Array antenna based on dual-beam conversion

The invention discloses an array antenna based on dual-beam conversion. The array antenna comprises a 2*2 array antenna, a 4*4 array antenna and a switch selector, wherein the switch selector comprises two blocking capacitors, two PIN diodes and two series inductors, the switch selector has two output ends, one output end is connected with the 2*2 array antenna, and the other output end is connected with the 4*4 array antenna. According to the invention, communication reliability is realized; and when the antenna is used in an unstable environment (such as a high tower), the array antenna with a specific wave beam is selected through the control switch, so that the problems that a high-gain narrow wave beam is high in pointing requirement, and signals cannot be transmitted due to temporary external environment change and misalignment of transmitting and receiving are solved, and the communication reliability is realized. 本发明公开了一种基于双波束转换的阵列天线，包括2*2阵列天线、4*4阵列天线和开关选择器，所述开关选择器包括两个隔直电容、两个PIN二极管和两个串联电感，所述开关选择器有两个输出