CN101982898A - Millimetre wave planar antenna and array thereof - Google Patents
Millimetre wave planar antenna and array thereof Download PDFInfo
- Publication number
- CN101982898A CN101982898A CN2010102653593A CN201010265359A CN101982898A CN 101982898 A CN101982898 A CN 101982898A CN 2010102653593 A CN2010102653593 A CN 2010102653593A CN 201010265359 A CN201010265359 A CN 201010265359A CN 101982898 A CN101982898 A CN 101982898A
- Authority
- CN
- China
- Prior art keywords
- bar
- shaped trough
- medium substrate
- metal patch
- right angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a millimetre wave planar antenna and an array thereof, wherein the millimetre wave planar antenna includes a metal patch, a medium substrate, a metal floor board and ground poles, the metal patch is placed on an upper surface of the medium substrate, and a lower surface of the medium substrate is fixed with an upper surface of the metal floor board; the metal patch is parallel to the upper surface of the metal floor board; the metal patch is provided with at least one pair of same first bar-shaped channels, each pair of first bar-shaped channels are distributed in bilateral symmetry form, symmetrical centre lines of each pair of bar-shaped channels are superposed, a centre line in a length direction of each first bar-shaped channel is parallel to each other, and length of each first bar-shaped channel is 1/2 of an operating wavelength; the ground poles vertically penetrate through the medium substrate, the ground poles are circularly distributed at intervals at the periphery of a region where the first bar-shaped channels are distributed, and two ends of each ground pole are respectively contacted with the metal patch and the metal floor board. The invention can reduce loss of a millimetre wave antenna, improve radiation efficiency of the millimetre wave antenna, simultaneously, guarantee work bandwidth of the antenna, and improve antenna gain.
Description
Technical field
The present invention relates to work in the flat plane antenna and the planar antenna array of millimere-wave band.
Background technology
Flat plane antenna, for example micro-strip paster antenna and plane slot antenna etc., are easy to advantage such as integrated, convenient production in enormous quantities and are widely used in the various Modern Communication System, low cost of manufacture in light weight owing to it.But there are various defectives in traditional flat plane antenna in millimere-wave band, for example easily the excitating surface ripple, directional diagram is inhomogeneous, frequency band is narrow, antenna radiation efficiency is low etc.Defectives such as the exciting of surface wave makes that flat plane antenna exists directional diagram to worsen, gain reduces, bandwidth narrows down, loss increase and antenna radiation efficiency reduction.Dielectric loss, conductor losses, surface wave loss are the main causes that causes the flat plane antenna antenna radiation efficiency low.Lower for operating frequency, dielectric substrate thickness is much smaller than the flat plane antenna of operation wavelength, and dielectric loss and conductor losses are less, and the surface wave loss can be ignored.Increase along with operating frequency, when wavelength is reduced to millimere-wave band, the dielectric loss of flat plane antenna and conductor losses increase, and the surface wave loss increases and along with the relative size of dielectric substrate thickness and wavelength becomes greatly and become the principal element that influences flat plane antenna loss and antenna radiation efficiency.
In order to suppress or to eliminate surface wave, reach the loss that reduces millimeter wave antenna, the purpose that improves the millimeter wave antenna radiation efficiency, domestic and international research work mainly concentrates on following both direction: form periodic electromagnetism bandgap structure (EBG) by punching at scoring on the metal floor or in medium substrate and suppress surface wave; Utilize micromachined technology (Micromachining Technique) structure air dielectric substrate, eliminate surface wave and reduce dielectric loss simultaneously.Electromagnetic bandgap structure mainly by form the forbidden band of surface wave transmission near the central task frequency, suppresses the transmission of surface wave, or surface wave is transmitted the frequency range that is directed to away from the central task frequency.The shortcoming of the millimeter wave antenna maximum of this method development is that volume is very big, and course of processing complexity is not easy to integrated simultaneously.Often volume is bigger to utilize the millimeter wave antenna of micromachined technology development, is unfavorable for microstripline integratedly, is not suitable for constituting large-scale millimeter-wave planar aerial array simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of millimeter-wave planar antenna and array thereof that reduces loss, improves antenna radiation efficiency is provided.
For achieving the above object, the technical solution used in the present invention is specific as follows: wherein a kind of millimeter-wave planar antenna of the present invention comprises metal patch, medium substrate, metal floor and earthing rod, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Have a pair of above first identical bar-shaped trough on the described metal patch, every pair first bar-shaped trough is left-right symmetric and distributes, the symmetrical center line of every pair first bar-shaped trough overlaps, and the center line of the length direction of each first bar-shaped trough is parallel to each other, and the length of each first bar-shaped trough is 1/2 of operation wavelength; Described earthing rod vertically runs through medium substrate, and described earthing rod is circumferentially spaced apart on the periphery edge of the first bar-shaped trough region, and the two ends of each earthing rod contact with metal patch, metal floor respectively.
Further, the thickness of medium substrate of the present invention is 1/4~1/3 of operation wavelength.
Further, also have the second a pair of identical bar-shaped trough on the metal patch of the present invention, should be in each described earthing rod surrounded zone and should be up and down second bar-shaped trough and be symmetrically distributed to second bar-shaped trough, the center line of the length direction of second bar-shaped trough is parallel to each other, described first bar-shaped trough is a pair of, the symmetrical center line of first bar-shaped trough is vertical with the symmetrical center line of second bar-shaped trough, the length of second bar-shaped trough is 1/4~3/4 of operation wavelength, and each first bar-shaped trough, second bar-shaped trough are spaced apart each other.
Further, second bar-shaped trough of the present invention is identical with first bar-shaped trough, and the center line of the length direction of first bar-shaped trough is equal to the center line of length direction of second bar-shaped trough to the distance of the symmetrical center line of second bar-shaped trough to the distance of the symmetrical center line of first bar-shaped trough.
Another kind of millimeter-wave planar antenna of the present invention comprises metal patch, medium substrate, metal floor and earthing rod, and described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Have four identical right angle L type grooves on the described metal patch, these four right angle L type grooves surround a rectangular area, the summit, right angle of each right angle L type groove is respectively four summits of described rectangular area, the interior angle of two described right angle L type grooves at same diagonal two ends that is positioned at described rectangular area is relative, four right angle L type grooves are left-right symmetric and symmetrical distribution up and down, and each right angle L type groove is spaced apart each other; The length of side on adjacent two limits of described rectangular area is 1/4~3/4 of an operation wavelength; Described earthing rod vertically runs through medium substrate, and described earthing rod is circumferentially spaced apart on the periphery edge, rectangular area that four right angle L type grooves are surrounded, and the two ends of each earthing rod contact with metal patch, metal floor respectively.
Further, the thickness of medium substrate of the present invention is 1/4~1/3 of operation wavelength.
Further, the length of side of adjacent two right-angle sides of right angle of the present invention L type groove equates; The length of side on adjacent two limits of described rectangular area equates and is 1/2 of operation wavelength.
A kind of millimeter-wave planar aerial array of the present invention comprises metal patch, medium substrate, metal floor and earthing rod, the thickness of described medium substrate is 1/4~1/3 of operation wavelength, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Described earthing rod vertically runs through medium substrate, and the two ends of each earthing rod contact with metal patch, metal floor respectively; The orthographic projection of described earthing rod on metal patch forms the rectangular area that is made of m * n square subregion, described earthing rod correspondingly is positioned in the orthographic projection on the metal patch on each boundary line of each square subregion, is provided with antenna radiation unit in each square subregion on metal patch; Each described antenna radiation unit is made up of with two second bar-shaped troughs identical with first bar-shaped trough two first bar-shaped troughs, described first bar-shaped trough and second bar-shaped trough surround square area, and this square area overlaps with the diagonal of the described square subregion at this antenna radiation unit place; The center line of the length direction of two first bar-shaped troughs is parallel to each other and two first bar-shaped troughs are left-right symmetric, the center line of the length direction of two second bar-shaped troughs is parallel to each other and two second bar-shaped troughs are symmetry up and down, the length of first bar-shaped trough and second bar-shaped trough is 1/2 of operation wavelength, the symmetrical center line of first bar-shaped trough is vertical with the symmetrical center line of second bar-shaped trough, the distance of the symmetrical center line of the center line of the length direction of first bar-shaped trough and two first bar-shaped troughs equals the distance of the symmetrical center line of the center line of length direction of second bar-shaped trough and two second bar-shaped troughs, each first bar-shaped trough, second bar-shaped trough is spaced apart each other.
Another kind of millimeter-wave planar aerial array of the present invention comprises metal patch, medium substrate, metal floor and earthing rod, the thickness of described medium substrate is 1/4~1/3 of operation wavelength, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Described earthing rod vertically runs through medium substrate, and the two ends of each earthing rod contact with metal patch, metal floor respectively; The orthographic projection of described earthing rod on metal patch forms the rectangular area that is made of m * n square subregion, described earthing rod correspondingly is positioned on each boundary line of each square subregion in the orthographic projection on the metal patch, in each square subregion, on metal patch, be provided with antenna radiation unit, each described antenna radiation unit is made up of four identical right angle L type grooves, described four right angle L type grooves surround a square area, the summit, right angle of each right angle L type groove is respectively four summits of described square area, the interior angle of two described right angle L type grooves at same diagonal two ends that is positioned at described square area is relative, four right angle L type grooves are left-right symmetric and symmetrical distribution up and down, and each right angle L type groove is spaced apart each other; The length of side of described square area is 1/2 of an operation wavelength; This square area overlaps with the diagonal of the described square subregion at this antenna radiation unit place; The length of side of adjacent two right-angle sides of described right angle L type groove equates.
Compared with prior art, the invention has the beneficial effects as follows:
(1) during the work of traditional micro-strip paster antenna, electromagnetic field distributes and mainly concentrates in the medium substrate, especially concentrates on the fringe region of microband paste.The present invention makes flat plane antenna when work electromagnetic field mainly be distributed in institute by the mode of slotting and opens in first bar-shaped trough that compare dielectric loss with conventional microsthp patch antennas lower on metal patch; Simultaneously by open the symmetrical distribution more than a pair of on the metal patch, first bar-shaped trough that is parallel to each other makes antenna pattern even.At interval earthing rod is set by periphery along circumferential, but the lateral transport of truncated table ground roll is eliminated the surface wave loss, improves antenna radiation efficiency, makes flat plane antenna of the present invention be particularly suitable for the application of millimeter-wave planar antenna in the first bar-shaped trough region.
(2) millimeter-wave planar antenna of the present invention is provided with first bar-shaped trough, second bar-shaped trough on metal patch, this antenna structure has dielectric loss and does not become big characteristic with the thickness increase of medium substrate, simultaneously because earthing rod has been eliminated surface wave, make the thickness of medium substrate to arrive and be increased to 1/4~1/3 of operation wavelength, thereby make millimeter-wave planar antenna of the present invention when reducing loss, guarantee bandwidth of operation, and the raising antenna gain, optimize the antenna overall performance.
(3) the present invention substitutes described a pair of first bar-shaped trough and a pair of second bar-shaped trough by four right angle L type grooves are set on metal patch, and this antenna structure has dielectric loss equally and do not become big characteristic with the thickness increase of medium substrate.Periphery in L type groove region, four right angles is provided with earthing rod at interval along circumferential, has eliminated the surface wave loss, improves antenna radiation efficiency.Because the elimination of surface wave, arriving by the thickness that increases medium substrate is 1/4~1/3 of operation wavelength, makes the antenna bandwidth of operation increase, and antenna gain improves, and the antenna integral working is optimized.
(4) the first a pair of identical bar-shaped trough and a pair of identical second bar-shaped trough or four identical right angle L type grooves formation left-right symmetric and laterally zygomorphic antenna structures are opened in millimeter-wave planar antenna of the present invention and array utilization thereof on metal patch, can conveniently realize linear polarization, dual linear polarization and circular polarization when adopting different feeds.
(5) the present invention as antenna radiation unit, constitutes aerial array in the periphery of each antenna radiation unit along earthing rod circumferentially is set at interval with the first a pair of identical bar-shaped trough and a pair of identical second bar-shaped trough or four identical right angle L type grooves.Earthing rod blocks the surface wave of lateral transport and can eliminate the surface wave loss, improve antenna radiation efficiency, eliminates simultaneously between antenna radiation unit because the coupling loss of reduction planar antenna array of the present invention is closed in the mutual coupling that surface wave causes.Thickness by increasing medium substrate is to making millimeter-wave planar aerial array bandwidth of operation of the present invention increase for 1/4~1/3 of operation wavelength, and antenna gain improves, the optimization of antenna integral working.
Description of drawings
Fig. 1 is the millimeter-wave planar antenna structure view;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is a millimeter wave circular polarization plane antenna structure view;
Fig. 4 is a millimeter-wave planar right angle L type slot antenna structural representation;
Fig. 5 is a millimeter-wave planar antenna array structure schematic diagram;
Fig. 6 is the antenna radiation unit structural representation that is made of first bar-shaped trough and second bar-shaped trough;
Fig. 7 is the antenna radiation unit structural representation that is made of right angle L type groove.
Embodiment
As depicted in figs. 1 and 2, millimeter-wave planar antenna of the present invention comprises metal patch 2, medium substrate 1, metal floor 5 and earthing rod 4, metal patch 2 is pasted or is positioned on the upper surface of medium substrate 1, and the upper surface of the lower surface of medium substrate 1 and metal floor 5 is fixed.In the present invention, have a pair of above first identical bar-shaped trough on the metal patch 2.Then have two pairs of first identical bar-shaped troughs in the embodiment shown in fig. 1, wherein, first bar-shaped trough 31 and first bar-shaped trough 31 ' are a pair of, and another is to being first bar-shaped trough 32 and first bar-shaped trough 32 '.First bar-shaped trough 31 and first bar-shaped trough 31 ' are that symmetrical center line is the left-right symmetric distribution with straight line kk ', form first pair first bar-shaped trough.The center line a of the length direction of first bar-shaped trough 31
1b
1Center line a with the length direction of first bar-shaped trough 31 '
1' b
1' be parallel to each other.First bar-shaped trough 32 and first bar-shaped trough 32 ' are that symmetrical center line is the left-right symmetric distribution with straight line kk ' also, form second pair first bar-shaped trough, the center line a of the length direction of first bar-shaped trough 32
2b
2Center line a with the length direction of first bar-shaped trough 32 '
2' b
2' be parallel to each other.As from the foregoing, the symmetrical center line of first pair first bar-shaped trough and second pair first bar-shaped trough overlaps.Because first pair first bar-shaped trough 31 all is symmetrical distribution and parallel respectively mutually with first bar-shaped trough 31 ' and second pair first bar-shaped trough 32 and first bar-shaped trough 32 ', make millimeter-wave planar antenna of the present invention be compared to traditional planar slot antenna, the far zone field antenna pattern is even.The length of each first bar-shaped trough is 1/2 of operation wavelength, is f with the central task frequency that guarantees millimeter-wave planar antenna of the present invention
oOperation wavelength and central task frequency f
oAnd medium substrate 1 selected material is relevant.Each earthing rod 4 vertically runs through medium substrate 1, and the two ends of each earthing rod 4 contact with metal patch 2, metal floor 5 respectively.Each earthing rod 4 is circumferentially spaced apart on the periphery edge of first bar-shaped trough 32 and first bar-shaped trough, 32 ' region, makes each first bar-shaped trough be positioned at the zone that line surrounded by the geometric center of the orthographic projection of each earthing rod 4 on metal patch 2.According to the total reflection theory, surface wave forms at the interface of medium substrate 1 and air.Surface wave in medium substrate 1 along lateral transport to earthing rod during 4 positions, earthing rod 4 changes the boundary condition of surface wave transmission, block the lateral transport of surface wave, eliminated the surface wave loss of millimeter-wave planar antenna of the present invention, increased substantially antenna radiation efficiency.Simultaneously, because electromagnetic field mainly was distributed in each first bar-shaped trough and in ambient air and the medium substrate 1 when millimeter-wave planar antenna of the present invention was worked, each earthing rod 4 does not influence the field distribution in each first bar-shaped trough, guarantees that when eliminating surface wave other service behaviours of antenna are unaffected.The implementation of the earthing rod 4 of millimeter-wave planar antenna of the present invention is compared to periodic electromagnetism bandgap structure (EBG) or micromachined technology (Micromachining Technique), and is low to technological requirement, processes more convenient.
Further, the thickness of the medium substrate 1 in the millimeter-wave planar antenna of the present invention is 1/4~1/3 of operation wavelength.For traditional flat plane antenna, the thickness of medium substrate should not be greater than 1/10 operation wavelength, otherwise can excite strong surface wave, causes that directional diagram worsens, and brings increasing considerably of surface wave loss.And during millimeter-wave planar antenna of the present invention work, because metal patch is provided with first bar-shaped trough, electromagnetic field mainly is distributed in each first bar-shaped trough and in ambient air and the medium substrate 1, thereby the dielectric loss of millimeter-wave planar antenna of the present invention does not become big with the thickness increase of medium substrate 1.Earthing rod 4 has been eliminated surface wave simultaneously, makes the thickness of medium substrate 1 can increase to 1/4~1/3 of operation wavelength, thereby makes millimeter-wave planar antenna of the present invention guarantee bandwidth of operation when reducing loss.When the thickness of medium substrate 1 less than operation wavelength 1/4 or greater than operation wavelength 1/3 the time, the antenna gain of millimeter-wave planar antenna of the present invention begins to reduce, bandwidth of operation begins to narrow down.
Further, the thickness of millimeter-wave planar antenna medium substrate 1 of the present invention is about 1/4 of operation wavelength.According to the image theory in the electro magnetic field electromagnetic ripple theory, for being positioned over airborne millimeter-wave planar antenna of the present invention, metal patch 2 and the vertical interval (being the thickness of medium substrate 1) between the parallel metal floor 5 are chosen as 1/4 o'clock obtainable antenna gain maximum of operation wavelength.
Referring to Fig. 1 and Fig. 2, millimeter-wave planar antenna of the present invention can adopt aperture coupling feed.This feed structure is: metal floor 5 is provided with rectangle coupling through hole 9, and rectangle coupling through hole 9 is parallel with each first bar-shaped trough.The lower surface of the upper surface of medium substrate 7 and metal floor 5 is pasted together, and the lower surface of medium substrate 7 is pasted feeder line 6.Intake is coupled to each first bar-shaped trough by feeder line 6 transmission and by coupling through hole 9.Millimeter-wave planar antenna of the present invention also can adopt the coaxial probe feed, and coaxial probe vertically runs through medium substrate 1 and contacts with metal patch 2.
As shown in Figure 3, millimeter-wave planar antenna of the present invention can only be opened a pair of first bar-shaped trough on metal patch 2, i.e. first bar-shaped trough 31 and first bar-shaped trough 31 ', first bar-shaped trough 31 and first bar-shaped trough 31 ' are that symmetrical center line is left-right symmetric distribution, the center line a of first bar-shaped trough, 31 length directions with straight line kk '
1b
1Center line a with first bar-shaped trough, 31 ' length direction
1' b
1' be parallel to each other.Meanwhile, also have the second a pair of identical bar-shaped trough on the metal patch 2, comprise that second bar-shaped trough 311 and second bar-shaped trough, 311 ', the second bar-shaped trough 311 and second bar-shaped trough 311 ' are with straight line k
1k
1' for being up and down, symmetrical center line is symmetrically distributed the center line a of second bar-shaped trough, 311 length directions
11b
11Center line a with second bar-shaped trough, 311 ' length direction
11' b
11' be parallel to each other.The length of second bar-shaped trough 311 and second bar-shaped trough 311 ' is 1/4~3/4 of operation wavelength.The symmetrical center line k of the symmetrical center line kk ' of first bar-shaped trough 31 and first bar-shaped trough 31 ' and second bar-shaped trough 311 and second bar-shaped trough 311 '
1k
1' vertical.Each first bar-shaped trough, second bar-shaped trough are spaced apart each other so that do not contact mutually.When each first bar-shaped trough and each second bar-shaped trough were energized simultaneously, millimeter-wave planar antenna of the present invention was realized the circular polarization working method.Adopt the circular polarization working method of coaxial probe feeding classification explanation millimeter-wave planar antenna of the present invention in the present embodiment.Coaxial probe and metal patch 2 position contacting are at a H and put the V place.Point H is positioned at the symmetrical center line k between second bar-shaped trough 311 and second bar-shaped trough 311 '
1k
1' on, some V is positioned on the symmetrical center line kk ' between first bar-shaped trough 31 and first bar-shaped trough 31 '.At a H place, coaxial probe vertically runs through medium substrate 1 and contacts with metal patch 2, because each first bar shaped slot length is 1/2 of an operation wavelength, can encourage the central task frequency in first bar-shaped trough 31 and first bar-shaped trough 31 ' is f
oThe field distribution of radiation level polarized wave.At a V place, coaxial probe vertically runs through medium substrate 1 and contacts with metal patch 2, because each second bar shaped slot length is 1/4~3/4 of an operation wavelength, can encourage the central task frequency in second bar-shaped trough 311 and second bar-shaped trough 311 ' is 1/2f
o~3/2f
oThe field distribution of radiation vertically polarized wave.At this moment, the horizontal polarized wave of first bar-shaped trough 31 and the radiation of first bar-shaped trough, 31 ' institute is 90 degree at the vertically polarized wave of the field of far zone field amount and second bar-shaped trough 311 and the radiation of second bar-shaped trough, 311 ' institute at the field of far zone field amount phase difference in certain solid angle scope, can realize circular polarization.
Further, the equal in length of second bar-shaped trough 311 of millimeter-wave planar antenna of the present invention and the length of second bar-shaped trough 311 ' and first bar-shaped trough 31 and first bar-shaped trough 31 ', the center line a of the length direction of first bar-shaped trough 31
1b
1The perhaps center line a of the length direction of first bar-shaped trough 31 '
1' b
1' equal the center line a of the length direction of second bar-shaped trough 311 to the distance of the symmetrical center line kk ' of first bar-shaped trough
11b
11The perhaps center line a of the length direction of second bar-shaped trough 311 '
11' b
11' to the symmetrical center line k of second bar-shaped trough
1k
1' distance.Because each first bar-shaped trough and each second bar-shaped trough are formed left-right symmetric and laterally zygomorphic antenna structure, can realize linear polarization, dual linear polarization and circular polarization when millimeter-wave planar antenna of the present invention adopts different feeding classifications.
As another embodiment of the present invention, as shown in Figure 4, have four identical right angle L type grooves at metal patch 2, comprise right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and right angle L type groove 82 '.Right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and right angle L type groove 82 ' surround a rectangular area ABDC, and the summit, right angle of each right angle L type groove is respectively four summits of rectangular area ABDC.Two the right angle L type grooves 81 at same diagonal two ends that are positioned at rectangular area ABDC are relative with the interior angle of right angle L type groove 81 ', right angle L type groove 82 is relative with the interior angle of right angle L type groove 82 ', wherein, right angle L type groove 81 and right angle L type groove 82 ', right angle L type groove 82 and right angle L type groove 81 ' are left-right symmetric and distribute, and right angle L type groove 81 and right angle L type groove 82, right angle L type groove 82 ' and right angle L type groove 81 ' are symmetrical distribution up and down, right angle L type groove 81, right angle L type groove 82 ', right angle L type groove 82 and right angle L type groove 81 ' are spaced apart each other not to be contacted each other guaranteeing.The length of side on adjacent two limits of rectangular area ABDC is respectively 1/4~3/4 of operation wavelength.One side of rectangular area ABDC is about 1/2 of operation wavelength, guarantees that the central task frequency of antenna is f
o, the another side of rectangular area ABDC is 1/4~3/4 of an operation wavelength simultaneously, makes and can realize circular polarization when antenna adds the feed operate as normal.Earthing rod 4 vertically runs through medium substrate 1, and earthing rod 4 is circumferentially spaced apart on the edge, periphery a distance of the rectangular area ABDC that four right angle L type grooves are surrounded.Each right angle L type groove is positioned at the zone that line surrounded of the geometric center of each orthographic projection of earthing rod 4 on metal patch 2.The two ends of each earthing rod 4 contact with metal patch 2, metal floor 5 respectively.Adopt suitable feeding classification can in the right angle L type groove of the right and left of rectangular area ABDC, excite the field distribution of radiation level polarized wave.In the right angle L type groove on the both sides up and down of rectangular area ABDC, excited the field distribution of radiation vertically polarized wave.At this moment, the horizontal polarized wave of right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and the radiation of right angle L type groove 82 ' institute is 90 degree at the vertically polarized wave of the field of far zone field amount and institute's radiation at the field of far zone field amount phase difference in certain solid angle scope, can realize circular polarization.
Further, the length of side of adjacent two right-angle sides of four right angle L type grooves of this execution mode of the present invention equates, the length of side on adjacent two limits of the rectangular area ABDC that four right angle L type grooves are surrounded equates and is 1/2 of operation wavelength.Because each right angle L type groove is formed left-right symmetric and laterally zygomorphic antenna structure, can realize linear polarization, dual linear polarization and circular polarization when millimeter-wave planar antenna of the present invention adopts different feeding classifications.
As shown in Figure 5, millimeter-wave planar aerial array of the present invention comprises metal patch 2, medium substrate 1, metal floor 5 and earthing rod 4, the thickness of medium substrate 1 is 1/4~1/3 of operation wavelength, metal patch 2 places on the upper surface of medium substrate 1, and the upper surface of the lower surface of medium substrate 1 and metal floor 5 is fixed.Metal patch 2 is parallel with the upper surface of metal floor 5.Earthing rod 4 vertically runs through medium substrate 1, and the two ends of each earthing rod 4 contact with metal patch 2, metal floor 5 respectively.The orthographic projection of each earthing rod 4 on metal patch 2 forms the rectangular area OPQR that is made of m * n square subregion, earthing rod correspondingly is positioned on each boundary line of each square subregion in the orthographic projection on the metal patch 2, in each square subregion, on metal patch 2, be provided with antenna radiation unit
As shown in Figure 6, earthing rod 4 is distributed on each boundary line EF, FG, GH and the HE of square subregion EFGH in the orthographic projection compartment of terrain on the metal patch 2.In square subregion EFGH, antenna radiation unit is made up of first bar-shaped trough 31, first bar-shaped trough 31 ', second bar-shaped trough 311 and second bar-shaped trough 311 '.Second bar-shaped trough 311 and second bar-shaped trough 311 ' and first bar-shaped trough 31, first bar-shaped trough 31 ' are identical, first bar-shaped trough 31 and first bar-shaped trough 31 ' and second bar-shaped trough 311 and second bar-shaped trough 311 ' surround another square area E ' F ' G ' H ', and this square area E ' F ' G ' H ' overlaps with the diagonal of the square subregion EFGH at this antenna radiation unit place.First bar-shaped trough 31 and first bar-shaped trough 31 ' are left-right symmetric, the center line a of first bar-shaped trough, 31 length directions
1b
1Center line a with first bar-shaped trough, 31 ' length direction
1' b
1' be parallel to each other.Second bar-shaped trough 311 and second bar-shaped trough 311 ' are symmetrical distribution up and down, the center line a of second bar-shaped trough, 311 length directions
11b
11Center line a with second bar-shaped trough, 311 ' length direction
11' b
11' be parallel to each other.The length of each first bar-shaped trough and each second bar-shaped trough is 1/2 of operation wavelength.The symmetrical center line k of the symmetrical center line kk ' of two first bar-shaped troughs and two second bar-shaped troughs
1k
1' vertical, the center line a of the length direction of first bar-shaped trough 31
1b
1The perhaps center line a of the length direction of first bar-shaped trough 31 '
1' b
1' equal the center line a of the length direction of second bar-shaped trough 311 to the distance of the symmetrical center line kk ' of first bar-shaped trough
11b
11The perhaps center line a of the length direction of second bar-shaped trough 311 '
11' b
11' to the symmetrical center line k of second bar-shaped trough
1k
1' distance.Each first bar-shaped trough, second bar-shaped trough are spaced apart so that do not contact each other.
As another execution mode of millimeter-wave planar aerial array of the present invention, as shown in Figure 7, earthing rod 4 is distributed on each boundary line IJ, JK, KL and the LI of square subregion IJKL in the orthographic projection compartment of terrain on the metal patch 2.In square subregion IJKL, antenna radiation unit is made up of four identical right angle L type grooves, comprises right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and right angle L type groove 82 ', and the length of side of adjacent two right-angle sides of each right angle L type groove equates.Right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and right angle L type groove 82 ' surround a square area I ' J ' K ' L ', this square area I ' J ' K ' L ' overlaps with the diagonal of the described square subregion IJKL at this antenna radiation unit place, and the summit, right angle of each right angle L type groove is respectively four summits of square area I ' J ' K ' L '.The length of side of square area I ' J ' K ' L ' is 1/2 of an operation wavelength.The right angle L type groove 81 at same diagonal two ends that is positioned at described square area I ' J ' K ' L ' is relative with the interior angle of right angle L type groove 81 ', and right angle L type groove 82 is relative with the interior angle of right angle L type groove 82 '.Right angle L type groove 81, right angle L type groove 81 ', right angle L type groove 82 and right angle L type groove 82 ' are left-right symmetric and are symmetrically distributed up and down, and be spaced apart each other.
When each radiating element is formed aerial array, because electromagnetic lateral transport exists mutual coupling to close, earthing rod 4 has been eliminated between each antenna radiation unit because the mutual coupling that the lateral transport of surface wave causes is closed, and compares with traditional millimeter-wave planar aerial array, antenna pattern is even, and coupling loss reduces.
Each radiating element of millimeter-wave planar aerial array of the present invention has symmetry and symmetrical antenna structure up and down, when adopting different feeding classification millimeter-wave planar aerial arrays of the present invention can realize linear polarization, dual linear polarization and circular polarization.
Claims (9)
1. millimeter-wave planar antenna, it is characterized in that: comprise metal patch, medium substrate, metal floor and earthing rod, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Have a pair of above first identical bar-shaped trough on the described metal patch, every pair first bar-shaped trough is left-right symmetric and distributes, the symmetrical center line of every pair first bar-shaped trough overlaps, and the center line of the length direction of each first bar-shaped trough is parallel to each other, and the length of each first bar-shaped trough is 1/2 of operation wavelength; Described earthing rod vertically runs through medium substrate, and described earthing rod is circumferentially spaced apart on the periphery edge of the first bar-shaped trough region, and the two ends of each earthing rod contact with metal patch, metal floor respectively.
2. millimeter-wave planar antenna according to claim 1 is characterized in that: the thickness of described medium substrate is 1/4~1/3 of operation wavelength.
3. millimeter-wave planar antenna according to claim 1 and 2, it is characterized in that: also have the second a pair of identical bar-shaped trough on the described metal patch, should be in each described earthing rod surrounded zone and should be up and down second bar-shaped trough and be symmetrically distributed to second bar-shaped trough, the center line of the length direction of second bar-shaped trough is parallel to each other, described first bar-shaped trough is a pair of, the symmetrical center line of first bar-shaped trough is vertical with the symmetrical center line of second bar-shaped trough, the length of second bar-shaped trough is 1/4~3/4 of operation wavelength, each first bar-shaped trough, second bar-shaped trough is spaced apart each other.
4. millimeter-wave planar antenna according to claim 3, it is characterized in that: described second bar-shaped trough is identical with first bar-shaped trough, and the center line of the length direction of first bar-shaped trough is equal to the center line of length direction of second bar-shaped trough to the distance of the symmetrical center line of second bar-shaped trough to the distance of the symmetrical center line of first bar-shaped trough.
5. millimeter-wave planar antenna, it is characterized in that: comprise metal patch, medium substrate, metal floor and earthing rod, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Have four identical right angle L type grooves on the described metal patch, these four right angle L type grooves surround a rectangular area, the summit, right angle of each right angle L type groove is respectively four summits of described rectangular area, the interior angle of two described right angle L type grooves at same diagonal two ends that is positioned at described rectangular area is relative, four right angle L type grooves are left-right symmetric and symmetrical distribution up and down, and each right angle L type groove is spaced apart each other; The length of side on adjacent two limits of described rectangular area is 1/4~3/4 of an operation wavelength; Described earthing rod vertically runs through medium substrate, and described earthing rod is circumferentially spaced apart on the periphery edge, rectangular area that four right angle L type grooves are surrounded, and the two ends of each earthing rod contact with metal patch, metal floor respectively.
6. millimeter-wave planar antenna according to claim 5 is characterized in that: the thickness of described medium substrate is 1/4~1/3 of operation wavelength.
7. according to claim 5 or 6 described millimeter-wave planar antennas, it is characterized in that: the length of side of adjacent two right-angle sides of described right angle L type groove equates; The length of side on adjacent two limits of described rectangular area equates and is 1/2 of operation wavelength.
8. millimeter-wave planar aerial array, it is characterized in that: comprise metal patch, medium substrate, metal floor and earthing rod, the thickness of described medium substrate is 1/4~1/3 of operation wavelength, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Described earthing rod vertically runs through medium substrate, and the two ends of each earthing rod contact with metal patch, metal floor respectively; The orthographic projection of described earthing rod on metal patch forms the rectangular area that is made of m * n square subregion, described earthing rod correspondingly is positioned in the orthographic projection on the metal patch on each boundary line of each square subregion, is provided with antenna radiation unit in each square subregion on metal patch; Each described antenna radiation unit is made up of with two second bar-shaped troughs identical with first bar-shaped trough two first bar-shaped troughs, described first bar-shaped trough and second bar-shaped trough surround square area, and this square area overlaps with the diagonal of the described square subregion at this antenna radiation unit place; The center line of the length direction of two first bar-shaped troughs is parallel to each other and two first bar-shaped troughs are left-right symmetric, the center line of the length direction of two second bar-shaped troughs is parallel to each other and two second bar-shaped troughs are symmetry up and down, the length of first bar-shaped trough and second bar-shaped trough is 1/2 of operation wavelength, the symmetrical center line of first bar-shaped trough is vertical with the symmetrical center line of second bar-shaped trough, the distance of the symmetrical center line of the center line of the length direction of first bar-shaped trough and two first bar-shaped troughs equals the distance of the symmetrical center line of the center line of length direction of second bar-shaped trough and two second bar-shaped troughs, each first bar-shaped trough, second bar-shaped trough is spaced apart each other.
9. millimeter-wave planar aerial array, it is characterized in that: comprise metal patch, medium substrate, metal floor and earthing rod, the thickness of described medium substrate is 1/4~1/3 of operation wavelength, described metal patch places on the upper surface of medium substrate, and the lower surface of medium substrate and the upper surface of metal floor are fixed; Described metal patch is parallel with the upper surface of metal floor; Described earthing rod vertically runs through medium substrate, and the two ends of each earthing rod contact with metal patch, metal floor respectively; The orthographic projection of described earthing rod on metal patch forms the rectangular area that is made of m * n square subregion, described earthing rod correspondingly is positioned on each boundary line of each square subregion in the orthographic projection on the metal patch, in each square subregion, on metal patch, be provided with antenna radiation unit, each described antenna radiation unit is made up of four identical right angle L type grooves, described four right angle L type grooves surround a square area, the summit, right angle of each right angle L type groove is respectively four summits of described square area, the interior angle of two described right angle L type grooves at same diagonal two ends that is positioned at described square area is relative, four right angle L type grooves are left-right symmetric and symmetrical distribution up and down, and each right angle L type groove is spaced apart each other; The length of side of described square area is 1/2 of an operation wavelength; This square area overlaps with the diagonal of the described square subregion at this antenna radiation unit place; The length of side of adjacent two right-angle sides of described right angle L type groove equates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102653593A CN101982898A (en) | 2010-08-24 | 2010-08-24 | Millimetre wave planar antenna and array thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102653593A CN101982898A (en) | 2010-08-24 | 2010-08-24 | Millimetre wave planar antenna and array thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101982898A true CN101982898A (en) | 2011-03-02 |
Family
ID=43619792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102653593A Pending CN101982898A (en) | 2010-08-24 | 2010-08-24 | Millimetre wave planar antenna and array thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101982898A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102694251A (en) * | 2012-05-10 | 2012-09-26 | 深圳光启创新技术有限公司 | CMMB antenna and mobile multimedia broadcasting device |
CN102694249A (en) * | 2012-05-10 | 2012-09-26 | 深圳光启创新技术有限公司 | CMMB (China Mobile Multimedia Broadcasting) antenna and mobile multimedia broadcasting device |
WO2012162991A1 (en) * | 2011-05-31 | 2012-12-06 | 深圳光启高等理工研究院 | Antenna and mimo antenna having the dual-polarized antenna |
CN103367877A (en) * | 2012-03-30 | 2013-10-23 | 宏达国际电子股份有限公司 | Mobile device |
CN103515710A (en) * | 2013-08-07 | 2014-01-15 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
CN103956579A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Microstrip antenna with phase shifting function |
CN104064862A (en) * | 2014-07-01 | 2014-09-24 | 石松程 | Antenna based on unipolar microstrip oscillator with isolating rods |
CN104617398A (en) * | 2015-01-30 | 2015-05-13 | 南通大学 | Circularly polarized cavity-backed antenna low in axial ratio |
CN104659481A (en) * | 2015-02-15 | 2015-05-27 | 南通大学 | Linearly polarized cavity-backed antenna with low cross polarization characteristic |
US9306291B2 (en) | 2012-03-30 | 2016-04-05 | Htc Corporation | Mobile device and antenna array therein |
CN109565108A (en) * | 2016-07-29 | 2019-04-02 | 日立金属株式会社 | Planar array antenna and pseudo millimeteric wave/millimeter wave wireless communication components |
CN110890626A (en) * | 2018-09-07 | 2020-03-17 | 光宝电子(广州)有限公司 | Antenna device and printed circuit board |
CN111326864A (en) * | 2020-03-13 | 2020-06-23 | 天津大学 | Coupling differential feed double compression mode patch antenna and solar cell integration |
CN111725606A (en) * | 2019-03-20 | 2020-09-29 | Oppo广东移动通信有限公司 | Antenna packaging module and electronic equipment |
CN112271457A (en) * | 2020-11-03 | 2021-01-26 | 北京邮电大学 | Millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication device |
WO2021233128A1 (en) * | 2020-05-20 | 2021-11-25 | 华为技术有限公司 | Electronic device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003087049A (en) * | 2001-09-07 | 2003-03-20 | Kojima Press Co Ltd | Two-frequency resonance planar patch antenna, and design method therefor |
US20040174314A1 (en) * | 2002-08-30 | 2004-09-09 | Brown Kenneth W. | System and low-loss millimeter-wave cavity-backed antennas with dielectric and air cavities |
CN101038984A (en) * | 2007-05-10 | 2007-09-19 | 北京航空航天大学 | Design for miniaturized GPS microstrip patch antenna |
US20070296634A1 (en) * | 2005-03-09 | 2007-12-27 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Aperture-coupled antenna |
-
2010
- 2010-08-24 CN CN2010102653593A patent/CN101982898A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003087049A (en) * | 2001-09-07 | 2003-03-20 | Kojima Press Co Ltd | Two-frequency resonance planar patch antenna, and design method therefor |
US20040174314A1 (en) * | 2002-08-30 | 2004-09-09 | Brown Kenneth W. | System and low-loss millimeter-wave cavity-backed antennas with dielectric and air cavities |
US20070296634A1 (en) * | 2005-03-09 | 2007-12-27 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Aperture-coupled antenna |
CN101038984A (en) * | 2007-05-10 | 2007-09-19 | 北京航空航天大学 | Design for miniaturized GPS microstrip patch antenna |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012162991A1 (en) * | 2011-05-31 | 2012-12-06 | 深圳光启高等理工研究院 | Antenna and mimo antenna having the dual-polarized antenna |
CN103367877A (en) * | 2012-03-30 | 2013-10-23 | 宏达国际电子股份有限公司 | Mobile device |
US9306291B2 (en) | 2012-03-30 | 2016-04-05 | Htc Corporation | Mobile device and antenna array therein |
CN102694249A (en) * | 2012-05-10 | 2012-09-26 | 深圳光启创新技术有限公司 | CMMB (China Mobile Multimedia Broadcasting) antenna and mobile multimedia broadcasting device |
CN102694251A (en) * | 2012-05-10 | 2012-09-26 | 深圳光启创新技术有限公司 | CMMB antenna and mobile multimedia broadcasting device |
CN103515710B (en) * | 2013-08-07 | 2015-04-08 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
CN103515710A (en) * | 2013-08-07 | 2014-01-15 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
CN103956579A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Microstrip antenna with phase shifting function |
CN104064862A (en) * | 2014-07-01 | 2014-09-24 | 石松程 | Antenna based on unipolar microstrip oscillator with isolating rods |
CN104617398A (en) * | 2015-01-30 | 2015-05-13 | 南通大学 | Circularly polarized cavity-backed antenna low in axial ratio |
CN104617398B (en) * | 2015-01-30 | 2018-10-09 | 中天宽带技术有限公司 | With low axis than circular polarisation cavity-backed radiator antenna |
CN104659481A (en) * | 2015-02-15 | 2015-05-27 | 南通大学 | Linearly polarized cavity-backed antenna with low cross polarization characteristic |
CN104659481B (en) * | 2015-02-15 | 2017-10-13 | 中天宽带技术有限公司 | Linear polarization cavity-backed radiator antenna with low-cross polarization characteristic |
CN109565108A (en) * | 2016-07-29 | 2019-04-02 | 日立金属株式会社 | Planar array antenna and pseudo millimeteric wave/millimeter wave wireless communication components |
CN110890626A (en) * | 2018-09-07 | 2020-03-17 | 光宝电子(广州)有限公司 | Antenna device and printed circuit board |
CN111725606A (en) * | 2019-03-20 | 2020-09-29 | Oppo广东移动通信有限公司 | Antenna packaging module and electronic equipment |
CN111725606B (en) * | 2019-03-20 | 2021-08-31 | Oppo广东移动通信有限公司 | Antenna packaging module and electronic equipment |
CN111326864A (en) * | 2020-03-13 | 2020-06-23 | 天津大学 | Coupling differential feed double compression mode patch antenna and solar cell integration |
CN111326864B (en) * | 2020-03-13 | 2021-06-18 | 天津大学 | Coupling differential feed double compression mode patch antenna and solar cell integration |
WO2021233128A1 (en) * | 2020-05-20 | 2021-11-25 | 华为技术有限公司 | Electronic device |
CN112271457A (en) * | 2020-11-03 | 2021-01-26 | 北京邮电大学 | Millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication device |
CN112271457B (en) * | 2020-11-03 | 2021-06-25 | 北京邮电大学 | Millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101982898A (en) | Millimetre wave planar antenna and array thereof | |
US11069965B2 (en) | Low-profile broadband circularly-polarized array antenna using stacked traveling wave antenna elements | |
JP6073713B2 (en) | Antenna device | |
CN103503231B (en) | Tri-pole antenna element and antenna array | |
EP2908380B1 (en) | Wideband dual-polarized patch antenna array and methods useful in conjunction therewith | |
CN110854527A (en) | Dual-polarized high-performance broadband antenna based on super surface and array thereof | |
KR101954819B1 (en) | A 1d tightly coupled dipole array antenna | |
CN102800956A (en) | Wideband dual-polarized antenna for integrated balun feed | |
CN108028460B (en) | Radiation device | |
US20200358205A1 (en) | Antenna and method of forming the same | |
CN108336484B (en) | Gap-coupled broadband patch antenna | |
CN103811875A (en) | Coax coupled slot antenna | |
CN110797629B (en) | Array solar cell slice antenna based on coplanar waveguide structure | |
CN107196047B (en) | Wide-beam high-gain antenna | |
CN104300209A (en) | Vertical polarization ceiling omni antenna | |
CN110957576A (en) | Ultra-low profile microstrip laminated dual-polarized base station antenna and array | |
CN102394378B (en) | High-gain vertical polarized all-metal sector antenna | |
CN108666751A (en) | A kind of planar wide-angle scanning antenna array | |
CN103682645A (en) | Reconfigurable plane microstrip antenna with multi-angle main beam pointing directions | |
CN110190387A (en) | A kind of single feedback double-circle polarization microstrip antenna | |
CN207116688U (en) | Double frequency high-gain omni-directional antenna | |
CN105742807B (en) | A kind of Vivaldi antenna assemblies applied to imaging system | |
CN105144483B (en) | Circular polarized antenna | |
CN107482307B (en) | A kind of mould superposition micro-strip yagi aerial of high front and back ratio | |
CN106099380A (en) | Waveguide slot frequency scan antenna based on super surface |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110302 |