CN-224232932-U - Vehicle-mounted biconical antenna

Abstract

The utility model discloses a vehicle-mounted double-cone antenna, relates to the technical field of double-cone antennas, and particularly relates to a vehicle-mounted double-cone antenna. The antenna comprises an upper cone, a lower cone, a coaxial cable, an upper cone pressing plate and a lower cone pressing plate, wherein the upper cone and the lower cone are connected through cone connecting pieces, the coaxial cable is arranged in the lower cone and penetrates through the upper cone and the lower cone, and the coaxial cable comprises an inner conductor, an outer conductor and an insulating medium therebetween. The coaxial support rod is characterized in that the inner conductor is connected with the upper cone in a conductive manner through the inner conductor conductive flange, the outer conductor is connected with the lower cone in a conductive manner through the outer conductor conductive flange, the upper cone pressing plate and the lower cone pressing plate are respectively used for fixing the inner conductor conductive flange and the outer conductor conductive flange on the upper cone and the lower cone, and the coaxial support rod is fed downwards from the lower cone through the coaxial cable, so that the eccentric moment and wind load additional couple problems caused by a traditional support rod suspension structure are avoided, and the structural stability and the mechanical property of the antenna are remarkably improved.

Inventors

• CHEN JINGTAO
• ZHANG XINYAN
• GUO WEIYI
• SHEN XIAOQI

Assignees

• 河南爱科瑞特电子科技有限公司

Dates

Publication Date

20260512

Application Date

20250905

Claims (6)

1. 1. The vehicle-mounted double-cone antenna comprises an upper cone (9), a lower cone (10), a coaxial cable (1), an upper cone pressing plate (4) and a lower cone pressing plate (3), and is characterized in that the upper cone (9) and the lower cone (10) are connected through a cone connecting piece (11), the coaxial cable (1) is arranged in the lower cone (10) and penetrates through the upper cone (9) and the lower cone (10), the coaxial cable (1) comprises a cable inner conductor (5), a cable outer conductor (2) and an insulating medium between the cable inner conductor (5) and the cable outer conductor (2), the antenna further comprises an inner conductor conductive flange (6) and an outer conductor conductive flange (7), the inner conductor conductive flange (6) is in conductive connection with the cable inner conductor (5), a conductive surface for conductive bonding with the upper cone (9) is arranged on the inner conductor conductive flange (6), the outer conductor conductive flange (7) is in conductive connection with the cable outer conductor (2), the upper cone crimping plate (4) and the lower cone crimping plate (3) are respectively used for crimping and fixing the inner conductor conductive flange (6) and the outer conductor conductive flange (7) on the upper cone (9) and the lower cone (10).
2. 2. The vehicle-mounted biconical antenna according to claim 1, wherein the inner conductor conductive flange (6) is provided with a boss, and the boss and the cable inner conductor (5) are fixed in a crimping or welding mode.
3. 3. A vehicle-mounted biconical antenna according to claim 1, wherein the outer conductor conductive flange (7) is provided with a flange (14), and the flange (14) extends in the direction of the inner conductor conductive flange (6).
4. 4. A vehicle-mounted biconical antenna according to claim 1, further comprising an outer conductor conductive tab (8), said outer conductor conductive tab (8) being clamped to said outer conductor conductive flange (7) and soldered to said cable outer conductor (2).
5. 5. A vehicle-mounted biconical antenna according to claim 4, wherein the outer conductor conductive sheet (8) and the outer conductor conductive flange (7) are fixed only by pressing, without welding.
6. 6. A vehicle-mounted biconical antenna according to claim 1, wherein grooves (13) for accommodating an inner conductor conductive flange (6) and an outer conductor conductive flange (7) are respectively arranged on the upper cone pressing plate (4) and the lower cone pressing plate (3), and screws (12) of the inner conductor conductive flange (6) and the outer conductor conductive flange (7) respectively press an upper cone (9) and a lower cone (10) respectively.

Description

Vehicle-mounted biconical antenna Technical Field The utility model relates to the technical field of double-cone antennas, in particular to a vehicle-mounted double-cone antenna. Background The biconical antenna belongs to a typical broadband antenna, and is composed of two oppositely arranged conical or triangular conductors, and is fed through a coaxial cable generally, and has the advantages of wide impedance bandwidth, stable radiation characteristic, good omnidirectionality and the like, so that the biconical antenna is widely applied to the fields of communication, radars, electronic reactance, electromagnetic testing and the like. In the prior art, a double-cone antenna generally adopts an intermediate feed structure, namely an outer conductor of a coaxial cable is connected with a lower cone, and an inner conductor is connected with an upper cone, so that broadband matching and signal transmission are realized. In a stationary or laboratory environment, the structure is capable of satisfying most of the use requirements. However, in the vehicle-mounted application scenario, if the conventional medial axis feeding mode is still adopted, the antenna body is suspended from the vehicle-mounted lifting rod by a certain distance through a supporting rod with a coaxial cable, so as to avoid the influence of the lifting rod on the electrical performance of the antenna. This structure suffers from the following disadvantages: 1. the supporting rod is required to be downwards arranged with the coaxial cable after being suspended, so that the structural length and the installation difficulty are increased. 2. Because the center of gravity of the antenna deviates from the central axis of the lifting rod, the lifting rod needs to bear a large bending moment, and the rod body is easy to deform or fatigue damage. 3. The wind load has obvious influence, the windward area is increased when the antenna is suspended and installed, the rod body generates torque, the structural stability is reduced, and the supporting rod not only needs to bear the weight of the antenna, but also needs to resist the wind force, so that the strength is required to be improved, and the bearing pressure of the lifting rod is further increased. In summary, the existing vehicle-mounted biconical antenna has defects in stress structure, wind resistance, installation complexity and long-term stability, and is difficult to meet the comprehensive requirements of vehicle-mounted environment on light weight, stability and reliability. Disclosure of utility model The utility model aims to overcome the existing defects, and provides the vehicle-mounted double-cone antenna, the axis of the antenna is ensured to coincide with the lifting rod by feeding the coaxial cable from the lower cone of the antenna, the load of the lifting rod is improved, the stability is improved, and the problems in the background technology can be effectively solved. The technical scheme includes that the vehicle-mounted biconical antenna comprises an upper cone, a lower cone, a coaxial cable, an upper cone pressing plate and a lower cone pressing plate, wherein the upper cone and the lower cone are connected through cone connecting pieces, the coaxial cable is arranged in the lower cone and penetrates through the upper cone and the lower cone, the coaxial cable comprises an inner cable conductor, an outer cable conductor and an insulating medium between the inner cable conductor and the outer cable conductor, the antenna further comprises an inner conductor conducting flange and an outer conductor conducting flange, the inner conductor conducting flange is in conducting connection with the inner cable conductor, a conducting surface used for conducting and jointing with the upper cone is arranged on the inner conductor conducting flange, the outer conductor conducting flange is in conducting connection with the outer cable conductor, a conducting surface used for conducting and jointing with the lower cone is arranged on the outer conductor conducting flange, and the upper cone pressing plate and the lower cone pressing plate are respectively used for fixing the inner conductor conducting flange and the outer conductor conducting flange on the upper cone and the lower cone in a pressing mode. Further, a boss is arranged on the inner conductor conductive flange, and the boss and the cable inner conductor are fixed in a crimping or welding mode. Further, the outer conductor conductive flange is provided with a flange, the flange extends towards the inner conductor conductive flange, and the flange is used for extending the cable outer conductor so as to ensure smaller space between the cable outer conductor and the cable inner conductor of the coaxial cable and realize better antenna performance. Further, the cable further comprises an outer conductor conducting sheet, wherein the outer conductor conducting sheet is clamped with the outer conductor conducting flange and weld