CN209434389U - A kind of high-performance mobile communication antenna cover - Google Patents
A kind of high-performance mobile communication antenna cover Download PDFInfo
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- CN209434389U CN209434389U CN201822156015.3U CN201822156015U CN209434389U CN 209434389 U CN209434389 U CN 209434389U CN 201822156015 U CN201822156015 U CN 201822156015U CN 209434389 U CN209434389 U CN 209434389U
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Abstract
The utility model discloses a kind of high-performance mobile communication antenna covers.Antenna house is rearranged by periodic unit close structure, and entire antenna cover structure can be divided into dielectric layer and be affixed on being made of consumption layer, lossless metal layer for dielectric layer two sides.There is consumption layer to be affixed on dielectric layer upper surface, lossless metal layer is affixed on dielectric layer lower surface.The high-performance mobile communication antenna that the utility model is suitable for that antenna system spurious signal is inhibited to interfere is provide with meter, polarizer stability is splendid, pass band width is big and in-band insertion loss is small, the absorption band of high-absorbility is formed when forward entrance at two frequency multiplication of passband, realize the inhibiting effect to antenna system spurious signal, the reflection band of high inhibition is formed when negative sense incidence at frequency multiplication, to realize the shielding action to interference signal in external environment.It is worth in modern Commercial communication, radar and military and national defense field with huge applications.
Description
Technical field
The utility model relates to antenna technical fields can answer more particularly to a kind of high-performance mobile communication antenna cover
In terms of 5G communication and radar.
Background technique
It is higher and higher to the performance requirement of communication system with the rapid development of the communication technology.In conventional mobile communications system
Surface acoustic wave (Surface Acoustic Wave, SAW) filter and dielectric filter are spuious commonly used to carry out system in system
The inhibition of signal.But since the huge volume of dielectric filter and the design philosophys such as system high integration, portable are runed counter to, SAW filter
Wave device is with the raising of frequency, and performance runs down, therefore it can only preferably be applied to low-frequency range and communicate.Further, since
Bulk acoustic wave (Bulk Acoustic Wave, BAW) filter is insufficient to spurious signal rejection ability at frequency multiplication, can not meet and work as
The requirement of preceding mobile communication.Therefore, the inhibition of spurious signal at frequency multiplication how is improved, while guaranteeing the normal work of antenna system
As a major challenge in current communication networks design.
It is affected by environment that traditional antenna cover often only protects antenna and entire communication system to exempt from using dielectric material
Shell.
In recent years, the research on the super surface of electromagnetism causes the concern of numerous domestic and foreign scholars, also achieves numerous breakthroughs.And
Current research is more conceived to the stabilizations of transmission performance, is typically designed reflection-type stopband for spuious inhibition to realize,
But the type shielding case in a communications system in application, due to reflection characteristic, although inhibiting spurious signal to sky well
Between middle radiation, but spurious signal will be made to be reflected back communication system again and cause secondary radiation problem.More for spurious signal
Good suppressor mode is absorption consumption to be carried out to it, but absorption-type shielding case often will affect the working performance of antenna itself, this
So that the design of absorption-type antenna house becomes abnormal difficult.Therefore, design is a can be on the basis of guaranteeing antenna stabilization work
Realize that the antenna house for absorbing and inhibiting to spurious signal at working frequency range frequency multiplication is developed to pass weight for present mobile communication technology
It wants.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of high-performance mobile communication antenna cover,
There is the ingehious design of consumption layer and the lossless layer in bottom by top, realizes the efficient absorption to spurious signal at frequency multiplication, while to work
There is stable, efficient selective penetrated property as frequency band signals.The utility model can be realized to spurious signal at system frequency multiplication
Height inhibits, while improving communication system performance itself to a certain extent.
The utility model solves technical solution used by above-mentioned technical problem:
The antenna house is rearranged by least one periodic unit close structure, and each periodic unit structure is mainly by being situated between
Matter layer and be affixed on dielectric layer two sides by consumption layer and lossless metal layer form, the periodic unit structure includes that consumption layer is arranged at top
P1, dielectric layer D0With the lossless metal layer P of bottom2；Consumption layer P is arranged at top1It is affixed on dielectric layer D0Upper surface, the lossless metal patch P of bottom2
It is affixed on dielectric layer D0Lower surface.
Consumption layer P is arranged at the top1By a metal Fang Huan and two resistance R being welded on Fang HuanesComposition；Metal Fang Huanwei
In dielectric layer D0Geometric center at, wherein adjacent two sides middle opens up rectangular aperture to metal Fang Huan, and each rectangle is opened
One resistance R of welding arrangement at mouthfules, resistance ResConnect the metal side ring end of rectangular aperture two sides, the side length of metal Fang Huan
Size is less than dielectric layer D0Side length.The lossless metal patch P of bottom2By the square ring metal patch T for being located at periphery0Be located at
Intermediate " Jerusalem " saltire metal patch T1Composition, wherein " Jerusalem " saltire metal patch T1Positioned at Fang Huanjin
Belong to patch T0, be by four T-shaped units in a manner of central symmetry circumferentially uniformly at intervals；Square ring metal patch T0Side length ruler
It is very little to be equal to dielectric layer D0Side length.
The dielectric layer D0Using Rogers RT5880 plate, dielectric constant 2.2, dielectric loss angle tangent is
0.0009。
The frequency for being incident in the antenna house electromagnetic wave is 2GHz-9GHz.
When electromagnetic wave incident is to the antenna house in free space, selection can be generated to the electromagnetic wave of specific incident frequencies
Property, so that working frequency range signal normally penetrates: there is the signal of consumption layer for forward entrance to antenna house upper surface, it will in antenna
The absorption band of high-absorbility is formed at two frequency multiplication of working frequency range: the signal for being incident on the lossless layer in antenna house lower surface for negative sense will
The reflection band of high inhibition can be formed at frequency multiplication, to realize the inhibition to antenna system spurious signal.The forward entrance
Refer to that electromagnetic wave has consumption layer incident at the top of antenna house, negative sense incidence refers to that electromagnetic wave is incident from the lossless layer in antenna house bottom.
In specific implementation, the utility model top layer has consumption layer, only has to the spurious signal at antenna frequency multiplication very big
Consumption, and it is smaller for Antenna Operation effect of signals, realizing the normal work that ensure that antenna while absorption to spurious signal
Make.For the electromagnetic wave of forward entrance (it is incident to be covered with consumption layer from antenna), antenna house will make 3.2GHz-3.8GHz frequency range
Working signal is normal through loss is less than 0.2dB, and 6.5GHz -7.5GHz frequency range will will form the absorption band of high-absorbility, right
The frequency range electromagnetic wave is absorbed, and absorption efficiency is greater than 90%, prevents it from being transmitted by antenna house.For negative sense incidence
The electromagnetic wave of (incident from the lossless layer of antenna house), antenna house will make the positive normal open of the working signal of 3.2GHz-3.8GHz frequency range
It crosses, loss is less than 0.2dB, and 6.5GHz -7.5GHz frequency range will will form the one high reflection band inhibited, and inhibitory effect is in 20dB
More than, to realize shielding action of the antenna house to the segment signal.
The high-performance mobile communication antenna cover of the utility model can be applied to the modern communications such as 5G, radar and military communication
In.
The antenna house working principle of the utility model is as follows:
In a communications system, when antenna is in running order, in addition to can Radiation work frequency range outward useful signal
Outside, there is also spurious signals at the frequency multiplication of Antenna Operation frequency range, can bring and seriously affect to antenna system.Traditional antenna cover is logical
Normal design structure forms reflection-type stopband, plays the inhibiting effect to spurious signal.Although reflection-type stopband can be to spurious signal
Good inhibition is played, but spurious signal can be made to be reflected back antenna system again, and then it is secondary dry to bring electromagnetic pollution to be formed
It disturbs.The drawbacks of in order to overcome conventional reflective-type stopband to bring, the utility model use and carry out absorption suppression to spurious signal at frequency multiplication
System and working frequency range signal normal through the performance that communication system is improved with flowering structure design.
It is to have consumption layer with resistive element at the top of antenna house in the utility model, the well-designed of structure makes it in antenna
Assimilation effect is formed at the frequency multiplication of work, realizes that the absorption to spurious signal inhibits；And the bottom of antenna house is lossless layer structure,
On the one hand stopband is formed at frequency multiplication, has consumption layer to cooperatively form assimilation effect with top layer, on the other hand in Antenna Operation frequency range
Low-loss broad passband is formed, so that working signal is impregnable by antenna house, guarantees the normal work of antenna.
Consumption layer P is arranged at top1For mainly by a metal Fang Huan and two resistance R being welded on Fang HuanesComposition；Metal Fang Huan
There are two rectangular apertures at the geometric center of structural unit, and in its adjacent two sides middle；Two resistance ResWeldering
It is connected at the rectangular aperture of metal Fang Huan.Consider from equivalent circuit angle, the metal Fang Huan can be equivalent to inductance L0, and it is single
Gap between member and cellular construction can be equivalent to capacitor C0, along with the resistance R being welded on metal Fang Huanes, form RLC's
Series circuit.Fig. 5 illustrates the current distribution at Antenna Operation frequency range frequency multiplication, it can be found that under specific frequency, RLC series connection
Circuit forms resonance effect, heavy current is formed on Fang Huan, by resistance ResSo that spurious signal energy consumption, is realized to spuious letter
Number absorption inhibit；Fig. 6 illustrates the current distribution under operating frequency of antenna, it can be seen that current strength at this time is smaller, institute
Too big consumption will not be brought to Antenna Operation signal, the normal work of antenna ensure that.
The lossless metal patch P of bottom2For mainly by periphery side ring metal patch T0With intermediate " Jerusalem " saltire metal
Patch T1Composition.From the point of view of equivalent circuit angle, periphery side ring metal patch T0It can be equivalent to inductance L1, metal Fang Huanyu
The gap that road is spread between cold saltire frame metal patch is equivalent to capacitor C2, and Jerusalem saltire frame metal patch itself can be with
It is equivalent to inductance L2.Capacitor C2With inductance L2LC series circuit is formed, makes it that resonance occur at antenna frequency multiplication and forms stopband, with
Top layer has consumption layer cooperative achievement absorption band, and then absorbs spurious signal；And inductance L1With capacitor C2With inductance L2Form series electrical
Road forms LC parallel circuit, forms resonance in Antenna Operation frequency range, forms passband in working frequency range, realizes to Antenna Operation signal
Transparent effect, ensures the normal work of antenna, and the equivalent-circuit model of final the utility model is as shown in Figure 7.Wherein shown in Fig. 7
Z in equivalent circuit0It is the impedance in free space, Zh0It is the equivalent impedance of dielectric layer.
Antenna house in the utility model uses full symmetric design philosophy, realizes TE, TM mode of electromagnetic wave
Under dual polarization stability Design.
The high-performance mobile communication antenna that the utility model is suitable for inhibiting spurious signal, polarizer stability high is provide with meter,
Logical in-band insertion loss is small and stablizes, and Wide stop bands (the forward entrance formation reflection band, negative sense of high inhibition are formed at two frequency multiplication of passband
Incidence forms absorption band), polarizer stability is splendid.In the fields such as modern communications, radar and military and national defense, application value is huge.
The beneficial effects of the utility model are:
The utility model realizes the design of 5G communication system antenna shielding case, is suitable for inhibiting antenna system spurious signal dry
The high-performance mobile communication antenna disturbed is provide with meter, and polarizer stability is splendid, and pass band width is big and in-band insertion loss is small, and forward direction enters
The absorption band for forming high-absorbility when penetrating at two frequency multiplication of passband, realizes the inhibiting effect to antenna system spurious signal, negative sense
The reflection band of high inhibition is formed when incident at frequency multiplication, so that the inhibiting effect to interference signal in external environment is realized, for solution
Certainly the inhibition of spurious signal, the lossless reflection-type FSS antenna house of tradition bring secondary radiation and conventional suction in 5G antenna system
The problems such as body is larger to working signal loss provides a kind of feasible scheme.
The utility model antenna house has frequency selective absorber architectural characteristic, and final antenna house thickness is only 0.037 λ,
The far smaller than design requirement of 1/4 λ of conventional suction body, is greatly reduced the volume of antenna house, reduces the negative of antenna system
Weight, make it possible its in the third generation mobile communication system application.
In addition, the utility model use full symmetric design so that its electromagnetism dual polarization performance stablize, while support TE,
Two kinds of polarization modes of TM.
The utility model has high answer in modern communications, radar and the military communications such as antenna device miniaturization, 5G
With value.
For synthesis, the high-performance mobile that the utility model is suitable for inhibiting spurious signal, polarizer stability high communicates day
Irdome design, logical in-band insertion loss is small and stablizes, and the high Wide stop bands inhibited are formed at two frequency multiplication of passband, and (forward entrance is formed instead
Penetrate band, negative sense incidence forms absorption band), polarizer stability is splendid.Valence is applied in fields such as modern communications, radar and military and national defenses
It is worth huge.
Detailed description of the invention
Fig. 1 is the antenna house tomograph of the utility model embodiment；
Fig. 2 is the main view of the utility model cellular construction；
Fig. 3 is the top-level metallic topology view of the utility model cellular construction；
Fig. 4 is the underlying metal topology view of the utility model cellular construction；
Fig. 5 is the utility model top level structure current distribution view at 7GHz (at Antenna Operation frequency multiplication)；
Fig. 6 is the utility model cellular construction current distribution view in top-level metallic structure in 3.5GHz；
Fig. 7 is the equivalent-circuit model figure of the utility model antenna house；
Fig. 8 is top-level metallic Fang Huan to cellular construction edge interval StTo transmission performance influence curve when variation；
Fig. 9 is the antenna house of the utility model for the transmission performance curve under forward entrance TE, TM polarization mode；
Figure 10 is the antenna house of the utility model for transmission performance curve under reversed incidence TE, TM polarization mode；
The antenna house absorbance curves of the utility model when Figure 11 is electromagnetic wave forward entrance under TE polarization mode.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
It is each to be specifically described the utility model for being applied to 5G communication power frequency section antenna house for the utility model embodiment
Influence of the partial embodiment and each structural parameters for radome transmission performance:
The Rogers RT5880 plate that dielectric-slab uses in the utility model, periodic unit is having a size of 15.5mm.The plate
The characteristics of material is that its dielectric loss is very small, therefore influences on the insertion loss of passband smaller.But the price of the plate
It is relatively high, if the insertion loss requirement to passband is lower, also can choose in actual application and the material dielectric constant
Similar plate is processed to be designed, to reduce investment cost.
As depicted in figs. 1 and 2, there is consumption layer P at the top of antenna house1, dielectric layer D0With the lossless metal layer P of bottom2；Consumption is arranged at top
Layer P1It is affixed on dielectric layer D0Upper surface, the lossless metal patch P of bottom2It is affixed on dielectric layer D0Lower surface.
As shown in figure 3, consumption layer P is arranged at top1By a metal Fang Huan and two resistance R being welded on Fang HuanesComposition；Metal
Fang Huan is located at dielectric layer D0Geometric center at, wherein adjacent two sides middle opens up rectangular aperture to metal Fang Huan, each
One resistance R of welding arrangement at rectangular aperturees, resistance ResConnect the metal side ring end of rectangular aperture two sides, metal Fang Huan
Size dimension be less than dielectric layer D0Side length.
As shown in figure 4, the lossless metal patch P of bottom2By the square ring metal patch T for being located at periphery0Be located in the middle "
Spread cold in road " saltire metal patch T1Composition.Wherein " Jerusalem " saltire metal patch T1Positioned at square ring metal patch T0,
Be by four T-shaped units in a manner of central symmetry circumferentially uniformly at intervals；Square ring metal patch T0Positioned at the outer of cellular construction
Circle, square ring metal patch T0Size dimension be equal to dielectric layer D0Side length, i.e., square ring metal patch T0Outer edge and dielectric layer D0
Outer edge alignment, be the metal Fang Huan an of standard.
1 the utility model structure the size of each part of table
As shown in Figure 1, embodiment uses the periodic unit array of 20*20, the unit period is in the utility model
15.5mm, Each part size is as shown in table 1, can carry out corresponding size according to specific design object in practical applications
Selection.When consumption layer P is arranged at top1Metal side ring distance unit structure edge gap StOr the width W of metal Fang Huan0Reduce
When, absorption band can be mobile to low frequency, and this is mainly due to gap StReduce meeting so that equivalent capacitor C0With inductance L0Increase,
So that capacitor C0With inductance L0The series resonance frequency of formation becomes smaller, if same side ring width W0Reduce, inductance can be made
L0Increase, so that resonance frequency shifts to low frequency.As the lossless layer P in bottom2Peripheral metal side ring width W1When reduction, passband
Will be mobile to low frequency, this is mainly due to width W1Reduction will make equivalent inductance L1Become larger, so that itself and capacitor C2
With inductance L2The transmission pole that is controlled of LC parallel circuit of series circuit composition become smaller, so passband is moved to low frequency direction
It is dynamic.Top layer side's ring metal patch has been described in detail to the gap S at structural unit edge in Fig. 8tVariation is to antenna in the utility model
The influence of cover transmission performance.
The asymmetric arrangement that top layer has two resistance in consumption layer is the design innovation of the utility model.Firstly, the electricity of top layer
Hinder ResIt is distributed in the midpoint at the two neighboring edge of top-level metallic side's ring, due to the presence of inductance, it will destroy original metal side
The metallic integrity of ring, when four edges whole loading resistor, it will so that the perception of metal Fang Huan is very poor, so that absorption band is not
It is able to satisfy demand；If simultaneously only in a side loading resistor, and structure can be made not have symmetry, TE, TM will be destroyed
Dual polarization stability.By a large amount of simulating, verifyings and theory deduction, asymmetrical resistor loaded mode is optimal design scheme.
For working frequency range signal almost all-transparent effect, and spurious signal at forward entrance frequency multiplication is absorbed, is reversed
External environmental interference signal reflex inhibition is the function innovation of the utility model at incident frequency multiplication.Top layer has consumption layer only to exist
It works at the frequency multiplication of Antenna Operation frequency range, the absorption to spurious signal is realized, without making working signal decay；For the external world
The interference signal of environment, antenna house will make its reflection, cannot enter antenna system by antenna house, to better assure that
The steady operation of antenna system.When Fig. 9 and 10 specifically illustrates electromagnetic wave forward and reverse incidence, the laser propagation effect of antenna house.
Transfer curve of the present embodiment in electromagnetic wave forward direction vertical incidence is as shown in figure 9, in 3.05GHz-
3.99GHz band limits is less than the requirement of 5G communication insertion loss 0.8dB, the insertion in 3.4GHz -3.6GHz frequency range
Loss is lower than 0.15dB；In addition, this example has good inhibiting effect to the spurious signal of Antenna Operation frequency range,
The reflection of 6.5GHz -7.5GHz frequency range is less than -10.4dB, transmits less than -13.2dB, as shown in figure 11, its absorption of the frequency range at this time
Efficiency is greater than 90%, and in the absorptivity of working frequency range less than 2%.Meanwhile it can be found that biography under two kinds of polarization modes of TE, TM
Defeated effect fits like a glove, and meets 5G communication antenna cover design requirement well.
As shown in Figure 10, when describing electromagnetic wave and being reversely incident to antenna house, the influence to radome transmission performance.?
3.07GHz -4.05GHz band limits is less than the requirement of 5G communication insertion loss 0.8dB, in 3.4GHz -3.6GHz frequency range
Interior insertion loss is lower than 0.19dB；In addition, this example has good inhibiting effect to the spurious signal of Antenna Operation frequency range,
- 0.48dB is reflected greater than in 6.5GHz -7.5GHz frequency range, the electromagnetic wave of frequency range incidence is all reflected substantially, is covered well
The band limits of 5G communication system spurious signal is covered, so as to avoid influence of the interference signal to antenna system of external environment,
Realize antenna system high stability.
Therefore, the utility model realizes the low-loss of working signal in 5G communication, forward entrance at working signal frequency multiplication
The quite stable height of the reflection suppression and dual polarization performance of the external environmental interference signal of the absorption of spurious signal, reversed incidence
The design of performance antenna shielding case.
Claims (5)
1. a kind of high-performance mobile communication antenna cover, it is characterised in that: the antenna house is by periodic unit close structure arrangement group
At the periodic unit structure includes that consumption layer P is arranged at top1, dielectric layer D0With the lossless metal layer P of bottom2；Consumption layer P is arranged at top1Patch
In dielectric layer D0Upper surface, the lossless metal patch P of bottom2It is affixed on dielectric layer D0Lower surface；Consumption layer P is arranged at the top1By a metal
Fang Huan and two resistance R being welded on Fang HuanesComposition；Metal Fang Huan is located at dielectric layer D0Geometric center at, metal Fang Huan
In adjacent two sides middle open up rectangular aperture, one resistance R of welding arrangement at each rectangular aperturees, resistance ResEven
The metal side ring end of rectangular aperture two sides is connect, the size dimension of metal Fang Huan is less than dielectric layer D0Side length.
2. a kind of high-performance mobile communication antenna cover according to claim 1, it is characterised in that:
The lossless metal patch P of bottom2By the square ring metal patch T for being located at periphery0Be located in the middle " Jerusalem " shape ten
Word metal patch T1Composition, wherein " Jerusalem " saltire metal patch T1It is by four positioned at the center of periodic unit structure
T-shaped unit in a manner of central symmetry circumferentially uniformly at intervals；Square ring metal patch T0Size dimension be equal to dielectric layer D0Side
It is long.
3. a kind of high-performance mobile communication antenna cover according to claim 1, it is characterised in that: the dielectric layer D0It adopts
With Rogers RT5880 plate, dielectric constant 2.2, dielectric loss angle tangent 0.0009.
4. a kind of high-performance mobile communication antenna cover according to claim 1, it is characterised in that: described being incident in is described
The frequency of antenna house electromagnetic wave is 2GHz-9GHz.
5. a kind of high-performance mobile communication antenna cover according to claim 1, it is characterised in that: when electromagnetism in free space
When wave is incident on the antenna house, antenna house generates selectivity to the electromagnetic wave of incident frequencies, so that working frequency range signal is normal
Through.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822156015.3U CN209434389U (en) | 2018-12-21 | 2018-12-21 | A kind of high-performance mobile communication antenna cover |
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| CN201822156015.3U CN209434389U (en) | 2018-12-21 | 2018-12-21 | A kind of high-performance mobile communication antenna cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509978A (en) * | 2018-12-21 | 2019-03-22 | 海宁利伊电子科技有限公司 | High-performance mobile communication antenna cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509978A (en) * | 2018-12-21 | 2019-03-22 | 海宁利伊电子科技有限公司 | High-performance mobile communication antenna cover |
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