
Line chart, the 10dB impedance bandwidth 23% of wide band model, the 10dB impedance bandwidth 13% of narrowband model.Fig. 9 is the embodiment of the present invention
Realize the maximum gain that the gain curve figure of broadband and narrowband model, broadband and narrowband model emulate be respectively 9.36dBi and
9.4dBi。
The embodiment that the present invention provides is applied to wireless mobile communications field, can be applicable to connecing of various types of wireless communication systems
Receive and in transmitting equipment, benefit from the present invention and Antenna Design is combined together with wave filter design, can obtain simpler
Modular structure, it is easy to processing, reduces complexity and the cost of radio-frequency front-end, improves the overall performance of module.
It is only the preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention in sum
Within principle, any modification of being made, equivalent, simplification, improvement etc., should be included in protection scope of the present invention it
In.
Claims (6)
1. dielectric resonator filter antenna, it is characterised in that include dielectric resonator (1), be positioned at dielectric resonator (1) below
Gap (5) that medium substrate (3), the floor (2) being positioned at medium substrate upper surface, floor are provided with and medium substrate lower surface
The feeding microstrip line (4) of etching and parasitic microstrip line (6)；Article two, described gap (5) specular on floor length direction；Often
It is separated the two sections of coupling gaps forming specular in the middle of bar gap (5), be used for suppressing the low-frequency stop band resonance of antenna；Two
Spacing between bar gap (5) is one of the corresponding medium of center of antenna frequency wavelength；Feeding microstrip line (4) is positioned at two
Below the intermediate point line in described gap (5), feeding microstrip line (4) provides two radiation zero near antenna passband both sides；
Article four, described parasitic microstrip line (6) symmetry is distributed in the both sides of feeding microstrip line (4) and is positioned at two described gaps (5)
Lower section, for producing radiation zero at antenna high frequency stopband.
2. dielectric resonator filter antenna according to claim 1, it is characterised in that the 10dB impedance bandwidth of antenna exists
In 13%-23% adjustable.
3. dielectric resonator filter antenna according to claim 1, it is characterised in that described dielectric resonator top is convex
Go out, be wedge, semicolumn or hemisphere.
4. dielectric resonator filter antenna according to claim 1, it is characterised in that the open circuit branch of feeding microstrip line (4)
Length l of jointmFrequency f of desirable antenna passband the right and left radiation zerolAnd fhHalf-wavelength l in corresponding mediummlAnd lmh
Integral multiple N1lmlAnd N2lmhNear ± 1/10 λcIn the range of value, i.e. N1lml-1/10λc<lm<N1lml+1/10λcAnd N2lmh-1/
10λc<lm<N2lmh+1/10λc, N1,N2For positive integer, λcCentered on wavelength in the corresponding medium of frequency.
5. dielectric resonator filter antenna according to claim 4, it is characterised in that the open circuit branch of feeding microstrip line (4)
Length l of jointmMeet N1lml-1/10λc<lm<N1lml+1/10λcAnd N2lmh-1/10λc<lm<N2lmh+1/10λc, and meet simultaneously
lmTake minimum of a value.
6. dielectric resonator filter antenna according to claim 1, it is characterised in that the length of every parasitic microstrip line (6)
Degree lpProduce half-wavelength 1/2 λ in the corresponding medium of frequency of radiation zero at itgNear ± 1/10 λgI.e. 1/2 λg-1/10λg<lp<
1/2λg+1/10λg, λgFor the wavelength in medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345948.XA CN106099360A (en) | 2016-05-20 | 2016-05-20 | Dielectric resonator filter antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345948.XA CN106099360A (en) | 2016-05-20 | 2016-05-20 | Dielectric resonator filter antenna |
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| CN106099360A true CN106099360A (en) | 2016-11-09 |
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| CN201610345948.XA Pending CN106099360A (en) | 2016-05-20 | 2016-05-20 | Dielectric resonator filter antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
| CN109193147A (en) * | 2018-09-14 | 2019-01-11 | 南通大学 | A kind of low section filter antenna using trough of belt dielectric patch |
| CN109244656A (en) * | 2018-10-31 | 2019-01-18 | 南通至晟微电子技术有限公司 | 5G millimeter wave filters broad-band antenna |
| CN109687113A (en) * | 2019-01-22 | 2019-04-26 | 西安电子科技大学 | Filter, dielectric resonant aerial with biradial zero |
| CN109994823A (en) * | 2019-05-07 | 2019-07-09 | 成都北斗天线工程技术有限公司 | A kind of conformal medium resonator antenna of Unit three ring battle array |
| CN110401021A (en) * | 2019-07-29 | 2019-11-01 | 华东交通大学 | A kind of dielectric resonator filter antenna |
| CN112563694A (en) * | 2020-11-16 | 2021-03-26 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
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| EP0997975A2 (en) * | 1998-10-28 | 2000-05-03 | Murata Manufacturing Co., Ltd. | Antenna apparatus, and antenna and transceiver using the same |
| US20120212386A1 (en) * | 2011-02-21 | 2012-08-23 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence | Wideband circularly polarized hybrid dielectric resonator antenna |
| CN103545602A (en) * | 2013-10-14 | 2014-01-29 | 上海大学 | Ku-band circularly polarized dielectric resonator antenna |
| CN104993239A (en) * | 2015-07-16 | 2015-10-21 | 清华大学 | Triple-polarized dielectric resonant antenna with high isolation and low cross polarization |
| CN205657172U (en) * | 2016-05-20 | 2016-10-19 | 华南理工大学 | Dielectric resonator filtering antenna |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0997975A2 (en) * | 1998-10-28 | 2000-05-03 | Murata Manufacturing Co., Ltd. | Antenna apparatus, and antenna and transceiver using the same |
| US20120212386A1 (en) * | 2011-02-21 | 2012-08-23 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence | Wideband circularly polarized hybrid dielectric resonator antenna |
| CN103545602A (en) * | 2013-10-14 | 2014-01-29 | 上海大学 | Ku-band circularly polarized dielectric resonator antenna |
| CN104993239A (en) * | 2015-07-16 | 2015-10-21 | 清华大学 | Triple-polarized dielectric resonant antenna with high isolation and low cross polarization |
| CN205657172U (en) * | 2016-05-20 | 2016-10-19 | 华南理工大学 | Dielectric resonator filtering antenna |
Non-Patent Citations (1)
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|---|
| P.F.HU等: "A Compact Filtering Dielectric Resonator Antenna With Wide Bandwidth and High Gain", 《IEEE XPLORE DIGITAL LIBRARY》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108232434A (en) * | 2017-12-15 | 2018-06-29 | 华南理工大学 | A kind of low section omnidirectional radiation filters dipole antenna |
| CN108232434B (en) * | 2017-12-15 | 2023-11-21 | 华南理工大学 | Low-profile omnidirectional radiation filtering dipole antenna |
| CN109193147A (en) * | 2018-09-14 | 2019-01-11 | 南通大学 | A kind of low section filter antenna using trough of belt dielectric patch |
| CN109193147B (en) * | 2018-09-14 | 2020-09-08 | 南通大学 | Low-profile filtering antenna adopting grooved dielectric patch |
| CN109244656A (en) * | 2018-10-31 | 2019-01-18 | 南通至晟微电子技术有限公司 | 5G millimeter wave filters broad-band antenna |
| CN109687113A (en) * | 2019-01-22 | 2019-04-26 | 西安电子科技大学 | Filter, dielectric resonant aerial with biradial zero |
| CN109994823A (en) * | 2019-05-07 | 2019-07-09 | 成都北斗天线工程技术有限公司 | A kind of conformal medium resonator antenna of Unit three ring battle array |
| CN110401021A (en) * | 2019-07-29 | 2019-11-01 | 华东交通大学 | A kind of dielectric resonator filter antenna |
| CN110401021B (en) * | 2019-07-29 | 2020-11-13 | 华东交通大学 | Dielectric resonator filter antenna |
| CN112563694A (en) * | 2020-11-16 | 2021-03-26 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
| CN112563694B (en) * | 2020-11-16 | 2023-03-14 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
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Application publication date: 20161109 |