CN108987921B - Improve the aerial array of trielectrode gradient unit cross polarization discrimination - Google Patents
Improve the aerial array of trielectrode gradient unit cross polarization discrimination Download PDFInfo
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- CN108987921B CN108987921B CN201810893203.6A CN201810893203A CN108987921B CN 108987921 B CN108987921 B CN 108987921B CN 201810893203 A CN201810893203 A CN 201810893203A CN 108987921 B CN108987921 B CN 108987921B
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- wave dipole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a kind of aerial array for improving trielectrode gradient unit cross polarization discrimination, including 4 identical trielectrode gradient unit units, feeding network and reflecting plate, 4 trielectrode gradient unit units are rotated relative to center dot sequency, are mounted on reflecting plate.The present invention places trielectrode gradient unit unit using rotation and is equipped with suitable phase to the corresponding port of each unit；Compared with prior art, cross polarization discrimination of the invention increases；While the present invention is without space waste, the problem that cross polarization discrimination is low in trielectrode gradient unit large-scale commercial use is overcome.
Description
This application claims in submission on June 25th, 2018 Patent Office of the People's Republic of China, application No. is 201810662823.9 application names
The referred to as priority of the Chinese patent application of " aerial array for improving trielectrode gradient unit cross polarization discrimination ", entire contents
It is hereby incorporated by reference in the application.
Technical field
The invention belongs to mobile communication technology fields, are related to a kind of antenna for improving trielectrode gradient unit cross polarization discrimination
Array.
Background technique
Existing antenna for base station generallys use ± 45 ° of dual polarizations to fight multipath effect.Application No. is 201220661202.7,
Entitled " ultra-wideband Bipolarization antenna for base station radiating element ", publication date are on June 19th, 2013, propose dual polarization base
Station antenna directly generates dual polarization using two crossed dipoles.Application No. is 201310628350.8, entitled " antenna
And array antenna ", publication date is on March 5th, 2014, it was also proposed that directly generates dual-polarized base using two crossed dipoles
Station antenna.Application No. is 201280021424.5, entitled " trielectrode gradient unit element and aerial array ", publication date is
In order to create ± 45 ° of dual polarized antennas of more compact structure, and reduce the cost of antenna for base station on January 8th, 2014, this is specially
Each of benefit proposes trielectrode gradient unit element and aerial array, which is related to three pole subcomponents have the first side arm and
Two side arms, three pole subcomponents further include the center arm approximately perpendicular to first and second side arm；Three pole subcomponents are oriented such that
Side arm or center arm are parallel to the longitudinal axis of reflector；The trielectrode gradient unit element can be seen as by two dipole folded back
Backrest, which is placed, to be constituted, and the arm of the dipole of each fold generates two orthogonal electric currents, therefore synthesizes an inclined polarization, together
The arm of sample, another dipole folded also generates two orthogonal electric currents, synthesizes another inclined polarization.It is special for this
Benefit, described in the 15th row of page 8 " cross polarization is than the degree of discrimination for greater than 12dB in +/- 60 ° of section " is three extremely sub to this
After element carries out group battle array, cross polarization is still more undesirable than the degree of discrimination.Cross polarization is than the degree of discrimination (cross polarization
Discrimination, XPD) it is to characterize the energy of radiation or received polarization purity between antenna maintenance level and vertical polarization signal
Power, XPD are the bigger the better.Therefore, how it to be based on above-mentioned three pole subcomponent, promotes the cross polarization of its subarray than the property such as degree of discrimination
Can, be conducive to the large-scale application of the antenna.
Summary of the invention
To achieve the above object, the present invention provides a kind of aerial array for improving trielectrode gradient unit cross polarization discrimination,
Solve the problems, such as that cross polarization is relatively high when trielectrode gradient unit unit group battle array in the prior art.
The technical scheme adopted by the invention is that improving the aerial array of trielectrode gradient unit cross polarization discrimination, including 4
A identical trielectrode gradient unit unit, feeding network and reflecting plate, 4 trielectrode gradient unit units are rotated relative to center dot sequency
It is mounted on reflecting plate, the front of reflecting plate is printed with feeding network.
Further, 4 trielectrode gradient unit units include first medium plate, second medium plate and third medium
Plate, third dielectric-slab is vertical with first medium plate, second medium plate respectively, first medium plate, second medium plate and third medium
The lower end of plate is provided with rectangular slot for being mounted on reflecting plate, first medium plate, second medium plate and third dielectric-slab
Between connected also by slot.
Further, the first medium plate has a tie point, is denoted as " 1a ", " 2b ", " 1c ", " 2d " respectively, the
One dielectric-slab upper surface is printed with a part of the first feeder line, and lower surface is printed with an arm of the first half-wave dipole；
The second medium plate has a tie point, is denoted as " 2a ", " 1b ", " 2c ", " 1d " respectively, on second medium plate
Surface is printed with a part of the second feeder line, and lower surface is printed with an arm of the second half-wave dipole；
The upper surface of the third dielectric-slab on the right side is printed with another part of the first feeder line, and lower surface is printed with first
Another arm of half-wave dipole；Third dielectric-slab is printed with another part of the second feeder line, lower surface print by the upper surface in left side
It is formed with another arm of the second half-wave dipole；
Another part of a part of first feeder line and the first feeder line, which is welded to connect, constitutes the first feeder line；
Another part of a part of second feeder line and the second feeder line, which is welded to connect, constitutes the second feeder line；
One arm of the first half-wave dipole and another arm of the first half-wave dipole constitute the first half-wave dipole；
One arm of the second half-wave dipole and another arm of the second half-wave dipole constitute the second half-wave dipole.
Further, a part of first feeder line is connect with the tie point of first medium plate；One of second feeder line
Divide and is connect with the tie point of second medium plate.
Further, an arm of first half-wave dipole, another arm of the first half-wave dipole, the second half-wave dipole
An arm and the second half-wave dipole another arm brachium it is equal, be central task frequency point pair in 0.25 times of free space
The wavelength answered.
Further, the feeding network include the first feeding network and the second feeding network, the first feeding network it is defeated
Entering end is first port, and output end is respectively labeled as " 1a ', 1b ', 1c ', 1d ' ", output end 1a ', 1b ', 1c ', the electric current of 1d '
Amplitude is equal, and phase is respectively 180 °, and 0 °, 0 °, 180 °, four output ends tie point with 4 trielectrode gradient unit units respectively
" 1a, 1b, 1c, 1d " welding；
The input terminal of second feeding network is second port, and output end is respectively labeled as " 2a ', 2b ', 2c ', 2d ' ", output
Hold 2a ', 2b ', 2c ', the current amplitude of 2d ' is equal, and phase is respectively 0 °, 0 °, 180 °, 180 °, four output ends respectively with 4
Tie point " 2a, 2b, 2c, 2d " welding of trielectrode gradient unit unit.
Further, the reflection back is to cover the FR-4 square dielectric-slab of copper.
Further, the first medium plate, second medium plate and third dielectric-slab with a thickness of 0.5mm-1.6mm；
Using Rogers4350B plate or FR-4 plate.
Further, the aerial array for improving trielectrode gradient unit cross polarization discrimination is applied as subarray in battle array
In column, subarray can arbitrarily arrange.
The invention has the advantages that the present invention places trielectrode gradient unit unit and corresponding to each unit using rotation
Port is equipped with suitable phase；Compared with prior art, cross polarization discrimination of the invention increases；The present invention is without space
While waste, the problem that cross polarization discrimination is low in trielectrode gradient unit large-scale commercial use is overcome.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is overall structure top view of the invention；
Fig. 2 is the top view of inventive antenna array；
Fig. 3 is the top view of feeding network of the present invention；
Fig. 4 is the structural schematic diagram of trielectrode gradient unit unit of the present invention；
Fig. 5 is the structural schematic diagram of trielectrode gradient unit unit first medium plate of the present invention；
Fig. 6 is the structural schematic diagram of trielectrode gradient unit unit second medium plate of the present invention；
Fig. 7 is the structural schematic diagram of trielectrode gradient unit unit third dielectric-slab of the present invention；
Fig. 8 is emulation directional diagram of the embodiment 1 in the face different frequent points H；
Fig. 9 is emulation directional diagram of the embodiment 2 in the face different frequent points H；
Figure 10 is vector current distribution map of the embodiment 1 in 3.45GHz；
Figure 11 is vector current distribution map of the embodiment 2 in 3.45GHz.
In figure, 1. trielectrode gradient unit units, 11. first medium plates, 12. second medium plates, 13. third dielectric-slabs, 111.
A part of first feeder line, an arm of 112. first half-wave dipoles, a part of 121. second feeder lines, the vibration of 122. second half-waves
Son an arm, another part of 131. first feeder lines, another arm of 132. first half-wave dipoles, 133. second feeder lines it is another
A part, another arm of 134. second half-wave dipoles, 2. feeding networks, 21. first feeding networks, 22. second feeding networks,
23. first port, 24. second ports, 3. reflecting plates.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The aerial array of raising trielectrode gradient unit cross polarization discrimination, including 4 identical trielectrode gradient unit units 1,
Feeding network 2 and reflecting plate 3, as shown in Figure 1,4 trielectrode gradient unit units 1 are rotatably mounted on reflection relative to center dot sequency
On plate 3；
4 trielectrode gradient unit units 1 are including first medium plate 11, second medium plate 12 and third dielectric-slab 13, such as
Shown in Fig. 5-7, third dielectric-slab 13 is vertical with first medium plate 11, second medium plate 12 respectively；First medium plate 11, second is situated between
The lower end of scutum 12 and third dielectric-slab 13 is provided with rectangular slot and is easily installed on reflecting plate 3, first medium plate 11,
It is connected between second medium plate 12 and third dielectric-slab 13 also by slot, as shown in Figure 4；
Trielectrode gradient unit unit 1 is for generating ± 45 ° of dual polarization waves, the first medium plate 11 of 4 trielectrode gradient unit units 1
There is a tie point, be denoted as " 1a ", " 2b ", " 1c ", " 2d " respectively, second medium plate 12 has a tie point, remembers respectively
For " 2a ", " 1b ", " 2c ", " 1d ", the distance between first medium plate 11 and second medium plate 12 are set as 1-3mm, such as Fig. 2 institute
Show；
11 upper surface of first medium plate is printed with a part 111 of the first feeder line, and lower surface is printed with the first half-wave dipole
An arm 112, as shown in Figure 5；
12 upper surface of second medium plate is printed with a part 121 of the second feeder line, and lower surface is printed with the second half-wave dipole
An arm 122, as shown in Figure 6；
The upper surface of third dielectric-slab 13 on the right side is printed with another part 131 of the first feeder line, and lower surface is printed with
Another arm 132 of one half-wave dipole；Third dielectric-slab 13 is printed with another part of the second feeder line by the upper surface in left side
133, lower surface is printed with another arm 134 of the second half-wave dipole；As shown in Figure 7；
A part 111 of first feeder line and another part 131 of the first feeder line, which are welded to connect, constitutes the first feeder line to reality
Now it is electrically connected；A part 121 of second feeder line and another part 133 of the second feeder line, which are welded to connect, constitutes the second feeder line to reality
Now it is electrically connected；
First feeder line and the second feeder line are considered as the sub- balun of conventional dipole from 90 degree of formation of intermediate bending, the first feeder line
A part 111 and the first feeder line another part 131, a part 121 of the second feeder line and another part 133 of the second feeder line
Length, width can suitably adjust, effect be reduce antenna return loss, improve antenna match degree.
One arm 112 of the first half-wave dipole, another arm 132 of the first half-wave dipole, one of the second half-wave dipole
The brachium of another arm 134 of arm 122 and the second half-wave dipole is equal, and the free space central task frequency point for being 0.25 times is corresponding
Wavelength, in the present embodiment 1 and 2, working frequency range 3.3-3.6GHz, center frequency point 3.45GHz are computed, center frequency point
Corresponding wavelength is 87cm, an arm 112 of the first half-wave dipole and another arm of the first half-wave dipole when for 3.45GHz
132 brachium is 0.25 × 87cm=21.7cm, their physical length can change as needed.
Feeding network 2 includes the first feeding network 21 and the second feeding network 22, and the first feeding network 21 is one one point
Four power splitter, input terminal are first ports 23, and output end is respectively labeled as " 1a ', 1b ', 1c ', 1d ' ", output end 1a ',
1b ', 1c ', the current amplitude of 1d ' is equal, and phase is respectively 180 °, and 0 °, 0 °, 180 °, four output ends are extremely sub with 4 three respectively
" 1a, 1b, 1c, 1d " are welded the tie point of antenna element 1, as shown in Figure 3；When first port 23 is motivated, second port 24 is connect
When matched load, the energy coupling of the first feeding network 21 transmission is to the corresponding trielectrode gradient unit unit of tie point 1a and 1c
On one arm 112 of 1 the first half-wave dipole and another arm 132 of the first half-wave dipole, so that the one of the first half-wave dipole
A arm 112 forms the electric current along +Y direction, another arm 132 of the first half-wave dipole forms the electric current along +X direction, in this way edge+
The electric current of Y-direction and the electric current that+45 ° of directions in edge can be synthesized along the electric current of +X direction.Meanwhile first feeding network 21 transmit
Energy coupling to the corresponding trielectrode gradient unit unit 1 of tie point 1b and 1d the second half-wave dipole 122 He of arm
On another arm 134 of second half-wave dipole, so that an arm 122 of the second half-wave dipole forms the electric current along +X direction, the
The electric current along +Y direction is formed on another arm 134 of two half-wave dipoles, also synthesizes the electric current along+45 degree.
Second feeding network 22 is also one one point four of power splitter, and input terminal is second port 24, output end difference
Labeled as " 2a ', 2b ', 2c ', 2d ' ", output end 2a ', 2b ', 2c ', the current amplitude of 2d ' is equal, and phase is respectively 0 °, and 0 °,
180 °, 180 °, " 2a, 2b, 2c, 2d " are welded four output ends with the tie point of 4 trielectrode gradient unit units 1 respectively；When second
Port 24 is motivated, when first port 23 connects matched load, the second feeding network 22 transmission energy coupling to tie point 2a with
One arm 122 of the second half-wave dipole of the corresponding trielectrode gradient unit unit 1 of 2c and another arm of the second half-wave dipole
On 134, so that an arm 122 of the second half-wave dipole forms the electric current along -Y direction, another arm 134 of the second half-wave dipole
Electric current in X direction is formed, the electric current along the electric current of -Y direction and in X direction in this way can synthesize the electricity along -45 ° of directions
Stream.Meanwhile second the energy coupling transmitted of feeding network 22 to the corresponding trielectrode gradient unit unit 1 of tie point 2b and 2d
On one arm 112 of the first half-wave dipole and another arm 132 of the first half-wave dipole, so that an arm of the first half-wave dipole
112 form electric current in X direction, another arm 132 of the first half-wave dipole forms the electric current along -Y direction, so in X direction
Electric current and also synthesize the electric current along -45 ° of directions along the electric current of -Y direction.
Reflecting plate 3 is used to reduce the backward radiation of trielectrode gradient unit unit 1, obtains the forward radiation of high-gain, makees simultaneously
For the carrier of feeding network 2, suitable phase is provided to trielectrode gradient unit unit 1；3 back side of reflecting plate be cover copper FR-4 it is rectangular
Dielectric-slab, and the front of reflecting plate 3 is printed with feeding network 2；
First medium plate 11, second medium plate 12 and third dielectric-slab 13 with a thickness of 0.5mm-1.6mm；First medium
The material of plate 11, second medium plate 12 and third dielectric-slab 13 uses Rogers4350B plate or FR-4 plate.
Reflecting plate 3 with a thickness of 0.5mm-1.6mm, thickness selects according to actual needs.
The length of 2 microstrip line of feeding network, width, position can be all adjusted according to actual needs.First feeding network
21, as long as guaranteeing that the amplitude of its output end is equal, phase is respectively 180 °, 0 °, 0 °, 180 °；Second feeding network 22, only
Guarantee that the amplitude of its output end is equal, phase is respectively 0 °, 0 °, 180 °, 180 °；
The array arrangement for improving the aerial array of trielectrode gradient unit cross polarization discrimination is 4 trielectrode gradient unit units 1
It is rotated relative to center dot sequency, the feeding classification for improving trielectrode gradient unit cross polarization discrimination is four trielectrode gradient unit lists
The corresponding port of+45 degree polarization directions of member 1 is equal using amplitude, and phase difference is respectively 180 °, and 0 °, 0 °, the first of 180 ° is presented
Electric network 21 is fed, and the corresponding port of -45 degree polarization directions of four trielectrode gradient unit units 1 is equal using amplitude, phase difference
Respectively 0 °, 0 °, 180 °, 180 ° of the second feeding network 22 feed, it may also be said to, improve trielectrode gradient unit cross polarization and identify
The feeding classification of degree is by port 1a, and 1b, 1c, 1d is equal with amplitude, and phase difference is respectively 180 °, and 0 °, 0 °, the first of 180 ° is presented
Electric network 21 connects, and by port 2a, 2b, 2c, 2d is equal with amplitude, and phase difference is respectively 0 °, and 0 °, 180 °, the second of 180 °
Feeding network 22 connects.
Embodiment 1
Fig. 8 is to be placed using rotation and assign the subarray of port appropriate phase in the face side H of 3.3,3.45 and 3.6GHz
Xiang Tu, direction figure include that curve is compared in main polarization and cross polarization.
As shown in Figure 10, the amplitudes such as tie point 1a, 1b, 1c, 1d are motivated, and current feed phase is respectively 180 °, and 0 °, 0 °,
Vector current distribution map at 180 °.Scale on the left of Figure 10 represents current density distribution, and color is more shallow, represents current amplitude and gets over
Greatly, conversely, color is deeper, it is smaller to represent current amplitude, it can be seen from fig. 10 that working as 1a, 1b, 1c, the amplitudes such as 1d are motivated,
And current feed phase is when being respectively 180 °, 0 °, 0 °, 180 °, energy coupling to the corresponding trielectrode gradient unit of tie point 1a and 1c
On one arm 112 of the first half-wave dipole of unit 1 and another arm 132 of the first half-wave dipole, so that the first half-wave dipole
An arm 112 form the electric current along +Y direction, another arm 132 of the first half-wave dipole forms the electric current along +X direction, this
Electric current of the sample along +Y direction and the electric current along +X direction can synthesize the electric current along+45 ° of directions.Meanwhile energy coupling to connect
One arm 122 of the second half-wave dipole of the corresponding trielectrode gradient unit unit 1 of contact 1b and 1d and the second half-wave dipole
On another arm 134 so that the second half-wave dipole an arm 122 formed along +X direction electric current, the second half-wave dipole it is another
The electric current along +Y direction is formed on one arm 134, also synthesizes the electric current along+45 degree.And in 2a, 2b, 2c and 2d tie point pair
On the arm for the half-wave dipole answered, there is weaker induced current, compound direction is spent along -45, introduces partial intersection polarization.
Embodiment 2
Fig. 9 is not take the subarray of array arrangement and feeding classification of the invention in the face H of 3.3,3.45 and 3.6GHz
Directional diagram, direction figure include that curve is compared in main polarization and cross polarization.
Figure 11 is (tie point 1a, 1b, 1c, 1d etc. when trielectrode gradient unit unit 1 of the present invention organizes battle array in the usual way
Amplitude in phase is motivated) in the vector current distribution map of 3.45GHz.Scale on the left of Figure 11 represents current density distribution, face
Color is more shallow, and it is bigger to represent current amplitude, conversely, color is deeper, it is smaller to represent current amplitude.It can be seen from fig. 11 that connection
When the amplitude in phase such as point 1a, 1b, 1c, 1d are motivated, the energy coupling of transmission a to arm 112 of the first half-wave dipole and
On another arm 132 of one half-wave dipole, so that electric current of an arm 112 formation of the first half-wave dipole along +Y direction, first
Another arm 132 of half-wave dipole forms the electric current along +X direction；In this way along the electric current of +Y direction and can along the electric current of +X direction
To synthesize the electric current along+45 ° of directions.Unlike the first embodiment, the corresponding half-wave dipole of non-actuated tie point 2b, 2c
On two arms of the induced current amplitude much larger than the corresponding half-wave dipole of tie point 2b, 2c in embodiment 1 on two arms
Induced current amplitude, their compound direction is along -45 °, with+45 ° of leading polarization directions on the contrary, therefore their poles in far field
Change purity decline, the cross polarization thus introduced is bigger than the cross polarization of embodiment 1, that is to say, that the cross polarization of embodiment 2
The degree of discrimination is lower than the cross polarization discrimination of embodiment 1.
From embodiment 1 and embodiment 2 as can be seen that the main polarization curve approximation of the two aerial arrays, the cross-pole of Fig. 8
Changing ratio maximum value in ± 60 ° is -24.3dB, and the cross polarization ratio of Fig. 9 maximum value in ± 60 ° is -13.7dB.Namely
It says, trielectrode gradient unit unit 1 is placed using rotation and configures the side of suitable phase to the port of each trielectrode gradient unit unit 1
After method, the maximum value of cross polarization discrimination improves 10.6dB.4 trielectrode gradient unit units 1 are revolved relative to center dot sequency
Turn, and the corresponding port of+45 degree polarization directions of 4 trielectrode gradient unit units 1 is equal using amplitude, phase difference is respectively
180 °, 0 °, 0 °, -45 degree polarization directions of 180 ° of the first feeding network 21 feed, four trielectrode gradient unit units 1 are corresponding
Port is equal using amplitude, and phase difference is respectively 0 °, and 0 °, 180 °, three poles can be improved in 180 ° of the second feeding network 22 feed
Sub-antenna subarray cross polarization discrimination.
The aerial array of Fig. 1 composition of this paper is alternatively arranged as subarray application in an array, and subarray can arbitrarily arrange.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. improving the aerial array of trielectrode gradient unit cross polarization discrimination, which is characterized in that including 4 identical three extremely sub- days
Line unit (1), feeding network (2) and reflecting plate (3), 4 trielectrode gradient unit units (1) rotate relative to center dot sequency installs
On reflecting plate (3), the front of reflecting plate (3) is printed with feeding network (2)；
The feeding network (2) includes the first feeding network (21) and the second feeding network (22), the first feeding network (21)
Input terminal is first port (23), and output end is respectively labeled as " 1a ', 1b ', 1c ', 1d ' ", output end 1a ', 1b ',
1c ', 1d ' current amplitude it is equal, phase is respectively 180 °, 0 °, 0 °, 180 °, four output ends respectively with 4 three extremely sub- days
Tie point " 1a, 1b, 1c, 1d " welding of line unit (1)；
The input terminal of second feeding network (22) is second port (24), output end be respectively labeled as " 2a ', 2b ',
2c ', 2d ' ", output end 2a ', 2b ', 2c ', the current amplitude of 2d ' is equal, and phase is respectively 0 °, and 0 °, 180 °, 180 °, four
" 2a, 2b, 2c, 2d " are welded a output end with the tie point of 4 trielectrode gradient unit units (1) respectively.
2. the aerial array according to claim 1 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
Stating 4 trielectrode gradient unit units (1) includes first medium plate (11), second medium plate (12) and third dielectric-slab (13),
Third dielectric-slab (13) is vertical with first medium plate (11), second medium plate (12) respectively, first medium plate (11), second medium
The lower end of plate (12) and third dielectric-slab (13) is provided with rectangular slot for being mounted on reflecting plate (3), first medium plate
(11), it is connect between second medium plate (12) and third dielectric-slab (13) also by slot.
3. the aerial array according to claim 2 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
Stating first medium plate (11) has a tie point, is denoted as " 1a ", " 2b ", " 1c ", " 2d ", table on first medium plate (11) respectively
Face is printed with a part (111) of the first feeder line, and lower surface is printed with an arm (112) of the first half-wave dipole；
The second medium plate (12) has a tie point, is denoted as " 2a ", " 1b ", " 2c ", " 1d ", second medium plate respectively
(12) upper surface is printed with a part (121) of the second feeder line, and lower surface is printed with an arm (122) of the second half-wave dipole；
The upper surface of the third dielectric-slab (13) on the right side is printed with another part (131) of the first feeder line, lower surface printing
There is another arm (132) of the first half-wave dipole；Third dielectric-slab (13) is printed with the another of the second feeder line by the upper surface in left side
A part of (133), lower surface is printed with another arm (134) of the second half-wave dipole；
A part (111) of first feeder line and another part (131) of the first feeder line are welded to connect and constitute the first feeder line；
A part (121) of second feeder line and another part (133) of the second feeder line are welded to connect and constitute the second feeder line；
One arm (112) of the first half-wave dipole and another arm (132) of the first half-wave dipole constitute the first half-wave dipole；
One arm (122) of the second half-wave dipole and another arm (134) of the second half-wave dipole constitute the second half-wave dipole.
4. the aerial array according to claim 3 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
The a part (111) for stating the first feeder line is connect with the tie point of first medium plate (11)；A part (121) of second feeder line and the
The tie point of second medium plate (12) connects.
5. the aerial array according to claim 3 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
State an arm (112) of the first half-wave dipole, another arm (132) of the first half-wave dipole, the second half-wave dipole an arm
(122) and the brachium of another arm (134) of the second half-wave dipole is equal, central task frequency point in the free space for being 0.25 times
Corresponding wavelength.
6. the aerial array according to claim 1 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
Stating reflecting plate (3) back side is the FR-4 square dielectric-slab for covering copper.
7. the aerial array according to claim 2 for improving trielectrode gradient unit cross polarization discrimination, which is characterized in that institute
State first medium plate (11), second medium plate (12) and third dielectric-slab (13) with a thickness of 0.5mm-1.6mm；Using
Rogers4350B plate or FR-4 plate.
8. the aerial array of trielectrode gradient unit cross polarization discrimination is improved described in any one according to claim 1 ~ 7,
It is characterized in that, the aerial array for improving trielectrode gradient unit cross polarization discrimination is applied in an array as subarray, son
Array can arbitrarily arrange.
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| CN110808450B (en) * | 2019-10-17 | 2021-04-09 | 华南理工大学 | Dual-polarized antenna and radiating element thereof |
| CN116979278B (en) * | 2023-09-22 | 2023-12-19 | 武汉大学 | Satellite-borne low-frequency electric small broadband triaxial vector array and signal direction and polarization estimation method |
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| JPS5862902A (en) * | 1981-10-09 | 1983-04-14 | Mitsubishi Electric Corp | Printed dipole antenna |
| CN1674357A (en) * | 2004-02-11 | 2005-09-28 | 索尼国际(欧洲)股份有限公司 | Circular polarised array antenna |
| CN103503231A (en) * | 2011-05-02 | 2014-01-08 | 安德鲁有限责任公司 | Tri-pole antenna element and antenna array |
| CN205863380U (en) * | 2016-06-30 | 2017-01-04 | 上海贝尔股份有限公司 | A kind of dual polarised radiation oscillator and a kind of multifrequency multi-port antenna device |
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| US8928542B2 (en) * | 2011-08-17 | 2015-01-06 | CBF Networks, Inc. | Backhaul radio with an aperture-fed antenna assembly |
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| JPS5862902A (en) * | 1981-10-09 | 1983-04-14 | Mitsubishi Electric Corp | Printed dipole antenna |
| CN1674357A (en) * | 2004-02-11 | 2005-09-28 | 索尼国际(欧洲)股份有限公司 | Circular polarised array antenna |
| CN103503231A (en) * | 2011-05-02 | 2014-01-08 | 安德鲁有限责任公司 | Tri-pole antenna element and antenna array |
| CN205863380U (en) * | 2016-06-30 | 2017-01-04 | 上海贝尔股份有限公司 | A kind of dual polarised radiation oscillator and a kind of multifrequency multi-port antenna device |
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