Antenna device and high frequency radiation unit

Abstract

The present invention relates to an antenna device and a high-frequency radiation unit, which includes a supporting balun, four radiation arms, four coaxial lines and two feeding components. A set of two diagonal half-wave dipoles in a frame constitute a binary array, which can improve the gain of the radiation unit and form a polarization; another set of two diagonal half-wave dipoles constitute another binary array to form another polarization, and the two polarizations are orthogonal. Since the radiation arm is a shared design, the feeding point position of the radiation arm of the half-wave dipole of one polarization corresponds to the terminal of the radiation arm of the other polarization radiation unit, and the size is reduced to 0.7 times that of the half-wave dipole form in the same frequency band, thereby realizing the miniaturization of the high-frequency radiation unit. The supporting balun under the radiation arm plays a supporting role and a balanced feeding role for the four radiation arms. It is set as a diagonal binary array to improve the gain, and at the same time, the two polarizations share the radiation arm to reduce the size, and finally the gain is improved when the diameter of the radiation unit is reduced.

Description

Technical Field

[0001] The present invention relates to the field of antenna communication technology, and in particular to an antenna device and a high-frequency radiation unit. Background Art

[0002] With the continuous development of communication technology, the requirements for miniaturization and integration of base station antennas are becoming higher and higher, and the requirements for miniaturization of the radiating units of antenna devices are also put forward. Simply reducing the aperture size of the radiating unit will not only reduce the gain of the radiating unit, but also affect the circuit matching, causing the deterioration of the standing wave ratio. Summary of the invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide an antenna device and a high-frequency radiation unit, which can ensure that the aperture size is minimized without affecting the gain and standing wave ratio.

[0004] The technical scheme is as follows: a high-frequency radiation unit, comprising: a supporting balun and four radiation arms, the supporting balun is respectively connected to the four radiation arms, the four radiation arms constitute a frame, a gap is provided between the ends of two adjacent radiation arms, and the gap area between the ends of two adjacent radiation arms is defined as a gap portion; four coaxial lines and two feeding members, the first ends of the four coaxial lines are respectively arranged in one-to-one correspondence with the four gap portions of the frame, the inner core of the first end of the coaxial line is connected to one of the radiation arms of the corresponding gap portion, and the outer conductor of the first end of the coaxial line is connected to another radiation arm of the corresponding gap portion; the inner cores of the second ends of the two coaxial lines arranged corresponding to one group of diagonals of the frame are both connected to one of the feeding members, the inner cores of the second ends of the two coaxial lines arranged corresponding to another group of diagonals of the frame are both connected to another feeding member, and the outer conductors of all the second ends of the coaxial lines are connected to the supporting balun.

[0005] In the above-mentioned high-frequency radiation unit, one of the feeders is connected to one group of two coaxial lines arranged diagonally corresponding to each other in the frame, and the other feeder is connected to another group of two coaxial lines arranged diagonally corresponding to each other in the frame, and four radiation arms are fed through four coaxial lines, and two adjacent radiation arms constitute a half-wave dipole; two half-wave dipoles in one group of diagonals of the frame constitute a binary array, which can improve the gain of the radiation unit and form a polarization of the high-frequency radiation unit; two half-wave dipoles in another group of diagonals of the frame constitute another binary array, forming another polarization of the high-frequency radiation unit, and the two polarizations are orthogonal. Among them, since the radiation arm is a shared design, the feeding point position of the radiation arm of the half-wave dipole of one polarization corresponds to the terminal of the radiation arm of the other polarization radiation unit, and the size of the high-frequency radiation unit is reduced to 0.7 times that of the half-wave dipole form in the same frequency band, thereby realizing the miniaturization of the high-frequency radiation unit. The supporting balun under the radiation arm plays a supporting role and a balanced feeding role for the four radiation arms. In this way, a diagonal binary array is set up to improve the gain, and at the same time the two polarizations share the radiation arm to reduce the size, ultimately achieving an increase in gain while reducing the diameter of the radiation unit.

[0006] In one of the embodiments, the supporting balun includes a connecting portion and four supporting splits connected to the connecting portion; the four supporting splits are connected to the four radiating arms in a one-to-one correspondence, and two adjacent supporting splits are spaced apart to form a feeding slot.

[0007] In one of the embodiments, the length of the feeding slot is defined as L, where L is 1 / 4λ; the length of the radiation arm is defined as M, where M is 1 / 4λ; wherein λ is the wavelength of the center frequency of the working frequency band.

[0008] In one embodiment, the radiation surface of the radiation arm is defined as a reference surface, and the support split body includes a first support portion vertically arranged relative to the reference surface, and a second support portion inclined relative to the reference surface; one end of the first support portion is connected to the connecting portion, and the other end of the first support portion is connected to the second support portion, and the second support portion is connected to the radiation arm.

[0009] In one embodiment, two adjacent first support portions are spaced apart to form a first feeding slot, two adjacent second support portions are spaced apart to form a second feeding slot, and the first feeding slot and the second feeding slot are correspondingly connected to form the feeding slot.

[0010] In one of the embodiments, the coaxial line further includes an insulating sheath disposed outside the outer conductor, and the insulating sheath is fixed on the supporting balun.

[0011] In one of the embodiments, the supporting balun is provided with slots corresponding to the four coaxial lines one by one, and the insulating sheath is fixed in the slots by snapping.

[0012] In one of the embodiments, the feeding component is a feeding core, a feeding board, or a combined structure of a feeding core and a feeding board; the supporting balun and the four radiating arms are integrally formed by die-casting.

[0013] In one embodiment, the four radiating arms are respectively a first radiating arm, a second radiating arm, a third radiating arm and a fourth radiating arm which are arranged in sequence; the four coaxial lines are respectively a first coaxial line, a second coaxial line, a third coaxial line and a fourth coaxial line which are arranged in sequence; the two feeding elements are respectively a first feeding element and a second feeding element; the inner core of the first coaxial line and the inner core of the second coaxial line are both connected to the first radiating arm, the outer conductor of the first coaxial line is connected to the fourth radiating arm, and the outer conductor of the second coaxial line is connected to the second radiating arm; the outer conductor of the third coaxial line and the outer conductor of the fourth coaxial line are both connected to the third radiating arm, the inner core of the third coaxial line is connected to the second radiating arm, and the inner core of the fourth coaxial line is connected to the fourth radiating arm.

[0014] In one embodiment, the frame is a square frame or a circular frame.

[0015] An antenna device comprises the high-frequency radiation unit.

[0016] In the above antenna device, one feeder is connected to one set of two coaxial lines arranged diagonally corresponding to each other in the frame, and the other feeder is connected to another set of two coaxial lines arranged diagonally corresponding to each other in the frame, and four radiating arms are fed through four coaxial lines, and two adjacent radiating arms constitute a half-wave dipole; two half-wave dipoles in one set of diagonals of the frame constitute a binary array, which can improve the gain of the radiating unit and form a polarization of the high-frequency radiating unit; two half-wave dipoles in another set of diagonals of the frame constitute another binary array, forming another polarization of the high-frequency radiating unit, and the two polarizations are orthogonal. Among them, since the radiating arm is a shared design, the feeding point position of the radiating arm of a polarized half-wave dipole corresponds to the terminal of the radiating arm of another polarized radiating unit, reducing the size of the high-frequency radiating unit to 0.7 times that of the half-wave dipole in the same frequency band, thereby realizing the miniaturization of the high-frequency radiating unit. The supporting balun under the radiating arm supports and balances the feeding of the four radiating arms. In this way, a diagonal binary array is set up to improve the gain, and at the same time the two polarizations share the radiation arm to reduce the size, ultimately achieving an increase in gain while reducing the diameter of the radiation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of a high-frequency radiation unit according to an embodiment of the present invention from one viewing angle;

[0020] Figure 2 It is a schematic structural diagram of a high-frequency radiation unit from another perspective of an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a high-frequency radiation unit according to an embodiment of the present invention from another viewing angle;

[0022] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A;

[0023] Figure 5 for Figure 3 A schematic diagram of the enlarged structure at B;

[0024] Figure 6 This is a gain comparison diagram of a high-frequency radiation unit and a half-wave dipole radiation unit according to an embodiment of the present invention.

[0025] 10. Support balun; 11. Connecting part; 12. Support split; 121. First supporting part; 122. Second supporting part; 123. First feeding slot; 124. Second feeding slot; 13. Card slot; 20. Radiating arm; 201. First radiating arm; 202. Second radiating arm; 203. Third radiating arm; 204. Fourth radiating arm; 30. Coaxial line; 301. First coaxial line; 302. Second coaxial line; 303. Third coaxial line; 304. Fourth coaxial line; 31. Inner core; 32. Outer conductor; 33. Insulating sheath; 40. Feeder; 401. First feeder; 402. Second feeder. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] See also Figures 1 to 5 , Figures 1 to 3 Three different perspective structural diagrams of a high-frequency radiation unit according to an embodiment of the present invention are respectively illustrated. Figure 4 Shows Figure 3 A schematic diagram of the enlarged structure at A. Figure 5 Shows Figure 3 Schematic diagram of the enlarged structure at B. An embodiment of the present invention provides a high-frequency radiation unit, the high-frequency radiation unit includes a supporting balun 10, four radiation arms 20, four coaxial lines 30 and two feeding members 40. The supporting balun 10 is respectively connected to the four radiation arms 20, and the four radiation arms 20 constitute a frame, and a gap is provided between the ends of two adjacent radiation arms 20, and the gap area between the ends of two adjacent radiation arms 20 is defined as a gap portion. Specifically, the frame includes but is not limited to a square frame, a circular frame or other centrosymmetrical frames. The first ends of the four coaxial lines 30 are respectively arranged in one-to-one correspondence with the four gap portions of the frame, the inner core 31 of the first end of the coaxial line 30 is connected to one of the radiation arms 20 of the corresponding gap portion, and the outer conductor 32 of the first end of the coaxial line 30 is connected to another radiation arm 20 of the corresponding gap portion. The inner cores 31 of the second ends of the two coaxial lines 30 corresponding to one set of diagonals of the frame are connected to one of the feeders 40, the inner cores 31 of the second ends of the two coaxial lines 30 corresponding to the other set of diagonals of the frame are connected to another feeder 40, and the outer conductors 32 of the second ends of all the coaxial lines 30 are connected to the supporting balun 10.

[0028] It should be noted that the diagonals of the frame refer to two spacers on the diagonal line of the frame. The two spacers on the diagonal line of the frame constitute a set of diagonals. Since the frame is provided with two diagonals, there are two sets of diagonals on the frame.

[0029] In the above-mentioned high-frequency radiation unit, one feeder 40 is connected to one group of two coaxial lines 30 correspondingly arranged diagonally in the frame, and another feeder 40 is connected to another group of two coaxial lines 30 correspondingly arranged diagonally in the frame, and four radiation arms 20 are fed through four coaxial lines 30, and two adjacent radiation arms 20 constitute a half-wave dipole; two half-wave dipoles in one group of diagonals in the frame constitute a binary array, which can improve the gain of the radiation unit and form a polarization of the high-frequency radiation unit; two half-wave dipoles in another group of diagonals in the frame constitute another binary array, forming another polarization of the high-frequency radiation unit, and the two polarizations are orthogonal. Among them, since the radiation arm 20 is a shared design, the feeding point position of the radiation arm 20 of a polarized half-wave dipole corresponds to the terminal of the radiation arm 20 of another polarized radiation unit, and the size of the high-frequency radiation unit is reduced to 0.7 times that of the half-wave dipole form in the same frequency band, thereby realizing the miniaturization of the high-frequency radiation unit. The supporting balun 10 below the radiation arm 20 supports and balances the four radiation arms 20. In this way, a diagonal binary array is set to improve the gain, and at the same time, the two polarizations share the radiation arm 20 to reduce the size, and finally the gain is improved when the diameter of the radiation unit is reduced (see Figure 6 Gain comparison graph shown).

[0030] See also Figure 6 , Figure 6 FIG. 1 shows a gain comparison diagram of a high-frequency radiation unit and a half-wave dipole radiation unit according to an embodiment of the present invention. Figure 6 It can be seen that the high-frequency radiation unit of the example of the present invention has a gain increased by 0.8dB when the aperture is reduced, thus achieving the coexistence of miniaturization and high gain.

[0031] In one embodiment, the inner core 31 at the first end of the coaxial line 30 is connected to one of the radiating arms 20 by means including but not limited to welding, and the outer conductor 32 at the first end of the coaxial line 30 is connected to the other radiating arm 20 by means including but not limited to welding.

[0032] In one embodiment, the inner core 31 at the second end of the coaxial line 30 is connected to the feeder 40 by means including but not limited to welding, as long as the two can be electrically connected and assembled and fixed together, the specific electrical connection method is not limited here and can be set according to actual needs. The outer conductor 32 at the second end of the coaxial line 30 is connected to the support balun 10 by means including but not limited to welding, as long as the two can be electrically connected and assembled and fixed together, the specific electrical connection method is not limited here and can be set according to actual needs.

[0033] See also Figures 1 to 3In one embodiment, the supporting balun 10 includes a connecting portion 11 and four supporting parts 12 connected to the connecting portion 11. The four supporting parts 12 are connected to the four radiating arms 20 in a one-to-one correspondence, and two adjacent supporting parts 12 are arranged at intervals to form a feeding slot. In this way, the feeding slot plays the role of balun balanced feeding. In one embodiment, the length of the feeding slot is defined as L, and L is 1 / 4λ. Wherein λ is the wavelength of the center frequency of the working frequency band.

[0034] See also Figure 3 In one embodiment, the length of the radiation arm 20 is defined as M, where M is 1 / 4λ, where λ is the wavelength of the center frequency of the working frequency band.

[0035] See also Figures 1 to 3 In one embodiment, the radiation surface of the radiation arm 20 is defined as a reference surface (eg Figure 2 As shown in S), the support split 12 includes a first support portion 121 vertically arranged relative to the reference plane, and a second support portion 122 inclined relative to the reference plane. One end of the first support portion 121 is connected to the connecting portion 11, and the other end of the first support portion 121 is connected to the second support portion 122, and the second support portion 122 is connected to the radiation arm 20. In this way, the high-frequency radiation unit is not only provided with the second support portion 122, but also provided with the first support portion 121 vertically arranged relative to the reference plane. By, for example, adjusting the length of the first support portion 121 and / or adjusting the size of the feeder 40 arranged on the first support plate, the matching performance can be improved relatively easily. Specifically, the second support portion 122 includes two support rods, the bottom ends of the two support rods are connected to the first support portion 121, and the top ends of the two support rods are respectively connected to the two ends of the radiation arm 20 corresponding to the support split 12.

[0036] See also Figures 1 to 3 In one embodiment, two adjacent first support portions 121 are spaced apart to form a first feeding slot 123, and two adjacent second support portions 122 are spaced apart to form a second feeding slot 124. The first feeding slot 123 and the second feeding slot 124 are correspondingly connected to form a feeding slot. In this way, the balun balanced feeding effect played by the first feeding slot 123 and the second feeding slot 124 is better. The length of the first feeding slot 123 is defined as L1, and the length of the second feeding slot 124 is defined as L2. The specific lengths of L1 and L2 can be set according to actual conditions, as long as the sum of the two is equal to 1 / 4λ.

[0037] See also Figures 1 to 3 In one embodiment, the coaxial line 30 further includes an insulating sheath 33 disposed outside the outer conductor 32. The insulating sheath 33 is fixed to the supporting balun 10. In this way, the insulating sheath 33 can prevent the side wall of the outer conductor 32 of the coaxial line 30 from electrically contacting the supporting balun 10 and causing a short circuit, thereby ensuring that the index and performance of the antenna are reliable.

[0038] See also Figures 1 to 3 In one embodiment, the support balun 10 is provided with a card slot 13 corresponding to the four coaxial lines 30. The insulating sheath 33 is fixed in the card slot 13. In this way, the coaxial line 30 is fixed in the card slot 13 by card connection, and can be quickly fixedly installed on the support balun 10. Specifically, the card slot 13 is provided on the second support portion 122, and the insulating sheath 33 is fixed in the card slot 13 of the second support portion 122. Of course, the coaxial line 30 can also be fixedly installed on the support balun 10 in other ways, which is not limited here, and can be set according to actual needs.

[0039] In one embodiment, four coaxial lines 30 are disposed on four second support parts 122 in a one-to-one correspondence. Two through holes are disposed on two first support parts 121 in a one-to-one correspondence with two feeders 40, and two feeders 40 are disposed in the two through holes in a one-to-one correspondence. The two feeders 40 are used to be electrically connected to the phase shifter. In order to prevent the feeders 40 from electrically contacting the first support parts 121 and causing a short circuit, an insulating spacer is disposed between the outer wall of the feeder 40 and the inner wall of the through hole.

[0040] In one embodiment, the feeder 40 is a feed core, a feed board, or a combination of a feed core and a feed board. Thus, when the feeder 40 is a feed core, the circuit matching of the radiation unit can be adjusted by adjusting the thickness of the feed core; when the feeder 40 is a feed board, the circuit matching of the radiation unit can be adjusted by adjusting the width and thickness of the feed board.

[0041] In one embodiment, the support balun 10 and the four radiating arms 20 are integrally formed by die casting. Since the support balun 10 and the radiating arms 20 are integrally formed by die casting, the number of solder joints can be greatly reduced compared with the welding connection method, thereby ensuring the reliable index and performance of the antenna.

[0042] See also Figures 1 to 3In one embodiment, the four radiating arms 20 are respectively a first radiating arm 201, a second radiating arm 202, a third radiating arm 203 and a fourth radiating arm 204 which are arranged in sequence. The four coaxial lines 30 are respectively a first coaxial line 301, a second coaxial line 302, a third coaxial line 303 and a fourth coaxial line 304 which are arranged in sequence. The two feeding members 40 are respectively a first feeding member 401 and a second feeding member 402. The inner core 31 of the first coaxial line 301 and the inner core 31 of the second coaxial line 302 are both connected to the first radiating arm 201, the outer conductor 32 of the first coaxial line 301 is connected to the fourth radiating arm 204, and the outer conductor 32 of the second coaxial line 302 is connected to the second radiating arm 202. The outer conductor 32 of the third coaxial line 303 and the outer conductor 32 of the fourth coaxial line 304 are both connected to the third radiating arm 203, the inner core 31 of the third coaxial line 303 is connected to the second radiating arm 202, and the inner core 31 of the fourth coaxial line 304 is connected to the fourth radiating arm 204. In addition, the inner core 31 of the first coaxial line 301 and the inner core 31 of the third coaxial line 303 are connected to the first feeding member 401, the inner core 31 of the second coaxial line 302 and the inner core 31 of the fourth coaxial line 304 are connected to the second feeding member 402, and the outer conductor 32 of the first coaxial line 301, the outer conductor 32 of the second coaxial line 302, the outer conductor 32 of the third coaxial line 303, and the outer conductor 32 of the fourth coaxial line 304 are connected to the supporting balun 10.

[0043] See also Figures 1 to 3 In one embodiment, an antenna device includes the high-frequency radiation unit of any of the above embodiments.

[0044] In the above antenna device, one feeder 40 is connected to one group of two coaxial lines 30 correspondingly arranged diagonally in the frame, and another feeder 40 is connected to another group of two coaxial lines 30 correspondingly arranged diagonally in the frame, and four radiating arms 20 are fed through four coaxial lines 30, and two adjacent radiating arms 20 constitute a half-wave dipole; two half-wave dipoles in one group of diagonals in the frame constitute a binary array, which can improve the gain of the radiating unit and form a polarization of the high-frequency radiating unit; two half-wave dipoles in another group of diagonals in the frame constitute another binary array, forming another polarization of the high-frequency radiating unit, and the two polarizations are orthogonal. Among them, since the radiating arm 20 is a shared design, the feeding point position of the radiating arm 20 of a polarized half-wave dipole corresponds to the terminal of the radiating arm 20 of another polarized radiating unit, and the size of the high-frequency radiating unit is reduced to 0.7 times that of the half-wave dipole form in the same frequency band, thereby realizing the miniaturization of the high-frequency radiating unit. The supporting balun 10 below the radiating arm 20 supports and balances the four radiating arms 20. In this way, a diagonal binary array is set to improve the gain, and at the same time, the two polarizations share the radiation arm 20 to reduce the size, and finally the gain is improved when the diameter of the radiation unit is reduced (see Figure 6Gain comparison graph shown).

[0045] It should be noted that the "support split body 12" can be "a part of the connecting part 11", that is, the "support split body 12" and the "other parts of the connecting part 11" are manufactured as one piece; it can also be an independent component separable from the "other parts of the connecting part 11", that is, the "support split body 12" can be manufactured independently and then combined with the "other parts of the connecting part 11" into a whole.

[0046] It should be noted that the "radiating arm 20" can be a "part of the supporting balun 10", that is, the "radiating arm 20" and the "other parts of the supporting balun 10" are manufactured as one piece; it can also be an independent component separable from the "other parts of the supporting balun 10", that is, the "radiating arm 20" can be manufactured independently and then combined with the "other parts of the supporting balun 10" into a whole.

[0047] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A high frequency radiation unit, characterized in that: The high-frequency radiation unit comprises: A supporting balun and four radiating arms, wherein the supporting balun is connected to the four radiating arms respectively, the four radiating arms form a frame, a gap is provided between the ends of two adjacent radiating arms, and a gap area between the ends of two adjacent radiating arms is defined as a gap portion; Four coaxial lines and two feeding elements, the first ends of the four coaxial lines are respectively arranged in one-to-one correspondence with the four spacing parts of the frame, the inner core of the first end of the coaxial line is connected to one of the radiating arms of the corresponding spacing part, and the outer conductor of the first end of the coaxial line is connected to another radiating arm of the corresponding spacing part; the inner cores of the second ends of the two coaxial lines arranged corresponding to one group of diagonals of the frame are connected to one of the feeding elements, the inner cores of the second ends of the two coaxial lines arranged corresponding to another group of diagonals of the frame are connected to another feeding element, the outer conductors of the second ends of all the coaxial lines are connected to the supporting balun, two adjacent radiating arms constitute a half-wave oscillator, two half-wave oscillators of one group of diagonals of the frame constitute a binary array, and two half-wave oscillators of another group of diagonals of the frame constitute another binary array.

2. The high-frequency radiation unit according to claim 1, characterized in that: The supporting balun includes a connecting portion and four supporting split bodies connected to the connecting portion; the four supporting split bodies are connected to the four radiating arms in a one-to-one correspondence, and two adjacent supporting split bodies are spaced apart to form a feeding slot.

3. The high-frequency radiation unit according to claim 2, characterized in that: The length of the feeding slot is defined as L, which is 1 / 4λ; the length of the radiation arm is defined as M, which is 1 / 4λ; wherein λ is the wavelength of the center frequency of the working frequency band.

4. The high-frequency radiation unit according to claim 2, characterized in that: The radiation surface of the radiation arm is defined as a reference surface, and the support split includes a first support portion vertically arranged relative to the reference surface, and a second support portion inclined relative to the reference surface; one end of the first support portion is connected to the connecting portion, and the other end of the first support portion is connected to the second support portion, and the second support portion is connected to the radiation arm.

5. The high-frequency radiation unit according to claim 4, characterized in that: Two adjacent first support portions are spaced apart to form a first feeding slot, two adjacent second support portions are spaced apart to form a second feeding slot, and the first feeding slot and the second feeding slot are correspondingly connected to form the feeding slot.

6. The high-frequency radiation unit according to claim 1, characterized in that: The coaxial line further includes an insulating sheath arranged outside the outer conductor, and the insulating sheath is fixed on the supporting balun.

7. The high-frequency radiation unit according to claim 6, characterized in that: The supporting balun is provided with slots corresponding to the four coaxial lines one by one, and the insulating sheath is fixed in the slots by snap connection.

8. The high-frequency radiation unit according to claim 1, characterized in that: The feeding component is a feeding core, a feeding board or a combined structure of a feeding core and a feeding board; the supporting balun and the four radiating arms are integrally formed by die-casting.

9. The high-frequency radiation unit according to claim 1, characterized in that: The four radiating arms are respectively a first radiating arm, a second radiating arm, a third radiating arm and a fourth radiating arm which are arranged in sequence; the four coaxial lines are respectively a first coaxial line, a second coaxial line, a third coaxial line and a fourth coaxial line which are arranged in sequence; the two feeding elements are respectively a first feeding element and a second feeding element; the inner core of the first coaxial line and the inner core of the second coaxial line are both connected to the first radiating arm, the outer conductor of the first coaxial line is connected to the fourth radiating arm, and the outer conductor of the second coaxial line is connected to the second radiating arm; the outer conductor of the third coaxial line and the outer conductor of the fourth coaxial line are both connected to the third radiating arm, the inner core of the third coaxial line is connected to the second radiating arm, and the inner core of the fourth coaxial line is connected to the fourth radiating arm.

10. The high frequency radiation unit according to claim 1, characterized in that: The frame is a square frame or a circular frame.

11. An antenna device, characterized in that: The antenna device comprises the high-frequency radiation unit according to any one of claims 1 to 10.

Images