CN109428153A - Antenna element, trailer-mounted radar and automobile - Google Patents
Antenna element, trailer-mounted radar and automobile Download PDFInfo
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- CN109428153A CN109428153A CN201710720042.6A CN201710720042A CN109428153A CN 109428153 A CN109428153 A CN 109428153A CN 201710720042 A CN201710720042 A CN 201710720042A CN 109428153 A CN109428153 A CN 109428153A
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- earth plate
- antenna element
- array
- medium substrate
- antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of antenna element, trailer-mounted radar and automobile, the antenna element includes: medium substrate；It is formed in the co-planar waveguide component of medium substrate side；It is formed in medium substrate side and the together connected array antenna of surface wave guide assembly；It is formed in the back earth plate of the medium substrate other side, wherein the underface of back earth plate covering co-planar waveguide component and array antenna.The same face of medium substrate is arranged in the co-planar waveguide component and array antenna of the antenna element, it is easy to be connected with the tiny pin of MMIC, thus it is easy to be arranged in MMIC the same face of medium substrate, it advantageously reduces the usable floor area of medium substrate and reduces the overall price of trailer-mounted radar, and without using the hardware containing wave-guide cavity wave, radar total quality can be reduced.
Description
Technical field
It is the present invention relates to antenna technical field, in particular to a kind of antenna element, a kind of with the vehicle-mounted of the antenna element
Radar and a kind of automobile with the trailer-mounted radar.
Background technique
Microstrip antenna is widely used on various trailer-mounted radars due to having many advantages, such as low section, low cost.
In the related technology, a kind of micro-strip comb arrays antenna applied in 77GHz millimeter wave frequency band, the array day are proposed
Line is mainly made of Waveguide-microbelt transition portion, comb-like radiation array antenna and medium substrate, wherein Waveguide-microbelt transition portion
It is mainly made of waveguide short face, chip unit and WR12 standard waveguide feeding interface, and chip unit, WR12 standard waveguide
Feeding interface is in the front of medium substrate, and comb-like radiation array antenna is at the back side of medium substrate.
The application target of the micro-strip comb arrays antenna is vehicle-mounted millimeter wave radar, however, most currently on the market
24GHz or 77GHz frequency range vehicle-mounted millimeter wave radar, radar signal transceiver (transmitter and receiver) all use monolithic
Type micro-wave integrated circuit MMIC (Monolithic Microwave Integrated Circuit, the integrated electricity of single chip microwave
Road), and (width or line footpath are usually difficult to the WR12 standard wave directly with microstrip antenna in 0.3mm or less) to the tiny pin of MMIC
Lead feeding interface (3.1mm, wide about 1.55mm are about in WR12 wave-guide cavity wave) connection.Therefore, MMIC needs to be arranged another piece together
Class medium substrate (MMIC and array antenna are needed using Homogeneous media substrate), by micro- on another piece of Homogeneous media substrate
Band line and Waveguide-microbelt transition portion are presented by the WR12 standard waveguide of WR12 metal waveguide cavity and micro-strip comb arrays antenna
Electrical interface is connected.
It is well known that the unit price of millimeter wave dielectric substrate is much higher than low frequency PCB (Printed Circuit
Board, printed circuit board) medium substrate, the area that millimeter wave dielectric substrate uses is bigger, and the overall price of radar is higher.Cause
This, above-mentioned micro-strip comb arrays antenna will lead to using WR12 standard waveguide feeding interface and at least use two pieces of millimeter wave dielectric bases
Plate, i.e. millimeter wave dielectric substrate area increase, radar overall price increases, and are unable to satisfy vehicle-mounted millimeter wave increasingly with keen competition
The price demand in radar market.Also, above-mentioned micro-strip comb arrays antenna using WR12 standard waveguide feeding interface need using
Metallic waveguide, metal waveguide flange or other contain the hardware of wave-guide cavity wave, to connect the medium base of above-mentioned MMIC
Plate causes vehicle-mounted millimeter wave radar overall weight to increase, is not able to satisfy the demand of automotive light weight technology.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
First purpose is to propose that a kind of antenna element, the co-planar waveguide component and array antenna of the antenna element are arranged in medium base
The same face of plate is easy to be connected with the tiny pin of MMIC, thus is easy to be arranged in MMIC the same face of medium substrate, favorably
In reduce millimeter wave dielectric substrate usable floor area and reduce trailer-mounted radar overall price, simultaneously because antenna element be easy to
The tiny pin of MMIC connects, thus without using the hardware containing wave-guide cavity wave, radar total quality can be reduced.
Second object of the present invention is to propose a kind of trailer-mounted radar.
Third object of the present invention is to propose a kind of automobile.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of antenna element, comprising: medium substrate；
It is formed in the co-planar waveguide component of the medium substrate side；Be formed in the medium substrate side and with the co-planar waveguide group
The connected array antenna of part；It is formed in the back earth plate of the medium substrate other side, wherein the back earth plate covering
The underface of the co-planar waveguide component and the array antenna.
Antenna element according to an embodiment of the present invention, co-planar waveguide component and array antenna are formed in the same of medium substrate
Side, and surface wave guide assembly is connected array antenna together, back earth plate is in the other side of medium substrate, and the covering of back earth plate is altogether
The underface of surface wave guide assembly and array antenna.The co-planar waveguide component and array antenna of the antenna element are arranged in medium substrate
The same face, be easy to be connected with the tiny pin of MMIC, thus be easy to be arranged in MMIC the same face of medium substrate, be conducive to
Reduce millimeter wave dielectric substrate usable floor area and reduce trailer-mounted radar overall price, simultaneously because antenna element be easy to
The tiny pin of MMIC connects, thus without using the hardware containing wave-guide cavity wave, radar total quality can be reduced.
In addition, the antenna element proposed according to that above embodiment of the present invention can also have the following additional technical features:
According to one embodiment of present invention, the array antenna includes at least one microstrip feed line and is arranged described micro-
Multiple array plasters on ribbon feeder.
According to one embodiment of present invention, the microstrip feed line sequentially passes through the middle line of multiple array plasters.
According to one embodiment of present invention, the multiple array plaster includes the first group pattern patch and the second group pattern
Patch, the first group pattern patch are the side that even number and each array plaster are connected to the microstrip feed line, institute
Stating the second group pattern patch is the other side that odd number and each array plaster are connected to the microstrip feed line, is connected to institute
It states the array plaster of microstrip feed line side and is connected to the array plaster of the microstrip feed line other side along the microstrip feed line
Length direction is arranged alternately.
According to one embodiment of present invention, the co-planar waveguide component includes: intermediate microstrip line, the intermediate microstrip line
It is connected with the microstrip feed line；The first earth plate and the second earth plate positioned at the intermediate microstrip line two sides.
According to one embodiment of present invention, first earth plate and the second earth plate are metal plate.
According to one embodiment of present invention, the intermediate microstrip line and first earth plate have first gap, institute
Stating has Second gap, the width of the first gap and the Second gap between intermediate microstrip line and second earth plate
It is identical.
According to one embodiment of present invention, multiple metals are respectively provided on first earth plate and the second earth plate
Change hole, the plated through-hole with the back earth plate for being connected first earth plate and the second earth plate with shape respectively
At the barrier shield of the co-planar waveguide component.
According to one embodiment of present invention, the array plaster is rectangular patch, and the length of the rectangular patch is humorous
The long half of vibration wave, the spacing between two neighboring rectangular patch are the half of guide wavelength.
According to one embodiment of present invention, the dielectric constant of the medium substrate is 3.4-3.7.
According to one embodiment of present invention, the intermediate microstrip line includes first to third section, wherein described first to
The width of third section gradually increases, and the third section is connected with the array antenna.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of trailer-mounted radar comprising above-mentioned day
Line component.
The trailer-mounted radar of the embodiment of the present invention not only contributes to reduce millimeter wave dielectric base by above-mentioned antenna element
The usable floor area of plate and the overall price for reducing trailer-mounted radar, and without using the hardware containing wave-guide cavity wave, it can
To reduce radar total quality.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of automobile comprising above-mentioned vehicle-mounted thunder
It reaches.
The automobile of the embodiment of the present invention can reduce the overall price of automobile by above-mentioned trailer-mounted radar, while can drop
The complete vehicle quality of low automobile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of antenna element according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of co-planar waveguide component according to an embodiment of the invention；
Fig. 3 is that the return loss simulation result of the full-wave electromagnetic emulation of antenna element according to an embodiment of the invention shows
It is intended to；
Fig. 4 is that the polarization unilateral 1 of the full-wave electromagnetic emulation of antenna element according to an embodiment of the invention and polarization are put down
The Direction Pattern Simulation result schematic diagram in face 2；
Fig. 5 is the structural schematic diagram of antenna element in accordance with another embodiment of the present invention；
Fig. 6 is the structural schematic diagram of co-planar waveguide component in accordance with another embodiment of the present invention；
Fig. 7 is the return loss simulation result signal according to the full-wave electromagnetic emulation of the antenna element of this another embodiment
Figure；
Fig. 8 is that the polarization unilateral 3 of the full-wave electromagnetic emulation of antenna element according to an embodiment of the invention and polarization are put down
The Direction Pattern Simulation result schematic diagram in face 4；
Fig. 9 is the structural schematic diagram of intermediate microstrip line according to an embodiment of the invention；And
Figure 10 is the structural schematic diagram of trailer-mounted radar according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The antenna element proposed according to embodiments of the present invention, trailer-mounted radar and automobile described with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of antenna element according to an embodiment of the invention.
As shown in Figure 1, the antenna element can include: medium substrate 130, the co-planar waveguide group for being formed in medium substrate side
Part 110 is formed in 130 side of medium substrate and the together connected array antenna 120 of surface wave guide assembly 110 and is formed in medium base
The back earth plate 140 of 130 other side of plate.Wherein, array antenna 120 includes at least one microstrip feed line 121 and is arranged micro-
Multiple array plasters 122 on ribbon feeder 121, microstrip feed line 121 sequentially pass through the middle line of multiple array plasters 122.Back
The underface of earth plate 140 covering co-planar waveguide component 110 and array antenna 120.
According to one embodiment of present invention, array plaster 122 is rectangular patch, and the length of rectangular patch is resonance wavelength
Half, the spacing between two neighboring rectangular patch is the half of guide wavelength.
According to one embodiment of present invention, as shown in Figure 1, co-planar waveguide component 110 can include: intermediate microstrip line 111
Be located at intermediate 111 two sides of microstrip line the first earth plate 112 and the second earth plate 113, wherein intermediate microstrip line 111 with it is micro-
Ribbon feeder 121 is connected.
Further, intermediate microstrip line 111 and the first earth plate 112 have first gap, intermediate microstrip line 111 and second
There is Second gap between earth plate 113, first gap and Second gap it is of same size.
In an embodiment of the present invention, the first earth plate 112 and the second earth plate 113 can be metal plate.
Specifically, as shown in Figure 1, co-planar waveguide component 110 and array antenna 120 may be provided at medium substrate 130
Front, the back side of medium substrate 130 is arranged in back earth plate 140, and covers co-planar waveguide component 110 and array antenna 120
Underface.
Wherein, co-planar waveguide component 110 includes intermediate microstrip line 111 and connects positioned at the first of intermediate 111 two sides of microstrip line
Floor 112 and the second earth plate 113 (front earth plate can also be claimed), as shown in Fig. 2, the side at intermediate 111 edge of microstrip line with
With the gap Sp of even width, the other side at intermediate 111 edge of microstrip line and ipsilateral between the first ipsilateral earth plate 112
Also with the gap Sp of even width between second earth plate 113.
Array antenna 120 includes a microstrip feed line 121 and multiple array plasters 122, and the number of specific array plaster can
Determine according to actual needs, for example, 10,10 array plasters 122 are arranged on microstrip feed line 121 at equal intervals, and micro-
Ribbon feeder 121 passes through the middle line of each array plaster 122.Wherein, the centre in surface wave guide assembly 110 together of microstrip feed line 121
One end of microstrip line 111 is connected, and in practical applications, the other end of intermediate microstrip line 111 and the pin of MMIC are connected directly, in
Between microstrip line 111 can be even width microstrip line, it is Wpm that the microstrip line is of same size with microstrip feed line 121.Often
The structure of a array plaster 122 is identical, can be the identical rectangular patch of size, and the length of the rectangular patch is Lp, specifically may be used
Think that the space D p of the half of resonance wavelength, width WP, and adjacent rectangular patch can be the two of guide wavelength
/ mono- or so.
In practical applications, it is designed according to length, the width etc. to all parts such as working frequency of actual antennas,
As a specific example of the invention, when the working frequency of the antenna element is 77GHz, intermediate 111 edge of microstrip line
Gap Sp between two sides and ipsilateral the first earth plate 112 and the second earth plate 113 is about 0.2mm, and microstrip feed line 121 is in
Between the width Wpm of microstrip line 111 be about 0.18mm (being easy to connect with the tiny pin of MMIC), the length Lp of rectangular patch is about
1.46mm, width Wp are about 1.01mm, the space D p of adjacent rectangle patch is about 2mm.In addition, the dielectric of medium substrate 130 is normal
Number can be 3.4-3.7, and thickness can be 0.127mm, co-planar waveguide component 110, array antenna 120 and back earth plate 140
Deposited copper thickness be about 40 μm.
Then, it is emulated using antenna element of the full-wave electromagnetic emulation mode to the specific example.As shown in figure 3, with
Co-planar waveguide component is the return loss simulation result of feed port are as follows: bandwidth of the return loss less than -10dB is about 4.9GHz,
Corresponding frequency band is about 72.7GHz-77.6GHz.As shown in figure 4, with 1 He of polarization plane of 76.5GHz frequency point simulation result
The directional diagram of polarization plane 2 are as follows: the beam angle of polarization plane 1 is 66.8 °, and the beam angle of polarization plane 2 is 10 °, minor lobe
For -10.4dB.
Therefore, the same face of medium substrate is arranged in the co-planar waveguide component of antenna element of the invention and array antenna,
It is easy to be connected with the tiny pin of MMIC, thus is easy to be arranged in MMIC the same face of medium substrate, advantageously reduces millimeter
The usable floor area of wave medium substrate and the overall price for reducing trailer-mounted radar, simultaneously because antenna element is easy to tiny with MMIC
Pin connection, thus without using the hardware containing wave-guide cavity wave, radar total quality can be reduced.
Fig. 5 is the structural schematic diagram of antenna element in accordance with another embodiment of the present invention.
As shown in figure 5, the antenna element can include: medium substrate 230, the co-planar waveguide group for being formed in medium substrate side
Part 210 is formed in 230 side of medium substrate and the together connected array antenna 220 of surface wave guide assembly 210 and is formed in medium base
The back earth plate 240 of 230 other side of plate.Wherein, back earth plate 240 covers co-planar waveguide component 210 and array antenna 220
Underface.
According to one embodiment of present invention, array antenna 220 includes at least one microstrip feed line 221 and is arranged in micro-strip
Multiple array plasters 222 on feeder line 221.
Wherein, array plaster 222 can be rectangular patch, and the length of rectangular patch is the half of resonance wavelength, phase
Spacing between adjacent two rectangular patches is the half of guide wavelength.
Further, multiple array plasters 222 include the first group pattern patch 222a and the second group pattern patch 222b, the
One group pattern patch 222a can be for even number and each array plaster 222 is connected to the side of microstrip feed line 221, second group of battle array
Column patch 222b can be for odd number and each array plaster 222 is connected to the other side of microstrip feed line 221, is connected to micro-strip feedback
The array plaster 222 of 221 side of line and length of the array plaster 222 along microstrip feed line 221 for being connected to 221 other side of microstrip feed line
Degree direction is arranged alternately.Wherein, the number of multiple array plasters can be demarcated according to the actual situation, for example, multiple arrays paste
Piece can be 11 rectangular patches, wherein the first group pattern patch 222a may include 6 rectangular patches, the second group pattern patch
222b may include 5 rectangular patches.
According to one embodiment of present invention, as shown in figure 5, co-planar waveguide component 210 can include: intermediate microstrip line 211
Be located at intermediate 211 two sides of microstrip line the first earth plate 212 and the second earth plate 213, wherein intermediate microstrip line 211 with it is micro-
Ribbon feeder 221 is connected.
Further, as shown in fig. 6, intermediate microstrip line 211 and the first earth plate 212 have first gap, intermediate micro-strip
There is Second gap between line 211 and the second earth plate 213, first gap and Second gap it is of same size.First earth plate
212 and second are respectively provided with multiple plated through-holes 214 on earth plate 213, and plated through-hole 214 is used for the first earth plate 212
It is connected to form the barrier shield of co-planar waveguide component 210 with back earth plate 240 respectively with the second earth plate 213.Wherein, first
Earth plate 212 and the second earth plate 213 can be metal plate.
Specifically, as shown in figure 5, co-planar waveguide component 210 and array antenna 220 may be provided at medium substrate 230
Front, the back side of medium substrate 230 is arranged in back earth plate 240, and covers co-planar waveguide component 210 and array antenna 220
Underface.
Wherein, co-planar waveguide component 210 includes intermediate microstrip line 211 and connects positioned at the first of intermediate 211 two sides of microstrip line
Divide on floor 212, the second earth plate 213 (front earth plate can also be claimed) and the first earth plate 212 and the second earth plate 213
Not Ju You multiple plated through-holes 214, as shown in fig. 6, the side at intermediate 211 edge of microstrip line and the first ipsilateral earth plate 212
Between with even width gap Sc, between the other side at intermediate 211 edge of microstrip line and the second ipsilateral earth plate 213
Gap Sc with even width.Plated through-hole 214 (blind hole) is respectively by the first earth plate 212 and the second earth plate 213 and back
Portion's earth plate 240 is connected to form the barrier shield of co-planar waveguide component 210.
Array antenna 220 includes a microstrip feed line 221 and multiple array plasters 222, and the number of specific array plaster can
Determine according to actual needs, for example, 11, it is two groups that 11 array plasters 222, which are divided to, and the first group pattern patch 222a may include 6
A array plaster 222, the second group pattern patch 222b may include 5 array plasters 222,6 of the first group pattern patch 222a
Array plaster 222 is consecutively connected to the side of microstrip feed line 221, and 5 array plasters 222 of the second group pattern patch 222b are successively
It is connected to the other side of microstrip feed line 221.Wherein, the intermediate microstrip line 211 in surface wave guide assembly 210 together of microstrip feed line 221
One end be connected, in practical applications, the other end of intermediate microstrip line 211 and the pin of MMIC are connected directly, intermediate microstrip line
211 is of same size with microstrip feed line 121, is Wcm.The structure of each array plaster 222 is identical, can be that size is identical
Rectangular patch, the length of the rectangular patch are Lc, are specifically as follows the half of resonance wavelength, width Wc, and adjacent
Rectangular patch space D c can be guide wavelength half or so.
In practical applications, it is designed according to length, the width etc. to all parts such as working frequency of actual antennas,
As a specific example of the invention, when the working frequency of the antenna element is 24GHz, intermediate 211 edge of microstrip line
Gap Sc between two sides and ipsilateral the first earth plate 212 and the second earth plate 213 is about 0.15mm, microstrip feed line 221 with
The width Wcm of intermediate microstrip line 211 is about 0.7mm, and the length Lc of rectangular patch is about 3.3mm, width Wc is about 1.3mm, phase
The space D c of adjacent rectangular patch is about 3.8mm.In addition, the aperture of plated through-hole 214 is about 0.34mm, Jie of medium substrate 130
Electric constant can be 3.4-3.7, and thickness can be 0.508mm, co-planar waveguide component 110, array antenna 120 and back earth plate
140 deposited copper thickness is about 40 μm.
Then, it is emulated using antenna element of the full-wave electromagnetic emulation mode to the specific example.As shown in fig. 7, with
Co-planar waveguide component is the return loss simulation result of feed port are as follows: band of the return loss less than -10dB is wider than 4.5GHz,
Corresponding frequency band is about 20GHz-24.5GHz.As shown in figure 8, with the polarization plane 3 of 24.14GHz frequency point simulation result and pole
Change the directional diagram of plane 4 are as follows: the beam angle of polarization plane 3 is 77.5 °, and the beam angle of polarization plane 4 is 15.2 °, minor lobe
For -13.5dB.
In addition, according to one embodiment of present invention, as shown in figure 9, intermediate microstrip line 211 may include first to third
Section, wherein first to third section width gradually increases, and third section is connected with array antenna 220.
Specifically, the width of microstrip feed line 221 may not just can satisfy the pin widths of MMIC in actual design
The requirement of (0.3mm or less), for example, the width of microstrip feed line 221 is possible to reach 0.7mm, so at this time can be by intermediate micro-strip
Line 211 carries out subsection setup.For example, can divide intermediate microstrip line 211 is three sections, respectively first segment 211a, second segment 211b
With third section 211c, wherein the width Wcm1 of first segment 211a is most wide, such as 0.7mm, the section can directly with 221 phase of microstrip feed line
Even, the width Wcm2 width of second segment 211b reduces, and the width Wcm3 of such as 0.55mm, third section 211c are most narrow, should such as 0.25mm
Section can directly be connected with the tiny pin of MMIC.By the subsection setup, it is easy to be connected with the tiny pin of MMIC, thus is easy to
The same face of medium substrate is set with MMIC, advantageously reduce the usable floor area of medium substrate and reduces the entirety of trailer-mounted radar
Price, and without using the hardware containing wave-guide cavity wave, radar total quality can be reduced.
Therefore, therefore according to the one side embodiment of the above 24GHz frequency range, component provided by the invention is easy to set with MMIC
The same face in medium substrate is set, the usable floor area of millimeter wave dielectric substrate is advantageously reduced and reduces radar overall price；Separately
On the one hand, it since the component is easy to connect with the tiny pin of MMIC, does not need using the metal containing wave-guide cavity wave
Structural member can reduce radar overall weight.
In conclusion antenna element according to an embodiment of the present invention, co-planar waveguide component and array antenna are formed in medium
The same side of substrate, and surface wave guide assembly is connected array antenna together, back earth plate connects at the other side of medium substrate, back
The underface of floor covering co-planar waveguide component and array antenna.The co-planar waveguide component and array antenna of the antenna element are arranged
In the same face of medium substrate, it is easy to be connected with the tiny pin of MMIC, thus is easy to that the same of medium substrate is arranged in MMIC
On one side, it advantageously reduces the usable floor area of millimeter wave dielectric substrate and reduces the overall price of trailer-mounted radar, simultaneously because antenna
Component is easy to connect with the tiny pin of MMIC, thus without using the hardware containing wave-guide cavity wave, thunder can be reduced
Up to total quality.
In addition, the embodiment of the present invention also proposed a kind of trailer-mounted radar comprising above-mentioned antenna element.
As shown in Figure 10, which may include transmitting antenna 10, receiving antenna 20, antenna house 30, transmitter 40, connects
Receipts machine 50, signal processor 60 and interface equipment 70.Wherein, when signal emits, transmitting antenna 10 and transmitter 40 are connected,
Emit signal and reaches detected material generation reflection signal through antenna house 30；When receiving the reflection signal for penetrating antenna house 30,
Receiving antenna 20 and receiver 50 are connected, and signal is after the processing such as 50 High frequency amplification of receiver, mixing, filtering, intermediate frequency amplification
Entering signal processor 60, generates detection signal after the simulation of signal processor 60, Digital Signal Processing, and detection signal is logical
It crosses interface equipment 70 and is sent to other devices.
It should be noted that above-mentioned transmitting antenna 10 and receiving antenna 20 can be antenna element proposed by the present invention.
The trailer-mounted radar of the embodiment of the present invention not only contributes to reduce millimeter medium substrate by above-mentioned antenna element
Usable floor area and reduce the overall price of trailer-mounted radar, can be with and without using the hardware containing wave-guide cavity wave
Reduce radar total quality.
In addition, the embodiment of the present invention also proposed a kind of automobile comprising above-mentioned trailer-mounted radar.
The automobile of the embodiment of the present invention can reduce the overall price of automobile by above-mentioned trailer-mounted radar, while can drop
The complete vehicle quality of low automobile.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship 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 must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (13)
1. a kind of antenna element characterized by comprising
Medium substrate；
It is formed in the co-planar waveguide component of the medium substrate side；
The array antenna for being formed in the medium substrate side and being connected with the co-planar waveguide component；
It is formed in the back earth plate of the medium substrate other side, wherein the back earth plate covers the co-planar waveguide
The underface of component and the array antenna.
2. antenna element as described in claim 1, which is characterized in that the array antenna include at least one microstrip feed line and
Multiple array plasters on the microstrip feed line are set.
3. antenna element as claimed in claim 2, which is characterized in that the microstrip feed line sequentially passes through multiple array patches
The middle line of piece.
4. antenna element as claimed in claim 2, which is characterized in that the multiple array plaster includes the first group pattern patch
With the second group pattern patch, the first group pattern patch is even number and each array plaster is connected to the micro-strip feedback
The side of line, the second group pattern patch is odd number and each array plaster is connected to the another of the microstrip feed line
Side is connected to the array plaster of the microstrip feed line side and is connected to the array plaster of the microstrip feed line other side described in
The length direction of microstrip feed line is arranged alternately.
5. the antenna element as described in any one of claim 2-4, which is characterized in that the co-planar waveguide component includes:
Intermediate microstrip line, the intermediate microstrip line are connected with the microstrip feed line；
The first earth plate and the second earth plate positioned at the intermediate microstrip line two sides.
6. antenna element as claimed in claim 5, which is characterized in that first earth plate and the second earth plate are metal
Plate.
7. antenna element as claimed in claim 6, which is characterized in that the intermediate microstrip line has with first earth plate
First gap has Second gap, the first gap and described the between the intermediate microstrip line and second earth plate
Two gaps it is of same size.
8. antenna element as claimed in claim 6, which is characterized in that on first earth plate and the second earth plate respectively
With multiple plated through-holes, the plated through-hole with the back for connecing first earth plate and the second earth plate respectively
Floor is connected to form the barrier shield of the co-planar waveguide component.
9. antenna element as claimed in claim 2, which is characterized in that the array plaster is rectangular patch, the rectangle patch
The length of piece is the half of resonance wavelength, and the spacing between two neighboring rectangular patch is the half of guide wavelength.
10. antenna element as described in claim 1, which is characterized in that the dielectric constant of the medium substrate is 3.4-3.7.
11. antenna element as claimed in claim 8, which is characterized in that the intermediate microstrip line includes first to third section,
In, described first to third section width gradually increases, and the third section is connected with the array antenna.
12. a kind of trailer-mounted radar, which is characterized in that including such as described in any item antenna elements of claim 1-11.
13. a kind of automobile, which is characterized in that including trailer-mounted radar as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710720042.6A CN109428153A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710720042.6A CN109428153A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
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| CN109428153A true CN109428153A (en) | 2019-03-05 |
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| CN201710720042.6A Pending CN109428153A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
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| CN110098468A (en) * | 2019-04-09 | 2019-08-06 | 惠州市德赛西威智能交通技术研究院有限公司 | Three hair four of one kind receives broad beam antenna |
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| CN110311219A (en) * | 2019-07-18 | 2019-10-08 | 中国电子科技集团公司第三十八研究所 | A kind of series feed micro-strip array antenna and system for millimetre-wave radar |
| CN111755819A (en) * | 2019-03-29 | 2020-10-09 | 通用汽车环球科技运作有限责任公司 | Inverted microstrip traveling wave patch array antenna system |
| CN114665272A (en) * | 2022-02-28 | 2022-06-24 | 福瑞泰克智能系统有限公司 | Microstrip antenna, sensing equipment and parameter determination method of microstrip antenna |
| CN117060049A (en) * | 2023-09-13 | 2023-11-14 | 南京林业大学 | Design method of comb-shaped microstrip antenna of vehicle-mounted millimeter wave radar |
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Application publication date: 20190305 |