A Polarization Reconfigurable Equilateral Triangular Microstrip Antenna (ETMA) for 5G-NR Communication

A novel polarization reconfigurable inset feed based Equilateral Triangular Microstrip Antenna (ETMA) design is presented for 5G mobile communication. In this design, the ETMA achieves both circular and linear polarization radiation by modifying the triangular patch through the truncation of its corners using a single PIN diode. During ON configuration, the proposed ETMA design with the single PIN diode exhibits linear polarization at the resonant frequency of 1.85 GHz, providing a gain of 0.4 dB. In the OFF configuration, it offers circular polarization with a gain of 0.21 dB. This versatile antenna design holds promise for applications in 5G NR (n-98) based mobile communication.