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Design and Validation of a Reconfigurable Single Varactor-Tuned Reflectarray

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3 Author(s)
Francesca Venneri ; Dipartimento di Elettronica, Informatica e Sistemistica, Università della Calabria, Rende (CS), Italy ; Sandra Costanzo ; Giuseppe Di Massa

An aperture-coupled reflectarray element giving a full phase tuning range with a single varactor diode is proposed in this paper for pattern reconfigurability applications. The full phase agility is achieved by a proper optimization of the phase tuning line, thus providing an alternate inductive/capacitive effect able to avoid the use of two varactor diodes, usually adopted in similar existing configurations. The proposed active element structure is adopted to design a demonstrative reflectarray prototype of 3 × 15 radiators. Furthermore, an own synthesis procedure is applied to obtain the proper biasing voltages giving the prescribed H-plane field. Test examples of beam-scanning, multibeam, and shaped-beam patterns are discussed to demonstrate the effectiveness of the approach.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:61 ,  Issue: 2 )