Multi-band circular polarization antenna resonance

The invention which is provided as to the antenna 3 resonates at midrange industrially available ISM band (2.44GHZ, 5.88GHZ, 7.32GHZ), a microstrip antenna consisting of a laminated type, and a metal plate on the high-efficiency multi-band circular polarization patch antenna the upper dielectric and the lower dielectric; The upper dielectric, the first metal plate is disposed in the center of the circular plate type; Lower dielectric is disposed in the center of the bar-shaped metal plate having a U-shaped bend on the top surface, and a third metal plate on the lower surface of the second metal plate and a lower layer dielectric that act as power supply lines to the ground role in semi-circular form; It said first inner circumferential shape of the first and second slots and the third and fourth slots of the first memory-shape formed along the plate edge is arranged on the metal plate; The first face of the third and the third metal plate and the fifth slot of the semicircular shape is disposed in the interior of the metal plate forms a semicircular shape made up of the sixth slot forming extension portions so that they are perpendicular on the tangent to the end of the semicircle of the circular polarization It is to implement the antenna