CN105119044B - A kind of microstrip antenna and communication device - Google Patents
A kind of microstrip antenna and communication device Download PDFInfo
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- CN105119044B CN105119044B CN201510571599.9A CN201510571599A CN105119044B CN 105119044 B CN105119044 B CN 105119044B CN 201510571599 A CN201510571599 A CN 201510571599A CN 105119044 B CN105119044 B CN 105119044B
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Abstract
The invention discloses a kind of microstrip antenna and communication devices, are related to antenna technical field.Inhibit to invent than undesirable to solve the problems, such as that existing radiation patch is intersected.Radiation patch of the present invention is used for double polarized micro strip antenna, the radiation patch is center symmetric figure, the radiation patch offers cross bath, the crosspoint of the cross bath and the symmetrical centre of the radiation patch mutually coincide, and the radiation patch is divided into four radiating elements being isolated from each other by the cross bath；The radiating element offers feed slot, angle between the center line of the feed slot and the center line of the cross bath is 45 °, the extending direction of the center line of the feed slot is consistent with polarization direction locating for the radiating element where the feed slot, the feed slot is hatch frame, and the opening is located at the outer side edges of the radiating element and towards the outside of the radiating element.The present invention can be used for the design of mobile communication base station antenna.
Description
Technical field
The present invention relates to antenna technical field more particularly to a kind of microstrip antennas and communication device.
Background technique
With the development of antenna technology, the implementation of microstrip antenna is more and more, including cavity-backed radiator antenna, oscillator day
Line, ring Shape antenna, slot antenna, aperture antenna and end-on-fire antenna etc., wherein cavity-backed radiator antenna can be improved antenna because of it
Radiance, and obtained extensive research.
Existing cavity-backed radiator antenna includes radiating element, back cavity main body and feed structure, wherein back cavity main body is usually by light
Sliding metal cavity is constituted.Fig. 1 and Fig. 2 show a kind of existing cavity-backed radiator antenna, including back cavity main body 01, radiation patch
02, transmission line 03 and top plate 04, back 01 upper surface of cavity main body are equipped with square back chamber 011, and the shape of radiation patch 02 is positive
It is rectangular, and the four corners of radiation patch 02 are equipped with feed slot 021, and transmission line 03, transmission line 03 and feed are equipped in feed slot 021
The inner wall of slot 021 is isolated.This structure can carry out LC couple feed to radiation patch 02 by transmission line 03, make radiation patch
02 generates induced current, and later, this 02 edge of radiation patch further can generate capacitor coupling between back 01 side wall of cavity main body
It closes, makes to carry on the back 01 side wall of cavity main body generation horizontal current, to improve the radiance of antenna.
But due to the locating radiation of each side wall for after above-mentioned cavity-backed radiator antenna is formed array, carrying on the back cavity main body 01
Environment can not be completely the same, so that the vector of the horizontal current of slot 021 corresponding two back 04 side wall of cavity main body of a feed
Compound direction is not or not main polarization direction, so that the cross polarization for reducing antenna inhibits ratio.
Summary of the invention
The embodiment of the present invention provides a kind of microstrip antenna and communication device, can improve cross polarization and inhibit ratio, improve
The polarization purity of radiation field.
In order to achieve the above objectives, micro- for dual polarization in a first aspect, the embodiment provides a kind of radiation patch
Band antenna, the radiation patch are center symmetric figure, and the radiation patch offers cross bath, the friendship of the cross bath
Crunode and the symmetrical centre of the radiation patch mutually coincide, and the radiation patch is divided into and is isolated from each other by the cross bath
Four radiating elements；Two radiating elements in four radiating elements are located at+45 ° of polarization directions, other two radiation
Unit is located at -45 ° of polarization directions；The radiating element offers feed slot, the center line and the cross of the feed slot
Angle between the center line of slot is 45 °, the extending direction and the radiation list where the feed slot of the center line of the feed slot
Polarization direction locating for member is consistent, and the feed slot is hatch frame, and the opening is located at the outer side edges of the radiating element
And towards the outside of the radiating element.
In the first mode in the cards of first aspect, with reference to first aspect, the outer side edges of the radiating element
Recess portion is offered, the bottom edge of the recess portion is parallel with the outer side edges of the radiating element.
In second of mode in the cards of first aspect, with reference to first aspect or first aspect the first may
The mode of realization, the radiation patch are square, the cross bath by the radiation patch be divided into four it is equal in magnitude
Radiating element, the radiating element is also square.
It, may according to second of first aspect to first aspect in the third mode in the cards of first aspect
One end of the mode of realization, symmetrical centre of the feed slot close to the radiation patch is enclosed construction.
It, may according to second of first aspect to first aspect in the 4th kind of mode in the cards of first aspect
The mode of realization, the one end of symmetrical centre and the crosspoint of the cross bath of the feed slot close to the radiation patch connect
It is logical.
Radiation patch provided in an embodiment of the present invention since feed slot is hatch frame, and is open and is located at radiating element
Outer side edges and outside towards radiating element, therefore microstrip line can be set in feed slot and be separated by with the inner wall of feed slot
From to realize the LC couple feed between microstrip line and radiating element.Since radiation patch is center symmetric figure, cross bath
Radiation patch is divided into four radiating elements being isolated from each other, keeps the couple current for feeding generation at slot suitable in radiation patch
Transmitted inwards of the cross recess trough rim to radiation patch, therefore the electric current by radiation patch edge can be reduced.With the prior art
It compares, when above-mentioned radiation patch is applied to cavity-backed radiator antenna, the electric current passed through due to reducing radiation patch edge, back
The horizontal current that generates is also corresponding due to coupling to radiation patch edge on chamber side wall reduces, thus when by antenna form array it
Afterwards, the non-master polarized radiation field that the horizontal current Vector modulation of the corresponding two back chamber side wall of a feed slot generates will phase
It should reduce, to reduce the influence to main polarization direction radiation field, improve cross polarization and inhibit ratio, improve radiation field
Polarization purity.
Second aspect, the embodiment provides a kind of microstrip antennas, comprising: metab, the metab
Upper surface be equipped with back chamber；Radiation patch, the radiation patch are radiation patch described in any of the above-described technical solution, the spoke
It penetrates patch and is set to the projection of top and the radiation patch on the metab of the metab and be located at the back
It is intracavitary；Multiple feed slots of multiple transmission lines, multiple transmission lines and the radiation patch correspond, the transmission line
Setting in the feed slot is protruded into one end.
In the first mode in the cards of second aspect, in conjunction with second aspect, the upper surface of the metab
Equipped with printed circuit board, the radiation patch is the copper foil or copper sheet for being set to the printed circuit board upper surface.
It, may in conjunction with the first of second aspect or second aspect in second of mode in the cards of second aspect
The mode of realization, the depth of groove are 0.01 wavelength~0.3 wavelength.
Microstrip antenna provided in an embodiment of the present invention, including radiation patch, transmission line and reference ground, since feed slot is to open
Mouth structure, and the be open outer side edges for being located at radiating element and the outside towards radiating element, therefore microstrip line can be set to feedback
It is isolated in electric slot and with the inner wall of feed slot, to realize the LC couple feed between microstrip line and radiating element.Due to radiation
Patch is center symmetric figure, and radiation patch is divided into four radiating elements being isolated from each other by cross bath, makes to feed at slot
The couple current of generation in radiation patch along cross recess trough rim to the transmitted inwards of radiation patch, therefore can reduce and pass through spoke
Penetrate the electric current at patch edge.Compared with prior art, when above-mentioned radiation patch being applied to cavity-backed radiator antenna, due to reducing spoke
The electric current that patch edge passes through is penetrated, therefore it is also corresponding to carry on the back the horizontal current generated on chamber side wall because coupling to radiation patch edge
Reduce, therefore after antenna is formed array, the horizontal current Vector modulation of the corresponding two back chamber side wall of a feed slot
The non-master polarized radiation field generated will accordingly reduce, to reduce the influence to main polarization direction radiation field, improve
Cross polarization inhibits ratio, improves the polarization purity of radiation field.
The third aspect, it to further include above-mentioned that the embodiment provides a kind of communication devices, including Transceiver Module
Microstrip antenna described in any technical solution, the transmission line of the microstrip antenna are connect with the Transceiver Module.
Communication device provided in an embodiment of the present invention, including Transceiver Module and microstrip antenna, microstrip antenna include spoke
It penetrates patch, transmission line and with reference to ground, since feed slot is hatch frame, and is open and is located at the outer side edges of radiating element and towards spoke
The outside of unit is penetrated, therefore microstrip line can be set in feed slot and be isolated with the inner wall of feed slot, to realize microstrip line
LC couple feed between radiating element.Since radiation patch is center symmetric figure, cross bath divides radiation patch
At four radiating elements being isolated from each other, make to feed the couple current generated at slot in radiation patch along cross recess trough rim to
The transmitted inwards of radiation patch, therefore the electric current by radiation patch edge can be reduced.Compared with prior art, by above-mentioned radiation
Patch be applied to cavity-backed radiator antenna when, the electric current passed through due to reducing radiation patch edge, carry on the back chamber side wall on because with spoke
The horizontal current penetrating the coupling of patch edge and generating also accordingly reduces, therefore after antenna is formed array, a feed slot
The non-master polarized radiation field that the horizontal current Vector modulation of corresponding two back chamber side wall generates will accordingly reduce, to subtract
The small influence to main polarization direction radiation field improves cross polarization and inhibits ratio, improves the polarization purity of radiation field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the top view of the microstrip antenna of the prior art；
Fig. 2 is the cross-sectional view of the microstrip antenna of the prior art；
Fig. 3 is the first structural schematic diagram of radiation patch of the embodiment of the present invention；
Fig. 4 is that the intersection of radiation patch shown in Fig. 3 inhibits the simulation comparison figure of ratio；
Fig. 5 is second of structural schematic diagram of radiation patch of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of microstrip antenna of the embodiment of the present invention；
Fig. 7 is the cross-sectional view of microstrip antenna of the embodiment of the present invention；
Fig. 8 is the standing wave result figure of microstrip antenna shown in Fig. 6.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " height " refers on the direction perpendicular to reference stratum
Projected length；Term " length " is lines overall length.
It is shown a specific embodiment of radiation patch of the embodiment of the present invention, is radiated in the present embodiment referring to Fig. 3, Fig. 3
Patch is used for double polarized micro strip antenna, and the radiation patch is center symmetric figure, and the radiation patch offers cross bath
2, the crosspoint of the cross bath 2 mutually coincides with the symmetrical centre of the radiation patch, and the cross bath 2 is by the spoke
It penetrates patch and is divided into four radiating elements being isolated from each other；Two radiating elements in four radiating elements are located at+45 ° of poles
Change direction, other two radiating element is located at -45 ° of polarization directions；The radiating element offers feed slot 3, the feed slot 3
Center line and the cross bath 2 center line between angle be 45 °, it is described feed slot 3 center line extending direction
Consistent with polarization direction locating for the radiating element where the feed slot 3, the feed slot 3 is hatch frame, the opening position
In the radiating element outer side edges and towards the outside of the radiating element.
Radiation patch provided in an embodiment of the present invention since feed slot 3 is hatch frame, and is open and is located at radiating element
Outer side edges and outside towards radiating element, therefore microstrip line can be set in feed slot 3 and be separated by with the inner wall of feed slot 3
From to realize the LC couple feed between microstrip line and radiating element.Since radiation patch is center symmetric figure, cross bath
2 are divided into radiation patch four radiating elements being isolated from each other, and make to feed the couple current generated at slot 3 in radiation patch
It is transmitted along cross recess trough rim, therefore reduces the electric current by radiation patch outer edge.Compared with prior art, by above-mentioned spoke
When penetrating patch applied to cavity-backed radiator antenna, the electric current passed through due to reducing radiation patch edge, carry on the back on chamber side wall because with
The horizontal current that radiation patch edge is coupled and generated also accordingly reduces, therefore after antenna is formed array, a feed
The non-master polarized radiation field that the horizontal current Vector modulation of slot 3 corresponding two back chamber side walls generates will accordingly reduce, from
And the influence to main polarization direction radiation field is reduced, improving cross polarization inhibits ratio, improves the polarization purity of radiation field.
In the above-described embodiments, cross bath 2 includes two rectangular slots, and the center line of two rectangular slots mutually hangs down
Directly, the extending direction of the center line of rectangular slot is consistent with the extending direction of longer trough rim, this two orthogonal center lines
The as center line of cross bath 2.
Further, it in order to reduce the induced current for carrying on the back chamber side wall, can be opened as shown in Figure 3 in the outer side edges of radiation patch
If recess portion 1, the bottom edge of recess portion 1 and the outer side edges of radiating element are parallel, and groove 1 has zoomed out radiating element outer side edges to back chamber side
The distance of wall to reduce the induced current of back chamber side wall, and then reduces non-master polarized radiation field, improves cross-pole
Change and inhibit ratio, improves the polarization purity of radiation field.
Wherein, the shape of radiation patch can be circle, square, polygon etc., be not specifically limited herein, such as spoke
Penetrating patch can be square as shown in Figure 3, and square radiation patch is divided into four equal-sized spokes by cross bath 2
Unit is penetrated, which is also square, so that the symmetrical structure design of radiation patch is realized, when using including this radiation
When the antenna of patch sends signal, the energy that radiation patch is radiated to all directions is uniform, therefore in distributing network, can should
Antenna is laid in the center of default overlay area, to facilitate the laying of network.
When radiation patch is square, and cross bath 2 by square radiation patch be divided into four it is equal-sized just
When square-shaped radiation unit, in order to guarantee the radiation characteristic of antenna, it is preferable that feed slot 3 is arranged along the diagonal line of radiation patch,
It is that feed slot 3 is arranged along radiation patch diagonal line, has reached ± 45 ° of dual-polarized antenna structure purposes of design, and can pass through
The feed longer trough rim in 3 two sides of slot is uniformly fed to radiating element.
Referring to Fig. 3, feed slot 3 is connected to close to one end of the symmetrical centre of radiation patch with the crosspoint of cross bath 2, this
Radiation patch is divided into multiple Radiation Modules by connectivity structure, and the polarization purity of radiation field can be improved, and plays promotion cross-pole
Change the effect for inhibiting ratio.
As shown in figure 3, the structural parameters of radiation patch of the embodiment of the present invention are as follows: the side length of square radiation patch is 75 millis
Rice, the length and width of cross bath 2 are respectively 59 millimeters, 3.5 millimeters, and the length and width of groove 1 is respectively 35 millimeters, 8 millimeters, feed slot
3 width is 3 millimeters；The structural parameters of prior art radiation patch are as follows: the side length of square radiation patch 02 is 75 millimeters, in
The length and width of crux of heart slot is respectively 59 millimeters, 3.5 millimeters, and the width of feed slot 021 is 3 millimeters.The working frequency range of radiation patch
For 1.71-2.17GHz.Cross polarization is carried out to radiation patch of the embodiment of the present invention and prior art radiation patch respectively and inhibits ratio
Emulation obtains cross polarization of the azimuth (Theta) within the scope of -60 °~+60 ° and inhibits ratio as shown in figure 4, in Fig. 4, dotted line
Indicate that the cross polarization of radiation patch of the embodiment of the present invention inhibits ratio and the relation curve between azimuth (Theta), solid line table
Show that the cross polarization of prior art radiation patch inhibits ratio and the relation curve between azimuth (Theta), cross-pole herein
Change and inhibits to be expressed as the ratio of radiation field main polarization component and cross polar component than as cross polarization ratio, it can from Fig. 4
Out, azimuth is within the scope of -60 °~+60 °, compared with the prior art, using the intersection of radiation patch structure of the embodiment of the present invention
Polarization inhibits bigger, for example, when azimuth is -60 °, the cross polarization inhibition ratio of radiation patch of the embodiment of the present invention is
12.2217dB, the cross polarization of prior art radiation patch inhibit than being 5.1700dB, the friendship of radiation patch of the embodiment of the present invention
Fork polarization inhibits bigger；When azimuth is 60 °, the cross polarization inhibition ratio of radiation patch of the embodiment of the present invention is
10.0747dB, the cross polarization of prior art radiation patch inhibit than being 7.0045dB, the friendship of radiation patch of the embodiment of the present invention
Fork polarization inhibits bigger, and the signal in orthogonal for thus illustrating that radiation patch of the embodiment of the present invention can obtain is stronger, two-way letter
Correlation between number is smaller, and polarization effect is preferable.
Optionally, referring to Fig. 5, feed slot 3 is enclosed construction close to one end of the symmetrical centre of radiation patch.This structure with
Feed slot structure described in above-described embodiment is able to solve identical technical problem, and reaches identical desired effect.
Referring to Fig. 6 and Fig. 7, Fig. 6 and Fig. 7 show a specific embodiment of microstrip antenna of the embodiment of the present invention, this reality
Applying microstrip antenna in example includes: metab 6, and the upper surface of the metab 6 is equipped with back chamber 8；Radiation patch 100, it is described
Radiation patch is radiation patch described in any of the above-described embodiment, and the radiation patch is set to the top of the metab 6
And the radiation patch is located in the back chamber 8 in the projection on the metab 6；Multiple transmission lines 4, multiple transmission
Line 4 and multiple feed slots 3 of the radiation patch correspond, and one end of the transmission line 4 is protruded into the feed slot 3 and set
It sets.
In each embodiment of the radiation patch 100 as used in the microstrip antenna in the present embodiment and above-mentioned radiation patch
The radiation patch of offer is identical, therefore the two is able to solve identical technical problem, and reaches identical desired effect.
In the above-described embodiments, the material of radiation patch 100 is metal, copper is generallyd use, to radiate or receive signal.
Further, radiation patch 100 can be copper sheet, can also be to be attached to one piece of PCB (Printed circuit board, print
Circuit board processed) on copper foil.When using the first above-mentioned scheme, i.e., radiation patch 100 is copper sheet, in order to by transmission line 4
One end is set in the feed slot 3 of radiation patch 100, it is necessary to other structures is connected, to fix radiation patch 100 and transmission line 4
Relative position, for example radiation patch 100 and transmission line 4 can be fixed on one flat plate by viscose glue or plastic screw
Surface, and the relative position of radiation patch 100 Yu transmission line 4 is limited, this attended operation takes a long time, and efficiency is lower, and positions
It is complicated for operation, it is difficult to guarantee the consistency of production target.Therefore, in order to avoid the above problem, preferably radiation patch 100 is attachment
Copper foil on one piece of pcb board, transmission line 4 is similarly the copper foil on the pcb board at this time, since PCB showing methods precision is very high,
Therefore it ensure that the consistency of production target.
Wherein, the pcb board for radiation patch 100 being arranged can be directly arranged at 6 upper surface of metab, can also be first
It is connect with one flat plate, then this plate is fixed on 6 upper surface of metab.When using above-mentioned second scheme, connection behaviour
Make complex, is easy to cause positioning inaccurate, it is difficult to guarantee the consistency of production target, and pcb board connect increase day with plate
The height of line is unfavorable for the Miniaturization Design of antenna.Therefore, in order to avoid the above problem, the preferably pcb board of radiation patch 100
It can be directly arranged at 6 upper surface of metab, as shown in fig. 7, when pcb board is set to 6 upper surface of metab, PCB
Plate 7 includes opposite first surface 71 and second surface 72, and radiation patch 100 and transmission line 4 are printed on the first surface of pcb board
71, it is only necessary to metab 6 be connected by plastic screw or viscose glue and the assembly of antenna, assembling process letter can be realized in pcb board 7
It is single, it is easy to operate, and accurate positioning, so that the production target consistency of antenna be effectively ensured.
In addition, it to be straight line that feed 3 part of slot is not extended on transmission line 4, it can also be curve, it is not limited here；
And transmission line 4 protrude into feed 3 part of slot it is generally-straight, and the straight line with feed slot 3 center line be overlapped, i.e., transmission line 4 is stretched
Enter to feed groove portion and assign to being equidistant for feed 3 two sides of slot, to guarantee the radiation characteristic of antenna.
In order to which indexs, the input signal amplitudes of like-polarized two transmission lines 4 such as the polarization isolation that improves antenna are equal
And 180 ° of phase phase difference, this feeding classification is known as balanced feeding.
Antenna is generally included with reference to ground, includes the ginseng of radiation patch 100 with reference to ground in Fig. 6 and embodiment shown in Fig. 7
Examine and transmission line 4 reference ground, be generally disposed to reference of radiation patch 100 carry on the back chamber 8 on, i.e., radiation patch 100 reference
Ground is the bottom surface 51 for carrying on the back chamber 8；It is protruded into feed slot 3 and is arranged due to one end of transmission line 4, one of the reference of transmission line 4 ground
It is divided into the bottom surface 51 of back chamber 8, the second surface in the upper surface of metab 6 52 or pcb board 7 can be set in another part
72, the energy radiated with reflected radiation patch 100.
Wherein, it is protruded into feed slot 3 and is arranged due to one end of transmission line 4, worked as through transmission line 4 to radiation patch
100 couple feeds, and electric feed signal by transmission line 4 and be transmitted to transmission line 4 protrude into feed slot 3 one end when, transmission line 4
The bottom surface 51 for becoming carrying on the back chamber 8 from second surface 72 or 6 upper surface 52 of metab with reference to ground, is zoomed out with reference to ground, can introduce one
Fixed awareness character；The coupling feed way that transmission line 4 and feed slot 3 are constituted can introduce certain capacitive feature；In this way whole
Capacitive and perceptual relative equilibrium in a feeding network, to expand the bandwidth characteristic of the antenna.
Furthermore metab 6 can make for non-conductive material, conductor material is laid with shape in back 8 bottom surface of chamber and side
At the back chamber 8 of antenna, metab 6 can also be directly designed to be made by metal material.When using the first above-mentioned scheme,
It needs to be laid with the making step of conductor material, therefore the complex manufacturing technology of metab 6 in back 8 bottom surface of chamber and side, and works as
When conductor material-paving is uneven, the reflecting effect with reference to ground is poor.Therefore, in order to avoid the above problem, preferably by metal bottom
Seat 6 is directly designed to be made by metal material, avoids and is laid with the making step of conductor material in back 8 bottom surface of chamber and side, directly
It connects to form back chamber 8, to simplify the manufacture craft of metab 6, and can be using the upper surface of metab 6 as with reference to ground
A part, avoid on the second surface 72 of pcb board 7 setting with reference to the operation on ground, to simplify the production of pcb board 7
Technique.
The manufacture craft for carrying on the back chamber 8 can also be able to be by multiple metal side plates to open up back chamber 8 in the upper surface of metal plate
Lower end is connected on metal base plate, surrounds back chamber 8 by multiple metal side plate and bottom plate.When using above-mentioned second scheme
When, the attended operation of metal base plate and multiple metal side plates complicates the manufacture craft of back chamber 8.Therefore preferably in metal plate
Upper surface open up back chamber 8, can avoid metal base plate and multiple metal side plates attended operation, thus simplify carry on the back chamber 8 system
Make technique.
In order to guarantee to reduce the volume of antenna as much as possible while widening aerial radiation bandwidth, as shown in FIG. 6
In embodiment, the volume of antenna is determined by the thickness of antenna and the width of antenna, and the thickness of antenna is determined by the depth of back chamber 8
Fixed, the width of antenna is determined by the side length of radiation patch 100.Therefore, in order to reduce the volume of antenna, it can reduce back chamber 8
The side length of depth and radiation patch 100, and when carrying on the back the depth of chamber 8 less than 0.01 wavelength, and when the side length of radiation patch 100
When less than 0.25 wavelength, the standing wave of antenna is poor or radiation efficiency is very low.It is preferred, therefore, that the depth of back chamber 8 is 0.01 wave
Long~0.3 wavelength, the side length of radiation patch 100 are 0.25 wavelength~0.5 wavelength.Antenna in above-mentioned size range can achieve
The purpose of design of antenna miniaturization, and can guarantee the standing wave and radiation characteristic of antenna.
In order to largely reflect radiation energy, the region area on the reference ground 51 of radiation patch 100 should be big
In the area of radiation patch 100, and view field of the radiation patch 100 on the reference ground 51 of radiation patch 100 entirely falls within
In 51 regions of reference ground of radiation patch 100, in order to reach antenna miniaturization purpose of design, the reference ground 51 of radiation patch 100
Region area should be designed smaller.It is therefore preferred that the boundary and 100 side of radiation patch on the reference ground 51 of radiation patch 100
The lateral shortest distance between boundary is 0.01 wavelength~0.03 wavelength, and the antenna in this size range can be largely right
Radiation energy is reflected, and can reach the purpose of design of antenna miniaturization.
In a kind of specific embodiment of the invention, as shown in Figure 6 and Figure 7, microstrip antenna include radiation patch 100,
Transmission line 4, metab 6, back chamber 8 and pcb board 7.Wherein, the width of transmission line 4 is 0.6 millimeter, and transmission line 4 protrudes into feed slot
The length of 3 parts is 9.5 millimeters, the parameter of radiation patch 100 are as follows: the side length of square radiation patch 100 is 75 millimeters, cross
The length and width of shape slot 2 is respectively 59 millimeters, 3.5 millimeters, and the length and width of four elongated slots 1 is respectively 35 millimeters, 8 millimeters, feeds slot 3
Width is 3 millimeters.Standing wave test is carried out to above-mentioned antenna, standing wave result figure is as shown in figure 8, as can be seen from Figure 8, standing wave is small
Working frequency range when 1.5 is 1710-2170MHz, then according to the calculation formula of bandwidth: bandwidth=2 (fH-fL)/(fH+fL),
In, fHIndicate maximum operating frequency, fLIndicate lowest operating frequency, then working frequency range is bandwidth=2 of 1710-2170MHz
(2170-1710)/(2170+1710)=23.7%, at this point, it is only 17mm that radiation patch 100, which is arrived with reference to the distance between ground 5,
To reach miniaturization, broadband purpose of design.
The peripheral feeding network of transmission line 4 can be metal probe, coaxial line, radio frequency connector, cable or waveguide etc.
Deng being not limited thereto.
In order to further expand the radiation bandwidth of antenna, parasitic spoke can be increased in any position around radiation patch 100
Unit is penetrated, the parasitic element of the parasitic radiation element can produce another new resonance frequency, when the resonance frequency and radiation
When the working frequency range of patch 100 is close, the working frequency range of antenna is expanded, it is thus achieved that Antenna Operation bandwidth into one
Step is expanded.
The embodiment of the invention also provides a kind of communication devices, including Transceiver Module, further include any of the above-described implementation
Microstrip antenna described in example, the microstripline feed network of the microstrip antenna are connect with the Transceiver Module.
It is mentioned in the microstrip antenna as used in the communication device in the present embodiment and each embodiment of above-mentioned microstrip antenna
The microstrip antenna of confession is identical, therefore the two is able to solve identical technical problem, and reaches identical desired effect.
It specifically, can be by coaxially connecting when the microstripline feed network of microstrip antenna is connect with the Transceiver Module
Device connection is connect, or the microstripline feed network of microstrip antenna can directly be connect with the microstrip line on Transceiver Module.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. a kind of microstrip antenna characterized by comprising
Metab, the upper surface of the metab are equipped with back chamber；
Radiation patch, the radiation patch are center symmetric figure, and the radiation patch offers cross bath, the cross
The crosspoint of slot and the symmetrical centre of the radiation patch mutually coincide, and the radiation patch is divided into that by the cross bath
Four radiating elements of this isolation, two radiating elements in four radiating elements are located at+45 ° of polarization directions, and in addition two
A radiating element is located at -45 ° of polarization directions, and the radiating element offers feed slot, the center line of the feed slot with it is described
Angle between the center line of cross bath is 45 °, where the extending direction and the feed slot of the center line of the feed slot
Polarization direction locating for radiating element is consistent, and the feed slot is hatch frame, and the opening is located at the outer of the radiating element
Side and towards the outside of the radiating element, the radiation patch is set to the top of the metab and the radiation is pasted
It is intracavitary that projection of the piece on the metab is located at the back；
Multiple transmission lines, multiple transmission lines are located at the outer edge of the radiation patch, multiple transmission lines and the spoke
The multiple feed slots for penetrating patch correspond, and setting in the feed slot is protruded into one end of the transmission line.
2. microstrip antenna according to claim 1, which is characterized in that the upper surface of the metab is equipped with printed circuit
Plate, the radiation patch are the copper foil or copper sheet for being set to the printed circuit board upper surface.
3. microstrip antenna according to claim 1 or 2, which is characterized in that the back chamber depth is 0.01 wavelength~0.3 wave
It is long.
4. microstrip antenna according to claim 1, which is characterized in that the outer side edges of the radiating element offer recess portion,
The bottom edge of the recess portion is parallel with the outer side edges of the radiating element.
5. microstrip antenna according to claim 1, which is characterized in that the radiation patch is square, the cross
The radiation patch is divided into four equal-sized radiating elements by slot, and the radiating element is also square.
6. microstrip antenna according to claim 1, which is characterized in that the feed slot is close to the symmetrical of the radiation patch
The one end at center is enclosed construction.
7. microstrip antenna according to claim 1, which is characterized in that the feed slot is close to the symmetrical of the radiation patch
The one end at center is connected to the crosspoint of the cross bath.
8. a kind of communication device, including Transceiver Module, which is characterized in that further include that claim 1 to 7 is described in any item
Microstrip antenna, the transmission line of the microstrip antenna are connect with the Transceiver Module.
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| CN201510571599.9A CN105119044B (en) | 2015-09-09 | 2015-09-09 | A kind of microstrip antenna and communication device |
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| CN201510571599.9A CN105119044B (en) | 2015-09-09 | 2015-09-09 | A kind of microstrip antenna and communication device |
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| CN105119044B true CN105119044B (en) | 2019-01-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105655702B (en) * | 2016-03-30 | 2019-07-26 | 上海安费诺永亿通讯电子有限公司 | A kind of low section small capacity double polarization antenna for base station |
| CN106532249B (en) * | 2016-12-28 | 2023-11-17 | 华南理工大学 | Compact elliptical annular dual-polarized base station antenna |
| CN106684549B (en) * | 2017-01-09 | 2023-11-17 | 华南理工大学 | Compact elliptical bending annular dual-polarized broadband base station antenna |
| CN108987922B (en) * | 2018-08-27 | 2023-09-01 | 一汽-大众汽车有限公司 | Antenna |
| CN110098477B (en) * | 2019-05-16 | 2022-08-26 | 京信通信技术(广州)有限公司 | Radiation structure and array antenna |
| CN112421231B (en) * | 2020-10-23 | 2024-07-23 | 普联国际有限公司 | High-isolation antenna |
| CN115249893A (en) * | 2021-04-25 | 2022-10-28 | 华为技术有限公司 | Antenna unit and manufacturing method thereof, array antenna, radar and terminal |
| CN116780175B (en) * | 2023-07-18 | 2024-04-16 | 南通至晟微电子技术有限公司 | Broadband millimeter wave end-fire antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346854A (en) * | 2005-12-27 | 2009-01-14 | 罗伯特.博世有限公司 | Antenna arrangement and use thereof |
| CN101673881A (en) * | 2009-10-16 | 2010-03-17 | 京信通信系统（中国）有限公司 | Broadband dual-polarized array antenna and plane dipole thereof |
| CN103474756A (en) * | 2013-09-10 | 2013-12-25 | 华为技术有限公司 | Radiation patch for microstrip antenna and microstrip antenna |
| EP2835861A1 (en) * | 2011-11-04 | 2015-02-11 | Brocoli Co., Ltd. | Slotted augmented antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9711853B2 (en) * | 2013-08-07 | 2017-07-18 | Huawei Technologies Co., Ltd. | Broadband low-beam-coupling dual-beam phased array |
-
2015
- 2015-09-09 CN CN201510571599.9A patent/CN105119044B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346854A (en) * | 2005-12-27 | 2009-01-14 | 罗伯特.博世有限公司 | Antenna arrangement and use thereof |
| CN101673881A (en) * | 2009-10-16 | 2010-03-17 | 京信通信系统（中国）有限公司 | Broadband dual-polarized array antenna and plane dipole thereof |
| EP2835861A1 (en) * | 2011-11-04 | 2015-02-11 | Brocoli Co., Ltd. | Slotted augmented antenna |
| CN103474756A (en) * | 2013-09-10 | 2013-12-25 | 华为技术有限公司 | Radiation patch for microstrip antenna and microstrip antenna |
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