Abstract: The microchip patch antenna has been widely used in communications.However,the size has greatly limited its application when it works in low frequency less than 2 GHz.In this paper,HFSS is used to do some simulation research on microchip patch antenna loaded with shorting pin,which also has been compared with the unloaded.The results show that antenna loaded with shorting pin can not only decrease the size of the antennas,but also have better frequency characteristic and impedance characteristic.

Key words: microstrip antenna, short-pin, miniature