Low-frequency radiation unit

Abstract

The utility model relates to the technical field of communication, in particular to a low-frequency radiation unit, which comprises a balun seat and a plurality of radiating fins, and is characterized in that the balun seat comprises an annular base and four balun arms, the four balun arms are respectively of an arc-shaped structure, and the four balun arms are respectively arranged on the outer side of the top of the annular base in a surrounding manner; the number of the oscillator arms is four, and the four oscillator arms are connected to the sides, away from the annular base, of the four balun arms in a one-to-one correspondence mode; and a feed assembly, wherein the feed assembly comprises two feed ends and four matching cables. According to the low-frequency radiation unit disclosed by the invention, the use of matching cables is reduced, and the use of power dividers or feed slots is canceled, so that the assembly welding can be reduced, and the consistency of radiation unit products and the stability of passive intermodulation (PIM) performance are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field especially a low frequency radiation unit. BACKGROUND

[0002] Radiation unit is commonly known as dipole, which includes various different forms. At present, the most used radiation unit structure in base station antenna industry includes: bowl-shaped radiation unit, half-wave dipole radiation unit and folding radiation unit, etc. The performance of radiation unit directly determines the important indicators of antenna, such as gain, half-power beam width, front-to-back ratio, cross-polarization ratio, etc. Among them, the bowl-shaped radiation unit adopts the mode of dipole opposition. By setting a pair of dipoles in one polarization direction and another pair of dipoles in the direction orthogonal to it, a dual-polarized radiation unit is formed. Since a pair of dipoles forms a small two-element array, the bowl-shaped radiation unit has the advantages of high gain and narrow beam. Since such radiation unit needs to lead out four matching cables, and additionally needs to be connected with power divider or feed slot, if these parts are not fixed stably, it will cause the passive intermodulation PIM electrical performance of the overall antenna to deteriorate, and the increase of the number of welding points will also make the production welding personnel difficult to operate in the welding process, bringing the disadvantages of complex operation, etc.

[0003] It can be seen that the prior art still needs to be improved and improved. CONTENT OF THE UTILITY MODEL

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a low frequency radiation unit to solve the problem of unstable passive intermodulation PIM performance caused by the use of too many matching cables in the existing radiation unit, and too many welding points.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A low frequency radiation unit, comprising:

[0007] Baron seat, the baron seat includes annular base and four baron arms, the shape of four baron arms is arc structure respectively, four baron arms are annularly arranged on the outside of the top of annular base respectively;

[0008] Dipole arm, the dipole arm includes four, four dipole arms are respectively connected on the side far away from the annular base of four baron arms one by one;

[0009] The feeding assembly comprises two feeding ends and four matching cables, the four matching cables are respectively and correspondingly clamped on the four balun arms, one end of the four matching cables is respectively and correspondingly electrically connected with the four vibrator arms, the two feeding ends are respectively and correspondingly arranged on the annular base, the other end of any two matching cables arranged at intervals is respectively and correspondingly electrically connected with any feeding end, and the other end of the other two matching cables is respectively and correspondingly electrically connected with the other feeding end.

[0010] The low-frequency radiation unit comprises the first radiation arm and the second radiation arm, and the first radiation arm and the second radiation arm are respectively and symmetrically arranged on the two sides of any balun arm.

[0011] The low-frequency radiation unit further comprises four vibrator buckles, and the two ends of each vibrator buckle are respectively clamped with the first radiation arm and the second radiation arm on the adjacent two vibrator arms.

[0012] The low-frequency radiation unit further comprises four vibrator buckles, and the two ends of each vibrator buckle are respectively clamped with the first radiation arm and the second radiation arm on the adjacent two vibrator arms.

[0013] The low-frequency radiation unit further comprises four vibrator buckles, and the two ends of each vibrator buckle are respectively clamped with the first radiation arm and the second radiation arm on the adjacent two vibrator arms.

[0014] The low-frequency radiation unit further comprises four vibrator buckles, and the two ends of each vibrator buckle are respectively clamped with the first radiation arm and the second radiation arm on the adjacent two vibrator arms.

[0015] The low-frequency radiation unit as claimed in any one of the above, each of the reinforcing sleeves comprises a sleeve piece, a blocking block, two second buckles and two third buckles, the sleeve piece is clamped on the balun arm, the blocking block is arranged on the middle part of the inner side of the sleeve piece, the two sides of the blocking block are respectively in abutment with the first balun arm and the second balun arm, two second buckles are respectively arranged on the two sides of one end of the sleeve piece, two second buckles are respectively clamped on the two sides of the first radiation arm, two third buckles are respectively arranged on the two sides of the other end of the sleeve piece, and two third buckles are respectively clamped on the two sides of the second radiation arm.

[0016] The low-frequency radiation unit as claimed in any one of the above, the two first balun arms on the left side of the annular base are respectively provided with first grooves, the two matching cables on the left side of the annular base are respectively and correspondingly clamped on the two first grooves, one end of the two matching cables on the left side of the annular base is respectively and correspondingly electrically connected with the two second balun arms on the left side of the annular base, the two second balun arms on the right side of the annular base are respectively provided with second grooves, the two matching cables on the right side of the annular base are respectively and correspondingly clamped on the two second grooves, and one end of the two matching cables on the right side of the annular base is respectively and correspondingly electrically connected with the two first balun arms on the right side of the annular base.

[0017] The low-frequency radiation unit as claimed in any one of the above, further comprising a connecting base, the connecting base comprises a bottom plate, four limiting blocks, four fourth buckles and at least two plug buckles, the bottom plate is in abutment with the bottom of the annular base, four limiting blocks are respectively and circularly arranged on the outer side of the bottom plate, four limiting blocks are respectively arranged on the side of the bottom plate facing the annular base, four fourth buckles are respectively and correspondingly arranged on the side of the four limiting blocks facing the annular base, four fourth buckles are respectively clamped on the annular base, and at least two plug buckles are respectively arranged on the side of the bottom plate away from the annular base.

[0018] Beneficial effects:

[0019] The utility model discloses a low frequency radiation unit, including barron seat, oscillator arm and feed component, the barron seat is by annular base and four barron arms, wherein four barron arms's shape is arc and is annular on the outside of annular base, forms the bowl oscillator, oscillator arm includes four, four oscillator arms are connected on four barron arms's one side away from annular base respectively one -to -one, feed component includes two feed ends and four match cables, four match cables are respectively one -to -one and are connected with four oscillator arms on four barron arms and are electrically connected, and the other end of interval arrangement's any two match cables is electrically connected with any feed end respectively, and the other end of another two match cables is electrically connected with another feed end respectively, that is, forms cross dual -polarization, and is connected with external cable through two feed ends, the low frequency radiation unit disclosed in the application reduces the use of match cable, cancels the use of power divider or feed groove, thereby can reduce assembly welding, improves the stability of the consistency and passive intermodulation PIM performance of radiation unit product. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model provides a low frequency radiation unit's structural schematic diagram;

[0021] Figure 2 The utility model provides a low frequency radiation unit's plan view;

[0022] Figure 3 The utility model provides a low frequency radiation unit's explosion map;

[0023] Figure 4 The utility model provides a low frequency radiation unit's another angle's explosion map;

[0024] Figure 1 barron seat;11, annular base;12, barron arm;13, first barron arm;14, second barron arm;15, first recess;16, second recess;2, oscillator arm;21, first radiation arm;22, second radiation arm;23, main radiation arm;24, vice radiation arm;3, feed component;31, feed end;32, match cable;4, oscillator buckle;41, concave set;42, stop block;43, first buckle;44, avoiding hole;5, reinforcing sleeve;51, sleeve set;52, stop block;53, second buckle;54, third buckle;6, connecting base;61, bottom plate;62, limit block;63, fourth buckle;64, plug buckle. DETAILED DESCRIPTION

[0025] The utility model provides a low frequency radiation unit, for the purpose, technical scheme and effect of the utility model are clearer, more definite, the following refers to the drawing and raises example to this utility model and makes further detailed description.

[0026] In the description of the utility model, need understanding is, the orientation or position relation indicated by the term "top" etc. is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, can not be understood as the limitation of the utility model, in addition, the terms "mounting", "connecting" and the like should be broadly understood, for ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0027] As Figures 1-4 Indicated, the embodiment of the application proposes a kind of low-frequency radiating unit, comprising:

[0028] Barren seat 1, the barren seat 1 includes annular base 11 and four barren arms 12, four the shape of the barren arm 12 is arc structure respectively, four the barren arm 12 is respectively annular on the outside of the top of the annular base 11;

[0029] Vibrator arm 2, the vibrator arm 2 includes four, four the vibrator arm 2 is respectively one-to-one corresponding connection on four the barren arm 12 side away from the annular base 11;

[0030] Feeding assembly 3, the feeding assembly 3 includes two feeding ends 31 and four matching cables 32, four the matching cable 32 is respectively one-to-one card set on four the barren arm 12, one end of four the matching cable 32 is respectively with four the vibrator arm 2 one-to-one electric connection, two the feeding end 31 is respectively worn on the annular base 11, the other end of any two the matching cable 32 of interval arrangement is respectively with any the feeding end 31 electric connection, and the other end of other two the matching cable 32 is respectively with other the feeding end 31 electric connection.

[0031] The utility model discloses a low frequency radiation unit, including baron seat 1, oscillator arm 2 and feed component 3, the baron seat 1 is formed by annular base 11 and four baron arms 12, wherein four the shape of baron arm 12 is arc and is annular on the outside of annular base 11, forms the bowl oscillator, oscillator arm 2 includes four, four oscillator arm 2 respectively one one correspondence is connected on the one side of four baron arms 12 away from annular base 11, feed component 3 includes two feed ends 31 and four matching cables 32, four matching cables 32 respectively one one correspondence card sets on four baron arms 12 and is connected with four oscillator arms 2 electricity, and the other end of interval arrangement's any two matching cables 32 is connected with any feed end 31 electricity respectively, and the other end of two matching cables 32 is connected with another feed end 31 electricity respectively, that is, forms cross dual -polarization, and is connected with external cable through two feed ends, the low frequency radiation unit disclosed in the application reduces the use of matching cable, cancels the use of power divider or feed slot, thereby can reduce assembly welding, improves the stability of the consistency and passive intermodulation PIM performance of radiation unit product.

[0032] Every oscillator arm 2 includes first radiation arm 21 and second radiation arm 22 respectively, first radiation arm 21 and second radiation arm 22 are respectively symmetrically arranged on the two sides of any baron arm 12, that is, the first radiation arm 21 and the second radiation arm 22 of adjacent two oscillator arms 2 are arranged adjacent along the direction of the straight line where the two oscillator arms 2 are located, which can improve the front-to-back ratio of the antenna, cross polarization and other performances, while reducing the size of the radiation unit and achieving miniaturization.

[0033] The low-frequency radiation unit further comprises four vibrator buckles 4, two ends of each of the vibrator buckles 4 are respectively buckled with the first radiation arm 21 and the second radiation arm 22 on the adjacent two vibrator arms 2, wherein each of the vibrator buckles 4 respectively comprises a concave sleeve 41, a stopper 42 and two first buckles 43, two ends of the concave sleeve 41 are respectively buckled on the first radiation arm 21 and the second radiation arm 22, the stopper 42 is arranged on the middle part of the inner side of the concave sleeve 41, one side of the first radiation arm 21 and the second radiation arm 22 is respectively abutted with two sides of the stopper 42, two first buckles 43 are respectively arranged on two sides of the concave sleeve 41, and the two first buckles 43 are respectively buckled with the first radiation arm 21 and the second radiation arm 22, the concave sleeve 41 limits the swing of the first radiation arm 21 and the second radiation arm 22, the first radiation arm 21 and the second radiation arm 22 are isolated by the stopper 42, the vibrator buckles 4 are respectively buckled and fixed with the first radiation arm 21 and the second radiation arm 22 through the two first buckles 43, so as to improve the stability of the radiation unit and avoid the breakage of the first radiation arm 21 and the second radiation arm 22.

[0034] The first radiation arm 21 and the second radiation arm 22 are consistent in structure, the first radiation arm 21 comprises a main radiation arm 23 and a secondary radiation arm 24, one end of the main radiation arm 23 is connected with any one of the balun arms 12, the secondary radiation arm 24 is vertically arranged on the other end of the main radiation arm 23, the concave sleeve 41 is provided with an avoiding hole 44 corresponding to the secondary radiation arm 24, the main radiation arm 23 and the secondary radiation arm 24 form a bending structure, the effective length and the current of the vibrator arm 2 are changed through the bending design, so as to affect the resonant frequency and the radiation characteristics, and the rigidity and stability of the vibrator arm 2 and the stability of the connection between the vibrator arm 2 and the vibrator buckle 4 are enhanced, and the influence of mechanical vibration on the performance is reduced.

[0035] Each of the balun arms 12 comprises a first balun arm 13 and a second balun arm 14, one end of the first balun arm 13 and the second balun arm 14 is connected with the annular base 11 respectively, the other end of the first balun arm 13 is connected with the first radiating arm 21, and the other end of the second balun arm 14 is connected with the second radiating arm 22, the low-frequency radiating unit further comprises four reinforcing sleeves 5, four reinforcing sleeves 5 are arranged one-to-one with four balun arms 12 respectively, two ends of each reinforcing sleeve 5 are connected with the first balun arm 13 and the second balun arm 14 of the same balun arm 12 respectively, which effectively improves the oscillation effect of the vibrator arm 2, and makes the low-frequency radiating unit achieve the requirement of light weight through this arrangement; wherein each reinforcing sleeve 5 comprises a sleeve piece 51, a blocking block 52, two second buckles 53 and two third buckles 54, the sleeve piece 51 is clamped on the balun arm 12, the blocking block 52 is arranged on the middle part of the inner side of the sleeve piece 51, the two sides of the blocking block 52 are respectively abutted with the first balun arm 13 and the second balun arm 14, two second buckles 53 are arranged on the two sides of one end of the sleeve piece 51 respectively, two second buckles 53 are clamped on the two sides of the first radiating arm 21 respectively, two third buckles 54 are arranged on the two sides of the other end of the sleeve piece 51 respectively, and two third buckles 54 are clamped on the two sides of the second radiating arm 22 respectively, which reinforces the stability of the structure of the low-frequency radiating unit.

[0036] The first groove 15 is arranged on the left side of the annular base 11, the matching cable 32 is clamped on the first groove 15 one-to-one, one end of the matching cable 32 is electrically connected with the second balun arm 14 on the left side of the annular base 11 one-to-one, the second groove 16 is arranged on the right side of the annular base 11, the matching cable 32 is clamped on the second groove 16 one-to-one, one end of the matching cable 32 is electrically connected with the first balun arm 13 on the right side of the annular base 11 one-to-one, that is, any two matching cables 32 arranged at intervals are electrically connected with the first radiating arm 21 and the second radiating arm 22 on the two vibrator arms arranged at intervals, which further optimizes the cross polarization.

[0037] The low-frequency radiation unit further comprises a connecting base 6, the connecting base 6 comprises a bottom plate 61, four limiting blocks 62, four fourth buckles 63 and at least two plug buckles 64, the bottom plate 61 is abutted on the bottom of the annular base 11, four limiting blocks 62 are respectively annularly arranged on the outer side of the bottom plate 61, four limiting blocks 62 are respectively arranged on the side of the bottom plate 61 towards the annular base 11, four fourth buckles 63 are respectively arranged on the side of four limiting blocks 62 towards the annular base 11, four fourth buckles 63 are respectively clamped on the annular base 11, at least two plug buckles 64 are respectively arranged on the side of the bottom plate 61 away from the annular base 11, four limiting blocks 62 are clamped on the circumferential side of the annular base 11, four fourth buckles 63 are buckled on the annular base 11 to clamp and fix the connecting base 6 and the radiation unit, and are connected with the external reflecting plate or shell through at least two plug buckles 64, so as to fix the low-frequency radiation unit.

[0038] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. A low frequency radiating element, characterized by, It includes: Barren seat (1), the barren seat (1) includes annular base (11) and four barren arms (12), four the shape of the barren arms (12) is arc structure respectively, four the barren arms (12) are respectively annular on the outside of the top of the annular base (11); Vibrator arm (2), the vibrator arm (2) includes four, four the vibrator arm (2) is respectively one-to-one corresponding connection on four the barren arm (12) side away from the annular base (11); Feeding assembly (3), the feeding assembly (3) includes two feeding ends (31) and four matching cables (32), four the matching cable (32) is respectively one-to-one corresponding card on four the barren arm (12), four the matching cable (32) one end is respectively with four the vibrator arm (2) one-to-one corresponding electric connection, two the feeding end (31) is respectively worn on the annular base (11), the other end of the matching cable (32) of the interval arrangement is respectively with any the feeding end (31) electric connection, the other end of the other two matching cables (32) is respectively with the other feeding end (31) electric connection.

2. A low frequency radiating element according to claim 1, characterised in that, Each the vibrator arm (2) respectively includes first radiation arm (21) and second radiation arm (22), the first radiation arm (21) and the second radiation arm (22) are respectively symmetrically arranged on the two sides of any the barren arm (12).

3. A low frequency radiating element according to claim 2, characterised in that, The low-frequency radiation unit further includes four vibrator buckles (4), and the two ends of each the vibrator buckle (4) are respectively clamped with the first radiation arm (21) and the second radiation arm (22) on the adjacent two vibrator arms (2).

4. A low frequency radiating element according to claim 3, characterised in that, Each the vibrator buckle (4) respectively includes a concave sleeve (41), a stopper (42) and two first buckles (43), the two ends of the concave sleeve (41) are respectively clamped on the first radiation arm (21) and the second radiation arm (22), the stopper (42) is arranged on the middle part of the inner side of the concave sleeve (41), one side of the first radiation arm (21) and the second radiation arm (22) is respectively abutted with the two sides of the stopper (42), and two first buckles (43) are respectively arranged on the two sides of the concave sleeve (41), and the first buckles (43) are respectively clamped with the first radiation arm (21) and the second radiation arm (22).

5. A low frequency radiating element according to claim 4, characterised in that, The first radiation arm (21) and the second radiation arm (22) are consistent in structure, the first radiation arm (21) includes a main radiation arm (23) and a secondary radiation arm (24), one end of the main radiation arm (23) is connected with any the barren arm (12), the secondary radiation arm (24) is arranged on the other end of the main radiation arm (23) perpendicularly, and the concave sleeve (41) is provided with a avoiding hole (44) corresponding to the secondary radiation arm (24).

6. A low frequency radiating element according to claim 2, characterised in that, Each of the balun arms (12) comprises a first balun arm (13) and a second balun arm (14), one end of the first balun arm (13) and the second balun arm (14) is connected with the annular base (11) respectively, the other end of the first radiating arm (21) is connected with the first balun arm (13), the other end of the second radiating arm (22) is connected with the second balun arm (14), the low-frequency radiating unit further comprises four reinforcing sleeves (5), four reinforcing sleeves (5) are arranged one by one corresponding to four balun arms (12) respectively, two ends of each reinforcing sleeve (5) are connected with the first balun arm (13) and the second balun arm (14) of the same balun arm (12) respectively.

7. A low frequency radiating element according to claim 6, characterised in that, Each of the reinforcing sleeves (5) comprises a sleeve piece (51), a blocking block (52), two second buckles (53) and two third buckles (54), the sleeve piece (51) is clamped on the balun arm (12), the blocking block (52) is arranged on the middle part of the inner side of the sleeve piece (51), the two sides of the blocking block (52) are respectively abutted with the first balun arm (13) and the second balun arm (14), two second buckles (53) are arranged on the two sides of one end of the sleeve piece (51) respectively, two second buckles (53) are clamped on the two sides of the first radiating arm (21) respectively, two third buckles (54) are arranged on the two sides of the other end of the sleeve piece (51) respectively, and two third buckles (54) are clamped on the two sides of the second radiating arm (22) respectively.

8. A low frequency radiating element according to claim 6, characterised in that, Two first grooves (15) are arranged on the two first balun arms (13) on the left side of the annular base (11) respectively, two matching cables (32) on the left side of the annular base (11) are clamped on the two first grooves (15) one by one respectively, one end of the two matching cables (32) on the left side of the annular base (11) is electrically connected with the two second balun arms (14) on the left side of the annular base (11) one by one respectively, two second grooves (16) are arranged on the two second balun arms (14) on the right side of the annular base (11) respectively, two matching cables (32) on the right side of the annular base (11) are clamped on the two second grooves (16) one by one respectively, one end of the two matching cables (32) on the right side of the annular base (11) is electrically connected with the two first balun arms (13) on the right side of the annular base (11) one by one respectively.

9. A low frequency radiating element according to claim 1, characterised in that, The low-frequency radiation unit further comprises a connecting base (6), the connecting base (6) comprises a bottom plate (61), four limiting blocks (62), four fourth buckles (63) and at least two plug buckles (64), the bottom plate (61) is abutted on the bottom of the annular base (11), four limiting blocks (62) are respectively annularly arranged on the outer side of the bottom plate (61), four limiting blocks (62) are respectively arranged on the side of the bottom plate (61) facing the annular base (11), four fourth buckles (63) are respectively and correspondingly arranged on the side of four limiting blocks (62) facing the annular base (11), four fourth buckles (63) are respectively clamped on the annular base (11), and at least two plug buckles (64) are respectively arranged on the side of the bottom plate (61) away from the annular base (11).

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