Research On Multi-band Wide-band Low-Profile Antenna And Array For Base Station

The design and implementation of high-performance miniaturized base station antenna is the key and difficulty issue that LTE/5G cellular mobile communication system have faced and must be solved step by step at present and in the future for a long period of time.Based on this,this paper proposed a multi-band and dual-row solution exclusively for a base station antenna,which have achieved good electrical and radiation characteristics under the miniaturized and low-profile physical condition.This thesis mainly studies the issues of high-performance and miniaturization that dual-row multi-band base station antennas have faced and develops corresponding prototype.The main works are as follows:firstly put forward the independent technical scheme of radiator and feed for LF(0.69~0.96GHz)and HF(1.71~2.69GHz)units respectively.Secondly,based on the LF and HF independent solution,a high-performance coaxial base station antenna unit has been designed,which cover 2G/3G/4G mobile communication frequency bands under the size of 286×286×81mm~3.Moreover,based on the coaxial unit,a dual-row 5+5+3 array model have appraised under the miniaturized condition of 356mm in width and 89mm in height.We focus on basic electromagnetic and mechanical issues like topology structure and miniaturized layout of full array.And then,puts forward a simplified model which has been verified to be feasible.Based on this class 3+2 model,we finished circuit optimal design like transmission FNs layout and port matching.Finally,class 3+2 array prototype has been manufactured and measured.The measured results proved the feasibility of this antenna array scheme.