Multi-frequency combined antenna

Abstract

The invention provides a multi-frequency combined antenna. The antenna comprises: a reflecting plate and an antenna array arranged on the front surface of the reflecting plate, a first feed system anda second feed system which are arranged on the back face of the reflecting plate, and at least one combiner which is connected with the first feed system and the second feed system. The antenna arraycomprises a plurality of common radiation units, signals of the first feed system and the second feed system are combined and connected to each common radiation unit, and the antenna array further comprises a first symmetrical array and a second symmetrical array which are symmetrically arranged and electrically connected with the first feed system and the second feed system respectively. According to the multi-frequency combiner antenna provided by the invention, the first symmetric array and the second symmetric array are arranged, so that the number of combiners can be effectively reduced,the weight of the antenna is reduced, and the cost is reduced. And secondly, since the radiation units in the symmetric array and the common array are arranged in a staggered manner, spatial multiplexing of the reflecting plate can be realized, the horizontal beam width of the antenna is narrowed, the width of the reflecting plate is reduced, and miniaturization is realized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a multi-frequency combining antenna. Background technique [0002] With the rapid development of mobile communication technology and the increasing number of communication network standards, in order to adapt to the working frequency bands of different network standards, the construction cost of network base stations will increase greatly. Moreover, with the increasing shortage of site resources, many sites will face the situation that they cannot add new base station antennas. Therefore, with the advent of the era of multi-network coexistence, base station antennas are required to accelerate the evolution to multi-frequency and miniaturization, and support multi-frequency multi-system work. Combined antenna has become the main development direction of base station antenna. [0003] See figure 1 , the main method for the existing multi-frequency combining antenna t...

AI Technical Summary

Problems solved by technology

Specifically, in order to ensure that the system isolation between the first feed system and the second feed system meets the requirements and avoid interference between feed systems, it is necessary to set up a combiner between each radiating unit and the two feed systems However, due to the need to set too many combiners in this structure, the cost of the antenna is greatly increased, the weight of the antenna is increased, and the miniaturization of the antenna is difficult

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