Abstract:

A study of a circular polarization microstrip array antenna is made.The emphasis is laid on the method for realization of a high-gain circular polarization array antenna by means of double-fed square elements.Simulation is carried out using the Ansoft HFSS software,and the simulated result shows that over the range of operating frequency,the antenna gain is higher than 13 dB,VSWR is less than 1.3,and both of the E-plane beamwidth and H-plane beamwidth are more than 33°.

Key words: circular;array;gain;VSWR;beamwidth