CN110120582A - Wide angle covers antenna - Google Patents
Wide angle covers antenna Download PDFInfo
- Publication number
- CN110120582A CN110120582A CN201910110306.5A CN201910110306A CN110120582A CN 110120582 A CN110120582 A CN 110120582A CN 201910110306 A CN201910110306 A CN 201910110306A CN 110120582 A CN110120582 A CN 110120582A
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- CN
- China
- Prior art keywords
- conductive
- antenna assembly
- plaster
- electricity
- electricity conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H01Q1/36—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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
Illustrated examples antenna assembly (20) includes substrate (22), the transmission line (24) being supported on substrate (22) and the multiple Electricity conductive plasters (26) being supported on substrate (22).Each Electricity conductive plaster has the second end (30) of the first end (28) for being connected to transmission line (24) and ground connection.Multiple Electricity conductive plasters (26) are arranged to include two groups in Electricity conductive plaster facing with each other in the opposite side portion of transmission line (24) (26).
Description
Cross reference to related applications
This application claims the priority of 2 months U.S. Provisional Application No. submitted for 6th 62/626961 in 2018, wholes
Content is totally incorporated herein by reference.
Technical field
The present invention relates to a kind of antenna assemblies.
Background technique
More and more technologies are included on motor vehicles.Radar and laser radar sensing device provide detection in vehicle
Neighbouring or the object in path ability.Many such devices include the radiating antenna of radiation of the transmitting for object detection.
Although verified different antenna type be it is useful, they are not without disadvantage or defect.For example, some
There is the ability of covering wide visual field for the antenna of short range or middle range detection, but work as and passed through from the electromagnetic wave of aerial radiation
High loss is subjected to when the instrument board of vehicle.This high loss is usually associated with the vertical polarization of antenna.Solve the problems, such as this one
Kind is attempted to be to be included in horizontal polarization.However, difficulty associated with horizontal polarization is that impedance bandwidth is usually too narrow without being able to satisfy
Production requirement.A kind of method for increasing impedance bandwidth includes the thickness for increasing antenna substrate material.It is associated with this method to lack
Point is that it increases cost.
It is associated with some known radar antenna configurations another difficulty is that due to the electricity on neighbouring antenna, vehicle
Subassembly and close to antenna other metals or dielectric substance radiating scattering caused by high-frequency ripple appearance.It is more complicated
, the ripple in the antenna pattern of each antenna occurs at different angles, and influences all antennas for being used for radar
Antenna pattern uniformity.The significant angle for reducing radar system of non-uniform antenna pattern finds precision.
Summary of the invention
Illustrated examples antenna assembly includes substrate, the transmission line being supported on substrate and is supported on multiple on substrate
Electricity conductive plaster (patches).Each Electricity conductive plaster, which has, is connected to the first end of transmission line and the second end of ground connection.Multiple conductions
Patch is arranged to include two groups in Electricity conductive plaster facing with each other in the opposite side portion of transmission line.
In the example embodiment of the one or more features of the antenna assembly with earlier paragraphs, Electricity conductive plaster has respectively
There is distance between the first end and a second end, and the working frequency of antenna assembly is based on distance.
In the example embodiment of the one or more features of the antenna assembly with earlier paragraphs, Electricity conductive plaster exists respectively
First end nearby has the first width, and the radiant power of Electricity conductive plaster is based respectively on width.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Patch has the second width near second end respectively, and second is of different size in the first width.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
First width of two the first other two in Electricity conductive plaster of different size in patch.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Two first ends closer to the transmission line in patch；In Electricity conductive plaster other two closer to transmission line the second phase
Opposite end；And the first end of transmission line is connected to radiation source.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
The radiant power of patch is based respectively on the second width.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Patch is located on a side of substrate, and substrate includes the ground plane separated with a side of substrate, and Electricity conductive plaster divides
Multiple conductive through holes of ground plane Bao Kuo be connected to.
In with earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one, every group
In Electricity conductive plaster second end between length correspond to the half wave in the substrate of the radiation radiated by Electricity conductive plaster
It is long.
Example embodiment with the one or more features of the antenna assembly of any one in earlier paragraphs, which is included in, to be led
Conductive layer near electric patch and the multiple conductive through holes being connected between conductive layer and ground.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Layer includes multiple parasitic conductive elements, and each of parasitic conductive element couples with one in conductive through hole.
In with earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one, each
Conductive through hole be located relative to connection parasitic conductive element in one edge position and some through-holes position not
It is same as the position of other through-holes.
In the example embodiment of the one or more features of the antenna assembly with any one in earlier paragraphs, connection
The parasitic conductive elements of some through-holes is connected to than being connected to the parasitic conductive elements of other through-holes closer to Electricity conductive plaster, and its
Center of the corresponding position of its through-hole than the parasitic conductive element for being located closer to couple accordingly of some through-holes.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Layer is connected to the second end of Electricity conductive plaster, and conductive layer has the long ruler for being parallel to transmission line at least as transmission line
It is very little.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Patch is on a surface of substrate, and conductive layer is on a surface for substrate.
In with earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one, transmission
Line includes difference two-wire (differential twin line).
Example embodiment with the one or more features of the antenna assembly of any one in earlier paragraphs includes providing
The radiation source of unbalanced signal and the converter that radiation source is connected to transmission line.Converter propagates it along transmission line in signal
Before, balance the unbalanced signal.
In with earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one, radiation
Source includes substrate integration wave-guide, and converter includes balanced-to-unblanced transformer.
It is conductive in earlier paragraphs in the example embodiment of the one or more features of the antenna assembly of any one
Patch respectively have geometrical construction and in each group the geometrical construction of two Electricity conductive plasters be identical.
The various feature and advantage of at least one disclosed example embodiment to those skilled in the art will from
Lower specific embodiment becomes apparent.It can be briefly described as follows with the attached drawing of specific embodiment.
Detailed description of the invention
Fig. 1 schematically shows the example antenna of embodiment according to the present invention design.
Fig. 2 shows the features of the selection of the embodiment of Fig. 1.
Fig. 3 is the cross-sectional view taken along the line 3-3 in Fig. 2.
Fig. 4 schematically shows another example antenna constructions of embodiment according to the present invention design.
Fig. 5 is the cross-sectional view taken along the line 5-5 in Fig. 4.
Fig. 6 schematically shows another example antenna construction of embodiment according to the present invention design.
Specific embodiment
The embodiment provides a kind of antenna, multiple conductions which includes transmission line and couple with transmission line
Patch.Using the embodiment of the present invention, broader bandwidth of operation and broader radiated wave can be realized in a cost effective manner
Beam width, while avoiding undesirable moire effect.
Fig. 1 shows antenna assembly 20 comprising substrate 22 and the transmission line 24 being supported on substrate 22.Multiple conductive labels
Piece 26 is supported on substrate 22.Each Electricity conductive plaster 26 has the first end 28 for being connected to transmission line 24 and by conductive through hole 32
The second end 30 of ground connection.
In the example shown, transmission line 24 includes difference two-wire, and Electricity conductive plaster 26 is to include in transmission line 24
Multiple groups of the form arrangement of two Electricity conductive plasters 26 facing with each other in opposite side portion.Each packet in multiple groups of 26A-26G
Include two in the length of transmission line 24 Electricity conductive plaster 26 facing with each other.Electricity conductive plaster 26 is the resonance for emitting radiation
Device.Shown example includes the radiation source 34 of such as substrate integration wave-guide or microstrip line.The embodiment includes converter 36, such as flat
Radiation source 34 is connected to transmission line 24 by weighing apparatus-imbalance converter.In signal before the propagation of transmission line 24, converter 36
Balance the unbalanced signal from radiation source 34.
As shown in Figure 2, each Electricity conductive plaster has the first width W1 at first end 28, and has at second end 30
There is the second width W2.For each example Electricity conductive plaster 26, the first width W1 is less than the second width W2.In other embodiments,
Width W1 and W2 is equal.In the embodiment in figure 1, the first at least one set of width W1 in 26 groups of patch is different from Electricity conductive plaster
At least another group of the first width W1` in 26 groups.As shown in fig. 1, which wraps every group of Electricity conductive plaster 26
Include the first different width W1.In this example, it is spaced farther out with group 26A-26G from radiation source 34, the first width W1
It becomes larger.
The first different width W1 provide different resonance powers for different Electricity conductive plaster groups.Electricity conductive plaster group 26C,
26D, 26E, 26F and 26G have the first width W1 being gradually increased, to provide the power of the cone of radiation along antenna assembly 20.
Each Electricity conductive plaster 26 includes the distance between first end 28 and second end 30 D.Distance D is determining or control day is traditional thread binding
The working frequency set.The those skilled in the art for benefiting from this specification will select appropriately distance D to meet it to realize
The working frequency of specific requirements.
Length L between the second end 30 of every group of Electricity conductive plaster 26 corresponds to be given off in the substrate by Electricity conductive plaster 26
The about half wavelength of radiation.
In the example shown, the concrete shape of Electricity conductive plaster 26 and arrangement are realized for for example useful on the rolling stock
Radar-probing system desired antenna performance.Other Electricity conductive plaster shapes and arrangement are possible, and benefit from this theory
Bright book is led it will be appreciated by those skilled in the art that how to construct with the multiple of the feature similar with the feature of example Electricity conductive plaster
Electric patch will meet the desired antenna performance of its specific requirements to realize.
As shown in Figure 3, compared to the side for supporting Electricity conductive plaster 26 on substrate 22, conductive through hole 32 is by Electricity conductive plaster 26
Second end 30 be connected to the ground plane 40 in the opposite side portion of substrate 22.
Fig. 4 shows the example embodiment on the side identical with Electricity conductive plaster 26 of substrate 22 including conductive layer 42.
In this example, conductive layer 42 includes the multiple parasitic conductive elements 44 being supported on substrate 22.Parasitic conductive element 44 along
Substrate 22 is arranged, so that conductive layer 42 extends along the whole length of transmission line 24.Otherwise parasitic conductive element 44 is for inhibiting
By ripple associated with the radiation from Electricity conductive plaster 26.
The conductive layer 42 established by conductive parasitic element 44 gives off signal energy from substrate, to avoid this energy along
Substrate is propagated further, and otherwise these energy can be propagated further in a manner of causing with the interference of other antennas along substrate.
Conductive parasitic element 44 effectively eliminates the energy radiated by substrate 22, this has been reduced or avoided near more
Ripple and interference between a antenna.
Each parasitic antenna 44 includes the corresponding conductive through hole 46 that parasitic antenna 44 is connected to ground plane 40.Fig. 5 is shown
How conductive through hole 46 is located in the parasitic conductive element 44 coupled accordingly or along the parasitic conductive member coupled accordingly
Part 44.From Figure 4 and 5 it is appreciated that conductive parasitic element 44A than conductive parasitic element 44B, 44C and 44D closer to Electricity conductive plaster
26G.The position of corresponding conductive through hole 46 becomes according to the distance between Electricity conductive plaster 26 and corresponding parasitic conductive element 44
Change.
Conductive through hole 46A associated with conductive parasitic element 44A is closer to an edge of conductive parasitic element 44A
50A rather than its opposite edge 52A.Electricity conductive plaster 26, corresponding through-hole 46 are gradually distance from as conductive parasitic element 44 is located at
It is located closer to the center of the parasitic conductive element 44 of connection.In this example, conductive through hole 46D is located substantially at conductive parasitic member
Center between the edge 50D and 52D of part 44D.The different conductive through hole positions of parasitic conductive element 44 relative to connection
Power is solved along substrate 22 the fact moving and decay far from the direction of Electricity conductive plaster 26.In the example of hgure 5, with lead
Electric parasitic antenna 44A compares conductive parasitic element 44D with 44B and is subjected to lower radiant power, conductive parasitic element 44A and 44B
Corresponding conductive through hole 46A and 46B closer to the edge 50 towards Electricity conductive plaster 26G.
Fig. 6 shows another example embodiment, and wherein conductive layer 42 is the pantostrat of conductive material, is supported in substrate
On the same side of 22 bearing Electricity conductive plaster 26.
For any example embodiment, by selecting the width W1 and W2 of Electricity conductive plaster 26 to can control antenna assembly 20
Radiant power.Allow to control using different width along transmission line 24 and be distributed along the power of antenna assembly 20.Including conduction
Moire effect has been reduced or avoided in layer 42.For any example embodiment, it is possible to while using relatively thin substrate layer
Realize broader bandwidth of operation and radiation beam width, this, which is provided, saves cost and efficient antenna.
Though it is shown that there are the different embodiments for seeming different features, but these features are not limited to be disclosed above
Specific embodiment.Other combinations of these features can be realized other embodiments.
The description of front is regarded as illustrative in nature rather than restrictive.In the situation for not departing from essence of the invention
Under, the variants and modifications of disclosed example embodiment will become obvious to those skilled in the art.It provides
It can only be determined by research following following claims to legal scope of the invention.
Claims (20)
1. a kind of antenna assembly (20), comprising:
Substrate (22)；
Transmission line (24), the transmission line (24) are supported on the substrate (22)；
Multiple Electricity conductive plasters (26), the multiple Electricity conductive plaster (26) are supported on the substrate (22), each Electricity conductive plaster tool
There is the second end (30) of the first end (28) for being connected to the transmission line (24) and ground connection, the multiple Electricity conductive plaster (26) is to wrap
Include multiple groups of form cloth of the Electricity conductive plaster (26) of facing with each other in the opposite side portion of the transmission line (24) two
It sets.
2. antenna assembly (20) as described in claim 1, which is characterized in that
The Electricity conductive plaster (26) is respectively provided in the distance between the first end (28) and the second end (30)；And
The working frequency of the antenna assembly (20) is based on the distance.
3. antenna assembly (20) as described in claim 1, which is characterized in that
The Electricity conductive plaster (26) nearby has the first width in the first end (28) respectively；And
The radiant power of the Electricity conductive plaster (26) is respectively at least partially based on first width.
4. antenna assembly (20) as claimed in claim 3, which is characterized in that
The Electricity conductive plaster (26) nearby has the second width in the second end (30) respectively；And
Described second is of different size in first width.
5. antenna assembly (20) as claimed in claim 4, which is characterized in that two in the Electricity conductive plaster (26) described
First width of first other two in the Electricity conductive plaster (26) of different size.
6. antenna assembly (20) as claimed in claim 5, which is characterized in that
Described two first ends (28) closer to the transmission line (24) in the Electricity conductive plaster (26)；
In the Electricity conductive plaster (26) it is described other two closer to the second opposite end of the transmission line (24)；And
The first end (28) of the transmission line (24) is connected to radiation source (34).
7. antenna assembly (20) as claimed in claim 4, which is characterized in that the radiant power of the Electricity conductive plaster (26) is distinguished
Based on second width.
8. antenna assembly (20) as described in claim 1, which is characterized in that
The Electricity conductive plaster (26) is located on a side of the substrate (22)；
The substrate (22) includes the ground plane (40) separated with one side of the substrate (22)；And
The Electricity conductive plaster (26) respectively includes the multiple conductive through holes (46) for being connected to the ground plane (40).
9. antenna assembly (20) as described in claim 1, which is characterized in that the second end of the Electricity conductive plaster (26) in every group
(30) length between corresponds to 1/2 wavelength radiated in substrate (22) given off by Electricity conductive plaster (26).
10. antenna assembly (20) as described in claim 1, which is characterized in that including
Conductive layer (42), the conductive layer (42) is near the Electricity conductive plaster (26)；And
Multiple conductive through holes (46), the multiple conductive through hole (46) are connected between the conductive layer (42) and ground.
11. antenna assembly (20) as claimed in claim 10, which is characterized in that
The conductive layer (42) includes multiple parasitic conductive elements (44)；And
Each of described parasitic conductive element (44) couples with one in the conductive through hole (46).
12. antenna assembly (20) as claimed in claim 11, which is characterized in that
Each conductive through hole is located relative to the position at one edge in the parasitic conductive element (44) of connection；
And
The position of some through-holes is different from the position of other through-holes.
13. antenna assembly (20) as claimed in claim 12, which is characterized in that
The parasitic conductive element (44) for being connected to some through-holes is led than being connected to the parasitism of other through-holes
Electric device (44) is closer to the Electricity conductive plaster (26)；And
The corresponding position of other through-holes is located closer to described in corresponding connection than some through-holes
The center of parasitic conductive element (44).
14. antenna assembly (20) as claimed in claim 10, which is characterized in that
The conductive layer (42) is connected to the second end (30) of the Electricity conductive plaster (26)；And
The conductive layer (42) has the size for being parallel to the transmission line (24) at least with the transmission line (24) equally length.
15. antenna assembly (20) as claimed in claim 10, which is characterized in that
The Electricity conductive plaster (26) is on a surface of the substrate (22)；And
The conductive layer (42) is on one surface of the substrate (22).
16. antenna assembly (20) as claimed in claim 10, which is characterized in that the conductive layer (42) includes conductive material
Pantostrat.
17. antenna assembly (20) as described in claim 1, which is characterized in that the transmission line (24) includes difference two-wire.
18. antenna assembly (20) as described in claim 1, which is characterized in that including
Radiation source (34), the radiation source (34) provide unbalanced signal；And
The radiation source is connected to the transmission line (24) by converter (36), the converter (36), the converter (36)
The unbalanced signal described in forward horizontal stand of the signal along the transmission line (24) propagation.
19. antenna assembly (20) as claimed in claim 18, which is characterized in that
The radiation source (34) includes substrate (22) integrated waveguide；And
The converter (36) includes balanced-to-unblanced transformer.
20. antenna assembly (20) as described in claim 1, which is characterized in that
The Electricity conductive plaster (26) respectively has geometrical construction；And
The geometrical construction of two Electricity conductive plasters (26) is identical in each group.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862626961P | 2018-02-06 | 2018-02-06 | |
| US62/626,961 | 2018-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110120582A true CN110120582A (en) | 2019-08-13 |
| CN110120582B CN110120582B (en) | 2022-03-11 |
Family
ID=67520497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910110306.5A Active CN110120582B (en) | 2018-02-06 | 2019-02-11 | Antenna device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110120582B (en) |
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2019
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| Publication number | Publication date |
|---|---|
| CN110120582B (en) | 2022-03-11 |
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