Tri-Band, Polarization-Independent Reflectarray at Terahertz Frequencies: Design, Fabrication, and Measurement
Hasani, H.
; Tamagnone, M
; CapdeVila, S.
; Moldovan, C. F.
; Maoddi, P.
; Ionescu, A. M.
;
Peixeiro, C.
; Mosig , J.
; Skrivervik, A. K.
; Perruisseau-Carrier, J.
IEEE Transactions on Terahertz Science and Technology Vol. 6, Nº 2, pp. 268 - 277, March, 2016.
ISSN (print): 2156-342X
ISSN (online): 2156-3446
Scimago Journal Ranking: 1,14 (in 2016)
Digital Object Identifier: 10.1109/TTHZ.2016.2522301
Abstract
In this paper, two THz reflectarray surfaces have
been designed and fabricated in order to deflect a plane wave with any polarization and with a specific incident angle to three different specific directions each at distinct three frequencies of 0.7, 1.0 and 1.5 THz. The surface is composed of an array of 100 100 cells, each comprised of gold crosses and parasitic dipoles printed on thin grounded high resistivity silicon. Finite-element method (FEM) simulations are in line with the measurement results obtained using THz time-domain spectroscopy (THz TDS)
showing the intended deflections for the two fabricated samples
each with an arbitrary frequency-vs-deflection angle relationship.
In addition, the use of silicon as the substrate paves the way for
the integration of reconfigurable technologies which enhances the
reflectarray versatility.
