A Dual-Band Polarization-Switchable Stacked Microstrip Antenna Loading Cross Slot and Diodes

This paper proposes a dual-band linear-polarization switchable antenna using a stacked structure. The proposed antenna consists of a square patch and cross-slot patch with diodes. The polarizations of the antenna can be switched by the switching voltage applied to the diodes mounted in the cross slot. As the proposed antenna uses only 4 diodes, the antenna configuration is compact compared with the previously reported antennas. The characteristics of the proposed antenna are analyzed and evaluated by simulation. It is confirmed that the proposed antenna operates in dual bands and achieves a linear-polarization switching.