CN109428154A - Antenna element, trailer-mounted radar and automobile - Google Patents
Antenna element, trailer-mounted radar and automobile Download PDFInfo
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- CN109428154A CN109428154A CN201710720044.5A CN201710720044A CN109428154A CN 109428154 A CN109428154 A CN 109428154A CN 201710720044 A CN201710720044 A CN 201710720044A CN 109428154 A CN109428154 A CN 109428154A
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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
- H01Q1/36—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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
Abstract
The invention discloses a kind of antenna element, trailer-mounted radar and automobile, the antenna element includes: medium substrate；The impedance for being formed in medium substrate side adjusts component；It is formed in medium substrate side and adjusts the array antenna that component is connected with impedance；The beam angle for being formed in medium substrate side adjusts component, and beam angle adjusts component and is arranged around array antenna；It is formed in the back earth plate of the medium substrate other side, wherein back earth plate covers impedance and adjusts the underface that component, array antenna and beam angle adjust component.The impedance of the antenna element adjusts component and the same face of medium substrate is arranged in array antenna, can easily be accommodated to obtain 50 ohmages, can be conveniently applied to 24GHz trailer-mounted radar without using large-sized standard waveguide feeding interface.
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 of above-mentioned micro-strip comb arrays antenna includes 77GHz trailer-mounted radar, nevertheless, being usually used in trailer-mounted radar
Millimeter wave frequency band further include 24GHz, 24GHz trailer-mounted radar is answered extensively since compared with 77GHz trailer-mounted radar, cost is relatively low for it
Vehicle for low to medium price level.Since the size of standard waveguide feeding interface is inversely proportional with millimeter-wave frequency, when above-mentioned
Micro-strip comb arrays antenna applications will lead to the standard waveguide feeding interface used when 24GHz trailer-mounted radar can not make greatly very much
With.
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 impedance adjusting component and array antenna of the antenna element are arranged in medium base
The same face of plate can easily be accommodated to obtain 50 ohmages, can be conveniently applied to 24GHz trailer-mounted radar without using big ruler
Very little standard waveguide feeding interface, while the beam angle being arranged adjusts component and is conducive to provide bigger beam area, in turn
Be conducive to the side front vehicle that the trailer-mounted radar comprising this component detects larger range of azimuth, farther place, be conducive to shift to an earlier date
Dangerous warning of the side front vehicle close to movement is provided for the driver of reversing vehicle, and then improves the safety of vehicle backing
Property.
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；
The impedance for being formed in the medium substrate side adjusts component；Be formed in the medium substrate side and with the impedance adjusting group
The connected array antenna of part；The beam angle for being formed in the medium substrate side adjusts component, the beam angle adjusting group
Part is arranged around the array antenna；It is formed in the back earth plate of the medium substrate other side, wherein the back ground connection
Plate covers the impedance and adjusts the underface that component, the array antenna and the beam angle adjust component.
Antenna element according to an embodiment of the present invention, impedance adjust component, array antenna and beam angle and adjust component shape
At in the same side of medium substrate, and impedance adjusts component and is connected with array antenna, and beam angle adjusting component is around array day
Line setting, back earth plate cover impedance and adjust component, array antenna and wave in the other side of medium substrate, back earth plate
The underface of beam width adjusting component.The impedance of the antenna element adjusts component and the same of medium substrate is arranged in array antenna
Face can easily be accommodated to obtain 50 ohmages, can be conveniently applied to 24GHz trailer-mounted radar without using large-sized standard
Waveguide feed interface, while the beam angle being arranged adjusts component and is conducive to provide bigger beam area, and then is conducive to wrap
Trailer-mounted radar containing this component detects the side front vehicle of larger range of azimuth, farther place, is conducive in advance as reversing vehicle
Driver dangerous warning of the side front vehicle close to movement is provided, and then improve the safety of vehicle backing.
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, it includes: starting microstrip line that the impedance, which adjusts component,；It is connected to the starting
Gradual change microstrip line between microstrip line and the array antenna.
According to one embodiment of present invention, the array antenna includes: at least one to be connected with the gradual change microstrip line
A microstrip feed line；The multiple array plasters being connected at least one described microstrip feed line.
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 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, width of the width of the gradual change microstrip line relative to the starting microstrip line
In being gradually reduced trend.
According to one embodiment of present invention, the dielectric constant of the medium substrate is 3.7-3.9.
According to one embodiment of present invention, it includes: that beam angle adjusts metal tape that the beam angle, which adjusts component,；Position
Multiple beam angles on metal tape are adjusted in the beam angle and adjust metal aperture, wherein the beam angle adjusts gold
Belong to hole to be connected with the back earth plate.
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 can be conveniently applied to the vehicle-mounted thunder of 24GHz by above-mentioned antenna element
Up to without using large-sized standard waveguide feeding interface, while it being conducive to provide bigger beam area, and then be conducive to
Trailer-mounted radar comprising this component detects the side front vehicle of larger range of azimuth, farther place, is conducive in advance as reversing
The driver of vehicle provides dangerous warning of the side front vehicle close to movement, and then improves the safety of vehicle backing.
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 detect larger range of azimuth, farther place by above-mentioned trailer-mounted radar
Side front vehicle, be conducive to the dangerous warning for providing side front vehicle close to movement for the driver of reversing vehicle in advance, into
And improve the safety of vehicle backing.
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 that impedance according to an embodiment of the invention adjusts component；
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 that the impedance magnitude simulation result of the full-wave electromagnetic emulation of antenna element according to an embodiment of the invention shows
It is intended to；
Fig. 6 is the full-wave electromagnetic emulation of the antenna element according to an embodiment of the invention that component is adjusted not comprising impedance
Impedance magnitude simulation result schematic diagram；
Fig. 7 is the structural schematic diagram of antenna element in accordance with another embodiment of the present invention；
Fig. 8 is the polarization unilateral 1 and polarization of the full-wave electromagnetic emulation of antenna element in accordance with another embodiment of the present invention
The Direction Pattern Simulation result schematic diagram of plane 2；
Fig. 9 is the full-wave electromagnetic of the antenna element according to an embodiment of the invention that component is adjusted not comprising beam angle
The polarization unilateral 1 of emulation and the Direction Pattern Simulation result schematic diagram of polarization plane 2；
Figure 10 is that 1 beam angle of polarization plane of antenna element according to an embodiment of the invention is applied to automobile rear
The azimuth schematic diagram of trailer-mounted radar detection rear automobile；And
Figure 11 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 impedance tune for being formed in 130 side of medium substrate
Section component 110 is formed in 130 side of medium substrate and adjusts the array antenna 120 and be formed in Jie that component 110 is connected with impedance
The back earth plate 140 of 130 other side of matter substrate.Wherein, back earth plate 140 covers impedance and adjusts component 110 and array day
The underface of line 120.
According to one embodiment of present invention, as shown in Figure 1, impedance adjusts component 110 can include: starting microstrip line 111
And the gradual change microstrip line 112 being connected between starting microstrip line 111 and array antenna 120.
Further, the width of gradual change microstrip line 112 is in be gradually reduced trend relative to the width of starting microstrip line 111.
According to one embodiment of present invention, as shown in Figure 1, array antenna 120 can include: with 112 phase of gradual change microstrip line
At least one microstrip feed line 121 even and the multiple array plasters 122 being connected at least one microstrip feed line 121.
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.
Further, multiple array plasters 122 include the first group pattern patch and the second group pattern patch, the first group pattern
Patch can be for even number and each array plaster 122 is connected to the side of microstrip feed line 121, and the second group pattern patch can be
Odd number and each array plaster 122 are connected to the other side of microstrip feed line 121, are connected to the array of 121 side of microstrip feed line
Patch 122 and the array plaster 122 for being connected to 121 other side of microstrip feed line are arranged alternately along the length direction of microstrip feed line 121.
Wherein, the number of multiple array plasters can be demarcated according to the actual situation, for example, multiple array plasters 122 can be 11
Rectangular patch, wherein the first group pattern patch may include 6 rectangular patches, and the second group pattern patch may include 5 rectangle patches
Piece.
Specifically, as shown in Figure 1, the 120 of impedance adjusting component 110, array antenna are being arranged in medium substrate 130 just
Face, back earth plate 140 are arranged in the back side of medium substrate 130, and cover impedance adjust component 110, array antenna 120
Underface.
Wherein, it includes starting microstrip line 111 and gradual change microstrip line 112, gradual change microstrip line 112 1 that impedance, which adjusts component 110,
End is connected with starting microstrip line 111, and the other end is connected with array antenna 120.
Array antenna 120 includes a microstrip feed line 121 and multiple array plasters 122, the number of specific array plaster 122
Can determine according to actual needs, for example, 11, it is two groups that 11 array plasters 122, which are divided to, and the first group pattern patch may include 6
Array plaster 122, the second group pattern patch may include 5 array plasters 122,6 array plasters 122 of the first group pattern patch
It is consecutively connected to the side of microstrip feed line 121,5 array plasters 122 of the second group pattern patch are consecutively connected to microstrip feed line
121 other side.The structure of each array plaster 122 is identical, can be the identical rectangular patch of size, the length of the rectangular patch
Degree is Lc, and the space D c for being specifically as follows the half of resonance wavelength, width Wc, and adjacent rectangular patch can be
Half of guide wavelength or so.
As shown in Fig. 2, one end connection starting microstrip line 111 of gradual change microstrip line 112, the other end of gradual change microstrip line 112
Connect microstrip feed line 121.Originate a length of Lt1, the width Wt of microstrip line 111, a length of Lt2 of gradual change microstrip line 112, gradual change micro-strip
The width of line 112 is gradually smaller, and one end most width being connected with starting microstrip line 111 is Wt, the one end being connected with microstrip feed line 121
It is most narrow and with microstrip feed line 121 it is of same size be Wcm, i.e., gradual change microstrip line 112 be a trapezoidal gradual change microstrip line.Gradual change micro-strip
Line 112 arrives a length of Lcm of the microstrip feed line 121 of nearest rectangular patch.
In practical applications, it is designed according to length, the width etc. to all parts such as working frequency of antenna, as
One specific example, when the working frequency of the antenna element is 24GHz, the length Lt1 of starting microstrip line 111 is about 3.2mm,
The width Wt for originating microstrip line 111 is about 0.7mm, and the length Lt2 of gradual change microstrip line 112 is about 1mm, the width of microstrip feed line 121
Spending Wcm is about 0.41mm, and the length Lc of rectangular patch is about 3.2mm, width Wc is about 1.3mm, the spacing of adjacent rectangle patch
Dc is about 3.87mm, adjusts the nearest rectangular patch of component 110 from impedance and impedance adjusts the gradual change microstrip line 112 of component 110
The spacing Lcm of end be 2.9mm, in addition, the dielectric constant of medium substrate 130 can be 3.4-3.7, thickness can be
0.508mm, the deposited copper thickness that impedance adjusts component 110, array antenna 120 and back earth plate 140 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 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 4.7GHz,
Corresponding frequency band is about 20GHz-24.7GHz.As shown in figure 4, with the polarization plane 1 of 24.15GHz center frequency point simulation result
With the directional diagram of polarization plane 2 are as follows: the beam angle of polarization plane 1 is 85 °, and the beam angle of polarization plane 2 is 15 °, minor lobe
For -13.1dB.
As shown in figure 5, the simulation result of the impedance magnitude to the antenna element are as follows: the impedance magnitude wave of 20GHz-24GHz
The impedance magnitude fluctuation range that dynamic range is about 38 Ω -73 Ω, 24GHz-24.3GHz is about 50 Ω -54 Ω.And work as no impedance
When adjusting component 110, i.e. Wcm=Wt is about 0.7mm, as shown in fig. 6, the simulation result of the impedance magnitude to antenna element (returns
Bandwidth of the wave loss less than -10dB is about 4.5GHz) are as follows: the impedance magnitude fluctuation range of 20GHz-24GHz is about 32 Ω -82
The impedance magnitude fluctuation range of Ω, 24GHz-24.3GHz are about 61 Ω -38 Ω.
As the above analysis, 24GHz-24.3GHz fluctuation range very little can be obtained by adjusting component by setting impedance
50 ohmages, impedance fluctuations range is small, radar signal is more stable.
Therefore, the impedance of antenna element of the invention adjusts component and the same face of medium substrate is arranged in array antenna,
It can easily be accommodated to obtain 50 ohmages, 24GHz trailer-mounted radar can be conveniently applied to without using large-sized standard wave
Lead feeding interface.
Fig. 7 is the structural schematic diagram of antenna element in accordance with another embodiment of the present invention.
As shown in fig. 7, the antenna element can include: medium substrate 240, the impedance tune for being formed in 240 side of medium substrate
Section component 210, is formed in Jie at the array antenna 220 for being formed in 240 side of medium substrate and being connected with impedance adjusting component 210
The back earth plate 250 that the beam angle of 240 side of matter substrate adjusts component 230 and is formed in 240 other side of medium substrate.Its
In, beam angle adjusts component 230 and is arranged around array antenna 220, and back earth plate 250 covers impedance and adjusts component 210, battle array
Array antenna 220 and beam angle adjust the underface of component 230.
According to one embodiment of present invention, as shown in fig. 7, impedance adjusts component 210 can include: starting microstrip line 211
And the gradual change microstrip line 212 being connected between starting microstrip line 211 and array antenna 220.
Further, the width of gradual change microstrip line 212 is in be gradually reduced trend relative to the width of starting microstrip line 211.
According to one embodiment of present invention, as shown in fig. 7, array antenna 220 can include: with 212 phase of gradual change microstrip line
At least one microstrip feed line 221 even and the multiple array plasters 222 being connected at least one microstrip feed line 221.
According to one embodiment of present invention, array plaster 222 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.
Further, multiple array plasters 222 include the first group pattern patch and the second group pattern patch, the first group pattern
Patch can be for even number and each array plaster 222 is connected to the side of microstrip feed line 221, and the second group pattern patch can be
Odd number and each array plaster 222 are connected to the other side of microstrip feed line 221, are connected to the array of 221 side of microstrip feed line
Patch 222 and the array plaster 222 for being connected to 221 other side of microstrip feed line are arranged alternately along the length direction of microstrip feed line 221.
Wherein, the number of multiple array plasters can be demarcated according to the actual situation, for example, multiple array plasters 222 can be 11
Rectangular patch, wherein the first group pattern patch can be 6 rectangular patches, and the second group pattern patch can be 5 rectangle patches
Piece.
According to one embodiment of present invention, as shown in fig. 7, beam angle adjusts component 230 can include: beam angle tune
The multiple beam angles for saving metal tape 231 and being adjusted on metal tape 231 positioned at beam angle adjust metal aperture 232, wherein wave
Beam width adjusts metal aperture 232 and is connected with back earth plate 250.
Specifically, as shown in fig. 7, impedance adjusts component 210, the 220 of array antenna, beam angle adjusting component 230
The front of medium substrate 240 is set, and the back side of medium substrate 240 is arranged in back earth plate 250, and covers impedance adjusting group
Part 210, the 220 of array antenna, beam angle adjust component 230 underface.
Wherein, it includes starting microstrip line 211 and gradual change microstrip line 212, gradual change microstrip line 212 1 that impedance, which adjusts component 210,
End is connected with starting microstrip line 211, and the other end is connected with array antenna 220.
Array antenna 220 includes a microstrip feed line 221 and multiple array plasters 222, the number of specific array plaster 222
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 may include 6
Array plaster 222, the second group pattern patch may include 5 array plasters 222,6 array plasters 222 of the first group pattern patch
It is consecutively connected to the side of microstrip feed line 221,5 array plasters 222 of the second group pattern patch are consecutively connected to microstrip feed line
221 other side.The structure of each array plaster 222 is identical, can be the identical rectangular patch of size, the length of the rectangular patch
Degree is Lc, and the space D c for being specifically as follows the half of resonance wavelength, width Wc, and adjacent rectangular patch can be
Half of guide wavelength or so.
It includes that beam angle adjusts metal tape 231 and multiple beam angles adjusting metal aperture that beam angle, which adjusts component 230,
232, the number that specific beam angle adjusts metal aperture 232 can determine according to actual needs, and beam angle adjusts metal tape 231 and encloses
Around array antenna 220, beam angle adjusts metal aperture 232 and passes through medium substrate 240 and connect beam angle adjusting metal tape 231
With back earth plate 250.
In practical applications, it is designed according to length, the width etc. to all parts such as working frequency of antenna, as
One specific example, when the working frequency of the antenna element is 24GHz, the length Lt1 of starting microstrip line 211 is about 3.5mm,
The width Wt for originating microstrip line 211 is about 0.7mm, and the length Lt2 of gradual change microstrip line 212 is about 1mm, the width of microstrip feed line 221
Spending Wcm is about 0.4mm, and the length Lc of rectangular patch is about 3.2mm, width Wc is about 1.14mm, the spacing of adjacent rectangle patch
Dc is about 3.92mm, adjusts the nearest rectangular patch of component 210 from impedance and impedance adjusts the starting microstrip line 211 of component 210
The space D p of end be about 3.57mm.In addition, the dielectric constant of medium substrate 240 can be 3.7-3.9, thickness can be
0.508mm, the width that beam angle adjusts metal tape 231 is about 0.35mm, and the aperture that beam angle adjusts metal aperture 232 is about
0.2mm, impedance adjust the deposited copper thickness that component 210, array antenna 220, beam angle adjust component 230 and back earth plate 250
About 40 μm of degree.
Then, it is emulated using antenna element of the full-wave electromagnetic emulation mode to the specific example.As shown in figure 8, with
The polarization plane 1 of 24.14GHz center frequency point simulation result and the directional diagram of polarization plane 2 are as follows: the beam angle of polarization plane 1
It is 104.5 °, the beam angle of polarization plane 2 is 14.6 °, minor lobe is -12.7dB.
In order to verify the embodiment of the present invention antenna element practicability, when antenna element does not include beam angle adjusting group
When part 230, emulated using antenna element of the full-wave electromagnetic emulation mode to the specific example.As shown in figure 9, with
The polarization plane 1 of 24.14GHz center frequency point simulation result and the directional diagram of polarization plane 2 are as follows: the beam angle of polarization plane 1
It is 90 °.
Comparison diagram 8 and Fig. 9 are it is found that the beam angle of the polarization plane 1 in Fig. 8 is 104.5 °, the polarization in the Fig. 9 that compares
90 ° of beam angle in plane 1, increases 14.5 °.
As shown in Figure 10, it will be applied to be backing out from parking lot comprising the trailer-mounted radar of antenna element shown in Fig. 7 and stop
The rear portion of the automobile 1 of parking stall is detected using the wave beam of polarization plane 1 at this time with detecting the close movement of side rear automobile 2 and 3
The azimuth of side rear automobile 2 and 3, it will be apparent that, 104.5 ° of wave beams of the polarization plane 1 of the antenna element of the embodiment of the present invention are wide
It spends (solid arrow range in Fig. 8) and compares 90 ° of beam angles (dotted arrow range in Fig. 9), be conducive to detect larger range of
The side rear automobile 2 and 3 at azimuth, farther place, and then be conducive to provide side rear automobile in advance for the driver of automobile 1 close
The dangerous warning of movement, and then improve the safety of the reversing of automobile 1.
In conclusion antenna element according to an embodiment of the present invention, impedance adjusts component, array antenna and beam angle tune
Section component is formed in the same side of medium substrate, and impedance adjusts component and is connected with array antenna, and beam angle adjusts component and encloses
It is arranged around array antenna, back earth plate covers impedance and adjust component, array day in the other side of medium substrate, back earth plate
Line and beam angle adjust the underface of component.The impedance of the antenna element adjusts component and array antenna is arranged in medium base
The same face of plate can easily be accommodated to obtain 50 ohmages, can be conveniently applied to 24GHz trailer-mounted radar without using big ruler
Very little standard waveguide feeding interface, while the beam angle being arranged adjusts component and is conducive to provide bigger beam area, in turn
Be conducive to the side front vehicle that the trailer-mounted radar comprising this component detects larger range of azimuth, farther place, be conducive to shift to an earlier date
Dangerous warning of the side front vehicle close to movement is provided for the driver of reversing vehicle, and then improves the safety of vehicle backing
Property.
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 11, 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 can be conveniently applied to the vehicle-mounted thunder of 24GHz by above-mentioned antenna element
Up to without using large-sized standard waveguide feeding interface, meanwhile, it is conducive to provide bigger beam area, and then be conducive to
Trailer-mounted radar comprising this component detects the side front vehicle of larger range of azimuth, farther place, is conducive in advance as reversing
The driver of vehicle provides dangerous warning of the side front vehicle close to movement, and then improves the safety of vehicle backing.
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 detect larger range of azimuth, farther place by above-mentioned trailer-mounted radar
Side front vehicle, be conducive to the dangerous warning for providing side front vehicle close to movement for the driver of reversing vehicle in advance, into
And improve the safety of vehicle backing.
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 (10)
1. a kind of antenna element characterized by comprising
Medium substrate；
The impedance for being formed in the medium substrate side adjusts component；
It is formed in the medium substrate side and adjusts the array antenna that component is connected with the impedance；
The beam angle for being formed in the medium substrate side adjusts component, and the beam angle adjusts component and surrounds the array
Antenna setting；
It is formed in the back earth plate of the medium substrate other side, wherein the back earth plate covers the impedance and adjusts
Component, the array antenna and the beam angle adjust the underface of component.
2. antenna element as described in claim 1, which is characterized in that the impedance adjusts component and includes:
Originate microstrip line；
The gradual change microstrip line being connected between the starting microstrip line and the array antenna.
3. antenna element as claimed in claim 2, which is characterized in that the array antenna includes:
At least one microstrip feed line being connected with the gradual change microstrip line；
The multiple array plasters being connected at least one described microstrip feed line.
4. antenna element as claimed in claim 3, 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.
5. antenna element as claimed in claim 3, 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.
6. antenna element as claimed in claim 2, which is characterized in that the width of the gradual change microstrip line is relative to the starting
The width of microstrip line is in be gradually reduced trend.
7. antenna element as described in claim 1, which is characterized in that the dielectric constant of the medium substrate is 3.7-3.9.
8. such as the described in any item antenna elements of claim 1-7, which is characterized in that the beam angle adjusts component and includes:
Beam angle adjusts metal tape；
Multiple beam angles on metal tape are adjusted positioned at the beam angle and adjust metal aperture, wherein the beam angle
Metal aperture is adjusted to be connected with the back earth plate.
9. a kind of trailer-mounted radar, which is characterized in that including such as described in any item antenna elements of claim 1-8.
10. a kind of automobile, which is characterized in that including trailer-mounted radar as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720044.5A CN109428154A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710720044.5A CN109428154A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
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| CN109428154A true CN109428154A (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710720044.5A Pending CN109428154A (en) | 2017-08-21 | 2017-08-21 | Antenna element, trailer-mounted radar and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003158423A (en) * | 2001-11-21 | 2003-05-30 | Mitsubishi Electric Corp | Array antenna system |
| JP2012029293A (en) * | 2010-07-22 | 2012-02-09 | Toyota Motor Engineering & Manufacturing North America Inc | Microwave antenna |
| CN102723593A (en) * | 2012-06-11 | 2012-10-10 | 北京航空航天大学 | Log periodic microstrip antenna of single-layer printed circuit structure |
| JP2013088364A (en) * | 2011-10-20 | 2013-05-13 | Furukawa Electric Co Ltd:The | Antenna apparatus |
| US20140078005A1 (en) * | 2011-05-23 | 2014-03-20 | Ace Technologies Corporation | Radar array antenna using open stubs |
| JP2015136110A (en) * | 2014-01-16 | 2015-07-27 | ハネウェル・インターナショナル・インコーポレーテッド | Regular interval multi-path elimination antenna array |
| JP2015171019A (en) * | 2014-03-07 | 2015-09-28 | 日本ピラー工業株式会社 | antenna |
| CN205264857U (en) * | 2015-12-24 | 2016-05-25 | 北京理工雷科电子信息技术有限公司 | Millimeter wave microstrip pectination array antenna |
| CN206364178U (en) * | 2016-12-09 | 2017-07-28 | 安徽四创电子股份有限公司 | A kind of micro-strip array antenna |
| CN206364177U (en) * | 2016-12-09 | 2017-07-28 | 安徽四创电子股份有限公司 | A kind of series feed micro-strip array antenna |
-
2017
- 2017-08-21 CN CN201710720044.5A patent/CN109428154A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003158423A (en) * | 2001-11-21 | 2003-05-30 | Mitsubishi Electric Corp | Array antenna system |
| JP2012029293A (en) * | 2010-07-22 | 2012-02-09 | Toyota Motor Engineering & Manufacturing North America Inc | Microwave antenna |
| US20140078005A1 (en) * | 2011-05-23 | 2014-03-20 | Ace Technologies Corporation | Radar array antenna using open stubs |
| JP2013088364A (en) * | 2011-10-20 | 2013-05-13 | Furukawa Electric Co Ltd:The | Antenna apparatus |
| CN102723593A (en) * | 2012-06-11 | 2012-10-10 | 北京航空航天大学 | Log periodic microstrip antenna of single-layer printed circuit structure |
| JP2015136110A (en) * | 2014-01-16 | 2015-07-27 | ハネウェル・インターナショナル・インコーポレーテッド | Regular interval multi-path elimination antenna array |
| JP2015171019A (en) * | 2014-03-07 | 2015-09-28 | 日本ピラー工業株式会社 | antenna |
| CN205264857U (en) * | 2015-12-24 | 2016-05-25 | 北京理工雷科电子信息技术有限公司 | Millimeter wave microstrip pectination array antenna |
| CN206364178U (en) * | 2016-12-09 | 2017-07-28 | 安徽四创电子股份有限公司 | A kind of micro-strip array antenna |
| CN206364177U (en) * | 2016-12-09 | 2017-07-28 | 安徽四创电子股份有限公司 | A kind of series feed micro-strip array antenna |
Non-Patent Citations (2)
| Title |
|---|
| L. ZHANG, W. ZHANG AND Y. P. ZHANG: "Microstrip Grid and Comb Array Antennas", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| 王鼎等: "《无线电测向与定位理论及方法》", 30 June 2016 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |