Multiple bands stacked microstrip patch antenna for satellite communications

Multiple bands stacked patch antenna with circular polarization for satellite communications is proposed. The antenna is composed of two stacked patches with total dimensions of 45 × 45 mm and 40 × 40 mm for the lower and upper patches, respectively, separated by FR_4 as a dielectric material. One patch is fed through Microstrip line and other is fed through two VIAs. The proposed antenna is designed using the method of moments simulator of ADS and the simulations results show good performance in satellite communications bands around 1.41 GHz, and 1.55 GHz with gain of 3.42 dBi. Circular polarization is achieved from 1.42 GHz to 1.46 GHz.