| Autor: |
Trovarello, Simone, Di Florio Di Renzo, Alessandra, Aldrigo, Martino, Masotti, Diego, Dragoman, Mircea, Costanzo, Alessandra |
| Rok vydání: |
2022 |
| DOI: |
10.5281/zenodo.6705265 |
| Popis: |
This work presents the nonlinear model of voltage-controlled Interdigitated Capacitors (IDCs) based on ferroelectric nanomaterials to realize tunable radiofrequency (RF) circuits. In particular, the voltage-dependent characteristic of the Hafnium-Zirconium Oxide (HfZrO), of nano-meter thickness, is used to implement IDCs on high-resistivity silicon substrates. These devices promise to be crucial components in various applications that need real-time reconfigurability, such as reconfigurable intelligent surfaces (RIS), emerging systems of growing interest in the 5G technology and beyond. The nonlinear model is general-purpose and is derived from measurements carried out at different frequency and biasing conditions. The model is suitable for both low-power and high-power excitations. Preliminary Harmonic Balance analyses of the device have shown high convergence capability up to 40 dBm of input power. For demonstrative purposes, the device is used for beam-steering a two-antenna array system under several power conditions: the power-dependent performance shows that at 0-dBm a 47° phase shift within a ±1 V range are obtained, while the corresponding beam steering of the main lobe is ±11°. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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