CN104466399B - Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals - Google Patents
Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals Download PDFInfo
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- CN104466399B CN104466399B CN201310433345.1A CN201310433345A CN104466399B CN 104466399 B CN104466399 B CN 104466399B CN 201310433345 A CN201310433345 A CN 201310433345A CN 104466399 B CN104466399 B CN 104466399B
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- radiation patch
- annular groove
- microstrip antenna
- metal belt
- endless metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
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- Waveguide Aerials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of microstrip antennas, including medium substrate, monopole radiation patch and microstrip feed line, wherein, the monopole radiation patch is printed on a side surface of the medium substrate, annular groove is provided in the monopole radiation patch, the annular groove forms complementary slotted ring resonator with the endless metal belt adhered on the medium substrate relative to another side surface of the monopole radiation patch, is used for filtering interference signals；The microstrip feed line is connect with the monopole radiation patch, is fed for microstrip antenna；The present invention also discloses the methods and mobile terminal of a kind of microstrip antenna filtering interference signals, it can satisfy multifrequency, the ultra wide band demand of antenna using the present invention program, interference problem between bring antenna when efficiently solving other data services of successive bands transmitting, while reducing the area of antenna.
Description
Technical field
The present invention relates to a kind of method of antenna technical field more particularly to microstrip antenna and its filtering interference signals, move
Dynamic terminal.
Background technique
As wireless communication technique develops, mobile terminal be increasingly intended to miniaturization, low cost, ultra-thin fashion it is outer
It sees, while also having increasing need for being compatible with multiple communication standards simultaneously, it is desirable that high-performance.This requires the antennas of mobile terminal, no
Only volume wants small, and to have broadband, and is not interfered by the data service of other frequency ranges also, thus design it is a both can be with
Meet structural requirement, customer requirement, the antenna that also can satisfy antenna performance index request becomes the problem that industry faces at present.
Flat plane antenna has many advantages, such as that light-weight, small in size, section is low with it, is easily integrated, is at low cost, being easy to make,
It can satisfy requirement of the mobile terminal device to antenna volume, but the needs of antenna while compatible multiple communication standards now,
And it is not interfered by the data service of other frequency ranges, this just needs to improve with some measures the interference of successive bands.
Summary of the invention
Present invention generally provides a kind of methods of microstrip antenna and its filtering interference signals, mobile terminal, can satisfy more
Frequently, the demand of ultra wide band, interference problem between bring antenna when efficiently solving other data services of successive bands transmitting, together
When reduce the area of antenna.
The technical scheme of the present invention is realized as follows:
The present invention provides a kind of microstrip antenna, which includes: medium substrate, monopole radiation patch and micro-strip
Feeder line, wherein
The monopole radiation patch is printed on a side surface of the medium substrate；
Annular groove is provided in the monopole radiation patch, relative to the list on the annular groove and the medium substrate
The endless metal belt of another side surface attachment of extremely sub- radiation patch forms complementary slotted ring resonator, is used for filtering interference signals；
The microstrip feed line is connect with the monopole radiation patch, is fed for microstrip antenna.
In above scheme, the medium substrate includes at least one layer of medium, and the endless metal belt is attached to the medium base
The first layer dielectric surface of plate.
In above scheme, the annular groove is equal to the half of the signal of different frequency with the respective electrical length of the endless metal belt
Wavelength is respectively provided with different resonance frequencies；
Third resonance frequency is coupled out between the endless metal belt and the annular groove.
In above scheme, the shape of the monopole radiation patch is rectangle, circle, polygon or circular ring shape.
In above scheme, the annular groove and the endless metal belt are round or rectangular.
The present invention also provides a kind of methods of microstrip antenna filtering interference signals, this method comprises:
Annular groove is provided in the monopole radiation patch, relative to the list on the annular groove and the medium substrate
The endless metal belt of another side surface attachment of extremely sub- radiation patch forms complementary slotted ring resonator, passes through the complementary driffractive ring resonance
Device filtering interference signals.
In above scheme, this method further include: the complementation slotted ring resonator filters out the interference signal of three frequency ranges, according to
The frequency range of three interference signals, determines the length and spacing of the annular groove and the endless metal belt.
It include any one micro-strip day recited above in the mobile terminal invention further provides a kind of mobile terminal
Line.
Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals provided by the invention, the microstrip antenna
Including medium substrate, monopole radiation patch and microstrip feed line, wherein the monopole radiation patch is printed on the medium base
On one side surface of plate, it is provided with annular groove in the monopole radiation patch, it is opposite on the annular groove and the medium substrate
Complementary slotted ring resonator is formed in the endless metal belt that another side surface of the monopole radiation patch is adhered to, for filtering out interference
Signal；The microstrip feed line is connect with the monopole radiation patch, is fed for microstrip antenna；In this way, passing through complementary driffractive ring
Resonator can generate three resonance frequencies, can meet the needs of multifrequency, ultra wide band, and energy filtering interference signals frequency,
And effectively reduce the size of antenna.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of microstrip antenna in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram on surface where the monopole radiation patch of microstrip antenna in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram on surface where the endless metal belt of microstrip antenna in the embodiment of the present invention；
Fig. 4 is a kind of microstrip antenna structure schematic diagram of mobile terminal in the embodiment of the present invention；
Fig. 5 is the flow diagram of the method for microstrip antenna filtering interference signals in the embodiment of the present invention；
Fig. 6 is the return loss plot figure that microstrip antenna is used in the embodiment of the present invention one.
Specific embodiment
In the embodiment of the present invention, mobile terminal configuration includes the micro- of medium substrate, monopole radiation patch and microstrip feed line
Band antenna, wherein the monopole radiation patch is printed on a side surface of the medium substrate, the monopole radiation patch
On piece is provided with annular groove, the annular groove and another side surface on the medium substrate relative to the monopole radiation patch
The endless metal belt of attachment forms complementary slotted ring resonator, is used for filtering interference signals；The microstrip feed line and the monopole spoke
Patch connection is penetrated, is fed for microstrip antenna.
The implementation of technical solution is described in further detail below by drawings and the specific embodiments.
Fig. 1 is the structural schematic diagram for the microstrip antenna that the embodiment of the present invention is realized, as shown in Figure 1, the microstrip antenna includes:
Monopole radiation patch 1, medium substrate 3, microstrip feed line 4；Wherein,
The monopole radiation patch 1 is printed on a side surface of the medium substrate 3；
Be provided with annular groove 2 in the monopole radiation patch 1, the annular groove 2 on the medium substrate 3 relative to institute
The endless metal belt 5 for stating another side surface attachment of monopole radiation patch 1 forms complementary slotted ring resonator, for filtering out interference letter
Number；
The microstrip feed line 4 is connect with the monopole radiation patch 1, is fed for microstrip antenna.
The medium substrate 3 includes at least one layer of medium, and the endless metal belt 5 is generally attached to the medium substrate 3
First layer dielectric surface；
The microstrip antenna further includes earth plate 6, and the earth plate 6 is with the endless metal belt 5 in the same side of medium substrate 3
Surface；
The annular groove 2 and the respectively a part of open-loop resonator (SRRs) of the endless metal belt 5 and complementary open loop are humorous
A part of vibration device (CSRRs)；When SRRs work is in resonance frequency, meeting under the action of microwave magnetic field of annular groove 2
Circular current is induced, like being a magnetic moment, reinforces or resists original magnetic field, occurs negative magnetic conductivity at resonance frequency,
To there is a band inhibition effect near resonance frequency；When CSRRs work is near resonance frequency, described endless metal belt 5 etc.
Effect is an electric dipole, has negative dielectric constant near resonance frequency, has band inhibition effect；
The shape of the monopole radiation patch 1 can have any shape, such as rectangle, circle, polygon or circular ring shape；
The annular groove 2 and the endless metal belt 5 can be round or rectangular.
In the embodiment of the present invention, the 1 place surface of monopole radiation patch of microstrip antenna is as shown in Fig. 2, the micro-strip day
Line includes: monopole radiation patch 1, medium substrate 3, microstrip feed line 4, wherein is provided with annular in the monopole radiation patch 1
Slot 2；Relationship between each section has provided in Fig. 1, no longer explains herein.
In the embodiment of the present invention, the 5 place surface of endless metal belt of microstrip antenna as shown in figure 3, the microstrip antenna Jie
Another side surface on matter substrate 3 relative to the monopole radiation patch 1 is attached with endless metal belt 5 and earth plate 6, wherein
The endless metal belt 5 is located at the first layer dielectric surface of medium substrate 3；
The endless metal belt 5 slotted ring resonator complementary with the coupling formation of annular groove 2 described in Fig. 2, by adjusting the ring
The length of shape slot 2 and the endless metal belt 5 changes the electrical length of the annular groove 2 and the endless metal belt 5, when the annular
When the half-wavelength for the signal that slot 2 and the respective electrical length of the endless metal belt 5 are equal to different frequency, resonance is respectively generated, i.e. institute
Stating annular groove 2 and the endless metal belt 5 has different resonance frequencies；By adjusting the annular groove 2 and the endless metal belt 5
The distance between, it can be coupled out third resonance frequency, according to the intensity of coupling, adjust the bandwidth of resonance band, with outer suppression
Ability processed；In this way, microstrip antenna can be made to filter out the interference letter of three frequency ranges by adjusting the impedance bandwidth of microstrip antenna stopband
Number, it works at least four frequency ranges, to solve the problems, such as successive bands interference.
Generally, the earth plate 6 of microstrip antenna is a plane, is lacked here it is possible to which earth plate 6 is clipped a part and is formed
Fall into ground.
In above-mentioned microstrip antenna, the microstrip feed line 4 in perception, and the earth plate 6 and monopole radiation patch 1 it
Between be in capacitive, can by regulated ground plate 6 arrive monopole radiation patch 1 spacing so that capacitance and inductance value size phase
Deng, cancel out each other, microstrip antenna be in purely resistive, so as to realize the impedance matching of microstrip antenna, in this manner it is achieved that micro-strip
The ultra wide band of antenna.
In addition, the microstrip antenna other than it can be fed by the way of microstrip feed line, can also use coupling
The mode of feed or probe feed is fed.
Based on above-mentioned microstrip antenna, the embodiment of the present invention also provides a kind of mobile terminal, including micro-strip day shown in FIG. 1
Line, as shown in figure 4, the microstrip antenna is positioned close in the PCB circuit board of USB interface position of mobile terminal 7, wherein
The microstrip antenna includes: monopole radiation patch 1, medium substrate 3, microstrip feed line 4；Wherein,
The monopole radiation patch 1 is printed on a side surface of the medium substrate 3；
Be provided with annular groove 2 in the monopole radiation patch 1, the annular groove 2 on the medium substrate 3 relative to institute
The endless metal belt 5 for stating another side surface attachment of monopole radiation patch 1 forms complementary slotted ring resonator, for filtering out interference letter
Number；Here, the endless metal belt 5 is located at the antarafacial of the annular groove 2, is not shown in Fig. 4, specifically may refer to Fig. 1；
The microstrip feed line 4 is connect with the monopole radiation patch 1, is fed for microstrip antenna.
The medium substrate 3 includes at least one layer of medium, and the endless metal belt 5 is generally attached to the medium substrate 3
First layer dielectric surface；
The microstrip antenna further includes earth plate 6, and the earth plate 6 is with the endless metal belt 5 in the same side of medium substrate 3
Surface；
The shape of the monopole radiation patch 1 can have any shape, such as rectangle, circle, polygon or circular ring shape；
The annular groove 2 and the endless metal belt 5 can be round or rectangular.
The endless metal belt 5 slotted ring resonator complementary with the coupling formation of annular groove 2 described in Fig. 2, by adjusting the ring
The length of shape slot 2 and the endless metal belt 5 changes the electrical length of the annular groove 2 and the endless metal belt 5, when the annular
When the half-wavelength for the signal that slot 2 and the respective electrical length of the endless metal belt 5 are equal to different frequency, resonance is respectively generated, i.e. institute
Stating annular groove 2 and the endless metal belt 5 has different resonance frequencies；By adjusting the annular groove 2 and the endless metal belt 5
The distance between, it can be coupled out third resonance frequency, according to the intensity of coupling, adjust the bandwidth of resonance band, with outer suppression
Ability processed；In this way, microstrip antenna can be made to filter out the interference letter of three frequency ranges by adjusting the impedance bandwidth of microstrip antenna stopband
Number, it works at least four frequency ranges, to solve the problems, such as successive bands interference.
Generally, the earth plate 6 of microstrip antenna is a plane, is lacked here it is possible to which earth plate 6 is clipped a part and is formed
Fall into ground.
In above-mentioned microstrip antenna, the microstrip feed line 4 in perception, and the earth plate 6 and monopole radiation patch 1 it
Between be in capacitive, can by regulated ground plate 6 arrive monopole radiation patch 1 spacing so that capacitance and inductance value size phase
Deng, cancel out each other, microstrip antenna be in purely resistive, so as to realize the impedance matching of microstrip antenna, in this manner it is achieved that micro-strip
The ultra wide band of antenna.
In addition, the microstrip antenna other than it can be fed by the way of microstrip feed line, can also use coupling
The mode of feed or probe feed is fed.
Fig. 5 is the flow diagram of the method for microstrip antenna filtering interference signals in the embodiment of the present invention, as shown in figure 5,
This method including the following steps:
Step 501: annular groove, Jie of the annular groove and microstrip antenna are provided in the monopole radiation patch of microstrip antenna
The endless metal belt adhered on matter substrate relative to another side surface of the monopole radiation patch forms complementary slotted ring resonator；
Specifically, outputing annular groove in the monopole radiation patch of microstrip antenna, and relative to institute on medium substrate
Another side surface adhesion metal annulus of monopole radiation patch is stated, the annular groove and the endless metal belt constitute complementary driffractive ring
Resonator；The complementation slotted ring resonator filters out the interference signal of three frequency ranges, according to the frequency range of three interference signals, really
The length and spacing of the fixed annular groove and the endless metal belt；
In this step, the frequency range according to three interference signals determines the annular groove and the endless metal belt
Length and spacing, can be with are as follows: according to half of two interference signal frequency range centre frequencies in three interference signal frequency ranges
Wavelength determines the annular groove and the respective length of the endless metal belt respectively, later according to a remaining interference signal
The half-wavelength of frequency range centre frequency adjusts the spacing of the annular groove and the endless metal belt.
Step 502: microstrip antenna passes through the complementary slotted ring resonator filtering interference signals；
Specifically, microstrip antenna is generated in the frequency range of three interference signals humorous by the complementary slotted ring resonator
Vibration can filter out the interference signal of three frequency ranges, work at least four frequency ranges, to solve asking for successive bands interference
Topic.
Embodiment one
The embodiment of the present invention one is the wireless terminal product using the microstrip antenna, it is desirable that meets W2100(downlink:
2110-2170MHz), LTE band40(2300-2400MHz), WLAN2.4GHz(2484-2496MHz) and LTE band7
The data transmission service of (2500-2690MHz).Wherein, between W2100 and LTE band40, between LTE band40 and WLAN,
Data service between WLAN and LTE band7 is easy to produce interference；
When microstrip antenna works in tetra- W2100, LTE band40, WLAN2.4GHz, LTE band7 different frequency ranges
When, need to filter out the interference between them, in this way, passing through the annular groove 2 and endless metal belt that adjust microstrip antenna as shown in Figure 1
5 length and spacing, wherein the annular groove 2 and the respective length of the endless metal belt 5 are respectively equal to 16mm and 14mm, institute
Stating the distance between annular groove 2 and the endless metal belt 5 is 6.5mm, enables to microstrip antenna work in desired frequency range.
Fig. 6 is the return loss plot figure that the microstrip antenna is used in the embodiment of the present invention one, as shown in Figure 6, wherein
Abscissa is the signal frequency (unit GHz) of microstrip antenna；Ordinate is return loss (unit of the microstrip antenna to induction signal
For dB), it can be seen that microstrip antenna works in W2100, LTEband40, WLAN2.4GHz, LTE band7 frequency range, filters out
Interference between them.
For microstrip antenna described in embodiment one compared with conventional microstrip antenna, size reduces 30%.When traditional micro-strip day
When line realizes multiband, needs to add two minor matters in monopole radiation patch, will lead to microstrip antenna size in this way and add
Greatly.Specifically, a resonance frequency is realized according to λ/2, microstrip antenna work to be realized can be calculated in 2.2-2.3GHz
Frequency range at least needs 32mm, wherein after the bending of additional minor matters, also will increase 5mm in length.So relative to ruler in Fig. 1
For the very little microstrip antenna for 20mm*15mm, conventional microstrip antenna realizes same frequency range size relative increase 30%.
In embodiment one, the spacing between the annular groove and the endless metal belt be it is adjustable, distance range exists
The radius of the annular groove and the endless metal belt is up to the smallest range.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (6)
1. a kind of microstrip antenna, which is characterized in that the microstrip antenna includes: medium substrate, monopole radiation patch and micro-strip feedback
Line, wherein
The monopole radiation patch is printed on a side surface of the medium substrate；
Annular groove is provided in the monopole radiation patch, relative to the monopole on the annular groove and the medium substrate
The endless metal belt of another side surface attachment of radiation patch forms complementary slotted ring resonator, is used for filtering interference signals, wherein institute
The half-wavelength that annular groove and the respective electrical length of the endless metal belt are equal to the signal of different frequency is stated, is respectively provided with different humorous
Vibration frequency；
Third resonance frequency is coupled out between the endless metal belt and the annular groove；
The microstrip feed line is connect with the monopole radiation patch, is fed for microstrip antenna.
2. microstrip antenna according to claim 1, which is characterized in that the medium substrate includes at least one layer of medium, institute
State the first layer dielectric surface that endless metal belt is attached to the medium substrate.
3. microstrip antenna according to claim 1, which is characterized in that the shape of the monopole radiation patch be rectangle,
Round, polygon or circular ring shape.
4. microstrip antenna according to claim 1, which is characterized in that the annular groove and the endless metal belt be it is round or
It is rectangular.
5. a kind of method of microstrip antenna filtering interference signals, which is characterized in that this method comprises:
Annular groove is provided in monopole radiation patch, relative to the monopole radiation patch on the annular groove and medium substrate
The endless metal belt of another side surface attachment form complementary slotted ring resonator, interference letter is filtered out by the complementary slotted ring resonator
Number；
The complementation slotted ring resonator filters out the interference signal of three frequency ranges, according to the frequency range of three interference signals, determines
The length and spacing of the annular groove and the endless metal belt.
6. a kind of mobile terminal, which is characterized in that the mobile terminal includes the described in any item micro-strip days of Claims 1-4
Line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433345.1A CN104466399B (en) | 2013-09-22 | 2013-09-22 | Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals |
| PCT/CN2014/075633 WO2015039433A1 (en) | 2013-09-22 | 2014-04-17 | Microstrip antenna and method for filtering interference signal thereof, and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310433345.1A CN104466399B (en) | 2013-09-22 | 2013-09-22 | Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104466399A CN104466399A (en) | 2015-03-25 |
| CN104466399B true CN104466399B (en) | 2019-03-05 |
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ID=52688153
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310433345.1A Active CN104466399B (en) | 2013-09-22 | 2013-09-22 | Method, the mobile terminal of a kind of microstrip antenna and its filtering interference signals |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104466399B (en) |
| WO (1) | WO2015039433A1 (en) |
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| CN107666034B (en) * | 2016-07-28 | 2024-05-10 | 大唐终端技术有限公司 | Antenna device and mobile terminal |
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| CN113097725A (en) * | 2021-04-19 | 2021-07-09 | 北京邮电大学 | Multi-frequency-band fractal antenna and wireless communication equipment |
| CN113644424A (en) * | 2021-07-05 | 2021-11-12 | 山东师范大学 | Arc-shaped groove trapped wave monopole microstrip antenna based on ultra wide band signal |
| CN115441172B (en) * | 2022-08-31 | 2024-04-12 | 中南大学 | High-gain antenna integrated microwave device of dual-frequency microwave filter |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015039433A1 (en) | 2015-03-26 |
| CN104466399A (en) | 2015-03-25 |
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