A ten element sequentially fed sub-array for circular polarization links in C-band

This paper presents a pentagonal array composed of ten elements for operation at 5.8GHz. The proposed device operates in circular polarization exploiting the sequential rotation architecture applied to five pair of disc-based patch elements. A pentagonal sub-array is well-suited to be packed in icosahedral arrangement, which in turn is the ideal shape for smart antennas with wide angle spatial coverage. A single layer via-less prototype is simulated on a FR408 substrate. A realized gain up to 11.6 dBi with a polarization purity exceeding 30 dB at 5.8,GHz is observed.