Broad-band wide-beam circularly polarized antenna

The broad frequency band beam circular polarized antenna of the utility comprises metal reflecting bottom board and circuit board mounted thereon; the circuit board is provided with an etched microstrip one-to-two power divider of 90 degree phase difference; the circuit board is provided with a first microstrip coupling dipole and the second microstrip coupling dipole; the microstrip coupling dipoles are orthogonal and mounted on the circuit board; the excitation line is zigzag distributed; dipole arm is welding to grounding welding disc; the excitation line is connected with two output ports of power divider; input prot of the power divider is connected with the radio frequency connector. The broad frequency band beam circular polarized antenna of the utility has merits of small volume, high efficiency, simple structure, convenient assemblage and promotion for communication system performance, and that axis is 20% larger than bandwidth, half-power beam width is more than 85 degree, gain is more than 6dBi; the broad frequency band beam circular polarized antenna can be applied in phased array antenna which effectively increase pitching scanning angle.