The design of a novel integrated on silicon, 2-D reconfigurable 2x2 antenna array operating at 2.45 GHz, adopting Interdigitated Capacitors (IDCs) based on nanoscale ferroelectric hafnium zirconium oxide (HfZrO), is presented. First, a general-purpose circuit-equivalent nonlinear model of the IDCs is derived from measurements and its power-handling capabilities are predicted by Harmonic Balance (HB) simulations. The model is then used in the array CPW-feeding network for 2-D steering of the array. Nonlinear/Electromagnetic co-simulation is carried out to predict the far-field steering performance under large-signal RF excitations, in a 50-dB range, starting from -30dBm. A maximum steering range, over the azimuthal and elevation directions of ±18° in the lower power range is obtained, which reduces to ±8° at 20 dBm and over. The proposed tunable devices, exploiting nanoscale ferroelectric materials, promise to be interesting candidate to replace switch-based phase shifters, requiring lower DC bias voltages.
Trovarello, S., Di Florio Di Renzo, A., Aldrigo, M., Masotti, D., Dragoman, M., Costanzo, A. (2023). Nonlinear Modelling of Steerable Antenna Array by Ferroelectric Capacitors Based on Nanoscale Layers of HfZrO [10.23919/EuMC58039.2023.10290218].
Nonlinear Modelling of Steerable Antenna Array by Ferroelectric Capacitors Based on Nanoscale Layers of HfZrO
Trovarello, S.;Di Florio Di Renzo, A.;Masotti, D.;Costanzo, A.
2023
Abstract
The design of a novel integrated on silicon, 2-D reconfigurable 2x2 antenna array operating at 2.45 GHz, adopting Interdigitated Capacitors (IDCs) based on nanoscale ferroelectric hafnium zirconium oxide (HfZrO), is presented. First, a general-purpose circuit-equivalent nonlinear model of the IDCs is derived from measurements and its power-handling capabilities are predicted by Harmonic Balance (HB) simulations. The model is then used in the array CPW-feeding network for 2-D steering of the array. Nonlinear/Electromagnetic co-simulation is carried out to predict the far-field steering performance under large-signal RF excitations, in a 50-dB range, starting from -30dBm. A maximum steering range, over the azimuthal and elevation directions of ±18° in the lower power range is obtained, which reduces to ±8° at 20 dBm and over. The proposed tunable devices, exploiting nanoscale ferroelectric materials, promise to be interesting candidate to replace switch-based phase shifters, requiring lower DC bias voltages.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
