High-power-capacity broadband microstrip patch antenna and power test method thereof

The invention provides a high-power-capacity broadband microstrip patch antenna and a power test method thereof, and aims to solve the technical problem that a conventional microstrip antenna is low in power capacity and is not suitable for a high-power microwave radiation system of a semiconductor device. The microstrip patch antenna comprises a bottom plate, a supporting structure, a coaxial connector and a radiation structure. The radiation structure comprises a capacitive patch, a dielectric plate, a coupled feed structure and a radiation patch; the microstrip line of the coupled feed structure is connected with the radiation patch; an inner conductor of the coaxial connector is welded with a bonding pad of the coupling feed structure; the capacitive patch is conducted with the coupling feed structure; four corners of the radiation patch are arc-shaped; the edge of the capacitive patch is provided with a solder mask, and the size of the capacitive patch is set to be 0.062 * lambda0-ply * (0.5-k); a gap is