A small dual polarized antenna

Abstract

The invention discloses a small dual-polarized antenna. The antenna comprises an antenna main body, one end of the antenna main body is fixed on the antenna base; the other end, opposite to the antenna base, of the antenna main body is provided with an open cavity body from inside to outside; a waveguide is arranged in the cavity body; the upper end side of the cavity body is provided with a square conical horn mouth; four multi-stage stepped square ridge strips are upwards arranged at the bottom end of the cavity body; the four multi-stage stepped ridge strips are the same in structure, are uniformly distributed at an angle of 90 degrees by taking the center of the bottom end of the cavity body as a central axis, and are arranged in a pairwise opposite mirroring manner; the four multi-stage stepped ridge strips extend upwards step by step from the bottom end side of the cavity body from inside to outside according to the height of the boss and are connected with the four edges of thebottom opening of the square conical horn mouth respectively, and the square conical horn mouth and the four multi-stage stepped square ridge strips are of an integrated structure machined and formedon a blank of the antenna body. The integrated design is adopted, welding assembly and debugging are not needed, the consistency between sleeves can be guaranteed, and the antenna is suitable for massproduction, free of debugging and extremely low in assembly difficulty.

Description

technical field [0001] The invention relates to a small dual-polarized antenna, which is a small dual-polarized antenna with a frequency coverage range of 24GHz-43.5GHz frequency band millimeter wave, which is applied to an anechoic test system for 5G millimeter wave equipment. Background technique [0002] In the anechoic test system of 5G millimeter-wave equipment, it is necessary to use a standard gain dual-polarized antenna with a frequency coverage of 24GHz-43.5GHz; the existing dual-polarized antennas in this frequency band mainly include two types: the first one is a horn opening with double ridges The line forms a dual-polarized antenna; the second is a horn opening plus an orthogonal mode coupler to form a dual-polarized antenna. Among them, the four-ridge structure of the horn antenna is in the form of a gradual curve, which requires high processing accuracy. It must be processed separately and then welded through an aluminum brazing furnace to form a whole. Finall...

AI Technical Summary

Problems solved by technology

Among them, the four-ridge structure of the horn antenna is in the form of a gradual curve, which requires high processing accuracy. It must be processed separately and then welded through an aluminum brazing furnace to form a whole. Finally, a debugging block is added for debugging. The amount of debugging is large, and it is difficult to ensure Suite Consistency

If you want to use it as a standard gain dual-polarized antenna, you need to perform calibration tests in a standard microwave anechoic chamber, which requires a large amount of testing and high testing costs.

However, the form of horn opening plus orthogonal coupler is difficult to miniaturize, and there are many parts to be processed, and many parts are required for assembly and debugging. Although the requirements for the processing accuracy of the parts are reduced, it can meet a certain set of uniformity, but the volume is too large to meet the requirements of small size. Darkroom test scene

Images