Integrated common-caliber radiation unit and antenna

Abstract

The utility model relates to the technical field of mobile communication antennas, and discloses an integrated common-caliber radiation unit and an antenna, comprising a low-frequency radiation unit and a high-frequency radiation unit, one end of each low-frequency feed balun and one end of each high-frequency feed balun are electrically connected with the dipole of the corresponding frequency band, the other ends of the low-frequency feed balun and the high-frequency feed balun are mutually connected into a whole to form a shared base, and a feed port of the high-frequency radiation unit is integrally integrated on the back of the shared base; the high-frequency radiation arms of the high-frequency radiation unit and the low-frequency feed balun structures of the low-frequency radiation unit are staggered and do not interfere with each other in the orthographic projection direction; according to the utility model, the integrated die-casting molding of the common-caliber radiation unit is realized, the part composition of the common-caliber high-low frequency radiation unit is reduced, the assembly process of embedding the high-frequency radiation unit into the caliber of the low-frequency radiation unit and the positioning assembly are omitted, the assembly is simpler, the weight of the radiation unit is lighter, and the intermodulation hidden danger points are fewer; and indexes are easier to control.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile communication antennas, and in particular to an integrated common-aperture radiation unit and an antenna. Background Art

[0002] With the development of mobile communication technology, the integration of multiple systems and multiple standards within a single antenna has become a mainstream system requirement and antenna design configuration. Due to the limited frontal area, multi-system integrated antennas must meet the requirements of integrating multiple arrays into a single antenna while also meeting the requirements of a small cross-section. The antenna's internal structure is compact. At the same time, the multiple standard arrays are composed of multiple radiating elements. The cumbersome assembly process and the numerous metal interconnections make assembly complex and the antenna's performance difficult to achieve. In particular, the antenna's third-order intermodulation performance is prone to failure due to the numerous metal interconnections. Therefore, the development of a high-performance, miniaturized, and integrated common-aperture radiating element is urgently needed.

[0003] Conventional co-aperture radiating units of different frequency bands are coaxially nested. Two radiating units are clamped together by non-metallic plastic parts and then fastened to the reflector with screws, or the low-frequency radiating unit is first fastened to the reflector and then the high-frequency radiating unit is embedded in the low-frequency aperture and fastened to the reflector with screws. There are many assembly processes, many metal interconnection points, and they are complex. At the same time, different standard radiating units are independently molded with many molding materials and a large electroplating area. As a result, the antenna assembly process is long, the cost is high, the indicators are difficult to control, the weight is heavy, and the pollution is greater. Utility Model Content

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology and propose an integrated common-aperture radiation unit and antenna, which can simplify the structure of the common-aperture radiation unit, simplify the assembly process, improve the assembly efficiency, and at the same time make the weight lighter and the indicators easier to control.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides an integrated common-aperture radiation unit, including a low-frequency radiation unit and a high-frequency radiation unit;

[0007] The low-frequency radiation unit includes two pairs of four orthogonally polarized low-frequency dipoles, each of the low-frequency dipoles is correspondingly connected to a low-frequency feeding balun, and each of the low-frequency dipoles includes a pair of low-frequency radiation arms;

[0008] The high-frequency radiation unit includes two orthogonally polarized high-frequency dipoles and a feeding port, each of the high-frequency dipoles is respectively connected to a high-frequency feeding balun, each of the high-frequency dipoles includes a pair of high-frequency radiation arms, and the high-frequency radiation unit is located within the physical aperture enclosed by the four low-frequency dipoles of the low-frequency radiation unit;

[0009] One end of each of the low-frequency feeding balun and the high-frequency feeding balun is electrically connected to the dipole of the corresponding frequency band, and the other ends are connected to each other to form a common base, and the back of the common base is integrated with the feeding port of the high-frequency radiating unit;

[0010] The high-frequency radiation arm of the high-frequency radiation unit and the low-frequency feeding balun structure of the low-frequency radiation unit are staggered, and do not interfere with each other in the orthographic projection direction.

[0011] Furthermore, the high-frequency radiation unit further includes two feeding plates, each high-frequency feeding balun of the high-frequency radiation unit is designed as two symmetrical semi-cylinders, the two high-frequency feeding baluns form a hollow accommodating cavity, the accommodating cavity passes through the common base and is connected to the feeding port, and the feeding plate is located in the accommodating cavity and passes through the common base;

[0012] Furthermore, the two low-frequency dipoles that are not adjacent to each other are symmetrically arranged;

[0013] Furthermore, the low-frequency radiation unit, the high-frequency radiation unit and the common base are integrally die-cast.

[0014] In a second aspect, the present invention further provides an antenna comprising an integrated common-aperture radiation unit as described above.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model provides an integrated common-aperture radiation unit and antenna. The common-aperture high- and low-frequency radiation units are connected as a whole through the bottom of the high-frequency and low-frequency feed baluns to form a common base. The common base is integrated by die-casting, which reduces the parts composition of the common-aperture high- and low-frequency radiation units, eliminates the assembly process of embedding the high-frequency radiation unit into the aperture of the low-frequency radiation unit, and eliminates the positioning components. The antenna assembly is simpler, the radiation unit is lighter, and there are fewer intermodulation risk points, making the indicators easier to control.

[0017] 2. The integrated common-aperture radiation unit and antenna provided by the present invention, the high-frequency dipole high-frequency radiation arm of the common aperture is cleverly offset from the low-frequency feed balun, and the orthographic projection surface does not interfere, so the die-casting mold is simple and it is easy to realize the integrated die-casting of high and low frequency common aperture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention from a first viewing angle;

[0019] Figure 2 This is a top view of the first embodiment of the present utility model;

[0020] Figure 3This is a schematic diagram of the overall structure of the second viewing angle of the first embodiment of the present invention;

[0021] Figure 4 This is a bottom view of the first embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the first perspective of the second embodiment of the present invention.

[0023] Figure 6 This is a top view of the second embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the overall structure of the second embodiment of the present utility model from a second viewing angle;

[0025] Figure 8 This is a bottom view of the second embodiment of the present utility model; DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1:

[0028] Reference Figures 1 to 4 , an embodiment provided by the present utility model: an integrated common-aperture radiation unit, comprising a low-frequency radiation unit 1 and a high-frequency radiation unit 2;

[0029] The low-frequency radiation unit 1 includes two pairs of four orthogonally polarized low-frequency dipoles 11, 12, 13, and 14, each of which is connected to a low-frequency feed balun, and each of which includes a pair of low-frequency radiation arms; taking the low-frequency dipole 11 as an example, the low-frequency dipole 11 is connected to a low-frequency feed balun 110, and the low-frequency dipole 11 includes low-frequency radiation arms 111 and 112, and one end of the low-frequency radiation arms 111 and 112 is connected to the two ends of the top of the low-frequency feed balun 110, and the other ends of the low-frequency radiation arms 111 and 112 extend outward.

[0030] The low-frequency dipoles 11, 12, 13, and 14 described in this embodiment have the same structure. The low-frequency dipole 12 is correspondingly connected to a low-frequency feeding balun 120. The low-frequency dipole 12 includes low-frequency radiation arms 121 and 122. One end of the low-frequency radiation arms 121 and 122 is connected to the two ends of the top of the low-frequency feeding balun 120, and the other ends of the low-frequency radiation arms 121 and 122 extend outward.

[0031] The low-frequency dipole 13 is connected to a low-frequency feeding balun 130 . The low-frequency dipole 13 includes low-frequency radiation arms 131 and 132 . One end of each of the low-frequency radiation arms 131 and 132 is connected to the top ends of the low-frequency feeding balun 130 , and the other ends of the low-frequency radiation arms 131 and 132 extend outward.

[0032] The low-frequency dipole 14 is connected to a low-frequency feeding balun 140 . The low-frequency dipole 14 includes low-frequency radiating arms 141 and 142 . One end of each of the low-frequency radiating arms 141 and 142 is connected to the top ends of the low-frequency feeding balun 140 , and the other ends of the low-frequency radiating arms 141 and 142 extend outward.

[0033] The high-frequency radiation unit 2 includes two orthogonally polarized high-frequency dipoles 21, 22 and a feeding port 23. Each of the high-frequency dipoles is connected to a high-frequency feeding balun, and each of the high-frequency dipoles includes a pair of high-frequency radiation arms. The high-frequency radiation unit 2 is located within the physical aperture enclosed by the four low-frequency dipoles 11, 12, 13, and 14 of the low-frequency radiation unit 1. In this embodiment, the high-frequency dipoles 21 and 22 have the same structure. Taking the high-frequency dipole 21 as an example, the high-frequency dipole 21 is connected to a high-frequency feeding balun 210. The high-frequency dipole 21 includes high-frequency radiation arms 211 and 212. The high-frequency radiation arms 211 and 212 are both connected to the top ends of the high-frequency feeding balun 210.

[0034] The high frequency dipole 22 is correspondingly connected to a high frequency feeding balun 220 . The high frequency dipole 22 includes high frequency radiation arms 221 and 222 . Both the high frequency radiation arms 221 and 222 are connected to the top ends of the high frequency feeding balun 220 .

[0035] One end of the low-frequency feeding balun 110, 120, 130, 140 and the high-frequency feeding balun 210, 220 are electrically connected to the dipoles of the corresponding frequency bands, and the other ends are connected to each other to form a common base 3. The back of the common base 3 is integrated with the feeding port 23 of the high-frequency radiating unit 2;

[0036] The high-frequency radiating arms of the high-frequency radiating unit 2 are staggered with the low-frequency feed balun structure of the low-frequency radiating unit 1, and do not interfere with each other in the orthographic projection direction. Specifically, the projection planes of the high-frequency radiating arms 211 and 212, 221 and 222 are located between two adjacent low-frequency feed baluns, and the high-frequency radiating arms 211 and 212, 221 and 222 do not interfere with the orthographic projection directions of the low-frequency feed baluns 110, 120, 130, and 140.

[0037] The high-frequency radiation unit 2 also includes two feeding plates 24. Each high-frequency feeding balun 210 and 220 of the high-frequency radiation unit 2 is designed as two symmetrical semi-cylinders. The two high-frequency feeding baluns 210 and 220 form a hollow accommodating cavity 25. The accommodating cavity 25 passes through the common base 3 and is connected to the feeding port 23. The two feeding plates 24 are located in the accommodating cavity 25 and pass through the common base 3. When in use, the outer conductor of the coaxial cable is welded to the cavity wall of the accommodating cavity 25 on the back of the common base 3, and the core wire of the coaxial cable is welded to the feeding plate 24 in the accommodating cavity 25.

[0038] The two non-adjacent low-frequency dipoles are symmetrically arranged, low-frequency dipoles 11 and 13 are parallel to each other, low-frequency dipoles 12 and 14 are parallel to each other, and low-frequency dipoles 11 and 13 are orthogonal to low-frequency dipoles 12 and 14, forming two orthogonal polarizations.

[0039] The low-frequency radiation unit 1 , the high-frequency radiation unit 2 and the common base 3 are integrally formed by die-casting.

[0040] Example 2:

[0041] like Figures 4 to 8 As shown, the difference between Example 2 and Example 1 is that the shape and position of the high-frequency radiation arm are different. The projection surfaces of the high-frequency radiation arms 211 and 212, 221 and 222 are set in the gaps of the low-frequency feed baluns 110, 120, 130, and 140, and the positive projection directions do not interfere with each other, realizing integrated die-casting molding.

[0042] Working principle: During use, the integrated common-aperture radiation unit is fastened to the reflector with a screw, and the power splitter terminal and transmission line are assembled. The low-frequency radiation unit 1 feeds the half-wave oscillator constituting the low-frequency radiation unit through the power splitter terminal arranged on the back of the common base 3 and the transmission line arranged on the low-frequency feeding balun. The transmission line is respectively connected to the low-frequency dipole and the power splitter terminal of the low-frequency feeding unit 1, and the other end of the power splitter terminal is connected to the feeding network on the back of the reflector to realize signal transmission; the high-frequency radiation unit 2 is fed through the feeding port 23 integrated in the integrated common-aperture radiation unit, and the feeding port 23 is arranged on the back of the reflector to connect the high-frequency feeding network on the back of the reflector to realize signal transmission.

[0043] The utility model provides an integrated common-aperture radiation unit, in which the high- and low-frequency radiation units of the common aperture are connected as a whole through the bottom of the high-frequency and low-frequency feeding baluns to form a common base 3. The common base 3 is die-cast in an integrated manner, which reduces the parts composition of the high- and low-frequency radiation units of the common aperture, eliminates the assembly process of embedding the high-frequency radiation unit into the aperture of the low-frequency radiation unit, and eliminates the positioning components. This makes the antenna assembly simpler, the radiation unit lighter, and has fewer intermodulation risk points, making the indicators easier to control.

[0044] Moreover, the integrated common-aperture radiation unit and antenna provided by the present invention, the high-frequency dipole high-frequency radiation arm of the common aperture is cleverly offset from the low-frequency feed balun, and the orthographic projection surface does not interfere, so the die-casting mold is simple and the integrated die-casting molding of high and low frequency common aperture is easy to achieve.

[0045] On the other hand, the present invention also provides an antenna, comprising the integrated common-aperture radiation unit provided by any of the above embodiments.

[0046] The antenna provided by the utility model is simpler to assemble, and the radiation unit is lighter in weight, while there are fewer potential intermodulation risks, and the indicators are easier to control.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated common aperture radiation unit, characterized by: Including low-frequency radiation unit and high-frequency radiation unit; The low-frequency radiation unit includes two pairs of four orthogonally polarized low-frequency dipoles, each of the low-frequency dipoles is correspondingly connected to a low-frequency feeding balun, and each of the low-frequency dipoles includes a pair of low-frequency radiation arms; The high-frequency radiation unit includes two orthogonally polarized high-frequency dipoles and a feeding port, each of the high-frequency dipoles is respectively connected to a high-frequency feeding balun, each of the high-frequency dipoles includes a pair of high-frequency radiation arms, and the high-frequency radiation unit is located within the physical aperture enclosed by the four low-frequency dipoles of the low-frequency radiation unit; One end of each of the low-frequency feeding balun and the high-frequency feeding balun is electrically connected to the dipole of the corresponding frequency band, and the other ends are connected to each other to form a common base, and the back of the common base is integrated with the feeding port of the high-frequency radiating unit; The high-frequency radiation arm of the high-frequency radiation unit and the low-frequency feeding balun structure of the low-frequency radiation unit are staggered, and do not interfere with each other in the orthographic projection direction.

2. The integrated common-aperture radiation unit according to claim 1, characterized in that: The high-frequency radiation unit also includes two feeding plates. Each high-frequency feeding balun of the high-frequency radiation unit is designed as two symmetrical semi-cylinders. The two high-frequency feeding baluns form a hollow accommodating cavity, which passes through the common base and is connected to the feeding port. The feeding plate is located in the accommodating cavity and passes through the common base.

3. The integrated common-aperture radiation unit according to claim 2, characterized in that: The two low-frequency dipoles that are not adjacent to each other are symmetrically arranged.

4. The integrated common-aperture radiation unit according to claim 3, characterized in that: The low-frequency radiation unit, the high-frequency radiation unit and the common base are integrally die-cast.

5. An antenna, characterized in that: It comprises the integrated common-aperture radiation unit as described in any one of claims 1 to 4.

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