A Circularly-Polarized-Reconfigurable Dense Dielectric Patch Antenna with Liquid Dielectric

In this paper, we present a circularly-polarized-reconfigurable dense dielectric (DD) patch antenna. Reconfigurability is adjusted by the liquid dielectric which called the ethyl acetate. When the uniformity of substrate of the DD patch antenna is destroyed by the ethyl acetate, then the proposed DD patch antenna would radiate circularly polarization (CP). In this way, by injecting ethyl acetate into each channel in the substrate, the left-hand polarization (LHCP) and right-hand polarization (RHCP) of the DD patch antenna can be switched.