A method for transmitting and receiving the signals with the base station antenna and base station antenna

Abstract

The provided BS antenna for receiving and transmitting signal comprises: an orthogonal bi-polarized array including two antenna arrays, and a single-polarized array with same direction as one former array as one path of receiving and emitting antennas respectively. Wherein, the antenna array in bi-polarized array that is orthogonal with the single-polarized one can be used as one path of receiving antenna. This invention increases antenna port isolation greatly, can replace the duplexer with three independent filters, and has well performance.

Description

technical field [0001] The invention relates to the technical field of mobile communication antennas, in particular to a method for transmitting and receiving signals by using a base station antenna and the base station antenna. Background technique [0002] With the rapid development of mobile communication technology and the rapid increase of mobile communication traffic; the coverage of mobile communication networks is constantly expanding and improving, and the base station antenna, which is one of the key components of mobile communication systems, changes accordingly with the construction of mobile communication networks. become more and more important. [0003] In order to improve the performance of the system, the existing base station antenna generally adopts a dual-polarized antenna. The dual-polarized antenna combines two antennas whose polarization directions are orthogonal to each other, and works in the duplex mode of transmission and reception at the same tim...

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Problems solved by technology

[0007] However, the above two base station antennas have the following disadvantages: on the one hand, since the transceiver channels share one antenna port, the antenna cannot provide isolation between the transceiver channels. In order to meet the requirements of the system for the isolation of the transceiver channels, the The duplexer behind the antenna port puts forward higher isolation requirements, and this requirement will lead to a larger size of the duplexer, which increases the difficulty of miniaturizing the radio frequency subsystem. Among them, the duplexer is used to make the transceiver channel When sharing, two frequency bands with a certain interval can achieve greater isolation; on the other hand, since the transceiver channel shares an antenna array, the antenna needs to meet good performance in both the receiving frequency band and the transmitting frequency band, that is, a wider Antenna bandwidth

Therefore, there is no base station antenna in the prior art that can have high antenna performance

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