VO2based Ultra-Reconfigurable Ka-Band Reflectarrays for Next-Generation Communication and Radar Systems
Conference
Matos, R, Kaddour, AS, Georgakopoulos, SV et al. (2021). VO2based Ultra-Reconfigurable Ka-Band Reflectarrays for Next-Generation Communication and Radar Systems
. 553-554. 10.1109/APS/URSI47566.2021.9704404
Matos, R, Kaddour, AS, Georgakopoulos, SV et al. (2021). VO2based Ultra-Reconfigurable Ka-Band Reflectarrays for Next-Generation Communication and Radar Systems
. 553-554. 10.1109/APS/URSI47566.2021.9704404
This paper presents a novel VO2-based ultra-reconfigurable reflectarray antenna for next generation communication and radar applications. Use of VO2, a phase change material, allows for ultra-reconfigurability by modifying the shape and size of the conducting reflective patches through an integrated heating matrix. The designed square patch unit-cell demonstrates a reflection phase shift in the order of 310°. Full-wave array analysis of a 20 × 20 element reflectarray is performed. Simulations show a directivity between 22-26 dBi with good beam scanning performance within ±50° elevation angle at 32GHz. This data is also in good agreement with the theoretical calculations. The proposed VO2-based reflectarray unit-cells can be dynamically reconfigured electronically which enables the reflectarray to dynamically change its frequency of operation and steer its beam. The main advantage of this antenna is the versatility and quantity of reconfigurable states it can achieve in real-time.
