CN207677078U - A kind of limitation of high harmonics dual polarized antenna - Google Patents
A kind of limitation of high harmonics dual polarized antenna Download PDFInfo
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- CN207677078U CN207677078U CN201721697383.8U CN201721697383U CN207677078U CN 207677078 U CN207677078 U CN 207677078U CN 201721697383 U CN201721697383 U CN 201721697383U CN 207677078 U CN207677078 U CN 207677078U
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- 230000009977 dual effect Effects 0.000 title claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000010295 mobile communication Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 12
- 230000010287 polarization Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000002955 isolation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a kind of limitation of high harmonics dual polarized antennas, including first medium plate, second medium plate, third dielectric-slab, stack patch, drive patch, feeding network and filter module, first medium plate, second medium plate and third dielectric-slab stack with one heart successively, gap is equipped between two dielectric-slabs, patch is stacked to be arranged in the upper surface of first medium plate, driving patch is arranged in the upper surface of second medium plate, feeding network is arranged in the lower surface of second medium plate, positioned at the underface of driving patch, it is connect with driving patch, feeding network includes the first feed line group and the second feed line group of Orthogonally arrangement, filtering, which receives, to be arranged in the upper surface of third dielectric-slab, it is connect with feeding network, it is provided with floor below third dielectric-slab, the lower surface of third dielectric-slab is connect with floor.The utility model is related to mobile communication technology field, a kind of limitation of high harmonics dual polarized antenna is compact-sized, size is small, at low cost and convenient for integrated.
Description
Technical field
The utility model is related to mobile communication technology field more particularly to a kind of limitation of high harmonics dual polarized antennas.
Background technology
With the rapid development of the communication technology, mobile communication subscriber quantity increases in series, and data service constantly upgrades, and compels
It highly necessary asks and further expands message capacity.Antenna for base station overcomes more with technologies such as diversity, polarization, MIMO, massive MIMO
Diameter decline improves and is isolated, inhibits interference etc., it is expected that further improving channel quality.Currently, including in complicated electromagnetic environment
In the design of the large-scale antenna arrays such as 2G, 3G, 4.5G, reduce different units, between different elements intercoupling with interference at
For major issue.Occur that there is the antenna of certain filter effect to be related in the prior art, such as cascade duplex is inputted in antenna
Device has and filters highly selective, raising system transmitting-receiving frequency isolation, inhibition interference well, but causes antenna size big, structure
It is complicated.In addition, the frequency range inhibited after being inserted into duplexer is relatively narrow, not for channel higher hamonic wave and frequency multiplication interference suppressioning effect
It is good, larger Insertion Loss is introduced, causes the gain of antenna to decline big.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide compact-sized one kind, high isolation, filtering property
The good limitation of high harmonics dual polarized antenna of energy.
Technical solution used by the utility model is：A kind of limitation of high harmonics dual polarized antenna, including first medium
Plate, second medium plate, third dielectric-slab, stacking patch, driving patch, feeding network and filter module, the first medium plate,
Second medium plate and third dielectric-slab stack with one heart successively, and gap is equipped between two dielectric-slabs, and the stacking patch is set
It sets in the upper surface of the first medium plate, the driving patch is arranged in the upper surface of the second medium plate, the feed
Network settings are located at the underface of the driving patch, with the driving patch in the lower surface of the second medium plate
Connection, the feeding network includes the first feed line group and the second feed line group of Orthogonally arrangement, and the filtering receives setting and exists
The upper surface of the third dielectric-slab, connect with the feeding network, is provided with floor below the third dielectric-slab, and described the
The lower surface of three dielectric-slabs is connect with the floor.
As being further improved for said program, the driving patch includes being driven outside patch and ring in the ring placed with one heart
Patch is driven, patch center is driven to offer rectangular channel outside the ring, driving patch is placed in the rectangular channel in the ring
The heart drives patch to form rectangular ring gap with outside the ring.
As being further improved for said program, the first feed line group includes the first feed line and the second feed line,
The second feed line group includes third feed line and the 4th feed line, first feed line, the second feed line, third feed
Line, the 4th feed line are funnel type gradual change feed line, and first feed line bottom is opposite with second feed line bottom,
First feed line bottom with second feed line bottom there is gap, third feed line bottom to be presented with the described 4th
Electric wire bottom is connected.
As being further improved for said program, first feed line bottom and second feed line bottom are and institute
State driving patch connection in ring.
As being further improved for said program, the first plated-through hole and the second gold medal are provided on the second medium plate
Categoryization through-hole, first feed line bottom drive patch to connect by the first plated-through hole in the ring, and described second
Feed line bottom drives patch to connect by the second plated-through hole in the ring.
As being further improved for said program, the filter module includes the first filter module and the second filter module,
First filter module and second filter module include circular filter piece and rectangular filter piece, the circular filter piece
It is connected by impedance line with the rectangular filter piece.
As being further improved for said program, the circular filter piece open the first gap, the second gap, third gap and
The circular filter piece is separated into two and half by the 4th gap, first gap, the second gap, third gap and the 4th gap
Circle, first gap and second gap are arranged in parallel, and the third gap and the 4th gap are arranged in parallel.
As being further improved for said program, the rectangular filter on piece offers the 5th gap, the 6th gap, the 7th
Gap and the 8th gap, the 5th gap, the 6th gap and the 7th gap are vertical with the 8th gap, the 5th seam
Gap, the 6th gap, the 7th gap and the 8th gap constitute E types gap.
As being further improved for said program, first is provided between the second medium plate and the third dielectric-slab
The input terminal of conductive metal column and the second conductive metal column, the first feed line group is filtered by the first conductive metal column and first
The output end of wave module connects, and the input terminal of the second feed line group passes through the second conductive metal column and the second filter module
Output end connects.
As being further improved for said program, the stacking patch is square.
The utility model has the beneficial effects that：
A kind of limitation of high harmonics dual polarized antenna, dual polarized antenna increase filter structure, reach and inhibit frequency multiplication and high order
The effect of the interference of harmonic wave can be prevented to other LTE base station antennas WLAN, WIMAX etc. and be interfered.And the antenna structure is tight
Gather, size it is small, it is at low cost can extensive use, and convenient for integrated, both can be used alone, and can also be used as array antenna unit.
It can be additionally used in antenna for base station or micro-base station antenna and other equipment ad hoc network etc..
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the utility model limitation of high harmonics dual-polarized antenna structure schematic diagram；
Fig. 2 is the utility model limitation of high harmonics dual-polarized antenna structure perspective view；
Fig. 3 is the utility model limitation of high harmonics dual-polarized antenna structure side view；
Fig. 4 is the utility model limitation of high harmonics dual polarized antenna driving paster structure schematic diagram；
Fig. 5 is the utility model limitation of high harmonics dual polarized antenna feed network structures schematic diagram；
Fig. 6 is the utility model limitation of high harmonics dual polarized antenna filtering modular structure schematic diagram；
Fig. 7 is the faces the utility model limitation of high harmonics dual polarized antenna centre frequency E directional diagram；
Fig. 8 is the faces the utility model limitation of high harmonics dual polarized antenna centre frequency H directional diagram；
Fig. 9, which is the utility model limitation of high harmonics dual polarization, has filter structure and the prior art without filter structure antenna
Ratio of gains line chart.
Specific implementation mode
The technique effect of the design of the utility model, concrete structure and generation is carried out below with reference to embodiment and attached drawing
Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.
It should be noted that the descriptions such as up, down, left, right, before and after used in the utility model be only relative to
In attached drawing for the mutual alignment relation of each component part of the utility model.
In addition, unless otherwise defined, the technology of all of technologies and scientific terms used here by the article and the art
The normally understood meaning of personnel is identical.Term used in the description is intended merely to description specific embodiment herein, without
It is to limit the utility model.Term " and or " used herein includes appointing for one or more relevant Listed Items
The combination of meaning.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Fig. 1 is the utility model limitation of high harmonics dual-polarized antenna structure schematic diagram, and Fig. 2 is that the utility model high order is humorous
Wave inhibits dual-polarized antenna structure perspective view, and Fig. 3 is the utility model limitation of high harmonics dual-polarized antenna structure side view, knot
Fig. 1, Fig. 2 and Fig. 3, a kind of limitation of high harmonics dual polarized antenna, including first medium plate 1, second medium plate 2, third is closed to be situated between
Scutum 3, floor 4 stack patch 5, driving patch 6, feeding network 7 and filter module 8.
In the present embodiment, first medium plate 1 and second medium plate 2 are all made of compound low-loss double face copper, and dielectric is normal
Number is 2.65, and thickness 1mm, third dielectric-slab 3 uses low-loss high-frequency composite material, thickness 0.22mm.First medium plate
1, second medium plate 2 and third dielectric-slab 3 stack with one heart successively, and first is provided between first medium plate 1 and second medium plate 2
Gap 01, in the present embodiment, 01 height H1=5mm of the first gap is provided between second medium plate 2 and third dielectric-slab 3
Two gaps 02,02 height H2=0.58mm of the second gap.
Specifically, 1 upper surface of first medium plate, which is printed with, stacks patch 5, in the present embodiment, stacking patch 5 is square,
Increase and stack patch 5 for enhancing impedance bandwidth and antenna gain, and provide the radiation zero in stopband, improves filtering property
Energy.
2 upper surface of second medium plate is printed with driving patch 6, and Fig. 4 is the utility model limitation of high harmonics dual polarization day
Line drives paster structure schematic diagram, and with reference to Fig. 3 and Fig. 4, driving patch 6 includes being driven in patch 61 and ring outside the ring placed with one heart
Patch 62 is driven, in the present embodiment, drives patch 61 square outside ring, length of side P2=30.5mm drives patch 62 in ring
Square, length of side 4.5mm, ring drives 61 center of patch to offer rectangular channel outside, and driving patch 62 is placed on rectangle in ring
Groove center, the interior driving patch 62 of ring and driving patch 61 formation rectangular ring gap 63, the gap width of annular gap 63 outside ring
For 1.5mm.Two opposite side edges that patch 62 is driven on second medium plate 2, in corresponding ring, are provided with plated-through hole, respectively
For the first plated-through hole 21 and the second plated-through hole 22, in the present embodiment, plated-through hole 21 and the second plated-through hole
22 diameter is 0.6mm.
Fig. 5 is the utility model limitation of high harmonics dual polarized antenna feed network structures schematic diagram, with reference to Fig. 2, Fig. 4 and
Fig. 5, feeding network 7 include the first feed line group and the second feed line group of Orthogonally arrangement, and the first feed line group includes the first feedback
Electric wire 71 and the second feed line 72, the second feed line group include third feed line 73 and the 4th feed line 74, the first feed line 71,
Second feed line 72, third feed line 73 and the 4th feed line 74 are funnel type gradual change feed line.
Specifically, 71 bottom of the first feed line drives patch 62 to connect by the first plated-through hole 21 in ring, second
72 bottom of feed line drives patch 62 to connect by the second plated-through hole 22 in ring, forms vertical polarization radiating antenna group.
First feed line 71 and 72 top width of the second feed line are W1=7mm, and bottom width is W2=0.55mm, is highly
L1=4mm.
First feed line, 71 bottom is opposite with 72 bottom of the second feed line, and has gap.73 bottom of third feed line with
4th feed line, 74 bottom is connected, and forms hourglass shape gradual change feed line, and electromagnetic coupling feed, shape are constituted with patch 62 is driven in ring
At horizontal polarization radiating antenna group.The top width of third feed line 73 and the 4th feed line 74 is W3=5mm, bottom width
It is W4=0.2mm, the height of hourglass shape gradual change feed line is 17mm.
Two feed line groups are fed by electromagnetic coupling and plated-through hole with driving patch 6 respectively, are formed bipolar
Change radiation.And the coupling between feeding network 7 and driving patch 6 is related with the width of feed line, adjusts the width pair of feed line
The reflectance factor of antenna has a great impact, and the utility model is related to further expanding the work band of antenna using gradual change feed line
It is wide.
Fig. 6 is the utility model limitation of high harmonics dual polarized antenna filtering modular structure schematic diagram, with reference to Fig. 2, Fig. 3 and
Fig. 6, is provided with the first conductive metal column 91 and the second conductive metal column 92 between second medium plate 2 and third dielectric-slab 3, and first
Conductive metal column 91 and the second conductive metal column 92 are vertical with second medium plate 2 and third dielectric-slab 3.Filter module 8 includes
The structure of first filter module and the second filter module, the first filter module and the second filter module is identical.Specifically, the first feedback
The input terminal of electric wire group is connect by the first conductive metal column 91 with the output end 80 of the first filter module, the second feed line group
Input terminal is connect by the second conductive metal column 92 with the output end 80 of the second filter module.
Specifically, the first filter module and the second filter module include circular filter piece 81 and rectangular filter piece 82, this
In embodiment, the radius of circular filter piece 81 is 1.76mm, and the length of rectangular filter piece 82 is 3.29mm, width 2.31mm.
The output end 80 of first filter module is connect by impedance line 83 with circular filter piece 81 and rectangular filter piece 82, the present embodiment
In, impedance line 83 is in shaped like narrow.
The first gap 811, the second gap 812, third gap 813 and the 4th gap are offered on circular filter piece 81
814, the first gap 811, the second gap 812, third gap 813 and the 4th gap 814 width be that 0.7mm, length are
1.74mm.Circular filter piece 81 is divided into two by the first gap 811, the second gap 812, third gap 813 and the 4th gap 814
Semicircle, wherein the first gap 811 and the second gap 812 are arranged in parallel, and third gap 813 and the 4th gap 814 are arranged in parallel.
Impedance line 83 and the first gap 811, the second gap 812, third gap 813, the 4th gap 814 and circular filter piece 81 are in circle
The center of filter plate 81 constitutes cross.
The 5th gap 821, the 6th gap 822, the 7th gap 823 and the 8th gap are offered on rectangular filter piece 82
824, the 5th gap 821, the 6th gap 822, the 7th gap 823 and the 8th gap 824 width be 0.7mm.Wherein, the 5th
Gap 821, the 6th gap 822, the 7th gap 823 are vertical with the 8th gap 824, the 5th gap 821, the 6th gap 822,
Seven gaps 823 and the 8th gap 824 constitute E types gap.
The lower surface of third dielectric-slab 3 is floor 4, and third dielectric-slab 3 connect formation ground structure altogether with floor 4.
By setting up two respectively in the signal input port of horizontal polarization radiating antenna group and vertical polarization radiating antenna group
Group filter structure is electrically connected by metallization VIA with dual polarized antenna feeding network, and dual-port is avoided to couple, and realizes high isolation
With good cross polarization ratio performance, the Out-of-band rejection of multiple frequence is realized, realize the ultra-wide stopband of 4GHz to 20GHz, reach five
The frequency multiplication of frequency multiplication inhibits, and is approximately less than -10dB in the gain of stopband internal antenna, and Out-of-band rejection ability is strong, has good filter
Wave performance.
Fig. 7 is the faces the utility model limitation of high harmonics dual polarized antenna centre frequency E directional diagram, and Fig. 8 is that this practicality is new
The faces type limitation of high harmonics dual polarized antenna centre frequency H directional diagram, as shown in Figure 7 and Figure 8, the utility model antenna is at center
Frequency high isolation, and there is low-cross polarization ratio.
Fig. 9, which is the utility model limitation of high harmonics dual polarization, has filter structure and the prior art without filter structure antenna
Ratio of gains line chart, as shown in figure 9, the utility model antenna can have good filtering outside the band of 4GHz to 20GHz
Energy.The bandwidth of the high frequency stopband of insertion wave filter aft antenna obviously broadens, and the Out-of-band rejection in 5-8GHz frequency bands is fine, gain
Substantially remain in -10dB or less.
The utility model antenna structure both can be used alone convenient for integrating, and can also be used as array antenna unit.It can use
In antenna for base station or micro-base station antenna and miscellaneous equipment ad hoc network etc..In addition to dual polarized antenna a period of time has filter effect, simultaneously
Increased new filter structure section is low, compact-sized to be directly integrated on the reflecting plate of antenna, reaches and inhibits frequency multiplication and high order
The effect of the interference of harmonic wave can be prevented to other LTE base station antennas WLAN, WIMAX etc. and be interfered.And the antenna size
It is small, it is at low cost can extensive use.
It is to be illustrated to the preferable implementation of the utility model, but the utility model creation is not limited to institute above
Embodiment is stated, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation is replaced, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of limitation of high harmonics dual polarized antenna, which is characterized in that it includes first medium plate, second medium plate, third
Dielectric-slab stacks patch, driving patch, feeding network and filter module, the first medium plate, second medium plate and third Jie
Scutum stacks with one heart successively, and gap is equipped between two dielectric-slabs, and the stacking patch is arranged in the first medium plate
Upper surface, the driving patch is arranged in the upper surface of the second medium plate, and the feeding network is arranged described second
The lower surface of dielectric-slab is located at the underface of the driving patch, is connect with the driving patch, the feeding network packet
The the first feed line group and the second feed line group of Orthogonally arrangement are included, the filtering receives the upper table being arranged in the third dielectric-slab
Face is connect with the feeding network, and floor, the lower surface of the third dielectric-slab and institute are provided with below the third dielectric-slab
State floor connection.
2. a kind of limitation of high harmonics dual polarized antenna according to claim 1, which is characterized in that the driving patch packet
It includes in the ring placed with one heart and drives patch outside driving patch and ring, drive patch center to offer rectangular channel outside the ring, it is described
Driving patch is placed on the rectangle groove center in ring, drives patch to form rectangular ring gap with outside the ring.
3. a kind of limitation of high harmonics dual polarized antenna according to claim 2, which is characterized in that first feed line
Group includes the first feed line and the second feed line, and the second feed line group includes third feed line and the 4th feed line, described
First feed line, the second feed line, third feed line, the 4th feed line are funnel type gradual change feed line, first feed
Line bottom is opposite with second feed line bottom, between first feed line bottom and second feed line bottom have
Gap, third feed line bottom are connected with the 4th feed line bottom.
4. a kind of limitation of high harmonics dual polarized antenna according to claim 3, which is characterized in that first feed line
Bottom and second feed line bottom drive patch to connect in the ring.
5. a kind of limitation of high harmonics dual polarized antenna according to claim 4, which is characterized in that the second medium plate
On be provided with the first plated-through hole and the second plated-through hole, first feed line bottom by the first plated-through hole with
Driving patch connection in the ring, second feed line bottom are connected by driving patch in the second plated-through hole and the ring
It connects.
6. a kind of limitation of high harmonics dual polarized antenna according to claim 5, which is characterized in that the filter module packet
The first filter module and the second filter module are included, first filter module and second filter module include circular filter
Piece and rectangular filter piece, the circular filter piece are connected with the rectangular filter piece by impedance line.
7. a kind of limitation of high harmonics dual polarized antenna according to claim 6, which is characterized in that the circular filter piece
Open the first gap, the second gap, third gap and the 4th gap, first gap, the second gap, third gap and Fpir Crevices
The circular filter piece is separated into two semicircles by gap, and first gap and second gap are arranged in parallel, the third
Gap and the 4th gap are arranged in parallel.
8. a kind of limitation of high harmonics dual polarized antenna according to claim 7, which is characterized in that the rectangular filter piece
On offer the 5th gap, the 6th gap, the 7th gap and the 8th gap, the 5th gap, the 6th gap and the 7th gap
Vertical with the 8th gap, the 5th gap, the 6th gap, the 7th gap and the 8th gap constitute E types gap.
9. a kind of limitation of high harmonics dual polarized antenna according to claim 8, which is characterized in that the second medium plate
Be provided with the first conductive metal column and the second conductive metal column between the third dielectric-slab, the first feed line group it is defeated
Enter end to connect with the output end of the first filter module by the first conductive metal column, the input terminal of the second feed line group passes through
Second conductive metal column is connect with the output end of the second filter module.
10. a kind of limitation of high harmonics dual polarized antenna according to claim 1, which is characterized in that the stacking patch
It is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697383.8U CN207677078U (en) | 2017-12-07 | 2017-12-07 | A kind of limitation of high harmonics dual polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721697383.8U CN207677078U (en) | 2017-12-07 | 2017-12-07 | A kind of limitation of high harmonics dual polarized antenna |
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| Publication Number | Publication Date |
|---|---|
| CN207677078U true CN207677078U (en) | 2018-07-31 |
Family
ID=62968736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721697383.8U Withdrawn - After Issue CN207677078U (en) | 2017-12-07 | 2017-12-07 | A kind of limitation of high harmonics dual polarized antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075229A (en) * | 2017-12-07 | 2018-05-25 | 深圳市维力谷无线技术股份有限公司 | A kind of limitation of high harmonics dual polarized antenna |
| CN111293413A (en) * | 2020-03-03 | 2020-06-16 | 电子科技大学 | Compact broadband filtering antenna based on cross-coupling structure and MIMO antenna thereof |
| CN111883928A (en) * | 2019-05-02 | 2020-11-03 | 诺基亚通信公司 | Multiband antenna device |
-
2017
- 2017-12-07 CN CN201721697383.8U patent/CN207677078U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075229A (en) * | 2017-12-07 | 2018-05-25 | 深圳市维力谷无线技术股份有限公司 | A kind of limitation of high harmonics dual polarized antenna |
| CN108075229B (en) * | 2017-12-07 | 2024-02-06 | 深圳市维力谷无线技术股份有限公司 | High-order harmonic suppression dual polarized antenna |
| CN111883928A (en) * | 2019-05-02 | 2020-11-03 | 诺基亚通信公司 | Multiband antenna device |
| CN111883928B (en) * | 2019-05-02 | 2022-01-25 | 诺基亚通信公司 | Multiband antenna device |
| US11276923B2 (en) | 2019-05-02 | 2022-03-15 | Nokia Solutions And Networks Oy | Multi-band antenna arrangement |
| CN111293413A (en) * | 2020-03-03 | 2020-06-16 | 电子科技大学 | Compact broadband filtering antenna based on cross-coupling structure and MIMO antenna thereof |
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