CN205882164U - Levogyration circular polarized antenna - Google Patents
Levogyration circular polarized antenna Download PDFInfo
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- CN205882164U CN205882164U CN201620724995.0U CN201620724995U CN205882164U CN 205882164 U CN205882164 U CN 205882164U CN 201620724995 U CN201620724995 U CN 201620724995U CN 205882164 U CN205882164 U CN 205882164U
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Abstract
The utility model discloses a levogyration circular polarized antenna, including upper microstrip board, lower floor's microstrip board, upper strata microstrip board is single -layer board, and the lower surface of upper medium has four parasitic patch, and each parasitic patch is the diagonal angle by the square corner cut paster of corner cut to upper strata medium center distributes for central symmetry, and 90 degrees are rotated respectively along the left hand polarization direction in order to each parasitic patch's corner cut, lower floor's microstrip board is the plural boards, and the upper surface of lower floor's medium has feed network and four resonance pasters, and four resonance pasters are the diagonal angle by the square corner cut paster of corner cut to the center of lower floor's medium distributes for central symmetry, and four resonance pasters are located corresponding parasitic patch and under, constitute 4 with each parasitic patch who corresponds and organize the paster units. Feed network adopts the continuous rotating feed mode of serial, according to 0, 90, 180, 270 the feed be four blocks of resonance paster feeds in proper order.
Description
Technical field
This utility model relates to wireless communication technology field, particularly to a kind of left-hand circular polarization antenna.
Background technology
GPS (Global Navigation Satellite System, GNSS) be using satellite as
The satellite-based radio navigation system of guidance station, can for all kinds of carriers of land, sea, air, the whole world, sky provide round-the-clock, 24 hours continuously
High-precision three-dimensional position, speed and chronometer time information, be widely used in every field.GNSS-R technology is GNSS
One novel branch, is one of the study hotspot of domestic and international remote sensing and field of navigation technology.This technology is led at reception satellite
Also the reflected signal after signal is reflected face is received, by accurately estimating and receiving area reflected signal while boat signal
Reason, it is achieved estimation and the inverting to reflecting surface physical characteristic.The research master of target remote sensing and detection is carried out currently with this technology
Sea to be concentrated on is surveyed wind, is surveyed the fields such as height, sea ice detection, soil moisture, mobile target.
Satellite navigation signals essence is a kind of electromagnetic wave, and its polarization characteristic is mainly right-handed circular polarization, navigates the most at present
Satellite signal receiving antenna is mainly right-handed circular polarization antenna.And satellite navigation signals is after the reflective surface such as sea, polarization
Characteristic can change, and right-handed polarized wave is converted to left-handed polarized wave.For GNSS-R technology, receive left-handed polarized wave
Reflected signal is requisite link.The antenna receiving left-handed polarized wave not only needs sufficiently wide bandwidth of operation, due to warp
The signal of the reflection such as sea is the faintest, needs the highest gain.As this link of antenna, the most not yet there is setting of maturation
For providing, have influence on sea and surveyed wind, survey height, sea ice detection, soil moisture, the detection sensitivity of mobile target.
The purpose of utility model is to provide a kind of left-hand circular polarization antenna, has sufficiently wide bandwidth of operation and gain.
Utility model content
First technical scheme of the present utility model is a kind of left-hand circular polarization antenna, it is characterised in that: include upper strata micro-strip
Plate 1, lower floor's micro-strip plate 4, separated by air or cystosepiment between described upper strata micro-strip plate 1 and lower floor's micro-strip plate 4；
Described upper strata micro-strip plate 1 is lamina, and lower surface or upper surface in top dielectric 3 are coated with four pieces of parasitic patch
2, the square corner cut paster that described four pieces of parasitic patch 2 are notched for diagonal angle, four pieces of parasitic patch 2 are with the center of top dielectric 3
Centered by symmetrical, the side of each parasitic patch 2 is aligned with each other, and corner cut rotates 90 the most respectively along left-handed polarization direction
Degree；
Described lower floor micro-strip plate 4 is doubling plate, and the upper surface in layer dielectric 7 is coated with feeding network 6 and four pieces of resonance
Paster 5, lower surface is coated with earth plate 10, and four pieces of resonant patch 5 are symmetrical centered by the center of layer dielectric 7, each humorous
The paster 5 that shakes lays respectively at the lower section of parasitic patch 2 of correspondence and center is identical, the corner cut of each resonant patch 5 and parasitic patch 2
Corner cut co-located, respectively along left-handed polarization direction 90-degree rotation in order；
Described feeding network 6 include first microstrip line the 61, second microstrip line the 62, the 3rd microstrip line the 63, the 4th microstrip line 64,
5th microstrip line the 65, the 6th microstrip line the 66, the 7th microstrip line 67, is connected to 4 the first microstrip lines on each resonant patch 5 side
61 distinguish 90-degree rotation respectively in order along left-handed polarization direction, and two article of second microstrip line the 62, the 3rd microstrip line 63 is respectively with right
First microstrip line 61 of two resonant patch 5 on angle connects, and the second microstrip line 62 is at right angles connected with the first microstrip line 61, and the 3rd
Microstrip line 63 is linearly connected with the first microstrip line 61, and the second adjacent microstrip line the 62, the 3rd microstrip line 63 is by the 4th micro-strip
Line 64 connects, and the 5th microstrip line 65, the 6th microstrip line 66 be height U-shaped the most not etc. in both sides, is positioned at in layer dielectric 7
Revolving the position of turnback centered by the heart, each high-end side line is connected to the outer position, centre of the 4th microstrip line 64, each low side
Side line is positioned at the centre position of two resonant patch 5, interconnects in line, and junction point is at the center of layer dielectric 7, and the 7th is micro-
Band wire 67 is made up of the straight line that three angles are right angle, and the straight line in outside is signal output part, is positioned at the 5th microstrip line the 65, the 6th
On the extended line of microstrip line 66 each low side side line, the middle deflection that the straight line of inner side is connected to the bottom line of the 6th microstrip line 66 is high-end
The position of side line.
Second technical scheme of the present utility model is based on the first technical scheme, it is characterised in that: described parasitic patch 2 whole
Individual overall dimensions is more than resonant patch 5.
3rd technical scheme is based on the first technical scheme, it is characterised in that: width ratio first micro-strip of the second microstrip line 62
Line 61 is narrow, and the 3rd microstrip line 63 is made up of two parts that width is different, and wide part is connected with the first microstrip line 61, width and
The width of two microstrip lines 62 is identical, and the width of the narrow part of the width of the 4th microstrip line 64 and the 3rd microstrip line 63 is identical, and
The width of five microstrip lines 65 and the width of the second microstrip line 62 are identical, and the 6th microstrip line 66 is by the different L-shaped two parts of width
Composition, the portion that the length of narrow part is identical, narrow more than wide part, the width of wide part and the width of the second microstrip line 62
Point width and the narrow part of the 3rd microstrip line 63 identical, wide part is connected with the 4th microstrip line 64, the 7th microstrip line 67
Width and the width of the second microstrip line 62 identical.
4th technical scheme is based on the first technical scheme, it is characterised in that: described upper strata micro-strip plate 1 and lower floor's micro-strip plate 4
Between connect by insulation column 9 is fixing.
5th technical scheme is based on arbitrary technical scheme in first to fourth, it is characterised in that: the upper table of lower floor's micro-strip plate 4
Face is provided with low-noise amplifier, and described low-noise amplifier is positioned at the outside of the outside straight line of the 7th microstrip line 67, with outside
Straight line connects.
6th technical scheme is based on arbitrary technical scheme in first to fourth, it is characterised in that: described levels micro-strip plate
1,4 using Rogers's sheet material 4350, lower floor's micro-strip plate 4 is the double-deck micro-strip plate of thickness 0.762mm, and upper strata micro-strip plate 1 is thickness
The lamina of 1.524mm, described parasitic patch 2, resonant patch 5, feeding network 6 are produced by etch.
Advantage of the present utility model and beneficial effect: the left-hand circular polarization antenna that this utility model provides have gain high,
Standing-wave ratio is low, the broader advantage of bandwidth of operation.
Accompanying drawing explanation
Fig. 1 is the side view of left-hand circular polarization antenna,
Fig. 2 is the oblique view (for convenience of observing, a part for upper strata micro-strip plate is intercepted) of left-hand circular polarization antenna,
Fig. 3 is the structural representation of upper strata micro-strip plate lower surface,
The structural representation of Tu4Shi lower floor micro-strip plate upper surface,
Fig. 5 is the emulation testing figure of left-hand circular polarization antenna effects.
Reference:
1-upper strata micro-strip plate, 2-parasitic patch,
3-top dielectric, 4-lower floor micro-strip plate,
5-resonant patch, 6-feeding network,
7-layer dielectric, 8-low-noise amplifier (LNA),
9-insulate column, 61-the first microstrip line,
62-the second microstrip line, 63-the 3rd microstrip line,
64-the 4th microstrip line, 65-the 5th microstrip line,
66-the 6th microstrip line, 67-the 7th microstrip line.
Detailed description of the invention
This utility model provides many applicable creative concepts, and this creativeness concept can be reflected in a large number of specifically
Context in.Specific embodiment described in following embodiment of the present utility model is only used as tool of the present utility model
The exemplary illustration of body embodiment, and do not constitute the restriction to this utility model scope.
The utility model will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, upper strata micro-strip plate 1, the lower floor's micro-strip plate 4 of including of the present utility model, described upper strata micro-strip plate 1
And separated by air or cystosepiment between lower floor's micro-strip plate 4.
Described upper strata micro-strip plate 1 is lamina, and lower surface or upper surface in top dielectric 3 are coated with four pieces of parasitic patch
2, as it is shown on figure 3, the square corner cut paster that four pieces of parasitic patch 2 are notched for diagonal angle, four pieces of parasitic patch 2 are with top dielectric 3
Center centered by symmetrical, the side of each parasitic patch 2 is aligned with each other, and corner cut is distinguished in order along left-handed polarization direction
90-degree rotation.
As shown in Figure 4, described lower floor micro-strip plate 4 is doubling plate, and the upper surface in layer dielectric 7 is coated with feeding network 6
With four pieces of resonant patch 5, lower surface is coated with earth plate 10, and four pieces of resonant patch 5 are symmetrical centered by the center of layer dielectric 7
Distribution, each resonant patch 5 lays respectively at the lower section of parasitic patch 2 of correspondence and center is identical, the corner cut of each resonant patch 5 with
The corner cut of parasitic patch 2 is co-located, rotates 90 in order along left-handed polarization direction respectively.
As shown in Figure 4, described feeding network 6 include first microstrip line the 61, second microstrip line 62, the 3rd microstrip line 63,
Four microstrip line the 64, the 5th microstrip line the 65, the 6th microstrip line the 66, the 7th microstrip lines 67.It is connected to 4 on each resonant patch 5 side
Bar the first microstrip line 61 distinguishes 90-degree rotation, two article of second microstrip line the 62, the 3rd micro-strip respectively in order along left-handed polarization direction
Line 63 the first microstrip line 61 with two resonant patch 5 on diagonal angle respectively is connected, the second microstrip line 62 and the first microstrip line 61 in
Right angle connects, and the 3rd microstrip line 63 is linearly connected with the first microstrip line 61, the second adjacent microstrip line the 62, the 3rd microstrip line 63
Being connected by the 4th microstrip line 64, the 5th microstrip line 65, the 6th microstrip line 66 be height U-shaped the most not etc. in both sides, be positioned at
Revolving the position of turnback centered by the center of layer dielectric 7, the centre that each high-end side line is connected to the 4th microstrip line 64 is inclined
Outer position, each low side side line is positioned at the centre position of two resonant patch 5, interconnects in line, and junction point is in layer dielectric 7
Center, the 7th microstrip line 67 is made up of the straight line that three articles of angles are right angle, and the straight line in outside is signal output part, is positioned at the 5th
On the extended line of microstrip line the 65, the 6th microstrip line 66 each low side side line, the straight line of inner side is connected to the bottom line of the 6th microstrip line 66
The position of high-end side line it is partial in the middle of.
In present embodiment, utilize the effect of intercoupling between upper and lower two-layer paster 2 and 5, produce two close humorous
Vibration frequency point, thus reach to increase the purpose of microstrip antenna bandwidth, if realize receiving GPS, the Big Dipper two (BD2) simultaneously
With the effect of the different frequency of Galileo, applied widely；
The Square Microstrip Antenna of four pieces of resonant patch 5 compositions obtains the condition of circularly polarised wave:
2Δs/ s=a1/ a=1/2Q
Wherein, Q is the quality factor of dielectric material, but due to antenna energy, actually Q-value is less than theoretical value,
Antenna element resonance length α is approximately equal to the half-wavelength of its operating frequency:
In formula: f is the operating frequency of antenna, εeIt is the effective dielectric constant of dielectric material, the light velocity of c free space；
When selecting medium substrate (layer dielectric 7) thickness, be avoided as much as encouraging higher mode, TM and TE mould surface wave
Cut-off frequency be respectively as follows:
N=0,1,2 ..., (TMn mould)
N=0,1,2 ..., (TEn mould)
fcRepresenting cut-off frequency, h is medium substrate, and c is the light velocity, and n is mode index；
According to above-mentioned formula, select DIELECTRIC CONSTANT εrSuitably dielectric substrate, can either make the size reduction of antenna, again can
Enough ensure the radiation efficiency of antenna；
Unit paster (resonant patch 5, parasitic patch 2) uses double-layer paster structure to also help the single radiating element of reduction
Beam angle, improve microstrip antenna entire gain and also suppress far field secondary lobe, promotion signal reception；
This utility model realizes the circular polarisation of radiating element by the way of double-layer paster is used corner cut and works, feed
Using the coplanar feeding classification of microstrip line to feed resonant patch 5 in design, the advantage that this mode of employing feeds is sky
Line structure is simple, is conducive to the integrated design with LNA；In front feeding classification, use 0 ° simultaneously ,-90 ° ,-180 ° ,-
The rotational order feed of 270 ° is advantageously implemented broadband circle polarized low axle and compares performance；Dimensionally, of the present utility model left-handed
Circular polarized antenna is as accomplished the size of 226mm*266mm*20mm, and owing to area is little, it is the most convenient to use.
Microstrip antenna of the present utility model is double-layer paster antenna, by absolutely between upper strata micro-strip plate 1 and lower floor's micro-strip plate 4
Edge column 9 is fixing to be connected, and utilizes the effect of intercoupling between two-layer paster, produces two close resonant frequency points, reach
Increase the purpose of microstrip antenna bandwidth, thus realize receiving GPS, the Big Dipper No. two (BD2) and the difference of Galileo simultaneously
The effect of frequency, applied widely.
The effect of present embodiment is summarized as follows:
A) radiating element uses feed microstrip line corner cut square patch, utilizes orthogonal modes reactance LC difference to realize unit
Circular polarisation near resonance point；
B) range site paster along polarised direction order rotate, and utilize feeding network order (0 ° ,-90 ° ,-
180 ° ,-270 °), it is achieved the low axle ratio in broadband range；
C) double-layer paster technical scheme is utilized, it is achieved the wideband impedance match of antenna.
Therefore, the left-hand circular polarization antenna that this utility model provides has gain height, standing-wave ratio is low, bandwidth of operation is broader
Advantage.
First embodiment,
The whole overall dimensions of parasitic patch 2 is more than resonant patch 5.
Second embodiment
As shown in Figure 4, width ratio first microstrip line 61 of the second microstrip line 62 is narrow, and the 3rd microstrip line 63 is different by width
Two parts form, and wide part is connected with the first microstrip line 61, and the width of width and the second microstrip line 62 is identical, the 4th microstrip line
The width of the narrow part of the width of 64 and the 3rd microstrip line 63 is identical, the width of the 5th microstrip line 65 and the 2nd microstrip line 62
Width is identical, and the 6th microstrip line 66 is made up of the different L-shaped two parts of width, and the length of narrow part is more than wide part,
The width of wide part and the width of the second microstrip line 62 are identical, the narrow part of the width of narrow part and the 3rd microstrip line 63
Identical, wide part is connected with the 4th microstrip line 64, and the width of the 7th microstrip line 67 and the width of the 2nd microstrip line 62 are identical.
3rd embodiment
The upper surface of lower floor's micro-strip plate 4 is provided with low-noise amplifier, and low-noise amplifier is positioned at the 7th microstrip line 67
The outside of outside straight line, is connected with outside straight line.
4th embodiment
Levels micro-strip plate 1,4 uses Rogers (Rogers) 4350, and lower floor's micro-strip plate 4 is the bilayer of thickness 0.762mm
Micro-strip plate, upper strata micro-strip plate 1 is the lamina of thickness 1.524mm, and parasitic patch 2, resonant patch 5, feeding network 6 are by corrosion
Method is produced.
Owing to levels micro-strip plate 1,4 uses Rogers (Rogers) 4350 to make, further increase resonant patch 5,
The performance of parasitic patch 2, it is thus achieved that higher gain.
Fig. 5 is the emulation testing figure of left-hand circular polarization antenna effects, can by the curve a representing standing-wave ratio and frequency relation
Knowing, left-hand circular polarization antenna of the present utility model standing-wave ratio near GPS and Big Dipper frequency can be reduced to low-down degree.Reason
Opinion low-frequency gain also can get 12.3dB.
It addition, low-noise amplifier (LNA) 8 is arranged at the upper surface of lower floor's micro-strip plate 4, integrated with antenna array set
Meter so that LNA near antenna input port, reduces transmission path loss as far as possible, it is possible to reduce the feeder loss of feeding network.
Resonant patch 5, the concrete size of parasitic patch 2 and the concrete width of each microstrip line, length, low-noise amplifier
(LNA) position of 8 can be determined by emulation, it is possible to utilizes existing computational methods to be calculated, is not repeating at this.
It should be noted that this utility model is illustrated rather than by above-described embodiment, this utility model is limited
Make, and those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.?
In claim, any reference marks that should not will be located between bracket is configured to limitations on claims.Word " includes "
Do not exclude the presence of the element or step not arranged in the claims.Word "a" or "an" before being positioned at element is not excluded for depositing
At multiple such elements.Word first, second and third use do not indicate that any order.Can be by these word solutions
It is interpreted as title.
Claims (6)
1. a left-hand circular polarization antenna, it is characterised in that: include upper strata micro-strip plate (1), lower floor's micro-strip plate (4), described upper strata
Separated by air or cystosepiment between micro-strip plate (1) and described lower floor's micro-strip plate (4)；
Described upper strata micro-strip plate (1) is lamina, and lower surface or upper surface in top dielectric (3) are coated with four pieces of parasitic patch
(2), described four pieces of parasitic patch (2) are the square corner cut paster that diagonal angle is notched, and four pieces of described parasitic patch (2) are with on described
Layer medium (3) center centered by symmetrical, the side of each described parasitic patch (2) is aligned with each other, and corner cut is along left-handed pole
Change direction and distinguish 90-degree rotation in order；
Described lower floor's micro-strip plate (4) is doubling plate, the upper surface in layer dielectric (7) be coated with feeding network (6) and four pieces humorous
Shake paster (5), and lower surface is coated with earth plate (10), and four pieces of described resonant patch (5) with the center of described layer dielectric (7) are
Centrosymmetry is distributed, and each described resonant patch (5) lays respectively at lower section and the center phase of the described parasitic patch (2) of correspondence
With, the corner cut of each described resonant patch (5) is co-located, respectively along left-handed polarization with the corner cut of described parasitic patch (2)
Direction 90-degree rotation in order；
Described feeding network (6) includes the first microstrip line (61), the second microstrip line (62), the 3rd microstrip line (63), the 4th micro-strip
Line (64), the 5th microstrip line (65), the 6th microstrip line (66), the 7th microstrip line (67), be connected to each described resonant patch (5) side
4 described first microstrip lines (61) on limit respectively along left-handed polarization direction in order distinguish 90-degree rotation, two described second
Microstrip line (62), described 3rd microstrip line (63) respectively with described first microstrip line of resonant patch (5) described in two on diagonal angle
(61) connecting, described second microstrip line (62) is at right angles connected with described first microstrip line (61), described 3rd microstrip line (63)
Linearly being connected with described first microstrip line (61), adjacent described second microstrip line (62), described 3rd microstrip line (63) lead to
Crossing described 4th microstrip line (64) to connect, described 5th microstrip line (65), described 6th microstrip line (66) be height in both sides
U-shaped, be positioned at the position revolving turnback centered by the center of described layer dielectric (7), each high-end side line connects respectively
At the outer position, centre of described 4th microstrip line (64), each low side side line is positioned at the centre position of resonant patch described in two (5),
Interconnecting in line, junction point is at the center of described layer dielectric (7), and described 7th microstrip line (67) by three articles of angles is
The straight line at right angle is constituted, and the straight line in outside is signal output part, is positioned at described 5th microstrip line (65), described 6th microstrip line
(66), on the extended line of each low side side line, the straight line of inner side is connected to the middle deflection height of the bottom line of described 6th microstrip line (66)
The position of side line.
Left-hand circular polarization antenna the most according to claim 1, it is characterised in that: the whole profile of described parasitic patch (2)
Size is more than described resonant patch (5).
Left-hand circular polarization antenna the most according to claim 1, it is characterised in that: the width ratio of described second microstrip line (62)
Described first microstrip line (61) is narrow, and described 3rd microstrip line (63) is made up of two parts that width is different, and wide part is with described
First microstrip line (61) connects, and width is identical with the width of described second microstrip line (62), the width of described 4th microstrip line (64)
The width spending narrow part with described 3rd microstrip line (63) is identical, the width and described second of described 5th microstrip line (65)
The width of microstrip line (62) is identical, and described 6th microstrip line (66) is made up of the different L-shaped two parts of width, narrow part
Length is more than wide part, and the width of wide part is identical with the width of described second microstrip line (62), the width of narrow part
Identical with the narrow part of described 3rd microstrip line (63), wide part is connected with described 4th microstrip line (64), and the described 7th
The width of microstrip line (67) is identical with the width of described second microstrip line (62).
Left-hand circular polarization antenna the most according to claim 1, it is characterised in that: described upper strata micro-strip plate (1) with described under
Connect by insulation column (9) is fixing between layer micro-strip plate (4).
Left-hand circular polarization antenna the most according to any one of claim 1 to 4, it is characterised in that: described lower floor micro-strip plate
(4) upper surface is provided with low-noise amplifier, and the outside that described low-noise amplifier is positioned at described 7th microstrip line (67) is straight
The outside of line, is connected with outside straight line.
Left-hand circular polarization antenna the most according to any one of claim 1 to 4, it is characterised in that: described levels micro-strip
Plate (1,4) uses Rogers 4350, and described lower floor's micro-strip plate (4) is the double-deck micro-strip plate of thickness 0.762mm, described upper strata micro-strip
Plate (1) is the lamina of thickness 1.524mm, and described parasitic patch (2), described resonant patch (5), described feeding network (6) are logical
Excessive erosion method is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620724995.0U CN205882164U (en) | 2016-07-11 | 2016-07-11 | Levogyration circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620724995.0U CN205882164U (en) | 2016-07-11 | 2016-07-11 | Levogyration circular polarized antenna |
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| CN205882164U true CN205882164U (en) | 2017-01-11 |
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| CN201620724995.0U Active CN205882164U (en) | 2016-07-11 | 2016-07-11 | Levogyration circular polarized antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025533A (en) * | 2016-07-11 | 2016-10-12 | 北京航大泰科信息技术有限公司 | Left-handed circularly polarized antenna |
| CN107394367A (en) * | 2017-07-31 | 2017-11-24 | 广东曼克维通信科技有限公司 | Millimeter wave half module substrate integrated wave guide circular polarized antenna unit and array antenna |
| CN110085991A (en) * | 2019-05-13 | 2019-08-02 | 南通大学 | A kind of circular polarisation low section dielectric patch antenna element and its array |
-
2016
- 2016-07-11 CN CN201620724995.0U patent/CN205882164U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025533A (en) * | 2016-07-11 | 2016-10-12 | 北京航大泰科信息技术有限公司 | Left-handed circularly polarized antenna |
| CN107394367A (en) * | 2017-07-31 | 2017-11-24 | 广东曼克维通信科技有限公司 | Millimeter wave half module substrate integrated wave guide circular polarized antenna unit and array antenna |
| CN110085991A (en) * | 2019-05-13 | 2019-08-02 | 南通大学 | A kind of circular polarisation low section dielectric patch antenna element and its array |
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