CN206301951U - Slot-array antennas - Google Patents
Slot-array antennas Download PDFInfo
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- CN206301951U CN206301951U CN201621488659.7U CN201621488659U CN206301951U CN 206301951 U CN206301951 U CN 206301951U CN 201621488659 U CN201621488659 U CN 201621488659U CN 206301951 U CN206301951 U CN 206301951U
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Abstract
The utility model discloses a kind of Slot-array antennas, it is characterized in that, it includes the feed layer containing feed structure, the coupling layer and radiating layer containing coupling aperture and coupled chamber that set gradually from the bottom up, feed layer uses the waveguide of E faces, the waveguide of E faces is coupled by aperture using T-shaped constant amplitude power splitter in the same direction with upper strata coupling layer, coupled chamber is set above the coupling aperture of coupling layer, and forms one point of four power splitter；Radiating layer is provided with the radiating slot array being made up of multiple radiating slot units, and the position of correspondence radiating slot unit sets ladder in coupled chamber.The utility model simple structure, with high bandwidth, low-loss characteristic, property ratio is in similar-type products, and performance is more superior.
Description
Technical field
The utility model is related to antenna technical field, more particularly to a kind of flat plate array antenna.
Background technology
With the fast development of antenna technology, comprehensive popularization of informationized society, in the year two thousand twenty and future, mobile communication skill
Art relatively marches toward the developing stage of the 5th third-generation mobile communication (5G).Its feature is that 0.1-1Gbps experiences speed, number 10Tbps/km2Stream
Metric density, million grades of Connection Densities, low-power consumption etc..And 5G networks are mainly high bandwidth for the basic demand of antenna technical field
And low-loss, and application aspect is then millimeter wave flat plate array (mmWave planar array), multiple-unit (massive
MIMO), beam forming (beam forming), beam scanning (beam steering), multi-beam (multi-beam) and active
Integrated phased array (phase control array).Wherein millimeter wave flat plate array as 5G antenna other applications basis,
Play vital effect.
Gap flat plate array antenna is widely used in modern radar and communication system.Wherein microstrip line gap
Flat plate array antenna is easy of integration with its, and the characteristic of easy processing and high performance-price ratio turns into one of most popular scheme.But it is in height
The performance of frequency range especially V-band and E-band is but very undesirable, and surface wave, the radiation of transmission line and matrix mode loss cause
Poor efficiency, height loss inferior position in the particularly evident of high band.In face of the high bandwidth low-loss at 5G networkings, microstrip line gap is put down
Plate array has been extremely difficult to require.Substrate integration wave-guide (SIW) structure can to a certain extent improve antenna efficiency, but its
Loss in matrix is still higher.Do not had a clear superiority in the application of large-scale array.Another emerging Gap guide technology
With its low-loss, do not require metal contact advantage (in high band in the absence of gap leaky wave phenomenon, make its design simulation data with
Example Test Data is closely) increasingly attract attention.But the periodicity needle construction of Gap waveguides is excessively tiny, in high frequency
Section requirement on machining accuracy is high, and the process-cycle is long big, it is difficult to meet the demand of volume production.
On the other hand, traditional air Waveguide slot radiating element flat plate array is with its low-loss, and efficient advantage is same
Sample is widely used.But the bandwidth of conventional air waveguide is not wide enough, it is more difficult to meet the demand of 5G high band high bandwidths,
The current universal relative bandwidth of product is 10%-15%, and return loss is also higher in its bandwidth, standing-wave ratio 2.0 or so,
And a part of product in order to reach 20% relative bandwidth, sacrifice return loss, standing-wave ratio is up to 2.6, and input energy is very big
A part is all reflected.Other conventional air waveguide processing mode there is also drawback：Gap leaky wave (metal contact requires very high).
A kind of silver-plated lamination of emerging multilayered metal film largely solves the problems, such as gap leaky wave, but processing cost is different
Chang Gao, is not appropriate for a large amount of productions.
The content of the invention
The purpose of this utility model is exactly a kind of simple structure provided to solve the deficiency of prior art, high band
Width, low-loss Slot-array antennas.
The utility model is to realize above-mentioned purpose using following technical solution：A kind of Slot-array antennas,
Characterized in that, it includes the feed layer containing feed structure, the coupling containing coupling aperture and coupled chamber that set gradually from the bottom up
Layer and radiating layer are closed, feed layer uses the waveguide of E faces, the waveguide of E faces to pass through aperture and upper strata using T-shaped constant amplitude power splitter in the same direction
Coupling layer is coupled, and coupled chamber is set above the coupling aperture of coupling layer, and form one point of four power splitter；Radiating layer be provided with by
The radiating slot array of multiple radiating slot unit compositions, the position of correspondence radiating slot unit sets rank in coupled chamber
Ladder, to meet in the case of high bandwidth, realizes low-loss.
Used as further illustrating for such scheme, the E faces waveguide of the feed layer uses H faces heartcut combination；
Waveguide corner uses inclined-plane corner cut, and by 4 grades of T-shaped constant amplitude power splitters in the same direction, feed layer end is using E faces cavity and coupling aperture
Match somebody with somebody.
Further, the coupling layer is connected by coupling aperture with feed layer, and coupled chamber surrounding is provided with two pairs of metals
Block, the rectangular step in coupled chamber is located at immediately below radiating slot unit, for being coupled with radiating slot.
Further, the ladder position rectangular step in coupled chamber, symmetrical centered on coupling aperture, for expanding bandwidth simultaneously
With radiating slot units match.
Further, radiating layer includes radiant panel and radiating enclosures, and radiating slot unit is arranged on radiant panel, each spoke
The spacing penetrated between slot element is 86% wavelength, and radiating enclosures are arranged on the top of radiating slot unit, for further suppression
Mutual coupling between gap processed, to suppress graing lobe.
The utility model is using the above-mentioned technical solution beneficial effect to be reached：
The utility model is used and uses E faces waveguide H faces heartcut mode in feed layer, gap leaky wave is reduced, to subtract
The small loss of feed layer；By adding the cavity body structure containing rectangular step between feed layer and radiating layer, improve
Impedance matching performance；Compared with existing antenna, it has bandwidth high, be lost it is low the characteristics of.
2nd, rectangular step of the present utility model with coupled chamber center into symmetrical structure, and positioned at radiating slot unit just under
Side, i.e., magnetic field most strong position in cavity, with radiating slot, radiating enclosures and free space form multistage matching, to realize simultaneously
High bandwidth and low-loss.
Brief description of the drawings
Fig. 1 is overall structure figure of the present utility model；
Fig. 2 is radiation layer structure diagram of the present utility model；
Fig. 3 is coupling layer structural representation of the present utility model；
Fig. 4 is feed layer structural representation of the present utility model.
Description of reference numerals：1st, feed layer 1-1, base plate 1-2, E face waveguide 1-21, E faces waveguide transmission layer upper edge
The lower tangent plane 1-3 of 1-22, E face waveguide transmission layer, T-shaped power splitter 1-4, E face cavity 2, coupling layer 2-1, coupling aperture 2-2, coupling
Close cavity 3, radiating layer 3-1, gap radiation unit 3-2, radiant panel 3-3, radiating enclosures 4, rectangular step 5, metal derby.
Specific embodiment
The technical program is explained in detail below in conjunction with specific embodiment.
As Figure 1-Figure 4, the utility model is a kind of Slot-array antennas, and it includes setting gradually from the bottom up
The feed layer 1,2-1 containing coupling aperture containing tangent plane 1-22 under feed structure, the coupling of coupled chamber 2-2 feed structure upper edges 1-21
Layer 2 and radiating layer 3 are closed, feed layer 1 is included as the base plate 1-1 and E face waveguide 1-2 corresponding with base plate of feed layer lower wall,
The waveguide of E faces uses H faces heartcut combination, forms E faces waveguide transmission layer upper and lower tangent plane 1-21,1-22, the contact of its metal
It is less demanding, can largely reduce gap leaky wave, and machining accuracy and cost are relatively low, and can be by machining or molding
Volume production, waveguide corner uses inclined-plane corner cut, with to transmitting discontinuous compensation.Waveguide 1-2 in E faces is using 4 grades of T-shaped constant amplitude work(in the same direction point
Device 1-3 is coupled by aperture with upper strata coupling layer 2, coupled chamber 2-2 is set above the coupling aperture 2-1 of coupling layer, and formed
One point of four power splitter；Radiating layer 3 is provided with the radiating slot array and 64 radial chambers being made up of 64 radiating slot unit 3-1
Body 3-2, the position of correspondence radiating slot unit sets rectangular step 4 in coupled chamber, to meet in the case of high bandwidth,
Realize low-loss.
Further, the coupling layer is connected by coupling aperture with feed layer, and coupled chamber surrounding is provided with two pairs of metals
Block 5 is used to suppress the generation of senior mould, reduces the mutual coupling between radiating slot unit, and the rectangular step in coupled chamber is located at radiation
Immediately below slot element, i.e., magnetic field most strong position in cavity, for being coupled with radiating slot unit.Rectangular step in coupled chamber
It is symmetrical centered on coupling aperture, for expand bandwidth and with radiating slot units match.Radiating layer 3 includes radiant panel 3-2 and spoke
Cavity 3-3 is penetrated, radiating slot unit 3-1 is arranged on radiant panel 3-2, the spacing between each radiating slot unit is 86% ripple
Long, radiating enclosures are arranged on the top of radiating slot unit, for mutual coupling between further suppression gap, to suppress graing lobe.
In the present embodiment, antenna be integrally divided into three parts by welding or bolt be attached, Part I be base plate with,
The waveguide transmission layer lower tangent plane integral machine processing of E faces is molded；Part II is E faces waveguide transmission layer upper edge, coupling aperture, coupling
Close cavity, rectangular step and two groups of metal derby integral machine processing or mold；Part III be radiant panel and radiating enclosures integrally
Change machining or mold.
Wall wide * sizes high are (a*b) 1mm*2.7mm wherein in rectangular waveguide, and coupling aperture * long sizes wide are 2mm*
0.87mm, coupled chamber inwall * long * wide size high are 5.91mm*4.45mm*0.87mm, and radiating slot unit * long sizes wide are
Unit spacing is 3.2mm, radiating enclosures inwall * long in two horizontal directions for 2mm*0.3mm, wherein radiating slot unit
* sizes high wide are 2.55mm*1.8mm*1.2mm.
8*8 flat plate array antenna overall dimensions data are as follows：(L*W*H) 29.6mm*29.6mm*9.62mm, impedance bandwidth
It is 70.4-87GHZ, relative bandwidth 21%, in the bandwidth, return loss is less than -19dB.And can by 5 degree of polarization rotations
To meet ETSI range7class2 requirements.
The technical program compared with prior art, high bandwidth and low-loss feelings can not be simultaneously met in prior art construction
Under condition, by transforming coupled chamber structure type, rectangular step is added wherein, to meet in the case of high bandwidth, realize
Low-loss；Rectangular step, into symmetrical structure, and is magnetic in cavity immediately below the radiating slot unit with coupled chamber center
Field most strong position, forms multistage ladder and couples with radiating slot array and radiating enclosures, to realize high bandwidth and low-loss simultaneously,
Performance is more superior.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of the utility model creation design is not departed from, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.
Claims (5)
1. a kind of Slot-array antennas, it is characterised in that it includes the feedback containing feed structure for setting gradually from the bottom up
Electric layer, coupling layer and radiating layer containing coupling aperture and coupled chamber, feed layer use the waveguide of E faces, and the waveguide of E faces is using T-shaped etc.
Width power splitter in the same direction is coupled by aperture with upper strata coupling layer, coupled chamber is set above the coupling aperture of coupling layer, and formed
One point of four power splitter；Radiating layer is provided with the radiating slot array being made up of multiple radiating slot units, right in coupled chamber
Answer the position of radiating slot unit that ladder is set.
2. Slot-array antennas according to claim 1, it is characterised in that the E faces waveguide of the feed layer uses H
Face heartcut combination；Waveguide corner uses inclined-plane corner cut, and by 4 grades of T-shaped constant amplitude power splitters in the same direction, feed layer end is adopted
Matched with coupling aperture with E faces cavity.
3. Slot-array antennas according to claim 1, it is characterised in that the coupling layer is by coupling aperture and feedback
Electric layer is connected, and coupled chamber surrounding is provided with two pairs of metal derbies, and the rectangular step in coupled chamber is being located at radiating slot unit just
Lower section, for being coupled with radiating slot.
4. Slot-array antennas according to claim 1, it is characterised in that the rectangular step in coupled chamber, with
It is symmetrical centered on coupling aperture, for expand bandwidth and with radiating slot units match.
5. Slot-array antennas according to claim 1, it is characterised in that radiating layer includes radiant panel and radial chamber
Body, radiating slot unit is arranged on radiant panel, and the spacing between each radiating slot unit is 86% wavelength, and radiating enclosures set
Put in the top of radiating slot unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488659.7U CN206301951U (en) | 2016-12-30 | 2016-12-30 | Slot-array antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488659.7U CN206301951U (en) | 2016-12-30 | 2016-12-30 | Slot-array antennas |
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| CN206301951U true CN206301951U (en) | 2017-07-04 |
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| CN201621488659.7U Active CN206301951U (en) | 2016-12-30 | 2016-12-30 | Slot-array antennas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711616A (en) * | 2016-12-30 | 2017-05-24 | 广东盛路通信科技股份有限公司 | Planar slot array antenna |
| CN107591610A (en) * | 2017-07-19 | 2018-01-16 | 电子科技大学 | A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna |
| CN109786980A (en) * | 2019-03-21 | 2019-05-21 | 南京软赫波誉电子科技有限公司 | A kind of wideband flat antenna of the Sidelobe without graing lobe |
| CN111585050A (en) * | 2020-05-18 | 2020-08-25 | 宁波大学 | Broadband flat array antenna |
-
2016
- 2016-12-30 CN CN201621488659.7U patent/CN206301951U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711616A (en) * | 2016-12-30 | 2017-05-24 | 广东盛路通信科技股份有限公司 | Planar slot array antenna |
| CN107591610A (en) * | 2017-07-19 | 2018-01-16 | 电子科技大学 | A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna |
| CN107591610B (en) * | 2017-07-19 | 2019-11-05 | 电子科技大学 | A kind of broadband high-isolation low-cross polarization dual-linear polarization antenna |
| CN109786980A (en) * | 2019-03-21 | 2019-05-21 | 南京软赫波誉电子科技有限公司 | A kind of wideband flat antenna of the Sidelobe without graing lobe |
| CN111585050A (en) * | 2020-05-18 | 2020-08-25 | 宁波大学 | Broadband flat array antenna |
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