CN112164869B - Antenna, low-frequency radiation unit and radiation arm - Google Patents
Antenna, low-frequency radiation unit and radiation arm Download PDFInfo
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- CN112164869B CN112164869B CN202011020105.5A CN202011020105A CN112164869B CN 112164869 B CN112164869 B CN 112164869B CN 202011020105 A CN202011020105 A CN 202011020105A CN 112164869 B CN112164869 B CN 112164869B
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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
- H01Q1/50—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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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Abstract
The invention relates to an antenna, a low-frequency radiation unit and a radiation arm, wherein the radiation arm comprises a radiation body, the radiation body is provided with a feed end, a tail end arranged opposite to the feed end at intervals, and a conductor section arranged between the feed end and the tail end, a scattering suppression structure is arranged in the contour region of the conductor section, the scattering suppression structure is provided with a current transmission path arranged corresponding to the conductor section, and the current transmission path is continuously arranged. The scattering suppression structure can suppress the intensity of scattering signals, reduce the influence of the scattering signals on the performance indexes of the high-frequency radiation unit, reduce the influence on the impedance characteristic of the low-frequency radiation unit and help to keep the good matching characteristic of the low-frequency radiation unit.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to an antenna, a low-frequency radiation unit and a radiation arm.
Background
With the rapid development of mobile communication technology, the antenna is further and continuously miniaturized. In order to reduce the size of the antenna, the radiation elements of different frequency bands may be close to each other to reduce the physical size of the antenna. Therefore, the high-frequency radiating unit can excite an induced current in the low-frequency radiating unit in the working state of the high-frequency radiating unit, and particularly, the induced current positioned on the radiating arm of the low-frequency radiating unit can generate a scattering signal because the induced current is positioned in an open electromagnetic field boundary, so that the performance index of the high-frequency radiating unit is influenced. Conventionally, a choke structure is connected in series in a radiation arm of a low-frequency radiation unit to suppress scattering of the high-frequency radiation unit, and thus impedance characteristics of the low-frequency radiation unit are easily deteriorated.
Disclosure of Invention
In view of this, it is necessary to provide an antenna, a low-frequency radiating element, and a radiating arm, which are directed to the problem that the impedance characteristics of the low-frequency radiating element are liable to deteriorate.
The technical scheme is as follows:
in one aspect, a radiation arm is provided, which includes a radiation body, the radiation body is provided with a feeding end, a tail end opposite to the feeding end and arranged at an interval, and a conductor segment arranged between the feeding end and the tail end, a scattering suppression structure is arranged in a contour region of the conductor segment, the scattering suppression structure is provided with a current transmission path corresponding to the conductor segment, and the current transmission path is continuously arranged.
When the radiation arm is used, the feed end of the radiation body is electrically connected with the feed structures such as the feed sheet, so that current can flow from the feed end to the tail end, and corresponding signals can be radiated. The scattering suppression structure arranged in the contour region of the conductor segment is utilized, so that the generation of scattering signals can be suppressed, and further, the performance index of the high-frequency radiation unit cannot be influenced; meanwhile, based on the fact that the distribution characteristic of the current in the radiation body is strong at the outer side and weak in the middle, the scattering suppression structure is arranged in the outline area of the conductor section and is provided with a current transmission path corresponding to the conductor section, and the current transmission path is continuously arranged, so that the communication path with strong current in the radiation body is kept unchanged, the scattering suppression structure can suppress the intensity of a scattering signal and reduce the influence of the scattering signal on the performance index of a high-frequency radiation unit, the influence on the impedance characteristic of a low-frequency radiation unit can be reduced, and the low-frequency radiation unit can be kept with good matching characteristic.
The technical solution is further explained below:
in one embodiment, the scattering suppression structure includes a first hollow-out groove and a conductor branch disposed in the first hollow-out groove, the first hollow-out groove has a first inner wall profile disposed corresponding to and continuously disposed with the conductor segment, the current transmission path includes the first inner wall profile, the conductor branch is disposed along the length direction of the radiation arm, one end of the conductor branch is electrically connected with the inner wall of the first hollow-out groove, and the other end of the conductor branch is spaced from the inner wall of the first hollow-out groove.
In one embodiment, the number of the conductor branches is at least two, and at least two of the conductor branches are arranged in one first hollow-out groove at intervals.
In one embodiment, the first hollow-out groove has a first inner wall and a second inner wall which are oppositely arranged at intervals, one end of each of the at least two conductor branches is electrically connected with the first inner wall, and the other end of each of the at least two conductor branches is arranged at intervals with the second inner wall; or one end of each of the at least two conductor branches is electrically connected with the second inner wall, and the other end of each of the at least two conductor branches is arranged at an interval with the first inner wall; or one end of at least one conductor branch is electrically connected with the first inner wall, and the other end of the conductor branch is arranged at an interval with the second inner wall, and one end of at least one conductor branch is electrically connected with the second inner wall, and the other end of the conductor branch is arranged at an interval with the first inner wall.
In one embodiment, the first hollow-out groove penetrates through the tail end or is arranged at a distance from the tail end.
In one embodiment, the other end of the conductor branch is further provided with a bent branch arranged towards one end of the conductor branch.
In one embodiment, the side of the conductor branch is further provided with an impedance change branch.
In one embodiment, along the length direction of the radiation arm, at least two first hollow-out grooves are arranged in the contour area of the conductor segment at intervals, and each first hollow-out groove is provided with the conductor branch.
In one embodiment, the scattering suppression structure further includes a second hollow-out groove having a second inner wall profile disposed corresponding to and continuously disposed with the conductor segment, the current transmission path includes the second inner wall profile, and the second hollow-out groove is disposed between two adjacent first hollow-out grooves.
In one embodiment, the scattering suppression structure further includes a transmission branch disposed in the second hollow-out groove, the transmission branch is disposed along a length direction of the radiation arm, and two ends of the transmission branch are electrically connected to two opposite inner walls of the second hollow-out groove, respectively.
In one embodiment, the number of the transmission branches is at least two, and at least two of the transmission branches are arranged in one of the second hollow-out grooves at intervals.
In one embodiment, the radiating body comprises one of a circuit board, a sheet metal part, or a metal die casting.
In another aspect, a low frequency radiating element is provided, comprising the radiating arm.
The low-frequency radiation unit of the embodiment can suppress the generation of scattering signals by using the scattering suppression structure on the radiation arm, so that the performance index of the high-frequency radiation unit is not affected; in addition, the scattering suppression structure is arranged in the contour region of the conductor segment of the radiation arm, so that the communication path with stronger current in the radiation arm is kept unchanged, the scattering suppression structure suppresses the scattering signal and simultaneously does not influence the impedance characteristic, and the low-frequency radiation unit is facilitated to ensure good matching characteristic.
In one embodiment, the number of the radiation arms is at least two, and at least two radiation arms are oppositely arranged at intervals to form at least one pair of dipoles; or at least four radiating arms are arranged into a radiating ring.
In still another aspect, an antenna is provided, which includes the low frequency radiation unit.
The antenna of the embodiment can inhibit the generation of scattering signals, cannot influence the performance index of the high-frequency radiation unit, cannot influence the impedance characteristic, and is beneficial to ensuring good matching characteristic of the low-frequency radiation unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a radiating arm according to an embodiment;
FIG. 2 is a schematic diagram of an embodiment of a scatter-suppressing structure of the radiation arm of FIG. 1;
FIG. 3 is an equivalent circuit diagram of a scatter suppression structure of the radiating arm of FIG. 2;
FIG. 4 is a schematic diagram of the scattering suppression structure of the radiating arm of FIG. 1 including a conductive stub;
FIG. 5 is a schematic diagram of the scattering suppression structure of the radiating arm of FIG. 1 including two conductor branches;
FIG. 6 is a schematic structural diagram of an embodiment in which the scattering suppression structure of the radiation arm of FIG. 1 includes three first hollow-out grooves;
FIG. 7 is a schematic structural diagram of another embodiment in which the scattering suppression structure of the radiation arm of FIG. 1 includes three first hollow-out grooves;
FIG. 8 is a schematic diagram of another embodiment of a scatter-suppressing structure of the radiation arm of FIG. 1;
FIG. 9 is a schematic diagram of a further embodiment of a scatter suppressing structure of the radiation arm of FIG. 1;
FIG. 10 is a schematic diagram of the scatter-suppressing structure of the radiating arm of FIG. 9 including a transmission branch;
FIG. 11 is a schematic diagram of the scatter-suppressing structure of the radiating arm of FIG. 9 including two transmission branches;
FIG. 12 is a schematic view of a scattering suppression structure of the radiation arm of FIG. 1 including two first hollowed-out grooves and one second hollowed-out groove;
FIG. 13 is an equivalent circuit diagram of a scatter suppression structure of the radiating arm of FIG. 12;
FIG. 14 is a simulation result of a scatter-suppressing structure of the radiating arm of FIG. 1;
fig. 15 is a schematic structural diagram of a low-frequency radiating element according to an embodiment;
fig. 16 is a schematic structural diagram of a low-frequency radiation unit according to another embodiment.
Description of reference numerals:
10. the radiation device comprises a radiation arm, 100, a radiation body, 110, a feed end, 120, a tail end, 130, a conductor segment, 131, a contour region, 140, a scattering suppression structure, 141, a current transmission path, 142, a first hollowed-out groove, 1421, a first inner wall contour, 1422, a first inner wall, 1423, a second inner wall, 143, a conductor branch, 144, a bending branch, 145, an impedance change branch, 146, a second hollowed-out groove, 1461, a second inner wall contour, 147 and a transmission branch.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
As shown in fig. 1 and 2, in one embodiment, a radiation arm 10 is provided, which can be applied to a low frequency radiation unit of an antenna. The radiating arm 10 includes a radiating body 100, the radiating body 100 is provided with a feeding end 110, a terminal end 120 opposite to the feeding end 110 and spaced apart from the feeding end, and a conductor segment 130 disposed between the feeding end 110 and the terminal end 120. The contour region 131 of the conductor segment 130 is provided with a scattering suppression structure 140 therein, the scattering suppression structure 140 has a current transmission path 141 provided corresponding to the conductor segment 130, and the current transmission path 141 is provided continuously.
In use, the radiation arm 10 of the above embodiment electrically connects the feeding end 110 of the radiation body 100 with a feeding structure such as a feeding plate, so that current can flow from the feeding end 110 to the end 120, and a corresponding signal can be radiated. By using the scattering suppression structure 140 disposed in the contour region 131 of the conductor segment 130, the generation of scattering signals can be suppressed, and further, the performance index of the high-frequency radiation unit is not affected; meanwhile, based on the fact that the distribution characteristic of the current in the radiation body 100 is strong at the outer side and weak at the middle, the scattering suppression structure 140 is disposed in the contour region 131 of the conductor segment 130, and the scattering suppression structure 140 has the current transmission path 141 disposed corresponding to the conductor segment 130, and the current transmission path 141 is disposed continuously, so that the communication path with strong current in the radiation body 100 remains unchanged, and further the scattering suppression structure 140 can suppress the intensity of the scattering signal, reduce the influence of the scattering signal on the performance index of the high-frequency radiation unit, reduce the influence on the impedance characteristic of the low-frequency radiation unit, and help to keep the good matching characteristic of the low-frequency radiation unit.
Note that the contour region 131 of the conductor segment 130 refers to a region surrounded by outer edge lines of the conductor segment 130; the current transmission path 141 is continuously disposed, which means that the edge line of the portion of the scattering suppression structure 140 for transmitting current is a continuous straight line or curved line, and is not locally concave or convex. The scattering suppression structure 140 is preferably disposed in the middle region of the conductor segment 130, so as to ensure that no influence is caused on the current transmission path, so that the scattering suppression structure 140 has a radiation function in the working frequency band, and can also achieve an effect of suppressing high-frequency scattering signals when the resonant frequency of the scattering suppression structure 140 is substantially in a high frequency band. The current transmission path 141 is disposed corresponding to the conductor segment 130, which means that a projection of the current transmission path 141 on the conductor segment 130 is a straight line. Meanwhile, it is also possible to make the outer edge line of the conductor segment 130 a continuous straight line or curved line for facilitating the processing of the radiation arm 10.
The scatter suppression structure 140 may be any structure that is disposed in the contour region 131 of the conductor segment 130 and can suppress generation of a scatter signal.
As shown in fig. 4, in one embodiment, the scattering suppression structure 140 includes a first hollow-out groove 142 and a conductive branch 143 disposed in the first hollow-out groove 142. The first hollow-out groove 142 has a first inner wall profile 1421 disposed correspondingly to and continuously disposed with the conductor segment 130, wherein the current transmission path 141 includes the first inner wall profile 1421. Thus, the first hollow-out groove 142 has a first inner wall profile 1421 continuously arranged, so that the communication path with stronger current is kept unchanged during the current flowing process. The conductor branch 143 is disposed along the length direction of the radiating arm 10, and one end of the conductor branch 143 is electrically connected to the inner wall of the first hollow-out groove 142, so as to be electrically connected to the conductor segment 130, and the other end of the conductor branch 143 is spaced from the inner wall of the first hollow-out groove 142. As shown in fig. 2 and 3, the scattering suppression structure 140 including the first hollow-out groove 142 and the conductor branch 143 is equivalent to an RLC parallel resonant circuit, so that generation of a scattering signal can be suppressed. Where Rri is the radiation and conductor losses of the scattering suppression structure 140, Lri is the inductance of the scattering suppression structure 140, Cri is the capacitance of the scattering suppression structure 140, Rci denotes the radiation and conductor losses in the "conductor segment 130 of the radiating arm 10", and the subscript r denotes the scatteringA suppressing structure 140, subscript c indicates a conductor segment 130 (indicating that the conductor segment 130 has only a transmission connection function and no scatter suppression function), subscript i indicates a serial number, ZcRepresenting the characteristic impedance, L, of the conductor branches 143 in the scattering suppression structure 140mRepresenting the physical length of the conductor branches 143 in the scattering suppression structure 140, according to transmission line theory:
where β is the propagation coefficient, the resonance frequency of the scattering suppression structure 140 is:
thus, by reducing the physical length L of the conductor branch 143mThereafter, the resonant frequency f of the scattering suppression structure 140 may be maintained by adding the capacitance C0. The first inner wall profile 1421 is disposed corresponding to the conductor segment 130, which means that a projection of the first inner wall profile 1421 on the conductor segment 130 is a straight line; the first inner wall profile 1421 is continuously disposed, which means that the first inner wall profile 1421 for transmitting current is a continuous straight line or curve, and is not locally concave or convex.
As shown in fig. 5, at least two conductor branches 143 are further provided, and at least two conductor branches 143 are disposed in one first hollow-out groove 142 at intervals. Thus, when the radiating arm 10 has a wider width to adapt to a larger bandwidth, at least two conductor branches 143 are disposed in one first hollow-out groove 142, compared with the case that only one conductor branch 143 is disposed in one first hollow-out groove 142, because the conductor branches 143 are disposed at intervals, the hollow-out area can be increased, the generation of induced current can be reduced, the interference to the source field generating scattering is small, and a better scattering suppression effect is generated. The number of the conductor branches 143 can be flexibly adjusted according to actual use conditions, for example, the number of the conductor branches can be two, three or more, and only the conductor branches 143 need to be arranged at intervals.
In addition, the arrangement form of the conductor branch 143 in the first hollow-out groove 142 can be freely selected and designed, and only the requirement of setting along the length direction of the radiation arm 10 is met, one end of the conductor branch 143 is electrically connected with the inner wall of the first hollow-out groove 142, and the other end of the conductor branch 143 is spaced from the inner wall of the first hollow-out groove 142. As shown in fig. 4 to 6, for example, the first hollow-out groove 142 has a first inner wall 1422 and a second inner wall 1423 which are oppositely spaced. One end of each of the at least two conductor branches 143 may be electrically connected to the first inner wall 1422, and the other end of each of the at least two conductor branches 143 is spaced from the second inner wall 1423; one end of each of the at least two conductor branches 143 may be electrically connected to the second inner wall 1423, and the other end of each of the at least two conductor branches 143 is spaced apart from the first inner wall 1422; alternatively, one end of the at least one conductor branch 143 is electrically connected to the first inner wall 1422 and the other end is spaced apart from the second inner wall 1423, and one end of the at least one conductor branch 143 is electrically connected to the second inner wall 1423 and the other end is spaced apart from the first inner wall 1422. Therefore, the freedom degree of design and processing is increased, and the design and processing cost is saved. The other end of the conductive branch 143 is preferably disposed close to the feeding end 110 (that is, the spaced portion between the conductive branch 143 and the sidewall of the first hollow-out groove 142 is preferably disposed close to the feeding end 110), which has a good effect of suppressing the scattered signal. In addition, the first hollow-out groove 142 can be flexibly selected to penetrate through the end 120 (as shown in fig. 7) or be arranged at an interval from the end 120, so that the degree of freedom of design or processing can be increased.
As shown in fig. 8, in one embodiment, the other end of the conductor branch 143 is further provided with a bent branch 144 of the conductor branch 143. In this way, when the length of the scattering suppression structure 140 exceeds the resonance length required by the low-frequency radiation unit, the capacitive coupling area is increased by bending the branch 144, so that the physical length of the conductor branch 143 can be shortened, and the length of the scattering suppression structure 140 can be shortened, so that the length of the scattering suppression structure 140 satisfies the resonance length required by the low-frequency radiation unit. The bent branch 144 may be disposed toward one end of the conductor branch 143, that is, the bent branch 144 extends toward the electrically connected portion between the conductor branch 143 and the inner wall of the first hollow-out groove 142, so as to increase the relative length between the other end of the conductor branch 143 and the inner wall of the first hollow-out groove 142, thereby increasing the capacitance C. The bent legs 144 may be distributed on both sides of the conductor leg 143.
As shown in fig. 8, in one embodiment, the side of the conductor branch 143 is further provided with an impedance change branch 145. Thus, the impedance change branch 145 can increase the degree of freedom of design, facilitating design and processing. Wherein the impedance change branches 145 may be distributed on both sides of the conductor branch 143.
When the frequency bandwidth of the scattering suppression structure 140 does not satisfy the requirement, the first hollow-out groove 142 and the conductor branch 143 can be flexibly arranged to satisfy the frequency bandwidth of the scattering suppression structure 140.
As shown in fig. 6 and 7, in an embodiment, at least two first hollow-out grooves 142 arranged at intervals are provided in the contour region 131 of the conductor segment 130 along the length direction (as shown in the direction a of fig. 6) of the radiation body 100, and each first hollow-out groove 142 is provided with at least one conductor branch 143, so that the scattering suppression structure 140 includes at least two first hollow-out grooves 142 and at least two conductor branches 143, thereby satisfying the frequency bandwidth of the scattering suppression structure 140. The number of the first hollow-out grooves 142 and the number of the conductor branches 143 may be flexibly adjusted and designed according to actual conditions, for example, as shown in fig. 6 and 7, there may be three first hollow-out grooves 142, and there are also three corresponding conductor branches 143, and each first hollow-out groove 142 is correspondingly provided with one conductor branch 143; of course, when there are three first hollow-out grooves 142, there may be four conductor branches 143, and two conductor branches 143 arranged at intervals may be disposed in one first hollow-out groove 142, and one conductor branch 143 is disposed in each of the other two first hollow-out grooves 142. As shown in fig. 6 and 7, when there are at least two first hollow-out grooves 142, the conductive branches 143 in each first hollow-out groove 142 can be flexibly and selectively electrically connected to the first inner wall 1422 and spaced apart from the second inner wall 1423, or can be flexibly and selectively electrically connected to the second inner wall 1423 and spaced apart from the first inner wall 1422.
As shown in fig. 9, there are at least two first hollow-out grooves 142, and the scattering suppression structure 140 further includes a second hollow-out groove 146. The second hollow-out groove 146 has a second inner wall profile 1461 disposed correspondingly and consecutively to the conductor segment 130, and the current transmission path 141 includes the second inner wall profile 1461. Thus, the second hollow-out groove 146 has a second inner wall profile 1461 continuously arranged, so that the communication path with stronger current is kept unchanged in the flowing process of the current; in combination with the continuously arranged first inner wall profile 1421, the flowing path of the cable on the whole radiating arm 10 is not affected, and the influence on the impedance characteristic of the low-frequency radiating element can be reduced. And a second hollow-out groove 146 is further disposed between two adjacent first hollow-out grooves 142. Thus, by further forming the second hollow-out groove 146, not only the scattering suppression bandwidth of the scattering suppression structure 140 can be further increased, but also the degree of freedom of design is increased, which is convenient for design and processing. The second inner wall contour 1461 is arranged corresponding to the conductor segment 130, which means that the projection of the second inner wall contour 1461 on the conductor segment 130 is a straight line; the second inner wall profile 1461 is continuously provided, which means that the second inner wall profile 1461 for transmitting current is a continuous straight line or curve, and is not locally concave or convex.
As shown in fig. 10, 12 and 13, the scattering suppression structure 140 further includes a transmission branch 147 disposed in the second hollow-out groove 146, the transmission branch 147 is disposed along the length direction of the radiation arm 10, and two ends of the transmission branch 147 are electrically connected to two opposite inner walls of the second hollow-out groove 146 respectively. Thus, the scattering suppression bandwidth of the scattering suppression structure 140 can be further increased; as shown in fig. 14, when the resonant frequency is substantially in the high frequency band, the scattering suppression structure 140 as a whole functions like a filter, so that the purpose of suppressing high frequency scattering signals can be achieved.
In addition, the number of the transmission branches 147 can be flexibly designed and adjusted according to actual use requirements. As shown in fig. 11, in one embodiment, there are at least two transmission branches 147, and the at least two transmission branches 147 are disposed in one second hollow-out groove 146 at intervals. Thus, when the radiation arm 10 has a wider width to adapt to a larger bandwidth, at least two transmission branches 147 are disposed in one second hollow-out groove 146, compared with a case where only one transmission branch 147 is disposed in one second hollow-out groove 146, since the transmission branches 147 are disposed at intervals, the hollow-out area can be increased, the generation of induced current can be reduced, the interference to the source field generating scattering is small, and a better scattering suppression effect is achieved. The number of the transmission branches 147 can be flexibly adjusted according to the actual use condition, for example, two, three or more transmission branches 147 only need to be arranged at intervals. Of course, in other embodiments, when there are at least two second hollow-out grooves 146, the number of the transmission branches 147 in each second hollow-out groove 146 may be the same, may also be different, may also be partially the same and partially different, and can be flexibly designed and adjusted according to actual situations.
On the basis of any of the above embodiments, the radiation body 100 comprises one of a circuit board, a sheet metal part or a metal die casting part. In this way, the material of the radiation body 100 can be flexibly selected according to the actual use requirement. Meanwhile, the radiation suppression structure comprises the first hollow-out groove 142, the conductor branch 143, the second hollow-out groove 146 and the transmission branch 147, so that the radiation body 100 can be processed and formed through processes such as a metal plate mode or metal die casting, and compared with a mode formed by manufacturing a circuit board, the radiation suppression structure is simpler in structure, low in processing difficulty, convenient to process and lower in cost.
As shown in fig. 15 and 16, in an embodiment, a low frequency radiation unit is further provided, which includes the radiation arm 10 of any one of the above embodiments.
The low-frequency radiation unit of the above embodiment can suppress the generation of scattering signals by using the scattering suppression structure 140 on the radiation arm 10, and further does not affect the performance index of the high-frequency radiation unit; moreover, since the scattering suppression structure 140 is disposed in the contour region 131 of the conductor segment 130 of the radiation arm 10, the communication path with strong current in the radiation arm 10 is kept unchanged, so that the scattering suppression structure 140 suppresses the scattering signal without affecting the impedance characteristic, which is helpful for the low-frequency radiation unit to ensure good matching characteristic.
The number of the radiation arms 10 can be flexibly selected according to the use situation, and the radiation arms 10 can be flexibly arranged in the low-frequency radiation unit. For example, when there are at least two radiating arms 10, at least two radiating arms 10 may be disposed at an interval to form at least one pair of dipoles, and two pairs of dipoles with orthogonal polarizations may form a low frequency radiating unit, as shown in fig. 15; at least four radiating arms 10 can be enclosed to form a radiating ring, and the four radiating rings can also form a dual-polarized low-frequency radiating unit, as shown in fig. 16. In addition, the radiation arm 10 provided with the scattering suppression structure 140 may also be combined with a radiation arm 10 not provided with the scattering suppression structure 140, just enough to be able to be assembled into one low frequency radiation unit. Moreover, the radiation suppressing structures 140 may be the same size or different sizes for the respective radiation arms 10; for example, the physical lengths of the conductor branches 143 in the first hollow-out grooves 142 may be the same or different; the physical lengths of the transmission branches 147 in the second hollow-out grooves 146 may be the same or different.
In one embodiment, there is also provided an antenna comprising the low frequency radiating element of any of the above embodiments.
The antenna of the embodiment can inhibit the generation of scattering signals, cannot influence the performance index of the high-frequency radiation unit, cannot influence the impedance characteristic, and is beneficial to ensuring good matching characteristic of the low-frequency radiation unit.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
It should also be understood that in explaining the connection relationship or the positional relationship of the elements, although not explicitly described, the connection relationship and the positional relationship are interpreted to include an error range which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A radiation arm is characterized by comprising a radiation body, wherein the radiation body is provided with a feed end, a tail end and a conductor section, the tail end is arranged opposite to the feed end at an interval, the conductor section is arranged between the feed end and the tail end, a scattering suppression structure is arranged in a contour region of the conductor section, the scattering suppression structure is provided with a current transmission path corresponding to the conductor section, and the current transmission path is continuously arranged;
the scattering suppression structure comprises a first hollow groove and a conductor branch knot arranged in the first hollow groove, the first hollow groove is provided with a first inner wall profile which is correspondingly arranged and continuously arranged with the conductor section, the current transmission path comprises the first inner wall profile, the conductor branch knot is arranged along the length direction of the radiation arm, one end of the conductor branch knot is electrically connected with the inner wall of the first hollow groove, and the other end of the conductor branch knot is arranged at an interval with the inner wall of the first hollow groove.
2. The radiating arm of claim 1, wherein there are at least two of the conductor branches, and at least two of the conductor branches are disposed in one of the first hollow-out grooves at intervals.
3. The radiating arm of claim 2, wherein the first hollowed-out groove has a first inner wall and a second inner wall that are oppositely spaced, one end of each of the at least two conductor branches is electrically connected to the first inner wall, and the other end of each of the at least two conductor branches is spaced from the second inner wall; or one end of each of the at least two conductor branches is electrically connected with the second inner wall, and the other end of each of the at least two conductor branches is arranged at an interval with the first inner wall; or one end of at least one conductor branch is electrically connected with the first inner wall, and the other end of the conductor branch is arranged at an interval with the second inner wall, and one end of at least one conductor branch is electrically connected with the second inner wall, and the other end of the conductor branch is arranged at an interval with the first inner wall.
4. The radiating arm of claim 1, wherein the first hollowed-out groove is disposed through or spaced from the tip.
5. The radiating arm of claim 1, wherein the other end of the conductor stub is further provided with a bent stub.
6. The radiating arm of claim 1, wherein the conductor stub is further provided with an impedance change stub on a side thereof.
7. The radiating arm according to claim 1, wherein at least two first hollowed-out grooves are arranged in a contour region of the conductor segment along a length direction of the radiating arm at intervals, and each first hollowed-out groove is provided with the conductor branch.
8. The radiation arm according to claim 7, wherein the scattering suppression structure further comprises a second hollow-out groove having a second inner wall profile disposed corresponding to and continuously disposed with the conductor segment, the current transmission path includes the second inner wall profile, and the second hollow-out groove is disposed between two adjacent first hollow-out grooves.
9. The radiation arm according to claim 8, wherein the scattering suppression structure further comprises a transmission branch disposed in the second hollow-out groove, the transmission branch is disposed along a length direction of the radiation arm, and two ends of the transmission branch are electrically connected to two opposite inner walls of the second hollow-out groove, respectively.
10. The radiating arm of claim 9, wherein the number of the transmission branches is at least two, and at least two of the transmission branches are disposed in one of the second hollow-out grooves at intervals.
11. The radiating arm of any one of claims 1 to 10, wherein the radiating body comprises one of a circuit board, sheet metal part, or metal die cast part.
12. A low frequency radiating element comprising a radiating arm according to any one of claims 1 to 10.
13. The low frequency radiating element of claim 12, wherein the number of the radiating arms is at least two, and at least two of the radiating arms are oppositely spaced to form at least one pair of dipoles.
14. The low frequency radiating element of claim 12, wherein at least four radiating arms are arranged in a radiating ring.
15. An antenna comprising a low frequency radiating element according to any one of claims 12 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020105.5A CN112164869B (en) | 2020-09-25 | 2020-09-25 | Antenna, low-frequency radiation unit and radiation arm |
| PCT/CN2020/140265 WO2022062241A1 (en) | 2020-09-25 | 2020-12-28 | Antenna, low-frequency radiation unit, and radiation arm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011020105.5A CN112164869B (en) | 2020-09-25 | 2020-09-25 | Antenna, low-frequency radiation unit and radiation arm |
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| CN112164869A CN112164869A (en) | 2021-01-01 |
| CN112164869B true CN112164869B (en) | 2021-09-24 |
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| CN202011020105.5A Active CN112164869B (en) | 2020-09-25 | 2020-09-25 | Antenna, low-frequency radiation unit and radiation arm |
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| WO (1) | WO2022062241A1 (en) |
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| EP3949016A4 (en) | 2019-03-26 | 2022-11-02 | CommScope Technologies LLC | Multiband base station antennas having wideband cloaked radiating elements and/or side-by-side arrays that each contain at least two different types of radiating elements |
| EP4399766A1 (en) | 2021-09-08 | 2024-07-17 | CommScope Technologies LLC | Broadband decoupling radiating elements and base station antennas having such radiating elements |
| CN113964506A (en) * | 2021-09-17 | 2022-01-21 | 华南理工大学 | Dual-polarized electromagnetic stealth antenna for pilot frequency decoupling |
| CN113964490B (en) * | 2021-09-17 | 2022-10-25 | 华南理工大学 | Broadband dual-polarization electromagnetic transparent antenna |
| CN113922049B (en) * | 2021-10-18 | 2022-09-27 | 华南理工大学 | Dual-frequency dual-polarization common-caliber base station antenna and communication equipment |
| CN114256608A (en) * | 2021-12-31 | 2022-03-29 | 广东曼克维通信科技有限公司 | Radiation arm, radiation unit and antenna |
| CN114583441A (en) * | 2022-04-01 | 2022-06-03 | 维沃移动通信有限公司 | Antenna structure and electronic device |
| CN114759347B (en) * | 2022-04-25 | 2024-09-24 | 江苏柏菲特精密科技有限公司 | Low-frequency isolation strip and antenna |
| CN116031649B (en) * | 2023-03-28 | 2023-06-23 | 普罗斯通信技术（苏州）有限公司 | Radiating element and antenna |
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| Publication number | Publication date |
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| CN112164869A (en) | 2021-01-01 |
| WO2022062241A1 (en) | 2022-03-31 |
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