CN206313137U - Microstrip antenna device - Google Patents
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- CN206313137U CN206313137U CN201621257877.XU CN201621257877U CN206313137U CN 206313137 U CN206313137 U CN 206313137U CN 201621257877 U CN201621257877 U CN 201621257877U CN 206313137 U CN206313137 U CN 206313137U
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Abstract
The utility model discloses a kind of microstrip antenna device, its radiation source, dielectric layer and reference ground and feeding coaxial lines；Radiation source is the radiation patch of rectangle；And the overall cross section of microstrip antenna device is rectangular shape；The internal core wire of feeding coaxial lines sequentially passes through reference ground, dielectric layer and radiation source, and a part for feeding coaxial lines is fixed in the region of reference ground, and another part of feeding coaxial lines is fixed in the region of radiation source；The centre frequency of microstrip antenna device is 2.5G Hz；Dielectric constant=3.38 of dielectric layer, and dielectric layer thickness h=5mm.Above-mentioned microstrip antenna device uses coaxial feeding；It has the microstrip antenna of above-mentioned corresponding size and parameter characteristic by being based on FInite Element and cavity model method structure simultaneously, the microstrip antenna device technical advantage such as have small volume, wideband, quality high, microwave antenna equipment is used in being particularly suitable for the passenger safety warning line system of railway transport of passengers platform.
Description
Technical field
The utility model is related to caution device technical field, more particularly to a kind of microstrip antenna device.
Background technology
With the development that railway modernization is built, the continuous progress of high ferro technology, passenger's waiting environment, automatic ticketing and inspection
Ticket etc. is automatic, and self-oriented service ability is constantly lifted.
Meanwhile, the platform of secular stagnation order of waiting is necessary to carry out modernization restructuring, therefore I with security maintenance system
Company researcher by new technological means, develop a kind of security warning linear system system can alarm prompt in time active detection
Whether passenger spans safe police timberline (i.e. similar to conventional security white line).
In the design process, it is found that noncontact warning device conventional at present mainly has laser, infrared, ultrasonic wave and microwave
Deng.Laser and infrared alarm are mainly using to penetrating and reflecting two ways.Wherein, the mode of penetrating is needed to be installed in warning region
There are Laser emission and receiver, transmitting-receiving light beam can form a laser enclosure taking precautions against in region.By taking station platform as an example, can
Laser enclosure is formed with along safe white line, but its needs establishes laser transmitting-receiving railing on platform, it is clear that and it does not meet station
Platform construction requirements；Reflection mode can detect target according to target to the back wave of light beam, although can bury detector
In platform below ground, but due to the linear propagation characteristic of light beam, one group of sensor can only cover the region on light, for station
The covering of the safe white line of platform does not obviously have operability.Meanwhile, infrared acquisition is also easy to be subject to the shadow of sunshine and temperature
Ring, easy timeliness or false-alarm, are not suitable as the security warning means of platform especially under summer high temperature, direct sunlight.
Although supersonic sounding can cover certain search coverage, one side device search coverage is not easily controlled, it is impossible to
The search coverage of sector shape is formed, while being also easily subject to that The clamors of the people bubble up is disturbed with the ambient noise such as locomotive, is also not suitable for
As the detection means of platform safety alarming.
However, microwave is the very short radio wave of wavelength, very well, speed is equal to the light velocity to the directionality of microwave.Radar declines
Wave detector is a kind of detector for closing microwave receiving and sending equipment and putting, and operation principle is based on Doppler effect.The wavelength of microwave is very
It is short, between 1mm~1000mm, therefore it is easy to be reflected by the object.Microwave signal run into mobile object reflection after can produce it is many
General Le effect, i.e., microwave signal after reflection can produce small skew with the frequency of transmitted wave signal.
Microwave warns technology based on echo Doppler effect, using state-of-the-art flat plane antenna, can effectively suppress high
The Gan Rao ﹑ Ling sensitivity Gao ﹑ of subharmonic and other clutters are by Xing the Qiang ﹑ full side Bian ﹑ intelligent power savings of An, the first-selection of station safety detection
Technology.
However, for the passenger safety warning line system of railway transport of passengers platform, designing a suitable microstrip antenna device
It is still conventionally a blank；Therefore, how to design the antenna assembly of a suitable security warning linear system system is
Those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of microstrip antenna device, to solve the above problems.
Due to the directional scattering and the rectilinear propagation properties of microwave of microwave antenna, its beam coverage area is easily controlled, and holds
Easily according to search coverage formed wave cover, when personage or object are moved in the induction range of microwave, will start feeling should
Device, sends alarm signal.
In order to achieve the above object, the technical solution of the utility model is realized in：
The utility model provides a kind of microstrip antenna device, including radiation source, Jie being cascading from top to bottom
Matter layer and reference ground and feeding coaxial lines；
The radiation source is the radiation patch of rectangle；And the overall cross section of the microstrip antenna device is rectangular shape；
The internal core wire of the feeding coaxial lines sequentially passes through the reference ground, the dielectric layer and the radiation source, and the feed is same
A part for axis is fixed in the region of the reference ground, and another part of the feeding coaxial lines is fixed on the radiation source
Region in (realize that feeding coaxial lines are connected with radiation source)；
The centre frequency of the microstrip antenna device is 2.5GHz；The permittivity ε of the dielectric layerr=3.38, and institute
State the thickness h=5mm of dielectric layer；The microstrip antenna device realizes feed by the feeding coaxial lines.
Preferably, can embodiment as one kind；The dielectric layer is specially Rogers R04003 substrates.
Preferably, can embodiment as one kind；The feeding coaxial lines of the microstrip antenna device stretch out the reference ground
One end be provided with microstrip antenna coaxial feeder joint (i.e. radio-frequency joint)；The microstrip antenna coaxial feeder joint is specially
I-PEX radio-frequency joints.
Preferably, can embodiment as one kind；The length L of the radiation patch of the rectangle is 30.2mm, and its width W is
40.6mm。
Preferably, can embodiment as one kind；The length L of the reference groundGND>=60.3mm, its width WGND≥
70.5mm；And its specific size of the reference ground is length LGND90mm, width WGND90mm。
Preferably, can embodiment as one kind；The length LG of the dielectric layer is 80mm, and width WG is 80mm.Need
What is illustrated is, it is obvious that above-mentioned dielectric layer also has certain size to require, its detailed dimensions length is that LG is 80mm, width WG
It is 80mm, thickness h is 5mm.
Preferably, can embodiment as one kind；The radius of the feeding coaxial lines is 0.5mm, and length is 5mm.
Preferably, can embodiment as one kind；The length Δ L of the microstrip antenna radiating slot of the microstrip antenna device
It is 2.34mm.
Preferably, can embodiment as one kind；The feed point position input impedance of the microstrip antenna device is equal to 50 Ω.
Compared with prior art, the advantage of the utility model embodiment is：
A kind of microstrip antenna device that the utility model is provided, its radiation mainly by being cascading from top to bottom
Source, dielectric layer and reference ground and sequentially pass through the structure compositions such as the feeding coaxial lines of reference ground, dielectric layer and radiation source；
Wherein, the radiation source is the radiation patch of rectangle；And the overall cross section of the microstrip antenna device is rectangle
Shape；The internal core wire of the feeding coaxial lines sequentially passes through the reference ground, the dielectric layer and the radiation source, and the feedback
A part for electric coaxial line is fixed in the region of the reference ground, and another part of the feeding coaxial lines is fixed on the spoke
Penetrate in the region in source (realize that feeding coaxial lines are connected with radiation source)；The centre frequency of the microstrip antenna device is
2.5GHz；The permittivity ε of the dielectric layerr=3.38, and the dielectric layer thickness h=5mm；The microstrip antenna device
Realize feeding by the feeding coaxial lines.
It should be noted that three key parameters of above-mentioned microstrip antenna device are as follows：Working frequency f0=2.5GHz is (i.e.
The centre frequency of the microstrip antenna device)；The permittivity ε of medium sheet materialr=3.38；Thickness of dielectric layers h=5mm.That is institute
State dielectric layer specially Rogers R04003 substrates, its relative dielectric constant of dielectric layer εr=3.38, the dielectric layer
Thickness h=5mm, the microstrip antenna device realizes feed by the feeding coaxial lines.
The microstrip antenna device that the utility model is provided is a kind of micro-strip paster antenna of coaxial feed, and it is used together
Axis is fed, that is, the internal core wire of coaxial wire terminal is connected through reference ground and dielectric layer with radiation source.It is passed through simultaneously
Cross the microstrip antenna that corresponding size and parameter characteristic are had based on FInite Element and cavity model method structure, the micro-strip day
The line technical advantage such as have small volume, wideband, quality high, is particularly suitable for the passenger safety warning line system of railway transport of passengers platform
Middle microwave antenna equipment is used.
Brief description of the drawings
In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some implementation methods of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
The dimensional structure diagram of the microstrip antenna device that Fig. 1 is provided for the utility model embodiment；
The overlooking the structure diagram of the microstrip antenna device that Fig. 2 is provided for the utility model embodiment；
The side structure schematic view of the microstrip antenna device that Fig. 3 is provided for the utility model embodiment；
The schematic diagram of the feed point position in the microstrip antenna device that Fig. 4 is provided for the utility model embodiment；
The perspective structure of the microstrip antenna device that Fig. 5 is provided for the utility model embodiment with feeding coaxial lines is illustrated
Figure；
Fig. 6 is creating the signal of microstrip antenna model coordinate for the microstrip antenna device that the utility model embodiment is provided
Figure；
Fig. 7 is creating the schematic diagram of dielectric layer for the microstrip antenna device that the utility model embodiment is provided；
Fig. 8 is creating the schematic diagram of radiation patch for the microstrip antenna device that the utility model embodiment is provided；
Signal of the microstrip antenna device that Fig. 9 is provided for the utility model embodiment in the inner core for creating feeding coaxial lines
Figure；
Description of reference numerals：
Radiation source 1；Dielectric layer 2；Reference ground 3；Feeding coaxial lines 4.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
It is term " " center ", " on ", D score, "left", "right", " perpendicular, it is necessary to explanation in description of the present utility model
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " are, based on orientation shown in the drawings or position relationship, to be only
Described with simplified for the ease of description the utility model, must be with spy rather than the device or element for indicating or imply meaning
Fixed orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
Can be two connections of element internal.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The utility model is described in further detail below by specific embodiment and with reference to accompanying drawing.
Referring to Fig. 1, a kind of microstrip antenna device that the utility model embodiment is provided, including stack gradually set from top to bottom
Radiation source 1, dielectric layer 2 and the reference ground 3 and feeding coaxial lines 4 put；
The radiation source 1 is the radiation patch of rectangle；And the overall cross section of the microstrip antenna device is rectangular shape；
The internal core wire of the feeding coaxial lines 4 sequentially passes through the reference ground 3, the dielectric layer 2 and the radiation source 1, and the feedback
A part for electric coaxial line 4 is fixed in the region of the reference ground 3, and another part of the feeding coaxial lines 4 is fixed on institute
State in the region of radiation source 1 (realize that feeding coaxial lines 4 are connected with radiation source 1)；
The centre frequency of the microstrip antenna device is 2.5GHz；The permittivity ε of the dielectric layerr=3.38, and institute
State the thickness h=5mm of dielectric layer；The microstrip antenna device realizes feed by the feeding coaxial lines.It should be noted that
Three key parameters of above-mentioned microstrip antenna device are as follows：Working frequency f0=2.5GHz is (in i.e. described microstrip antenna device
Frequency of heart)；The permittivity ε of medium sheet materialr=3.38；Thickness of dielectric layers h=5mm.I.e. described dielectric layer is specially Rogers
R04003 substrates, its relative dielectric constant of dielectric layer εr=3.38, the thickness h=5mm of the dielectric layer, the micro-strip day
Line apparatus realize feed by the feeding coaxial lines.
The microstrip antenna device that the utility model is provided is a kind of micro-strip paster antenna of coaxial feed, and it is used together
Axis is fed, that is, the internal core wire of coaxial wire terminal is connected through reference ground and dielectric layer with radiation source.It is passed through simultaneously
Cross the microstrip antenna that corresponding size and parameter characteristic are had based on FInite Element and cavity model method structure, the micro-strip day
The line technical advantage such as have small volume, wideband, quality high, is particularly suitable for the passenger safety warning line system of railway transport of passengers platform
Middle microwave antenna equipment is used.
The concrete structure and particular technique effect of the microstrip antenna device for providing the utility model embodiment below do
Once describe in detail：
Preferably, can embodiment as one kind；The dielectric layer is specially Rogers R04003 substrates.
Preferably, can embodiment as one kind；The feeding coaxial lines of the microstrip antenna device stretch out the reference ground
One end be provided with microstrip antenna coaxial feeder joint；(i.e. radio-frequency joint)；The microstrip antenna coaxial feeder joint is specially
I-PEX radio-frequency joints.
Preferably, can embodiment as one kind；The length L of the radiation patch of the rectangle is 30.2mm, and its width W is
40.6mm。
Preferably, can embodiment as one kind；The length L of the reference groundGND>=60.3mm, its width WGND≥
70.5mm, and its specific size of the reference ground is length LGND90mm, width WGND90mm。
Preferably, can embodiment as one kind；The length LG of the dielectric layer is 80mm, and width WG is 80mm.Need
What is illustrated is, it is obvious that above-mentioned dielectric layer also has certain size to require, its detailed dimensions length is that LG is 80mm, width WG
It is 80mm, thickness h is 5mm.
Preferably, can embodiment as one kind；The radius of the feeding coaxial lines is 0.5mm, and length is 5mm.
Preferably, can embodiment as one kind；The length Δ L of the microstrip antenna radiating slot of the microstrip antenna device
It is 2.34mm.
Preferably, can embodiment as one kind；The feed point position input impedance of the microstrip antenna device is equal to 50 Ω.
The length L of radiation source, the width W of radiation source, the thickness h of dielectric layer, the relative dielectric constant ε of mediumr, dielectric layer
Length LG and dielectric layer width WG.1st, the length L of the radiation patch of rectangle is 30.2mm, and its width W is 40.6mm, its Jie
The effective dielectric constant ε of matter layerr=3.38；2nd, the length Δ L=2.34mm of radiating slot；3rd, its of the reference ground is specific
Size is length LGND90mm, width WGND90mm。
Be briefly described below, by based on FInite Element and cavity model method structure have corresponding size and
The process of the microstrip antenna device of parameter characteristic；
Micro-strip paster antenna shown in Fig. 1 is fed using microstrip line, and the rectangle that the utility model will be designed is micro-
Band paster antenna uses coaxial feeding, that is, the internal core wire of coaxial wire terminal is passed through into reference ground and dielectric layer and spoke
The source of penetrating is connected.
For rectangular microstrip patch antenna, its performance can be analyzed during theory analysis using transmission line model.Rectangle is pasted
The work holotype of piece microstrip antenna is TM10Mould, it is meant that electric field has the change of λ g/2 on length L directions, and in width W
Keep constant on direction, as shown in Fig. 2 the gap radiation that two open-ends are considered as on length L directions goes out electricity
Magnetic energy, width W directions edge due to open-end, so magnitude of voltage maximum current value is minimum.From figure 3, it can be seen that
The electric field at microstrip line edge can resolve into the component perpendicular to reference ground and the component two parts parallel to reference ground, two sides
The vertical component of edge is equal in magnitude, in opposite direction, and parallel electric field component size is equal, in opposite direction；Therefore, far field radiated electric field
Vertical component is cancelled out each other, and radiated electric field is parallel to antenna surface.
Assuming that the effective length of rectangular patch is set to Le, then have
Le=λ g/2；(4-1)
In formula, λ g represent guide wavelength, have
In formula, λ0Represent free space wavelength；εeEffective dielectric constant is represented, and
In formula, εrRepresent the relative dielectric constant of medium；H represents thickness of dielectric layers；W represents the thickness of microband paste.
Thus, the physical length L of rectangular patch can be calculated, is had
In formula, c represents the light velocity in vacuum；f0Represent the working frequency of antenna；Δ L represents the equivalent spoke shown in Fig. 2
The length in gap is penetrated, and is had
The width W of rectangular patch can be calculated by following formula：
For the micro-strip paster antenna of coaxial feeding, after patch length L and width W is determined, in addition it is also necessary to it is determined that
The position of coaxial feeding, the position of feed can influence the input impedance of antenna.50 Ω would generally be used in microwave applications, it is right
In the micro-strip paster antenna of coaxial feeding, the origin of coordinates is located at the center of paster, with (xf, yf) represent the position coordinates for feeding
(the specific top view of microstrip antenna device as schematically shown in Figure 4, the side-looking of microstrip antenna device referring also to illustrated in Figure 5
Perspective structure figure).
For TM10Pattern, electric field length is constant on W directions, therefore any point on W directions can serve as in theory
Feed, for avoiding exciting TM1nIn central point, i.e., pattern, the position fed on W directions typically takes
yf=0；(4-7)
Electric field has the change of λ g/2 in the l-direction, therefore on length L directions, from central point to both sides, impedance gradually becomes
Greatly, feed point position when input impedance is equal to 50 Ω can be calculated by following formula
In formula,
Above-mentioned analysis is all based on the basis of reference horizontal plane of manufacturing is infinity, but in actual design, reference ground is all
Limited areal, theory analysis demonstrate when reference horizontal plane of manufacturing is bigger than microband paste go out 6h apart from when, result of calculation can
It is enough accurate to reach, thus in design reference ground length LGNDWith width WGNDAs long as meeting two formula, i.e.,
LGND≥L+6h；(4-10)
WGND≥W+6h；(4-11)
The rectangular microstrip antenna centre frequency of this project is 2.5GHz, and the medium sheet material of selection is Rogers R04003, its
Relative dielectric constant εr=3.38, thickness h=5mm, antenna uses coaxial feeding.Three key parameters of microstrip line are as follows：
Working frequency f0=2.5GHz；The permittivity ε of medium sheet materialr=3.38；Thickness of dielectric layers h=5mm.
(1) the width W of rectangular patch；
C=3.0 × 108M/s, f0=2.5GHz, εr=3.38 substitute into formula (4-1), can calculate microstrip antenna square
The width of shape paster, i.e.,
W=0.04054m=40.6mm
(2) effective dielectric constant εe；
H=5mm, W=40.6mm, εr=3.38 substitute into formula (4-6), can calculate microstrip antenna rectangular patch
Width, i.e.,
εe=2.95
(3) the length Δ L of radiating slot；
H=5mm, W=40.6mm, εe=2.95 substitute into formula (4-5), can calculate microstrip antenna radiating slot
Length, i.e.,
Δ L=2.34mm
(4) the length L of rectangular patch；
C=3.0 × 108M/s, f0=2.5GHz, εe=2.95, Δ L=2.34mm substitute into formula (4-4), can calculate
Go out the length of microstrip antenna rectangular patch, i.e.,
L=30.2mm
(5) the length L of reference groundGNDWith width WGND；
H=5mm, W=40.6mm, L=30.2mm substitute into formula (4-10) and formula (4-11) respectively, can calculate micro-
Length and width with antenna reference ground, i.e.,
LGND≥60.3mm；WGND≥70.5mm；
This project antenna uses the microstrip structure of coaxial feeding, and HFSS engineerings can be driven with selection mode and solve type.
If necessary to calculate far region radiation field in HFSS, it is necessary to radiation border surface or PML border surfaces are set, used here as spoke
Penetrate boundary condition.For the accuracy for ensureing to calculate, radiation border surface distance radiation source is generally needed more than 1/4 wavelength.
Because having used radiation border surface, the signal input output end mouthful of coaxial line feeder line is located inside model, therefore port
Energisation mode needs to be defined as the excitation of lump port.
The centre frequency 2.5GHz of antenna, therefore it is 2.5GHz to set the solution frequency of HFSS, while addition 1.5G-
The scan setting of 3.5GHz, return loss or voltage standing wave ratio of the analysis antenna in 1.5G -3.5GHz frequency ranges.If my god
Return loss or voltage standing wave ratio scanning result the display resonant frequency of line do not fall within 2.5GHz, also need to add parameter scanning
Analysis, and optimization design is carried out, change the size of microband paste and the position of coaxial line feed point, it is linear with the day for reaching good
Energy.
According to theoretical calculation, microstrip antenna model is created
(1) reference ground is created
A summit is created on the XOY faces of Z=0 and is located at (- 45mm, -45mm), size is the rectangle of 90mm × 90mm
Face is named as GND as reference ground, and for it distributes perfact conductor boundary condition (referring specifically to Fig. 6).
(2) dielectric layer is created
As shown in fig. 7, it is the rectangle of 80mm × 80mm × 5mm as medium flaggy to create length × width × height, it is situated between
The bottom of scutum layer is located in reference ground (i.e. on the XOY faces of z=0), and its apex coordinate is (- 40, -40,0), dielectric-slab
Material is R04003.
(3) radiation patch is created
As shown in figure 8, it is (- 15.1mm, -20.3mm, 5mm) that an apex coordinate is created on the XOY faces of z=5, greatly
Small is the rectangular surfaces of 30.2mm × 40.6mm as microband paste, is named as Patch, and be its distribution perfact conductor perimeter strip
Part.
(4) inner core of feeding coaxial lines is created
As shown in figure 9, creating inner core of the cylinder as coaxial feeder, the radius of cylinder is 0.5mm, and length is
5mm, cylinder bottom central coordinate of circle is (8.9mm, 0,0), and material is perfact conductor, and coaxial feeder is named as Feed.
(5) signal transmission port face is created
Coaxial feeder is needed through reference ground, transmitted signal energy.Accordingly, it would be desirable to open one on reference ground GND
Circular hole allows energy to transmit, and the radius of circular hole is 1.5mm, and central coordinate of circle is (8.9mm, 0,0), and is named as Port.
Create a cuboid, its apex coordinate be (- 80, -80, -35), the rectangular a height of 160mm of length and width,
160mm, 75mm, cuboid simulation free space, therefore material is vacuum, cuboid is named as Air, creates such one
After individual cuboid, its surrounded surface is set for radiation boundary condition.
Excitation port is set：The energisation mode of coaxial line signal port face (i.e. disc Port) is set for lump port is swashed
Encourage.
(8) add and use variable
Addition design variable Length, initial value is 30.2mm, is used to represent and swashs the length with paster：Addition design variable
Width, initial value is 40.6mm, is used to represent the width of microband paste：Addition design variable xf, initial value is 8.9mm, is used to
Represent the x-axis coordinate of the centre point of coaxial feeder.
The micro-strip paster antenna centre frequency of this Project design is in 2.5GHz, because setting the solution frequency of HFSS (i.e. certainly
Adaptive mess subdivision frequency) it is 2.5GHz；The scan setting of 1.5-3.5GHz, quick (Fast) the frequency sweep class of selection are added simultaneously
Type, return loss or voltage standing wave ratio of the analysis antenna in 1.5-3.5GHz frequency ranges.
By operation above, have been completed model creation and solve the previous work of the HFSS such as setting designs, connect down
Can just run simulation calculation, and check analysis result.Before simulation calculation is run, it usually needs be designed inspection
Look into, check the integrality and correctness of design.
It should be noted that the utility model have also been devised follow-up setting excitation port and addition and use variable etc.
Step, no longer repeats this utility model one by one.In a word, proved by some design processes for arranging, because width is to micro-strip day
The influence of line is not high, so still taking former w values 40.6mm.
Design and technical optimization more than, project realize safe white line inner side (pointing to train direction) perpendicular to the ground with
The 180 degree in upper space is detected without dead angle so that each microwave radar probe unit is formed perpendicular to the 1/ of ground along safe white line
4 spheroid wave beams.By multiple detector linear distributions, it is linked to be and warns wall along the stereo safety of safe white line, it is microwave radar
Detecting devices is laid in ground handling and has established technical foundation.
The microstrip antenna device that the utility model embodiment is provided, each of which rolling stock unit all has special structure
Design, and between the concrete structure device of each rolling stock unit connect, layout etc. have cleverly design；Therefore, originally
The microstrip antenna device that utility model embodiment is provided, its design is more reasonable, and system architecture is more novel, function is more added
It is kind.
Many significant technical advantages based on more than, the microstrip antenna device that the utility model is provided will bring good
Market prospects and economic benefit.
Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of microstrip antenna device, it is characterised in that including the radiation source, dielectric layer and the ginseng that are cascading from top to bottom
Examine ground and feeding coaxial lines；
The radiation source is the radiation patch of rectangle；And the overall cross section of the microstrip antenna device is rectangular shape；It is described
The internal core wire of feeding coaxial lines sequentially passes through the reference ground, the dielectric layer and the radiation source, and the feeding coaxial lines
A part be fixed in the region of the reference ground, another part of the feeding coaxial lines is fixed on the area of the radiation source
In domain；
The centre frequency of the microstrip antenna device is 2.5GHz；The permittivity ε of the dielectric layerr=3.38, and the medium
Thickness h=the 5mm of layer；The microstrip antenna device realizes feed by the feeding coaxial lines.
2. microstrip antenna device as claimed in claim 1, it is characterised in that
The dielectric layer is specially Rogers R04003 substrates.
3. microstrip antenna device as claimed in claim 2, it is characterised in that
One end that the feeding coaxial lines of the microstrip antenna device stretch out the reference ground is provided with microstrip antenna coaxial feeder and connects
Head.
4. microstrip antenna device as claimed in claim 3, it is characterised in that
The length L of the radiation patch of the rectangle is 30.2mm, and its width W is 40.6mm.
5. microstrip antenna device as claimed in claim 4, it is characterised in that
The length L of the reference groundGND>=60.3mm, the width W of the reference groundGND≥70.5mm。
6. microstrip antenna device as claimed in claim 5, it is characterised in that
Its specific size of the reference ground is length LGND90mm, width WGND90mm。
7. microstrip antenna device as claimed in claim 6, it is characterised in that
The length LG of the dielectric layer is 80mm, and width WG is 80mm.
8. microstrip antenna device as claimed in claim 7, it is characterised in that
The radius of the feeding coaxial lines is 0.5mm, and length is 5mm.
9. microstrip antenna device as claimed in claim 8, it is characterised in that
The length Δ L of the microstrip antenna radiating slot of the microstrip antenna device is 2.34mm.
10. microstrip antenna device as claimed in claim 9, it is characterised in that
The feed point position input impedance of the microstrip antenna device is equal to 50 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257877.XU CN206313137U (en) | 2016-11-22 | 2016-11-22 | Microstrip antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257877.XU CN206313137U (en) | 2016-11-22 | 2016-11-22 | Microstrip antenna device |
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| CN108879080A (en) * | 2018-06-22 | 2018-11-23 | 深圳迈睿智能科技有限公司 | Plate aerial |
| CN108987914A (en) * | 2018-07-05 | 2018-12-11 | 易力声科技(深圳)有限公司 | A kind of paster antenna for making frequency modulation using closing line |
| CN109390677A (en) * | 2017-08-08 | 2019-02-26 | 深圳市道通智能航空技术有限公司 | Antenna module and the electronic equipment with this antenna module, remote controler |
| CN109873249A (en) * | 2017-12-04 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of micro-strip navigation antenna with air back chamber |
| CN110416720A (en) * | 2019-08-26 | 2019-11-05 | 上海矽杰微电子有限公司 | It is a kind of for finely tuning the microstrip antenna and its tuning methods of resonance frequency |
| WO2019237514A1 (en) * | 2018-06-11 | 2019-12-19 | 深圳迈睿智能科技有限公司 | Antenna having anti-interference configuration and fabrication method therefor |
| CN111693933A (en) * | 2020-06-18 | 2020-09-22 | 成都锦江电子系统工程有限公司 | Radar signal instantaneous wide-azimuth direction-finding system |
| CN113594687A (en) * | 2020-04-30 | 2021-11-02 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN113871880A (en) * | 2021-09-27 | 2021-12-31 | 西安电子科技大学 | Coaxial feed microstrip antenna based on strip line |
| CN115004476A (en) * | 2020-01-30 | 2022-09-02 | 株式会社村田制作所 | Antenna device |
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| CN109390677A (en) * | 2017-08-08 | 2019-02-26 | 深圳市道通智能航空技术有限公司 | Antenna module and the electronic equipment with this antenna module, remote controler |
| CN109390677B (en) * | 2017-08-08 | 2024-06-07 | 深圳市道通智能航空技术股份有限公司 | Antenna assembly, wireless communication electronic equipment with same and remote controller |
| CN109873249A (en) * | 2017-12-04 | 2019-06-11 | 北京自动化控制设备研究所 | A kind of micro-strip navigation antenna with air back chamber |
| WO2019237514A1 (en) * | 2018-06-11 | 2019-12-19 | 深圳迈睿智能科技有限公司 | Antenna having anti-interference configuration and fabrication method therefor |
| CN108879080A (en) * | 2018-06-22 | 2018-11-23 | 深圳迈睿智能科技有限公司 | Plate aerial |
| CN108879080B (en) * | 2018-06-22 | 2024-03-19 | 深圳迈睿智能科技有限公司 | Flat antenna |
| CN108987914A (en) * | 2018-07-05 | 2018-12-11 | 易力声科技(深圳)有限公司 | A kind of paster antenna for making frequency modulation using closing line |
| CN110416720A (en) * | 2019-08-26 | 2019-11-05 | 上海矽杰微电子有限公司 | It is a kind of for finely tuning the microstrip antenna and its tuning methods of resonance frequency |
| CN115004476A (en) * | 2020-01-30 | 2022-09-02 | 株式会社村田制作所 | Antenna device |
| CN115004476B (en) * | 2020-01-30 | 2024-04-02 | 株式会社村田制作所 | Antenna device |
| WO2021218392A1 (en) * | 2020-04-30 | 2021-11-04 | Oppo广东移动通信有限公司 | Antenna module and electronic device |
| TWI779577B (en) * | 2020-04-30 | 2022-10-01 | 大陸商Ｏｐｐｏ廣東移動通信有限公司 | Antenna modules and electronic equipment |
| CN113594687A (en) * | 2020-04-30 | 2021-11-02 | Oppo广东移动通信有限公司 | Antenna module and electronic equipment |
| CN111693933B (en) * | 2020-06-18 | 2023-08-25 | 成都锦江电子系统工程有限公司 | Radar signal instantaneous wide-azimuth direction finding system |
| CN111693933A (en) * | 2020-06-18 | 2020-09-22 | 成都锦江电子系统工程有限公司 | Radar signal instantaneous wide-azimuth direction-finding system |
| CN113871880A (en) * | 2021-09-27 | 2021-12-31 | 西安电子科技大学 | Coaxial feed microstrip antenna based on strip line |
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