A low-sectional cavity backed broadband dielectric four radiating antenna element

The present invention belongs to the microwave antenna art, it relates to improvements in the back chamber broadband dielectric four antenna radiating elements. It comprises a radiating plate medium (1), a microstrip feed the dielectric plate (2) and tetrakis aliquot power splitter, characterized in that: in place of the metal back with a dielectric cavity back chamber. Thereby reducing the volume and weight, the feeder loss is reduced to improve the overall integration, reducing the cost.