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.
Nonlinear Modelling of Steerable Antenna Array by Ferroelectric Capacitors Based on Nanoscale Layers of HfZrO / Trovarello, S.; Di Florio Di Renzo, A.; Aldrigo, M.; Masotti, D.; Dragoman, M.; Costanzo, A.. - ELETTRONICO. - (2023), pp. 10290218.524-10290218.527. (Intervento presentato al convegno 53rd European Microwave Conference (EuMC) tenutosi a Berlin nel 19-21 September, 2023) [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.
