CN110867643B - Wide-beam antenna, antenna array and radar using antenna array - Google Patents
Wide-beam antenna, antenna array and radar using antenna array Download PDFInfo
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- CN110867643B CN110867643B CN201911057220.7A CN201911057220A CN110867643B CN 110867643 B CN110867643 B CN 110867643B CN 201911057220 A CN201911057220 A CN 201911057220A CN 110867643 B CN110867643 B CN 110867643B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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Abstract
The invention provides a wide-beam antenna, an antenna array and a radar applying the antenna array, comprising: a radiating unit for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the respective radiating units through a feed line; a feed line, the feed line comprising: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connection line is longer than the length of the interval between the adjacent feed line ends. The invention can realize wider frequency band response without increasing the area.
Description
Technical Field
The invention relates to the technical field of automobile electronics, in particular to a wide-beam antenna, an antenna array and a radar applying the antenna array.
Background
Antenna arrays are the most common transmitting and receiving mechanisms applied in radar systems, and most of antennas currently used in millimeter wave radars are series feed antenna arrays.
As shown in fig. 1-2, the electromagnetic wave signal is received from the radiator 1 in a sheet coupling manner, and simultaneously, high-frequency current is transmitted to each node in the radiator 1 through the feed line 2 by the slow wave action of the material 3 and the reflection action of the ground 6, so that the low side lobe effect of the antenna is realized in the radiator 1 through the design of different current intensities, and the high-frequency current passes through the impedance transformation section 4, and the transmitted energy is maximized through the impedance transformation section. The reverse of this process applies equally well.
As shown in fig. 3-4, a shorter physical length is realized again on the basis of realizing the same high-power intensity, electromagnetic wave signals are coupled and received from the radiator 1, and simultaneously, high-frequency current is transmitted to each node in the radiator 1 through the feeding line 2 by the slow wave action of the material 3 and the reflection action of the ground connection 6, the characteristics of pointing and widening and narrowing of different beams of the antenna can be realized by adjusting the distance between two adjacent radiators 1 and 1, for example, the characteristics of 90-degree design of the radiator 1 and the feeding line 2 can not generate coupling interference by adjusting the bending angle. The end radiator 5 is less reflective by adjusting its length, so that superior antenna parameters can be obtained. The radiator 1 realizes the low side lobe effect of the antenna through the design of different current intensities, and the high-frequency current passes through the impedance transformation section 4 and the impedance transformation section to maximize the transmitted energy. The reverse of this procedure is equally applicable, so the second solution is not a good design solution.
In summary, the current approach to improve the antenna beam either requires a larger area or does not achieve a wider beam number.
Disclosure of Invention
In order to solve the above and other potential technical problems, the present invention provides a wide beam antenna, an antenna array and a radar using the antenna array, which can realize a wider frequency band response without increasing the area.
A wide beam antenna comprising:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
a feed line, the feed line comprising:
a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line;
a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends;
the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal;
the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
Further, the antenna array further comprises an impedance transformation section, if the impedance of the antenna array is not matched with that of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the impedance matching unit has a conversion parameter of 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Further, the antenna also comprises a grounding end, wherein the grounding end is used for making a reference plane for the radiating unit.
Further, the phase differences between the adjacent radiating elements are not equal:
the sum of the phase angle of the electric field of the radiating element or the phase angle of the current and the phase angle between adjacent radiating elements is 360 degrees.
Further, the intervals between the adjacent radiating elements in the feeding line direction are not equal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is less than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
Further, the intervals between the adjacent radiating elements in the feeding line direction are not equal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is greater than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
Further, projections between the adjacent radiating elements in a direction perpendicular to the feed line overlap each other:
the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is less than half the length of the radiating elements, and the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is greater than zero.
Further, the radiating element sizes are different:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feeding line;
the thickness dimension of the radiating element near the end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the extension direction of the feed line terminal is perpendicular to the length direction of the radiating element, the length of the feed line terminal wraps the width of the radiating element, and two ends of the feed line terminal are respectively connected with the connecting lines extending upwards/downwards.
Further, a buffer part is arranged at the connection part of the feed line end and the connecting wire, the feed line end is connected with the connecting wire through the buffer part, and the buffer part has the function of reducing the reflection and the reduction of the electromagnetic wave signal caused by the bending radian between the feed line end and the connecting wire when the electromagnetic wave signal enters the connecting wire through the feed line end.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer portion is a straight line, the straight line buffer portion makes a straight line which cuts off the intersection point and the included angle based on the intersection point and the included angle of the straight line to which the feeding terminal belongs and the straight line to which the connecting line belongs, one end of the straight line can be connected with the feeding terminal, and the other end of the straight line can be connected with the connecting line.
Further, when the shape of the buffer portion is an arc shape, the arc-shaped buffer portion is rounded with a straight line to which the feeding terminal belongs and a straight line to which the connecting wire belongs as tangent lines, and the feeding terminal and the connecting terminal are connected by the rounded portion.
A wide beam antenna array comprising:
one or more of the wide beam antennas,
the wide beam antenna comprises a radiating element and a feed line:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
The wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
A radar fabricated using the antenna array, comprising:
the system comprises one or more wide-beam antenna arrays, a radar chip and a wiring terminal, wherein the wide-beam antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
a wide beam antenna array comprises one or more wide beam antennas comprising radiating elements and feed lines:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
The wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
As described above, the present invention has the following advantageous effects:
(1) The invention can greatly reduce the physical size of the antenna, can increase or reduce the wave beam of the antenna, and is flexible to adjust, because the antenna synthesis mode adopts a mode of shorter half wavelength or shorter to synthesize, and the common antenna generally needs more than one wavelength or more. Therefore, the antenna can reduce the area of the PCB, reduce the cost and achieve the same electrical performance.
(2) The invention can realize wider frequency band response without increasing large area, and can achieve the purpose of widening bandwidth because the resonant frequency of each radiator is different, thereby effectively using communication and radar systems and reducing cost.
(3) The antenna of the invention can use the radiation unit not limited to the horizontal polarized antenna, is also applicable to the vertical polarized antenna and various oblique polarized antennas, including various circular polarized antennas, elliptical polarized antennas and the like, and can adjust the antenna array parameters in this way.
(4) The antenna of the invention adjusts the reflecting branches at the tail end, not only limits the length of the radiating patch at the tail end, but also is applicable to all modes capable of realizing less tail end current, and the implementation mode is not limited as long as the reflection brought by the tail end can be eliminated, and simultaneously, the beam direction and the frequency band characteristic of the antenna can be changed by adjusting the state of the tail end, and the modes are all right characteristics of the invention.
(5) The shape of the antenna is that the shapes of two sides or a plurality of sides are not fixed, and the antenna can be in any shape, so that the purpose of synthesizing an antenna array can be achieved, and the antenna belongs to the scope of the claims.
(6) The included angle between the antenna and the feeder line can be any value, most of adjustment parameters are concentrated on the beam width and the like, but the adjustment angle is not the only way, and the adjustment angle can be realized in a mode of connecting two points in various shapes and comprises all the claims.
(7) The antenna of the invention is also suitable for synthesizing multiple columns of antennas, and the multiple columns of antennas can be a combination of horizontal, vertical and upper and lower 3D spaces and can be realized in a similar way.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a conventional antenna according to the design scheme.
Fig. 2 shows a rear view of a conventional antenna design.
Fig. 3 is a schematic diagram of a conventional antenna according to a second embodiment.
Fig. 4 shows a rear view of a two-conventional antenna design.
Fig. 5 shows a schematic diagram of a wide beam antenna according to the present invention.
Fig. 6 is a schematic diagram of a wide beam antenna array according to one embodiment of the present invention applied in a system.
Fig. 7 shows the patterns of the E-plane and H-plane of the antenna array of the present invention in an ideal environment.
Fig. 8 shows the patterns of the E-plane and H-plane of the antenna array of the present invention at the time of actual detection.
Fig. 9 shows a phase diagram of an antenna array of the present invention in an ideal environment.
Fig. 10 shows a phase diagram of an antenna array of the present invention in an ideal environment.
In the figure:
1-a radiating element; 2-a feed line; 21-a feed line end group; 22-connecting wire groups; 3-material; a 4-impedance transformation section; a 5-terminal radiating element; 6-a ground terminal; 101-antenna array.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
With reference to figures 5 to 10 of the drawings,
a wide beam antenna comprising:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
a feed line, the feed line comprising:
a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line;
a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends;
the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal;
the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
Further, the antenna array further comprises an impedance transformation section, if the impedance of the antenna array is not matched with that of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the impedance matching unit has a conversion parameter of 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Further, the antenna also comprises a grounding end, wherein the grounding end is used for making a reference plane for the radiating unit.
Further, the phase differences between the adjacent radiating elements are not equal:
the sum of the phase angle of the electric field of the radiating element or the phase angle of the current and the phase angle between adjacent radiating elements is 360 degrees.
Further, the intervals between the adjacent radiating elements in the feeding line direction are not equal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is less than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
Further, the intervals between the adjacent radiating elements in the feeding line direction are not equal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is greater than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
Further, projections between the adjacent radiating elements in a direction perpendicular to the feed line overlap each other:
the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is less than half the length of the radiating elements, and the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is greater than zero.
Further, the radiating element sizes are different:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feeding line;
the thickness dimension of the radiating element near the end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the extension direction of the feed line terminal is perpendicular to the length direction of the radiating element, the length of the feed line terminal wraps the width of the radiating element, and two ends of the feed line terminal are respectively connected with the connecting lines extending upwards/downwards.
Further, a buffer part is arranged at the connection part of the feed line end and the connecting wire, the feed line end is connected with the connecting wire through the buffer part, and the buffer part has the function of reducing the reflection and the reduction of the electromagnetic wave signal caused by the bending radian between the feed line end and the connecting wire when the electromagnetic wave signal enters the connecting wire through the feed line end.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer portion is a straight line, the straight line buffer portion makes a straight line which cuts off the intersection point and the included angle based on the intersection point and the included angle of the straight line to which the feeding terminal belongs and the straight line to which the connecting line belongs, one end of the straight line can be connected with the feeding terminal, and the other end of the straight line can be connected with the connecting line.
Further, when the shape of the buffer portion is an arc shape, the arc-shaped buffer portion is rounded with a straight line to which the feeding terminal belongs and a straight line to which the connecting wire belongs as tangent lines, and the feeding terminal and the connecting terminal are connected by the rounded portion.
A wide beam antenna array comprising:
one or more of the wide beam antennas,
the wide beam antenna comprises a radiating element and a feed line:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
The wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
A radar fabricated using the antenna array, comprising:
the system comprises one or more wide-beam antenna arrays, a radar chip and a wiring terminal, wherein the wide-beam antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
a wide beam antenna array comprises one or more wide beam antennas comprising radiating elements and feed lines:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by each radiating unit through a feed line, the radiating units are distributed on two sides of the feed line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feed line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connection line is longer than the length of the interval between the adjacent feed line ends.
The wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
Moreover, while illustrative embodiments have been described herein, the scope of any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., across aspects across various embodiments), adaptations and/or alterations as would be appreciated by those in the art. Based on the technology of the present disclosure. 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 present specification or during prosecution of the application. These examples should be construed as non-exclusive. Furthermore, 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 exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
Claims (9)
1. A wide-beam antenna is characterized by comprising a plurality of radiating elements and a feed line,
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the radiating units through the feeding line, the radiating units are distributed on two sides of the feeding line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feeding line;
the feed line includes a feed line end group and a connection line group:
the feed line terminal group includes a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line;
the connecting wire group comprises a plurality of connecting wires, and each connecting wire is used for connecting two adjacent feeding line ends;
the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal;
the length of the connecting wire is longer than the interval length between the adjacent feeding wire ends;
the feeding line end is provided with a buffer part at the connection part of the feeding line end and the connecting line, the feeding line end and the connecting line are connected through the buffer part, and the buffer part can reduce electromagnetic wave signal reflection and reduction caused by bending radian between the feeding line end and the connecting line when electromagnetic wave signals enter the connecting line through the feeding line end.
2. The wide beam antenna of claim 1, further comprising an impedance transformation section for adding impedance matching sections if the antenna array does not match the impedance of the system, the number of impedance matching sections being one or more.
3. The broad beam antenna as claimed in claim 2, wherein the impedance matching section has a conversion parameter of 1/4 wavelength microstrip line, and the impedance transformation formula is as follows
4. A wide beam antenna according to claim 3, wherein the phase differences between the adjacent radiating elements are not equal:
the sum of the phase angle of the electric field of the radiating element or the phase angle of the current and the phase angle between adjacent radiating elements is 360 degrees.
5. The wide beam antenna of claim 4, wherein the spacing between adjacent radiating elements along the feed line direction is unequal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is less than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
6. The wide beam antenna of claim 5, wherein the spacing between adjacent radiating elements along the feed line direction is unequal:
for radiating elements near the tip, the length of the spacing between adjacent feed lines is greater than the length of the spacing between adjacent feed lines of radiating elements far from the tip.
7. The wide beam antenna of claim 6, wherein projections between adjacent radiating elements in a direction perpendicular to a feed line overlap each other:
the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is less than half the length of the radiating elements, and the distance D of the center points of the adjacent radiating elements in the direction perpendicular to the feed line is greater than zero.
8. A wide beam antenna array comprising one or more wide beam antennas,
the wide beam antenna comprises a plurality of radiating elements and feed lines:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the radiating units through the feeding line, the radiating units are distributed on two sides of the feeding line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feeding line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connecting wire is longer than the interval length between the adjacent feeding wire ends; the feeding line end is connected with the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part can reduce electromagnetic wave signal reflection and reduction caused by bending radian between the feeding line end and the connecting line when the electromagnetic wave signal enters the connecting line through the feeding line end;
the wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
9. A radar manufactured by using an antenna array, which is characterized by comprising one or more wide beam antenna arrays, a radar chip and a wiring terminal, wherein the wide beam antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the wide beam antenna array comprises one or more wide beam antennas comprising a plurality of radiating elements and feed lines:
the radiating units are used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the radiating units through the feeding line, the radiating units are distributed on two sides of the feeding line, and a different-side radiating unit is arranged between two adjacent radiating units on the same side of the feeding line;
the feed line includes: a feed line terminal group including a plurality of feed line terminals each provided at a position in contact with the radiating element for connecting the radiating element and the feed line; a connection line group including a plurality of connection lines, each of the connection lines being for connecting adjacent two of the feed line ends; the relative angle between the feed line end and the connecting line is non-vertical and/or non-horizontal; the length of the connecting wire is longer than the interval length between the adjacent feeding wire ends; the feeding line end is connected with the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part can reduce electromagnetic wave signal reflection and reduction caused by bending radian between the feeding line end and the connecting line when the electromagnetic wave signal enters the connecting line through the feeding line end;
the wide beam antennas are arranged side by side at the same height such that adjacent wide beam antennas are positioned at the same location along the feed line for radiating elements of the same size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911057220.7A CN110867643B (en) | 2019-10-30 | 2019-10-30 | Wide-beam antenna, antenna array and radar using antenna array |
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| CN201911057220.7A CN110867643B (en) | 2019-10-30 | 2019-10-30 | Wide-beam antenna, antenna array and radar using antenna array |
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| CN112534648B (en) * | 2020-09-18 | 2022-10-04 | 华为技术有限公司 | Antenna device, preparation method of antenna device, radar and terminal |
| CN112635970B (en) * | 2020-12-02 | 2022-12-16 | 北京安石科技有限公司 | Shell seeker positioning antenna and positioning method |
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