Abstract:

A wideband and widebeam microstrip antenna for satellite communication system is presented.By feeding the stack dielectric with four orthogonal inverted-L-shaped pins,left and right hand circularly polarized operations are obtained.The proposed antenna is fabricated and obtain 20% relative bandwidth,3.2 dB axtial,and better than 120° 3 dB-beamwidth which is suitable for satellite system.

Key words: satellite communication;L-shape probe;double circular polarized