Antenna assembly and test system

Abstract

Provided in the present application are an antenna assembly and a test system. The antenna assembly comprises a first element and a second element; the plane where the first element is located is perpendicular to the plane where the second element is located, and a vertical line is formed at the intersection. The first element comprises a first radiator and a second radiator; the first radiator comprises a first radiation portion and a second radiation portion; the second radiator has the same structure as the first radiator, and the second radiator and the first radiator are arranged symmetrically with respect to the vertical line. The second element comprises a third radiator and a fourth radiator; the third radiator comprises a third radiation portion and a fourth radiation portion; the fourth radiator has the same structure as the third radiator, and the fourth radiator and the third radiator are arranged symmetrically with respect to the vertical line.

Description

Antenna assembly and test system TECHNICAL FIELD

[0001] The present application relates to the field of mobile communication, and in particular to an antenna assembly and a test system. BACKGROUND

[0002] Key technical indicators of cross-polarization leakage cable include cross-polarization ratio. Currently, two separate antennas are usually used to test the cross-polarization ratio of the leakage cable. However, this cannot exclude the interference between the two antennas, resulting in inaccurate test results. SUMMARY

[0003] To solve the problems in the prior art, the present application provides an antenna assembly and a test system, which realize lightweight of the antenna assembly while increasing the bandwidth.

[0004] The present application provides an antenna assembly, which comprises a first dipole and a second dipole. The plane where the first dipole is located is perpendicular to the plane where the second dipole is located, and a vertical line is formed at the overlapping position.

[0005] The first dipole comprises a first radiator and a second radiator. The first radiator and the second radiator are arranged at intervals. The first radiator comprises a first radiation part and a second radiation part. One end of the first radiation part is bent away from the vertical line to form the second radiation part. The second radiator has the same structure as the first radiator and is symmetrically arranged with the first radiator with the vertical line as the axis.

[0006] The second dipole comprises a third radiator and a fourth radiator. The third radiator and the fourth radiator are arranged at intervals. The third radiator comprises a third radiation part and a fourth radiation part. One end of the third radiation part is bent away from the vertical line to form the fourth radiation part. The fourth radiator has the same structure as the third radiator and is symmetrically arranged with the third radiator with the vertical line as the axis.

[0007] In an embodiment, one end of the second radiation part away from the first radiation part is provided with a fifth radiation part cross-connected therewith, and one end of the fourth radiation part away from the third radiation part is provided with a sixth radiation part cross-connected therewith.

[0008] In an embodiment, the first radiation part and the second radiation part are arranged at an angle of 90°, and the second radiation part and the fifth radiation part are arranged at an angle of 90°. The third radiator has the same structure as the first radiator.

[0009] In an embodiment, the first radiation part and the second radiation part are integrally formed or detachably arranged.

[0010] In an embodiment, the first radiation part and the second radiation part are detachably arranged, and a first connecting piece is arranged between the first radiation part and the second radiation part.

[0011] In an embodiment, the first radiation part, the second radiation part and the fifth radiation part are integrally formed or detachably arranged.

[0012] In an embodiment, the first radiation part, the second radiation part and the fifth radiation part are detachably arranged, and a first connecting piece is arranged between the first radiation part and the second radiation part, and / or a second connecting piece is arranged between the second radiation part and the fifth radiation part.

[0013] In an embodiment, the antenna assembly further comprises a base, and the first dipole and the second dipole are fixed on the base.

[0014] A first feeding part is arranged on a portion of the first dipole close to the base, and a second feeding part is arranged on a portion of the second dipole close to the base.

[0015] A connecting hole is arranged on the base, and the connecting hole is arranged corresponding to positions of the first feeding part and the second feeding part.

[0016] In an embodiment, projections of the first dipole and the second dipole on the base are first projections, and the connecting hole is arranged offset from a center of the first projections.

[0017] In an embodiment, the antenna assembly further comprises a first balun and a second balun.

[0018] A first end of the first balun is electrically connected with the first feeding part, and second ends of the first balun are respectively electrically connected with the first radiation body and the second radiation body.

[0019] A first end of the second balun is electrically connected with the second feeding part, and second ends of the second balun are respectively electrically connected with the third radiation body and the fourth radiation body.

[0020] In an embodiment, the antenna assembly further comprises a cross limiting piece.

[0021] The cross limiting piece is arranged on upper end portions of the first dipole and the second dipole, and the cross limiting piece is used for clamping the first dipole and the second dipole.

[0022] The application further provides a test system comprising the above antenna assembly.

[0023] The application forms a dual-polarized dipole antenna structure through a first oscillator and a second oscillator, realizes cross polarization ratio of an antenna assembly test leakage cable. The first radiator, the second radiator, the third radiator and the fourth radiator are arranged as a bending structure, the antenna gain is adjusted to a suitable test range, and the size of the antenna is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structure diagram of an antenna assembly according to an embodiment of the application.

[0025] Fig. 2 is a structure diagram of a first oscillator according to an embodiment of the application.

[0026] Fig. 3 is a structure diagram of a second oscillator according to an embodiment of the application.

[0027] Fig. 4 is a structure diagram of a first oscillator according to another embodiment of the application.

[0028] Fig. 5 is a structure diagram of a base according to an embodiment of the application.

[0029] Fig. 6 is a structure diagram of an antenna assembly according to another embodiment of the application.

[0030] Antenna assembly 100 First radiator 110 Second radiator 120 Base 130 First radiating element 111 Second radiating element 112 Third radiating element 121 Fourth radiating element 122 First radiating portion 111a Second radiating portion 111b Third radiating portion 121a Fourth radiating portion 121b Fifth radiating portion 111c Sixth radiating portion 121c First connecting element 113 Second connecting element 116 First feeding portion 114 Second feeding portion 124 First balun balancer 115 Second balun balancer 125 Housing 140 Mounting rod 150 Connecting hole 131 Mounting hole 132 Cross limiting member 160 First insulating base material 117 Second insulating base material 127 Vertical line L

[0031] The following detailed description will further describe the present application with reference to the above mentioned figures. DETAILED DESCRIPTION

[0032] The following description will reference the above mentioned figures in order to more fully describe the present application. The figures show example embodiments of the present application. However, the application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These example embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numbers refer to like elements throughout the specification.

[0033] With reference to FIG. 1, FIG. 2 and FIG. 3, the application provides an antenna assembly 100, which comprises a first dipole 110 and a second dipole 120, the plane where the first dipole 110 is located is perpendicular to the plane where the second dipole 120 is located, and forms a vertical line L at the overlapping position; that is, the first dipole 110 and the second dipole 120 are perpendicular to each other.

[0034] The first dipole 110 comprises a first radiator 111 and a second radiator 112; the first radiator 111 and the second radiator 112 are arranged at intervals. The first radiator 111 comprises a first radiation part 111a and a second radiation part 111b; one end of the first radiation part 111a is bent to form the second radiation part 111b in the direction away from the vertical line L; the structure of the second radiator 112 is the same as that of the first radiator 111, and is symmetrically arranged with the first radiator 111 with the vertical line L as the axis.

[0035] The second dipole 120 comprises a third radiator 121 and a fourth radiator 122; the third radiator 121 and the fourth radiator 122 are arranged at intervals; the third radiator 121 comprises a third radiation part 121a and a fourth radiation part 121b; one end of the third radiation part 121a is bent to form the fourth radiation part 121b in the direction away from the vertical line L; the structure of the fourth radiator 122 is the same as that of the third radiator 121, and is symmetrically arranged with the third radiator 121 with the vertical line L as the axis.

[0036] In the embodiment, by arranging the first radiator 111 and the second radiator 112 to have the same structure and symmetrically form the first dipole 110, the third radiator 121 and the fourth radiator 122 to have the same structure and symmetrically form the second dipole 120, and orthogonally perpendicularly arranging the first dipole 110 and the second dipole 120, a dual-polarized dipole antenna can be formed. In detection, the transmission power of the leaky cable is set, and the leaky cable works to send radiation signals. The dual-polarized dipole antenna formed by the orthogonally perpendicularly arranged first dipole 110 and second dipole 120 can receive the radiation signals of the leaky cable in two orthogonal polarization directions. The power received by the antenna assembly 100 along the length direction of the leaky cable is detected, and the cross-polarization ratio of the leaky cable can be calculated according to the transmission power of the leaky cable, the received power of the antenna assembly 100 and the distance between the leaky cable and the antenna.

[0037] In addition, the gain of the vertical vibrator arm is high, which is not suitable for the gain requirement of the leakage cable test. Therefore, by bending the first radiation part 111a to form a second radiation part 111b at one end, and bending the third radiation part 121a to form a fourth radiation part 121b at one end, the bending arrangement can set the radiation body to the opposite direction of the antenna radiation, so that the radiation gain in the main direction can be reduced, and the size of the antenna can also be reduced. In this way, the gain of the antenna assembly 100 can be controlled within -1-3dB. Among them, the length of the first radiation part 111a, the second radiation part 111b, the third radiation part 121a and the fourth radiation part 121b can be adjusted according to actual needs.

[0038] The present application forms a dual-polarized dipole antenna structure by the first vibrator 110 and the second vibrator 120, which realizes the cross-polarization ratio of the leakage cable test of one antenna assembly 100. By arranging the first radiation body 111, the second radiation body 112, the third radiation body 121 and the fourth radiation body 122 as a bending structure, the antenna gain is adjusted to a suitable test range, and the size of the antenna is also reduced.

[0039] In an embodiment, as shown in FIG. 1, the first vibrator 110 includes a first insulating substrate 117, and the second vibrator 120 includes a second insulating substrate 127. The first insulating substrate 117 is provided with a first slit extending along the vertical line L, and the first radiation body 111 and the second radiation body 112 are arranged on both sides of the first slit; the second insulating substrate 127 is provided with a second slit extending along the vertical line L, and the third radiation body 121 and the fourth radiation body 122 are arranged on both sides of the second slit. In the vertical line L direction, the first slit can extend from the lower part to the upper part of the first insulating substrate 117, and does not penetrate the entire first insulating substrate 117, and the second slit can extend from the upper part to the lower part of the second insulating substrate 127, and does not penetrate the entire second insulating substrate 127, and the first vibrator 110 and the second vibrator 120 form a vertical intersection by the first slit and the second slit. This design is simple and easy to produce, and can fix the first insulating substrate 117 and the second insulating substrate 127 at the vertically intersecting position.

[0040] Optionally, in the vertical line L direction, the upper end of the first vibrator 110 and the upper end of the second vibrator 120 are flush. And / or, in the vertical line L direction, the lower end of the first vibrator 110 and the lower end of the second vibrator 120 are flush. This design can facilitate the connection of the antenna assembly 100 with the coaxial cable and subsequent installation and fixation.

[0041] Further, as shown in FIG. 1, the antenna assembly 100 further comprises a cross limiting member 160. The cross limiting member 160 is arranged at the upper end of the first vibrator 110 and the second vibrator 120, and is used to be clamped with the first vibrator 110 and the second vibrator 120. At least part of the upper end of the first vibrator 110 and the second vibrator 120 can be clamped into the cross limiting member 160. This design can make the first vibrator 110 and the second vibrator 120 keep perpendicular intersection.

[0042] In an embodiment, the second radiation part 111b is provided with a fifth radiation part 111c connected therewith at one end away from the first radiation part 111a, and the fourth radiation part 121b is provided with a sixth radiation part 121c connected therewith at one end away from the third radiation part 121a.

[0043] In the embodiment, the fifth radiation part 111c is formed by bending the second radiation part 111b, and the sixth radiation part 121c is formed by bending the fourth radiation part 121b, so as to further adjust the gain and reduce the size of the antenna.

[0044] In an embodiment, the first radiation part 111a and the second radiation part 111b are arranged at a 90° angle, and the second radiation part 111b and the fifth radiation part 111c are arranged at a 90° angle; the third radiation part 121 is the same structure as the first radiation part 111.

[0045] In an embodiment, the first radiation part 111a and the second radiation part 111b are integrally formed or detachably arranged.

[0046] In the embodiment, the first radiation part 111a and the second radiation part 111b can be integrally formed by metal materials, such as steel, copper, aluminum, iron, etc. Alternatively, the first radiation part 111a and the second radiation part 111b can be arranged as independent parts to realize detachable adjustment.

[0047] Referring to FIG. 4, in an embodiment, when the first radiation part 111a and the second radiation part 111b are detachably arranged, a first connecting member 113 is arranged between the first radiation part 111a and the second radiation part 111b.

[0048] For example, the second radiating part 111b can be provided as a metal arm structure, and the second radiating part 111b and the first radiating part 111a can be connected through a metal stud and a metal nut. The metal stud and the metal nut cooperate to fix the first radiating part 111a and the second radiating part 111b. The second radiating part 111b can also be selected as a radiating element with different lengths, thereby realizing length adjustment of the second radiating part 111b. In addition, the second radiating part 111b can also be provided as a telescopic structure, and the length of the second radiating part 111b can be adjusted by adjusting the length of the telescopic second radiating part 111b. The length of the second radiating part 111b can be set to 1mm-2m according to actual application, so as to realize corresponding gain.

[0049] In an embodiment, the first radiating part 111a, the second radiating part 111b and the fifth radiating part 111c are integrally formed or detachably provided.

[0050] In this embodiment, the first radiating part 111a, the second radiating part 111b and the fifth radiating part 111c can be integrally formed by a metal material, such as steel, copper, aluminum, iron, etc. Alternatively, the first radiating part 111a, the second radiating part 111b and the fifth radiating part 111c can be provided as independent parts, so as to realize detachable adjustment.

[0051] Referring to FIG. 4, in an embodiment, when the first radiating part 111a, the second radiating part 111b and the fifth radiating part 111c are detachably provided, a first connecting piece 113 is arranged between the first radiating part 111a and the second radiating part 111b, and / or a second connecting piece 116 is arranged between the second radiating part 111b and the fifth radiating part 111c.

[0052] For example, the second radiating part 111b can be provided as a metal arm structure, and the second radiating part 111b and the first radiating part 111a can be connected by a metal stud and a metal nut. The metal stud and the metal nut cooperate to fix the first radiating part 111a and the second radiating part 111b. The second radiating part 111b can also be selected to have different lengths of radiating elements, thereby realizing length adjustment of the second radiating part 111b. Alternatively, the fifth radiating part 111c can be provided as a metal arm structure, and the fifth radiating part 111c and the second radiating part 111b can be connected by a metal stud and a metal nut. The metal stud and the metal nut cooperate to fix the second radiating part 111b and the fifth radiating part 111c. The fifth radiating part 111c can also be selected to have different lengths of radiating elements, thereby realizing length adjustment of the fifth radiating part 111c. In addition, the second radiating part 111b or the fifth radiating part 111c can also be provided as a telescopic structure, and the length of the second radiating part 111b or the fifth radiating part 111c can be adjusted by adjusting the length of the telescopic extension of the second radiating part 111b or the fifth radiating part 111c.

[0053] Similarly, the third radiating part 121a, the fourth radiating part 121b, and the sixth radiating part 121c can also be provided as an integral molding or a detachable structure, and details are not repeated here.

[0054] Referring to FIG. 5, in an embodiment, the antenna assembly 100 further includes a base 130, and the first vibrator 110 and the second vibrator 120 are fixed on the base 130.

[0055] In this embodiment, the first vibrator 110 and the second vibrator 120 can be welded and fixed on the base 130. The base 130 can be provided with a plurality of mounting holes 132, and the first insulating substrate 117 and the second insulating substrate 127 can be clamped and fixed by providing protrusions.

[0056] In an embodiment, as shown in FIGS. 2, 3 and 4, the part of the first vibrator 110 close to the base 130 is provided with a first feeding part 114, and the part of the second vibrator 120 close to the base 130 is provided with a second feeding part 124. The base 130 is provided with a connecting hole 131 corresponding to the positions of the first feeding part 114 and the second feeding part 124.

[0057] In this embodiment, the first feeding part 114 can be provided at the bottom of the first radiating body 111 and the second radiating body 112, and the second feeding part 124 can be provided at the bottom of the third radiating body 121 and the fourth radiating body 122. The coaxial line can be connected with the first feeding part 114 and the second feeding part 124 through the connecting hole 131 and transmit signals.

[0058] In an embodiment, the projections of the first vibrator 110 and the second vibrator 120 on the base 130 are a first projection, and the connection hole 131 is offset from the center of the first projection.

[0059] In this embodiment, in order to facilitate the coaxial cable to be connected with the first vibrator 110 and the second vibrator 120 through the connection hole 131, the connection hole 131 can be offset from the center of the first vibrator 110 and the second vibrator 120. For example, as shown in FIG. 5, the first feeding portion 114 can be arranged at the bottom of the first radiator 111, the second feeding portion 124 can be arranged at the bottom of the third radiator 121, and when the first radiator 111 and the third radiator 121 are arranged adjacent to each other, the connection hole 131 can be offset and arranged to the upper left of the positions of the first radiator 111 and the third radiator 121, so that the coaxial cable and the connector have enough space to be installed and connected.

[0060] In an embodiment, the antenna assembly 100 further comprises a first balun 115 and a second balun 125. The first end of the first balun 115 is electrically connected with the first feeding portion 114, and the second end of the first balun 115 is electrically connected with the first radiator 111 and the second radiator 112 respectively. The first end of the second balun 125 is electrically connected with the second feeding portion 124, and the second end of the second balun 125 is electrically connected with the third radiator 121 and the fourth radiator 122 respectively.

[0061] In this embodiment, the first feeding portion 114 can be arranged at the bottom of the first radiator 111, and the first feeding portion 114 is connected with the second radiator 112 through the first balun 115. The first balun 115 can be connected with the first radiator 111 and the second radiator 112 through the through holes respectively. The second feeding portion 124 can be arranged at the bottom of the third radiator 121, and the second feeding portion 124 is connected with the fourth radiator 122 through the second balun 125. The second balun 125 can be connected with the third radiator 121 and the fourth radiator 122 through the through holes respectively.

[0062] Referring to FIG. 6, in an embodiment, the antenna assembly 100 further comprises a housing 140. The housing 140 is used to form an accommodation cavity together with the base 130, and the first vibrator 110 and the second vibrator 120 are arranged in the accommodation cavity.

[0063] In this embodiment, the housing 140 cooperates with the base 130 to protect the objects in the accommodation cavity, and also facilitates the antenna assembly 100 to be installed at different positions according to actual application.

[0064] In an embodiment, the antenna assembly 100 further comprises a mounting rod 150. The mounting rod 150 can be fixed with the connecting hole 131. A coaxial cable is arranged inside the mounting rod 150, one end of which is connected with the first and second dipoles 110 and 120, and the other end of which is connected with a test system. In this way, the antenna assembly 100 is convenient to install and test. The mounting rod 150 can be filled with foaming glue, which is used to fix the coaxial cable, so as to prevent the coaxial cable from rotating to affect the connection with the antenna dipoles, and further improve the stability of the antenna assembly 100.

[0065] The application further provides a test system, which comprises the antenna assembly 100 as described above.

[0066] The detailed structure of the antenna assembly 100 can refer to the above embodiments, which will not be described here again. It can be understood that, since the above antenna assembly 100 is used in the test system of the application, the embodiments of the test system of the application include all the technical solutions of all the embodiments of the above antenna assembly 100, and the technical effects achieved are also completely the same, which will not be described here again.

[0067] In the above, the specific embodiments of the application are described with reference to the accompanying drawings. However, those skilled in the art can understand that various changes and replacements can be made to the specific embodiments of the application without departing from the spirit and scope of the application. These changes and replacements are all within the scope defined by the application.

Claims

1. An antenna assembly, characterized by The antenna assembly comprises a first dipole and a second dipole, the first dipole is in a plane perpendicular to the plane of the second dipole, and a vertical line is formed at the overlapping position; The first dipole comprises a first radiator and a second radiator; the first radiator and the second radiator are arranged at intervals; the first radiator comprises a first radiation part and a second radiation part; one end of the first radiation part is bent away from the vertical line to form the second radiation part; the structure of the second radiator is the same as that of the first radiator, and the second radiator is symmetrically arranged with the first radiator with the vertical line as the axis; The second dipole comprises a third radiator and a fourth radiator; the third radiator and the fourth radiator are arranged at intervals; the third radiator comprises a third radiation part and a fourth radiation part; one end of the third radiation part is bent away from the vertical line to form the fourth radiation part; the structure of the fourth radiator is the same as that of the third radiator, and the fourth radiator is symmetrically arranged with the third radiator with the vertical line as the axis.

2. The antenna assembly of claim 1, wherein, The second radiation part is provided with a fifth radiation part intersecting and connecting with one end of the second radiation part away from the first radiation part, and the fourth radiation part is provided with a sixth radiation part intersecting and connecting with one end of the fourth radiation part away from the third radiation part.

3. The antenna assembly of claim 2, wherein, The first radiation part and the second radiation part are arranged at an angle of 90°, and the second radiation part and the fifth radiation part are arranged at an angle of 90°; the structure of the third radiator is the same as that of the first radiator.

4. The antenna assembly of claim 1, wherein, The first radiation part and the second radiation part are integrally formed or detachably arranged.

5. The antenna assembly of claim 4, wherein, When the first radiation part and the second radiation part are detachably arranged, a first connecting piece is arranged between the first radiation part and the second radiation part.

6. The antenna assembly of claim 2, wherein, The first radiation part, the second radiation part and the fifth radiation part are integrally formed or detachably arranged.

7. The antenna assembly of claim 6, wherein, When the first radiation part, the second radiation part and the fifth radiation part are detachably arranged, a first connecting piece is arranged between the first radiation part and the second radiation part, and / or a second connecting piece is arranged between the second radiation part and the fifth radiation part.

8. The antenna assembly of claim 1, wherein, The antenna assembly further comprises a base, and the first dipole and the second dipole are fixed on the base; A first feeding part is arranged on the part of the first dipole close to the base, and a second feeding part is arranged on the part of the second dipole close to the base; A connecting hole is arranged on the base, and the connecting hole is arranged corresponding to the positions of the first feeding part and the second feeding part.

9. The antenna assembly of claim 8, wherein, The projection of the first dipole and the second dipole on the base is a first projection, and the connecting hole is arranged offset from the center of the first projection.

10. The antenna assembly of claim 8, wherein, The antenna assembly further comprises a first balun balancer and a second balun balancer; The first end of the first balun balancer is electrically connected with the first feeding part, and the second end of the first balun balancer is electrically connected with the first radiator and the second radiator respectively; The first end of the second balun balancer is electrically connected with the second feeding part, and the second end of the second balun balancer is electrically connected with the third radiator and the fourth radiator respectively.

11. The antenna assembly of claim 1, wherein, The antenna assembly further comprises a cross limiting piece; The cross limiting part is arranged at the upper end of the first vibrator and the second vibrator, and is used for clamping with the first vibrator and the second vibrator.

12. A test system, characterized by An antenna assembly comprising the antenna assembly of any one of claims 1 to 11.

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