CN211455943U - Antenna-feeder integrated antenna, antenna array and radar applying antenna array - Google Patents
Antenna-feeder integrated antenna, antenna array and radar applying antenna array Download PDFInfo
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- CN211455943U CN211455943U CN201921861760.6U CN201921861760U CN211455943U CN 211455943 U CN211455943 U CN 211455943U CN 201921861760 U CN201921861760 U CN 201921861760U CN 211455943 U CN211455943 U CN 211455943U
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Abstract
The utility model provides an antenna-feeder integrated antenna, an antenna array and a radar applying the antenna array, which comprises a radiation unit, a feeder line and a reflection end matching branch, wherein the reflection end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line; the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction. The utility model discloses can obtain higher gain and lobe width, but this antenna can't realize the demand of end vice lamella temporarily, and the antenna uses arc corner design to reduce the reflection.
Description
Technical Field
The invention relates to the technical field of automotive electronics, in particular to an antenna-feed integrated antenna, an antenna array and a radar applying the antenna array.
Background
The microstrip antenna (microstrip antenna) is formed by attaching a metal thin layer on a thin medium substrate as a grounding plate on one surface, manufacturing a metal patch with a certain shape on the other surface by using a photoetching method, namely a microstrip patch, and feeding the patch by using a microstrip line or a coaxial probe. Microstrip antennas are divided into two categories: the first patch is in the shape of a long and thin strip and is a microstrip element antenna. When the second patch is an area unit, the second patch is a microstrip antenna. If the ground plate is carved with a gap and the microstrip line is printed on the other side of the medium substrate, the gap feeds to form the microstrip slot antenna.
Microstrip antennas have the advantages of small size, light weight, simple manufacturing process, easy realization of conformal property, etc., and are widely used. A microstrip antenna may be equivalent to a resonant cavity, having a high value near its resonant frequency, i.e., within the operating band. Although the research and application of microstrip antennas are mature at present, there are many problems worth studying the analysis and research of the electromagnetic scattering characteristics of microstrip antennas.
Disclosure of Invention
In order to solve the above and other potential technical problems, the present invention provides an antenna-feed integrated antenna, an antenna array and a radar using the antenna array, wherein the antenna-feed integrated antenna can obtain higher gain and lobe width, but the antenna can not meet the requirement of bottom side lobe temporarily, and the antenna uses an arc-shaped corner design to reduce reflection.
The antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
An antenna array comprising one or more wide beam antennas,
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(γ)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,γthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
A radar using the antenna array comprises one or more antenna arrays, a radar chip and a wiring terminal, wherein the wide-beam antenna array is electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the antenna array comprises a plurality of antennas, adjacent antennas are mutually coupled, each antenna comprises a radiation unit and a feeder line, and a radiation unit body of the radiation unit is connected to the feeder line through a feeder line connecting part;
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
Further, the distance between the radiation units is configured such that the distance value between the end adjacent radiation units is smaller than the distance value between the middle adjacent radiation units.
As described above, the present invention has the following advantageous effects:
1) the antenna-feed integrated antenna can obtain higher gain and lobe width, but the antenna can not meet the requirement of a bottom side lobe temporarily, and the antenna uses an arc-shaped corner design to reduce reflection.
2) One embodiment is the effect after half-wavelength array, the gain is kept about 14dBi, and the lobe width is general; another embodiment quarter wave synthesis, with a wider lobe width, would increase the gain by about 3dB at 75 degrees, but would decrease the peak gain by about 2 dB.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an embodiment of the present invention.
FIG. 2 is a schematic diagram of an embodiment of the present invention.
FIG. 3 is a schematic diagram of an embodiment of the present invention.
Fig. 4 is a schematic diagram of an antenna array integrated with an antenna feeder according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an antenna array integrated with an antenna feeder according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of an antenna array integrated with an antenna feeder according to an embodiment of the present invention.
Fig. 7 shows a schematic diagram of an antenna feed integrated antenna with unit length of 1/2 wavelengths.
Fig. 8 shows an antenna feed integrated antenna horizontal/vertical amplitude pattern in unit length at 1/2 wavelengths.
Fig. 9 shows a schematic diagram of an antenna feed integrated antenna with unit length of 1/4 wavelengths.
Fig. 10 shows the antenna feed integrated antenna horizontal/vertical amplitude pattern in unit length for 1/4 wavelengths.
In the figure:
1-a radiating element; 2-a feeder; 3-reflective end matching branches.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
With reference to figures 1 to 10 of the drawings,
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
An antenna array comprising one or more wide beam antennas,
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
A radar using the antenna array comprises one or more antenna arrays, a radar chip and a wiring terminal, wherein the wide-beam antenna array is electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the antenna array comprises a plurality of antennas, adjacent antennas are mutually coupled, each antenna comprises a radiation unit and a feeder line, and a radiation unit body of the radiation unit is connected to the feeder line through a feeder line connecting part;
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
Furthermore, the radiation unit sub-unit group comprises a left inclined radiation sub-unit and a right inclined radiation sub-unit, the left inclined radiation sub-unit is connected with the right inclined radiation sub-unit, and the left inclined angle of the left inclined radiation sub-unit is equal to the right inclined angle of the right inclined sub-unit.
Further, the radiation unit sub-unit group comprises S-shaped radiation sub-units, and the S-shaped radiation sub-units are connected in a terminating manner to form the radiation unit.
Further, a minimum structural unit length value range intercepted at a bending position in the S-shaped radiating subunit
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the maximum without grating lobes.
Furthermore, the minimum structural unit length intercepted at the bending position in the S-shaped radiating subunit is equal to
When the minimum construction unit length is all taken
The beam width of the antenna reaches the minimum value without grating lobes.
Further, the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
Further, the initial value of the distance between the adjacent radiation units is finely adjusted by the following elements of the adjacent two radiation units:
the number of balanced antennas on two sides A; b current phase; c width of radiating element; d, the material type and the material thickness of the radiation unit; e the thickness of the metal to which the radiating element is grounded.
Further, the distance between the radiation units is configured such that the distance value between the end adjacent radiation units is smaller than the distance value between the middle adjacent radiation units.
Moreover, although illustrative embodiments have been described herein, there are equivalent elements, modifications, omissions, combinations (e.g., across aspects of the various embodiments), adaptations and/or ranges of any and all embodiments that may be altered, as will be appreciated by those in the art. Based on the technology of the present disclosure. The limitations in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the specification or during the prosecution of the application. These examples should be construed as non-exclusive. Further, the steps of the disclosed methods may be modified in any manner, including by reordering steps and/or inserting or deleting steps. It is intended, therefore, that the specification and examples be considered as illustrative only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
Claims (14)
1. The antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
2. The antenna and feed integrated antenna as claimed in claim 1, wherein the radiating element sub-unit group comprises a left inclined radiating sub-unit and a right inclined radiating sub-unit, the left inclined radiating sub-unit is connected with the right inclined radiating sub-unit, and a left inclined angle of the left inclined radiating sub-unit is equal to a right inclined angle of the right inclined sub-unit.
3. The antenna and feed integrated antenna as claimed in claim 2, wherein the radiating element subunit comprises S-shaped radiating subunits, and the S-shaped radiating subunits are connected in a tail-to-tail manner to form a radiating element.
4. The antenna and feed integrated antenna as claimed in claim 3, wherein the minimum structural unit length range intercepted at the bend in the S-shaped radiating subunit
5. The antenna and feed integrated antenna according to claim 4, wherein the width of the radiating element and the impedance of the radiating element satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
6. An antenna array comprising one or more wide beam antennas,
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
7. The antenna array of claim 6, wherein the radiating element sub-group comprises a left tilted radiating sub-element and a right tilted radiating sub-element, the left tilted radiating sub-element is connected to the right tilted radiating sub-element, and a left tilt angle of the left tilted radiating sub-element is equal to a right tilt angle of the right tilted sub-element.
8. The antenna array of claim 6, wherein the radiating element sub-groups comprise S-shaped radiating sub-elements, and the S-shaped radiating sub-elements are connected in a tail-to-tail manner to form the radiating elements.
9. The antenna array of claim 8, wherein the minimum constructive element length intercepted at the bend in the S-shaped radiating sub-element ranges in value
10. The antenna array of claim 6, wherein the widths of the radiating elements and the impedances of the radiating elements satisfy the following relationship:
0.1<(W/H)<2.0 (2)
1<(r)<15 (3)
wherein W is the width of the radiation unit, T is the thickness of the radiation unit, H is the thickness of the substrate plate,rthe dielectric constant of the PCB material.
11. A radar employing an antenna array, comprising: the antenna array is the antenna array in claims 6-10, and is electrically connected with the radar chip, and the radar chip is electrically connected with the terminal;
the antenna array comprises a plurality of antennas, adjacent antennas are mutually coupled, each antenna comprises a radiation unit and a feeder line, and a radiation unit body of the radiation unit is connected to the feeder line through a feeder line connecting part;
the antenna-feeder integrated antenna comprises a radiation unit, a feeder line and a reflection tail end matching branch, wherein the reflection tail end matching branch is arranged at the tail end of the radiation unit, and the radiation unit is electrically connected with a system through the feeder line;
the radiation unit comprises at least one group of radiation unit sub-unit groups, each group of radiation unit sub-unit group comprises at least two radiation unit sub-units, the radiation unit sub-units in the same group of radiation unit sub-unit groups are sequentially connected, and the sum of the equivalent vectors of electric fields of the radiation unit sub-units in the same group of radiation unit sub-unit groups is in the vertical direction/horizontal direction;
the equivalent interval between adjacent radiating element sub-unit groups is set as XDWherein the equivalent interval XDSetting the distance between the equivalent centers of the adjacent radiation unit sub-unit groups projected along the extending direction of the radiation units, wherein the equivalent interval formula is as follows:
wherein λ0Is a function of the wavelength of the light,γis the dielectric constant, where the equivalent spacing is the radiating element sub-element.
12. The radar using the antenna array of claim 11, wherein the radiating element sub-group comprises a left inclined radiating sub-element and a right inclined radiating sub-element, the left inclined radiating sub-element is connected with the right inclined radiating sub-element, and the left inclined angle of the left inclined radiating sub-element is equal to the right inclined angle of the right inclined sub-element.
13. The radar using the antenna array as claimed in claim 11, wherein the radiating element sub-groups comprise S-shaped radiating sub-elements, and the S-shaped radiating sub-elements are connected in series to form a radiating element.
14. The radar using antenna array of claim 13 wherein the minimum structural unit length intercepted at the bend in the S-shaped radiating subunit has a range of values
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| CN201921861760.6U CN211455943U (en) | 2019-10-30 | 2019-10-30 | Antenna-feeder integrated antenna, antenna array and radar applying antenna array |
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