CN114256608A - Radiation arm, radiation unit and antenna - Google Patents
Radiation arm, radiation unit and antenna Download PDFInfo
- Publication number
- CN114256608A CN114256608A CN202111679543.7A CN202111679543A CN114256608A CN 114256608 A CN114256608 A CN 114256608A CN 202111679543 A CN202111679543 A CN 202111679543A CN 114256608 A CN114256608 A CN 114256608A
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- hollow
- radiating
- groove
- radiation
- arm
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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
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Abstract
The invention discloses a radiation arm, a radiation unit and an antenna, comprising: the lead comprises a conductor section and at least one hollow structure arranged in the conductor section; one end of the conductor section is a feed end, and the other end of the conductor section is a tail end; the hollowed-out structures are arranged between the feed end and the tail end at intervals, and the distance between every two adjacent hollowed-out structures is a first preset distance; the hollow structure comprises a plurality of hollow grooves which are connected into an integrated hollow structure; the hollow structure comprises a first hollow groove, a second hollow groove and a third hollow groove, the first hollow groove and the third hollow groove are parallel to the length direction of the conductor section, and two ends of the second hollow groove are respectively and vertically connected with the first hollow groove and the third hollow groove. According to the embodiment of the invention, at least one hollow structure is arranged in the conductor section, and the hollow structure comprises a plurality of hollow grooves, so that the transmission path of high-frequency current can be effectively blocked, meanwhile, the transmission path of low-frequency current is ensured not to be blocked, and the difficulty of impedance matching can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a radiation arm, a radiation unit and an antenna.
Background
With the development of mobile communication, the base station antenna also tends to be miniaturized and integrated, and meanwhile, the requirements of multiple systems must be met to ensure the communication requirements of different types of users, which means that radiation units with different frequencies exist in a certain physical space of the base station antenna. When the volume of the antenna is further reduced, the radiating elements with different frequencies are required to be further close to each other, and even located in the near field region of each other, so that strong interference can be generated between the radiating elements and the near field region. For example, when the high frequency element is close to the low frequency element, the electromagnetic wave radiated from the high frequency element may cause scattering on the radiation arm of the low frequency element due to the presence of the low frequency element. The secondary radiation of the scattered waves is superposed with the directional diagram of the high-frequency unit, so that the directional diagram of the high-frequency unit is distorted, the directional diagram of the whole high-frequency array is distorted, and the sector coverage effect is influenced. Since the scattering problem is essentially induced currents generated by the radiation field of the high frequency element on the radiation arms of the low frequency element, this means that reducing the high frequency induced currents on the radiation arms of the low frequency element reduces the secondary radiation caused by the low frequency element.
The existing radiation arm does not have a structure capable of suppressing high-frequency scattering, and when the existing radiation arm is in a high-frequency field, high-frequency induced current generated on the existing radiation arm can generate remarkable secondary radiation, so that a high-frequency array directional diagram is deteriorated.
Disclosure of Invention
In order to solve the above problems, the present invention provides a radiation arm, a radiation unit, and an antenna, which solve the technical problem that the conventional radiation arm cannot effectively reduce the induced current generated by the high frequency unit on the low frequency radiation arm, resulting in the deterioration of the high frequency array pattern.
An embodiment of the present invention provides a radiation arm, including:
the lead comprises a conductor section and at least one hollowed-out structure arranged in the conductor section;
one end of the conductor section is a feed end, and the other end of the conductor section is a tail end; the hollowed-out structures are arranged between the feed end and the tail end at intervals, and the distance between every two adjacent hollowed-out structures is a first preset distance; the hollow structure comprises a plurality of hollow grooves which are connected into an integrated hollow structure;
the hollow structure comprises a first hollow groove, a second hollow groove and a third hollow groove, the first hollow groove and the third hollow groove are parallel to the length direction of the conductor section, and two ends of the second hollow groove are respectively and vertically connected with the first hollow groove and the third hollow groove.
Furthermore, the length of the first hollow-out groove is the same as that of the third hollow-out groove, and two ends of the second hollow-out groove are respectively connected with the middle points of the first hollow-out groove and the third hollow-out groove.
Further, the radiating arm comprises one of a circuit board type radiating arm, a sheet metal type radiating arm and a die casting type radiating arm.
Further, the height of the second hollow-out groove is a preset value.
Furthermore, the projection of the hollow structure on the plane is a preset shape, and the preset shape comprises an H shape.
An embodiment of the present invention provides a radiation unit, including the radiation arms as described above, where the number of the radiation arms is four, the four radiation arms include a first radiation arm pair and a second radiation arm pair, the first radiation arm pair and the second radiation arm pair are perpendicular, and midpoints of the first radiation arm and the second radiation arm are coincident; the first radiation arm pair is composed of two radiation arms with opposite feed ends, and the second radiation arm pair is composed of two radiation arms with opposite feed ends.
One implementation of the invention provides a radiation unit, which comprises the radiation arm as described above, wherein a plurality of the radiation arms form four closed rectangular radiation arms, and the four rectangular radiation arms are symmetrically arranged at intervals as the radiation unit.
An embodiment of the present invention provides an antenna including the radiation element as described above.
According to the embodiment of the invention, at least one hollow structure is arranged in the conductor section, the hollow structure comprises a plurality of hollow grooves, the hollow grooves are connected into an integrated hollow structure, so that a transmission path of high-frequency current can be effectively blocked, the transmission path of low-frequency current is ensured not to be blocked, and the hollow structures are arranged in the conductor section at a certain distance, so that the influence of the existence of a low-frequency unit on the high-frequency direction is reduced, the input impedance of low frequency is not obviously deteriorated, and the difficulty of impedance matching can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a radiation arm provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radiation unit provided in an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a radiation unit provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a radiation unit provided in an embodiment of the present invention;
FIG. 5 is a high frequency element pattern provided by an embodiment of the present invention;
fig. 6 is a return loss diagram of a low frequency unit according to an embodiment of the present invention.
Wherein the reference numbers in the drawings of the specification are as follows:
10. a conductor section; 21. a first hollow-out groove; 22. a second hollow-out groove; 23. and a third hollow-out groove.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the invention provides a radiation arm, including:
a conductor segment 10 and at least one hollowed-out structure arranged in the conductor segment 10;
in the embodiment of the present invention, the conductor segment 10 is continuously disposed on the radiation arm body, wherein the conductor segment 10 may have multiple segments, and the radiation arm of the embodiment of the present invention includes at least one conductor segment 10. At least one hollow structure is arranged in the conductor segment 10 in the embodiment of the present invention.
One end of the conductor segment 10 is a feed end, and the other end is a tail end; the hollowed-out structures are arranged between the feed end and the tail end at intervals, and the distance between every two adjacent hollowed-out structures is a first preset distance; the hollow structure comprises a plurality of hollow grooves which are connected into an integrated hollow structure;
in the embodiment of the present invention, the distance between the hollow structures is a preset distance, when the length of the conductor section 10 reaches a certain length, a plurality of hollow structures need to be arranged in the conductor section 10, and in order to effectively block the transmission path of the high-frequency current and ensure that the transmission path of the low-frequency current is not blocked, the plurality of hollow structures are arranged in the conductor section 10 at a certain distance, so as to reduce the influence of the existence of the low-frequency unit on the high-frequency direction, effectively reduce the induced current generated by the high-frequency unit on the low-frequency radiating arm, and enable the input impedance of the low frequency not to be obviously deteriorated, thereby effectively reducing the difficulty of impedance matching.
The hollow structure comprises a first hollow groove 21, a second hollow groove 22 and a third hollow groove 23, the first hollow groove 21 and the third hollow groove 23 are all parallel to the length direction of the conductor section 10, and two ends of the second hollow groove 22 are respectively and vertically connected with the first hollow groove 21 and the third hollow groove 23.
In a specific implementation mode, three hollowed-out grooves form an H-shaped hollowed-out structure, and a transmission path of high-frequency current can be effectively blocked through the hollowed-out structure, so that the transmission path of low-frequency current is not blocked.
Alternatively, the hollow structure in the embodiment of the present invention may also have other shapes, for example, two ends of the second hollow groove 22 are respectively disposed at 1/3 of the length of the first hollow groove 21 and the third hollow groove 23, or are respectively disposed at 1/3 of the length of the first hollow groove 21 and the third hollow groove 23. For example, the deformation of the first, second, and third hollow grooves 21, 22, and 23, and the like.
Further, the length of the first hollow-out groove 21 is the same as that of the third hollow-out groove 23, and two ends of the second hollow-out groove 22 are respectively connected with the middle points of the first hollow-out groove 21 and the third hollow-out groove 23.
In the embodiment of the present invention, the lengths of the first hollow-out groove 21 and the third hollow-out groove 23 may be set according to requirements, and may be the same or different. The connection positions of the second hollow-out groove 22, the third hollow-out groove 23 and the first hollow-out groove 21 can be different, and the three hollow-out grooves form an integrated hollow-out structure, so that the influence of the existence of a low-frequency unit on a high-frequency directional diagram can be reduced, and the input impedance of low frequency cannot generate obvious deterioration.
Further, the radiating arm includes one of a circuit board-form radiating arm, a sheet metal-form radiating arm, and a die-cast-form radiating arm.
In the embodiment of the present invention, the radiating arm may be a radiating arm in a circuit board form, and the radiating arm may be manufactured in a sheet metal form or a die casting form.
In the embodiment of the present invention, the sizes of the first hollow-out groove 21, the second hollow-out groove 22, and the third hollow-out groove 23 may be set as needed, and by providing a hollow-out structure formed by three hollow-out grooves on the radiation arm, the embodiment of the present invention can effectively suppress scattering in the whole high frequency band, thereby achieving an optimal decoupling effect.
Furthermore, the projection of the hollow structure on the plane is in a preset shape, and the preset shape comprises an H shape.
In the embodiment of the invention, the projection of the hollow structure on the plane has a certain shape, and the projection shapes of different hollow structures on the plane are different. In the embodiment of the invention, the projection of the hollow structure on the plane is H-shaped.
Fig. 5 is a diagram of a high-frequency unit directional diagram according to an embodiment of the present invention, and fig. 6 is a diagram of a return loss of a low-frequency unit according to an embodiment of the present invention.
The embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, at least one hollow structure is arranged in the conductor section 10, the hollow structure comprises a plurality of hollow grooves, the hollow grooves are connected into an integrated hollow structure, a transmission path of high-frequency current can be effectively blocked, the transmission path of low-frequency current is ensured not to be blocked, and the hollow structures are arranged in the conductor section 10 at a certain distance, so that the influence of the existence of a low-frequency unit on the high-frequency direction is reduced, the input impedance of low frequency is not obviously deteriorated, and the difficulty of impedance matching can be effectively reduced.
Referring to fig. 2, an embodiment of the present invention provides a radiation unit, including the above-mentioned four radiation arms, where the four radiation arms include a first radiation arm pair and a second radiation arm pair, the first radiation arm pair and the second radiation arm pair are perpendicular, and midpoints of the first radiation arm and the second radiation arm are overlapped; the first radiation arm pair is composed of two radiation arms with opposite feed ends, and the second radiation arm pair is composed of two radiation arms with opposite feed ends.
Referring to fig. 3, an embodiment of the present invention provides a radiation unit, which includes the radiation arm as described above, and a plurality of radiation arms constitute four enclosed rectangular radiation arms, and the four rectangular radiation arms are symmetrically spaced to serve as the radiation unit.
Referring to fig. 4, an embodiment of the present invention provides a radiating element, which includes a plurality of radiating arms as described above, and the plurality of radiating arms are electrically connected to each other and symmetrically disposed to form a radiating element.
An embodiment of the present invention provides an antenna including the radiation element as described above.
The radiation unit and the radiation arm in the embodiment of the invention both comprise the radiation arm, the transmission path of the high-frequency current is blocked through the integrated hollow structure in the radiation arm, the transmission path of the low-frequency current is ensured not to be blocked, and the hollow structures in the conductor section 10 are arranged in the conductor section 10 at a certain distance, so that the influence of the low-frequency unit on the high-frequency direction is reduced, the input impedance of the low frequency is not obviously deteriorated, and the difficulty of impedance matching can be effectively reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A radiating arm, comprising:
the lead comprises a conductor section and at least one hollowed-out structure arranged in the conductor section;
one end of the conductor section is a feed end, and the other end of the conductor section is a tail end; the hollowed-out structures are arranged between the feed end and the tail end at intervals, and the distance between every two adjacent hollowed-out structures is a first preset distance; the hollow structure comprises a plurality of hollow grooves which are connected into an integrated hollow structure;
the hollow structure comprises a first hollow groove, a second hollow groove and a third hollow groove, the first hollow groove and the third hollow groove are parallel to the length direction of the conductor section, and two ends of the second hollow groove are respectively and vertically connected with the first hollow groove and the third hollow groove.
2. The radiating arm of claim 1, wherein the first hollowed-out groove has the same length as the third hollowed-out groove, and two ends of the second hollowed-out groove are respectively connected to the middle points of the first hollowed-out groove and the third hollowed-out groove.
3. The radiating arm of claim 1, wherein the radiating arm comprises one of a circuit board form radiating arm, a sheet metal form radiating arm, and a die cast form radiating arm.
4. The radiating arm of claim 1, wherein the height of the second hollowed-out groove is a preset value.
5. The radiation arm of claim 1, wherein the projection of the hollowed-out structure on a plane is a preset shape, and the preset shape comprises an H shape.
6. A radiating element comprising the radiating arm of any one of claims 1-4, wherein the radiating arms are four, the four radiating arms comprise a first radiating arm pair and a second radiating arm pair, the first radiating arm pair and the second radiating arm pair are perpendicular, and midpoints of the first radiating arm and the second radiating arm are coincident; the first radiation arm pair is composed of two radiation arms with opposite feed ends, and the second radiation arm pair is composed of two radiation arms with opposite feed ends.
7. A radiating element, comprising the radiating arm as claimed in any one of claims 1 to 4, wherein a plurality of the radiating arms form four closed rectangular radiating arms, and the four rectangular radiating arms are symmetrically arranged at intervals as the radiating element.
8. An antenna comprising a radiating element according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679543.7A CN114256608A (en) | 2021-12-31 | 2021-12-31 | Radiation arm, radiation unit and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679543.7A CN114256608A (en) | 2021-12-31 | 2021-12-31 | Radiation arm, radiation unit and antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114256608A true CN114256608A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111679543.7A Pending CN114256608A (en) | 2021-12-31 | 2021-12-31 | Radiation arm, radiation unit and antenna |
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| CN (1) | CN114256608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031649A (en) * | 2023-03-28 | 2023-04-28 | 普罗斯通信技术（苏州）有限公司 | Radiating element and antenna |
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2021
- 2021-12-31 CN CN202111679543.7A patent/CN114256608A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031649A (en) * | 2023-03-28 | 2023-04-28 | 普罗斯通信技术（苏州）有限公司 | Radiating element and antenna |
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