Nested type Koch fractal Beidou dual-frequency micro-strip antenna

The invention relates to a nested type Koch fractal Beidou dual-frequency micro-strip antenna which comprises a high dielectric constant dielectric substrate, a good conductor grounding reflection plate and an N type or sma national standard joint, a structural mode of copper axis feed is adopted, metal good conductors are coated on two faces of the high dielectric constant dielectric substrate, a nested type ring outer Koch fractal paster and a nested type ring inner Koch fractal paster are arranged on the upper surface of the high dielectric constant dielectric substrate, and a gap groove structure is arranged between the ring outer Koch fractal paster and the ring inner Koch fractal paster. A low-frequency stage feed hole is formed in the ring outer Koch fractal paster, a high-frequency stage feed hole is formed in the ring inner Koch fractal paster, and four gap grooves are formed in the good conductor grounding reflection plate. The nested type Koch fractal Beidou dual-frequency micro-strip antenna has the advantages of being novel in structure, small in size, good in radiation characteristic, small in effect of environment factor, low in cost, easy to integrate and the like, and can meet the requirement of a Beidou satellite communication system for an antenna.