CN211957900U - Long-distance antenna, antenna array and radar applying antenna array - Google Patents
Long-distance antenna, antenna array and radar applying antenna array Download PDFInfo
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- CN211957900U CN211957900U CN201921861886.3U CN201921861886U CN211957900U CN 211957900 U CN211957900 U CN 211957900U CN 201921861886 U CN201921861886 U CN 201921861886U CN 211957900 U CN211957900 U CN 211957900U
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Abstract
The invention provides a long-distance antenna, an antenna array and a radar applying the antenna array, wherein the long-distance antenna comprises: the radiation unit is used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the radiation units through a feed line; a feed line, the feed line comprising: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feed line ends. The invention can realize narrower frequency band response and longer-distance coverage range under the condition of not increasing the area.
Description
Technical Field
The invention relates to the technical field of automotive electronics, in particular to a long-distance antenna, an antenna array and a radar applying the antenna array.
Background
The antenna array is the most common transmitting and receiving mechanism applied in a radar system, and most antennas used in the millimeter wave radar at present are series feed type antenna arrays.
As shown in fig. 1-2, an electromagnetic wave signal is received from a radiator 1 through sheet coupling, and simultaneously, through the slow wave action of a material 3, the reflection action of a ground 6 is performed, so that a high-frequency current is transmitted to each node in the radiator 1 through a feed line 2, a low-sidelobe effect of an antenna is realized in the radiator 1 through different current intensity designs, and the high-frequency current passes through an impedance transformation section 4 and then the impedance transformation section, so that the transmitted energy is maximum. The reverse of this process is equally applicable.
As shown in fig. 3-4, a shorter physical length is realized on the basis again, the same high power strength is realized, electromagnetic wave signals are coupled and received from the radiator 1, and simultaneously, through the slow wave action of the material 3 and the reflection action of the ground 6, high-frequency current is transmitted to each node in the radiator 1 through the feed line 2, the characteristics of pointing and widening narrowing of different beams of the antenna can be realized by adjusting the distance between two adjacent radiators, for example, the distance between the radiator 1 and the radiator 1 is adjusted, and the radiator 1 and the feed line 2 are designed by adjusting the bending angle to 90 °, and coupling interference is not generated. The end radiator 5 is less reflective by adjusting its length, so that superior antenna parameters can be obtained. The low side lobe effect of the antenna is realized through the design of different current intensities in the radiator 1, and the high-frequency current passes through the impedance transformation section 4 and then the transmitted energy is maximum through the impedance transformation section. The reverse of this procedure is also applicable, so solution two is not a good design solution either.
In summary, the conventional method for increasing the antenna distance either needs to occupy a larger area, or cannot realize a narrower beam value.
Disclosure of Invention
In order to solve the above and other potential technical problems, the present invention provides a long-range antenna, an antenna array, and a radar using the antenna array, which can achieve a narrow frequency band response and a long-range coverage without increasing an area.
A remote antenna, comprising:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
a feed line, the feed line comprising:
a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line;
a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends;
the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged;
the length of the connecting line is longer than the length of the interval between the adjacent feed line ends.
Further, projections between the adjacent radiation units perpendicular to the feed line direction do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feed line;
the thickness dimension of the radiating element near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the intervals between the adjacent radiation units in the direction of the feed line are not equal:
for the radiation unit close to the end, the spacing length between the adjacent feed lines is longer than that of the radiation unit far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Furthermore, the extending direction of the feeding line end is perpendicular to the length direction of the radiating unit, the length of the feeding line end wraps the width of the radiating unit, and two ends of the feeding line end are respectively connected with a connecting line extending upwards/downwards.
Furthermore, a buffer part is arranged at the connection part of the feeding line end and the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part is used for reducing the reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connecting line when the electromagnetic wave signals enter the connecting line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Furthermore, the radiation unit also comprises a grounding terminal which is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
A remote antenna array comprising:
one or more of the remote antennas may be located at a distance,
the long-range antenna includes a radiation unit and a feed line:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
the feed line includes: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feed line ends.
The remote antennas are arranged side by side at the same height so that adjacent remote antennas are located at the same position along the feed line for radiating elements of the same size.
Further, projections between the adjacent radiation units perpendicular to the feed line direction do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feed line;
the thickness dimension of the radiating element near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the intervals between the adjacent radiation units in the direction of the feed line are not equal:
for the radiation unit close to the end, the spacing length between the adjacent feed lines is longer than that of the radiation unit far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Furthermore, the extending direction of the feeding line end is perpendicular to the length direction of the radiating unit, the length of the feeding line end wraps the width of the radiating unit, and two ends of the feeding line end are respectively connected with a connecting line extending upwards/downwards.
Furthermore, a buffer part is arranged at the connection part of the feeding line end and the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part is used for reducing the reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connecting line when the electromagnetic wave signals enter the connecting line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Furthermore, the radiation unit also comprises a grounding terminal which is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
A radar made using the antenna array, comprising:
the radar antenna comprises one or more remote antenna arrays, a radar chip and a wiring terminal, wherein the remote antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the remote antenna array comprises one or more remote antennas, said remote antennas comprising radiating elements and feed lines:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
the feed line includes: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feed line ends.
The remote antennas are arranged side by side at the same height so that adjacent remote antennas are located at the same position along the feed line for radiating elements of the same size.
Further, projections between the adjacent radiation units perpendicular to the feed line direction do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feed line;
the thickness dimension of the radiating element near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the intervals between the adjacent radiation units in the direction of the feed line are not equal:
for the radiation unit close to the end, the spacing length between the adjacent feed lines is longer than that of the radiation unit far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Furthermore, the extending direction of the feeding line end is perpendicular to the length direction of the radiating unit, the length of the feeding line end wraps the width of the radiating unit, and two ends of the feeding line end are respectively connected with a connecting line extending upwards/downwards.
Furthermore, a buffer part is arranged at the connection part of the feeding line end and the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part is used for reducing the reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connecting line when the electromagnetic wave signals enter the connecting line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Furthermore, the radiation unit also comprises a grounding terminal which is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
As described above, the present invention has the following advantageous effects:
(1) the invention can realize narrower frequency band response and longer-distance coverage range under the condition of not increasing the area.
(2) The invention can greatly reduce the physical size of the antenna, can increase or reduce the wave beam of the antenna, and has more flexible adjustment, because the antenna synthesis mode adopts a mode of half wavelength or shorter in a short distance, the common antenna generally needs more than one wavelength or more size. Therefore, the antenna can reduce the area of the PCB, reduce the cost and achieve the same electrical performance.
(3) The invention can realize wider frequency band response without increasing large area, because the resonant frequency of each radiator is different, the invention can achieve the purpose of widening bandwidth, thereby effectively using communication and radar systems and reducing cost.
(4) The antenna of the invention can use the radiation unit not limited to the horizontal polarization antenna, but also can be applied to the vertical polarization antenna, various oblique polarization antennas, including various circular polarization and elliptical polarization antennas, and the like, and the antenna array parameters can be adjusted by using the mode.
(5) The adjustment of the reflection branches at the tail end of the antenna is not only limited to the adjustment of the length of the radiation patch at the tail end, but also applicable to all modes which can realize less tail end current, the realization mode is not limited as long as the reflection caused by the tail end can be eliminated, and the beam direction and the frequency band characteristic of the antenna can be changed by adjusting the state of the tail end, which is the right characteristic of the invention.
(6) The shape of the antenna of the invention is not fixed on two sides or a plurality of sides, and can be any shape, and the purpose of antenna array synthesis can be achieved, which belongs to the scope of right.
(7) The included angle between the antenna and the feeder line can be any value, most of the adjusting parameters are concentrated on the beam width and the like, but the adjusting angle is not the only way and can be realized by connecting two points in a mode of various shapes, and all the claims are included.
(8) The antenna is also suitable for the synthesis of multi-column antennas, and the multi-column antennas can be the combination of horizontal, vertical and upper and lower 3D spaces and can be realized by using the similar mode.
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 shows a schematic diagram of a conventional antenna as a design.
Fig. 2 shows a rear view of a conventional antenna as a design.
Fig. 3 is a schematic diagram of a conventional antenna according to the second embodiment.
Fig. 4 is a rear view of a conventional antenna according to the second embodiment.
Fig. 5 is a schematic diagram of a remote antenna according to the present invention.
Fig. 6 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 7 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 8 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 9 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 10 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 11 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
Fig. 12 is a schematic diagram of a remote antenna according to another embodiment of the present invention.
In the figure:
1-a radiating element; 2-a feed line; 21-connecting lines; 22-feed line end; 3-material; 4-impedance transformation section; 5-a terminal radiating element; 6-ground terminal.
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 5 to 12 of the drawings,
a remote antenna, comprising:
the radiation units 1 are used for transmitting/receiving electromagnetic wave signals, and the radiation units 1 are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines 2, the radiation units 1 are distributed on two sides of the feed lines 2, and a radiation unit 1 on the different side is arranged between two adjacent radiation units 1 on the same side of the feed line 2;
a feed line 2 comprising:
a feed line end group including a plurality of feed line ends 22, each of the feed line ends 22 being provided at a position in contact with the radiation unit for connecting the radiation unit and the feed line;
a connection line group including a plurality of connection lines 21, each of the connection lines 21 being for connecting adjacent two feeding line ends 22;
the relative angle between the feeding line end 22 and the connecting line 21 is non-vertically arranged and/or non-horizontally arranged;
the length of the connecting line 21 is longer than the length of the interval between the adjacent feeding line ends 22.
Further, the projections between the adjacent radiation units 1 in the direction perpendicular to the feed line 2 do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit 1 close to the system is smaller than that of the radiation unit in the middle of the feed line 2;
the thickness dimension of the radiating element 1 near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line 2.
Further, the spacing between the adjacent radiating elements 1 in the direction of the feed line 2 is not equal:
for the radiation element 5 near the end, the length of the interval between the adjacent feed lines thereof is longer than that of the radiation element far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Further, the extending direction of the feeding line end 22 is perpendicular to the length direction of the radiation unit 1, the length of the feeding line end 22 wraps the width of the radiation unit 1, and both ends of the feeding line end 22 are respectively connected with the connecting lines 21 extending upwards/downwards.
Further, a buffer portion is arranged at the connection position of the feeding line end 22 and the connection line 21, the feeding line end 22 and the connection line 21 are connected through the buffer portion, and the buffer portion is used for reducing reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connection line when the electromagnetic wave signals enter the connection line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section 4, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Further, the antenna also comprises a grounding terminal 6, and the grounding terminal is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
A remote antenna array comprising:
one or more of the remote antennas may be located at a distance,
the remote antenna comprises a radiating element 1 and a feed line 2:
the radiation unit 1 is used for transmitting/receiving electromagnetic wave signals and coupling the electromagnetic wave signals transmitted/received by the radiation units through a feed line, the radiation units are distributed on two sides of the feed line, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed line;
the feed line 2 includes: a feed line end group including a plurality of feed line ends 22 each provided at a position in contact with the radiation unit 1 for connecting the radiation unit 1 and the feed line 2; a connection line group including a plurality of connection lines 21, each of the connection lines 21 being for connecting adjacent two feeding line ends 22; the relative angle between the feeding line end 22 and the connecting line 21 is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feed line ends.
The remote antennas are arranged side by side at the same height so that adjacent remote antennas are located at the same position along the feed line for radiating elements of the same size.
Further, projections between the adjacent radiation units perpendicular to the feed line direction do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit 1 close to the system is smaller than that of the radiation unit in the middle of the feed line 2;
the thickness dimension of the radiating element 1 near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line 2.
Further, the spacing between the adjacent radiating elements 1 in the direction of the feed line 2 is not equal:
for the radiation element 5 near the end, the length of the interval between its adjacent feed lines 2 is greater than that of the radiation element far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Further, the extending direction of the feeding line end 22 is perpendicular to the length direction of the radiation unit 1, the length of the feeding line end 22 wraps the width of the radiation unit 1, and both ends of the feeding line end 22 are respectively connected with the connecting lines 21 extending upwards/downwards.
Further, a buffer portion is arranged at the connection position of the feeding line end 22 and the connection line 21, the feeding line end 22 and the connection line 21 are connected through the buffer portion, and the buffer portion is used for reducing reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connection line when the electromagnetic wave signals enter the connection line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section 4, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Further, the antenna also comprises a grounding terminal 6, and the grounding terminal is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
A radar made using the antenna array, comprising:
the radar antenna comprises one or more remote antenna arrays, a radar chip and a wiring terminal, wherein the remote antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the remote antenna array comprises one or more remote antennas, said remote antennas comprising radiating elements and feed lines:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
the feed line includes: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feed line ends.
The remote antennas are arranged side by side at the same height so that adjacent remote antennas are located at the same position along the feed line for radiating elements of the same size.
Further, projections between the adjacent radiation units perpendicular to the feed line direction do not overlap each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
wherein
Further, the radiating elements differ in size:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feed line;
the thickness dimension of the radiating element near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
Further, the intervals between the adjacent radiation units in the direction of the feed line are not equal:
for the radiation unit close to the end, the spacing length between the adjacent feed lines is longer than that of the radiation unit far from the end.
Further, the shape of the radiation unit is configured to conform to one or several of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
Furthermore, the extending direction of the feeding line end is perpendicular to the length direction of the radiating unit, the length of the feeding line end wraps the width of the radiating unit, and two ends of the feeding line end are respectively connected with a connecting line extending upwards/downwards.
Furthermore, a buffer part is arranged at the connection part of the feeding line end and the connecting line, the feeding line end is connected with the connecting line through the buffer part, and the buffer part is used for reducing the reflection and reduction of electromagnetic wave signals caused by the bending radian between the feeding line end and the connecting line when the electromagnetic wave signals enter the connecting line through the feeding line end.
Furthermore, the antenna also comprises an impedance transformation section, if the impedance of the antenna array is not matched with the impedance of the system, the impedance matching section is added, and the number of the impedance matching units is one or more.
Further, the conversion parameter of the impedance matching unit is 1/4 wavelength microstrip line, and the impedance transformation formula is shown as follows
Furthermore, the radiation unit also comprises a grounding terminal which is used for making a reference plane for the radiation unit.
Further, the phase difference between the adjacent radiation units is not equal:
the sum of the phase angle of the electric field or the phase angle of the current of the radiation unit and the phase angle between the adjacent radiation units is 360 degrees.
Further, the shape of the buffer part is arc-shaped or linear.
Further, when the shape of the buffer part is linear, the linear buffer part cuts off the intersection point and the included angle of the straight line belonging to the feeding line end and the straight line belonging to the connecting line based on the intersection point and the included angle, one end of the straight line can be connected with the feeding line end, and the other end of the straight line can be connected with the connecting line.
Further, when the buffer part is arc-shaped, the arc-shaped buffer part takes the line to which the feeding line end belongs and the line to which the connecting line belongs as tangent lines to form a circle, and the circular part is used for connecting the feeding line end and the connecting line end.
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 (7)
1. A remote antenna, comprising:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
a feed line, the feed line comprising:
a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line;
a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends;
the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged;
the length of the connecting line is longer than the length of the interval between the adjacent feeding line ends;
the projections of the adjacent radiation units perpendicular to the direction of the feed line are not overlapped with each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
where θ ∈ (0, 90).
2. The remote antenna of claim 1, wherein the shape of the radiating element is configured to conform to one or more of the following conditions:
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part, the extending central axis of the radiation unit body is a symmetrical central line, and the radiation unit is positioned at the single side of the symmetrical central line and is symmetrical along the symmetrical central line;
one end of the radiation unit body close to the feeder line connecting part is an initial end and extends towards one end of the radiation unit body far away from the feeder line connecting part,
if the widths are consistent along the extension direction, the widths are equal to the ideal width values determined by weighting the amplitude of the antenna array in a Taylor distribution mode;
if the width along the extension direction is inconsistent, taking the maximum width of the antenna array and making the maximum width consistent with an ideal width value determined by weighting the amplitude of the antenna array in a Taylor distribution manner;
c, the length of an extension line extending from one end of the radiation unit body close to the feeder line connecting part as an initial end to one end of the radiation unit body far away from the feeder line connecting part is based on the initial value of the length of the radiation unit body and is finely adjusted according to the frequency; the width of the radiation unit body, which is extended towards one end of the radiation unit body away from the feeder line connecting part by taking one end of the radiation unit body close to the feeder line connecting part as an initial end, is finely adjusted according to the level of the minor lobe on the basis of the initial width of the radiation unit body.
3. The remote antenna of claim 2, wherein said radiating elements are of different sizes:
the thickness dimension of the radiation unit close to the system is smaller than that of the radiation unit in the middle of the feed line;
the thickness dimension of the radiating element near the distal end is smaller than the thickness dimension of the radiating element in the middle of the feed line.
4. The remote antenna according to claim 3, wherein the extension direction of the feeding line end is perpendicular to the length direction of the radiating unit, the length of the feeding line end wraps the width of the radiating unit, and two ends of the feeding line end are respectively connected with connecting lines extending upwards/downwards.
5. The remote antenna according to claim 4, wherein a buffer portion is disposed at a connection portion of the feeding line terminal and the connection line, the feeding line terminal and the connection line are connected through the buffer portion, and the buffer portion is configured to reduce reflection and reduction of electromagnetic wave signals caused by a bending curvature between the feeding line terminal and the connection line when the electromagnetic wave signals enter the connection line through the feeding line terminal.
6. A remote antenna array, comprising:
one or more of the remote antennas may be located at a distance,
the long-range antenna includes a radiation unit and a feed line:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
the feed line includes: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feeding line ends;
the remote antennas are arranged side by side at the same height so that adjacent remote antennas are located at the same position along the feed line for radiating elements of the same size
The projections of the adjacent radiation units perpendicular to the direction of the feed line are not overlapped with each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
where θ ∈ (0, 90).
7. A radar manufactured using the antenna array, comprising:
the radar antenna comprises one or more remote antenna arrays, a radar chip and a wiring terminal, wherein the remote antenna arrays are electrically connected with the radar chip, and the radar chip is electrically connected with the wiring terminal;
the remote antenna array comprises one or more remote antennas, said remote antennas comprising radiating elements and feed lines:
the radiation units are used for transmitting/receiving electromagnetic wave signals and are coupled with the electromagnetic wave signals transmitted/received by the radiation units through feed lines, the radiation units are distributed on two sides of the feed lines, and a radiation unit on the different side is arranged between two adjacent radiation units on the same side of the feed lines;
the feed line includes: a feed line end group including a plurality of feed line ends, each of the feed line ends being disposed at a position contacting the radiation unit, for connecting the radiation unit and the feed line; a connection line group including a plurality of connection lines each for connecting adjacent two feed line ends; the relative angle between the feed line end and the connecting line is non-vertically arranged and/or non-horizontally arranged; the length of the connecting line is longer than the length of the interval between the adjacent feeding line ends;
the remote antennas are arranged side by side at the same height, so that the positions of radiating elements of the same size on adjacent remote antennas along the feeding line are the same;
the projections of the adjacent radiation units perpendicular to the direction of the feed line are not overlapped with each other:
and the projection distance D of the central points of the adjacent radiation units in the direction of the feed line meets the following range:
where θ ∈ (0, 90).
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| CN201921861886.3U CN211957900U (en) | 2019-10-30 | 2019-10-30 | Long-distance antenna, antenna array and radar applying antenna array |
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| CN201921861886.3U CN211957900U (en) | 2019-10-30 | 2019-10-30 | Long-distance antenna, antenna array and radar applying antenna array |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635970A (en) * | 2020-12-02 | 2021-04-09 | 北京安石科技有限公司 | Shell seeker positioning antenna and positioning method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635970A (en) * | 2020-12-02 | 2021-04-09 | 北京安石科技有限公司 | Shell seeker positioning antenna and positioning method |
| 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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