CN205680787U - A kind of ultra broadband mobile communication antenna cover based on antenna filter aerial array - Google Patents
A kind of ultra broadband mobile communication antenna cover based on antenna filter aerial array Download PDFInfo
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Abstract
The utility model discloses a kind of ultra broadband mobile communication antenna cover based on antenna filter aerial array.Described antenna house is that the periodic frequency being mainly made up of multiple same period cellular construction arrays selects surface, each periodic unit is mainly by bilevel dielectric layer, metal slit layer composition between bilevel circular ring metal patch layer and two layer medium layer, electromagnetic field in space is beaten to described antenna house, after sequentially passing through three layer-selective filtering of upper metal layers, metal slit layer and lower metal layer, from the electromagnetic field of the lower metal layer required frequency range of output, and can the energy of significantly clutter reduction.This utility model is applicable to the design of ultra broadband mobile communication antenna cover, and pass band width is big, and in-band insertion loss is minimum and stable, and frequency selectivity can be good.In mobile communication, the field such as radar all has huge using value.
Description
Technical field
This utility model relate to a kind of antenna device, has especially related to a kind of based on antenna-wave filter-aerial array
(Antenna-Filter-Antenna) ultra broadband mobile communication antenna cover, can be used for ultra broadband (5G) mobile communication,
Background technology
At present, the demand for 5G mobile communication is extremely the most urgent in the world, the 5G network of European Union will at the year two thousand twenty～
Put into effect between 2025.Mobile operator Verizon wireless company of the U.S. announced, will start 5G net on probation from 2016
Network, 2017 in the commercialization comprehensively of U.S. part city in the future days.Ministry of Industry and Information of China vice-minister Chen Zhaoxiong represents that: 5G is
The Main way of Technology of New Generation Mobile Communications development, is the important component part of future new era information infrastructure.
Compared with 4G, the network promoting user further is not only experienced by 5G, the most also by satisfied following all things on earth interconnection
Application demand.5G has higher speed, broader bandwidth.Therefore, the hardware device of application actual to 5G proposes higher
This module of requirement, especially antenna house.For the bandwidth that 5G communication is the biggest, the passband more than 2GHz bandwidth to be met, and
And in order to not make distorted signals, need to meet the insertion loss in such broadband at least below 0.6dB.This be undoubtedly one new
Challenge.
The implementation of existing antenna house, is generally adopted by periodic frequency and selects surface texture.For this structure
Research, have gone through many years both at home and abroad.Common monolayer or double-level-metal frequency-selective surfaces structure can realize
The space filtering of arrowband, or the space filtering of the poor broad passband of selectivity.Here selectivity is poor to be referred in passband
Insertion loss unstable, insertion loss in passband is relatively big and the slowest to stopband of passband, it is impossible to guarantee stopband
Rejection.
Utility model content
For how improving the pass-band performance of antenna house, stopband characteristic and the selectivity of frequency, thus meet 5G and move
This problem of communicating requirement, it is proposed that a kind of based on antenna-wave filter-aerial array (Antenna-Filter-Antenna)
Ultra broadband mobile communication antenna cover, by the ingehious design of three-layer metal layer, the electromagnetic wave for space has selection highly
Permeability.This utility model, in the case of spatial electromagnetic ripple normal incidence, realizes in the range of the broad passband of 26.1～28.9GHz
Less than the insertion loss of 0.1dB, while meeting passband requirements, the stopband in the range of band outer 31.4～34.3GHz is pressed down
System is more than 20dB.And passband is fast to the decrease speed of stopband, has good frequency selectivity.
This utility model solves the technical scheme that its technical problem is used:
Described antenna house is that the periodic frequency being mainly made up of multiple same period cellular construction arrays selects surface, often
Individual periodic unit mainly by bilevel dielectric layer, between bilevel circular ring metal patch layer and two layer medium layer
Metal slit layer forms, and the electromagnetic field in space beats to described antenna house, sequentially pass through upper metal layers, metal slit layer and under
After three layer-selective filtering of layer metal level, from the electromagnetic field of the required frequency range of lower metal layer output, and can significantly suppress miscellaneous
The energy of ripple.The number of this utility model periodic unit structure can select between 20 × 20 to 40 × 40 according to practical use.
Described periodic unit include upper strata metal patch, top dielectric plate, metallic intermediate layer plate, layer dielectric plate and under
Layer metal patch, metallic intermediate layer plate is between top dielectric plate and layer dielectric plate, and upper strata metal patch is affixed on upper strata and is situated between
Scutum upper surface, lower metal paster is affixed on layer dielectric plate lower surface, upper strata metal patch and lower metal paster structure chi
Very little identical.
Described metallic intermediate layer plate is provided with metallic intermediate layer gap, and metallic intermediate layer gap includes square-loop slot element and position
Four zigzag gaps at center in square-loop slot element, four zigzag gaps are circumferentially spaced all with spiral center symmetric mode
Cloth, zigzag gap is outwards divided into inner segment gap, gap, stage casing and outer section of gap by metallic intermediate layer plate center, and inner segment stitches
Gap and outer section of gap each parallel to a metallic intermediate layer plate wherein limit, gap, stage casing be parallel to metallic intermediate layer plate another
Limit, the length in inner segment gap is more than the length in outer section of gap.
Symmetrical centre and the center of square-loop slot element that four described zigzag gaps are formed are respectively positioned on metallic intermediate layer plate
Center.
Described upper strata metal patch and lower metal paster are the circular ring metal paster being placed in dielectric-slab center.
The dielectric constant of described dielectric layer is 2.2, and dielectric loss angle tangent is 0.0009.
Described dielectric layer uses Rogers RT5880 sheet material, by designing the size and shape in metallic intermediate layer gap
Change the coupling between upper and lower circular ring metal layer so that spatial electromagnetic ripple is in the case of normal incidence, 26.1～28.9GHz
Free transmission range in insertion loss less than 0.1dB.
What this utility model had has the advantages that:
This utility model antenna cover structure, is suitable for traditional PCB technique and is processed realizing.
Zigzag gap in the middle of metal slit layer of the present utility model and upper and lower two identical annular pasters are antenna
Cover provides an insertion loss to stablize minimum and that bandwidth is the biggest passband, and electromagnetic wave is in the case of normal incidence, 26.1
～in the free transmission range of 28.9GHz, insertion loss is less than 0.1dB；In the free transmission range of 25.7～29.2GHz, insertion loss is little
In 0.3dB；
The square gap of this utility model intermetallic metal layer slot provides an Out-of-band rejection relatively big and scope for antenna house
Wider stopband.Electromagnetic wave is in the case of normal incidence, and in the stopband range of 31.4～34.3GHz, stopband suppression is more than
20dB。
This utility model supports two kinds of polarization of electromagnetic wave patterns of TE, TM simultaneously, the angle excursion of positive and negative 30 degree
Interior performance is highly stable.
This utility model has important using value in fields such as ultra broadband mobile communication and radars.
Accompanying drawing explanation
Fig. 1 is the antenna house tomograph of this utility model embodiment.
Fig. 2 is the tomograph of periodic unit structure in this utility model.
Fig. 3 is the front view of periodic unit structure in this utility model.
Fig. 4 is the topology view of intermediate layer intermediate plate.
Fig. 5 is the electromagnetic wave incident angle influence curve for the antenna house performance in this utility model.
Fig. 6 is the transfer curve of antenna house in this utility model.
In figure: 1, upper strata metal patch, 2, top dielectric plate, 3, metallic intermediate layer gap, 4, layer dielectric plate, 5, lower floor
Metal patch, 3a, zigzag gap, 3b, square-loop slot element.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, antenna house of the present utility model is for be mainly made up of multiple same period cellular construction arrays
Periodic frequency select surface, each periodic unit is mainly by bilevel dielectric layer, bilevel circular ring metal
Metal slit layer composition between patch layer and two layer medium layer, the electromagnetic field in space is beaten to described antenna house, is sequentially passed through
After three layer-selective filtering of upper metal layers, metal slit layer and lower metal layer, from the required frequency range of lower metal layer output
Electromagnetic field, and can the energy of significantly clutter reduction.
As shown in Figures 2 and 3, periodic unit include upper strata metal patch 1, top dielectric plate 2, metallic intermediate layer plate, under
Layer dielectric-slab 4 and lower metal paster 5, metallic intermediate layer plate is between top dielectric plate 2 and layer dielectric plate 4, and upper strata is golden
Belonging to paster 1 and be affixed on top dielectric plate 2 upper surface, lower metal paster 5 is affixed on layer dielectric plate 4 upper surface, upper strata metal patch 1
Being circular ring metal paster with lower metal paster 5, physical dimension is identical.
As shown in Figure 4, metallic intermediate layer plate is provided with metallic intermediate layer gap 3, metallic intermediate layer gap 3 side of including annulus
Gap 3b and four the zigzag gap 3a being positioned at square-loop slot element 3b center, four zigzag gap 3a are with spiral center symmetry side
Formula the most uniformly at intervals, zigzag gap 3a by metallic intermediate layer plate center be outwards divided into inner segment gap, gap, stage casing and
Outer section of gap, inner segment gap and outer section of gap are each parallel to a metallic intermediate layer plate wherein limit, and gap, stage casing is parallel to centre
Layer another limit of metallic plate, gap, stage casing is connected between inner segment gap and outer section of gap, gap, stage casing respectively with inner segment gap,
Outer section of gap is perpendicular, and the length in inner segment gap is more than the length in outer section of gap, the symmetrical centre that four zigzag gap 3a are formed
With the center that the center of square-loop slot element 3b is respectively positioned on metallic intermediate layer plate.
The operation principle of whole antenna house is as follows:
A the two-layer circular patch layer on () substrate can be respectively seen as transmitting and the reception antenna of outer layer, and itself is
It is the unit of two resonance, series resonant tank can be equivalent to respectively.
B metal slit layer that () is embedded between the substrate of both sides is originally as a bandpass structures.And we are by gap here
It is designed to resonant element, forms the filtering of a high-order together with metal patch.
C (), in order to make antenna house have preferably selective penetrated property, in metal slit layer, ingenious adds a Fang Huan
The gap of shape so that the transmission response of this structure has passband toward the precipitous characteristic of stopband.
This utility model embodiment, as a example by the antenna house being operated in 5G mobile communication frequency range, is specifically described various piece
The structural parameters of embodiment and each several part are for overall impact:
The frequency range that 5G mobile communication is the most most possibly used by the world is wider than at about 27.5GHz, the band of covering
2GHz, the Insertion Loss in band is the least the best for the effect of practical communication simultaneously.For this kind of actual application, traditional monolayer
Or double-deck antenna house made by Compact frequency selective surface structure has been difficult to meet demand.And the utility model proposes three
The Compact frequency selective surface structure of rank filtering not only meets bandwidth range, and the Insertion Loss in carrying has been accomplished less than 0.1dB, outside band
Suppression is big, and passband has precipitous characteristic toward stopband.
As it is shown in figure 1, embodiment uses 20 × 20 periodic units, the upper strata metal patch 1 of each periodic unit structure
It is external diameter 1.35mm, the metal ring of internal diameter 1.05mm with lower metal paster 5.Its size is decided by the frequency of intended pass-band
Rate.Individually increasing the external diameter of metal ring, the resonant frequency of passband can decrease, and the bandwidth of transmission passband reduces, in band
Rise and fall and reduce.This is because the external diameter individually increasing metal ring can make the electric size of upper and lower metal ring increase, cause humorous
Vibration frequency moves to the lower.And now the length in the coupling gap in the 3a of zigzag gap cannot provide enough stiffness of coupling, lead
The bandwidth causing passband reduces therewith.Individually increasing the external diameter of metal ring, the resonant frequency of passband can decrease, and transmission is logical
The bandwidth of band reduces, and pass band insertion loss increases.Wherein, the reason causing resonant frequency to move to the lower is still metal ring
Electricity size is increased.The reason that bandwidth reduces and insertion loss increases transmitting passband is caused then to be as round metal ring width
The reduction of degree, the coupling that upper and lower metal ring is provided reduces therewith, is not enough to provide a bigger bandwidth.Table 1 below is concrete
Elaborate the impact for passband effect of metal patch external diameter and internal diameter size.
Table 1 metal patch external diameter and internal diameter size are for the impact of passband effect
Top dielectric plate 2 and layer dielectric plate 4 use periodic unit thickness 0.7mm, the Rogers of square length and width 6.2mm
RT5880 sheet material, selecting the reason of this medium is that its spillage of material is less, can reduce material itself to a certain extent right
Impact in pass band insertion loss.Cost Problems in view of large-scale use, it is also possible to select spillage of material relatively small, be situated between
Other lower cost materials that electric constant is close.The Cycle Length of array also has a certain impact for the passband of structure, and the cycle is long
Spending the biggest then bandwidth the least, this coupling being also due between adjacent cells reduces therewith.Equally, the thickness increasing dielectric layer also can
Reduce stiffness of coupling thus reduce the bandwidth of structure.
The size of the zigzag gap 3a structure in metallic intermediate layer plate is identical.This layer is also the core of this structure design,
The length in gap can be with the shape of control structure transmission coefficient curve.Gap length crosses the excessive impact of fluctuating in conference causes band
The performance of structure, but the effect of regulation passband width can be played within the specific limits.Here the stage casing in zigzag gap and interior
The size that section is chosen is identical, for length 1.5mm, width 0.5mm.The a length of 0.8mm in outer section of gap, width is 0.5mm,
Less than the length in inner segment gap in length.The length and width in three sections of gaps of zigzag is the optimum after optimization and (ensures passband
It is inserted into being lost the most stably less than 0.1dB).If being further added by length or the width in these three sections of gaps, passband can be caused to insert
The fluctuation of loss, causes the passband between transmission pole to occur more than 0.1dB and is the most more lost, affects the performance of structure.
The gap length of square-loop slot element 3b is 5mm, and width is 0.3mm.Main Function is used to the transmission system for structure
Number curve increases a transmission zero so that passband to stopband has precipitous feature, and is had the advantage that stopband by it
Suppression amplitude increases and the selection performance of frequency increases.The width increasing gap can change the stopband of transmission coefficient so that >
20dB suppression stopband broadens in a certain degree.But, when gap width reaches 0.38mm when, the minimum suppression of stopband is deep
Degree will can not meet the suppression of 20dB.Table 2 below is specifically described the impact for stopband effect of the square-loop slot element width.
Table 2 square-loop slot element width is for the impact of stopband effect
Meanwhile, the incident angle change of electromagnetic wave affects the most greatly for the performance of antenna house.This structure considers
To meeting bigger passband as far as possible, stopband and stablize minimum insertion loss, property in the angle excursion of positive and negative 30 degree
Can be highly stable.Lower Fig. 5 illustrates the impact for antenna house performance of the electromagnetic wave incident angle, it can be seen that enclose in this model frequency
In, the change of angle is the least to the performance impact of antenna house, and especially band-pass behavior only has the least fluctuation.
The integrally-built transfer curve of embodiment is as shown in Figure 6, it is considered in the case of electromagnetic wave normal incidence,
In the free transmission range of 26.1～28.9GHz, insertion loss is less than 0.1dB；In the case of considering dielectric material loss, 0.1dB
Pass band insertion loss be also mention in the article delivered so far minimum, and bandwidth is not accomplished in this structure nearly yet
The width of 2.7GHz.In the free transmission range of 25.7～29.2GHz, insertion loss is less than 0.3dB；Meanwhile, the side of metal slit layer
Shape gap provides, for antenna house, the stopband that an Out-of-band rejection is relatively big and scope is wider.In the stopband range of 31.4～34.3GHz,
Stopband suppression is more than 20dB.Support two kinds of polarization modes of TE, TM simultaneously, can be highly stable at the angular variance of positive and negative 30 degree.
Therefore, in fields such as ultra broadband mobile communication and radars, there is important using value.
Thus, this utility model has prominent significant technique effect, it is achieved that near in the case of electromagnetic wave normal incidence
The pass-band loss of 2.7GHz bandwidth stably stably carries less than 0.3dB, 2.9GHz less than the pass-band loss of 0.1dB, 3.5GHz bandwidth
Wide stopband suppression is more than 20dB.Support two kinds of polarization modes of TE, TM simultaneously, can be the most steady at the angular variance of positive and negative 30 degree
Fixed, frequency selectivity can be good.
Claims (6)
1. a ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array, it is characterised in that: described antenna
Cover selects surface for the periodic frequency being mainly made up of multiple same period cellular construction arrays, each periodic unit mainly by
Bilevel dielectric layer, between bilevel circular ring metal patch layer and two layer medium layer metal slit layer composition,
Electromagnetic field in space is beaten to described antenna house, sequentially passes through three layers of upper metal layers, metal slit layer and lower metal layer
After selective filter, from the electromagnetic field of the lower metal layer required frequency range of output, and can the energy of significantly clutter reduction.
A kind of ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array the most according to claim 1,
It is characterized in that: described periodic unit includes upper strata metal patch (1), top dielectric plate (2), metallic intermediate layer plate, lower floor
Dielectric-slab (4) and lower metal paster (5), metallic intermediate layer plate is positioned between top dielectric plate (2) and layer dielectric plate (4),
Upper strata metal patch (1) is affixed on top dielectric plate (2) upper surface, and lower metal paster (5) is affixed on layer dielectric plate (4) following table
Face, upper strata metal patch (1) is identical with lower metal paster (5) physical dimension.
A kind of ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array the most according to claim 2,
It is characterized in that: described metallic intermediate layer plate is provided with metallic intermediate layer gap (3), metallic intermediate layer gap (3) include Fang Huan
Shape gap (3b) and be positioned at four zigzag gaps (3a) at square-loop slot element (3b) center, four zigzag gaps (3a) are with spiral shell
The most uniformly at intervals, zigzag gap (3a) is outwards divided into inner segment by metallic intermediate layer plate center to rotation centrosymmetry mode
Gap, gap, stage casing and outer section of gap, inner segment gap and outer section of gap are each parallel to metallic intermediate layer plate wherein a limit, stage casing
Gap is parallel to another limit of metallic intermediate layer plate, and the length in inner segment gap is more than the length in outer section of gap.
A kind of ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array the most according to claim 3,
It is characterized in that: symmetrical centre and the center of square-loop slot element (3b) that four described zigzag gaps (3a) are formed are respectively positioned on
The center of metallic intermediate layer plate.
A kind of ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array the most according to claim 1,
It is characterized in that: described upper strata metal patch (1) and lower metal paster (5) are the annular gold being placed in dielectric-slab center
Belong to paster.
A kind of ultra broadband mobile communication antenna cover based on antenna-wave filter-aerial array the most according to claim 1,
It is characterized in that: the dielectric constant of described dielectric layer is 2.2, dielectric loss angle tangent is 0.0009.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914462A (en) * | 2016-06-06 | 2016-08-31 | 浙江大学 | Ultra broadband mobile communication radome based on antenna-filter-antenna array |
| CN107834195A (en) * | 2017-12-05 | 2018-03-23 | 上海无线电设备研究所 | A kind of frequency-selective surfaces antenna house |
| CN110854543A (en) * | 2019-11-15 | 2020-02-28 | 电子科技大学 | Dual-frequency broadband wide-angle circularly polarized grid based on miniaturized unit |
| CN110889216A (en) * | 2019-11-20 | 2020-03-17 | 上海无线电设备研究所 | Adaptive rapid design method for curved surface frequency selection surface radome |
| CN115173076A (en) * | 2022-08-16 | 2022-10-11 | 重庆邮电大学 | Low-profile ultra-bandwidth filtering structure |
-
2016
- 2016-06-06 CN CN201620547373.5U patent/CN205680787U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914462A (en) * | 2016-06-06 | 2016-08-31 | 浙江大学 | Ultra broadband mobile communication radome based on antenna-filter-antenna array |
| CN105914462B (en) * | 2016-06-06 | 2019-02-22 | 浙江大学 | Based on antenna-filter-aerial array ultra wide band mobile communication antenna cover |
| CN107834195A (en) * | 2017-12-05 | 2018-03-23 | 上海无线电设备研究所 | A kind of frequency-selective surfaces antenna house |
| CN110854543A (en) * | 2019-11-15 | 2020-02-28 | 电子科技大学 | Dual-frequency broadband wide-angle circularly polarized grid based on miniaturized unit |
| CN110854543B (en) * | 2019-11-15 | 2021-03-30 | 电子科技大学 | Dual-frequency broadband wide-angle circularly polarized grid based on miniaturized unit |
| CN110889216A (en) * | 2019-11-20 | 2020-03-17 | 上海无线电设备研究所 | Adaptive rapid design method for curved surface frequency selection surface radome |
| CN110889216B (en) * | 2019-11-20 | 2023-11-14 | 上海无线电设备研究所 | Self-adaptive rapid design method for curved surface frequency selective surface radome |
| CN115173076A (en) * | 2022-08-16 | 2022-10-11 | 重庆邮电大学 | Low-profile ultra-bandwidth filtering structure |
| CN115173076B (en) * | 2022-08-16 | 2024-05-14 | 重庆邮电大学 | Low-profile ultra-bandwidth filtering structure |
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Granted publication date: 20161109 Effective date of abandoning: 20190222 |