Broadband Dual Polarized Antenna Radiating Unit and Its Antenna

Abstract

The invention provides broadband dual polarized antenna radiating units which are suitable for the field of mobile communication base station antennas. Every broadband dual polarized antenna radiating unit comprises a radiator which is integrally formed, two pairs of balancers and a chassis, wherein the radiator comprises two pairs of symmetrical arrays, every symmetrical array is connected with the chassis through the corresponding balancer, the top of every balancer is provided with a feed connection convex platform, every array comprises two dipole sub-arms which are formed by a plurality of sections of structures and are symmetrical relative to the corresponding balancer, and every dipole sub-arm comprises a loading section which is located on a tail section of the dipole sub-arm and extends along the upward direction and the downward direction which are perpendicular to the plane of the chassis. The broadband dual polarized antenna radiating units are good in cross polarization characteristic, convergent in radiation pattern, strong in mechanical performance, reliable in structure and easy to machine and produce. Meanwhile the invention also discloses an antenna utilizing the broadband dual polarized antenna radiating units. According to the antenna, the cross polarization characteristics are good, the radiation convergence is good, the consistency of the electric performance is good, and the mutual coupling effect between the radiating units and the radiating units and high frequency oscillators is small in antenna arraying.

Description

technical field [0001] The invention belongs to the field of mobile communication base station antennas, in particular to a broadband dual-polarized antenna radiation unit and a broadband antenna using the radiation unit. Background technique [0002] With the development of mobile communication technology and the increasing complexity of the actual application environment, mobile communication technology has higher and higher requirements for base station antennas. Therefore, antennas with high intermodulation, high radiation performance, and high reliability have become more and more popular among mobile communication operators. As a mobile phone mobile communication terminal, the base station antenna is generally combined into an array form of radiation elements of the same form to obtain high gain. The gain, cross-polarization ratio, and front-to-back ratio of the radiating unit also directly affect the gain, cross-polarization ratio, and front-to-back ratio of the enti...

AI Technical Summary

Problems solved by technology

[0004] 1. The thick section at the end of the CN201134512Y array wall causes the weight of the end of the symmetrical vibrator arm to be too heavy. During transportation and application, the vibration will affect the reliability of the connection between the dipole arm and the balancer, and there is even a risk of breaking

Similarly, all downward-bent loading sections have not been weight-reduced, increasing reliability risks

[0005] 2. The CN201134512Y balancer connects the symmetrical element and the ring base in a straight line. When the high-frequency vibrator is built in, the balancer arm is too close to the high-frequency vibrator, causing a large mutual coupling effect

[0006] 3. Although CN102013560 mentioned some of the deficiencies of CN201134512Y and made corresponding improvements, there are still deficiencies. For example, the front wall adopts a structure that uses the loading section to bend inward, although it reduces the coupling degree to high frequencies , but its inward bending will form a certain degree of shielding for the radiation of the internal high-frequency oscillator pattern, which will affect the effect of the radiation pattern

[0007] 4. CN102013560 uses a metal folded line sheet as the radiator, which intends to improve the machinability and reliability, but in actual use, it requires a large number of external plastic parts to achieve stability, which affects the consistency of performance

[0008] 5. The form of the metal folded line of the unit arm of CN102013560 leads to an increase in the electroplating surface area, which will undoubtedly increase the processing cost of the array

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