An electronic device, comprising a dual polarized antenna, wherein the dual polarized antenna is arranged on a circuit board, the circuit board comprises a top layer, a bottom layer, and a middle layer, the middle layer is a ground layer, and the dual polarized antenna comprises:
- M array antenna units, arranged on the top layer of the circuit board, wherein M is an integer greater than or equal to 4;
- and each array antenna unit comprises four antenna units, and the four antenna units are located at four corners of a square;
- a first polarized feeding network, arranged on the bottom layer of the circuit board, wherein the first polarized feeding network comprises a first feeding port and M first feeding network subunits, and the first polarized feeding network is configured to divide a feeding signal of the first feeding port into M*4 equal sub-signals;
- each first feeding network subunit corresponds to one array antenna unit, the each first feeding network subunit is electrically connected to a corresponding array antenna unit through a first group of metal holes;
- and the each first feeding network subunit excites the corresponding array antenna unit through the first group of metal holes;
- and the first polarized feeding network further comprises:
- a fourth T-junction comprising an input end, a first output end and a second output end, wherein the input end of the fourth T-junction is electrically connected to the first feeding port;
- a fifth T-junction comprising an input end, a first output end and a second output end, wherein the input end of the fifth T-junction is electrically connected to the first output end of the fourth T-junction through a third microstrip line, the first output end of the fifth T-junction is electrically connected to one of the M first feeding network subunits through a fifth microstrip line, and the second output end of the fifth T-junction is electrically connected to another one of the M first feeding network subunits through a sixth microstrip line;
- and a length of the sixth microstrip line is one wavelength longer than a length of the fifth microstrip line;
- a second polarized feeding network, arranged on the bottom layer of the circuit board, wherein the second polarized feeding network comprises a second feeding port and M second feeding network subunits, and the second polarized feeding network is configured to divide a feeding signal of the second feeding port into M*4 equal sub-signals;
- each second feeding network subunit corresponds to one array antenna unit, the each second feeding network subunit is electrically connected to the corresponding array antenna unit through a second group of metal holes;
- and the each second feeding network subunit excites the corresponding array antenna unit through the second group of metal holes;
- wherein each of the M first feeding network subunit comprises:
- a first T-junction, comprising an input end, a first output end and a second output end, wherein the first T-junction is configured to divide a signal of the input end of the first T-junction into two equal sub-signals;
- a second T-junction, comprising an input end, wherein the input end of the second T-junction is electrically connected to the first output end of the first T-junction through a first microstrip line, thereby dividing an output signal of the first output end of the first T-junction into two equal sub-signals;
- a third T-junction, comprising an input end, wherein the input end of the third T-junction is electrically connected to the second output end of the first T-junction through a second microstrip line, and the third T-junction is configured to divide an output signal of the second output end of the first T-junction into two equal sub-signals;
- the second T-junction is parallel to the third T-junction.