CN109786944A - A kind of circular polarization microstrip antenna of broadband and wide beamwidth - Google Patents
A kind of circular polarization microstrip antenna of broadband and wide beamwidth Download PDFInfo
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Abstract
The invention proposes a kind of circular polarization microstrip antennas of broadband and wide beamwidth, to solve the relatively narrow technical problem of frequency band and wave beam existing in the prior art.Including the first rectangular dielectric plate and the second rectangular dielectric plate stacked on top of one another, there are two function in one-to-two to divide phase shifter for the upper surface printing of first rectangular dielectric plate, lower surface is printed with metal floor, function divides the output end of phase shifter to weld L-type feed probes in one-to-two, first rectangular dielectric plate is fixedly arranged above circular media plate, the radiation patch for etching star-like gap is printed on the lower surface of circular media plate, and the position at first four angles of rectangular dielectric plate is fixed with the claw type parasitism minor matters being made of orthogonal L-type branch and rectangle branch；Being printed on function under the one-to-two of the lower surface of the second rectangular dielectric plate is divided to two output ends of phase shifter to divide the input terminal of phase shifter to cascade with function in two one-to-two respectively.The present invention has the advantages that broadband and wide beamwidth, in satellite navigation and can should position.
Description
Technical field
The invention belongs to antenna technical fields, are related to a kind of low section broadband and wide beamwidth circular polarization microstrip antenna, are applicable in
Require the scene of circular polarisation, broadband, broad beam characteristic simultaneously in satellite navigation system.
Background technique
Play the part of increasingly important role under the scenes such as satellite navigation system navigation space flight in recent years, auto navigation.By
There is rotation direction orthogonality in circular polarized antenna, the line polarization wave of arbitrary polarisation direction, and the electromagnetic wave of its transmitting can be received
It can be received by the linear polarized antenna of arbitrary polarisation direction, be based on this series of advantages, so becoming the emphasis of navigation antenna research.
Because satellite navigation and positioning needs extensively cover and require antenna in high-gain at low elevation angles, therefore antenna need to have the property of broad beam
Energy.In addition, broadband is also navigation antenna important indicator in order to be compatible with different navigation system simultaneously.On the other hand, because leading
The carriers such as space flight line needs and automobile, aircraft are conformal, also answer low section and miniaturization.To sum up, satellite navigation aerial should be simultaneously
The characteristic for having low section, broadband, broad beam, circular polarisation.
Compared to crossed dipoles and four-arm spiral antenna, microstrip antenna has low section, easy of integration, low cost, quality
The advantages that light, is now widely used for satellite navigation system, but the disadvantage is that frequency band is narrow.Satellite navigation application in, impedance bandwidth and
Half power lobe width is to influence the deciding factor of antenna parameter.
In terms of broadband, enhancing working band width can substantially be divided into following two class, this one is multiband technology
Technology is widely used now.For example, make Antenna Operation in two frequency ranges by the method for increasing grounding probe, it is micro- using being laminated
The technology of band generates two or more resonance points to cover broader impedance bandwidth.Second method can be weighed using frequency
Structure antenna, it can be adjusted by electricity or the method for mechanical adjustment makes Antenna Operation in different impedance bandwidth.However, different frequency range
It is found to exist between signal and influence each other, and the limitation of antenna size is so that multiband aerial is difficult to design.In addition, broadband
Technology is widely adopted, and impedance bandwidth can be increased to 46% by follow-on inverted L shape metal feed probes.More matching section technologies can
Impedance bandwidth is increased to about 24%.However, the axial ratio bandwidth under these methods is usually narrow, i.e. circular polarization characteristics
Difference, therefore the 3dB axis under broadband is also difficult to ensure than beam angle.
On the other hand, in order to increase half power lobe width, the most common method is to increase metal back chamber.In addition, also having
Some other effective ways propose, such as a kind of parasitic ring is stacked in radiation patch and half power lobe width can be opened up
It opens up to 140 degree, 3dB beam angle can be made to reach 108 degree using isolated microstrip antenna technology.But these methods are only
Beam angle can be expanded in narrow-band and section is also high.
It can be seen that under the conditions of broadband, broad beam, circular polarisation etc. are multiple jointly constrain under, real available bandwidth its
It is the intersection of impedance bandwidth, axial ratio bandwidth, directional diagram bandwidth in fact.So circular polarization microstrip antenna combines broad beam and wideband
With particularly difficult.
Authorization Notice No. is CN101286592B, entitled " wide-band circular polarized wide wave beam multimodal satellite navigation terminal day
The Chinese patent of line ", discloses a kind of wide-band circular polarized wide wave beam microstrip antenna, which is divided using one point four of micro-strip function
Phase-shift network generates 4 signals for successively differing 90 degree and constant amplitude, this four feeding points respectively connect the L for being used to expand bandwidth
Type feed probes, probe top set up round metal radiation patch.Its middle probe is with radiation patch nested to be improved in the medium
Microstrip antenna low elevation gain, broadening wave beam, medium outside attaching antenna cover forms a whole, including installation feeding network
The upper wall of metal shielding box improves forward gain as metallic reflection plate.The antenna has good low elevation gain and broadband
Performance, the bandwidth of standing-wave ratio bandwidth (VSWR < 2) are 1.02GHz~1.7GHz, and relative bandwidth is greater than 50%, but bandwidth is still not
Enough width；5 ° of elevation gains of antenna are greater than -5dBi, and beam angle is wide not enough, and the same of forward gain is improved using reflecting plate
When will increase section height.
To sum up, combining broad beam, circular polarisation also and to improve the bandwidth of microstrip antenna, there are also many work to do, therefore
Needing to design in broadband can power distribution be uniform and phase shift steadily accurate feeding network and can broaden frequency band, expand wave beam
Antenna radiator.
Summary of the invention
It is an object of the invention to overcome the problems of the above-mentioned prior art, a kind of circle of broadband and wide beamwidth is proposed
Polarization micro-strip antenna, it is intended to solve the relatively narrow technical problem of frequency band and wave beam existing in the prior art.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of circular polarization microstrip antenna of broadband and wide beamwidth, including the first rectangular dielectric plate 1 and second stacked on top of one another
Rectangular dielectric plate 2；There are two function in one-to-two to divide phase shifter 3, lower surface print for the upper surface printing of first rectangular dielectric plate 1
It is formed with metal floor 4, function is divided to two output ends of phase shifter 3 respectively to weld a L-type feed probes 9 in the one-to-two, described
The top of first rectangular dielectric plate, 1 center is fixed with circular media plate 6 by support column, under the circular media plate 6
Surface is printed with radiation patch 7, is etched with star-like gap 8 thereon, the position at four angles is fixed in first rectangular dielectric plate 1
There are claw type parasitism minor matters 10, which is made of orthogonal L-type branch 101 and rectangle branch 102, rectangle
Branch 102 connect with metal floor 4；The lower surface of second rectangular dielectric plate 2 is printed with function under one-to-two and divides phase shifter 5,
Function is divided to two output ends of phase shifter 5 to divide the input terminal of phase shifter 3 to cascade with function in two one-to-two respectively under the one-to-two.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, function divides phase shifter 3 in described two one-to-two, about
The geometric center of first rectangular dielectric plate 1 is centrosymmetric distribution.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, function divides phase shifter 3 and one-to-two in the one-to-two
Lower function divides phase shifter 5, is all made of composite left-and-right-hand transmission line structure.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, the circular media plate 6, centre normal and first
The centre normal of rectangular dielectric plate 1 is overlapped.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, the L-type feed probes 9, two arm mutually hang down
Directly, and it is vertical with the plate face of the first rectangular dielectric plate 1 with the arm welded of power splitter phase shift 3 in one-to-two, the freedom of another arm
End is connected with the brachyplast section vertical with the arm.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, the star-like gap 8, using about radiation patch 7
Centre normal centrosymmetric structure.
A kind of circular polarization microstrip antenna of above-mentioned broadband and wide beamwidth, the claw type parasitism minor matters 10, rectangle therein point
Branch 102 is vertically fixed on the diagonal line of the first rectangular dielectric plate 1.
Compared with the prior art, the invention has the following advantages:
1, the present invention be printed on function in two one-to-two of the first rectangular dielectric plate upper surface divide phase shifter output in wideband
Interior four constant-amplitude signals for successively differing 90 degree of band, are the prerequisites that circularly polarised wave is realized under broadband；It is welded on two one
Divide function on two to divide the L-type feed probes of phase shifter output end by signal couple feed to radiation patch, is being radiated by etching
Star-like gap on patch increases the current path between port, and the claw type for being fixed on first four Angle Positions of rectangular dielectric plate is posted
Raw minor matters introduce new resonance point in radiation patch under the excitation of electric current, these measures have effectively broadened frequency band, simulation result
Show that impedance relative bandwidth of the present invention be 63.13%, 3dB axis than relative bandwidth is 74.36%.
2, the present invention is due to the rectangle branch in the fixed claw type parasitism minor matters in the position at four angles of the first rectangular dielectric plate
It being connect with metal floor, L-type branch has certain length, and the electric current and radiation patch being distributed thereon power on the raw phase difference of miscarriage,
Enable claw type parasitism minor matters to play the role of director or reflector, effectively expanded wave beam, simulation result shows this hair
It is bright half power lobe width to be extended to substantially in the entire frequency band of 1GHz~2GHz 100 degree or more, and entire upper half-space is
The range gain at 0 degree of the elevation angle or more is all more than -5dBi.
3, of the invention since the free end of arm parallel with the first rectangular dielectric plate in L-type feed probes is connected with and the arm
Vertical brachyplast section, can introduce perception, thus the arm without dividing phase shifter to weld with function in one-to-two goes to adjust matching
It balances the arm bring capacitive parallel with the first rectangular dielectric plate and increases perception and then increase height, it is whole to allow for antenna in this way
Body section height reduces.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is that Fig. 1 cuts whole cross-sectional view of the structure along the direction AA1；
Fig. 3 is that function divides phase shifter structure schematic diagram in two one-to-two of the invention；
Fig. 4 is the structural schematic diagram that function divides phase shifter under one-to-two of the present invention；
Fig. 5 is the structural schematic diagram of L-type metal feed probes of the present invention；
Fig. 6 is the structural schematic diagram of radiation patch of the present invention；
Fig. 7 is the structural schematic diagram of claw type parasitism minor matters of the invention；
Fig. 8 is the S of the embodiment of the present invention11Frequency simulation result diagram；
Fig. 9 is axis ratio-frequency simulation result diagram of the embodiment of the present invention；
Figure 10 (a) is the antenna pattern in face XZ at 1.268GHz of the embodiment of the present invention；
Figure 10 (b) is the antenna pattern in face XZ at 1.575GHz of the embodiment of the present invention；
Figure 10 (c) is the antenna pattern in face XZ at 1.840GHz of the embodiment of the present invention；
Figure 11 is the 3dB axis of the invention implemented than beam angle-frequency simulation result diagram；
Figure 12 is the HPBW- frequency simulation result diagram that the present invention is implemented；
Figure 13 is each port phase-frequency simulation result diagram of feeding network during the present invention is implemented；
Figure 14 is each port power distribution-frequency simulation result diagram of feeding network during the present invention is implemented.
Specific embodiment
In the following with reference to the drawings and specific embodiments, present invention is further described in detail:
Referring to Fig.1, AA1 is the central axes direction of the first rectangular dielectric plate 1 in Fig. 2, Fig. 1.A kind of broadband and wide beamwidth
Circular polarization microstrip antenna, including the first rectangular dielectric plate 1 and the second rectangular dielectric plate 2 stacked on top of one another.
First rectangular dielectric plate 1 and the second rectangular dielectric plate 2 are square, with a thickness of T=1mm, side length L=
70mm uses F4B material, relative dielectric constant 2.65；In first rectangular dielectric plate 1 and the second rectangular dielectric plate 2
On, positioned at function under one-to-two be divided in position i.e. two one-to-two of two output ends of phase shifter 5 function be divided to two of phase shifter 3 it is defeated
Enter on the position at end, reserves the via hole that two radiuses are 0.5mm, two-stage function is cascaded for being inserted into metal column and divides phase shifter；Institute
Stating function in two one-to-two divides function under phase shifter 3 and one-to-two to divide in phase shifter 5 on the position of inductance side rectangular pads, and reserved half
The metallization VIA of diameter 0.25mm is convenient for inductance connection metal floor 4.It is located at four on the first rectangular dielectric plate diagonal line
The slot that length is L3=12mm, width 0.5mm, depth are T=1mm is outputed on the position in corner, is posted to install fixed claw type
Raw 10 reserved space of minor matters.
Function divides phase shifter 3 in the one-to-two, and structure is as shown in figure 3, function divides phase shifter 5 its structure under the one-to-two
As shown in figure 4, being all made of composite left-and-right-hand transmission line structure, the phase-shift characterisitc of left hand transmission line and traditional right-handed transmission line is utilized
Difference, ensure that has stable phase shift in very wide frequency band, so that generating four in broadband successively differs 90 degree and constant amplitude
Signal, lay the foundation to form circularly polarised wave under broadband.And phase shifter is divided to set using composite left-and-right-hand transmission line structure function
Meter reduces the size of feeding network significantly.Function divides phase shifter 3 to be printed on the upper of the first rectangular dielectric plate 1 in described two one-to-two
Surface, the geometric center about the first rectangular dielectric plate 1 are centrosymmetric distribution；Function divides phase shifter 5 to print under the one-to-two
In the lower surface of the second rectangular dielectric plate 2, it can also reduce the size of feeding network using the design of layered multi-stage feed in this way.Often
Function divides function under phase shifter 3 and one-to-two that the power splitter branch line end Wilkinson of phase shifter 5 is divided to bridge in a one-to-two
The isolation resistance of 100 Ω.Function, which divides in phase shifter 3 on the arm for using composite right/left-handed transmission line, in each one-to-two mounts 12pF
With the capacitor of 6pF, 15nH inductance；Function, which divides in phase shifter 5 on the arm for using composite right/left-handed transmission line, under one-to-two mounts 6pF
With the capacitor of 3pF, the inductance of 6.8nH.
The metal floor 4 is printed on the lower surface of the first rectangular dielectric plate 1, and the edge of via hole adds absolutely on metal floor
Edge circle divides the metal column of phase shifter to be connected on floor, to guarantee the stabilization of feed system to prevent from cascading upper and lower function.
The L-type feed probes 9 as shown in figure 5, two arm is mutually perpendicular to, and with power splitter phase shifter 3 in one-to-two
The arm of welding is vertical with the plate face of the first rectangular dielectric plate 1, and the free end of another arm is connected with the brachyplast section vertical with the arm.
The arm vertical with the plate face of the first rectangular dielectric plate 1 is metal column, diameter d=1mm, height 5.7mm；With the first rectangular dielectric plate
The length L5=25mm of the parallel arm of 1 plate face, thickness 0.5mm, the brachyplast section that the free end of this arm is connect highly are
3.7mm, with a thickness of 0.5mm；As shown in Figure 1, four L-type feed probes 9, which are respectively welded at function in two one-to-two, divides phase shifter 3
Four output ends, be parallel to side nearest in the first rectangular dielectric plate 1 and put, if the not parallel side closed on put will need more
Big dielectric-slab, is unfavorable for antenna miniaturization.Function divides four output ends generation of phase shifter 3 successively to differ 90 in two one-to-two
Four constant-amplitude signals and difference and amplitude of degree keep stablizing in broadband, this four signals are coupled by L-type feed probes
Feed radiation patch 7.Common metal feed probes show capacitive, are loaded by L-type and introduce perception, can improve matching, Jin Ertuo
Wide frequency bandwidth.In L-type metal feed probes, the free end of the arm parallel with 1 plate face of first medium plate increases normal thereto
Brachyplast section, can introduce perception, thus be not necessarily to function in one-to-two divide phase shifter welding arm go to balance to adjust matching
The arm bring capacitive parallel with the first rectangular dielectric plate and increase perception and then increase height, thus make antenna entirety section
Height reduces.Therefore L-type metal feed probes improve matching, have broadened frequency band and reduced section height in the present invention.
The circular media plate 6 is as shown in Figure 1, its centre normal is overlapped with the centre normal of the first rectangular dielectric plate 1, material
Material is the FR4_epoxy, media plate thickness 1mm, diameter D=60mm that relative dielectric constant is 4.4, and circular media plate 6 passes through
Three Teflon screws are fixed on the top of 1 center of the first rectangular dielectric plate；The radiation patch 7 as shown in fig. 6, using
Metal material is printed on the lower surface of circular media plate 6, metal patch diameter D=60mm；The gap 8 is as shown in fig. 6, adopt
With about centrosymmetric star-like gap structure, and the center of gap structure is located in the centre normal of radiation patch 7, star-like seam
Gap is intersected to form by 12 rectangular apertures, the length L4=38.7mm of each rectangular aperture, gap width W1=1.2mm.Due to
Star-like gap can greatly increase the current path between port, so as to improve impedance matching, improve the impedance bandwidth of antenna.
The claw type parasitism minor matters 10 orthogonal L-type branch 101 and rectangle branch 102 as shown in fig. 7, be made of, L
101 long side L1=36.2mm of type branch, short side L2=28.7mm, wide 5.7mm, thickness 0.5mm；Rectangle branch 102, long L3=
12mm, high H=12mm, thickness 0.5mm；Rectangle branch 102 is located at as shown in Figure 1, being fixed on the first rectangular dielectric plate diagonal line
In the slot reserved on the position at four angles, and bottom is welded on metal floor 4；It is to examine that claw type parasitism minor matters, which are placed on corner,
Consider miniaturization, makes full use of the space in the first rectangular dielectric plate；The fixation of rectangle branch 102 is in order not to interfere on the diagonal
The wave that radiation patch generates is towards external radiation, because always having if the rectangle branch for being in corner location is not located on diagonal line
The area of radiation patch is faced, the diffusion of electromagnetic wave can be hindered in this way, to be unfavorable for broadening wave beam；Rectangle minor matters 102 are welded
It connects on floor, such claw type parasitism minor matters form monopole antenna, and new resonance point is generated at 1.25GHz；Another angle
Degree sees that the L-type branch 101 for being parallel to the first rectangular dielectric plate introduces capacitive, the first rectangle being vertically welded on metal floor 4
The rectangle branch 102 of dielectric-slab introduces perception, introduces capacitive and perception then increases new resonance point, to improve impedance band
It is wide.In addition, because the horizontal component JiLXing branch 101 of claw type parasitism minor matters has certain length, so that the electric current being distributed thereon
The raw phase difference of miscarriage is powered on radiation patch, and this delay phase difference enables claw type branch to play director or reflector
Effect, to effectively expand beam angle.
This example is fed by coaxial line, and function divides the input port of phase shifter 5 under the inner core and one-to-two of coaxial line
Welding, crust and metal floor 4 weld.
Effect of the invention is described further in combination with simulation result:
1, emulation content
1.1 utilize business simulation software HFSS_15.0 to the S of above-mentioned embodiment11Parameter-frequency carries out simulation calculation,
As a result as shown in Figure 8.
1.2 carry out simulation calculation, knot using axis ratio-frequency of the business simulation software HFSS_15.0 to above-mentioned embodiment
Fruit is as shown in Figure 9.
1.3 carry out emulation meter using far field radiation pattern of the business simulation software HFSS_15.0 to above-mentioned embodiment
It calculates, the results are shown in Figure 10, in which: 10 (a) be embodiment antenna in the XOZ surface radiation directional diagram of 1.268GHz, and 10 (b) are
For embodiment antenna in the XOZ surface radiation directional diagram of 1.575GHz, 10 (c) be embodiment antenna in the face XOZ of 1.840GHz
Antenna pattern；For this example greatest irradiation direction perpendicular to radiation patch 7, taking Z axis forward direction is greatest irradiation direction.
1.4 utilize business simulation software HFSS_15.0 to representativeness frequency points several in the navigation frequency range of above-mentioned embodiment
Locate XOZ plane inner shaft ratio-θ and carry out simulation calculation, and table is made with scatterplot in the beam angle within axis ratio 3dB at each frequency point
The form of figure presents as shown in figure 11.
1.5 utilize business simulation software HFSS_15.0 to representativeness frequency points several in the navigation frequency range of above-mentioned embodiment
Locate main polarization gain-θ in XOZ plane and carry out simulation calculation, and table is made in HPBW (half power lobe width) at each frequency point
It is presented in the form of scatter plot as shown in figure 12.
1.6 utilize business simulation software HFSS_15.0 to each port S parameter phase-of the feeding network of above-mentioned embodiment
Frequency and each port S parameter amplitude versus frequency carry out simulation calculation, as a result as shown in Figure 13,14.
2, simulation result
Referring to Fig. 8, with S11≤ -20dB is standard, in embodiment the impedance bandwidth of antenna be 1.03GHz~
1.98GHz, relative bandwidth 63.13%.
Referring to Fig. 9, the 3dB axial ratio bandwidth of antenna is 0.98GHz~2.14GHz in embodiment, and relative bandwidth is
74.36%.
0, Figure 10 (a) is XOZ surface radiation directional diagram of the embodiment in 1.268GHz referring to Fig.1, and Figure 10 (b) is to implement in fact
For example in the XOZ surface radiation directional diagram of 1.575GHz, Figure 10 (c) is XOZ surface radiation directional diagram of the embodiment in 1.840GHz.It is real
The greatest irradiation direction in example is applied always perpendicular to radiating element surface, maximum gain 4.20dBic；And the increasing at 0 degree of the elevation angle
Benefit is greater than -5dBi, i.e. low elevation gain characteristic is good, and beam angle is wide.
Referring to Fig.1 1, in embodiment antenna in navigation frequency range at main frequency point 3dB axis than beam angle all 100
Degree or more, up to 144 degree.
Referring to Fig.1 2, HPBW, that is, half power lobe width is basic at main frequency point in navigation frequency range for antenna in embodiment
All at 100 degree or more, up to 117 degree.
Referring to Fig.1 3, composite right/left-handed transmission line phase shifter used in embodiment antenna 1.0GHz~2.0GHz this
The phase shift of adjacent port S parameter steadily keeps 90 degree in broadband, i.e. four output signals successively 90 degree of phase shift.
Referring to Fig.1 4, composite right/left-handed transmission line phase shifter used in embodiment antenna 1.0GHz~2.0GHz this
Each each curve of port S parameter is closer to and substantially all in -6dB or so in broadband, illustrates one point of four power distribution more
Uniformly, i.e. output signal constant amplitude.
The above simulation result explanation, the function of the invention based on composite left-and-right-hand transmission line structure divide phase shifter in broadband
Interior phase shift is steady and power distribution is uniform, can provide good feed for realization circular polarisation in broadband.And antenna has reason
The impedance bandwidth and axial ratio bandwidth thought, and there is wider beam angle in broadband.
Above description is only an example of the present invention, does not constitute any limitation of the invention, it is clear that for this field
Professional for, all may be without departing substantially from the principle of the invention, structure the case where after having understood the content of present invention and principle
Under, various modifications and variations in form and details are carried out, but these modifications and variations based on inventive concept are still at this
Within the scope of protection of the claims of invention.
Claims (7)
1. a kind of circular polarization microstrip antenna of broadband and wide beamwidth, it is characterised in that: including the first Rectangular Enclosure with Participating Media stacked on top of one another
Plate (1) and the second rectangular dielectric plate (2)；There are two function point in one-to-two for the upper surface printing of first rectangular dielectric plate (1)
Phase shifter (3), lower surface are printed with metal floor (4), and function is divided to two output ends of phase shifter (3) respectively to weld in the one-to-two
The top of one L-type feed probes (9), the first rectangular dielectric plate (1) center is fixed with round Jie by support column
The lower surface of scutum (6), the circular media plate (6) is printed with radiation patch (7), is etched with thereon star-like gap (8), described
The position at first (1) four angle of rectangular dielectric plate is fixed with claw type parasitism minor matters (10), and the claw type parasitism minor matters (10) are by mutual
Vertical L-type branch (101) and rectangle branch (102) composition, rectangle branch (102) connect with metal floor (4)；Described second
The lower surface of rectangular dielectric plate (2) is printed with function under one-to-two and divides phase shifter (5), and function is divided to the two of phase shifter (5) under the one-to-two
A output end divides the input terminal of phase shifter (3) to cascade with function in two one-to-two respectively.
2. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: described two
Function divides phase shifter (3) in one-to-two, and the geometric center about the first rectangular dielectric plate (1) is centrosymmetric distribution.
3. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: described one point
Function divides function under phase shifter (3) and one-to-two to divide phase shifter (5) on two, is all made of composite left-and-right-hand transmission line structure.
4. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: the circle
Dielectric-slab (6), centre normal are overlapped with the centre normal of the first rectangular dielectric plate (1).
5. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: the L-type
Feed probes (9), two arm are mutually perpendicular to, and the arm and the first Rectangular Enclosure with Participating Media welded with power splitter phase shift (3) in one-to-two
The plate face of plate (1) is vertical, and the free end of another arm is connected with the brachyplast section vertical with the arm.
6. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: described star-like
Gap (8), using about radiation patch (7) centre normal centrosymmetric structure.
7. a kind of circular polarization microstrip antenna of broadband and wide beamwidth according to claim 1, it is characterised in that: the claw type
Parasitic minor matters (10), rectangle branch (102) therein are vertically fixed on the diagonal line of the first rectangular dielectric plate (1).
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| CN110265779A (en) * | 2019-07-23 | 2019-09-20 | 福州大学 | A kind of high low elevation gain satellite navigation terminal antennae of diesis shape broadband |
| CN110364827A (en) * | 2019-08-01 | 2019-10-22 | 武汉虹信通信技术有限责任公司 | Radiate power-devided circuit plate and large scale array antenna |
| CN112421248A (en) * | 2020-11-23 | 2021-02-26 | 西安电子科技大学 | Broadband low-profile circularly polarized microstrip antenna based on multimode resonance |
| CN112968272A (en) * | 2021-02-03 | 2021-06-15 | 重庆邮电大学 | Wide-bandwidth beam low-profile circularly polarized antenna |
| CN113594683A (en) * | 2021-08-10 | 2021-11-02 | 西安电子科技大学 | Quadrifilar helix antenna based on multiple loading structure |
| CN113708073A (en) * | 2021-08-18 | 2021-11-26 | 西安电子科技大学 | Super surface antenna based on square semi-ring feed |
| CN114284699A (en) * | 2021-12-14 | 2022-04-05 | 中国船舶重工集团公司第七二三研究所 | Wide-beam frequency reconfigurable printing four-arm spiral navigation antenna |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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| CN106329035A (en) * | 2016-08-30 | 2017-01-11 | 电子科技大学 | Broadband phase shifter in composite left-right hand structure |
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| CN110364827A (en) * | 2019-08-01 | 2019-10-22 | 武汉虹信通信技术有限责任公司 | Radiate power-devided circuit plate and large scale array antenna |
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| CN112421248A (en) * | 2020-11-23 | 2021-02-26 | 西安电子科技大学 | Broadband low-profile circularly polarized microstrip antenna based on multimode resonance |
| CN112421248B (en) * | 2020-11-23 | 2021-07-23 | 西安电子科技大学 | Broadband low-profile circularly polarized microstrip antenna based on multimode resonance |
| CN112968272A (en) * | 2021-02-03 | 2021-06-15 | 重庆邮电大学 | Wide-bandwidth beam low-profile circularly polarized antenna |
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| CN114284699A (en) * | 2021-12-14 | 2022-04-05 | 中国船舶重工集团公司第七二三研究所 | Wide-beam frequency reconfigurable printing four-arm spiral navigation antenna |
| CN114284699B (en) * | 2021-12-14 | 2024-04-09 | 中国船舶重工集团公司第七二三研究所 | Wide-beam frequency reconfigurable printing four-arm spiral navigation antenna |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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