CN109449593A - A kind of broad passband antenna house and its application - Google Patents
A kind of broad passband antenna house and its application Download PDFInfo
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- CN109449593A CN109449593A CN201811478759.5A CN201811478759A CN109449593A CN 109449593 A CN109449593 A CN 109449593A CN 201811478759 A CN201811478759 A CN 201811478759A CN 109449593 A CN109449593 A CN 109449593A
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- layer
- foam structure
- structure layer
- antenna house
- exterior skin
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
- H01Q1/424—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material comprising a layer of expanded material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
Abstract
The present invention provides a kind of broad passband antenna house and its applications, belong to antenna house technical field.The antenna house includes the first exterior skin layer set gradually, the first foam structure layer, first frequency selection layer, the second foam structure layer, second frequency selection layer, third foam structure layer and the second exterior skin layer.First frequency selection layer and second frequency selection layer are made of the periodic metal pattern on medium substrate and the surface for being attached to medium substrate.The broad passband antenna cover structure is simple, and thickness is thin, and transmission loss is small, and passband is wide, Out-of-band rejection is good, has both ultra-wide stopband and the insensitive feature of polarization direction.In addition, the antenna house efficient wave transparent in passband, and to passband outside electromagnetic wave can be carried out effective inhibition so that it is with preferable anti-interference.It is used as the antenna house of the antenna system of radar, base station communication or aircraft, can effectively reduce external electromagnetic wave to the interference damage of antenna system and its place equipment.
Description
Technical field
The invention belongs to antenna house technical fields, and in particular to a kind of broad passband antenna house and its application.
Background technique
Antenna house is a kind of widely used material, can protective cover internal antenna system from wind and rain, ice and snow, dust and too
The erosion of sun radiation etc., is that antenna system works under a relatively stable environment, slows down the aging of antenna, enhance system
Stability prolongs its service life.On the other hand in the demands such as military affairs, the transmission of electromagnetic wave can be controlled, so that itself is logical
The enough efficient transmission of wave energy in news frequency section, and the signals such as extraneous detection, interference are depleted or are reflected, and protect to greatest extent
Antenna system.
In radar and communication antenna system, due to frequency-selective surfaces and its antenna cover system to antenna protection and
The steady operation etc. for maintaining equipment etc. whole plays particularly important effect.It polarizes insensitive and has currently, need to design
Compared with broad passband and Wide stop bands antenna house.
Summary of the invention
An object of the present invention includes providing a kind of broad passband antenna house, and the broad passband antenna cover structure is simple, thickness
Thin, transmission loss is small, and passband is wide, Out-of-band rejection is good, has both ultra-wide stopband and the insensitive feature of polarization direction.In addition,
The antenna house efficient wave transparent in passband, and to passband outside electromagnetic wave can be carried out effective inhibition so that its have it is preferable
Anti-interference.
The second object of the present invention includes providing a kind of application of above-mentioned broad passband antenna house, such as can be used as thunder
It reaches, the antenna house of the antenna system of base station communication or aircraft, can effectively reduce external electromagnetic wave to antenna system and its place
The interference damage of equipment.
The present invention solves its technical problem and adopts the following technical solutions to realize:
The embodiment of the present invention proposes a kind of broad passband antenna house comprising the first exterior skin layer, the first foam structure layer,
First frequency selects layer, the second foam structure layer, second frequency selection layer, third foam structure layer and the second exterior skin layer.
First foam structure layer is set to the surface of the side of the first exterior skin layer；First frequency selection layer is set to first
The surface of the side far from the first exterior skin layer of foam structure layer；Second foam structure layer is set to first frequency selection layer
The surface of side far from the first foam structure layer；Second frequency selection layer is set to separate first frequency of the second foam structure layer
Rate selects the surface of the side of layer；Third foam structure layer is set to separate second foam structure layer of second frequency selection layer
The surface of side；Second exterior skin layer is set to the surface of the side of the separate second frequency selection layer of third foam structure layer.
First frequency selects layer and second frequency selection layer by medium substrate and the surface for being attached to medium substrate
Periodic metal pattern composition.
The invention also provides a kind of applications of above-mentioned broad passband antenna house, such as can be used as radar, base station communication
Or the antenna house of the antenna system of aircraft.
Broad passband antenna house and its beneficial effect of application include: in the embodiment of the present invention
The broad passband antenna cover structure that present pre-ferred embodiments provide is simple, and thickness is thin, and transmission loss is small, passband is wide,
Out-of-band rejection is good, has both ultra-wide stopband and the insensitive feature of polarization direction.In addition, the antenna house is efficiently saturating in passband
Wave, and to passband outside electromagnetic wave can be carried out effective inhibition so that it is with preferable anti-interference.Be used as radar,
The antenna house of the antenna system of base station communication or aircraft can effectively reduce external electromagnetic wave to antenna system and its place equipment
Interference damage.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the cellular construction for the broad passband antenna house that the embodiment of the present application 1 provides；
The structural schematic diagram of metal unit structure in the broad passband antenna house that Fig. 2 provides for the embodiment of the present application 1；
The structural schematic diagram of metal pattern periodic arrangement in the broad passband antenna house that Fig. 3 provides for the embodiment of the present application 1；
Fig. 4 is the simulation curve of the resulting broad passband antenna house of the embodiment of the present application 1；
Fig. 5 is the TE polarized wave transmission coefficient of the resulting broad passband antenna house of embodiment 1；
Fig. 6 is the TM polarized wave transmission coefficient of the resulting broad passband antenna house of embodiment 1.
Icon: 10- broad passband antenna house；11- the first exterior skin layer；The first foam structure layer of 12-；The choosing of 13- first frequency
Select layer；The second foam structure layer of 14-；15- second frequency selects layer；16- third foam structure layer；17- the second exterior skin layer；
19- metal pattern；191- metal unit structure；1911- metal mesh；1912- becket.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term " on ", "lower", "inner", "outside"
Set relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation or position usually put
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term
" first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In addition, the terms such as term " vertical " are not offered as requiring component absolute upright, but can be slightly tilted.As " hung down
Directly " only refer to that its direction is more vertical with respect to for "horizontal", be not indicate the structure have to it is completely vertical, but can
To be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
It is specifically described below.
The broad passband antenna house that the present embodiment is related to includes the first exterior skin layer, the first foam structure layer, first frequency choosing
Select layer, the second foam structure layer, second frequency selection layer, third foam structure layer and the second exterior skin layer.
Wherein, the first foam structure layer is set to the surface of the side of the first exterior skin layer, and first frequency selects layer setting
In the surface of the side far from the first exterior skin layer of the first foam structure layer, the second foam structure layer is set to first frequency choosing
The surface of the side far from the first foam structure layer of layer is selected, second frequency selection layer is set to the separate of the second foam structure layer
First frequency selects the surface of the side of layer, and third foam structure layer is set to the separate second foam knot of second frequency selection layer
The surface of the side of structure layer, the second exterior skin layer are set to the side of the separate second frequency selection layer of third foam structure layer
Surface.
Optionally, it can be pasted by glue film, prepreg or resin between above layers.Entire broad passband antenna house
Moulding process vacuum flexible bag moulding or autoclave molding can be used.It is worth noting that glue film involved in the application, preimpregnation
The substances such as material and resin and moulding process can refer to state of the art, and this will not be repeated here.
In the application, first frequency selection layer and second frequency selection layer by medium substrate and are attached to medium substrate
Surface periodic metal pattern composition.Metal pattern can be etched in the surface of medium substrate.
In some embodiments, medium substrate for example may include Kapton or epoxy glass fiber plate (FR4).
The thickness of medium substrate can be 0.02-0.1mm, such as 0.02mm, 0.05mm, 0.08mm or 0.1mm etc..
Metal pattern can be set in metal mesh by metal mesh and metal ring at, wherein becket and becket
Center and the center of metal mesh are overlapped.The setting relationship of becket and metal mesh can refer to concentric circles setting relationship, it is possible to understand that
At becket corresponds to the inner circle position of concentric circles, and metal mesh corresponds to the outer circle position of concentric circles.
In some preferable embodiments, metal mesh and becket is square namely metal mesh and becket it is equal
For 90 ° of rotational symmetry structures.
In other preferable embodiments, metal mesh and becket are in regular hexagon namely metal mesh and metal
Ring is 30 ° of rotational symmetry structures.
When metal mesh and square becket, the side length of metal mesh can be 9-9.6mm, as 9mm, 9.1mm,
9.2mm, 9.3mm, 9.4mm, 9.5mm or 9.6mm etc..The line width of becket can be 2.5-2.8mm, as 2.5mm, 2.6mm,
2.7mm or 2.8mm etc..The internal diameter of becket can be 2.8-3.2mm, such as 2.8mm, 2.9mm, 3.0mm, 3.1mm or 3.2mm
Deng.
It is worth noting that metal pattern periodic arrangement refers to that metal pattern includes multiple metal unit knots in the application
Structure includes 1 metal mesh and 1 becket in each metal unit structure.Multiple metal unit structures are in planar array, namely
4 sides of the metal mesh in each metal unit structure are correspondingly connected with the metal mesh in another metal unit structure, and
Correspond to each other the side length alignment of 2 metal meshes of connection.In each metal unit structure, becket is correspondingly arranged in metal mesh
It is interior.
The inner wall of metal mesh and the outer wall of becket in some embodiments, same period (same metal unit structure)
Between gap can be 0.2-0.3mm, such as 0.2mm, 0.25mm or 0.3mm etc..In the application, the thickness of becket can be with
For 0.018-0.035mm, such as 0.018mm, 0.02mm, 0.025mm, 0.03mm or 0.035mm.Correspondingly, the thickness of metal mesh
Degree or 0.018-0.035mm, such as 0.018mm, 0.02mm, 0.025mm, 0.03mm or 0.035mm.Preferably, golden
The thickness for belonging to ring is equal with the thickness of metal mesh, can be 0.02mm.
Optionally, in the application, metal mesh and becket can be made by metallic copper.
Preferably, the conductivity of metal can be 3.56 × 107s/m-5.6×107S/m, such as 3.56 × 107s/m、4×
107s/m、5×107S/m or 5.6 × 107S/m etc..
Inventors have found that it is good to select layer and second frequency to select layer that antenna house can be made to have by setting first frequency
Spatial electromagnetic wave control characteristic, reason may due to above-mentioned first frequency select layer and second frequency selection layer to electromagnetism
The transmission and reflection of wave have good selectivity, and the electromagnetic wave in its passband can be allowed to show all-pass characteristic, in addition for
Total reflection characteristic is presented in electromagnetic wave in stopband.
Further, becket is arranged to Fang Huan, preferable polarizer stability can be made it have and incidence angle is stablized
Property.In the metal unit structure of metal mesh and square ring composition, the presence of becket can reduce the transmission coefficient of high frequency, enhancing
Out-of-band rejection performance.Gap between becket and metal mesh on the outside of it is equivalent to capacitor on circuit, and size can be to humorous
Vibration frequency and bandwidth are finely adjusted.By the way that becket and metal mesh are adjusted in size range provided by the present application, energy
The capacitor and resistance in equivalent circuit are significantly affected, and then frequency and bandwidth are adjusted.
In the application, the first exterior skin layer and the second exterior skin layer for example can be by quartz fiber cloths and resin-bonded solidification
Molding, wherein resin includes vinylite or cyanate ester resin；In addition it is also possible to by lower dielectric materials are lost, such as
It adds the hollow glass microballoon that mass fraction is 2% in resin to be made, so that antenna house is more preferable with interior wave transparent performance.
In some embodiments, the dielectric constant of the material of the first exterior skin layer and the second exterior skin layer all can be
2.8-3.2, such as 2.8 (1-j0.02), 3.1 (1-j0.02) or 3.2 (1-j0.02).Certainly, outside the first exterior skin layer and second
The dielectric constant of skinning layer can also be freely combined in the range of 2.8-3.2 (1-j0.02).Lower real part of permittivity and
Lower loss helps to promote the wave transparent performance of antenna house.
The thickness of first exterior skin layer and the second exterior skin layer all can be 1.4-1.6mm, such as 1.4mm, 1.5mm or
1.6mm.Certainly, the thickness of the first exterior skin layer and the second exterior skin layer can also be freely combined within the scope of 1.4-1.6mm.
In some embodiments, the material of the first foam structure layer, the second foam structure layer and third foam structure layer
Material may each comprise PVC foam or PMI foam, can also use aramid fiber paper honeycomb.Foam structure layer is mainly used for the first frequency of control
Rate selects the spatial position of layer and second frequency selection layer, provides the thickness of certain physical strength and the entire antenna house of control
Intensity.
The dielectric constant of the material of first foam structure layer, the second foam structure layer and third foam structure layer can be with
For 1.12-1.2, such as 1.12 (1-j0.002), 1.18 (1-j0.002) or 1.2 (1-j0.002).Certainly, the first foaming structure
The dielectric constant of layer, the second foam structure layer and third foam structure layer can also be in the range of 1.12-1.2 (1-j0.002)
Interior independent assortment.The lower dielectric and loss are conducive to further increase the performance of antenna house.
In this application, the thickness of the first foam structure layer and third foam structure layer all can be 6.2-6.8mm, second
The thickness of foam structure layer can be 5.8-6.2mm.In some preferred embodiments, the first foam structure layer and third are steeped
The thickness of foam structure sheaf is 6.5mm, and the thickness of the second foam structure layer can be 6mm.
It is worth noting that in the application, the thickness of each layer structure of broad passband antenna house, becket and metal mesh
Size is not limited to above range, and in actual production, size can be adjusted as needed.
Hold, broad passband antenna house provided herein is symmetric in wall thickness direction, cover wall institute planar
In rotational symmetry, so that first frequency selection layer and second frequency selection layer have preferable bandwidth stability and incidence angle steady
It is qualitative.Layer is selected using two layers of frequency, whole is in multiple symmetrical structure, and compact overall structure is easy to process.Frequency selects layer tool
There is wider pass band width, be capable of providing effective communication bandwidth, and the Out-of-band rejection effect outside passband is good.The antenna house is logical
Insertion Loss in band is small, and the bandwidth less than 0.6dB is more than 1GHz, and flat characteristic and steep drop characteristic are good.
In addition, present invention also provides a kind of applications of above-mentioned broad passband antenna house, for example, radar, base can be used as
Stand communication or aircraft antenna system antenna house, can effectively reduce external electromagnetic wave to antenna system and its place equipment
Interference damage.
Embodiment 1
The present embodiment provides a kind of broad passband antenna houses 10, please with reference to Fig. 1 to Fig. 3, the broad passband antenna house 10 packet
Include the first exterior skin layer 11, the first foam structure layer 12, first frequency selection layer 13, the second foam structure layer 14, second frequency
Select layer 15, third foam structure layer 16 and the second exterior skin layer 17.It is pasted between above layers by vinylite, it is whole
The moulding process of a broad passband antenna house 10 uses vacuum flexible bag moulding.
Wherein, the first foam structure layer 12 is set to the surface of the side of the first exterior skin layer 11, and first frequency selects layer
13 are set to the surface of the side far from the first exterior skin layer 11 of the first foam structure layer 12, the setting of the second foam structure layer 14
In the surface of the side far from the first foam structure layer 12 of first frequency selection layer 13, second frequency selection layer 15 is set to the
The surface of the side of the separate first frequency selection layer 13 of two foam structure layers 14, third foam structure layer 16 are set to the second frequency
Rate selects the surface of the side far from the second foam structure layer 14 of layer 15, and the second exterior skin layer 17 is set to third foaming structure
The surface of the side of the separate second frequency selection layer 15 of layer 16.
First exterior skin layer 11 is solidified with the second exterior skin layer 17 by multilayer quartz fiber cloth and cyanate ester resin are Nian Jie
It is made.The dielectric constant of the material of first exterior skin layer 11 and the second exterior skin layer 17 is 3.0 (1-j0.02), is covered outside first
The thickness of cortex 11 and the second exterior skin layer 17 is 1.5mm.
The material of first foam structure layer 12, the second foam structure layer 14 and third foam structure layer 16 is PVC bubble
Foam.The dielectric constant of first foam structure layer 12, the second foam structure layer 14 and third foam structure layer 16 is 1.18 (1-
j0.002).The thickness of first foam structure layer 12 and third foam structure layer 16 is 6.5mm, the second foam structure layer 14
Thickness can be 6mm.
First frequency selection layer 13 and second frequency selection layer 15 by medium substrate (not shown) and are attached to medium
The periodic metal pattern 19 on the surface of substrate forms.Metal pattern 19 is etched in the table of medium substrate (Kapton)
Face.
Please with reference to Fig. 2 and Fig. 3, metal pattern 19 is by 1912 shape of square metal mesh 1911 and becket
At becket 1912 is set in metal mesh 1911 and the center of becket 1912 and the center of metal mesh 1911 are overlapped.Metal
Net 1911 and becket 1912 are 5.6 × 10 by conductivity7The metallic copper of s/m is made.The side length of metal mesh 1911 is (in Fig. 2
Indicated with " P ") it is 9.3mm, the line width (being indicated in Fig. 2 with " W ") of becket 1912 is 2.65mm, the internal diameter of becket 1912
(being indicated in Fig. 2 with " L ") is 3.0mm.
19 periodic arrangement of metal pattern refers to that metal pattern 19 includes multiple metal unit structures 191, each metal list
It include 1 metal mesh 1911 and 1 becket 1912 in meta structure 191.Metal mesh 1911 in each metal unit structure 191
4 sides be correspondingly connected with the metal mesh 1911 in another metal unit structure 191, and correspond to each other 2 gold of connection
Belong to the side length alignment of net 1911.In each metal unit structure 191, becket 1912 is correspondingly arranged in metal mesh 1911.Together
Gap (being indicated in Fig. 2 with " S ") in one period between the inner wall of metal mesh 1911 and the outer wall of becket 1912 is 0.25mm.
The thickness of above-mentioned becket 1912 and metal mesh 1911 is 0.02mm, medium substrate with a thickness of 0.03mm.
Embodiment 2
The present embodiment the difference from embodiment 1 is that: between each layer of broad passband antenna house by prepreg paste, entirely
The moulding process of broad passband antenna house uses autoclave molding.
First exterior skin layer and the second exterior skin layer are formed by multilayer quartz fiber cloth and vinylite adhesive solidification
And it obtains.The dielectric constant of the material of first exterior skin layer and the second exterior skin layer is 3.1 (1-j0.02), the first exterior skin layer
Thickness with the second exterior skin layer is 1.4mm.
The material of first foam structure layer, the second foam structure layer and third foam structure layer is aramid fiber paper honeycomb.
The dielectric constant of first foam structure layer, the second foam structure layer and third foam structure layer is 1.1 (1-j0.002).The
The thickness of one foam structure layer and third foam structure layer is 6.8mm, and the thickness of the second foam structure layer can be 6.2mm.
Metal mesh and becket are 5.6 × 10 by conductivity7The metallic copper of s/m is made.The side length of metal mesh is 9mm,
The line width of becket is 2.5mm, and the internal diameter of becket is 2.8mm.The outer wall of the inner wall of metal mesh and becket in same period
Between gap be 0.24mm.The thickness of becket and metal mesh is 0.018mm, medium substrate with a thickness of 0.02mm.
Embodiment 3
The present embodiment the difference from embodiment 1 is that: pasted between each layer of broad passband antenna house by resin, resin is
It is doped with the vinylite for the hollow glass microballoon that mass fraction is 2%, the moulding process of entire broad passband antenna house uses
Autoclave molding.
First exterior skin layer and the second exterior skin layer are made by quartz fiber cloth and vinylite.First exterior skin layer
Dielectric constant with the material of the second exterior skin layer is 3.2 (1-j0.02), the thickness of the first exterior skin layer and the second exterior skin layer
Degree is 1.6mm.
The material of first foam structure layer, the second foam structure layer and third foam structure layer is PMI foam.First
The dielectric constant of foam structure layer, the second foam structure layer and third foam structure layer is 1.16 (1-j0.002).First
The thickness of foam structure layer and third foam structure layer is 6.2mm, and the thickness of the second foam structure layer can be 5.8mm.
Metal pattern is etched in the surface of epoxy glass fiber plate (FR4).Metal mesh and becket are 3.6 by conductivity
×107The metallic aluminium of s/m is made.The side length of metal mesh is 9.6mm, and the line width of becket is 2.8mm, and the internal diameter of becket is
3.2mm.Gap in same period between the inner wall of metal mesh and the outer wall of becket is 0.26mm.Becket and metal mesh
Thickness is 0.022mm, medium substrate with a thickness of 0.04mm.
Embodiment 4
The present embodiment the difference from embodiment 1 is that: metal mesh and becket are in regular hexagon.Each metal unit knot
6 sides of the metal mesh in structure are correspondingly connected with the metal mesh in another metal unit structure, and correspond to each other the 2 of connection
The side length of a metal mesh is aligned.In each metal unit structure, becket is correspondingly arranged in metal mesh.
Test example
By taking the resulting broad passband antenna house of embodiment 1 as an example, after measured, the centre frequency of the broad passband antenna house is
9GHz, can work incidence angle domain be 0-45 °, transmit passband frequency range 8.3-9.4GHz.
Fig. 4 is the simulation curve of the resulting broad passband antenna house of embodiment 1, it can be seen from this figure that embodiment is provided
Broad passband antenna house in 7.8-9.4GHz broadband range, Insertion Loss be less than 0.7dB.
Fig. 5 is the TE polarized wave transmission coefficient of the resulting broad passband antenna house of embodiment 1, and Fig. 6 is the resulting width of embodiment 1
The TM polarized wave transmission coefficient of passband antenna house.In conjunction with fig. 4 to fig. 6 as can be seen that the broad passband antenna house is in 8.3-9.4GHz
In this free transmission range, for the electromagnetic wave of 0-45 ° of angular domain incidence, frequency selection layer TE, TM wave insertion loss is respectively less than
0.7dB；Transmission band is wider, and resonance frequency is relatively stable with incidence angle variation；In this inhibition frequency range model of 11.5-18GHz
It encloses the interior transmission inhibition to TE and TM wave and is above 20dB, Out-of-band rejection is functional；To the electromagnetic wave of non-normal incidence, only exist
16GHz or more has certain fluctuation, and the band-stop response of band segment has certain die down.
In addition, being tested for the property respectively to the resulting broad passband antenna house of embodiment 2-4 after the same method, tie
Fruit shows, the performance of embodiment 2 to the performance of the resulting broad passband antenna house of embodiment 4 and the broad passband antenna house of embodiment 1
It is almost the same.
To sum up, broad passband antenna house provided by the present application is that one kind can provide good band logical filter in wide-angle domain
The broad passband Wide stop bands frequency-selective surfaces structure and its antenna house of wave performance.The broad passband antenna house is in work angular domain and work
There can be good transmission to show in frequency range, have the characteristics that low insertion loss and high rectangle absorb, and in lower damage
Under the use of consumption material, the Insertion Loss of antenna house be can control lower.Low transmission performance outside working band, can be effective
External electromagnetic wave is reduced to the interference damage etc. of antenna system and its place equipment, can widely be applied to radar, base station
In the radome design of the antenna systems such as communication, aircraft.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of broad passband antenna house, which is characterized in that it includes the first exterior skin layer, the first foam structure layer, first frequency
Select layer, the second foam structure layer, second frequency selection layer, third foam structure layer and the second exterior skin layer；
First foam structure layer is set to the surface of the side of the first exterior skin layer；The first frequency selection layer is set
It is placed in the surface of the side far from the first exterior skin layer of first foam structure layer；Second foam structure layer is set
It is placed in the surface of the side far from first foam structure layer of the first frequency selection layer；The second frequency selects layer
It is set to the surface of the side far from first frequency selection layer of second foam structure layer；The third foaming structure
Layer is set to the surface of the side far from second foam structure layer of the second frequency selection layer；Second exterior skin
Layer is set to the surface of the side far from second frequency selection layer of the third foam structure layer；
The first frequency selection layer and second frequency selection layer by medium substrate and are attached to the medium substrate
Surface periodic metal pattern composition.
2. broad passband antenna house according to claim 1, which is characterized in that the metal pattern is by metal mesh and becket
It is formed, the becket is set in the metal mesh and the center of the becket and the center of the metal mesh are overlapped.
3. broad passband antenna house according to claim 2, which is characterized in that the metal mesh and the becket are in just
Rectangular or regular hexagon.
4. broad passband antenna house according to claim 3, which is characterized in that the metal mesh and the becket are in just
Rectangular, the side length of the metal mesh is 9-9.6mm；And/or the line width of the becket is 2.5-2.8mm, the becket
Internal diameter is 2.8-3.2mm；And/or metal mesh described in same period inner wall and the becket outer wall between gap be
0.2-0.3mm。
5. broad passband antenna house according to claim 2, which is characterized in that the becket with a thickness of 0.018-
0.035mm；And/or the metal mesh with a thickness of 0.018-0.035mm.
6. broad passband antenna house according to claim 1, which is characterized in that the medium substrate includes Kapton
Or epoxy glass fiber plate；And/or the medium substrate with a thickness of 0.02-0.1mm.
7. broad passband antenna house according to claim 1, which is characterized in that outside the first exterior skin layer and described second
For skinning layer by quartz fiber cloth and resin-bonded curing molding, the resin includes vinylite or cyanate ester resin；
Preferably, the dielectric constant of the material of the first exterior skin layer and the second exterior skin layer is 3-3.2；
Preferably, the thickness of the first exterior skin layer and the second exterior skin layer is 1.4-1.6mm.
8. broad passband antenna house according to claim 1, which is characterized in that first foam structure layer, described second
The material of foam structure layer and the third foam structure layer includes PVC foam or PMI foam；
Preferably, the material of first foam structure layer, second foam structure layer and the third foam structure layer
Dielectric constant be 1.1-1.2.
9. broad passband antenna house according to claim 1, which is characterized in that first foam structure layer and the third
The thickness of foam structure layer is 6.2-6.8mm, second foam structure layer with a thickness of 5.8-6.2mm.
10. a kind of application of such as described in any item broad passband antenna houses of claim 1-9, which is characterized in that the broad passband
Antenna house is used as the antenna house of the antenna system of radar, base station communication or aircraft.
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