Matnetic tripolarizaiton antenna for DSRC applications

Abstract

A magnetic tripolarization antenna is proposed for DSRC (Dedicated Short Range Communication) applications. A conventional patch antenna, which is usually used to generate the horizontal polarization, is modified to generate the perpendicular polarizations by including the ring slots. The opposite currents flowing the upper and under conductors generate loop current. For the horizontal polarization ZOR (Zeroth Order Resonance) loop antenna is included in the proposed structure. The uniform current of the ZOR loop antenna effectively generates the horizontal polarization. The simulated result shows that the proposed antenna has -10 dB impedance bandwidths from 5.85 to 5.94 GHz, which is appropriate for DSRC applications. The isolation between ports is higher than 25 dB over DSRC bandwidth. The proposed antenna has a size of 32 × 32 × 1.57 mm3.