CN108196255A - A kind of automobile-used millimetre-wave radar system - Google Patents
A kind of automobile-used millimetre-wave radar system Download PDFInfo
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- CN108196255A CN108196255A CN201810246888.5A CN201810246888A CN108196255A CN 108196255 A CN108196255 A CN 108196255A CN 201810246888 A CN201810246888 A CN 201810246888A CN 108196255 A CN108196255 A CN 108196255A
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- 238000001514 detection method Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 230000000007 visual effect Effects 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000003989 dielectric material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000001808 coupling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 241000736199 Paeonia Species 0.000 description 1
- 235000006484 Paeonia officinalis Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
Abstract
The invention discloses a kind of automobile-used millimetre-wave radar systems.Including dielectric substrate, radar chip, receiving antenna array, the first transmitting antenna array and the second transmitting antenna array, receiving antenna array includes the single-row antenna of multiple row.The quantity of single-row antenna is more than the quantity of single-row antenna in the second transmitting antenna array in first transmitting antenna array, first transmitting antenna array is used to detect the environment in first level visual angle and in the first detection range, second transmitting antenna array is for the environment in the second horizontal view angle of detection and in the second detection range, wherein, first level visual angle is less than the second horizontal view angle, and the first detection range is more than the second detection range.It is achieved thereby that can detect over long distances and in the case of the environment of wide viewing angle, the design of simplified radar system improves integrated level, reduces the cost of radar system.
Description
Technical field
The present embodiments relate to radar system technical field more particularly to a kind of automobile-used millimetre-wave radar systems.
Background technology
Universal with intelligent driving and safe assisting system for automobiles, millimetre-wave radar system is played the role of day
Become important.
Vehicle radar system includes multiple radars, such as the preposition radar for observing Chinese herbaceous peony road conditions, the angle for auxiliary of moving backward
Radar etc..Preposition radar is mainly used for the anti-collision warning in identical track and the environment in observation vehicle front difference track.It is seeing
When surveying the environment in identical track, need to observe larger distance, and in the environment for observing different tracks, need the visual angle observed
It is wider.Therefore, preposition radar needs reach the wider requirement in distant and observation the visual angle that can be observed.
In the prior art, due to the limitation of Antenna Design, long range detection radar can not achieve the wider detection in visual angle, because
This needs to set a long range detection radar and a wide viewing angle detection radar in preposition radar, and cooperation is realized to track ring
The long range in border and the detection of wide viewing angle, but the radar system design is complex, and cost is higher.
Invention content
The present invention provides a kind of automobile-used millimetre-wave radar system, to realize over long distances and in the case of wide viewing angle detection,
Simplify the design of radar system, improve integrated level, reduce the cost of radar system.
In a first aspect, an embodiment of the present invention provides a kind of automobile-used millimetre-wave radar system, including dielectric substrate, radar core
Piece, receiving antenna array, the first transmitting antenna array and the second transmitting antenna array, the receiving antenna array include multiple row list
Array antenna；
The radar chip is fixed on the dielectric substrate, the receiving antenna array, the first transmitting antenna array and
Second transmitting antenna array is printed on the dielectric substrate, and with the radar chip in the same side of the dielectric substrate；
The receiving antenna array, the first transmitting antenna array and the second transmitting antenna array respectively with the radar chip
Connection；
The quantity of single-row antenna is more than single-row day in second transmitting antenna array in first transmitting antenna array
The quantity of line, first transmitting antenna array are used to detect the driving ring in first level visual angle and in the first detection range
Border, second transmitting antenna array are used to detect the environment in the second horizontal view angle and in the second detection range, wherein,
The first level visual angle is less than second horizontal view angle, and first detection range is more than second detection range.
Specifically, the quantity of single-row antenna is greater than or equal to 8 row, second transmitting in first transmitting antenna array
The quantity of single-row antenna is less than or equal to 3 row in aerial array.
Specifically, the quantity of single-row antenna is arranged for 10 in first transmitting antenna array, second launching antenna array
The quantity of single-row antenna is 2 row in row.
Specifically, the receiving antenna array, the first transmitting antenna array and the second transmitting antenna array are by coplanar
It is guided wave structure to be connect with the radar chip.
Specifically, each column institute in the receiving antenna array, the first transmitting antenna array and the second transmitting antenna array
State 16 patch antenna elements that single-row antenna includes concatenation.
Specifically, the width of patch antenna element described in single-row antenna described in each column is by being located at the patch antenna element
The intermediate patch antenna element successively decreases to both sides.
Specifically, first transmitting antenna array and second transmitting antenna array are located at the reception antenna respectively
The both sides or the same side of array.
Specifically, the radar chip includes plurality of passages, single-row antenna described in each column in the receiving antenna array
A channel of the radar chip is corresponded to respectively.
Specifically, the material of the dielectric substrate includes Dielectric Materials at Radio Frequencies.
Specifically, the distance between described single-row antenna of adjacent two row is equal or unequal in the receiving antenna array.
Specifically, side of the dielectric substrate far from the radar chip is printed with the first metal layer, first gold medal
Belong to reference ground of the layer as the automobile-used millimetre-wave radar system.
The present invention in automobile-used millimetre-wave radar system by setting the first transmitting antenna being connect with same radar chip
Array and the second transmitting antenna array, the quantity of single-row antenna is more than in the second transmitting antenna array in the first transmitting antenna array
The quantity of single-row antenna so that the first transmitting antenna array can detect remote environment in narrower range, the second hair
Environment in wider range closely can be detected by penetrating aerial array, it is achieved thereby that can detect over long distances and width regards
In the case of the environment at angle, simplify the design of radar system, improve integrated level, reduce the cost of radar system.
Description of the drawings
Fig. 1 is a kind of structure diagram of automobile-used millimetre-wave radar system provided in an embodiment of the present invention；
Fig. 2 is a kind of directional diagram of the wave beam of first transmitting antenna array transmitting provided in an embodiment of the present invention；
Fig. 3 is a kind of directional diagram of the wave beam of second transmitting antenna array transmitting provided in an embodiment of the present invention；
Fig. 4 is sectional views of the Fig. 1 provided by the invention along A-A ' directions；
Fig. 5 is a kind of structure diagram of single-row antenna provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
Fig. 1 is a kind of structure diagram of automobile-used millimetre-wave radar system provided in an embodiment of the present invention, and the present embodiment can
The situation of long range wide viewing angle detection is applicable to, which includes dielectric substrate 100, radar chip
110th, receiving antenna array 120, the first transmitting antenna array 130 and the second transmitting antenna array 140, receiving antenna array 120
Including the single-row antenna 121 of multiple row.
Radar chip 110 is fixed on dielectric substrate 100, receiving antenna array 120,130 and of the first transmitting antenna array
Second transmitting antenna array 140 is printed on dielectric substrate 100, and with radar chip 110 in the same side of dielectric substrate 100.
Receiving antenna array 120, the first transmitting antenna array 130 and the second transmitting antenna array 140 respectively with radar core
Piece 110 connects.
The quantity of single-row antenna 131 is more than single-row day in the second transmitting antenna array 140 in first transmitting antenna array 130
The quantity of line 141, the first transmitting antenna array 130 are used to detect the driving ring in first level visual angle and in the first detection range
Border, the second transmitting antenna array 140 are used to detect the environment in the second horizontal view angle and in the second detection range, wherein,
First level visual angle is less than the second horizontal view angle, and the first detection range is more than the second detection range, wherein, environment includes it
His vehicle and barrier.
Include controller, transmitter and receiver on radar chip 110, controller controls transmitter to pass through the first transmitting day
130 or second transmitting antenna array 140 of linear array emits millimeter wave, reflects to form echo when millimeter wave encounters barrier, connects
120 receives echo-signal of aerial array is received, and echo-signal is transferred to the receiver on radar chip 110, receiver will return
Wave signal is transferred to controller, orientation and movement velocity of the controller according to where the echo-signal received calculates barrier etc.
Information, so as to fulfill the purpose of detection.Receiving antenna array 120 includes the single-row antenna 121 of multiple row, therefore receiving antenna array
120 have received multigroup echo data, orientation and movement velocity of the controller according to where multigroup echo data calculates barrier etc.
Information improves the accuracy of detection.
140 time division emission signal of first transmitting antenna array 130 and the second transmitting antenna array, i.e., in radar chip 110
Controller control 140 alternate emission signal of the first transmitting antenna array 130 and the second transmitting antenna array, to avoid difference return
Interference between wave signal, and convenient for distinguishing the echo-signal that different transmitting antenna arrays generate.In first transmitting antenna array 130
The quantity of single-row antenna 131 is more than the quantity of single-row antenna 141 in the second transmitting antenna array 140, the first transmitting antenna array
130 in a first direction the antenna element number on x be more than antenna element of second transmitting antenna array 140 in a first direction on x
Number.For example, in Fig. 1, the first transmitting antenna array 130 has 10 list array antennas 131, the second transmitting antenna array 140 has 2
List array antenna 141, therefore in a first direction on x directions, the first transmitting antenna array 130 has 10 antenna elements, the second hair
Penetrating aerial array 140 has 2 antenna elements.In radar system, the antenna is determined in the unit number of the antenna of a direction
Gain and beam angle of the array in this direction.In general, the beam angle d of antenna can be calculated by following equation and be obtained
：λ therein is the wavelength of the signal of transmitting antenna array transmitting, d1 be between antenna element away from
From namely transmitting antenna array in the distance between single-row antenna, n is the number of antenna element in this direction.It can by above formula
Know, when the distance between the wavelength and antenna element of the signal of transmitting antenna array transmitting is constant, antenna list in this direction
The number of member is more, and the beam angle of antenna is narrower.Therefore, wave beam of first transmitting antenna array 130 in a first direction on x is wide
Degree is less than the beam angle on the second transmitting antenna array 140 in a first direction x.In addition, the signal of transmitting antenna array transmitting
Maximum gain it is related to the number of antenna element, the maximum gain G=nG1 of transmitting antenna array, wherein n are in this direction
The number of antenna element, G1 are the gains of each antenna element.It follows that the number of antenna element is more, aerial array exists
Gain in this direction is bigger.Therefore, when the quantity of antenna 131 single-row in the first emission array 130 is more than the second transmitting antenna
In array 140 during the quantity of single-row antenna 141, beam gain of first transmitting antenna array 130 in a first direction on x is big, but
It is that beam angle is narrow；Beam gain of second transmitting antenna array 140 in a first direction on x is small, but beam angle ratio
It is wider.In millimetre-wave radar system, controller control the first transmitting antenna array 130 and the second hair in radar chip 110
It penetrates aerial array 140 and alternately emits signal, millimetre-wave radar system can be made to realize the detection of long range wide viewing angle, and can
Simplify the design of radar system, improve integrated level, reduce the cost of radar system.In addition, the first transmitting antenna array 130 and
Antenna element number of two transmitting antenna arrays 140 on second direction y is equal, therefore the first transmitting antenna array 130 and
Beam gain and beam angle approximately equal of two transmitting antenna arrays 140 on second direction y, first direction x and second party
It is perpendicular to y.
Fig. 2 is a kind of directional diagram of the wave beam of first transmitting antenna array transmitting provided in an embodiment of the present invention, and Fig. 3 is this
The directional diagram of the wave beam of a kind of second transmitting antenna array transmitting that inventive embodiments provide.As shown in Figure 1, Figure 2 and Figure 3,
The quantity of single-row antenna 131 is 10 row in one transmitting antenna array 130, single-row antenna 141 in the second transmitting antenna array 140
Quantity is 2 row.In fig. 2, curve 1301 represent wave beam of first transmitting antenna array 130 in a first direction on x gain and
Beam angle, curve 1302 represent gain and the beam angle of wave beam of first transmitting antenna array 130 on second direction y.
As seen from Figure 2, the gain of the first transmitting antenna array 130 wave beam on x in a first direction is bigger, about 23dBi, wave beam
Width is narrow.In figure 3, curve 1401 represent wave beam of second transmitting antenna array 140 in a first direction on x gain and
Beam angle, curve 1402 represent gain and the beam angle of wave beam of second transmitting antenna array 140 on second direction y.
As seen from Figure 3, beam gain of second transmitting antenna array 140 in a first direction on x is smaller, about 16dBi, and wave beam is wide
Degree is wider.The gain of the wave beam of first transmitting antenna array 130 and the second transmitting antenna array 140 on second direction y and
Beam angle approximately equal.It follows that in same millimetre-wave radar system, the first transmitting antenna array 130 can be used for visiting
Survey remote barrier in narrower range, the barrier that the second transmitting antenna array 140 can be used in detection wider range closely
Hinder object.
The technical solution of the present embodiment, by setting what is connect with same radar chip in automobile-used millimetre-wave radar system
First transmitting antenna array and the second transmitting antenna array, the quantity of single-row antenna is more than the second hair in the first transmitting antenna array
Penetrate the quantity of single-row antenna in aerial array so that the first transmitting antenna array can be detected in narrower range and be driven a vehicle at a distance
Environment, the second transmitting antenna array can detect the environment in wider range closely, it is achieved thereby that can detect
Over long distances and in the case of the environment of wide viewing angle, simplify the design of radar system, improve integrated level, reduce radar system
Cost.
Optionally, the quantity of single-row antenna 131 is greater than or equal to 8 row, the second transmitting day in the first transmitting antenna array 130
The quantity of single-row antenna 141 is less than or equal to 3 row in linear array 140.It is as shown in Figure 1, single-row in the first transmitting antenna array 130
The quantity of antenna 134 is arranged for 10, and the quantity of single-row antenna 141 is 2 row in the second transmitting antenna array 140.
Single-row antenna in the quantity of single-row antenna 131 and the second transmitting antenna array 140 in first transmitting antenna array 130
Gain and width of the quantity with the wave beam on first direction x in 141 is related.Under normal circumstances, automobile-used millimetre-wave radar system
It disclosure satisfy that the detection of environment in driving conditions, therefore the detection range of the first transmitting antenna array 130 and second is sent out
Penetrating the detection visual angle of aerial array 140 needs the distance for meeting safe driving and visual angle, therefore set the first transmitting antenna array
The quantity of single-row antenna 131 is greater than or equal to 8 and arranges in 130, and the quantity of single-row antenna 141 is small in the second transmitting antenna array 140
In or equal to 3 row.On this basis, in order to further ensure that the distance of safe driving and visual angle, the first launching antenna array is set
The quantity of single-row antenna 134 is arranged for 10 in row 130, and the quantity of single-row antenna 141 is 2 row in the second transmitting antenna array 140.
With continued reference to Fig. 1, for the present embodiment on the basis of the various embodiments described above, receiving antenna array 120, first emits day
130 and second transmitting antenna array 140 of linear array is connect by coplanar guided wave structure 150 with radar chip 110.
Under normal circumstances, radar chip 110 is small-sized, and receiving antenna array 120, the first transmitting antenna array
130 and second transmitting antenna array 140 connect with radar chip 110.Radar chip 110 includes plurality of passages, reception antenna
The single-row antenna 121 of each column in array 120 corresponds to a channel of radar chip 110 respectively.It the transmitting of radar chip 110 and connects
The interval for receiving channel is nearer, therefore realizes receiving antenna array using coplanar waveguide structure 150 (i.e. Coplanar stripline)
120th, the connection of the first transmitting antenna array 130 and the second transmitting antenna array 140 and radar chip 110, increase transmitting and
Interval between receiving channel reduces the coupling effect between different single-row antennas.
Because using co-planar waveguide realize radar chip 110 and receiving antenna array 120, the first transmitting antenna array 130 and
The connection of second transmitting antenna array 140, therefore radar chip 110 is fixed on dielectric substrate 100, and receiving antenna array
120th, the first transmitting antenna array 130 and the second transmitting antenna array 140 are then printed on dielectric substrate 100.
With continued reference to Fig. 1, on the basis of the various embodiments described above, the material of dielectric substrate 100 includes Dielectric Materials at Radio Frequencies.
Specifically, the wavelength of automobile-used millimetre-wave radar system transmitted wave is generally in 1-10mm, frequency in 30-300GHz,
For example, the millimeter wave frequency band that automobile can use is mainly 77GHz.The transmitted wave or received wave of automobile-used millimetre-wave radar system are equal
For high-frequency millimeter wave, therefore dielectric substrate 100 is using Dielectric Materials at Radio Frequencies, to reduce dielectric substrate 100 to signal energy
Loss.
Fig. 4 is sectional views of the Fig. 1 provided by the invention along A-A ' directions, on the basis of the various embodiments described above, medium base
Side of the piece 100 far from radar chip 110 is printed with the first metal layer 150, and the first metal layer 150 is used as automobile-used millimetre-wave radar
The reference ground of system.
As shown in figure 4, the side 101 of dielectric substrate 100 is fixed with radar chip, in dielectric substrate 100 far from radar core
The side 102 of piece is printed on the first metal layer 150.There are multiple metallization VIAs 160 on dielectric substrate 100, the first metal layer 150 is logical
The ground terminal for crossing metallization VIA 160 and automobile-used millimetre-wave radar system realizes connection, and the first metal layer 150 is used as automobile-used millimeter
The reference ground of wave radar system.
The present embodiment is on the basis of the various embodiments described above, the first transmitting antenna array 130 and the second transmitting antenna array
140 are located at the both sides or the same side of receiving antenna array 120 respectively.
The position relationship of first transmitting antenna array 130 and the second transmitting antenna array 140 and receiving antenna array 120 can
The factor designs such as the size and actual needs of the dielectric substrate 100 in automobile-used millimetre-wave radar system.Under normal circumstances,
One transmitting antenna array 130 and the second transmitting antenna array 140 are located at the both sides of receiving antenna array 120 respectively, in medium base
It is easily laid out on piece 100, and the transmission channel of radar chip 110 can realize the interval of bigger, reduces different single-row days
Coupling effect between line.
The present embodiment on the basis of the various embodiments described above, in receiving antenna array 120 adjacent two lists array antenna 121 it
Between distance it is equal or unequal.
Specifically, receiving antenna array 120 includes the distance between the single-row antenna 121 of multiple row, adjacent single-row antenna 121
Can be equal, it can not also be equal.The distance between adjacent single-row antenna 121 is equal, and receiving antenna array 120 uniformly divides
Cloth, 120 occupied space of receiving antenna array is smaller at this time, but the ratio of precision during relative angle of resolving barrier and radar
It is relatively low；The distance between adjacent single-row antenna 121 is unequal, needs to occupy using not equidistant receiving antenna array 120
The space of bigger, but it resolves the precision higher of the relative angle of barrier and radar.
Optionally, mutiple antennas unit can be set on above-mentioned each list array antenna, and wherein antenna element can be patch day
Line unit.Illustratively, Fig. 5 be a kind of structure diagram of single-row antenna provided in an embodiment of the present invention, receiving antenna array,
The single-row antenna of each column in first transmitting antenna array and the second transmitting antenna array includes 16 patch antenna elements of concatenation.
The width W of patch antenna element is by being located at the patch antenna element among patch antenna element in the single-row antenna of each column
Successively decrease to both sides, can cause the electric current of the millimeter wave above patch antenna element that Taylor's distribution is presented, so as to reduce millimeter wave
The secondary lobe of waveform, while reflection of the reverberation on other directions to millimeter wave can be inhibited.
Illustratively, as shown in figure 5, single-row antenna includes 16 patch antenna elements 1201 of series connection, different patch days
The width W of line unit 1201 can be differed, and length L can also be differed, and table 1 is the single-row antenna of each column in the first transmitting antenna array
The size of upper patch antenna element 1201, as shown in table 1, the 8th He in 16 patch antenna elements 1201 on single-row antenna
The width W of 9th patch antenna element 1201 is maximum, and successively decreases to the both sides of single-row antenna, the 1st patch antenna element 1201
It is minimum with the width W of the 16th patch antenna element 1201.And with the position among the 8th and the 9th patch antenna element 1201
Symmetry axis is set to, the width W of the symmetrical patch antenna element 1201 in both sides is equal, i.e., the patch antenna element in single-row antenna
The degree that 1201 width W successively decreases from intermediate patch antenna element 1201 to both sides is identical.Using the patch of this width W gradual changes
Millimeter wave in the automobile-used millimetre-wave radar system of single-row antenna transmission that chip antenna unit 1201 is formed, can reduce millimeter wave direction
Secondary lobe in figure, and then the transmission performance of single-row antenna is promoted, so as to reduce automobile-used millimetre-wave radar system detectable range
Outer interference.
The size (millimeter) of the 1 first single-row antenna of transmitting antenna array of table
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
| W | 0.38 | 0.43 | 0.61 | 0.81 | 1.02 | 1.20 | 1.32 | 1.40 | 1.40 | 1.32 | 1.20 | 1.02 | 0.81 | 0.61 | 0.43 | 0.38 |
| L | 1.16 | 1.15 | 1.12 | 1.09 | 1.07 | 1.06 | 1.06 | 1.06 | 1.06 | 1.06 | 1.06 | 1.07 | 1.09 | 1.12 | 1.15 | 1.16 |
Table 1 is only a kind of example of the first transmitting antenna array, and 1 to 16 is the number of patch antenna element.In addition, this hair
The single-row antenna in receiving antenna array and the second transmitting antenna array in bright may be used in the single-row antenna shown in table 1
The structure of patch antenna element.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (11)
1. a kind of automobile-used millimetre-wave radar system, which is characterized in that including dielectric substrate, radar chip, receiving antenna array,
One transmitting antenna array and the second transmitting antenna array, the receiving antenna array include the single-row antenna of multiple row；
The radar chip is fixed on the dielectric substrate, the receiving antenna array, the first transmitting antenna array and second
Transmitting antenna array is printed on the dielectric substrate, and with the radar chip in the same side of the dielectric substrate；
The receiving antenna array, the first transmitting antenna array and the second transmitting antenna array connect respectively with the radar chip
It connects；
The quantity of single-row antenna is more than single-row antenna in second transmitting antenna array in first transmitting antenna array
Quantity, first transmitting antenna array are used to detect the environment in first level visual angle and in the first detection range, institute
State the second transmitting antenna array for detect the second horizontal view angle in and the second detection range in environment, wherein, it is described
First level visual angle is less than second horizontal view angle, and first detection range is more than second detection range.
2. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that in first transmitting antenna array
The quantity of single-row antenna is greater than or equal to 8 and arranges, and the quantity of single-row antenna is less than or equal to 3 in second transmitting antenna array
Row.
3. automobile-used millimetre-wave radar system according to claim 2, which is characterized in that in first transmitting antenna array
The quantity of single-row antenna is arranged for 10, and the quantity of single-row antenna is 2 row in second transmitting antenna array.
4. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that the receiving antenna array, first
Transmitting antenna array and the second transmitting antenna array guided wave structure are connect by coplanar with the radar chip.
5. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that the receiving antenna array, first
Single-row antenna described in each column in transmitting antenna array and the second transmitting antenna array includes 16 patch antenna elements of concatenation.
6. automobile-used millimetre-wave radar system according to claim 5, which is characterized in that described in each column described in single-row antenna
The width of patch antenna element is successively decreased from being located at the patch antenna element among the patch antenna element to both sides.
7. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that first transmitting antenna array and
Second transmitting antenna array is located at the both sides or the same side of the receiving antenna array respectively.
8. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that the radar chip includes a plurality of logical
Road, single-row antenna described in each column in the receiving antenna array correspond to a channel of the radar chip respectively.
9. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that the material of the dielectric substrate includes
Dielectric Materials at Radio Frequencies.
10. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that phase in the receiving antenna array
The distance between the two row single-row antenna of neighbour is equal or unequal.
11. automobile-used millimetre-wave radar system according to claim 1, which is characterized in that the dielectric substrate is far from described
The side of radar chip is printed with the first metal layer, reference of the first metal layer as the automobile-used millimetre-wave radar system
Ground.
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| CN201810246888.5A CN108196255A (en) | 2018-03-23 | 2018-03-23 | A kind of automobile-used millimetre-wave radar system |
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| CN201810246888.5A CN108196255A (en) | 2018-03-23 | 2018-03-23 | A kind of automobile-used millimetre-wave radar system |
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| CN109358322A (en) * | 2018-10-25 | 2019-02-19 | 森思泰克河北科技有限公司 | Forward direction target detection radar and method |
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| CN110208749A (en) * | 2019-06-21 | 2019-09-06 | 清能华波（北京）科技有限公司 | Reusable Automobile Millimeter Wave Radar aerial array |
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| US11340329B2 (en) | 2018-12-07 | 2022-05-24 | Apple Inc. | Electronic devices with broadband ranging capabilities |
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| CN110988882A (en) * | 2019-10-31 | 2020-04-10 | 惠州市德赛西威汽车电子股份有限公司 | 77GHz sparse array automobile anti-collision radar receiving antenna |
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| CN112578353A (en) * | 2020-02-28 | 2021-03-30 | 加特兰微电子科技(上海)有限公司 | Device and method for measuring target angle, sensor and equipment |
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