CN208315745U - A kind of polarization reconfigurable antenna array based on feeding network - Google Patents
A kind of polarization reconfigurable antenna array based on feeding network Download PDFInfo
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- CN208315745U CN208315745U CN201820754346.4U CN201820754346U CN208315745U CN 208315745 U CN208315745 U CN 208315745U CN 201820754346 U CN201820754346 U CN 201820754346U CN 208315745 U CN208315745 U CN 208315745U
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Abstract
The utility model discloses a kind of polarization reconfigurable antenna array based on feeding network, it is equidistantly arranged by antenna element along orthogonal direction and forms aerial array, each antenna element includes one piece of square medium substrate, the front of the medium substrate is with being equipped with one layer of metal, the metal is provided with 2 plated-through holes on the ground, each plated-through hole is passed through by a L shape metal probe, and one end of L shape metal probe is extend out to above metal ground, the back side of other end arrival medium substrate, two L shape metal probes are mutually perpendicular to along plane where medium substrate, a corner cut square-shaped metal plate is vacantly equipped in the top of L shape metal probe, the medium substrate back side is equipped with a feed leg, the feed leg includes two feed minor matters, every feed minor matters are correspondingly connected with a L shape metal probe on antenna element respectively, all feeds Branch constitutes coaxial feed network.The utility model realizes the conversion of aerial array transmitting linear polarised electromagnetic wave or left-right-hand circular polarization wave.
Description
Technical field
The utility model belongs to electromagnetic technology field, in particular to a kind of polarization reconfigurable antenna based on feeding network
Array.
Background technique
The major function of antenna can be summarized as following two points: first is that energy conversion function；Second is that realizing the orientation spoke of energy
It penetrates and directional reception.The working characteristics of antenna directly affects the overall performance of wireless communication system, thus it is in whole system
Indispensable important component.Traditional antenna is designed, its structure and performance parameters for some given application
It is fixed and invariable.However, working as the environment of antenna applications, required performance parameter changed, even one small
Variation, engineers all need redesign antenna according to new index, therefore reconfigurable antenna comes into being.
In the case where current wireless communication is fast-developing, the communication equipments such as radar, antenna are also increasing, from the external world
Electromagnetic Interference it is increasing to the threat of various equipment, electromagnetic wave propagation control become electromagnetic arts research hot spot,
Polarization of electromagnetic wave control is the important research content of electromagnetic wave space transmission controe, in radio technology, utilizes not same polarization
Electromagnetic wave have different propagation characteristics, in conjunction with dual-mode antenna polarization characteristic, it can be achieved that radio signal best transmitting
And reception.Polarization of ele is all widely used in fields such as communication system, anti-interference and target identifications, therefore carries out to it
Research has great significance.With high frequency satellite communication system, radar, wireless communication system, the especially whole world 3G and 4G network
The rapid development of construction, the requirement to antenna is also higher and higher, and one side antenna is with multiple-working mode and has good
Transmission performance；On the other hand, mitigate the weight of antenna again, reduce antenna volume and reduce cost.If modern communication systems
Traditional antenna is still used, then in order to meet the requirement that system dynamic changes running parameter, the quantity of antenna will substantially increase
Add.Thus the drawbacks of bringing is exactly the cost for the system that not only increases, and increases the volume of system, the electromagnetic coupling between antenna
Interference can also become very serious, be degrading the electromagnetic compatibility characteristic of system.Just because of such demand, polarize restructural day
The concept of line is suggested and is flourished.Polarization reconfigurable antenna array based on feeding network is reconfigurable antenna group
At array, radio frequency switch element is added on feeding network and controls its conducting form, realizes multiple polarization sides of aerial array
Formula, with higher gain, performance is more brilliant.
Utility model content
In order to solve the technical issues of above-mentioned background technique proposes, the utility model is intended to provide a kind of based on feeding network
Polarization reconfigurable antenna array, realize aerial array transmitting linear polarised electromagnetic wave or left-right-hand circular polarization wave conversion.
In order to achieve the above technical purposes, the technical solution of the utility model are as follows:
A kind of polarization reconfigurable antenna array based on feeding network, it is equidistant along orthogonal direction by N × N number of antenna element
Arrangement forms N × N aerial array, and each antenna element includes one piece of square medium substrate, and the front of the medium substrate is equipped with one
Layer metal, which is provided with 2 plated-through holes on the ground, and each plated-through hole is passed through by a L shape metal probe, and L
One end of shape metal probe is extend out to above metal ground, and the other end reaches the back side of medium substrate, and two L shape metal probes are along Jie
Plane where matter substrate is mutually perpendicular to, and is vacantly equipped with a corner cut square-shaped metal plate, medium in the top of L shape metal probe
Substrate back be equipped with a feed leg, the feed leg include two feed minor matters, every feed minor matters respectively with antenna list
A L shape metal probe in member is correspondingly connected with, and N × N feed leg constitutes coaxial feed network, passes through every feedback of control
The on state of two feed minor matters in electric branch, makes each antenna element in only one L shape metal probe of synchronization
Feed, is difference when being fed on the antenna element of adjacent row or column to realize the left and right hand circular polarization of aerial array
When the L shape metal probe in direction, constant amplitude left and right hand circular polarization wave in the same direction synthesizes line polarization wave.
Preferred embodiment based on the above-mentioned technical proposal, two feed minor matters in same feed leg include 2 feedbacks
Electric port, the crevice place series connection pin switching diode between 2 feed ports, at the both ends of pin switching diode, setting is straight
Galvanic electricity potential source, to control the conducting of feed minor matters.
Preferred embodiment based on the above-mentioned technical proposal, the diameter of the plated-through hole are greater than the L shape metal across the hole
The diameter of probe contacts with preventing metal with L shape metal probe.
Preferred embodiment based on the above-mentioned technical proposal, the metal, plated-through hole, L shape metal probe and corner cut just
Square metal plate matter is metallic copper.
Preferred embodiment based on the above-mentioned technical proposal, the medium substrate material are FR4, and dielectric constant 4.4, loss is just
It is cut to 0.025.
By adopting the above technical scheme bring the utility model has the advantages that
(1) prior art only designs single polarization reconfigurable antenna, does not there is polarization reconfigurable antenna array, this is practical new
Type has been put forward for the first time polarization reconfigurable antenna array；
(2) the polarization reconfigurable antenna array in the utility model can be realized simultaneously linear polarization and left-right-hand circular polarization and
The conversion of linear polarization, function is more, and performance is high；
(3) one layer of dielectric-slab is only utilized in the utility model, structure is simple, and easy processing is able to carry out cyclic extension,
So that flexible structure is changeable, it is easy to accomplish volume production.
Detailed description of the invention
Fig. 1 .1 is 4 × 4 aerial arrays and one of antenna element schematic diagram in embodiment；
Fig. 1 .2,1.3 and 1.4 are the metal of 4 × 4 aerial arrays ground schematic diagram, metal probe schematic diagram and back respectively
Feeding network schematic diagram；
Fig. 2 .1,2.2,2.3,2.4 and 2.5 are the front schematic view of each antenna element, metal ground schematic diagram, gold respectively
Belong to 45 degree of schematic diagrames of probe, back medium substrate schematic diagram and right view；
Fig. 3 is local feed's network diagram；
Electromagnetic wave realizes S11 figure, the axis of left or right rotation circular polarisation when Fig. 4 .1,4.2 and 4.3 are diode current flow respectively
Than figure and gain diagram；
Fig. 5 .1,5.2 and 5.3 are respectively that aerial array row polarizes identical and arranges when polarizing different polarized two kinds of synthetic thread
Various forms of S11 figures, axis are than figure and gain diagram.
Label declaration: 1, corner cut square-shaped metal plate；2, metal；3, medium substrate；4, plated-through hole；5, L shape gold
Belong to probe.
Specific embodiment
Below with reference to attached drawing, the technical solution of the utility model is described in detail.
The present embodiment is equidistantly arranged to make up by 16 antenna elements, and Fig. 1 .1 is one 4 × 4 array and a day
Line cellular construction figure, each antenna element side length are 90mm.Fig. 1 .2,1.3 and 1.4 are the metal map of array, feed spy respectively
Needle figure and back feeding network figure.Fig. 2 .1,2.2,2.3,2.4 and 2.5 are the front elevation of each unit, metal respectively
Figure, 45 degree of probe figures, back medium substrate figures, right view, Fig. 3 is local feed's network.As Fig. 2 .1 be cellular construction just
Face figure, the side length of corner cut square-shaped metal plate 1 are 49mm, a length of 18mm of incisal angle edge, and from metal 2 height is 16mm.Metal
Corner cut square-shaped metal plate 1 is isolated with medium substrate 3 on ground 2, prevents Electromgnetically-transparent from passing by, and 2 makes a call to two gold above to metal
The diameter of categoryization through-hole 4, the diameter ratio L shape metal probe 5 in hole is big, bore dia 2mm, it is therefore an objective to preventing metal 2 and L
Shape metal probe 5 contacts.Fig. 2 .2 is metal map, through metallization logical 4 it can be seen that medium substrate 3.Fig. 2 .4 is back figure
Piece, it can be seen that medium substrate 3 and L shape metal probe 5, the material of medium substrate 3 are FR4 (dielectric constant 4.4, losses
It is just being cut to 0.025), with a thickness of 1.6mm.Fig. 2 .5 is the right view of individual antenna unit, and L shape metal probe vertical height is
10mm, horizontal length 21mm, diameter 1.2mm.If Fig. 3 is local feed's network, it can be seen that each section of impedance
Transformation, above a total of 4 cracks, respectively weld a pin switching diode, crack both ends connect D.C. regulated power supply it is positive and negative
Parallel form can be used in pole, colleague and interlacing, and two L shape metal probes will be fed respectively.When each antenna element of control
The L shape metal probe of the diode current flow of the same position of feeding network, corresponding same position is fed, it can be achieved that antenna array
Column realize left or right rotation circular polarisation, and when the feed L shape metal probe difference of adjacent row or column, according to the reason of electromagnetic field
By constant amplitude left-right-hand circular polarization wave in the same direction can synthesize line polarization wave, therefore can be combined into linear polarised electromagnetic wave.
Electromagnetic wave realizes left or right rotation circle when Fig. 4 .1,4.2 and 4.3 in the utility model are diode current flow respectively
Polarized S11 (reflection coefficient), axis ratio, gain diagram, mark left-handed and dextrorotation respectively；Fig. 5 .1,5.2 and 5.3 are antenna respectively
Array row polarization is identical and arranges the polarized two different form of S11 of synthetic thread, axis ratio, gain diagram when polarizing different, marks respectively
Remember line 1 and line 2.Coupling due to feeding network etc. influences, left-handed to have different with dextrorotation.
Embodiment is only to illustrate the technical idea of the utility model, and protection scope of this utility model cannot be limited by this,
It is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within practical
Within the scope of novel protected.
Claims (5)
1. a kind of polarization reconfigurable antenna array based on feeding network, it is characterised in that: by N × N number of antenna element along orthogonal
Direction, which equidistantly arranges, forms N × N aerial array, and each antenna element includes one piece of square medium substrate, the medium substrate
With being equipped with one layer of metal, which is provided with 2 plated-through holes on the ground, and each plated-through hole is visited by a L shape metal in front
Needle passes through, and one end of L shape metal probe is extend out to above metal ground, and the other end reaches the back side of medium substrate, two L shape gold
Belong to probe to be mutually perpendicular to along plane where medium substrate, is vacantly equipped with a corner cut square gold in the top of L shape metal probe
Belong to plate, the medium substrate back side is equipped with a feed leg, which includes two feed minor matters, every feed minor matters difference
It is correspondingly connected with a L shape metal probe on antenna element, N × N feed leg constitutes coaxial feed network, passes through control
The on state of two feed minor matters in every feed leg makes each antenna element in only one L shape gold of synchronization
Belong to probe feed, so that the left and right hand circular polarization of aerial array is realized, when what is fed on the antenna element of adjacent row or column
For different directions L shape metal probe when, constant amplitude left and right hand circular polarization wave in the same direction synthesizes line polarization wave.
2. the polarization reconfigurable antenna array based on feeding network according to claim 1, it is characterised in that: same feed
Two feed minor matters of branch road include 2 feed ports, the crevice place series connection pin switch two between 2 feed ports
DC voltage source is arranged at the both ends of pin switching diode, to control the conducting of feed minor matters in pole pipe.
3. the polarization reconfigurable antenna array based on feeding network according to claim 1, it is characterised in that: the metallization
The diameter of through-hole is greater than the diameter of the L shape metal probe across the hole, contacts with L shape metal probe with preventing metal.
4. the polarization reconfigurable antenna array based on feeding network according to claim 1, it is characterised in that: the metal
Ground, plated-through hole, L shape metal probe and corner cut square-shaped metal plate matter are metallic copper.
5. the polarization reconfigurable antenna array based on feeding network according to claim 1, it is characterised in that: the medium base
Plate matter is FR4, dielectric constant 4.4, loss tangent 0.025.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754346.4U CN208315745U (en) | 2018-05-21 | 2018-05-21 | A kind of polarization reconfigurable antenna array based on feeding network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754346.4U CN208315745U (en) | 2018-05-21 | 2018-05-21 | A kind of polarization reconfigurable antenna array based on feeding network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493593A (en) * | 2018-05-21 | 2018-09-04 | 南京信息工程大学 | A kind of polarization reconfigurable antenna array based on feeding network |
| CN110120585A (en) * | 2019-05-21 | 2019-08-13 | 哈尔滨工业大学 | The LCD electric-controlled scanning reflection array antenna of circular polarisation |
| CN110911834A (en) * | 2019-12-02 | 2020-03-24 | 成都瑞迪威科技有限公司 | Phased array antenna capable of realizing left-right rotation circular polarization switching |
| CN111430891A (en) * | 2020-03-13 | 2020-07-17 | 华南理工大学 | Broadband low-profile antenna based on polarization correlation super-surface structure |
-
2018
- 2018-05-21 CN CN201820754346.4U patent/CN208315745U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493593A (en) * | 2018-05-21 | 2018-09-04 | 南京信息工程大学 | A kind of polarization reconfigurable antenna array based on feeding network |
| CN108493593B (en) * | 2018-05-21 | 2023-10-13 | 南京信息工程大学 | Polarization reconfigurable antenna array based on feed network |
| CN110120585A (en) * | 2019-05-21 | 2019-08-13 | 哈尔滨工业大学 | The LCD electric-controlled scanning reflection array antenna of circular polarisation |
| CN110911834A (en) * | 2019-12-02 | 2020-03-24 | 成都瑞迪威科技有限公司 | Phased array antenna capable of realizing left-right rotation circular polarization switching |
| CN111430891A (en) * | 2020-03-13 | 2020-07-17 | 华南理工大学 | Broadband low-profile antenna based on polarization correlation super-surface structure |
| CN111430891B (en) * | 2020-03-13 | 2021-09-21 | 华南理工大学 | Broadband low-profile antenna based on polarization correlation super-surface structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190101 Termination date: 20200521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |