3D Printing-based Liquid Metal Patch Antennas with Wide-Band Frequency and Multi-Polarization Reconfigurations

In this paper, we present two reconfigurable patch antenna designs utilizing liquid metal tuning slots: a wide-band frequency reconfigurable patch antenna with frequency tuning bandwidth of 70% and instantaneous bandwidth of 2%; and a multi-polarization reconfigurable patch antenna with right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), and linear polarization (LP) with arbitrary orientation in x-y plane. The design and prototype strategy developed in this paper can be applied to other potential topologies with various reconfigurable functionalities.