Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications | Zendy

Francesca Venneri | Zendy; Sandra Costanzo | Zendy; G. Di Massa | Zendy

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Tunable Reflectarray Cell for Wide Angle Beam-Steering Radar Applications

Author(s) -

Francesca Venneri,

Sandra Costanzo,

G. Di Massa

Publication year - 2013

Publication title -

journal of electrical and computer engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 25

eISSN - 2090-0155

pISSN - 2090-0147

DOI - 10.1155/2013/325746

Subject(s) - varicap , beam steering , antenna (radio) , phase shift module , capacitance , radar , phase (matter) , beam (structure) , materials science , range (aeronautics) , radar cross section , optics , optoelectronics , computer science , physics , telecommunications , insertion loss , electrode , quantum mechanics , composite material

An electronically tunable reflectarray element is proposed in this work to design beam-steering antennas useful for radar applications. A reduced size reflectarray unit cell is properly synthesized in order to extend the antenna beam scanning capabilities within a wider angular region. The radiating structure is accurately optimized to provide a full phase tuning range by adopting a single varactor load as phase shifter element. A 0.46λ-reflectarray cell is designed at the frequency of 11.5 GHz, obtaining a phase agility of about 330°. The cell is successfully adopted for the design of a 21 × 21 reconfigurable reflectarray. The antenna is numerically tested for different configurations of the varactors capacitance values, and good beam-steering performances are demonstrated within a wide angular range

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